com.mxgraph.view
Class mxGraph

java.lang.Object
  com.mxgraph.util.mxEventSource
      com.mxgraph.view.mxGraph

public class mxGraph
extends mxEventSource

Implements a graph object that allows to create diagrams from a graph model and stylesheet.

Images

To create an image from a graph, use the following code for a given XML document (doc) and File (file): Image img = mxCellRenderer.createBufferedImage( graph, null, 1, Color.WHITE, false, null); ImageIO.write(img, "png", file); If the XML is given as a string rather than a document, the document can be obtained using mxUtils.parse. This class fires the following events: mxEvent.ROOT fires if the root in the model has changed. This event has no properties. mxEvent.ALIGN_CELLS fires between begin- and endUpdate in alignCells. The cells and align properties contain the respective arguments that were passed to alignCells. mxEvent.FLIP_EDGE fires between begin- and endUpdate in flipEdge. The edge property contains the edge passed to flipEdge. mxEvent.ORDER_CELLS fires between begin- and endUpdate in orderCells. The cells and back properties contain the respective arguments that were passed to orderCells. mxEvent.CELLS_ORDERED fires between begin- and endUpdate in cellsOrdered. The cells and back arguments contain the respective arguments that were passed to cellsOrdered. mxEvent.GROUP_CELLS fires between begin- and endUpdate in groupCells. The group, cells and border arguments contain the respective arguments that were passed to groupCells. mxEvent.UNGROUP_CELLS fires between begin- and endUpdate in ungroupCells. The cells property contains the array of cells that was passed to ungroupCells. mxEvent.REMOVE_CELLS_FROM_PARENT fires between begin- and endUpdate in removeCellsFromParent. The cells property contains the array of cells that was passed to removeCellsFromParent. mxEvent.ADD_CELLS fires between begin- and endUpdate in addCells. The cells, parent, index, source and target properties contain the respective arguments that were passed to addCells. mxEvent.CELLS_ADDED fires between begin- and endUpdate in cellsAdded. The cells, parent, index, source, target and absolute properties contain the respective arguments that were passed to cellsAdded. mxEvent.REMOVE_CELLS fires between begin- and endUpdate in removeCells. The cells and includeEdges arguments contain the respective arguments that were passed to removeCells. mxEvent.CELLS_REMOVED fires between begin- and endUpdate in cellsRemoved. The cells argument contains the array of cells that was removed. mxEvent.SPLIT_EDGE fires between begin- and endUpdate in splitEdge. The edge property contains the edge to be splitted, the cells, newEdge, dx and dy properties contain the respective arguments that were passed to splitEdge. mxEvent.TOGGLE_CELLS fires between begin- and endUpdate in toggleCells. The show, cells and includeEdges properties contain the respective arguments that were passed to toggleCells. mxEvent.FOLD_CELLS fires between begin- and endUpdate in foldCells. The collapse, cells and recurse properties contain the respective arguments that were passed to foldCells. mxEvent.CELLS_FOLDED fires between begin- and endUpdate in cellsFolded. The collapse, cells and recurse properties contain the respective arguments that were passed to cellsFolded. mxEvent.UPDATE_CELL_SIZE fires between begin- and endUpdate in updateCellSize. The cell and ignoreChildren properties contain the respective arguments that were passed to updateCellSize. mxEvent.RESIZE_CELLS fires between begin- and endUpdate in resizeCells. The cells and bounds properties contain the respective arguments that were passed to resizeCells. mxEvent.CELLS_RESIZED fires between begin- and endUpdate in cellsResized. The cells and bounds properties contain the respective arguments that were passed to cellsResized. mxEvent.MOVE_CELLS fires between begin- and endUpdate in moveCells. The cells, dx, dy, clone, target and location properties contain the respective arguments that were passed to moveCells. mxEvent.CELLS_MOVED fires between begin- and endUpdate in cellsMoved. The cells, dx, dy and disconnect properties contain the respective arguments that were passed to cellsMoved. mxEvent.CONNECT_CELL fires between begin- and endUpdate in connectCell. The edge, terminal and source properties contain the respective arguments that were passed to connectCell. mxEvent.CELL_CONNECTED fires between begin- and endUpdate in cellConnected. The edge, terminal and source properties contain the respective arguments that were passed to cellConnected. mxEvent.REPAINT fires if a repaint was requested by calling repaint. The region property contains the optional mxRectangle that was passed to repaint to define the dirty region.

Nested Class Summary

static interface

mxGraph.mxICellVisitor

Nested classes/interfaces inherited from class com.mxgraph.util.mxEventSource

mxEventSource.mxIEventListener

Field Summary

protected boolean	allowDanglingEdges Specifies if edges with disconnected terminals are allowed in the graph.
protected boolean	allowLoops Specifies if loops (aka self-references) are allowed.
protected boolean	allowNegativeCoordinates Specifies if negative coordinates for vertices are allowed.
protected String	alternateEdgeStyle Specifies the alternate edge style to be used if the main control point on an edge is being doubleclicked.
protected boolean	autoOrigin Specifies if the origin should be automatically updated.
protected boolean	autoSizeCells Specifies if the graph should automatically update the cell size after an edit.
protected int	border Border to be added to the bottom and right side when the container is being resized after the graph has been changed.
protected boolean	cellsBendable Specifies the return value for isCell(s)Bendable.
protected boolean	cellsCloneable Specifies the return value for isCell(s)Cloneable.
protected boolean	cellsDeletable Specifies the return value for isCell(s)Deletable.
protected boolean	cellsDisconnectable Specifies the return value for isCellDisconntableFromTerminal.
protected boolean	cellsEditable Specifies the return value for isCell(s)Editable.
protected boolean	cellsLocked Specifies the return value for isCell(s)Locked.
protected boolean	cellsMovable Specifies the return value for isCell(s)Movable.
protected boolean	cellsResizable Specifies the return value for isCell(s)Sizable.
protected boolean	cellsSelectable Specifies the return value for isCell(s)Selectable.
protected int	changesRepaintThreshold Specifies the maximum number of changes that should be processed to find the dirty region.
protected PropertyChangeSupport	changeSupport Property change event handling.
protected boolean	cloneInvalidEdges Specifies if edges that are cloned should be validated and only inserted if they are valid.
protected boolean	collapseToPreferredSize Specifies if the cell size should be changed to the preferred size when a cell is first collapsed.
protected boolean	connectableEdges Specifies if edges are connectable.
protected boolean	constrainChildren Specifies the return value for isConstrainChildren.
protected mxEdgeStyle.mxEdgeStyleFunction	defaultLoopStyle Specifies the default style for loops.
protected double	defaultOverlap Value returned by getOverlap if isAllowOverlapParent returns true for the given cell.
protected Object	defaultParent Specifies the default parent to be used to insert new cells.
protected boolean	disconnectOnMove Specifies if edges should be disconnected from their terminals when they are moved.
protected boolean	dropEnabled Specifies the return value for isDropEnabled.
protected boolean	edgeLabelsMovable Specifies the return value for edges in isLabelMovable.
protected boolean	enabled Specifies the return value for isEnabled.
protected boolean	extendParents Specifies if a parent should contain the child bounds after a resize of the child.
protected boolean	extendParentsOnAdd Specifies if parents should be extended according to the switch if cells are added.
protected mxEventSource.mxIEventListener	fullRepaintHandler Fires repaint events for full repaints.
protected mxEventSource.mxIEventListener	graphModelChangeHandler Fires repaint events for model changes.
protected boolean	gridEnabled Specifies if the grid is enabled.
protected int	gridSize Specifies the grid size.
protected boolean	htmlLabels Specifies the return value for isHtmlLabel.
protected static List<mxImageBundle>	imageBundles Holds the list of bundles.
protected boolean	keepEdgesInBackground Specifies if edges should appear in the background regardless of their order in the model.
protected boolean	keepEdgesInForeground Specifies if edges should appear in the foreground regardless of their order in the model.
protected boolean	labelsClipped Specifies the return value for isLabel(s)Clipped.
protected boolean	labelsVisible Specifies if labels should be visible.
protected mxRectangle	maximumGraphBounds that specifies the area in which all cells in the diagram should be placed.
protected mxRectangle	minimumGraphSize mxRectangle that specifies the minimum size of the graph canvas inside the scrollpane.
protected mxIGraphModel	model Holds the model that contains the cells to be displayed.
protected boolean	multigraph Specifies if multiple edges in the same direction between the same pair of vertices are allowed.
protected mxMultiplicity[]	multiplicities Specifies the multiplicities to be used for validation of the graph.
protected mxPoint	origin Holds the current automatic origin.
protected boolean	portsEnabled Specifies if ports are enabled.
protected boolean	resetEdgesOnConnect Specifies if edge control points should be reset after the the edge has been reconnected.
protected boolean	resetEdgesOnMove Specifies if edge control points should be reset after the move of a connected cell.
protected boolean	resetEdgesOnResize Specifies if loops (aka self-references) are allowed.
protected boolean	resetViewOnRootChange Specifies if the scale and translate should be reset if the root changes in the model.
protected mxGraphSelectionModel	selectionModel Holds the that models the current selection.
protected boolean	splitEnabled Specifies if dropping onto edges should be enabled.
protected mxStylesheet	stylesheet Holds the stylesheet that defines the appearance of the cells.
protected boolean	swimlaneNesting Specifies if nesting of swimlanes is allowed.
protected mxEventSource.mxIEventListener	updateOriginHandler Fires repaint events for full repaints.
static String	VERSION Holds the version number of this release.
protected boolean	vertexLabelsMovable Specifies the return value for vertices in isLabelMovable.
protected mxGraphView	view Holds the view that caches the cell states.

Fields inherited from class com.mxgraph.util.mxEventSource

eventListeners, eventsEnabled, eventSource

Constructor Summary

mxGraph()
Constructs a new graph with an empty mxGraphModel.

mxGraph(mxIGraphModel model)
Constructs a new graph for the specified model.

mxGraph(mxIGraphModel model, mxStylesheet stylesheet)
Constructs a new graph for the specified model.

mxGraph(mxStylesheet stylesheet)
Constructs a new graph for the specified model.

