wisemapping-frontend/packages/mindplot/lib/components/commands/GenericFunctionCommand.js

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/*
* Copyright [2015] [wisemapping]
*
* Licensed under WiseMapping Public License, Version 1.0 (the "License").
* It is basically the Apache License, Version 2.0 (the "License") plus the
* "powered by wisemapping" text requirement on every single page;
* you may not use this file except in compliance with the License.
* You may obtain a copy of the license at
*
* http://www.wisemapping.org/license
*
* 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.
*/
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const Command = require('../Command').default;
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const GenericFunctionCommand = new Class(/** @lends GenericFunctionCommand */{
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Extends: Command,
/**
* @classdesc This command handles do/undo of different actions, e.g. moving topics to
* a different position, changing text or font,... (for full reference check the
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* StandaloneActionDispatcher i.e. the ActionDispatcher subclass in use)
* @constructs
* @param {Function} commandFunc the function the command shall execute
* @param {String|Array<String>} topicsIds the ids of the topics affected
* @param {Object} [value] value arbitrary value necessary for the execution of the function,
* e.g. color, font family or text
* @extends mindplot.Command
*/
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initialize(commandFunc, topicsIds, value) {
$assert(commandFunc, 'commandFunc must be defined');
$assert($defined(topicsIds), 'topicsIds must be defined');
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this.parent();
this._value = value;
this._topicsId = topicsIds;
this._commandFunc = commandFunc;
this._oldValues = [];
},
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/**
* Overrides abstract parent method
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*/
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execute(commandContext) {
if (!this.applied) {
let topics = null;
try {
topics = commandContext.findTopics(this._topicsId);
} catch (e) {
if (this._commandFunc.commandType != 'changeTextToTopic') {
// Workaround: For some reason, there is a combination of events that involves
// making some modification and firing out of focus event. This is causing
// that a remove node try to be removed. In some other life, I will come with the solution.
// Almost aways occurs with IE9. I could be related with some change of order in sets o something similar.
throw e;
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}
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}
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if (topics != null) {
const me = this;
_.each(topics, (topic) => {
const oldValue = me._commandFunc(topic, me._value);
me._oldValues.push(oldValue);
});
}
this.applied = true;
} else {
throw 'Command can not be applied two times in a row.';
}
},
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/**
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* Overrides abstract parent method
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* @see {@link mindplot.Command.undoExecute}
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*/
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undoExecute(commandContext) {
if (this.applied) {
const topics = commandContext.findTopics(this._topicsId);
const me = this;
_.each(topics, (topic, index) => {
me._commandFunc(topic, me._oldValues[index]);
});
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this.applied = false;
this._oldValues = [];
} else {
throw 'undo can not be applied.';
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}
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},
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});
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export default GenericFunctionCommand;