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https://github.com/nasa/openmct.git
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70 lines
2.3 KiB
JavaScript
70 lines
2.3 KiB
JavaScript
/*****************************************************************************
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* Open MCT, Copyright (c) 2014-2017, United States Government
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* as represented by the Administrator of the National Aeronautics and Space
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* Administration. All rights reserved.
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*
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* Open MCT is licensed under the Apache License, Version 2.0 (the
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* "License"); 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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* http://www.apache.org/licenses/LICENSE-2.0.
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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, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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* Open MCT includes source code licensed under additional open source
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* licenses. See the Open Source Licenses file (LICENSES.md) included with
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* this source code distribution or the Licensing information page available
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* at runtime from the About dialog for additional information.
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*****************************************************************************/
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define(['EventEmitter'], function (EventEmitter) {
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/**
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* Manages selection state for Open MCT
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* @private
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*/
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function Selection() {
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EventEmitter.call(this);
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this.selected = [];
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}
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Selection.prototype = Object.create(EventEmitter.prototype);
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Selection.prototype.add = function (context) {
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this.clear(); // Only allow single select as initial simplification
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this.selected.push(context);
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this.emit('change');
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};
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Selection.prototype.remove = function (path) {
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this.selected = this.selected.filter(function (otherPath) {
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return !path.matches(otherPath);
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});
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this.emit('change');
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};
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Selection.prototype.contains = function (path) {
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return this.selected.some(function (otherPath) {
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return path.matches(otherPath);
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});
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};
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Selection.prototype.clear = function () {
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this.selected = [];
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this.emit('change');
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};
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Selection.prototype.primary = function () {
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return this.selected[this.selected.length - 1];
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};
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Selection.prototype.all = function () {
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return this.selected;
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};
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return Selection;
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});
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