Method Summary

Object[]	addAllEdges(Object[] cells) Returns an array with the given cells and all edges that are connected to a cell or one of its descendants.
Object	addCell(Object cell) Adds the cell to the default parent.
Object	addCell(Object cell, Object parent) Adds the cell to the parent.
Object	addCell(Object cell, Object parent, Integer index, Object source, Object target) Adds the cell to the parent and connects it to the given source and target terminals.
Object[]	addCells(Object[] cells) Adds the cells to the default parent.
Object[]	addCells(Object[] cells, Object parent) Adds the cells to the parent.
Object[]	addCells(Object[] cells, Object parent, Integer index) Adds the cells to the parent at the given index.
Object[]	addCells(Object[] cells, Object parent, Integer index, Object source, Object target) Adds the cells to the parent at the given index, connecting each cell to the optional source and target terminal.
Object	addEdge(Object edge, Object parent, Object source, Object target, Integer index) Adds the edge to the parent and connects it to the given source and target terminals.
void	addImageBundle(mxImageBundle bundle) Adds the specified bundle.
void	addPropertyChangeListener(PropertyChangeListener listener)
void	addPropertyChangeListener(String propertyName, PropertyChangeListener listener)
void	addSelectionCell(Object cell)
void	addSelectionCells(Object[] cells)
Object[]	alignCells(String align) Aligns the selection cells vertically or horizontally according to the given alignment.
Object[]	alignCells(String align, Object[] cells) Aligns the given cells vertically or horizontally according to the given alignment.
Object[]	alignCells(String align, Object[] cells, Object param) Aligns the given cells vertically or horizontally according to the given alignment using the optional parameter as the coordinate.
void	cellConnected(Object edge, Object terminal, boolean source, mxConnectionConstraint constraint) Sets the new terminal for the given edge and resets the edge points if isResetEdgesOnConnect returns true.
protected void	cellDrawn(mxICanvas canvas, mxCellState state, Object element, Object labelElement) Called when a cell has been painted as the specified object, typically a DOM node that represents the given cell graphically in a document.
void	cellLabelChanged(Object cell, Object value, boolean autoSize) Sets the new label for a cell.
void	cellsAdded(Object[] cells, Object parent, Integer index, Object source, Object target, boolean absolute) Adds the specified cells to the given parent.
void	cellsAdded(Object[] cells, Object parent, Integer index, Object source, Object target, boolean absolute, boolean constrain) Adds the specified cells to the given parent.
void	cellsFolded(Object[] cells, boolean collapse, boolean recurse) Invokes cellsFoldable with checkFoldable set to false.
void	cellsFolded(Object[] cells, boolean collapse, boolean recurse, boolean checkFoldable) Sets the collapsed state of the specified cells.
void	cellSizeUpdated(Object cell, boolean ignoreChildren) Updates the size of the given cell in the model using getPreferredSizeForCell to get the new size.
void	cellsMoved(Object[] cells, double dx, double dy, boolean disconnect, boolean constrain) Moves the specified cells by the given vector, disconnecting the cells using disconnectGraph if disconnect is true.
void	cellsOrdered(Object[] cells, boolean back) Moves the given cells to the front or back.
void	cellsRemoved(Object[] cells) Removes the given cells from the model.
void	cellsResized(Object[] cells, mxRectangle[] bounds) Sets the bounds of the given cells and fires a event.
void	cellsToggled(Object[] cells, boolean show) Sets the visible state of the specified cells.
void	clearSelection()
Object[]	cloneCells(Object[] cells) Clones all cells in the given array.
Object[]	cloneCells(Object[] cells, boolean allowInvalidEdges) Returns the clones for the given cells.
Object	connectCell(Object edge, Object terminal, boolean source) Connects the specified end of the given edge to the given terminal using cellConnected and fires mxEvent.CONNECT_CELL while the transaction is in progress.
Object	connectCell(Object edge, Object terminal, boolean source, mxConnectionConstraint constraint) Connects the specified end of the given edge to the given terminal using cellConnected and fires mxEvent.CONNECT_CELL while the transaction is in progress.
void	constrainChild(Object cell) Keeps the given cell inside the bounds returned by getCellContainmentArea for its parent, according to the rules defined by getOverlap and isConstrainChild.
String	convertValueToString(Object cell) Returns the textual representation for the given cell.
Object	createEdge(Object parent, String id, Object value, Object source, Object target, String style) Hook method that creates the new edge for insertEdge.
protected mxGraphView	createGraphView() Constructs a new view to be used in this graph.
Object	createGroupCell(Object[] cells) Hook for creating the group cell to hold the given array of if no group cell was given to the function.
protected mxGraphSelectionModel	createSelectionModel() Constructs a new selection model to be used in this graph.
protected mxStylesheet	createStylesheet() Constructs a new stylesheet to be used in this graph.
Object	createVertex(Object parent, String id, Object value, double x, double y, double width, double height, String style) Hook method that creates the new vertex for insertVertex.
Object	createVertex(Object parent, String id, Object value, double x, double y, double width, double height, String style, boolean relative) Hook method that creates the new vertex for insertVertex.
void	disconnectGraph(Object[] cells) Disconnects the given edges from the terminals which are not in the given array.
void	drawCell(mxICanvas canvas, Object cell) Draws the given cell and its descendants onto the specified canvas.
void	drawGraph(mxICanvas canvas) Draws the graph onto the given canvas.
void	drawState(mxICanvas canvas, mxCellState state, boolean drawLabel) Draws the cell state with the given label onto the canvas.
void	enterGroup()
void	enterGroup(Object cell) Uses the given cell as the root of the displayed cell hierarchy.
void	exitGroup() Changes the current root to the next valid root in the displayed cell hierarchy.
void	extendParent(Object cell) Resizes the parents recursively so that they contain the complete area of the resized child cell.
List<Object>	findTreeRoots(Object parent) Returns all visible children in the given parent which do not have incoming edges.
List<Object>	findTreeRoots(Object parent, boolean isolate) Returns all visible children in the given parent which do not have incoming edges.
List<Object>	findTreeRoots(Object parent, boolean isolate, boolean invert) Returns all visible children in the given parent which do not have incoming edges.
Object	flipEdge(Object edge) Called when the main control point of the edge is double-clicked.
Object[]	foldCells(boolean collapse) Sets the collapsed state of the selection cells without recursion.
Object[]	foldCells(boolean collapse, boolean recurse) Sets the collapsed state of the selection cells.
Object[]	foldCells(boolean collapse, boolean recurse, Object[] cells) Invokes foldCells with checkFoldable set to false.
Object[]	foldCells(boolean collapse, boolean recurse, Object[] cells, boolean checkFoldable) Sets the collapsed state of the specified cells and all descendants if recurse is true.
mxConnectionConstraint[]	getAllConnectionConstraints(mxCellState terminal, boolean source) Returns an array of all constraints for the given terminal.
Object[]	getAllEdges(Object[] cells) Returns all edges connected to the given cells or their descendants.
String	getAlternateEdgeStyle() Returns alternateEdgeStyle.
int	getBorder() Returns the value of .
mxRectangle	getBoundingBox(Object cell) Returns the bounds of the given cell.
mxRectangle	getBoundingBox(Object cell, boolean includeEdges) Returns the bounding box of the given cell including all connected edges if includeEdge is true.
mxRectangle	getBoundingBox(Object cell, boolean includeEdges, boolean includeDescendants) Returns the bounding box of the given cell including all connected edges if includeEdge is true.
mxRectangle	getBoundingBoxFromGeometry(Object[] cells) Returns the bounding box for the geometries of the vertices in the given array of cells.
mxRectangle	getBoundsForCells(Object[] cells, boolean includeEdges, boolean includeDescendants, boolean boundingBox) Returns the bounds for the given cells.
mxRectangle	getBoundsForGroup(Object group, Object[] children, double border) Returns the bounds to be used for the given group and children.
mxRectangle	getCellBounds(Object cell) Returns the bounds of the given cell.
mxRectangle	getCellBounds(Object cell, boolean includeEdges) Returns the bounds of the given cell including all connected edges if includeEdge is true.
mxRectangle	getCellBounds(Object cell, boolean includeEdges, boolean includeDescendants) Returns the bounds of the given cell including all connected edges if includeEdge is true.
mxRectangle	getCellBounds(Object cell, boolean includeEdges, boolean includeDescendants, boolean boundingBox) Returns the bounds of the given cell including all connected edges if includeEdge is true.
mxRectangle	getCellContainmentArea(Object cell) Returns the mxRectangle inside which a cell is to be kept.
mxGeometry	getCellGeometry(Object cell) Returns the geometry for the given cell.
Object[]	getCellsBeyond(double x0, double y0, Object parent, boolean rightHalfpane, boolean bottomHalfpane) Returns the children of the given parent that are contained in the halfpane from the given point (x0, y0) rightwards and downwards depending on rightHalfpane and bottomHalfpane.
Object[]	getCellsForGroup(Object[] cells) Returns the cells with the same parent as the first cell in the given array.
Map<String,Object>	getCellStyle(Object cell) Returns an array of key, value pairs representing the cell style for the given cell.
String	getCellValidationError(Object cell) Checks all multiplicities that cannot be enforced while the graph is being modified, namely, all multiplicities that require a minimum of 1 edge.
int	getChangesRepaintThreshold()
Object[]	getChildCells(Object parent) Returns the visible children of the given parent.
Object[]	getChildCells(Object parent, boolean vertices, boolean edges) Returns the visible child vertices or edges in the given parent.
Object[]	getChildEdges(Object parent) Returns the visible child edges of the given parent.
mxPoint	getChildOffsetForCell(Object cell) Returns the offset to be used for the cells inside the given cell.
Object[]	getChildVertices(Object parent) Returns the visible child vertices of the given parent.
Object[]	getCloneableCells(Object[] cells) Returns the cells which are movable in the given array of cells.
mxConnectionConstraint	getConnectionConstraint(mxCellState edge, mxCellState terminal, boolean source) Returns an connection constraint that describes the given connection point.
mxPoint	getConnectionPoint(mxCellState vertex, mxConnectionConstraint constraint) Sets the connection constraint that describes the given connection point.
Object[]	getConnections(Object cell) Returns all visible edges connected to the given cell without loops.
Object[]	getConnections(Object cell, Object parent) Returns all visible edges connected to the given cell without loops.
Object[]	getConnections(Object cell, Object parent, boolean recurse) Returns all visible edges connected to the given cell without loops.
Object	getCurrentRoot() Returns the current root of the displayed cell hierarchy.
mxEdgeStyle.mxEdgeStyleFunction	getDefaultLoopStyle() Returns the default edge style used for loops.
double	getDefaultOverlap() Gets defaultOverlap.
Object	getDefaultParent() Returns the first child of the root in the model, that is, the first or default layer of the diagram.
Object[]	getDeletableCells(Object[] cells) Returns the cells which are movable in the given array of cells.
Object	getDropTarget(Object[] cells, Point pt, Object cell) Returns the given cell if it is a drop target for the given cells or the nearest ancestor that may be used as a drop target for the given cells.
Object[]	getEdges(Object cell) Returns all visible edges connected to the given cell including loops.
Object[]	getEdges(Object cell, Object parent) Returns all visible edges connected to the given cell including loops.
Object[]	getEdges(Object cell, Object parent, boolean incoming, boolean outgoing, boolean includeLoops) Returns the incoming and/or outgoing edges for the given cell.
Object[]	getEdges(Object cell, Object parent, boolean incoming, boolean outgoing, boolean includeLoops, boolean recurse) Returns the incoming and/or outgoing edges for the given cell.
Object[]	getEdgesBetween(Object source, Object target) Returns the edges between the given source and target.
Object[]	getEdgesBetween(Object source, Object target, boolean directed) Returns the edges between the given source and target.
String	getEdgeValidationError(Object edge, Object source, Object target) Returns the validation error message to be displayed when inserting or changing an edges' connectivity.
Object[]	getFoldableCells(Object[] cells, boolean collapse) Returns the cells which are movable in the given array of cells.
mxRectangle	getGraphBounds() Returns the bounds of the visible graph.
int	getGridSize() Returns the grid size.
String	getImage(mxCellState state) Returns the image URL for the given cell state.
List<mxImageBundle>	getImageBundles() Returns the image bundles
void	getImageBundles(List<mxImageBundle> value) Returns the image bundles
String	getImageFromBundles(String key) Searches all bundles for the specified key and returns the value for the first match or null if the key is not found.
Object[]	getIncomingEdges(Object cell) Returns all incoming visible edges connected to the given cell without loops.
Object[]	getIncomingEdges(Object cell, Object parent) Returns the visible incoming edges for the given cell.
String	getLabel(Object cell) Returns a string or DOM node that represents the label for the given cell.
protected String	getLinkForCell(Object cell) Returns the hyperlink to be used for the given cell.
mxRectangle	getMaximumGraphBounds()
mxRectangle	getMinimumGraphSize() Returns the minimum size of the diagram.
mxIGraphModel	getModel() Returns the graph model that contains the graph data.
Object[]	getMovableCells(Object[] cells) Returns the cells which are movable in the given array of cells.
mxMultiplicity[]	getMultiplicities()
Object[]	getOpposites(Object[] edges, Object terminal) Returns all distinct visible opposite cells of the terminal on the given edges.
Object[]	getOpposites(Object[] edges, Object terminal, boolean sources, boolean targets) Returns all distincts visible opposite cells for the specified terminal on the given edges.
mxPoint	getOrigin() Returns origin.
Object[]	getOutgoingEdges(Object cell) Returns all outgoing visible edges connected to the given cell without loops.
Object[]	getOutgoingEdges(Object cell, Object parent) Returns the visible outgoing edges for the given cell.
double	getOverlap(Object cell) Returns a decimal number representing the amount of the width and height of the given cell that is allowed to overlap its parent.
mxRectangle	getPaintBounds(Object[] cells) Returns the bounding box of the given cells and their descendants.
mxRectangle	getPreferredSizeForCell(Object cell) Returns the preferred width and height of the given as an .
Object[]	getRemovedCellsForChanges(List<mxUndoableEdit.mxUndoableChange> changes) Returns the cells that have been removed from the model.
Object	getSelectionCell()
Object[]	getSelectionCells()
Object[]	getSelectionCellsForChanges(List<mxUndoableEdit.mxUndoableChange> changes) Returns the cells to be selected for the given list of changes.
int	getSelectionCount()
mxGraphSelectionModel	getSelectionModel()
mxRectangle	getStartSize(Object swimlane) Returns the start size of the given swimlane, that is, the width or height of the part that contains the title, depending on the horizontal style.
mxStylesheet	getStylesheet() Returns the stylesheet that provides the style.
protected String	getTargetForCell(Object cell) Returns the hyperlink to be used for the given cell.
Object	getTerminalForPort(Object cell, boolean source) Returns the terminal to be used for a given port.
String	getToolTipForCell(Object cell) Returns the tooltip to be used for the given cell.
mxPoint	getTranslateForRoot(Object cell) Returns the translation to be used if the given cell is the root cell as an .
mxGraphView	getView() Returns the view that contains the cell states.
mxRectangle	graphModelChanged(mxIGraphModel sender, List<mxUndoableEdit.mxUndoableChange> changes) Called when the graph model changes.
Object	groupCells() Groups the selection cells.
Object	groupCells(Object group) Groups the selection cells and adds them to the given group.
Object	groupCells(Object group, double border) Groups the selection cells and adds them to the given group.
Object	groupCells(Object group, double border, Object[] cells) Adds the cells into the given group.
void	home() Uses the root of the model as the root of the displayed cell hierarchy and selects the previous root.
Object	insertEdge(Object parent, String id, Object value, Object source, Object target) Creates and adds a new edge with an empty style.
Object	insertEdge(Object parent, String id, Object value, Object source, Object target, String style) Adds a new edge into the given parent using value as the user object and the given source and target as the terminals of the new edge.
Object	insertVertex(Object parent, String id, Object value, double x, double y, double width, double height) Creates and adds a new vertex with an empty style.
Object	insertVertex(Object parent, String id, Object value, double x, double y, double width, double height, String style) Adds a new vertex into the given parent using value as the user object and the given coordinates as the geometry of the new vertex.
Object	insertVertex(Object parent, String id, Object value, double x, double y, double width, double height, String style, boolean relative) Adds a new vertex into the given parent using value as the user object and the given coordinates as the geometry of the new vertex.
boolean	isAllowDanglingEdges() Returns allowDanglingEdges
boolean	isAllowLoops() Returns allowLoops.
boolean	isAllowNegativeCoordinates() Returns isAllowNegativeCoordinates.
boolean	isAllowOverlapParent(Object cell) Returns true if the given cell is allowed to be placed outside of the parents area.
boolean	isAutoOrigin() Returns autoOrigin.
boolean	isAutoSizeCell(Object cell) Returns true if the size of the given cell should automatically be updated after a change of the label.
boolean	isAutoSizeCells() Returns true if the size of the given cell should automatically be updated after a change of the label.
boolean	isCellBendable(Object cell) Returns true if the given cell is bendable.
boolean	isCellCloneable(Object cell) Returns the constant true.
boolean	isCellCollapsed(Object cell) Returns true if the given cell is collapsed in this graph.
boolean	isCellConnectable(Object cell) Returns true if the given cell is connectable in this graph.
boolean	isCellDeletable(Object cell) Returns true if the given cell is movable.
boolean	isCellDisconnectable(Object cell, Object terminal, boolean source) Returns true if the given cell is disconnectable from the source or target terminal.
boolean	isCellEditable(Object cell) Returns true if the given cell is movable.
boolean	isCellFoldable(Object cell, boolean collapse) Returns true if the given cell is expandable.
boolean	isCellLocked(Object cell) Returns true if the given cell may not be moved, sized, bended, disconnected, edited or selected.
boolean	isCellMovable(Object cell) Returns true if the given cell is movable.
boolean	isCellResizable(Object cell) Returns true if the given cell is resizable.
boolean	isCellsBendable() Returns cellsBendable.
boolean	isCellsCloneable() Returns cellsCloneable.
boolean	isCellsDeletable() Returns cellsDeletable.
boolean	isCellsDisconnectable() Returns cellsDisconnectable.
boolean	isCellsEditable() Returns true if editing is allowed in this graph.
boolean	isCellSelectable(Object cell) Returns true if the given cell is selectable.
boolean	isCellSelected(Object cell)
boolean	isCellsLocked() Returns cellsLocked, the default return value for isCellLocked.
boolean	isCellsMovable() Returns cellsMovable.
boolean	isCellsResizable() Returns true if the given cell is resizable.
boolean	isCellsSelectable() Returns cellsSelectable.
boolean	isCellVisible(Object cell) Returns true if the given cell is visible in this graph.
boolean	isCloneInvalidEdges() Returns cloneInvalidEdges.
boolean	isCollapseToPreferredSize() Returns collapseToPreferredSize.
boolean	isConnectableEdges() Returns connectableEdges.
boolean	isConstrainChild(Object cell) Returns true if the given cell should be kept inside the bounds of its parent according to the rules defined by getOverlap and isAllowOverlapParent.
boolean	isConstrainChildren() Returns constrainChildren.
boolean	isDisconnectOnMove() Returns disconnectOnMove
boolean	isDropEnabled() Returns true if the graph allows drop into other cells.
boolean	isEdgeLabelsMovable() Returns edgeLabelsMovable.
boolean	isEdgeValid(Object edge, Object source, Object target) Checks if the return value of getEdgeValidationError for the given arguments is null.
boolean	isEnabled() Returns true if the graph is .
boolean	isExtendParent(Object cell) Returns true if the parent of the given cell should be extended if the child has been resized so that it overlaps the parent.
boolean	isExtendParents() Returns extendParents.
boolean	isExtendParentsOnAdd() Returns extendParentsOnAdd.
boolean	isGridEnabled() Returns true if the grid is enabled.
boolean	isHtmlLabel(Object cell) Returns true if the label must be rendered as HTML markup.
boolean	isHtmlLabels()
boolean	isKeepEdgesInBackground()
boolean	isKeepEdgesInForeground()
boolean	isLabelClipped(Object cell) Returns true if the overflow portion of labels should be hidden.
boolean	isLabelMovable(Object cell) Returns true if the given edges's label is moveable.
boolean	isLabelsClipped() Returns labelsClipped.
boolean	isLabelsVisible()
boolean	isLoop(mxCellState state) Returns true if the given cell state is a loop.
boolean	isMultigraph() Returns multigraph.
boolean	isOrthogonal(mxCellState edge) Returns true if perimeter points should be computed such that the resulting edge has only horizontal or vertical segments.
boolean	isPort(Object cell) Returns true if the given cell is a "port", that is, when connecting to it, the cell returned by getTerminalForPort should be used as the terminal and the port should be referenced by the ID in either the mxConstants.STYLE_SOURCE_PORT or the or the mxConstants.STYLE_TARGET_PORT.
boolean	isPortsEnabled() Returns true if ports are enabled.
boolean	isResetEdgesOnConnect() Returns resetEdgesOnConnect.
boolean	isResetEdgesOnMove() Returns resetEdgesOnMove.
boolean	isResetEdgesOnResize() Returns resetEdgesOnResize.
boolean	isResetViewOnRootChange() Returns resetViewOnRootChange.
boolean	isSelectionEmpty()
boolean	isSplitEnabled() Affects the return values of isValidDropTarget to allow for edges as drop targets.
boolean	isSplitTarget(Object target, Object[] cells) Returns true if split is enabled and the given edge may be splitted into two edges with the given cell as a new terminal between the two.
boolean	isSwimlane(Object cell) Returns true if the given cell is a swimlane.
boolean	isSwimlaneNesting() Returns swimlaneNesting.
boolean	isTerminalPointMovable(Object cell, boolean source) Function: isTerminalPointMovable Returns true if the given terminal point is movable.
boolean	isValidAncestor(Object cell, Object parent, boolean recurse) Returns whether or not the specified parent is a valid ancestor of the specified cell, either direct or indirectly based on whether ancestor recursion is enabled.
boolean	isValidConnection(Object source, Object target) Returns true if the given target cell is a valid target for source.
boolean	isValidDropTarget(Object cell, Object[] cells) Returns true if the given cell is a valid drop target for the specified cells.
boolean	isValidRoot(Object cell) Returns true if the given cell is a valid root for the cell display hierarchy.
boolean	isValidSource(Object cell) Returns true if the given cell is a valid source for new connections.
boolean	isValidTarget(Object cell) Returns isValidSource for the given cell.
boolean	isVertexLabelsMovable() Returns vertexLabelsMovable.
static void	main(String[] args) Prints the version number on the console.
Object[]	moveCells(Object[] cells, double dx, double dy) Moves the cells by the given amount.
Object[]	moveCells(Object[] cells, double dx, double dy, boolean clone) Moves or clones the cells and moves the cells or clones by the given amount.
Object[]	moveCells(Object[] cells, double dx, double dy, boolean clone, Object target, Point location) Moves or clones the specified cells and moves the cells or clones by the given amount, adding them to the optional target cell.
Object[]	orderCells(boolean back) Moves the selection cells to the front or back.
Object[]	orderCells(boolean back, Object[] cells) Moves the given cells to the front or back.
protected Map<String,Object>	postProcessCellStyle(Map<String,Object> style) Tries to resolve the value for the image style in the image bundles and turns short data URIs as defined in mxImageBundle to data URIs as defined in RFC 2397 of the IETF.
mxRectangle	processChange(mxUndoableEdit.mxUndoableChange change, boolean invalidate, boolean ignoreDirty) Processes the given change and invalidates the respective cached data in .
mxRectangle	processChanges(List<mxUndoableEdit.mxUndoableChange> changes, boolean invalidate, boolean ignoreDirty) Processes the changes and returns the minimal rectangle to be repainted in the buffer.
void	refresh() Clears all cell states or the states for the hierarchy starting at the given cell and validates the graph.
Object[]	removeCells() Removes the selection cells from the graph.
Object[]	removeCells(Object[] cells) Removes the given cells from the graph.
Object[]	removeCells(Object[] cells, boolean includeEdges) Removes the given cells from the graph including all connected edges if includeEdges is true.
Object[]	removeCellsFromParent() Removes the selection cells from their parents and adds them to the default parent returned by getDefaultParent.
Object[]	removeCellsFromParent(Object[] cells) Removes the specified cells from their parents and adds them to the default parent.
void	removeImageBundle(mxImageBundle bundle) Removes the specified bundle.
void	removePropertyChangeListener(PropertyChangeListener listener)
void	removePropertyChangeListener(String propertyName, PropertyChangeListener listener)
void	removeSelectionCell(Object cell)
void	removeSelectionCells(Object[] cells)
protected void	removeStateForCell(Object cell) Removes all cached information for the given cell and its descendants.
void	repaint() Fires a repaint event.
void	repaint(mxRectangle region) Fires a repaint event.
Object	resetEdge(Object edge) Resets the control points of the given edge.
void	resetEdges(Object[] cells) Resets the control points of the edges that are connected to the given cells if not both ends of the edge are in the given cells array.
Object	resizeCell(Object cell, mxRectangle bounds) Sets the bounds of the given cell using resizeCells.
Object[]	resizeCells(Object[] cells, mxRectangle[] bounds) Sets the bounds of the given cells and fires a mxEvent.RESIZE_CELLS event.
void	selectAll()
void	selectAll(Object parent) Selects all children of the given parent cell or the children of the default parent if no parent is specified.
void	selectCell(boolean isNext, boolean isParent, boolean isChild) Selects the next, parent, first child or previous cell, if all arguments are false.
void	selectCells(boolean vertices, boolean edges) Selects all vertices and/or edges depending on the given boolean arguments recursively, starting at the default parent.
void	selectCells(boolean vertices, boolean edges, Object parent) Selects all vertices and/or edges depending on the given boolean arguments recursively, starting at the given parent or the default parent if no parent is specified.
void	selectChildCell() Selects the first child cell.
void	selectEdges() Selects all vertices inside the default parent.
void	selectEdges(Object parent) Selects all vertices inside the given parent or the default parent if no parent is given.
void	selectNextCell() Selects the next cell.
void	selectParentCell() Selects the parent cell.
void	selectPreviousCell() Selects the previous cell.
void	selectVertices() Selects all vertices inside the default parent.
void	selectVertices(Object parent) Selects all vertices inside the given parent or the default parent if no parent is given.
void	setAllowDanglingEdges(boolean value) Sets allowDanglingEdges.
void	setAllowLoops(boolean value) Sets allowLoops.
void	setAllowNegativeCoordinates(boolean value)
void	setAlternateEdgeStyle(String value) Sets alternateEdgeStyle.
void	setAutoOrigin(boolean value)
void	setAutoSizeCells(boolean value) Specifies if cell sizes should be automatically updated after a label change.
void	setBorder(int value) Sets the value of .
void	setCellsBendable(boolean value) Sets cellsBendable.
void	setCellsCloneable(boolean value) Specifies if the graph should allow cloning of cells by holding down the control key while cells are being moved.
void	setCellsDeletable(boolean value) Sets cellsDeletable.
void	setCellsDisconnectable(boolean value) Sets cellsDisconnectable.
void	setCellsEditable(boolean value) Sets if the graph is editable.
void	setCellsLocked(boolean value) Sets cellsLocked, the default return value for isCellLocked and fires a property change event for cellsLocked.
void	setCellsMovable(boolean value) Sets cellsMovable.
void	setCellsResizable(boolean value) Sets if the graph is resizable.
void	setCellsSelectable(boolean value) Sets cellsSelectable.
Object[]	setCellStyle(String style) Sets the style of the selection cells to the given value.
Object[]	setCellStyle(String style, Object[] cells) Sets the style of the specified cells.
Object[]	setCellStyleFlags(String key, int flag, boolean value) Sets or toggles the given bit for the given key in the styles of the selection cells.
Object[]	setCellStyleFlags(String key, int flag, Boolean value, Object[] cells) Sets or toggles the given bit for the given key in the styles of the specified cells.
Object[]	setCellStyles(String key, String value) Sets the key to value in the styles of the selection cells.
Object[]	setCellStyles(String key, String value, Object[] cells) Sets the key to value in the styles of the given cells.
void	setChangesRepaintThreshold(int value)
void	setCloneInvalidEdges(boolean value) Sets cloneInvalidEdge.
void	setCollapseToPreferredSize(boolean value)
void	setConnectableEdges(boolean value) Sets connetableEdges.
void	setConnectionConstraint(Object edge, Object terminal, boolean source, mxConnectionConstraint constraint) Sets the connection constraint that describes the given connection point.
void	setConstrainChildren(boolean value)
void	setDefaultLoopStyle(mxEdgeStyle.mxEdgeStyleFunction value) Sets the default style used for loops.
void	setDefaultOverlap(double value) Sets defaultOverlap.
void	setDefaultParent(Object value) Sets the default parent to be returned by getDefaultParent.
void	setDisconnectOnMove(boolean value) Sets disconnectOnMove.
void	setDropEnabled(boolean value) Sets dropEnabled.
void	setEdgeLabelsMovable(boolean value) Returns edgeLabelsMovable.
void	setEnabled(boolean value) Specifies if the graph should allow any interactions.
void	setExtendParents(boolean value) Sets extendParents.
void	setExtendParentsOnAdd(boolean value) Sets extendParentsOnAdd.
void	setGridEnabled(boolean value) Sets if the grid is enabled.
void	setGridSize(int value) Sets the grid size and fires a property change event for gridSize.
void	setHtmlLabels(boolean value)
void	setKeepEdgesInBackground(boolean value)
void	setKeepEdgesInForeground(boolean value)
void	setLabelsClipped(boolean value) Sets labelsClipped.
void	setLabelsVisible(boolean value)
void	setMaximumGraphBounds(mxRectangle value)
void	setMinimumGraphSize(mxRectangle value)
void	setModel(mxIGraphModel value) Sets the graph model that contains the data, and fires an mxEvent.CHANGE followed by an mxEvent.REPAINT event.
void	setMultigraph(boolean value) Sets multigraph.
void	setMultiplicities(mxMultiplicity[] value)
void	setOrigin(mxPoint value)
void	setPortsEnabled(boolean value) Sets if ports are enabled.
void	setResetEdgesOnConnect(boolean value) Sets resetEdgesOnConnect.
void	setResetEdgesOnMove(boolean value) Sets resetEdgesOnMove.
void	setResetEdgesOnResize(boolean value) Sets resetEdgesOnResize.
void	setResetViewOnRootChange(boolean value) Sets resetEdgesOnResize.
void	setSelectionCell(Object cell)
void	setSelectionCells(Collection<Object> cells)
void	setSelectionCells(Object[] cells)
void	setSplitEnabled(boolean value) Sets splitEnabled.
void	setStylesheet(mxStylesheet value) Sets the stylesheet that provides the style.
void	setSwimlaneNesting(boolean value) Sets swimlaneNesting.
void	setVertexLabelsMovable(boolean value) Sets vertexLabelsMovable.
void	setView(mxGraphView value) Sets the view that contains the cell states.
double	snap(double value) Snaps the given numeric value to the grid if is true.
Object	splitEdge(Object edge, Object[] cells)
Object	splitEdge(Object edge, Object[] cells, double dx, double dy)
Object	splitEdge(Object edge, Object[] cells, Object newEdge, double dx, double dy) Splits the given edge by adding a newEdge between the previous source and the given cell and reconnecting the source of the given edge to the given cell.
void	swapBounds(Object cell, boolean willCollapse) Swaps the alternate and the actual bounds in the geometry of the given cell invoking updateAlternateBounds before carrying out the swap.
Object[]	toggleCells(boolean show) Sets the visible state of the selection cells.
Object[]	toggleCells(boolean show, Object[] cells) Sets the visible state of the specified cells.
Object[]	toggleCells(boolean show, Object[] cells, boolean includeEdges) Sets the visible state of the specified cells and all connected edges if includeEdges is true.
Object	toggleCellStyle(String key, boolean defaultValue, Object cell) Toggles the boolean value for the given key in the style of the given cell.
Object[]	toggleCellStyleFlags(String key, int flag) Toggles the given bit for the given key in the styles of the selection cells.
Object[]	toggleCellStyleFlags(String key, int flag, Object[] cells) Toggles the given bit for the given key in the styles of the specified cells.
Object[]	toggleCellStyles(String key, boolean defaultValue) Toggles the boolean value for the given key in the style of the selection cells.
Object[]	toggleCellStyles(String key, boolean defaultValue, Object[] cells) Toggles the boolean value for the given key in the style of the given cells.
void	translateCell(Object cell, double dx, double dy) Translates the geometry of the given cell and stores the new, translated geometry in the model as an atomic change.
void	traverse(Object vertex, boolean directed, mxGraph.mxICellVisitor visitor) Traverses the tree starting at the given vertex.
void	traverse(Object vertex, boolean directed, mxGraph.mxICellVisitor visitor, Object edge, Set<Object> visited) Traverses the (directed) graph invoking the given function for each visited vertex and edge.
Object[]	ungroupCells() Ungroups the selection cells.
Object[]	ungroupCells(Object[] cells) Ungroups the given cells by moving the children the children to their parents parent and removing the empty groups.
void	updateAlternateBounds(Object cell, mxGeometry geo, boolean willCollapse) Updates or sets the alternate bounds in the given geometry for the given cell depending on whether the cell is going to be collapsed.
Object	updateCellSize(Object cell) Updates the size of the given cell in the model using getPreferredSizeForCell to get the new size.
Object	updateCellSize(Object cell, boolean ignoreChildren) Updates the size of the given cell in the model using getPreferredSizeForCell to get the new size.
Object[]	updateGroupBounds() Updates the bounds of the given array of groups so that it includes all child vertices.
Object[]	updateGroupBounds(Object[] cells) Updates the bounds of the given array of groups so that it includes all child vertices.
Object[]	updateGroupBounds(Object[] cells, int border) Updates the bounds of the given array of groups so that it includes all child vertices.
Object[]	updateGroupBounds(Object[] cells, int border, boolean moveParent) Updates the bounds of the given array of groups so that it includes all child vertices.
protected void	updateOrigin() Extends the canvas by doing another validation with a shifted global translation if the bounds of the graph are below (0,0).
String	validateCell(Object cell, Hashtable<Object,Object> context) Hook method for subclassers to return an error message for the given cell and validation context.
String	validateEdge(Object edge, Object source, Object target) Hook method for subclassers to return an error message for the given edge and terminals.

