Package org.eclipse.emf.compare.command.impl

Class DualCompareCommandStack

java.lang.Object

org.eclipse.emf.compare.command.impl.DualCompareCommandStack

All Implemented Interfaces:

CommandStack, ICompareCommandStack, IDisposable

public class DualCompareCommandStack
extends Object
implements ICompareCommandStack, IDisposable

ICompareCommandStack implementation that will delegates to two given command stacks; one for each side of the comparison.

This implementation is not robust. If an error occurs during execution of a command, the whole state will be corrupted and the undo/redo may have an unknown behavior.

Constructor Summary

Constructors

Constructor	Description
DualCompareCommandStack(BasicCommandStack leftCommandStack, BasicCommandStack rightCommandStack)	Creates an instance that delegates to two given BasicCommandStack.

Method Summary

Modifier and Type	Method	Description
void	addCommandStackListener(CommandStackListener listener)
boolean	canRedo()
boolean	canUndo()
void	dispose()
void	execute(Command command)
void	flush()
Command	getMostRecentCommand()
Command	getRedoCommand()
Command	getUndoCommand()
boolean	isLeftSaveNeeded()	Returns whether the left model has changes since ICompareCommandStack.leftSaveIsDone() was call the last.
boolean	isRightSaveNeeded()	Returns whether the right model has changes since ICompareCommandStack.rightSaveIsDone() was call the last.
void	leftSaveIsDone()	Called after a save of the left model has been successfully performed.
protected void	notifyListeners(Object source)	This is called to ensure that CommandStackListener.commandStackChanged(java.util.EventObject) is called for each listener.
void	redo()
void	removeCommandStackListener(CommandStackListener listener)
void	rightSaveIsDone()	Called after a save of the right model has been successfully performed.
void	undo()

Methods inherited from class java.lang.Object

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

Constructor Details

DualCompareCommandStack

public DualCompareCommandStack(BasicCommandStack leftCommandStack,
 BasicCommandStack rightCommandStack)

Creates an instance that delegates to two given BasicCommandStack.

Parameters:

leftCommandStack - the left command stack.

rightCommandStack - the right command stack.

Method Details

dispose

public void dispose()

Specified by:

dispose in interface IDisposable

See Also:

• IDisposable.dispose()

notifyListeners

protected void notifyListeners(Object source)

This is called to ensure that CommandStackListener.commandStackChanged(java.util.EventObject) is called for each listener.

Parameters:

source - the source of the notification

execute

public void execute(Command command)

Specified by:

execute in interface CommandStack

See Also:

• CommandStack.execute(org.eclipse.emf.common.command.Command)

canUndo

public boolean canUndo()

Specified by:

canUndo in interface CommandStack

See Also:

• CommandStack.canUndo()

undo

public void undo()

Specified by:

undo in interface CommandStack

See Also:

• CommandStack.undo()

canRedo

public boolean canRedo()

Specified by:

canRedo in interface CommandStack

See Also:

• CommandStack.canRedo()

getUndoCommand

public Command getUndoCommand()

Specified by:

getUndoCommand in interface CommandStack

See Also:

• CommandStack.getUndoCommand()

getRedoCommand

public Command getRedoCommand()

Specified by:

getRedoCommand in interface CommandStack

See Also:

• CommandStack.getRedoCommand()

getMostRecentCommand

public Command getMostRecentCommand()

Specified by:

getMostRecentCommand in interface CommandStack

See Also:

• CommandStack.getMostRecentCommand()

redo

public void redo()

Specified by:

redo in interface CommandStack

See Also:

• CommandStack.redo()

flush

public void flush()

Specified by:

flush in interface CommandStack

See Also:

• CommandStack.flush()

addCommandStackListener

public void addCommandStackListener(CommandStackListener listener)

Specified by:

addCommandStackListener in interface CommandStack

See Also:

• CommandStack.addCommandStackListener(org.eclipse.emf.common.command.CommandStackListener)

removeCommandStackListener

public void removeCommandStackListener(CommandStackListener listener)

Specified by:

removeCommandStackListener in interface CommandStack

See Also:

• CommandStack.removeCommandStackListener(org.eclipse.emf.common.command.CommandStackListener)

isLeftSaveNeeded

public boolean isLeftSaveNeeded()

Returns whether the left model has changes since ICompareCommandStack.leftSaveIsDone() was call the last.

Specified by:

isLeftSaveNeeded in interface ICompareCommandStack

Returns:

whether the left model has changes since ICompareCommandStack.leftSaveIsDone() was call the last.

See Also:

• ICompareCommandStack.isLeftSaveNeeded()

isRightSaveNeeded

public boolean isRightSaveNeeded()

Returns whether the right model has changes since ICompareCommandStack.rightSaveIsDone() was call the last.

Specified by:

isRightSaveNeeded in interface ICompareCommandStack

Returns:

whether the right model has changes since ICompareCommandStack.rightSaveIsDone() was call the last.

See Also:

• ICompareCommandStack.isRightSaveNeeded()

leftSaveIsDone

public void leftSaveIsDone()

Called after a save of the left model has been successfully performed.

Specified by:

leftSaveIsDone in interface ICompareCommandStack

See Also:

• ICompareCommandStack.leftSaveIsDone()

rightSaveIsDone

public void rightSaveIsDone()

Called after a save of the right model has been successfully performed.

Specified by:

rightSaveIsDone in interface ICompareCommandStack

See Also:

• ICompareCommandStack.rightSaveIsDone()