draw2d.Command

Overview

File

Class

Tree

Index

Help

PREV CLASS NEXT CLASS

FRAMES NO FRAMES

SUMMARY: FIELD | CONSTR | METHOD

DETAIL: FIELD | CONSTR | METHOD

Class draw2d.Command

Object
   |
   +--draw2d.Command

Direct Known Subclasses:: draw2d.CommandMove, draw2d.CommandResize, draw2d.CommandSetText, draw2d.CommandConnect, draw2d.CommandAdd, draw2d.CommandMoveLine, draw2d.CommandSetBackgroundColor, draw2d.CommandDelete, draw2d.CommandSetColor, draw2d.CommandReconnect

class draw2d.Command

Defined in Command.js

Version: 0.9.14

Author: Andreas Herz

Field Summary
`Object`	`label`

Constructor Summary
`draw2d.Command ( label)` Base class for the undo redo support in the Open-jACOB Draw2d framework.

Method Summary
`boolean`	`canExecute()` Returns [true] if the command can be execute and the execution of the command modifies the model.
`void`	`execute()` Execute the command the first time.
`void`	`getLabel()` Returns a label of the Command.
`void`	`redo()` Redo the command after the user has undo this command.
`void`	`undo()` Undo the command.

Field Detail

label

Object label

Constructor Detail

draw2d.Command

draw2d.Command( label)

Base class for the undo redo support in the Open-jACOB Draw2d framework.

Version:

Author:

Method Detail

canExecute

boolean canExecute()

Returns [true] if the command can be execute and the execution of the command modifies the model. e.g.: a CommandMove with [startX,startX] == [endX,endY] should return false. Rhe execution of this Command doesn't modify the model.

execute

void execute()

Execute the command the first time. Sup-classes must implement this method.

getLabel

void getLabel()

Returns a label of the Command. e.g. "move figure".

redo

void redo()

Redo the command after the user has undo this command. Sup-classes must implement this method.

undo

void undo()

Undo the command. Sup-classes must implement this method.