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

Class CompareCommandStack

java.lang.Object

com.google.common.collect.ForwardingObject

org.eclipse.emf.compare.command.DelegatingCommandStack

org.eclipse.emf.compare.command.impl.CompareCommandStack

All Implemented Interfaces:

CommandStack, ICompareCommandStack, IDisposable

public class CompareCommandStack
extends DelegatingCommandStack
implements ICompareCommandStack, IDisposable

A simple ICompareCommandStack that delegate execution to another command stack but keep informations about execution to properly reply to ICompareCommandStack protocol.

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.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	CompareCommandStack.CompareSideCommandStack	Simple data structure acting like a command stack but without any execution capability.

Constructor Summary

Constructors

Constructor	Description
CompareCommandStack(CommandStack commandStack)	Creates a new instance that delegates to the given commandStack.

Method Summary

Modifier and Type	Method	Description
protected CommandStack	delegate()	Returns the backing delegate instance that methods are forwarded to.
void	dispose()
void	execute(Command command)
void	flush()
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.
void	redo()
void	rightSaveIsDone()	Called after a save of the right model has been successfully performed.
void	undo()

Methods inherited from class org.eclipse.emf.compare.command.DelegatingCommandStack

addCommandStackListener, canRedo, canUndo, getMostRecentCommand, getRedoCommand, getUndoCommand, notifyListeners, removeCommandStackListener

Methods inherited from class com.google.common.collect.ForwardingObject

toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.eclipse.emf.common.command.CommandStack

addCommandStackListener, canRedo, canUndo, getMostRecentCommand, getRedoCommand, getUndoCommand, removeCommandStackListener

Constructor Details

CompareCommandStack

public CompareCommandStack(CommandStack commandStack)

Creates a new instance that delegates to the given commandStack.

Parameters:

commandStack - the command stack to which this instance will delegate.

Method Details

dispose

public void dispose()

Specified by:

dispose in interface IDisposable

See Also:

• IDisposable.dispose()

delegate

protected CommandStack delegate()

Returns the backing delegate instance that methods are forwarded to.

Specified by:

delegate in class DelegatingCommandStack

Returns:

the backing delegate instance that methods are forwarded to.

See Also:

• DelegatingCommandStack.delegate()

execute

public void execute(Command command)

Specified by:

execute in interface CommandStack

Overrides:

execute in class DelegatingCommandStack

See Also:

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

undo

public void undo()

Specified by:

undo in interface CommandStack

Overrides:

undo in class DelegatingCommandStack

See Also:

• BasicCommandStack.undo()

redo

public void redo()

Specified by:

redo in interface CommandStack

Overrides:

redo in class DelegatingCommandStack

See Also:

• BasicCommandStack.redo()

flush

public void flush()

Specified by:

flush in interface CommandStack

Overrides:

flush in class DelegatingCommandStack

See Also:

• CommandStack.flush()

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()