mxGraphView

function mxGraphView( graph )

Constructs a new view for the given mxGraph.

Parameters

Specifies the resource key for the status message while the document is being updated.  If the resource for this key does not exist then the value is used as the status message.  Default is ‘updatingDocument’.

mxGraphView.prototype.getGraphBounds = function()

Returns graphBounds.

mxGraphView.prototype.setGraphBounds = function( value )

Sets graphBounds.

mxGraphView.prototype.getBounds = function( cells )

Returns the bounds (on the screen) for the given array of mxCells.

Parameters

mxGraphView.prototype.setCurrentRoot = function( root )

Sets and returns the current root and fires an <undo> event before calling mxGraph.sizeDidChange.

Parameters

mxGraphView.prototype.scaleAndTranslate = function( scale, dx, dy )

Sets the scale and translation and fires a scale and translate event before calling revalidate followed by mxGraph.sizeDidChange.

Parameters

mxGraphView.prototype.getScale = function()

Returns the scale.

mxGraphView.prototype.setScale = function( value )

Sets the scale and fires a scale event before calling revalidate followed by mxGraph.sizeDidChange.

Parameters

mxGraphView.prototype.getTranslate = function()

Returns the translate.

mxGraphView.prototype.setTranslate = function( dx, dy )

Sets the translation and fires a translate event before calling revalidate followed by mxGraph.sizeDidChange.  The translation is the negative of the origin.

Parameters

mxGraphView.prototype.refresh = function()

Clears the view if currentRoot is not null and revalidates.

mxGraphView.prototype.revalidate = function()

Revalidates the complete view with all cell states.

mxGraphView.prototype.clear = function( cell, force, recurse )

Removes the state of the given cell and all descendants if the given cell is not the current root.

Parameters

mxGraphView.prototype.invalidate = function( cell, recurse, includeEdges, orderChanged )

Invalidates the state of the given cell, all its descendants and connected edges.

Parameters

mxGraphView.prototype.validate = function( cell )

First validates all bounds and then validates all points recursively on all visible cells starting at the given cell.  Finally the background is validated using validateBackground.

Parameters

mxGraphView.prototype.createBackgroundPageShape = function( bounds )

Creates and returns the shape used as the background page.

Parameters

mxGraphView.prototype.validateBackground = function()

Validates the background image.

mxGraphView.prototype.getBackgroundPageBounds = function()

Returns the bounds for the background page.

mxGraphView.prototype.redrawBackgroundImage = function( backgroundImage, bg )

Updates the bounds and redraws the background image.

Example

If the background image should not be scaled, this can be replaced with the following.

mxGraphView.prototype.redrawBackground = function(backgroundImage, bg)
{
  backgroundImage.bounds.x = this.translate.x;
  backgroundImage.bounds.y = this.translate.y;
  backgroundImage.bounds.width = bg.width;
  backgroundImage.bounds.height = bg.height;

  backgroundImage.redraw();
};

Parameters

mxGraphView.prototype.validateBounds = function( parentState, cell )

Validates the bounds of the given parent’s child using the given parent state as the origin for the child.  The validation is carried out recursively for all non-collapsed descendants.

Parameters

mxGraphView.prototype.updateVertexLabelOffset = function( state )

Updates the absoluteOffset of the given vertex cell state.  This takes into account the label position styles.

Parameters

mxGraphView.prototype.validatePoints = function( parentState, cell )

Validates the points for the state of the given cell recursively if the cell is not collapsed and returns the bounding box of all visited states as an mxRectangle.

Parameters

mxGraphView.prototype.childMoved = function( parent, child )

Invoked when a child state was moved as a result of late evaluation of its position.  This is invoked for relative edge children whose position can only be determined after the points of the parent edge are updated in validatePoints, and validates the bounds of all descendants of the child using validateBounds.

Parameters

mxGraphView.prototype.updateFixedTerminalPoints = function( edge, source, target )

Sets the initial absolute terminal points in the given state before the edge style is computed.

Parameters

mxGraphView.prototype.updateFixedTerminalPoint = function( edge, terminal, source, constraint )

Sets the fixed source or target terminal point on the given edge.

Parameters

mxGraphView.prototype.updatePoints = function( edge, points, source, target )

Updates the absolute points in the given state using the specified array of mxPoints as the relative points.

Parameters

mxGraphView.prototype.transformControlPoint = function( state, pt )

Transforms the given control point to an absolute point.

mxGraphView.prototype.getEdgeStyle = function( edge, points, source, target )

Returns the edge style function to be used to render the given edge state.

mxGraphView.prototype.updateFloatingTerminalPoints = function( state, source, target )

Updates the terminal points in the given state after the edge style was computed for the edge.

Parameters

mxGraphView.prototype.updateFloatingTerminalPoint = function( edge, start, end, source )

Updates the absolute terminal point in the given state for the given start and end state, where start is the source if source is true.

Parameters

mxGraphView.prototype.getTerminalPort = function( state, terminal, source )

Returns an mxCellState that represents the source or target terminal or port for the given edge.

Parameters

mxGraphView.prototype.getPerimeterPoint = function( terminal, next, orthogonal, border )

Returns an mxPoint that defines the location of the intersection point between the perimeter and the line between the center of the shape and the given point.