Methods inherited from class com.mxgraph.util.mxEventSource

addListener, fireEvent, fireEvent, getEventSource, isEventsEnabled, removeListener, removeListener, setEventsEnabled, setEventSource

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

VERSION

public static final String VERSION

Holds the version number of this release. Current version is 2.5.0.2.

See Also:

Constant Field Values

changeSupport

protected PropertyChangeSupport changeSupport

Property change event handling.

model

protected mxIGraphModel model

Holds the model that contains the cells to be displayed.

view

protected mxGraphView view

Holds the view that caches the cell states.

stylesheet

protected mxStylesheet stylesheet

Holds the stylesheet that defines the appearance of the cells.

selectionModel

protected mxGraphSelectionModel selectionModel

Holds the that models the current selection.

gridSize

protected int gridSize

Specifies the grid size. Default is 10.

gridEnabled

protected boolean gridEnabled

Specifies if the grid is enabled. Default is true.

portsEnabled

protected boolean portsEnabled

Specifies if ports are enabled. This is used in to update the respective style. Default is true.

defaultOverlap

protected double defaultOverlap

Value returned by getOverlap if isAllowOverlapParent returns true for the given cell. getOverlap is used in keepInside if isKeepInsideParentOnMove returns true. The value specifies the portion of the child which is allowed to overlap the parent.

defaultParent

protected Object defaultParent

Specifies the default parent to be used to insert new cells. This is used in getDefaultParent. Default is null.

alternateEdgeStyle

protected String alternateEdgeStyle

Specifies the alternate edge style to be used if the main control point on an edge is being doubleclicked. Default is null.

enabled

protected boolean enabled

Specifies the return value for isEnabled. Default is true.

cellsLocked

protected boolean cellsLocked

Specifies the return value for isCell(s)Locked. Default is false.

cellsEditable

protected boolean cellsEditable

Specifies the return value for isCell(s)Editable. Default is true.

cellsResizable

protected boolean cellsResizable

Specifies the return value for isCell(s)Sizable. Default is true.

cellsMovable

protected boolean cellsMovable

Specifies the return value for isCell(s)Movable. Default is true.

cellsBendable

protected boolean cellsBendable

Specifies the return value for isCell(s)Bendable. Default is true.

cellsSelectable

protected boolean cellsSelectable

Specifies the return value for isCell(s)Selectable. Default is true.

cellsDeletable

protected boolean cellsDeletable

Specifies the return value for isCell(s)Deletable. Default is true.

cellsCloneable

protected boolean cellsCloneable

Specifies the return value for isCell(s)Cloneable. Default is true.

cellsDisconnectable

protected boolean cellsDisconnectable

Specifies the return value for isCellDisconntableFromTerminal. Default is true.

labelsClipped

protected boolean labelsClipped

Specifies the return value for isLabel(s)Clipped. Default is false.

edgeLabelsMovable

protected boolean edgeLabelsMovable

Specifies the return value for edges in isLabelMovable. Default is true.

vertexLabelsMovable

protected boolean vertexLabelsMovable

Specifies the return value for vertices in isLabelMovable. Default is false.

dropEnabled

protected boolean dropEnabled

Specifies the return value for isDropEnabled. Default is true.

splitEnabled

protected boolean splitEnabled

Specifies if dropping onto edges should be enabled. Default is true.

autoSizeCells

protected boolean autoSizeCells

Specifies if the graph should automatically update the cell size after an edit. This is used in isAutoSizeCell. Default is false.

maximumGraphBounds

protected mxRectangle maximumGraphBounds

that specifies the area in which all cells in the diagram should be placed. Uses in getMaximumGraphBounds. Use a width or height of 0 if you only want to give a upper, left corner.

minimumGraphSize

protected mxRectangle minimumGraphSize

mxRectangle that specifies the minimum size of the graph canvas inside the scrollpane.

border

protected int border

Border to be added to the bottom and right side when the container is being resized after the graph has been changed. Default is 0.

keepEdgesInForeground

protected boolean keepEdgesInForeground

Specifies if edges should appear in the foreground regardless of their order in the model. This has precendence over keepEdgeInBackground Default is false.

keepEdgesInBackground

protected boolean keepEdgesInBackground

Specifies if edges should appear in the background regardless of their order in the model. Default is false.

collapseToPreferredSize

protected boolean collapseToPreferredSize

Specifies if the cell size should be changed to the preferred size when a cell is first collapsed. Default is true.

allowNegativeCoordinates

protected boolean allowNegativeCoordinates

Specifies if negative coordinates for vertices are allowed. Default is true.

constrainChildren

protected boolean constrainChildren

Specifies the return value for isConstrainChildren. Default is true.

extendParents

protected boolean extendParents

Specifies if a parent should contain the child bounds after a resize of the child. Default is true.

extendParentsOnAdd

protected boolean extendParentsOnAdd

Specifies if parents should be extended according to the switch if cells are added. Default is true.

resetViewOnRootChange

protected boolean resetViewOnRootChange

Specifies if the scale and translate should be reset if the root changes in the model. Default is true.

