mxGraph 1.10.4.0


com.mxgraph.swing.handler
Class mxEdgeHandler

java.lang.Object
  extended by com.mxgraph.swing.handler.mxCellHandler
      extended by com.mxgraph.swing.handler.mxEdgeHandler
Direct Known Subclasses:
mxElbowEdgeHandler

public class mxEdgeHandler
extends mxCellHandler


Field Summary
protected  boolean cloneEnabled
           
protected  boolean constrainedEvent
          Workaround for shift-key-state not correct in mouseReleased.
protected  String error
           
protected  boolean gridEnabledEvent
          Workaround for alt-key-state not correct in mouseReleased.
protected  mxCellMarker marker
           
protected  Point[] p
           
 
Fields inherited from class com.mxgraph.swing.handler.mxCellHandler
bounds, first, graphComponent, handles, handlesVisible, index, preview, state
 
Constructor Summary
mxEdgeHandler(mxGraphComponent graphComponent, mxCellState state)
           
 
Method Summary
protected  void connect(Object edge, Object terminal, boolean isSource, boolean isClone)
          Connects the given edge to the given source or target terminal.
protected  mxPoint convertPoint(mxPoint point, boolean gridEnabled)
           
protected  Rectangle createHandle(Point center)
           
protected  Rectangle createHandle(Point center, int size)
           
protected  Rectangle[] createHandles()
          Creates the rectangles that define the handles.
protected  Point[] createPoints(mxCellState s)
           
protected  JComponent createPreview()
          Creates the preview for this handler.
protected  Cursor getCursor(MouseEvent e, int index)
          Returns the cursor for the given event and handle.
protected  Color getHandleFillColor(int index)
          Returns the color to be used to fill the handle at the specified index.
 int getIndexAt(int x, int y)
          Returns the index of the handle at the given location.
protected  Rectangle getPreviewBounds()
           
 Color getSelectionColor()
          Returns the color used to draw the selection border.
 Stroke getSelectionStroke()
          Returns the stroke used to draw the selection border.
protected  boolean isCellBendable()
           
 boolean isCloneEnabled()
           
protected  boolean isFlipEvent(MouseEvent e)
           
protected  boolean isHandleVisible(int index)
          Hides the middle handle if the edge is not bendable.
protected  boolean isIgnoredEvent(MouseEvent e)
          No flip event is ignored.
 boolean isSource(int index)
          Returns true if the current index is 0.
 boolean isTarget(int index)
          Returns true if the current index is the last index.
 void mouseDragged(MouseEvent e)
          Processes the given event.
 void mousePressed(MouseEvent e)
          Processes the given event.
 void mouseReleased(MouseEvent e)
          Processes the given event.
protected  void moveLabelTo(mxCellState edgeState, double x, double y)
          Moves the label to the given position.
protected  void movePoint(Object edge, int pointIndex, mxPoint point)
          Moves the edges control point with the given index to the given point.
 void paint(Graphics g)
          Paints the visible handles of this handler.
 void reset()
          Extends the implementation to reset the current error and marker.
 void setCloneEnabled(boolean cloneEnabled)
           
 String validateConnection(Object source, Object target)
          Returns the error message or an empty string if the connection for the given source target pair is not valid.
 
Methods inherited from class com.mxgraph.swing.handler.mxCellHandler
destroy, getBounds, getGraphComponent, getHandleBorderColor, getHandleCount, getIndex, getState, getToolTipText, isActive, isHandleEnabled, isHandlesVisible, isLabel, isLabelMovable, mouseMoved, refresh, setHandlesVisible, start
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

cloneEnabled

protected boolean cloneEnabled

p

protected Point[] p

error

protected transient String error

gridEnabledEvent

protected transient boolean gridEnabledEvent
Workaround for alt-key-state not correct in mouseReleased.


constrainedEvent

protected transient boolean constrainedEvent
Workaround for shift-key-state not correct in mouseReleased.


marker

protected mxCellMarker marker
Constructor Detail

mxEdgeHandler

public mxEdgeHandler(mxGraphComponent graphComponent,
                     mxCellState state)
Parameters:
graphComponent -
state -
Method Detail

setCloneEnabled

public void setCloneEnabled(boolean cloneEnabled)

isCloneEnabled

public boolean isCloneEnabled()

isIgnoredEvent

protected boolean isIgnoredEvent(MouseEvent e)
No flip event is ignored.