Parameters

mxGraphView.prototype.getRoutingCenterX = function ( state )

Returns the x-coordinate of the center point for automatic routing.

mxGraphView.prototype.getRoutingCenterY = function ( state )

Returns the y-coordinate of the center point for automatic routing.

mxGraphView.prototype.getPerimeterBounds = function( terminal, border )

Returns the perimeter bounds for the given terminal, edge pair as an mxRectangle.

If you have a model where each terminal has a relative child that should act as the graphical endpoint for a connection from/to the terminal, then this method can be replaced as follows:

var oldGetPerimeterBounds = mxGraphView.prototype.getPerimeterBounds;
mxGraphView.prototype.getPerimeterBounds = function(terminal, edge, isSource)
{
  var model = this.graph.getModel();
  var childCount = model.getChildCount(terminal.cell);

  if (childCount > 0)
  {
    var child = model.getChildAt(terminal.cell, 0);
    var geo = model.getGeometry(child);

    if (geo != null &&
        geo.relative)
    {
      var state = this.getState(child);

      if (state != null)
      {
        terminal = state;
      }
    }
  }

  return oldGetPerimeterBounds.apply(this, arguments);
};

Parameters

mxGraphView.prototype.getPerimeterFunction = function( state )

Returns the perimeter function for the given state.

mxGraphView.prototype.getNextPoint = function( edge, opposite, source )

Returns the nearest point in the list of absolute points or the center of the opposite terminal.

Parameters

mxGraphView.prototype.getVisibleTerminal = function( edge, source )

Returns the nearest ancestor terminal that is visible.  The edge appears to be connected to this terminal on the display.  The result of this method is cached in mxCellState.getVisibleTerminalState.

Parameters

mxGraphView.prototype.updateEdgeBounds = function( state )

Updates the given state using the bounding box of the absolute points.  Also updates mxCellState.terminalDistance, mxCellState.length and mxCellState.segments.

Parameters

mxGraphView.prototype.getPoint = function( state, geometry )

Returns the absolute point on the edge for the given relative mxGeometry as an mxPoint.  The edge is represented by the given mxCellState.

Parameters

mxGraphView.prototype.getRelativePoint = function( edgeState, x, y )

Gets the relative point that describes the given, absolute label position for the given edge state.

Parameters

mxGraphView.prototype.updateEdgeLabelOffset = function( state )

Updates mxCellState.absoluteOffset for the given state.  The absolute offset is normally used for the position of the edge label.  Is is calculated from the geometry as an absolute offset from the center between the two endpoints if the geometry is absolute, or as the relative distance between the center along the line and the absolute orthogonal distance if the geometry is relative.

Parameters

mxGraphView.prototype.getState = function( cell, create )

Returns the mxCellState for the given cell.  If create is true, then the state is created if it does not yet exist.

Parameters

mxGraphView.prototype.isRendering = function()

Returns rendering.

mxGraphView.prototype.setRendering = function( value )

Sets rendering.

mxGraphView.prototype.isAllowEval = function()

Returns allowEval.

mxGraphView.prototype.setAllowEval = function( value )

Sets allowEval.

mxGraphView.prototype.getStates = function()

Returns <states>.

mxGraphView.prototype.setStates = function( value )

Sets <states>.

mxGraphView.prototype.getCellStates = function( cells )

Returns the mxCellStates for the given array of mxCells.  The array contains all states that are not null, that is, the returned array may have less elements than the given array.  If no argument is given, then this returns <states>.

mxGraphView.prototype.removeState = function( cell )

Removes and returns the mxCellState for the given cell.

Parameters

mxGraphView.prototype.createState = function( cell )

Creates and returns an mxCellState for the given cell and initializes it using mxCellRenderer.initialize.

Parameters

mxGraphView.prototype.getCanvas = function()

Returns the DOM node that contains the background-, draw- and overlaypane.

mxGraphView.prototype.getBackgroundPane = function()

Returns the DOM node that represents the background layer.

mxGraphView.prototype.getDrawPane = function()

Returns the DOM node that represents the main drawing layer.

mxGraphView.prototype.getOverlayPane = function()

Returns the DOM node that represents the topmost drawing layer.

mxGraphView.prototype.isContainerEvent = function( evt )

Returns true if the event origin is one of the drawing panes or containers of the view.

mxGraphView.prototype.isScrollEvent = function( evt )

Returns true if the event origin is one of the scrollbars of the container in IE.  Such events are ignored.

mxGraphView.prototype.init = function()

Initializes the graph event dispatch loop for the specified container and invokes create to create the required DOM nodes for the display.

mxGraphView.prototype.installListeners = function()

Installs the required listeners in the container.

mxGraphView.prototype.createHtml = function()

Creates the DOM nodes for the HTML display.

mxGraphView.prototype.updateHtmlCanvasSize = function( width, height )

Updates the size of the HTML canvas.

mxGraphView.prototype.createHtmlPane = function( width, height )

Creates and returns a drawing pane in HTML (DIV).

mxGraphView.prototype.createVml = function()

Creates the DOM nodes for the VML display.

mxGraphView.prototype.createVmlPane = function( width, height )

Creates a drawing pane in VML (group).

mxGraphView.prototype.createSvg = function()

Creates and returns the DOM nodes for the SVG display.

mxGraphView.prototype.updateContainerStyle = function( container )

Updates the style of the container after installing the SVG DOM elements.

mxGraphView.prototype.destroy = function()

Destroys the view and all its resources.

function mxCurrentRootChange( view, root )

Constructs a change of the current root in the given view.

mxCurrentRootChange.prototype.execute = function()

Changes the current root of the view.