wisemapping-open-source/mindplot/src/main/javascript/commands/GenericFunctionCommand.js

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JavaScript
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2009-06-07 20:59:43 +02:00
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* $Id: file 64488 2006-03-10 17:32:09Z paulo $
*/
mindplot.commands.GenericFunctionCommand = mindplot.Command.extend(
{
initialize: function(commandFunc,value,topicsIds)
{
core.assert(commandFunc, "commandFunc must be defined");
core.assert(topicsIds, "topicsIds must be defined");
this._value = value;
this._topicId = topicsIds;
this._commandFunc = commandFunc;
this._oldValues = [];
this._id = mindplot.Command._nextUUID();
},
execute: function(commandContext)
{
if (!this.applied)
{
var topics = commandContext.findTopics(this._topicId);
topics.forEach(function(topic)
{
var oldValue = this._commandFunc(topic, this._value);
this._oldValues.push(oldValue);
}.bind(this));
this.applied = true;
} else
{
throw "Command can not be applied two times in a row.";
}
},
undoExecute: function(commandContext)
{
if (this.applied)
{
var topics = commandContext.findTopics(this._topicId);
topics.forEach(function(topic,index)
{
this._commandFunc(topic, this._oldValues[index]);
}.bind(this));
this.applied = false;
this._oldValues = [];
} else
{
throw "undo can not be applied.";
}
}
});