org.jhotdraw.draw.tool

Class DefaultHandleTracker

java.lang.Object

org.jhotdraw.beans.AbstractBean

org.jhotdraw.draw.tool.AbstractTool

org.jhotdraw.draw.tool.DefaultHandleTracker

All Implemented Interfaces:

java.awt.event.KeyListener, java.awt.event.MouseListener, java.awt.event.MouseMotionListener, java.io.Serializable, java.lang.Cloneable, java.util.EventListener, HandleTracker, Tool

public class DefaultHandleTracker
extends AbstractTool
implements HandleTracker

DefaultHandleTracker implements interactions with the handles of a Figure.

The DefaultHandleTracker handles one of the three states of the SelectionTool. Iz comes into action, when the user presses the mouse button over a Figure.

Design pattern:
Name: Chain of Responsibility.
Role: Handler.
Partners: SelectionTool as Handler, SelectAreaTracker as Handler, DragTracker as Handler, DefaultHandleTracker as Handler.

Design pattern:
Name: State.
Role: State.
Partners: SelectAreaTracker as State, DragTracker as State, SelectionTool as Context.

See Also:

SelectionTool, Serialized Form

Field Summary

Fields inherited from class org.jhotdraw.draw.tool.AbstractTool

anchor, editor, isWorking, listenerList

Fields inherited from class org.jhotdraw.beans.AbstractBean

propertySupport

Constructor Summary

Constructors

Constructor and Description
DefaultHandleTracker()
DefaultHandleTracker(Handle handle) Creates a new instance.
DefaultHandleTracker(Handle master, java.util.Collection<Handle> handles)

Method Summary

Modifier and Type	Method and Description
void	activate(DrawingEditor editor) Activates the tool for the given editor.
protected void	clearHoverHandles()
void	deactivate(DrawingEditor editor) Deactivates the tool.
void	draw(java.awt.Graphics2D g) Draws the tool.
void	keyPressed(java.awt.event.KeyEvent evt) The Tool uses the InputMap to determine what to do, when a key is pressed.
void	keyReleased(java.awt.event.KeyEvent evt)
void	keyTyped(java.awt.event.KeyEvent evt)
void	mouseClicked(java.awt.event.MouseEvent evt)
void	mouseDragged(java.awt.event.MouseEvent evt)
void	mouseEntered(java.awt.event.MouseEvent evt)
void	mouseExited(java.awt.event.MouseEvent evt)
void	mouseMoved(java.awt.event.MouseEvent evt)
void	mousePressed(java.awt.event.MouseEvent evt)
void	mouseReleased(java.awt.event.MouseEvent evt)
void	setHandles(Handle handle, java.util.Collection<Handle> compatibleHandles)
protected void	updateHoverHandles(DrawingView view, Figure f)

Methods inherited from class org.jhotdraw.draw.tool.AbstractTool

addToolListener, addUndoableEditListener, constrainPoint, constrainPoint, createActionMap, createInputMap, editCopy, editCut, editDelete, editDuplicate, editPaste, fireAreaInvalidated, fireAreaInvalidated, fireBoundsInvalidated, fireToolDone, fireToolStarted, getActionMap, getDrawing, getEditor, getInputMap, getToolTipText, getView, isActive, maybeFireBoundsInvalidated, removeToolListener, removeUndoableEditListener, setActionMap, setInputMap, supportsHandleInteraction, updateCursor, viewToDrawing

Methods inherited from class org.jhotdraw.beans.AbstractBean

addPropertyChangeListener, addPropertyChangeListener, clone, firePropertyChange, firePropertyChange, firePropertyChange, getPropertyChangeListeners, removePropertyChangeListener, removePropertyChangeListener

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.jhotdraw.draw.tool.Tool

addToolListener, editCopy, editCut, editDelete, editDuplicate, editPaste, getToolTipText, removeToolListener, supportsHandleInteraction

Constructor Detail

DefaultHandleTracker

public DefaultHandleTracker(Handle handle)

Creates a new instance.

DefaultHandleTracker

public DefaultHandleTracker(Handle master,
                            java.util.Collection<Handle> handles)

DefaultHandleTracker

public DefaultHandleTracker()

Method Detail

draw

public void draw(java.awt.Graphics2D g)

Description copied from interface: Tool

Draws the tool.

Specified by:

draw in interface Tool

Overrides:

draw in class AbstractTool

activate

public void activate(DrawingEditor editor)

Description copied from interface: Tool

Activates the tool for the given editor. This method is called whenever the user switches to this tool.

Specified by:

activate in interface Tool

Overrides:

activate in class AbstractTool

deactivate

public void deactivate(DrawingEditor editor)

Description copied from interface: Tool

Deactivates the tool. This method is called whenever the user switches to another tool.

Specified by:

deactivate in interface Tool

Overrides:

deactivate in class AbstractTool

keyPressed

public void keyPressed(java.awt.event.KeyEvent evt)

Description copied from class: AbstractTool

The Tool uses the InputMap to determine what to do, when a key is pressed. If the corresponding value of the InputMap is a String, the ActionMap of the tool is used, to find the action to be performed. If the corresponding value of the InputMap is a ActionListener, the actionPerformed method of the ActionListener is performed.

Specified by:

keyPressed in interface java.awt.event.KeyListener

Overrides:

keyPressed in class AbstractTool

keyReleased

public void keyReleased(java.awt.event.KeyEvent evt)

Specified by:

keyReleased in interface java.awt.event.KeyListener

Overrides:

keyReleased in class AbstractTool

keyTyped

public void keyTyped(java.awt.event.KeyEvent evt)

Specified by:

keyTyped in interface java.awt.event.KeyListener

Overrides:

keyTyped in class AbstractTool

mouseClicked

public void mouseClicked(java.awt.event.MouseEvent evt)

Specified by:

mouseClicked in interface java.awt.event.MouseListener

Overrides:

mouseClicked in class AbstractTool

mouseDragged

public void mouseDragged(java.awt.event.MouseEvent evt)

Specified by:

mouseDragged in interface java.awt.event.MouseMotionListener

mouseEntered

public void mouseEntered(java.awt.event.MouseEvent evt)

Specified by:

mouseEntered in interface java.awt.event.MouseListener

Overrides:

mouseEntered in class AbstractTool

mouseExited

public void mouseExited(java.awt.event.MouseEvent evt)

Specified by:

mouseExited in interface java.awt.event.MouseListener

Overrides:

mouseExited in class AbstractTool

mouseMoved

public void mouseMoved(java.awt.event.MouseEvent evt)

Specified by:

mouseMoved in interface java.awt.event.MouseMotionListener

Overrides:

mouseMoved in class AbstractTool

mousePressed

public void mousePressed(java.awt.event.MouseEvent evt)

Specified by:

mousePressed in interface java.awt.event.MouseListener

Overrides:

mousePressed in class AbstractTool

mouseReleased

public void mouseReleased(java.awt.event.MouseEvent evt)

Specified by:

mouseReleased in interface java.awt.event.MouseListener

Overrides:

mouseReleased in class AbstractTool

clearHoverHandles

protected void clearHoverHandles()

updateHoverHandles

protected void updateHoverHandles(DrawingView view,
                                  Figure f)

setHandles

public void setHandles(Handle handle,
                       java.util.Collection<Handle> compatibleHandles)

Specified by:

setHandles in interface HandleTracker