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/*
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2021-12-25 23:39:34 +01:00
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* Copyright [2021] [wisemapping]
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*
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* Licensed under WiseMapping Public License, Version 1.0 (the "License").
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* It is basically the Apache License, Version 2.0 (the "License") plus the
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* "powered by wisemapping" text requirement on every single page;
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the license at
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*
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* http://www.wisemapping.org/license
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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2021-12-05 18:25:16 +01:00
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import { $assert, $defined } from '@wisemapping/core-js';
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2021-12-02 01:41:56 +01:00
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import Command from '../Command';
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import CommandContext from '../CommandContext';
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import Topic from '../Topic';
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class GenericFunctionCommand extends Command {
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private _value: string | object | boolean | number;
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private _topicsId: number[];
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private _commandFunc: (topic: Topic, value: string | object | boolean | number) => string | object | boolean;
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private _oldValues: any[];
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private _applied: boolean;
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constructor(commandFunc: (topic: Topic, value: string | object | boolean) => string | object | boolean, topicsIds: number[], value: string | object | boolean | number = undefined) {
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$assert(commandFunc, 'commandFunc must be defined');
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$assert($defined(topicsIds), 'topicsIds must be defined');
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super();
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this._value = value;
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this._topicsId = topicsIds;
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this._commandFunc = commandFunc;
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this._oldValues = [];
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}
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/**
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* Overrides abstract parent method
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*/
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execute(commandContext: CommandContext) {
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if (!this._applied) {
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const topics = commandContext.findTopics(this._topicsId);
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if (topics != null) {
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const me = this;
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topics.forEach((topic: Topic) => {
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const oldValue = me._commandFunc(topic, me._value);
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me._oldValues.push(oldValue);
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});
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}
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this._applied = true;
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} else {
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throw new Error('Command can not be applied two times in a row.');
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}
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}
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undoExecute(commandContext: CommandContext): void {
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if (this._applied) {
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const topics = commandContext.findTopics(this._topicsId);
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topics.forEach(((topic: Topic, index: number) => {
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this._commandFunc(topic, this._oldValues[index]);
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}));
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this._applied = false;
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this._oldValues = [];
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} else {
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throw new Error('undo can not be applied.');
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}
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}
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}
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export default GenericFunctionCommand;
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