org.eclipse.gef.ui.actions
Class UndoAction

java.lang.Object
  |
  +--org.eclipse.jface.action.Action
        |
        +--org.eclipse.gef.ui.actions.EditorPartAction
              |
              +--org.eclipse.gef.ui.actions.StackAction
                    |
                    +--org.eclipse.gef.ui.actions.UndoAction

All Implemented Interfaces:

CommandStackListener, Disposable, IAction

public class UndoAction

extends StackAction

An action to undo the last command.

Fields inherited from class org.eclipse.gef.ui.actions.EditorPartAction

DYNAMIC, style

Fields inherited from interface org.eclipse.gef.commands.CommandStackListener

copyright

Fields inherited from interface org.eclipse.jface.action.IAction

AS_CHECK_BOX, AS_DROP_DOWN_MENU, AS_PUSH_BUTTON, CHECKED, DESCRIPTION, ENABLED, IMAGE, TEXT, TOOL_TIP_TEXT

Constructor Summary

UndoAction(IEditorPart editor)
Creates an UndoAction and associates it with the given editor.

Method Summary

protected boolean	calculateEnabled() Returns true if the CommandStack can undo the last command.
void	commandStackChanged(EventObject e) Updates the labels and enabled state when the command stack is altered.
protected void	init() Initializes this action's text and images.
protected void	refresh() Refreshes this action's text to use the last executed command's label.
void	run() Undoes the last command.

Methods inherited from class org.eclipse.gef.ui.actions.StackAction

getLabelForCommand, hookEditorPart, unhookEditorPart

Methods inherited from class org.eclipse.gef.ui.actions.EditorPartAction

checkStyle, dispose, execute, getCommandStack, getEditorPart, isDynamic, isEnabled, setEditorPart

Methods inherited from class org.eclipse.jface.action.Action

addPropertyChangeListener, convertAccelerator, convertAccelerator, findKeyCode, findKeyString, findModifier, findModifierString, firePropertyChange, firePropertyChange, getAccelerator, getActionDefinitionId, getDescription, getDisabledImageDescriptor, getHelpListener, getHoverImageDescriptor, getId, getImageDescriptor, getMenuCreator, getStyle, getText, getToolTipText, isChecked, removeAcceleratorText, removePropertyChangeListener, runWithEvent, setAccelerator, setActionDefinitionId, setChecked, setDescription, setDisabledImageDescriptor, setEnabled, setHelpListener, setHoverImageDescriptor, setId, setImageDescriptor, setMenuCreator, setText, setToolTipText

Methods inherited from class java.lang.Object

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

Constructor Detail

UndoAction

public UndoAction(IEditorPart editor)

Creates an UndoAction and associates it with the given editor.

Parameters:

editor - The editor this action is associated with.

Method Detail

commandStackChanged

public void commandStackChanged(EventObject e)

Updates the labels and enabled state when the command stack is altered.

Parameters:

e - The EventObject.

calculateEnabled

protected boolean calculateEnabled()

Returns true if the CommandStack can undo the last command.

Overrides:

calculateEnabled in class EditorPartAction

init

protected void init()

Initializes this action's text and images.

Overrides:

init in class EditorPartAction

refresh

protected void refresh()

Refreshes this action's text to use the last executed command's label.

Overrides:

refresh in class EditorPartAction

run

public void run()

Undoes the last command.

Overrides:

run in class Action