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phoebe.event
Class PSelectionHandler  

java.lang.Object
  PDragSequenceEventHandler
      phoebe.event.PSelectionHandler

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public class PSelectionHandler

extends PDragSequenceEventHandler

PSelectionHandler provides standard interaction for selection. Clicking selects the object under the cursor. Shift-clicking allows multiple objects to be selected. Dragging offers marquee selection. Pressing the delete key deletes the selection by default.

Version:

1.0

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Nested Class Summary
protected  class	PSelectionHandler.BoundsFilter

 

Field Summary
private  java.util.Hashtable	allItems
private  java.awt.geom.Point2D	canvasPressPt
(package private) static int	DASH_WIDTH
private  boolean	deleteKeyActive
private  PPath	marquee
private  java.util.HashMap	marqueeMap
private  PNode	marqueeParent
private  boolean	mouseDown
(package private) static int	NUM_STROKES
private  PNode	pressNode
private  java.awt.geom.Point2D	presspt
private  java.util.ArrayList	selectableParents
private  java.util.Hashtable	selection
static java.lang.String	SELECTION_CHANGED_NOTIFICATION
private  boolean	selectionMade
private  float	strokeNum
private  java.awt.Stroke[]	strokes
private  java.util.ArrayList	unselectList

 

Constructor Summary

PSelectionHandler(PNode marqueeParent, PNode selectableParent)           Creates a selection event handler.

 

Method Summary
void	addSelectableParent(PNode node)
protected  void	computeMarqueeSelection(PInputEvent pie)
protected  void	computeOptionMarqueeSelection(PInputEvent pie)
protected  PNodeFilter	createNodeFilter(PBounds bounds)
void	decorateSelectedNode(PNode node)
protected  void	drag(PInputEvent e)
protected  void	dragStandardSelection(PInputEvent e)
protected  void	endDrag(PInputEvent e)
protected  void	endMarqueeSelection(PInputEvent e)
protected  void	endStandardSelection(PInputEvent e)
protected  PBounds	getMarqueeBounds()
java.util.Collection	getSelectableParents()
java.util.Collection	getSelection()
boolean	getSupportDeleteKey()
protected  void	init()
protected  void	initializeMarquee(PInputEvent e)
protected  void	initializeSelection(PInputEvent pie)
boolean	isDeleteKeyActive()
protected  boolean	isMarqueeSelection(PInputEvent pie)
boolean	isOptionSelection(PInputEvent pie)
protected  boolean	isSelectable(PNode node)           Determine if the specified node is selectable (i.e., if it is a child of the one the list of selectable parents.
boolean	isSelected(PNode node)
void	keyPressed(PInputEvent e)           Delete selection when delete key is pressed (if enabled)
void	removeSelectableParent(PNode node)
void	select(java.util.Collection items)
void	select(java.util.Map items)
void	setDeleteKeyActive(boolean deleteKeyActive)           Specifies if the DELETE key should delete the selection
void	setSelectableParent(PNode node)
void	setSelectableParents(java.util.Collection c)
protected  void	startDrag(PInputEvent e)
protected  void	startMarqueeSelection(PInputEvent e)
protected  void	startOptionMarqueeSelection(PInputEvent e)
protected  void	startStandardOptionSelection(PInputEvent pie)
protected  void	startStandardSelection(PInputEvent pie)
void	undecorateSelectedNode(PNode node)
void	unselect(java.util.Collection items)
void	unselectAll()
protected  void	updateMarquee(PInputEvent pie)

 

Methods inherited from class java.lang.Object

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

 

Field Detail

SELECTION_CHANGED_NOTIFICATION

public static final java.lang.String SELECTION_CHANGED_NOTIFICATION

See Also:

Constant Field Values

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DASH_WIDTH

static final int DASH_WIDTH

See Also:

Constant Field Values

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NUM_STROKES

static final int NUM_STROKES

See Also:

Constant Field Values

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selection

private java.util.Hashtable selection

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selectableParents

private java.util.ArrayList selectableParents

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marquee

private PPath marquee

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marqueeParent

private PNode marqueeParent

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presspt

private java.awt.geom.Point2D presspt

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canvasPressPt

private java.awt.geom.Point2D canvasPressPt

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strokeNum

private float strokeNum

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strokes

private java.awt.Stroke[] strokes

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allItems

private java.util.Hashtable allItems

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unselectList

private java.util.ArrayList unselectList

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marqueeMap

private java.util.HashMap marqueeMap

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pressNode

private PNode pressNode

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deleteKeyActive

private boolean deleteKeyActive

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mouseDown

private boolean mouseDown

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selectionMade

private boolean selectionMade

Constructor Detail

PSelectionHandler

public PSelectionHandler(PNode marqueeParent,
                         PNode selectableParent)

Creates a selection event handler.

Method Detail

init

protected void init()

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select

public void select(java.util.Collection items)

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select

public void select(java.util.Map items)

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decorateSelectedNode

public void decorateSelectedNode(PNode node)

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unselect

public void unselect(java.util.Collection items)

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undecorateSelectedNode

public void undecorateSelectedNode(PNode node)

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unselectAll

public void unselectAll()

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isSelected

public boolean isSelected(PNode node)

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getSelection

public java.util.Collection getSelection()

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isSelectable

protected boolean isSelectable(PNode node)

Determine if the specified node is selectable (i.e., if it is a child of the one the list of selectable parents.

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addSelectableParent

public void addSelectableParent(PNode node)

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removeSelectableParent

public void removeSelectableParent(PNode node)

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setSelectableParent

public void setSelectableParent(PNode node)

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setSelectableParents

public void setSelectableParents(java.util.Collection c)

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getSelectableParents

public java.util.Collection getSelectableParents()

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startDrag

protected void startDrag(PInputEvent e)

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drag

protected void drag(PInputEvent e)

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endDrag

protected void endDrag(PInputEvent e)

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isOptionSelection

public boolean isOptionSelection(PInputEvent pie)

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isMarqueeSelection

protected boolean isMarqueeSelection(PInputEvent pie)

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initializeSelection

protected void initializeSelection(PInputEvent pie)

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initializeMarquee

protected void initializeMarquee(PInputEvent e)

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startOptionMarqueeSelection

protected void startOptionMarqueeSelection(PInputEvent e)

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startMarqueeSelection

protected void startMarqueeSelection(PInputEvent e)

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startStandardSelection

protected void startStandardSelection(PInputEvent pie)

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startStandardOptionSelection

protected void startStandardOptionSelection(PInputEvent pie)

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updateMarquee

protected void updateMarquee(PInputEvent pie)

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computeMarqueeSelection

protected void computeMarqueeSelection(PInputEvent pie)

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computeOptionMarqueeSelection

protected void computeOptionMarqueeSelection(PInputEvent pie)

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createNodeFilter

protected PNodeFilter createNodeFilter(PBounds bounds)

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getMarqueeBounds

protected PBounds getMarqueeBounds()

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dragStandardSelection

protected void dragStandardSelection(PInputEvent e)

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endMarqueeSelection

protected void endMarqueeSelection(PInputEvent e)

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endStandardSelection

protected void endStandardSelection(PInputEvent e)

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keyPressed

public void keyPressed(PInputEvent e)

Delete selection when delete key is pressed (if enabled)

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getSupportDeleteKey

public boolean getSupportDeleteKey()

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isDeleteKeyActive

public boolean isDeleteKeyActive()

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setDeleteKeyActive

public void setDeleteKeyActive(boolean deleteKeyActive)

Specifies if the DELETE key should delete the selection

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