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## Command.js

#### Summary

No overview generated for 'Command.js'

Class Summary
draw2d.Command |

    /* This notice must be untouched at all times.

    Open-jACOB Draw2D
    The latest version is available at
    http://www.openjacob.org

    Copyright (c) 2006 Andreas Herz. All rights reserved.
    Created 5. 11. 2006 by Andreas Herz (Web: http://www.freegroup.de )

    LICENSE: LGPL

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License (LGPL) as published by the Free Software Foundation; either
    version 2.1 of the License, or (at your option) any later version.

    This library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public
    License along with this library; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA,
    or see http://www.gnu.org/copyleft/lesser.html
    */

    /**
     * Base class for the undo redo support in the Open-jACOB Draw2d framework.
     *
     * @version 0.9.14
     * @author Andreas Herz
     * @constructor
     */
    draw2d.Command=function(/*:String*/ label)
    {
      this.label = label;
    }

    /** @private **/
    draw2d.Command.prototype.type="Command";

    /**
     * Returns a label of the Command. e.g. "move figure".
     *
     * @final
     **/
    draw2d.Command.prototype.getLabel=function()
    {
    }

    /**
     * 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.
     *
     * @type boolean
     **/
    draw2d.Command.prototype.canExecute=function()
    {
      return true;
    }

    /**
     * Execute the command the first time.
     * Sup-classes must implement this method.
     **/
    draw2d.Command.prototype.execute=function()
    {
    }

    /**
     * Undo the command.
     * Sup-classes must implement this method.
     *
     **/
    draw2d.Command.prototype.undo=function()
    {
    }

    /**
     * Redo the command after the user has undo this command.
     * Sup-classes must implement this method.
     *
     **/
    draw2d.Command.prototype.redo=function()
    {
    }

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Documentation generated by JSDoc on Thu Feb 7 23:45:47 2008