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annotate vakata-jstree-3.3.5/src/jstree.conditionalselect.js @ 2:e08dd15646c6 draft

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author mingchen0919
date Thu, 13 Dec 2018 23:45:31 -0500
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1 /**
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2 * ### Conditionalselect plugin
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3 *
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4 * This plugin allows defining a callback to allow or deny node selection by user input (activate node method).
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5 */
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6 /*globals jQuery, define, exports, require, document */
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7 (function (factory) {
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8 "use strict";
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9 if (typeof define === 'function' && define.amd) {
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10 define('jstree.conditionalselect', ['jquery','jstree'], factory);
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11 }
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12 else if(typeof exports === 'object') {
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13 factory(require('jquery'), require('jstree'));
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14 }
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15 else {
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16 factory(jQuery, jQuery.jstree);
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17 }
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18 }(function ($, jstree, undefined) {
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19 "use strict";
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20
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21 if($.jstree.plugins.conditionalselect) { return; }
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22
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23 /**
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24 * a callback (function) which is invoked in the instance's scope and receives two arguments - the node and the event that triggered the `activate_node` call. Returning false prevents working with the node, returning true allows invoking activate_node. Defaults to returning `true`.
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25 * @name $.jstree.defaults.checkbox.visible
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26 * @plugin checkbox
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27 */
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28 $.jstree.defaults.conditionalselect = function () { return true; };
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29 $.jstree.plugins.conditionalselect = function (options, parent) {
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30 // own function
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31 this.activate_node = function (obj, e) {
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32 if(this.settings.conditionalselect.call(this, this.get_node(obj), e)) {
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33 return parent.activate_node.call(this, obj, e);
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34 }
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35 };
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36 };
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37
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38 }));