resetEdgesOnResize

protected boolean resetEdgesOnResize

Specifies if loops (aka self-references) are allowed. Default is false.

resetEdgesOnMove

protected boolean resetEdgesOnMove

Specifies if edge control points should be reset after the move of a connected cell. Default is false.

resetEdgesOnConnect

protected boolean resetEdgesOnConnect

Specifies if edge control points should be reset after the the edge has been reconnected. Default is true.

allowLoops

protected boolean allowLoops

Specifies if loops (aka self-references) are allowed. Default is false.

multiplicities

protected mxMultiplicity[] multiplicities

Specifies the multiplicities to be used for validation of the graph.

defaultLoopStyle

protected mxEdgeStyle.mxEdgeStyleFunction defaultLoopStyle

Specifies the default style for loops.

multigraph

protected boolean multigraph

Specifies if multiple edges in the same direction between the same pair of vertices are allowed. Default is true.

connectableEdges

protected boolean connectableEdges

Specifies if edges are connectable. Default is false. This overrides the connectable field in edges.

allowDanglingEdges

protected boolean allowDanglingEdges

Specifies if edges with disconnected terminals are allowed in the graph. Default is false.

cloneInvalidEdges

protected boolean cloneInvalidEdges

Specifies if edges that are cloned should be validated and only inserted if they are valid. Default is true.

disconnectOnMove

protected boolean disconnectOnMove

Specifies if edges should be disconnected from their terminals when they are moved. Default is true.

labelsVisible

protected boolean labelsVisible

Specifies if labels should be visible. This is used in getLabel. Default is true.

htmlLabels

protected boolean htmlLabels

Specifies the return value for isHtmlLabel. Default is false.

swimlaneNesting

protected boolean swimlaneNesting

Specifies if nesting of swimlanes is allowed. Default is true.

changesRepaintThreshold

protected int changesRepaintThreshold

Specifies the maximum number of changes that should be processed to find the dirty region. If the number of changes is larger, then the complete grah is repainted. A value of zero will always compute the dirty region for any number of changes. Default is 1000.

autoOrigin

protected boolean autoOrigin

Specifies if the origin should be automatically updated.

origin

protected mxPoint origin

Holds the current automatic origin.

imageBundles

protected static List<mxImageBundle> imageBundles

Holds the list of bundles.

fullRepaintHandler

protected mxEventSource.mxIEventListener fullRepaintHandler

Fires repaint events for full repaints.

updateOriginHandler

protected mxEventSource.mxIEventListener updateOriginHandler

Fires repaint events for full repaints.

graphModelChangeHandler

protected mxEventSource.mxIEventListener graphModelChangeHandler

Fires repaint events for model changes.

Constructor Detail

mxGraph

public mxGraph()

Constructs a new graph with an empty mxGraphModel.

mxGraph

public mxGraph(mxIGraphModel model)

Constructs a new graph for the specified model. If no model is specified, then a new, empty mxGraphModel is used.

Parameters:

model - Model that contains the graph data

mxGraph

public mxGraph(mxStylesheet stylesheet)

Constructs a new graph for the specified model. If no model is specified, then a new, empty mxGraphModel is used.

Parameters:

stylesheet - The stylesheet to use for the graph.

mxGraph

public mxGraph(mxIGraphModel model,
               mxStylesheet stylesheet)

Constructs a new graph for the specified model. If no model is specified, then a new, empty mxGraphModel is used.

Parameters:

model - Model that contains the graph data

Method Detail

createSelectionModel

protected mxGraphSelectionModel createSelectionModel()

Constructs a new selection model to be used in this graph.

createStylesheet

protected mxStylesheet createStylesheet()

Constructs a new stylesheet to be used in this graph.

createGraphView

protected mxGraphView createGraphView()

Constructs a new view to be used in this graph.

getModel

public mxIGraphModel getModel()

Returns the graph model that contains the graph data.

Returns:

Returns the model that contains the graph data

setModel

public void setModel(mxIGraphModel value)

Sets the graph model that contains the data, and fires an mxEvent.CHANGE followed by an mxEvent.REPAINT event.

Parameters:

value - Model that contains the graph data

getView

public mxGraphView getView()

Returns the view that contains the cell states.

Returns:

Returns the view that contains the cell states

setView

public void setView(mxGraphView value)

Sets the view that contains the cell states.

Parameters:

value - View that contains the cell states

getStylesheet

public mxStylesheet getStylesheet()

Returns the stylesheet that provides the style.

Returns:

Returns the stylesheet that provides the style.

setStylesheet

public void setStylesheet(mxStylesheet value)

Sets the stylesheet that provides the style.

Parameters:

value - Stylesheet that provides the style.

getSelectionCellsForChanges

public Object[] getSelectionCellsForChanges(List<mxUndoableEdit.mxUndoableChange> changes)

Returns the cells to be selected for the given list of changes.

graphModelChanged

public mxRectangle graphModelChanged(mxIGraphModel sender,
                                     List<mxUndoableEdit.mxUndoableChange> changes)

Called when the graph model changes. Invokes processChange on each item of the given array to update the view accordingly.

updateOrigin

protected void updateOrigin()

Extends the canvas by doing another validation with a shifted global translation if the bounds of the graph are below (0,0). The first validation is required to compute the bounds of the graph while the second validation is required to apply the new translate.

getRemovedCellsForChanges

public Object[] getRemovedCellsForChanges(List<mxUndoableEdit.mxUndoableChange> changes)

Returns the cells that have been removed from the model.

processChanges

public mxRectangle processChanges(List<mxUndoableEdit.mxUndoableChange> changes,
                                  boolean invalidate,
                                  boolean ignoreDirty)

Processes the changes and returns the minimal rectangle to be repainted in the buffer. A return value of null means no repaint is required.

processChange

public mxRectangle processChange(mxUndoableEdit.mxUndoableChange change,
                                 boolean invalidate,
                                 boolean ignoreDirty)

Processes the given change and invalidates the respective cached data in . This fires a event if the root has changed in the model.

removeStateForCell

protected void removeStateForCell(Object cell)

Removes all cached information for the given cell and its descendants. This is called when a cell was removed from the model.

Parameters:

cell - Cell that was removed from the model.

getCellStyle

public Map<String,Object> getCellStyle(Object cell)

Returns an array of key, value pairs representing the cell style for the given cell. If no string is defined in the model that specifies the style, then the default style for the cell is returned or , if not style can be found.

Parameters:

cell - Cell whose style should be returned.

Returns:

Returns the style of the cell.

postProcessCellStyle

protected Map<String,Object> postProcessCellStyle(Map<String,Object> style)

Tries to resolve the value for the image style in the image bundles and turns short data URIs as defined in mxImageBundle to data URIs as defined in RFC 2397 of the IETF.

setCellStyle

public Object[] setCellStyle(String style)

Sets the style of the selection cells to the given value.

Parameters:

style - String representing the new style of the cells.

setCellStyle

public Object[] setCellStyle(String style,
                             Object[] cells)

Sets the style of the specified cells. If no cells are given, then the selection cells are changed.

Parameters:

style - String representing the new style of the cells.

cells - Optional array of to set the style for. Default is the selection cells.

toggleCellStyle

public Object toggleCellStyle(String key,
                              boolean defaultValue,
                              Object cell)

Toggles the boolean value for the given key in the style of the given cell. If no cell is specified then the selection cell is used.

Parameters:

key - Key for the boolean value to be toggled.

defaultValue - Default boolean value if no value is defined.

cell - Cell whose style should be modified.

toggleCellStyles

public Object[] toggleCellStyles(String key,
                                 boolean defaultValue)

Toggles the boolean value for the given key in the style of the selection cells.

Parameters:

key - Key for the boolean value to be toggled.

defaultValue - Default boolean value if no value is defined.

toggleCellStyles

public Object[] toggleCellStyles(String key,
                                 boolean defaultValue,
                                 Object[] cells)

Toggles the boolean value for the given key in the style of the given cells. If no cells are specified, then the selection cells are used. For example, this can be used to toggle mxConstants.STYLE_ROUNDED or any other style with a boolean value.

Parameters:

key - String representing the key of the boolean style to be toggled.

defaultValue - Default boolean value if no value is defined.

cells - Cells whose styles should be modified.

setCellStyles

public Object[] setCellStyles(String key,
                              String value)

Sets the key to value in the styles of the selection cells.

Parameters:

key - String representing the key to be assigned.

value - String representing the new value for the key.

setCellStyles

public Object[] setCellStyles(String key,
                              String value,
                              Object[] cells)

Sets the key to value in the styles of the given cells. This will modify the existing cell styles in-place and override any existing assignment for the given key. If no cells are specified, then the selection cells are changed. If no value is specified, then the respective key is removed from the styles.

Parameters:

key - String representing the key to be assigned.

value - String representing the new value for the key.

cells - Array of cells to change the style for.

toggleCellStyleFlags

public Object[] toggleCellStyleFlags(String key,
                                     int flag)

Toggles the given bit for the given key in the styles of the selection cells.

Parameters:

key - String representing the key to toggle the flag in.

flag - Integer that represents the bit to be toggled.

toggleCellStyleFlags

public Object[] toggleCellStyleFlags(String key,
                                     int flag,
                                     Object[] cells)

Toggles the given bit for the given key in the styles of the specified cells.

Parameters:

key - String representing the key to toggle the flag in.

flag - Integer that represents the bit to be toggled.

cells - Optional array of to change the style for. Default is the selection cells.

setCellStyleFlags

public Object[] setCellStyleFlags(String key,
                                  int flag,
                                  boolean value)

Sets or toggles the given bit for the given key in the styles of the selection cells.

Parameters:

key - String representing the key to toggle the flag in.

flag - Integer that represents the bit to be toggled.

value - Boolean value to be used or null if the value should be toggled.

setCellStyleFlags

public Object[] setCellStyleFlags(String key,
                                  int flag,
                                  Boolean value,
                                  Object[] cells)

Sets or toggles the given bit for the given key in the styles of the specified cells.

Parameters:

key - String representing the key to toggle the flag in.

flag - Integer that represents the bit to be toggled.

value - Boolean value to be used or null if the value should be toggled.

cells - Optional array of cells to change the style for. If no cells are specified then the selection cells are used.

addImageBundle

public void addImageBundle(mxImageBundle bundle)

Adds the specified bundle.

removeImageBundle

public void removeImageBundle(mxImageBundle bundle)

Removes the specified bundle.

getImageFromBundles

public String getImageFromBundles(String key)

Searches all bundles for the specified key and returns the value for the first match or null if the key is not found.

getImageBundles

public List<mxImageBundle> getImageBundles()

Returns the image bundles

getImageBundles

public void getImageBundles(List<mxImageBundle> value)

Returns the image bundles

alignCells

public Object[] alignCells(String align)

Aligns the selection cells vertically or horizontally according to the given alignment.

Parameters:

align - Specifies the alignment. Possible values are all constants in mxConstants with an ALIGN prefix.

alignCells

public Object[] alignCells(String align,
                           Object[] cells)

Aligns the given cells vertically or horizontally according to the given alignment.

Parameters:

align - Specifies the alignment. Possible values are all constants in mxConstants with an ALIGN prefix.

cells - Array of cells to be aligned.

alignCells

public Object[] alignCells(String align,
                           Object[] cells,
                           Object param)

Aligns the given cells vertically or horizontally according to the given alignment using the optional parameter as the coordinate.

Parameters:

align - Specifies the alignment. Possible values are all constants in mxConstants with an ALIGN prefix.

cells - Array of cells to be aligned.

param - Optional coordinate for the alignment.

flipEdge

public Object flipEdge(Object edge)

Called when the main control point of the edge is double-clicked. This implementation switches between null (default) and alternateEdgeStyle and resets the edges control points. Finally, a flip event is fired before endUpdate is called on the model.

Parameters:

edge - Cell that represents the edge to be flipped.

Returns:

Returns the edge that has been flipped.

orderCells

public Object[] orderCells(boolean back)

Moves the selection cells to the front or back. This is a shortcut method.

Parameters:

back - Specifies if the cells should be moved to back.

orderCells

public Object[] orderCells(boolean back,
                           Object[] cells)

Moves the given cells to the front or back. The change is carried out using cellsOrdered. This method fires mxEvent.ORDER_CELLS while the transaction is in progress.

Parameters:

back - Specifies if the cells should be moved to back.

cells - Array of cells whose order should be changed. If null is specified then the selection cells are used.

cellsOrdered

public void cellsOrdered(Object[] cells,
                         boolean back)

Moves the given cells to the front or back. This method fires mxEvent.CELLS_ORDERED while the transaction is in progress.

Parameters:

cells - Array of cells whose order should be changed.

back - Specifies if the cells should be moved to back.

groupCells

public Object groupCells()

Groups the selection cells. This is a shortcut method.

Returns:

Returns the new group.

groupCells

public Object groupCells(Object group)

Groups the selection cells and adds them to the given group. This is a shortcut method.

Returns:

Returns the new group.

groupCells

public Object groupCells(Object group,
                         double border)

Groups the selection cells and adds them to the given group. This is a shortcut method.

Returns:

Returns the new group.

groupCells

public Object groupCells(Object group,
                         double border,
                         Object[] cells)

Adds the cells into the given group. The change is carried out using cellsAdded, cellsMoved and cellsResized. This method fires mxEvent.GROUP_CELLS while the transaction is in progress. Returns the new group. A group is only created if there is at least one entry in the given array of cells.

Parameters:

group - Cell that represents the target group. If null is specified then a new group is created using createGroupCell.

border - Integer that specifies the border between the child area and the group bounds.

cells - Optional array of cells to be grouped. If null is specified then the selection cells are used.

getCellsForGroup

public Object[] getCellsForGroup(Object[] cells)

Returns the cells with the same parent as the first cell in the given array.

getBoundsForGroup

public mxRectangle getBoundsForGroup(Object group,
                                     Object[] children,
                                     double border)

Returns the bounds to be used for the given group and children. This implementation computes the bounding box of the geometries of all vertices in the given children array. Edges are ignored. If the group cell is a swimlane the title region is added to the bounds.

createGroupCell

public Object createGroupCell(Object[] cells)

Hook for creating the group cell to hold the given array of if no group cell was given to the function. The children are just for informational purpose, they will be added to the returned group later. Note that the returned group should have a geometry. The coordinates of which are later overridden.

Parameters:

cells -

Returns:

Returns a new group cell.

ungroupCells

public Object[] ungroupCells()

Ungroups the selection cells. This is a shortcut method.

ungroupCells

public Object[] ungroupCells(Object[] cells)

Ungroups the given cells by moving the children the children to their parents parent and removing the empty groups.

Parameters:

cells - Array of cells to be ungrouped. If null is specified then the selection cells are used.

Returns:

Returns the children that have been removed from the groups.

removeCellsFromParent

public Object[] removeCellsFromParent()

Removes the selection cells from their parents and adds them to the default parent returned by getDefaultParent.

removeCellsFromParent

public Object[] removeCellsFromParent(Object[] cells)

Removes the specified cells from their parents and adds them to the default parent.

Parameters:

cells - Array of cells to be removed from their parents.

Returns:

Returns the cells that were removed from their parents.

updateGroupBounds

public Object[] updateGroupBounds()

Updates the bounds of the given array of groups so that it includes all child vertices.

updateGroupBounds

public Object[] updateGroupBounds(Object[] cells)

Updates the bounds of the given array of groups so that it includes all child vertices.

Parameters:

cells - The groups whose bounds should be updated.

updateGroupBounds

public Object[] updateGroupBounds(Object[] cells,
                                  int border)

Updates the bounds of the given array of groups so that it includes all child vertices.

Parameters:

cells - The groups whose bounds should be updated.

border - The border to be added in the group.

updateGroupBounds

public Object[] updateGroupBounds(Object[] cells,
                                  int border,
                                  boolean moveParent)

Updates the bounds of the given array of groups so that it includes all child vertices.

Parameters:

cells - The groups whose bounds should be updated.

border - The border to be added in the group.

moveParent - Specifies if the group should be moved.

cloneCells

public Object[] cloneCells(Object[] cells)

Clones all cells in the given array. To clone all children in a cell and add them to another graph: graph2.addCells(graph.cloneCells(new Object[] { parent })); To clone all children in a graph layer if graph g1 and put them into the default parent (typically default layer) of another graph g2, the following code is used: g2.addCells(g1.cloneCells(g1.cloneCells(g1.getChildCells(g1.getDefaultParent()));

cloneCells

public Object[] cloneCells(Object[] cells,
                           boolean allowInvalidEdges)

Returns the clones for the given cells. If the terminal of an edge is not in the given array, then the respective end is assigned a terminal point and the terminal is removed. If a cloned edge is invalid and allowInvalidEdges is false, then a null pointer will be at this position in the returned array. Use getCloneableCells on the input array to only clone the cells where isCellCloneable returns true.