Overrides:
isIgnoredEvent in class mxCellHandler

isFlipEvent

protected boolean isFlipEvent(MouseEvent e)

validateConnection

public String validateConnection(Object source,
                                 Object target)
Returns the error message or an empty string if the connection for the given source target pair is not valid. Otherwise it returns null.


isSource

public boolean isSource(int index)
Returns true if the current index is 0.


isTarget

public boolean isTarget(int index)
Returns true if the current index is the last index.


isHandleVisible

protected boolean isHandleVisible(int index)
Hides the middle handle if the edge is not bendable.

Overrides:
isHandleVisible in class mxCellHandler

isCellBendable

protected boolean isCellBendable()

createHandles

protected Rectangle[] createHandles()
Description copied from class: mxCellHandler
Creates the rectangles that define the handles.

Overrides:
createHandles in class mxCellHandler

getHandleFillColor

protected Color getHandleFillColor(int index)
Description copied from class: mxCellHandler
Returns the color to be used to fill the handle at the specified index.

Overrides:
getHandleFillColor in class mxCellHandler

getIndexAt

public int getIndexAt(int x,
                      int y)
Description copied from class: mxCellHandler
Returns the index of the handle at the given location.

Overrides:
getIndexAt in class mxCellHandler
Parameters:
x -
y -
Returns:
Returns the inde of the handle at the given location.

createHandle

protected Rectangle createHandle(Point center)

createHandle

protected Rectangle createHandle(Point center,
                                 int size)

createPoints

protected Point[] createPoints(mxCellState s)

createPreview

protected JComponent createPreview()
Description copied from class: mxCellHandler
Creates the preview for this handler.

Overrides:
createPreview in class mxCellHandler

convertPoint

protected mxPoint convertPoint(mxPoint point,
                               boolean gridEnabled)
Parameters:
point -
gridEnabled -
Returns:
Returns the scaled, translated and grid-aligned point.

getPreviewBounds

protected Rectangle getPreviewBounds()
Returns:
Returns the bounds of the preview.

mousePressed

public void mousePressed(MouseEvent e)
Description copied from class: mxCellHandler
Processes the given event.

Overrides:
mousePressed in class mxCellHandler

mouseDragged

public void mouseDragged(MouseEvent e)
Description copied from class: mxCellHandler
Processes the given event.

Overrides:
mouseDragged in class mxCellHandler

mouseReleased

public void mouseReleased(MouseEvent e)
Description copied from class: mxCellHandler
Processes the given event.

Overrides:
mouseReleased in class mxCellHandler

reset

public void reset()
Extends the implementation to reset the current error and marker.

Overrides:
reset in class mxCellHandler

movePoint

protected void movePoint(Object edge,
                         int pointIndex,
                         mxPoint point)
Moves the edges control point with the given index to the given point.


connect

protected void connect(Object edge,
                       Object terminal,
                       boolean isSource,
                       boolean isClone)
Connects the given edge to the given source or target terminal.

Parameters:
edge -
terminal -
isSource -

moveLabelTo

protected void moveLabelTo(mxCellState edgeState,
                           double x,
                           double y)
Moves the label to the given position.


getCursor

protected Cursor getCursor(MouseEvent e,
                           int index)
Description copied from class: mxCellHandler
Returns the cursor for the given event and handle.

Overrides:
getCursor in class mxCellHandler

getSelectionColor

public Color getSelectionColor()
Description copied from class: mxCellHandler
Returns the color used to draw the selection border. This implementation returns null.

Overrides:
getSelectionColor in class mxCellHandler

getSelectionStroke

public Stroke getSelectionStroke()
Description copied from class: mxCellHandler
Returns the stroke used to draw the selection border. This implementation returns null.

Overrides:
getSelectionStroke in class mxCellHandler

paint

public void paint(Graphics g)
Description copied from class: mxCellHandler
Paints the visible handles of this handler.

Overrides:
paint in class mxCellHandler

mxGraph 1.10.4.0


Copyright (c) 2010 Gaudenz Alder, David Benson. All rights reserved.