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java.lang.Objectedu.umd.cs.piccolo.event.PBasicInputEventHandler
edu.umd.cs.piccolo.event.PDragSequenceEventHandler
edu.umd.cs.piccolox.event.PSelectionEventHandler
edu.umd.cs.piccolox.swt.PSWTSelectionEventHandler
public class PSWTSelectionEventHandler
Selection event handler modified to use SWT paths instead of normal paths.
Nested Class Summary |
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Nested classes/interfaces inherited from class edu.umd.cs.piccolox.event.PSelectionEventHandler |
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PSelectionEventHandler.BoundsFilter |
Field Summary | |
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(package private) Point2D |
canvasPressPt
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(package private) PSWTPath |
marquee
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(package private) PNode |
marqueeParent
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(package private) Point2D |
pressPt
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Fields inherited from class edu.umd.cs.piccolox.event.PSelectionEventHandler |
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SELECTION_CHANGED_NOTIFICATION |
Constructor Summary | |
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PSWTSelectionEventHandler(PNode marqueeParent,
List selectableParents)
Creates a selection event handler. |
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PSWTSelectionEventHandler(PNode marqueeParent,
PNode selectableParent)
Creates a selection event handler. |
Method Summary | |
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void |
decorateSelectedNode(PNode node)
Modifies the provided node so that it is displayed as selected. |
protected void |
dragActivityStep(PInputEvent aEvent)
This gets called continuously during the drag, and is used to animate the marquee. |
protected void |
endMarqueeSelection(PInputEvent e)
Removes marquee and clears selection. |
protected PBounds |
getMarqueeBounds()
Returns the bounds of the current selection marquee. |
protected void |
initializeMarquee(PInputEvent e)
Creates an empty marquee child for use in displaying the marquee around the selection. |
protected void |
initializeSelection(PInputEvent pie)
Starts a selection based on the provided event. |
void |
undecorateSelectedNode(PNode node)
Undoes any modifications to the provided node so that it is not displayed as selected. |
protected void |
updateMarquee(PInputEvent pie)
Updates the marquee rectangle as the result of a drag. |
Methods inherited from class edu.umd.cs.piccolo.event.PDragSequenceEventHandler |
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dragActivityFinalStep, dragActivityFirstStep, getDragActivity, getMinDragStartDistance, getMousePressedCanvasPoint, isDragging, mouseDragged, mousePressed, mouseReleased, setIsDragging, setMinDragStartDistance, shouldStartDragInteraction, startDragActivity, stopDragActivity |
Methods inherited from class edu.umd.cs.piccolo.event.PBasicInputEventHandler |
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acceptsEvent, getEventFilter, keyboardFocusGained, keyboardFocusLost, keyReleased, keyTyped, mouseClicked, mouseEntered, mouseExited, mouseMoved, mouseWheelRotated, mouseWheelRotatedByBlock, paramString, processEvent, setEventFilter |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
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PSWTPath marquee
PNode marqueeParent
Point2D pressPt
Point2D canvasPressPt
Constructor Detail |
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public PSWTSelectionEventHandler(PNode marqueeParent, PNode selectableParent)
marqueeParent
- The node to which the event handler dynamically adds
a marquee (temporarily) to represent the area being selected.selectableParent
- The node whose children will be selected by this
event handler.public PSWTSelectionEventHandler(PNode marqueeParent, List selectableParents)
marqueeParent
- The node to which the event handler dynamically adds
a marquee (temporarily) to represent the area being selected.selectableParents
- A list of nodes whose children will be selected
by this event handler.Method Detail |
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public void decorateSelectedNode(PNode node)
decorateSelectedNode
in class PSelectionEventHandler
node
- node to be decoratedpublic void undecorateSelectedNode(PNode node)
undecorateSelectedNode
in class PSelectionEventHandler
node
- node to be undecoratedprotected void initializeSelection(PInputEvent pie)
initializeSelection
in class PSelectionEventHandler
pie
- event used to populate the selectionprotected void initializeMarquee(PInputEvent e)
initializeMarquee
in class PSelectionEventHandler
e
- event responsible for the initializationprotected void updateMarquee(PInputEvent pie)
updateMarquee
in class PSelectionEventHandler
pie
- event responsible for the change in the marqueeprotected PBounds getMarqueeBounds()
getMarqueeBounds
in class PSelectionEventHandler
protected void endMarqueeSelection(PInputEvent e)
endMarqueeSelection
in class PSelectionEventHandler
e
- event responsible for the end of the selectionprotected void dragActivityStep(PInputEvent aEvent)
dragActivityStep
in class PSelectionEventHandler
aEvent
- event responsible for this step in the drag sequence
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