Parameters:

cells - Array of mxCells to be cloned.

Returns:

Returns the clones of the given cells.

insertVertex

public Object insertVertex(Object parent,
                           String id,
                           Object value,
                           double x,
                           double y,
                           double width,
                           double height)

Creates and adds a new vertex with an empty style.

insertVertex

public Object insertVertex(Object parent,
                           String id,
                           Object value,
                           double x,
                           double y,
                           double width,
                           double height,
                           String style)

Adds a new vertex into the given parent using value as the user object and the given coordinates as the geometry of the new vertex. The id and style are used for the respective properties of the new cell, which is returned.

Parameters:

parent - Cell that specifies the parent of the new vertex.

id - Optional string that defines the Id of the new vertex.

value - Object to be used as the user object.

x - Integer that defines the x coordinate of the vertex.

y - Integer that defines the y coordinate of the vertex.

width - Integer that defines the width of the vertex.

height - Integer that defines the height of the vertex.

style - Optional string that defines the cell style.

Returns:

Returns the new vertex that has been inserted.

insertVertex

public Object insertVertex(Object parent,
                           String id,
                           Object value,
                           double x,
                           double y,
                           double width,
                           double height,
                           String style,
                           boolean relative)

Adds a new vertex into the given parent using value as the user object and the given coordinates as the geometry of the new vertex. The id and style are used for the respective properties of the new cell, which is returned.

Parameters:

parent - Cell that specifies the parent of the new vertex.

id - Optional string that defines the Id of the new vertex.

value - Object to be used as the user object.

x - Integer that defines the x coordinate of the vertex.

y - Integer that defines the y coordinate of the vertex.

width - Integer that defines the width of the vertex.

height - Integer that defines the height of the vertex.

style - Optional string that defines the cell style.

relative - Specifies if the geometry should be relative.

Returns:

Returns the new vertex that has been inserted.

createVertex

public Object createVertex(Object parent,
                           String id,
                           Object value,
                           double x,
                           double y,
                           double width,
                           double height,
                           String style)

Hook method that creates the new vertex for insertVertex.

Parameters:

parent - Cell that specifies the parent of the new vertex.

id - Optional string that defines the Id of the new vertex.

value - Object to be used as the user object.

x - Integer that defines the x coordinate of the vertex.

y - Integer that defines the y coordinate of the vertex.

width - Integer that defines the width of the vertex.

height - Integer that defines the height of the vertex.

style - Optional string that defines the cell style.

Returns:

Returns the new vertex to be inserted.

createVertex

public Object createVertex(Object parent,
                           String id,
                           Object value,
                           double x,
                           double y,
                           double width,
                           double height,
                           String style,
                           boolean relative)

Hook method that creates the new vertex for insertVertex.

Parameters:

parent - Cell that specifies the parent of the new vertex.

id - Optional string that defines the Id of the new vertex.

value - Object to be used as the user object.

x - Integer that defines the x coordinate of the vertex.

y - Integer that defines the y coordinate of the vertex.

width - Integer that defines the width of the vertex.

height - Integer that defines the height of the vertex.

style - Optional string that defines the cell style.

relative - Specifies if the geometry should be relative.

Returns:

Returns the new vertex to be inserted.

insertEdge

public Object insertEdge(Object parent,
                         String id,
                         Object value,
                         Object source,
                         Object target)

Creates and adds a new edge with an empty style.

insertEdge

public Object insertEdge(Object parent,
                         String id,
                         Object value,
                         Object source,
                         Object target,
                         String style)

Adds a new edge into the given parent using value as the user object and the given source and target as the terminals of the new edge. The Id and style are used for the respective properties of the new cell, which is returned.

Parameters:

parent - Cell that specifies the parent of the new edge.

id - Optional string that defines the Id of the new edge.

value - Object to be used as the user object.

source - Cell that defines the source of the edge.

target - Cell that defines the target of the edge.

style - Optional string that defines the cell style.

Returns:

Returns the new edge that has been inserted.

createEdge

public Object createEdge(Object parent,
                         String id,
                         Object value,
                         Object source,
                         Object target,
                         String style)

Hook method that creates the new edge for insertEdge. This implementation does not set the source and target of the edge, these are set when the edge is added to the model.

Parameters:

parent - Cell that specifies the parent of the new edge.

id - Optional string that defines the Id of the new edge.

value - Object to be used as the user object.

source - Cell that defines the source of the edge.

target - Cell that defines the target of the edge.

style - Optional string that defines the cell style.

Returns:

Returns the new edge to be inserted.

addEdge

public Object addEdge(Object edge,
                      Object parent,
                      Object source,
                      Object target,
                      Integer index)

Adds the edge to the parent and connects it to the given source and target terminals. This is a shortcut method.

Parameters:

edge - Edge to be inserted into the given parent.

parent - Object that represents the new parent. If no parent is given then the default parent is used.

source - Optional cell that represents the source terminal.

target - Optional cell that represents the target terminal.

index - Optional index to insert the cells at. Default is to append.

Returns:

Returns the edge that was added.

addCell

public Object addCell(Object cell)

Adds the cell to the default parent. This is a shortcut method.

Parameters:

cell - Cell to be inserted.

Returns:

Returns the cell that was added.

addCell

public Object addCell(Object cell,
                      Object parent)

Adds the cell to the parent. This is a shortcut method.

Parameters:

cell - Cell tobe inserted.

parent - Object that represents the new parent. If no parent is given then the default parent is used.

Returns:

Returns the cell that was added.

addCell

public Object addCell(Object cell,
                      Object parent,
                      Integer index,
                      Object source,
                      Object target)

Adds the cell to the parent and connects it to the given source and target terminals. This is a shortcut method.

Parameters:

cell - Cell to be inserted into the given parent.

parent - Object that represents the new parent. If no parent is given then the default parent is used.

index - Optional index to insert the cells at. Default is to append.

source - Optional cell that represents the source terminal.

target - Optional cell that represents the target terminal.

Returns:

Returns the cell that was added.

addCells

public Object[] addCells(Object[] cells)

Adds the cells to the default parent. This is a shortcut method.

Parameters:

cells - Array of cells to be inserted.

Returns:

Returns the cells that were added.

addCells

public Object[] addCells(Object[] cells,
                         Object parent)

Adds the cells to the parent. This is a shortcut method.

Parameters:

cells - Array of cells to be inserted.

parent - Optional cell that represents the new parent. If no parent is specified then the default parent is used.

Returns:

Returns the cells that were added.

addCells

public Object[] addCells(Object[] cells,
                         Object parent,
                         Integer index)

Adds the cells to the parent at the given index. This is a shortcut method.

Parameters:

cells - Array of cells to be inserted.

parent - Optional cell that represents the new parent. If no parent is specified then the default parent is used.

index - Optional index to insert the cells at. Default is to append.

Returns:

Returns the cells that were added.

addCells

public Object[] addCells(Object[] cells,
                         Object parent,
                         Integer index,
                         Object source,
                         Object target)

Adds the cells to the parent at the given index, connecting each cell to the optional source and target terminal. The change is carried out using cellsAdded. This method fires mxEvent.ADD_CELLS while the transaction is in progress.

Parameters:

cells - Array of cells to be added.

parent - Optional cell that represents the new parent. If no parent is specified then the default parent is used.

index - Optional index to insert the cells at. Default is to append.

source - Optional source terminal for all inserted cells.

target - Optional target terminal for all inserted cells.

Returns:

Returns the cells that were added.

cellsAdded

public void cellsAdded(Object[] cells,
                       Object parent,
                       Integer index,
                       Object source,
                       Object target,
                       boolean absolute)

Adds the specified cells to the given parent. This method fires mxEvent.CELLS_ADDED while the transaction is in progress.

cellsAdded

public void cellsAdded(Object[] cells,
                       Object parent,
                       Integer index,
                       Object source,
                       Object target,
                       boolean absolute,
                       boolean constrain)

Adds the specified cells to the given parent. This method fires mxEvent.CELLS_ADDED while the transaction is in progress.

removeCells

public Object[] removeCells()

Removes the selection cells from the graph.

Returns:

Returns the cells that have been removed.

removeCells

public Object[] removeCells(Object[] cells)

Removes the given cells from the graph.

Parameters:

cells - Array of cells to remove.

Returns:

Returns the cells that have been removed.

removeCells

public Object[] removeCells(Object[] cells,
                            boolean includeEdges)

Removes the given cells from the graph including all connected edges if includeEdges is true. The change is carried out using cellsRemoved. This method fires mxEvent.REMOVE_CELLS while the transaction is in progress.

Parameters:

cells - Array of cells to remove. If null is specified then the selection cells which are deletable are used.

includeEdges - Specifies if all connected edges should be removed as well.

cellsRemoved

public void cellsRemoved(Object[] cells)

Removes the given cells from the model. This method fires mxEvent.CELLS_REMOVED while the transaction is in progress.

Parameters:

cells - Array of cells to remove.

splitEdge

public Object splitEdge(Object edge,
                        Object[] cells)

splitEdge

public Object splitEdge(Object edge,
                        Object[] cells,
                        double dx,
                        double dy)

splitEdge

public Object splitEdge(Object edge,
                        Object[] cells,
                        Object newEdge,
                        double dx,
                        double dy)

Splits the given edge by adding a newEdge between the previous source and the given cell and reconnecting the source of the given edge to the given cell. Fires mxEvent.SPLIT_EDGE while the transaction is in progress.

Parameters:

edge - Object that represents the edge to be splitted.

cells - Array that contains the cells to insert into the edge.

newEdge - Object that represents the edge to be inserted.

Returns:

Returns the new edge that has been inserted.

toggleCells

public Object[] toggleCells(boolean show)

Sets the visible state of the selection cells. This is a shortcut method.

Parameters:

show - Boolean that specifies the visible state to be assigned.

Returns:

Returns the cells whose visible state was changed.

toggleCells

public Object[] toggleCells(boolean show,
                            Object[] cells)

Sets the visible state of the specified cells. This is a shortcut method.

Parameters:

show - Boolean that specifies the visible state to be assigned.

cells - Array of cells whose visible state should be changed.

Returns:

Returns the cells whose visible state was changed.

toggleCells

public Object[] toggleCells(boolean show,
                            Object[] cells,
                            boolean includeEdges)

Sets the visible state of the specified cells and all connected edges if includeEdges is true. The change is carried out using cellsToggled. This method fires mxEvent.TOGGLE_CELLS while the transaction is in progress.

Parameters:

show - Boolean that specifies the visible state to be assigned.

cells - Array of cells whose visible state should be changed. If null is specified then the selection cells are used.

Returns:

Returns the cells whose visible state was changed.

cellsToggled

public void cellsToggled(Object[] cells,
                         boolean show)

Sets the visible state of the specified cells.

Parameters:

cells - Array of cells whose visible state should be changed.

show - Boolean that specifies the visible state to be assigned.

foldCells

public Object[] foldCells(boolean collapse)

Sets the collapsed state of the selection cells without recursion. This is a shortcut method.

Parameters:

collapse - Boolean that specifies the collapsed state to be assigned.

Returns:

Returns the cells whose collapsed state was changed.

foldCells

public Object[] foldCells(boolean collapse,
                          boolean recurse)

Sets the collapsed state of the selection cells. This is a shortcut method.

Parameters:

collapse - Boolean that specifies the collapsed state to be assigned.

recurse - Boolean that specifies if the collapsed state should be assigned to all descendants.

Returns:

Returns the cells whose collapsed state was changed.

foldCells

public Object[] foldCells(boolean collapse,
                          boolean recurse,
                          Object[] cells)

Invokes foldCells with checkFoldable set to false.

foldCells

public Object[] foldCells(boolean collapse,
                          boolean recurse,
                          Object[] cells,
                          boolean checkFoldable)

Sets the collapsed state of the specified cells and all descendants if recurse is true. The change is carried out using cellsFolded. This method fires mxEvent.FOLD_CELLS while the transaction is in progress. Returns the cells whose collapsed state was changed.

Parameters:

collapse - Boolean indicating the collapsed state to be assigned.

recurse - Boolean indicating if the collapsed state of all descendants should be set.

cells - Array of cells whose collapsed state should be set. If null is specified then the foldable selection cells are used.

checkFoldable - Boolean indicating of isCellFoldable should be checked. Default is false.

cellsFolded

public void cellsFolded(Object[] cells,
                        boolean collapse,
                        boolean recurse)

Invokes cellsFoldable with checkFoldable set to false.

cellsFolded

public void cellsFolded(Object[] cells,
                        boolean collapse,
                        boolean recurse,
                        boolean checkFoldable)

Sets the collapsed state of the specified cells. This method fires mxEvent.CELLS_FOLDED while the transaction is in progress. Returns the cells whose collapsed state was changed.

Parameters:

cells - Array of cells whose collapsed state should be set.

collapse - Boolean indicating the collapsed state to be assigned.

recurse - Boolean indicating if the collapsed state of all descendants should be set.

checkFoldable - Boolean indicating of isCellFoldable should be checked. Default is false.

swapBounds

public void swapBounds(Object cell,
                       boolean willCollapse)

Swaps the alternate and the actual bounds in the geometry of the given cell invoking updateAlternateBounds before carrying out the swap.

Parameters:

cell - Cell for which the bounds should be swapped.

willCollapse - Boolean indicating if the cell is going to be collapsed.

updateAlternateBounds

public void updateAlternateBounds(Object cell,
                                  mxGeometry geo,
                                  boolean willCollapse)

Updates or sets the alternate bounds in the given geometry for the given cell depending on whether the cell is going to be collapsed. If no alternate bounds are defined in the geometry and collapseToPreferredSize is true, then the preferred size is used for the alternate bounds. The top, left corner is always kept at the same location.

Parameters:

cell - Cell for which the geometry is being udpated.

geo - Geometry for which the alternate bounds should be updated.

willCollapse - Boolean indicating if the cell is going to be collapsed.

addAllEdges

public Object[] addAllEdges(Object[] cells)

Returns an array with the given cells and all edges that are connected to a cell or one of its descendants.

getAllEdges

public Object[] getAllEdges(Object[] cells)

Returns all edges connected to the given cells or their descendants.

updateCellSize

public Object updateCellSize(Object cell)

Updates the size of the given cell in the model using getPreferredSizeForCell to get the new size. This function fires beforeUpdateSize and afterUpdateSize events.

Parameters:

cell - for which the size should be changed.

updateCellSize

public Object updateCellSize(Object cell,
                             boolean ignoreChildren)

Updates the size of the given cell in the model using getPreferredSizeForCell to get the new size. This function fires mxEvent.UPDATE_CELL_SIZE.

Parameters:

cell - Cell for which the size should be changed.

cellSizeUpdated

public void cellSizeUpdated(Object cell,
                            boolean ignoreChildren)

Updates the size of the given cell in the model using getPreferredSizeForCell to get the new size.

Parameters:

cell - Cell for which the size should be changed.

getPreferredSizeForCell

public mxRectangle getPreferredSizeForCell(Object cell)

Returns the preferred width and height of the given as an .

Parameters:

cell - for which the preferred size should be returned.

resizeCell

public Object resizeCell(Object cell,
                         mxRectangle bounds)

Sets the bounds of the given cell using resizeCells. Returns the cell which was passed to the function.

Parameters:

cell - whose bounds should be changed.

bounds - that represents the new bounds.

resizeCells

public Object[] resizeCells(Object[] cells,
                            mxRectangle[] bounds)

Sets the bounds of the given cells and fires a mxEvent.RESIZE_CELLS event. while the transaction is in progress. Returns the cells which have been passed to the function.

Parameters:

cells - Array of cells whose bounds should be changed.

bounds - Array of rectangles that represents the new bounds.

cellsResized

public void cellsResized(Object[] cells,
                         mxRectangle[] bounds)

Sets the bounds of the given cells and fires a event. If extendParents is true, then the parent is extended if a child size is changed so that it overlaps with the parent.

Parameters:

cells - Array of whose bounds should be changed.

bounds - Array of that represents the new bounds.

extendParent

public void extendParent(Object cell)

Resizes the parents recursively so that they contain the complete area of the resized child cell.

