Package org.eclipse.nebula.visualization.internal.xygraph.undo

Class ZoomCommand

java.lang.Object

org.eclipse.nebula.visualization.internal.xygraph.undo.SaveStateCommand

org.eclipse.nebula.visualization.internal.xygraph.undo.ZoomCommand

All Implemented Interfaces:

IUndoableCommand

public class ZoomCommand
extends SaveStateCommand

The command for graph zooming and panning.

Author:

Xihui Chen, Kay Kasemir (allow null for x axis)

Constructor Summary

Constructors

Constructor	Description
ZoomCommand(java.lang.String name, java.util.List<Axis> xAxisList, java.util.List<Axis> yAxisList)	Initialize

Method Summary

Modifier and Type	Method	Description
void	redo()	Restore the state of the target to the state after this command has been executed.
void	saveState()	Derived class should implement this to save the 'final' state.
void	undo()	Restore the state of the target to the state before this command has been executed.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from class org.eclipse.nebula.visualization.internal.xygraph.undo.SaveStateCommand

toString

Constructor Detail

ZoomCommand

public ZoomCommand(java.lang.String name,
                   java.util.List<Axis> xAxisList,
                   java.util.List<Axis> yAxisList)

Initialize

Parameters:

name - Name of operation for undo/redo GUI

xAxisList - X Axes to save or null

yAxisList - Y Axes to save

Method Detail

redo

public void redo()

Description copied from interface: IUndoableCommand

Restore the state of the target to the state after this command has been executed.

undo

public void undo()

Description copied from interface: IUndoableCommand

Restore the state of the target to the state before this command has been executed.

saveState

public void saveState()

Description copied from class: SaveStateCommand

Derived class should implement this to save the 'final' state. Might be called multiple times to save intermediate states, and the state saved on the last call would be the 'redo' state.

Specified by:

saveState in class SaveStateCommand