Parameters:

cell - that has been resized.

moveCells

public Object[] moveCells(Object[] cells,
                          double dx,
                          double dy)

Moves the cells by the given amount. This is a shortcut method.

moveCells

public Object[] moveCells(Object[] cells,
                          double dx,
                          double dy,
                          boolean clone)

Moves or clones the cells and moves the cells or clones by the given amount. This is a shortcut method.

moveCells

public Object[] moveCells(Object[] cells,
                          double dx,
                          double dy,
                          boolean clone,
                          Object target,
                          Point location)

Moves or clones the specified cells and moves the cells or clones by the given amount, adding them to the optional target cell. The location is the position of the mouse pointer as the mouse was released. The change is carried out using cellsMoved. This method fires mxEvent.MOVE_CELLS while the transaction is in progress.

Parameters:

cells - Array of cells to be moved, cloned or added to the target.

dx - Integer that specifies the x-coordinate of the vector.

dy - Integer that specifies the y-coordinate of the vector.

clone - Boolean indicating if the cells should be cloned.

target - Cell that represents the new parent of the cells.

location - Location where the mouse was released.

Returns:

Returns the cells that were moved.

cellsMoved

public void cellsMoved(Object[] cells,
                       double dx,
                       double dy,
                       boolean disconnect,
                       boolean constrain)

Moves the specified cells by the given vector, disconnecting the cells using disconnectGraph if disconnect is true. This method fires mxEvent.CELLS_MOVED while the transaction is in progress.

translateCell

public void translateCell(Object cell,
                          double dx,
                          double dy)

Translates the geometry of the given cell and stores the new, translated geometry in the model as an atomic change.

getCellContainmentArea

public mxRectangle getCellContainmentArea(Object cell)

Returns the mxRectangle inside which a cell is to be kept.

getMaximumGraphBounds

public mxRectangle getMaximumGraphBounds()

Returns:

the maximumGraphBounds

setMaximumGraphBounds

public void setMaximumGraphBounds(mxRectangle value)

Parameters:

value - the maximumGraphBounds to set

constrainChild

public void constrainChild(Object cell)

Keeps the given cell inside the bounds returned by getCellContainmentArea for its parent, according to the rules defined by getOverlap and isConstrainChild. This modifies the cell's geometry in-place and does not clone it.

Parameters:

cell - Cell which should be constrained.

resetEdges

public void resetEdges(Object[] cells)

Resets the control points of the edges that are connected to the given cells if not both ends of the edge are in the given cells array.

Parameters:

cells - Array of mxCells for which the connected edges should be reset.

resetEdge

public Object resetEdge(Object edge)

Resets the control points of the given edge.

getAllConnectionConstraints

public mxConnectionConstraint[] getAllConnectionConstraints(mxCellState terminal,
                                                            boolean source)

Returns an array of all constraints for the given terminal.

Parameters:

terminal - Cell state that represents the terminal.

source - Specifies if the terminal is the source or target.

getConnectionConstraint

public mxConnectionConstraint getConnectionConstraint(mxCellState edge,
                                                      mxCellState terminal,
                                                      boolean source)

Returns an connection constraint that describes the given connection point. This result can then be passed to getConnectionPoint.

Parameters:

edge - Cell state that represents the edge.

terminal - Cell state that represents the terminal.

source - Boolean indicating if the terminal is the source or target.

setConnectionConstraint

public void setConnectionConstraint(Object edge,
                                    Object terminal,
                                    boolean source,
                                    mxConnectionConstraint constraint)

Sets the connection constraint that describes the given connection point. If no constraint is given then nothing is changed. To remove an existing constraint from the given edge, use an empty constraint instead.

Parameters:

edge - Cell that represents the edge.

terminal - Cell that represents the terminal.

source - Boolean indicating if the terminal is the source or target.

constraint - Optional connection constraint to be used for this connection.

getConnectionPoint

public mxPoint getConnectionPoint(mxCellState vertex,
                                  mxConnectionConstraint constraint)

Sets the connection constraint that describes the given connection point. If no constraint is given then nothing is changed. To remove an existing constraint from the given edge, use an empty constraint instead.

Parameters:

vertex - Cell state that represents the vertex.

constraint - Connection constraint that represents the connection point constraint as returned by getConnectionConstraint.

connectCell

public Object connectCell(Object edge,
                          Object terminal,
                          boolean source)

Connects the specified end of the given edge to the given terminal using cellConnected and fires mxEvent.CONNECT_CELL while the transaction is in progress.

connectCell

public Object connectCell(Object edge,
                          Object terminal,
                          boolean source,
                          mxConnectionConstraint constraint)

Connects the specified end of the given edge to the given terminal using cellConnected and fires mxEvent.CONNECT_CELL while the transaction is in progress.

Parameters:

edge - Edge whose terminal should be updated.

terminal - New terminal to be used.

source - Specifies if the new terminal is the source or target.

constraint - Optional constraint to be used for this connection.

Returns:

Returns the update edge.

cellConnected

public void cellConnected(Object edge,
                          Object terminal,
                          boolean source,
                          mxConnectionConstraint constraint)

Sets the new terminal for the given edge and resets the edge points if isResetEdgesOnConnect returns true. This method fires while the transaction is in progress.

Parameters:

edge - Edge whose terminal should be updated.

terminal - New terminal to be used.

source - Specifies if the new terminal is the source or target.

constraint - Constraint to be used for this connection.

disconnectGraph

public void disconnectGraph(Object[] cells)

Disconnects the given edges from the terminals which are not in the given array.

Parameters:

cells - Array of to be disconnected.

getCurrentRoot

public Object getCurrentRoot()

Returns the current root of the displayed cell hierarchy. This is a shortcut to in .

Returns:

Returns the current root in the view.

getTranslateForRoot

public mxPoint getTranslateForRoot(Object cell)

Returns the translation to be used if the given cell is the root cell as an . This implementation returns null.

Parameters:

cell - Cell that represents the root of the view.

Returns:

Returns the translation of the graph for the given root cell.

isPort

public boolean isPort(Object cell)

Returns true if the given cell is a "port", that is, when connecting to it, the cell returned by getTerminalForPort should be used as the terminal and the port should be referenced by the ID in either the mxConstants.STYLE_SOURCE_PORT or the or the mxConstants.STYLE_TARGET_PORT. Note that a port should not be movable. This implementation always returns false. A typical implementation of this method looks as follows: public boolean isPort(Object cell) { mxGeometry geo = getCellGeometry(cell); return (geo != null) ? geo.isRelative() : false; }

Parameters:

cell - Cell that represents the port.

Returns:

Returns true if the cell is a port.

getTerminalForPort

public Object getTerminalForPort(Object cell,
                                 boolean source)

Returns the terminal to be used for a given port. This implementation always returns the parent cell.

Parameters:

cell - Cell that represents the port.

source - If the cell is the source or target port.

Returns:

Returns the terminal to be used for the given port.

getChildOffsetForCell

public mxPoint getChildOffsetForCell(Object cell)

Returns the offset to be used for the cells inside the given cell. The root and layer cells may be identified using mxGraphModel.isRoot and mxGraphModel.isLayer. This implementation returns null.

Parameters:

cell - Cell whose offset should be returned.

Returns:

Returns the child offset for the given cell.

enterGroup

public void enterGroup()

enterGroup

public void enterGroup(Object cell)

Uses the given cell as the root of the displayed cell hierarchy. If no cell is specified then the selection cell is used. The cell is only used if returns true.

Parameters:

cell -

exitGroup

public void exitGroup()

Changes the current root to the next valid root in the displayed cell hierarchy.

home

public void home()

Uses the root of the model as the root of the displayed cell hierarchy and selects the previous root.

isValidRoot

public boolean isValidRoot(Object cell)

Returns true if the given cell is a valid root for the cell display hierarchy. This implementation returns true for all non-null values.

Parameters:

cell - which should be checked as a possible root.

Returns:

Returns true if the given cell is a valid root.

getGraphBounds

public mxRectangle getGraphBounds()

Returns the bounds of the visible graph.

getCellBounds

public mxRectangle getCellBounds(Object cell)

Returns the bounds of the given cell.

getCellBounds

public mxRectangle getCellBounds(Object cell,
                                 boolean includeEdges)

Returns the bounds of the given cell including all connected edges if includeEdge is true.

getCellBounds

public mxRectangle getCellBounds(Object cell,
                                 boolean includeEdges,
                                 boolean includeDescendants)

Returns the bounds of the given cell including all connected edges if includeEdge is true.

getBoundingBoxFromGeometry

public mxRectangle getBoundingBoxFromGeometry(Object[] cells)

Returns the bounding box for the geometries of the vertices in the given array of cells.

getBoundingBox

public mxRectangle getBoundingBox(Object cell)

Returns the bounds of the given cell.

getBoundingBox

public mxRectangle getBoundingBox(Object cell,
                                  boolean includeEdges)

Returns the bounding box of the given cell including all connected edges if includeEdge is true.

getBoundingBox

public mxRectangle getBoundingBox(Object cell,
                                  boolean includeEdges,
                                  boolean includeDescendants)

Returns the bounding box of the given cell including all connected edges if includeEdge is true.

getPaintBounds

public mxRectangle getPaintBounds(Object[] cells)

Returns the bounding box of the given cells and their descendants.

getBoundsForCells

public mxRectangle getBoundsForCells(Object[] cells,
                                     boolean includeEdges,
                                     boolean includeDescendants,
                                     boolean boundingBox)

Returns the bounds for the given cells.

getCellBounds

public mxRectangle getCellBounds(Object cell,
                                 boolean includeEdges,
                                 boolean includeDescendants,
                                 boolean boundingBox)

Returns the bounds of the given cell including all connected edges if includeEdge is true.

refresh

public void refresh()

Clears all cell states or the states for the hierarchy starting at the given cell and validates the graph.

repaint

public void repaint()

Fires a repaint event.

repaint

public void repaint(mxRectangle region)

Fires a repaint event. The optional region is the rectangle that needs to be repainted.

snap

public double snap(double value)

Snaps the given numeric value to the grid if is true.

Parameters:

value - Numeric value to be snapped to the grid.

Returns:

Returns the value aligned to the grid.

getCellGeometry

public mxGeometry getCellGeometry(Object cell)

Returns the geometry for the given cell.

Parameters:

cell - Cell whose geometry should be returned.

Returns:

Returns the geometry of the cell.

isCellVisible

public boolean isCellVisible(Object cell)

Returns true if the given cell is visible in this graph. This implementation uses . Subclassers can override this to implement specific visibility for cells in only one graph, that is, without affecting the visible state of the cell. When using dynamic filter expressions for cell visibility, then the graph should be revalidated after the filter expression has changed.

Parameters:

cell - Cell whose visible state should be returned.

Returns:

Returns the visible state of the cell.

isCellCollapsed

public boolean isCellCollapsed(Object cell)

Returns true if the given cell is collapsed in this graph. This implementation uses . Subclassers can override this to implement specific collapsed states for cells in only one graph, that is, without affecting the collapsed state of the cell. When using dynamic filter expressions for the collapsed state, then the graph should be revalidated after the filter expression has changed.

Parameters:

cell - Cell whose collapsed state should be returned.

Returns:

Returns the collapsed state of the cell.

isCellConnectable

public boolean isCellConnectable(Object cell)

Returns true if the given cell is connectable in this graph. This implementation uses . Subclassers can override this to implement specific connectable states for cells in only one graph, that is, without affecting the connectable state of the cell in the model.

Parameters:

cell - Cell whose connectable state should be returned.

Returns:

Returns the connectable state of the cell.

isOrthogonal

public boolean isOrthogonal(mxCellState edge)

Returns true if perimeter points should be computed such that the resulting edge has only horizontal or vertical segments.

Parameters:

edge - Cell state that represents the edge.

isLoop

public boolean isLoop(mxCellState state)

Returns true if the given cell state is a loop.

Parameters:

state - that represents a potential loop.

Returns:

Returns true if the given cell is a loop.

setMultiplicities

public void setMultiplicities(mxMultiplicity[] value)

getMultiplicities

public mxMultiplicity[] getMultiplicities()

isEdgeValid

public boolean isEdgeValid(Object edge,
                           Object source,
                           Object target)

Checks if the return value of getEdgeValidationError for the given arguments is null.

Parameters:

edge - Cell that represents the edge to validate.

source - Cell that represents the source terminal.

target - Cell that represents the target terminal.

getEdgeValidationError

public String getEdgeValidationError(Object edge,
                                     Object source,
                                     Object target)

Returns the validation error message to be displayed when inserting or changing an edges' connectivity. A return value of null means the edge is valid, a return value of '' means it's not valid, but do not display an error message. Any other (non-empty) string returned from this method is displayed as an error message when trying to connect an edge to a source and target. This implementation uses the multiplicities, as well as multigraph and allowDanglingEdges to generate validation errors.

Parameters:

edge - Cell that represents the edge to validate.

source - Cell that represents the source terminal.

target - Cell that represents the target terminal.

validateEdge

public String validateEdge(Object edge,
                           Object source,
                           Object target)

Hook method for subclassers to return an error message for the given edge and terminals. This implementation returns null.

Parameters:

edge - Cell that represents the edge to validate.

source - Cell that represents the source terminal.

target - Cell that represents the target terminal.

getCellValidationError

public String getCellValidationError(Object cell)

Checks all multiplicities that cannot be enforced while the graph is being modified, namely, all multiplicities that require a minimum of 1 edge.

Parameters:

cell - Cell for which the multiplicities should be checked.

validateCell

public String validateCell(Object cell,
                           Hashtable<Object,Object> context)

Hook method for subclassers to return an error message for the given cell and validation context. This implementation returns null.

Parameters:

cell - Cell that represents the cell to validate.

context - Hashtable that represents the global validation state.

isLabelsVisible

public boolean isLabelsVisible()

Returns:

the labelsVisible

setLabelsVisible

public void setLabelsVisible(boolean value)

Parameters:

value - the labelsVisible to set

setHtmlLabels

public void setHtmlLabels(boolean value)

Parameters:

value - the htmlLabels to set

isHtmlLabels

public boolean isHtmlLabels()

convertValueToString

public String convertValueToString(Object cell)

Returns the textual representation for the given cell.

Parameters:

cell - Cell to be converted to a string.

Returns:

Returns the textual representation of the cell.

getLabel

public String getLabel(Object cell)

Returns a string or DOM node that represents the label for the given cell. This implementation uses if is true. Otherwise it returns an empty string.

Parameters:

cell - whose label should be returned.

Returns:

Returns the label for the given cell.

cellLabelChanged

public void cellLabelChanged(Object cell,
                             Object value,
                             boolean autoSize)

Sets the new label for a cell. If autoSize is true then will be called.

Parameters:

cell - Cell whose label should be changed.

value - New label to be assigned.

autoSize - Specifies if cellSizeUpdated should be called.

isHtmlLabel

public boolean isHtmlLabel(Object cell)

Returns true if the label must be rendered as HTML markup. The default implementation returns .

Parameters:

cell - whose label should be displayed as HTML markup.

Returns:

Returns true if the given cell label is HTML markup.

getToolTipForCell

public String getToolTipForCell(Object cell)

Returns the tooltip to be used for the given cell.

getStartSize

public mxRectangle getStartSize(Object swimlane)

Returns the start size of the given swimlane, that is, the width or height of the part that contains the title, depending on the horizontal style. The return value is an with either width or height set as appropriate.

Parameters:

swimlane - whose start size should be returned.

Returns:

Returns the startsize for the given swimlane.

getImage

public String getImage(mxCellState state)

Returns the image URL for the given cell state. This implementation returns the value stored under in the cell style.

Parameters:

state -

Returns:

Returns the image associated with the given cell state.

getBorder

public int getBorder()

Returns the value of .

Returns:

Returns the border.

setBorder

public void setBorder(int value)

Sets the value of .

Parameters:

value - Positive integer that represents the border to be used.

getDefaultLoopStyle

public mxEdgeStyle.mxEdgeStyleFunction getDefaultLoopStyle()

Returns the default edge style used for loops.

Returns:

Returns the default loop style.

setDefaultLoopStyle

public void setDefaultLoopStyle(mxEdgeStyle.mxEdgeStyleFunction value)

Sets the default style used for loops.

Parameters:

value - Default style to be used for loops.

isSwimlane

public boolean isSwimlane(Object cell)

Returns true if the given cell is a swimlane. This implementation always returns false.

Parameters:

cell - Cell that should be checked.

Returns:

Returns true if the cell is a swimlane.

isCellLocked

public boolean isCellLocked(Object cell)

Returns true if the given cell may not be moved, sized, bended, disconnected, edited or selected. This implementation returns true for all vertices with a relative geometry if cellsLocked is false.

Parameters:

cell - Cell whose locked state should be returned.

Returns:

Returns true if the given cell is locked.

isCellsLocked

public boolean isCellsLocked()

Returns cellsLocked, the default return value for isCellLocked.

setCellsLocked

public void setCellsLocked(boolean value)

Sets cellsLocked, the default return value for isCellLocked and fires a property change event for cellsLocked.

isCellEditable

public boolean isCellEditable(Object cell)

Returns true if the given cell is movable. This implementation returns editable.

Parameters:

cell - Cell whose editable state should be returned.

Returns:

Returns true if the cell is editable.

isCellsEditable

public boolean isCellsEditable()

Returns true if editing is allowed in this graph.

Returns:

Returns true if the graph is editable.

setCellsEditable

public void setCellsEditable(boolean value)

Sets if the graph is editable.

isCellResizable

public boolean isCellResizable(Object cell)

Returns true if the given cell is resizable. This implementation returns cellsSizable for all cells.

Parameters:

cell - Cell whose resizable state should be returned.

Returns:

Returns true if the cell is sizable.

isCellsResizable

public boolean isCellsResizable()

Returns true if the given cell is resizable. This implementation return sizable.

setCellsResizable

public void setCellsResizable(boolean value)

Sets if the graph is resizable.

getMovableCells

public Object[] getMovableCells(Object[] cells)

Returns the cells which are movable in the given array of cells.

isCellMovable

public boolean isCellMovable(Object cell)

Returns true if the given cell is movable. This implementation returns movable.

Parameters:

cell - Cell whose movable state should be returned.

Returns:

Returns true if the cell is movable.

isCellsMovable

public boolean isCellsMovable()

Returns cellsMovable.

setCellsMovable

public void setCellsMovable(boolean value)

Sets cellsMovable.

isTerminalPointMovable

public boolean isTerminalPointMovable(Object cell,
                                      boolean source)

Function: isTerminalPointMovable Returns true if the given terminal point is movable. This is independent from isCellConnectable and isCellDisconnectable and controls if terminal points can be moved in the graph if the edge is not connected. Note that it is required for this to return true to connect unconnected edges. This implementation returns true.

Parameters:

cell - Cell whose terminal point should be moved.

source - Boolean indicating if the source or target terminal should be moved.

isCellBendable

public boolean isCellBendable(Object cell)

Returns true if the given cell is bendable. This implementation returns bendable. This is used in mxElbowEdgeHandler to determine if the middle handle should be shown.

Parameters:

cell - Cell whose bendable state should be returned.

Returns:

Returns true if the cell is bendable.

isCellsBendable

public boolean isCellsBendable()

Returns cellsBendable.

setCellsBendable

public void setCellsBendable(boolean value)

Sets cellsBendable.

isCellSelectable

public boolean isCellSelectable(Object cell)

Returns true if the given cell is selectable. This implementation returns .

Parameters:

cell - whose selectable state should be returned.

Returns:

Returns true if the given cell is selectable.

isCellsSelectable

public boolean isCellsSelectable()

Returns cellsSelectable.

setCellsSelectable

public void setCellsSelectable(boolean value)

Sets cellsSelectable.

getDeletableCells

public Object[] getDeletableCells(Object[] cells)

Returns the cells which are movable in the given array of cells.

isCellDeletable

public boolean isCellDeletable(Object cell)

Returns true if the given cell is movable. This implementation always returns true.

Parameters:

cell - Cell whose movable state should be returned.

Returns:

Returns true if the cell is movable.

isCellsDeletable

public boolean isCellsDeletable()

Returns cellsDeletable.

setCellsDeletable

public void setCellsDeletable(boolean value)

Sets cellsDeletable.

getCloneableCells

public Object[] getCloneableCells(Object[] cells)

Returns the cells which are movable in the given array of cells.

isCellCloneable

public boolean isCellCloneable(Object cell)

Returns the constant true. This does not use the cloneable field to return a value for a given cell, it is simply a hook for subclassers to disallow cloning of individual cells.

isCellsCloneable

public boolean isCellsCloneable()

Returns cellsCloneable.

setCellsCloneable

public void setCellsCloneable(boolean value)

Specifies if the graph should allow cloning of cells by holding down the control key while cells are being moved. This implementation updates cellsCloneable.

Parameters:

value - Boolean indicating if the graph should be cloneable.

isCellDisconnectable

public boolean isCellDisconnectable(Object cell,
                                    Object terminal,
                                    boolean source)

Returns true if the given cell is disconnectable from the source or target terminal. This returns for all given cells if does not return true for the given cell.

Parameters:

cell - whose disconnectable state should be returned.

terminal - that represents the source or target terminal.

source - Boolean indicating if the source or target terminal is to be disconnected.

Returns:

Returns true if the given edge can be disconnected from the given terminal.

isCellsDisconnectable

public boolean isCellsDisconnectable()

Returns cellsDisconnectable.

setCellsDisconnectable

public void setCellsDisconnectable(boolean value)

Sets cellsDisconnectable.

Parameters:

value - Boolean indicating if the graph should allow disconnecting of edges.

isLabelClipped

public boolean isLabelClipped(Object cell)

Returns true if the overflow portion of labels should be hidden. If this returns true then vertex labels will be clipped to the size of the vertices. This implementation returns true if in the style of the given cell is "hidden".

Parameters:

cell - Cell whose label should be clipped.

Returns:

Returns true if the cell label should be clipped.

isLabelsClipped

public boolean isLabelsClipped()

Returns labelsClipped.

setLabelsClipped

public void setLabelsClipped(boolean value)

Sets labelsClipped.

isLabelMovable

public boolean isLabelMovable(Object cell)

Returns true if the given edges's label is moveable. This returns for all given cells if does not return true for the given cell.

Parameters:

cell - whose label should be moved.

Returns:

Returns true if the label of the given cell is movable.

isVertexLabelsMovable

public boolean isVertexLabelsMovable()

Returns vertexLabelsMovable.

setVertexLabelsMovable

public void setVertexLabelsMovable(boolean value)

Sets vertexLabelsMovable.

isEdgeLabelsMovable

public boolean isEdgeLabelsMovable()

Returns edgeLabelsMovable.

setEdgeLabelsMovable

public void setEdgeLabelsMovable(boolean value)

Returns edgeLabelsMovable.

isEnabled

public boolean isEnabled()

Returns true if the graph is .

Returns:

Returns true if the graph is enabled.

setEnabled

public void setEnabled(boolean value)

Specifies if the graph should allow any interactions. This implementation updates .

Parameters:

value - Boolean indicating if the graph should be enabled.

isDropEnabled

public boolean isDropEnabled()

Returns true if the graph allows drop into other cells.

setDropEnabled

public void setDropEnabled(boolean value)

Sets dropEnabled.

isSplitEnabled

public boolean isSplitEnabled()

Affects the return values of isValidDropTarget to allow for edges as drop targets. The splitEdge method is called in mxGraphHandler if mxGraphComponent.isSplitEvent returns true for a given configuration.

setSplitEnabled

public void setSplitEnabled(boolean value)

Sets splitEnabled.

isMultigraph

public boolean isMultigraph()

Returns multigraph.

setMultigraph

public void setMultigraph(boolean value)

Sets multigraph.

isSwimlaneNesting

public boolean isSwimlaneNesting()

Returns swimlaneNesting.

setSwimlaneNesting

public void setSwimlaneNesting(boolean value)

Sets swimlaneNesting.

isAllowDanglingEdges

public boolean isAllowDanglingEdges()

Returns allowDanglingEdges

setAllowDanglingEdges

public void setAllowDanglingEdges(boolean value)

Sets allowDanglingEdges.

isCloneInvalidEdges

public boolean isCloneInvalidEdges()

Returns cloneInvalidEdges.

setCloneInvalidEdges

public void setCloneInvalidEdges(boolean value)

Sets cloneInvalidEdge.

isDisconnectOnMove

public boolean isDisconnectOnMove()

Returns disconnectOnMove

setDisconnectOnMove

public void setDisconnectOnMove(boolean value)

Sets disconnectOnMove.

isAllowLoops

public boolean isAllowLoops()

Returns allowLoops.

setAllowLoops

public void setAllowLoops(boolean value)

Sets allowLoops.

isConnectableEdges

public boolean isConnectableEdges()

Returns connectableEdges.

setConnectableEdges

public void setConnectableEdges(boolean value)

Sets connetableEdges.

isResetEdgesOnMove

public boolean isResetEdgesOnMove()

Returns resetEdgesOnMove.

setResetEdgesOnMove

public void setResetEdgesOnMove(boolean value)

Sets resetEdgesOnMove.

isResetViewOnRootChange

public boolean isResetViewOnRootChange()

Returns resetViewOnRootChange.

setResetViewOnRootChange

public void setResetViewOnRootChange(boolean value)

Sets resetEdgesOnResize.

isResetEdgesOnResize

public boolean isResetEdgesOnResize()

Returns resetEdgesOnResize.

setResetEdgesOnResize

public void setResetEdgesOnResize(boolean value)

Sets resetEdgesOnResize.

isResetEdgesOnConnect

public boolean isResetEdgesOnConnect()

Returns resetEdgesOnConnect.

setResetEdgesOnConnect

public void setResetEdgesOnConnect(boolean value)

Sets resetEdgesOnConnect.

isAutoSizeCell

public boolean isAutoSizeCell(Object cell)

Returns true if the size of the given cell should automatically be updated after a change of the label. This implementation returns autoSize for all given cells or checks if the cell style does specify mxConstants.STYLE_AUTOSIZE to be 1.

Parameters:

cell - Cell that should be resized.

Returns:

Returns true if the size of the given cell should be updated.

isAutoSizeCells

public boolean isAutoSizeCells()

Returns true if the size of the given cell should automatically be updated after a change of the label. This implementation returns autoSize for all given cells.

setAutoSizeCells

public void setAutoSizeCells(boolean value)

Specifies if cell sizes should be automatically updated after a label change. This implementation sets autoSize to the given parameter.

Parameters:

value - Boolean indicating if cells should be resized automatically.

isExtendParent

public boolean isExtendParent(Object cell)

Returns true if the parent of the given cell should be extended if the child has been resized so that it overlaps the parent. This implementation returns ExtendParents if cell is not an edge.

Parameters:

cell - Cell that has been resized.

isExtendParents

public boolean isExtendParents()

Returns extendParents.

setExtendParents

public void setExtendParents(boolean value)

Sets extendParents.

isExtendParentsOnAdd

public boolean isExtendParentsOnAdd()

Returns extendParentsOnAdd.

setExtendParentsOnAdd

public void setExtendParentsOnAdd(boolean value)

Sets extendParentsOnAdd.

isConstrainChild

public boolean isConstrainChild(Object cell)

Returns true if the given cell should be kept inside the bounds of its parent according to the rules defined by getOverlap and isAllowOverlapParent. This implementation returns false for all children of edges and isConstrainChildren() otherwise.

isConstrainChildren

public boolean isConstrainChildren()

Returns constrainChildren.

Returns:

the keepInsideParentOnMove

setConstrainChildren

public void setConstrainChildren(boolean value)

Parameters:

value - the constrainChildren to set

isAutoOrigin

public boolean isAutoOrigin()

Returns autoOrigin.

setAutoOrigin

public void setAutoOrigin(boolean value)

Parameters:

value - the autoOrigin to set

getOrigin

public mxPoint getOrigin()

Returns origin.

setOrigin

public void setOrigin(mxPoint value)

Parameters:

value - the origin to set

getChangesRepaintThreshold

public int getChangesRepaintThreshold()

Returns:

Returns changesRepaintThreshold.

setChangesRepaintThreshold

public void setChangesRepaintThreshold(int value)

Parameters:

value - the changesRepaintThreshold to set

isAllowNegativeCoordinates

public boolean isAllowNegativeCoordinates()

Returns isAllowNegativeCoordinates.

Returns:

the allowNegativeCoordinates

setAllowNegativeCoordinates

public void setAllowNegativeCoordinates(boolean value)

Parameters:

value - the allowNegativeCoordinates to set

isCollapseToPreferredSize

public boolean isCollapseToPreferredSize()

Returns collapseToPreferredSize.

Returns:

the collapseToPreferredSize

setCollapseToPreferredSize

public void setCollapseToPreferredSize(boolean value)

Parameters:

value - the collapseToPreferredSize to set

isKeepEdgesInForeground

public boolean isKeepEdgesInForeground()

Returns:

Returns true if edges are rendered in the foreground.

setKeepEdgesInForeground

public void setKeepEdgesInForeground(boolean value)

Parameters:

value - the keepEdgesInForeground to set

isKeepEdgesInBackground

public boolean isKeepEdgesInBackground()

Returns:

Returns true if edges are rendered in the background.

setKeepEdgesInBackground

public void setKeepEdgesInBackground(boolean value)

Parameters:

value - the keepEdgesInBackground to set

isValidSource

public boolean isValidSource(Object cell)

Returns true if the given cell is a valid source for new connections. This implementation returns true for all non-null values and is called by is called by .

Parameters:

cell - Object that represents a possible source or null.

Returns:

Returns true if the given cell is a valid source terminal.

isValidTarget

public boolean isValidTarget(Object cell)

Returns isValidSource for the given cell. This is called by isValidConnection.

Parameters:

cell - Object that represents a possible target or null.

Returns:

Returns true if the given cell is a valid target.

isValidConnection

public boolean isValidConnection(Object source,
                                 Object target)

Returns true if the given target cell is a valid target for source. This is a boolean implementation for not allowing connections between certain pairs of vertices and is called by . This implementation returns true if returns true for the source and returns true for the target.

Parameters:

source - Object that represents the source cell.

target - Object that represents the target cell.

Returns:

Returns true if the the connection between the given terminals is valid.

getMinimumGraphSize

public mxRectangle getMinimumGraphSize()

Returns the minimum size of the diagram.

Returns:

Returns the minimum container size.

setMinimumGraphSize

public void setMinimumGraphSize(mxRectangle value)

Parameters:

value - the minimumGraphSize to set

getOverlap

public double getOverlap(Object cell)

Returns a decimal number representing the amount of the width and height of the given cell that is allowed to overlap its parent. A value of 0 means all children must stay inside the parent, 1 means the child is allowed to be placed outside of the parent such that it touches one of the parents sides. If returns false for the given cell, then this method returns 0.

Parameters:

cell -

Returns:

Returns the overlapping value for the given cell inside its parent.

getDefaultOverlap

public double getDefaultOverlap()

Gets defaultOverlap.

setDefaultOverlap

public void setDefaultOverlap(double value)

Sets defaultOverlap.

isAllowOverlapParent

public boolean isAllowOverlapParent(Object cell)

Returns true if the given cell is allowed to be placed outside of the parents area.

Parameters:

cell -

Returns:

Returns true if the given cell may overlap its parent.

getFoldableCells

public Object[] getFoldableCells(Object[] cells,
                                 boolean collapse)

Returns the cells which are movable in the given array of cells.

isCellFoldable

public boolean isCellFoldable(Object cell,
                              boolean collapse)

Returns true if the given cell is expandable. This implementation returns true if the cell has at least one child and its style does not specify mxConstants.STYLE_FOLDABLE to be 0.

Parameters:

cell - whose expandable state should be returned.

Returns:

Returns true if the given cell is expandable.

isGridEnabled

public boolean isGridEnabled()

Returns true if the grid is enabled.

Returns:

Returns the enabled state of the grid.

setGridEnabled

public void setGridEnabled(boolean value)

Sets if the grid is enabled.

Parameters:

value - Specifies if the grid should be enabled.

isPortsEnabled

public boolean isPortsEnabled()

Returns true if ports are enabled.

Returns:

Returns the enabled state of the ports.

setPortsEnabled

public void setPortsEnabled(boolean value)

Sets if ports are enabled.

Parameters:

value - Specifies if the ports should be enabled.

getGridSize

public int getGridSize()

Returns the grid size.

Returns:

Returns the grid size

setGridSize

public void setGridSize(int value)

Sets the grid size and fires a property change event for gridSize.

Parameters:

value - New grid size to be used.

getAlternateEdgeStyle

public String getAlternateEdgeStyle()

Returns alternateEdgeStyle.

setAlternateEdgeStyle

public void setAlternateEdgeStyle(String value)

Sets alternateEdgeStyle.

isValidDropTarget

public boolean isValidDropTarget(Object cell,
                                 Object[] cells)

Returns true if the given cell is a valid drop target for the specified cells. This returns true if the cell is a swimlane, has children and is not collapsed, or if splitEnabled is true and isSplitTarget returns true for the given arguments

Parameters:

cell - Object that represents the possible drop target.

cells - Objects that are going to be dropped.

Returns:

Returns true if the cell is a valid drop target for the given cells.

isSplitTarget

public boolean isSplitTarget(Object target,
                             Object[] cells)

Returns true if split is enabled and the given edge may be splitted into two edges with the given cell as a new terminal between the two.

Parameters:

target - Object that represents the edge to be splitted.

cells - Array of cells to add into the given edge.

Returns:

Returns true if the given edge may be splitted by the given cell.

getDropTarget

public Object getDropTarget(Object[] cells,
                            Point pt,
                            Object cell)

Returns the given cell if it is a drop target for the given cells or the nearest ancestor that may be used as a drop target for the given cells. If the given array contains a swimlane and swimlaneNesting is false then this always returns null. If no cell is given, then the bottommost swimlane at the location of the given event is returned. This function should only be used if isDropEnabled returns true.

getDefaultParent

public Object getDefaultParent()

Returns the first child of the root in the model, that is, the first or default layer of the diagram.

Returns:

Returns the default parent for new cells.

setDefaultParent

public void setDefaultParent(Object value)

Sets the default parent to be returned by getDefaultParent. Set this to null to return the first child of the root in getDefaultParent.

getChildVertices

public Object[] getChildVertices(Object parent)

Returns the visible child vertices of the given parent.

Parameters:

parent - Cell whose children should be returned.

getChildEdges

public Object[] getChildEdges(Object parent)

Returns the visible child edges of the given parent.

Parameters:

parent - Cell whose children should be returned.

getChildCells

public Object[] getChildCells(Object parent)

Returns the visible children of the given parent.

Parameters:

parent - Cell whose children should be returned.

getChildCells

public Object[] getChildCells(Object parent,
                              boolean vertices,
                              boolean edges)

Returns the visible child vertices or edges in the given parent. If vertices and edges is false, then all children are returned.

Parameters:

parent - Cell whose children should be returned.

vertices - Specifies if child vertices should be returned.

edges - Specifies if child edges should be returned.

Returns:

Returns the child vertices and edges.

getConnections

public Object[] getConnections(Object cell)

Returns all visible edges connected to the given cell without loops.

Parameters:

cell - Cell whose connections should be returned.

Returns:

Returns the connected edges for the given cell.

getConnections

public Object[] getConnections(Object cell,
                               Object parent)

Returns all visible edges connected to the given cell without loops. If the optional parent argument is specified, then only child edges of the given parent are returned.

Parameters:

cell - Cell whose connections should be returned.

parent - Optional parent of the opposite end for a connection to be returned.

Returns:

Returns the connected edges for the given cell.

getConnections

public Object[] getConnections(Object cell,
                               Object parent,
                               boolean recurse)

Returns all visible edges connected to the given cell without loops. If the optional parent argument is specified, then only child edges of the given parent are returned.

Parameters:

cell - Cell whose connections should be returned.

parent - Optional parent of the opposite end for a connection to be returned.

Returns:

Returns the connected edges for the given cell.

getIncomingEdges

public Object[] getIncomingEdges(Object cell)

Returns all incoming visible edges connected to the given cell without loops.

Parameters:

cell - Cell whose incoming edges should be returned.

Returns:

Returns the incoming edges of the given cell.

getIncomingEdges

public Object[] getIncomingEdges(Object cell,
                                 Object parent)

Returns the visible incoming edges for the given cell. If the optional parent argument is specified, then only child edges of the given parent are returned.

Parameters:

cell - Cell whose incoming edges should be returned.

parent - Optional parent of the opposite end for an edge to be returned.

Returns:

Returns the incoming edges of the given cell.

getOutgoingEdges

public Object[] getOutgoingEdges(Object cell)

Returns all outgoing visible edges connected to the given cell without loops.

Parameters:

cell - Cell whose outgoing edges should be returned.

Returns:

Returns the outgoing edges of the given cell.

getOutgoingEdges

public Object[] getOutgoingEdges(Object cell,
                                 Object parent)

Returns the visible outgoing edges for the given cell. If the optional parent argument is specified, then only child edges of the given parent are returned.

Parameters:

cell - Cell whose outgoing edges should be returned.

parent - Optional parent of the opposite end for an edge to be returned.

Returns:

Returns the outgoing edges of the given cell.

getEdges

public Object[] getEdges(Object cell)

Returns all visible edges connected to the given cell including loops.

Parameters:

cell - Cell whose edges should be returned.

Returns:

Returns the edges of the given cell.

getEdges

public Object[] getEdges(Object cell,
                         Object parent)

Returns all visible edges connected to the given cell including loops.

Parameters:

cell - Cell whose edges should be returned.

parent - Optional parent of the opposite end for an edge to be returned.

Returns:

Returns the edges of the given cell.

getEdges

public Object[] getEdges(Object cell,
                         Object parent,
                         boolean incoming,
                         boolean outgoing,
                         boolean includeLoops)

Returns the incoming and/or outgoing edges for the given cell. If the optional parent argument is specified, then only edges are returned where the opposite is in the given parent cell.

Parameters:

cell - Cell whose edges should be returned.

parent - Optional parent. If specified the opposite end of any edge must be a direct child of that parent in order for the edge to be returned.

incoming - Specifies if incoming edges should be included in the result.

outgoing - Specifies if outgoing edges should be included in the result.

includeLoops - Specifies if loops should be included in the result.

Returns:

Returns the edges connected to the given cell.

getEdges

public Object[] getEdges(Object cell,
                         Object parent,
                         boolean incoming,
                         boolean outgoing,
                         boolean includeLoops,
                         boolean recurse)

Returns the incoming and/or outgoing edges for the given cell. If the optional parent argument is specified, then only edges are returned where the opposite is in the given parent cell.

Parameters:

cell - Cell whose edges should be returned.

parent - Optional parent. If specified the opposite end of any edge must be a child of that parent in order for the edge to be returned. The recurse parameter specifies whether or not it must be the direct child or the parent just be an ancestral parent.

incoming - Specifies if incoming edges should be included in the result.

outgoing - Specifies if outgoing edges should be included in the result.

includeLoops - Specifies if loops should be included in the result.

recurse - Specifies if the parent specified only need be an ancestral parent, true, or the direct parent, false

Returns:

Returns the edges connected to the given cell.

isValidAncestor

public boolean isValidAncestor(Object cell,
                               Object parent,
                               boolean recurse)

Returns whether or not the specified parent is a valid ancestor of the specified cell, either direct or indirectly based on whether ancestor recursion is enabled.

Parameters:

cell - the possible child cell

parent - the possible parent cell

recurse - whether or not to recurse the child ancestors

Returns:

whether or not the specified parent is a valid ancestor of the specified cell, either direct or indirectly based on whether ancestor recursion is enabled.

getOpposites

public Object[] getOpposites(Object[] edges,
                             Object terminal)

Returns all distinct visible opposite cells of the terminal on the given edges.

Parameters:

edges -

terminal -

Returns:

Returns the terminals at the opposite ends of the given edges.

getOpposites

public Object[] getOpposites(Object[] edges,
                             Object terminal,
                             boolean sources,
                             boolean targets)

Returns all distincts visible opposite cells for the specified terminal on the given edges.

Parameters:

edges - Edges whose opposite terminals should be returned.

terminal - Terminal that specifies the end whose opposite should be returned.

sources - Specifies if source terminals should be included in the result.

targets - Specifies if target terminals should be included in the result.

Returns:

Returns the cells at the opposite ends of the given edges.

getEdgesBetween

public Object[] getEdgesBetween(Object source,
                                Object target)

Returns the edges between the given source and target. This takes into account collapsed and invisible cells and returns the connected edges as displayed on the screen.

Parameters:

source -

target -

Returns:

Returns all edges between the given terminals.

getEdgesBetween

public Object[] getEdgesBetween(Object source,
                                Object target,
                                boolean directed)

Returns the edges between the given source and target. This takes into account collapsed and invisible cells and returns the connected edges as displayed on the screen.

Parameters:

source -

target -

directed -

Returns:

Returns all edges between the given terminals.

getCellsBeyond

public Object[] getCellsBeyond(double x0,
                               double y0,
                               Object parent,
                               boolean rightHalfpane,
                               boolean bottomHalfpane)

Returns the children of the given parent that are contained in the halfpane from the given point (x0, y0) rightwards and downwards depending on rightHalfpane and bottomHalfpane.

Parameters:

x0 - X-coordinate of the origin.

y0 - Y-coordinate of the origin.

parent - whose children should be checked.

rightHalfpane - Boolean indicating if the cells in the right halfpane from the origin should be returned.

bottomHalfpane - Boolean indicating if the cells in the bottom halfpane from the origin should be returned.

Returns:

Returns the cells beyond the given halfpane.

findTreeRoots

public List<Object> findTreeRoots(Object parent)

Returns all visible children in the given parent which do not have incoming edges. If the result is empty then the with the greatest difference between incoming and outgoing edges is returned. This takes into account edges that are being promoted to the given root due to invisible children or collapsed cells.

Parameters:

parent - Cell whose children should be checked.

Returns:

List of tree roots in parent.

findTreeRoots

public List<Object> findTreeRoots(Object parent,
                                  boolean isolate)

Returns all visible children in the given parent which do not have incoming edges. If the result is empty then the children with the maximum difference between incoming and outgoing edges are returned. This takes into account edges that are being promoted to the given root due to invisible children or collapsed cells.

Parameters:

parent - Cell whose children should be checked.

isolate - Specifies if edges should be ignored if the opposite end is not a child of the given parent cell.

Returns:

List of tree roots in parent.

findTreeRoots

public List<Object> findTreeRoots(Object parent,
                                  boolean isolate,
                                  boolean invert)

Returns all visible children in the given parent which do not have incoming edges. If the result is empty then the children with the maximum difference between incoming and outgoing edges are returned. This takes into account edges that are being promoted to the given root due to invisible children or collapsed cells.

Parameters:

parent - Cell whose children should be checked.

isolate - Specifies if edges should be ignored if the opposite end is not a child of the given parent cell.

invert - Specifies if outgoing or incoming edges should be counted for a tree root. If false then outgoing edges will be counted.

Returns:

List of tree roots in parent.

traverse

public void traverse(Object vertex,
                     boolean directed,
                     mxGraph.mxICellVisitor visitor)

Traverses the tree starting at the given vertex. Here is how to use this method for a given vertex (root) which is typically the root of a tree: graph.traverse(root, true, new mxICellVisitor() { public boolean visit(Object vertex, Object edge) { System.out.println("edge="+graph.convertValueToString(edge)+ " vertex="+graph.convertValueToString(vertex)); return true; } });

Parameters:

vertex -

directed -

visitor -

traverse

public void traverse(Object vertex,
                     boolean directed,
                     mxGraph.mxICellVisitor visitor,
                     Object edge,
                     Set<Object> visited)

Traverses the (directed) graph invoking the given function for each visited vertex and edge. The function is invoked with the current vertex and the incoming edge as a parameter. This implementation makes sure each vertex is only visited once. The function may return false if the traversal should stop at the given vertex.

Parameters:

vertex - that represents the vertex where the traversal starts.

directed - Optional boolean indicating if edges should only be traversed from source to target. Default is true.

visitor - Visitor that takes the current vertex and the incoming edge. The traversal stops if the function returns false.

edge - Optional that represents the incoming edge. This is null for the first step of the traversal.

visited - Optional array of cell paths for the visited cells.

getSelectionModel

public mxGraphSelectionModel getSelectionModel()

getSelectionCount

public int getSelectionCount()

isCellSelected

public boolean isCellSelected(Object cell)

Parameters:

cell -

Returns:

Returns true if the given cell is selected.

isSelectionEmpty

public boolean isSelectionEmpty()

Returns:

Returns true if the selection is empty.

clearSelection

public void clearSelection()

getSelectionCell

public Object getSelectionCell()

Returns:

Returns the selection cell.

setSelectionCell

public void setSelectionCell(Object cell)

Parameters:

cell -

getSelectionCells

public Object[] getSelectionCells()

Returns:

Returns the selection cells.

setSelectionCells

public void setSelectionCells(Object[] cells)

setSelectionCells

public void setSelectionCells(Collection<Object> cells)

Parameters:

cells -

addSelectionCell

public void addSelectionCell(Object cell)

addSelectionCells

public void addSelectionCells(Object[] cells)

removeSelectionCell

public void removeSelectionCell(Object cell)

removeSelectionCells

public void removeSelectionCells(Object[] cells)

selectNextCell

public void selectNextCell()

Selects the next cell.

selectPreviousCell

public void selectPreviousCell()

Selects the previous cell.

selectParentCell

public void selectParentCell()

Selects the parent cell.

selectChildCell

public void selectChildCell()

Selects the first child cell.

selectCell

public void selectCell(boolean isNext,
                       boolean isParent,
                       boolean isChild)

Selects the next, parent, first child or previous cell, if all arguments are false.

Parameters:

isNext -

isParent -

isChild -

selectVertices

public void selectVertices()

Selects all vertices inside the default parent.

selectVertices

public void selectVertices(Object parent)

Selects all vertices inside the given parent or the default parent if no parent is given.

selectEdges

public void selectEdges()

Selects all vertices inside the default parent.

selectEdges

public void selectEdges(Object parent)

Selects all vertices inside the given parent or the default parent if no parent is given.

selectCells

public void selectCells(boolean vertices,
                        boolean edges)

Selects all vertices and/or edges depending on the given boolean arguments recursively, starting at the default parent. Use selectAll to select all cells.

Parameters:

vertices - Boolean indicating if vertices should be selected.

edges - Boolean indicating if edges should be selected.

selectCells

public void selectCells(boolean vertices,
                        boolean edges,
                        Object parent)

Selects all vertices and/or edges depending on the given boolean arguments recursively, starting at the given parent or the default parent if no parent is specified. Use selectAll to select all cells.

Parameters:

vertices - Boolean indicating if vertices should be selected.

edges - Boolean indicating if edges should be selected.

parent - Optional cell that acts as the root of the recursion. Default is defaultParent.

selectAll

public void selectAll()

selectAll

public void selectAll(Object parent)

Selects all children of the given parent cell or the children of the default parent if no parent is specified. To select leaf vertices and/or edges use .

Parameters:

parent - Optional whose children should be selected. Default is .

drawGraph

public void drawGraph(mxICanvas canvas)

Draws the graph onto the given canvas.

Parameters:

canvas - Canvas onto which the graph should be drawn.

drawCell

public void drawCell(mxICanvas canvas,
                     Object cell)

Draws the given cell and its descendants onto the specified canvas.

Parameters:

canvas - Canvas onto which the cell should be drawn.

cell - Cell that should be drawn onto the canvas.

drawState

public void drawState(mxICanvas canvas,
                      mxCellState state,
                      boolean drawLabel)

Draws the cell state with the given label onto the canvas. No children or descendants are painted here. This method invokes cellDrawn after the cell, but not its descendants have been painted.

Parameters:

canvas - Canvas onto which the cell should be drawn.

state - State of the cell to be drawn.

drawLabel - Indicates if the label should be drawn.

cellDrawn

protected void cellDrawn(mxICanvas canvas,
                         mxCellState state,
                         Object element,
                         Object labelElement)

Called when a cell has been painted as the specified object, typically a DOM node that represents the given cell graphically in a document.

getLinkForCell

protected String getLinkForCell(Object cell)

Returns the hyperlink to be used for the given cell.

getTargetForCell

protected String getTargetForCell(Object cell)

Returns the hyperlink to be used for the given cell.

addPropertyChangeListener

public void addPropertyChangeListener(PropertyChangeListener listener)

Parameters:

listener -

See Also:

PropertyChangeSupport.addPropertyChangeListener(java.beans.PropertyChangeListener)

addPropertyChangeListener

public void addPropertyChangeListener(String propertyName,
                                      PropertyChangeListener listener)

Parameters:

propertyName -

listener -

See Also:

PropertyChangeSupport.addPropertyChangeListener(java.lang.String, java.beans.PropertyChangeListener)

removePropertyChangeListener

public void removePropertyChangeListener(PropertyChangeListener listener)

Parameters:

listener -

See Also:

PropertyChangeSupport.removePropertyChangeListener(java.beans.PropertyChangeListener)

removePropertyChangeListener

public void removePropertyChangeListener(String propertyName,
                                         PropertyChangeListener listener)

Parameters:

propertyName -

listener -

See Also:

PropertyChangeSupport.removePropertyChangeListener(java.lang.String, java.beans.PropertyChangeListener)

main

public static void main(String[] args)

Prints the version number on the console.