Subversion-Projekte lars-tiefland.cienc

/**
 * ### Massload plugin
 *
 * Adds massload functionality to jsTree, so that multiple nodes can be loaded in a single request (only useful with lazy loading).
 */
/*globals jQuery, define, exports, require, document */
(function (factory) {
        "use strict";
        if (typeof define === 'function' && define.amd) {
                define('jstree.massload', ['jquery','jstree'], factory);
        }
        else if(typeof exports === 'object') {
                factory(require('jquery'), require('jstree'));
        }
        else {
                factory(jQuery, jQuery.jstree);
        }
}(function ($, jstree, undefined) {
        "use strict";

        if($.jstree.plugins.massload) { return; }

        /**
         * massload configuration
         *
         * It is possible to set this to a standard jQuery-like AJAX config.
         * In addition to the standard jQuery ajax options here you can supply functions for `data` and `url`, the functions will be run in the current instance's scope and a param will be passed indicating which node IDs need to be loaded, the return value of those functions will be used.
         *
         * You can also set this to a function, that function will receive the node IDs being loaded as argument and a second param which is a function (callback) which should be called with the result.
         *
         * Both the AJAX and the function approach rely on the same return value - an object where the keys are the node IDs, and the value is the children of that node as an array.
         *
         *      {
         *              "id1" : [{ "text" : "Child of ID1", "id" : "c1" }, { "text" : "Another child of ID1", "id" : "c2" }],
         *              "id2" : [{ "text" : "Child of ID2", "id" : "c3" }]
         *      }
         * 
         * @name $.jstree.defaults.massload
         * @plugin massload
         */
        $.jstree.defaults.massload = null;
        $.jstree.plugins.massload = function (options, parent) {
                this.init = function (el, options) {
                        parent.init.call(this, el, options);
                        this._data.massload = {};
                };
                this._load_nodes = function (nodes, callback, is_callback) {
                        var s = this.settings.massload;
                        if(is_callback && !$.isEmptyObject(this._data.massload)) {
                                return parent._load_nodes.call(this, nodes, callback, is_callback);
                        }
                        if($.isFunction(s)) {
                                return s.call(this, nodes, $.proxy(function (data) {
                                        if(data) {
                                                for(var i in data) {
                                                        if(data.hasOwnProperty(i)) {
                                                                this._data.massload[i] = data[i];
                                                        }
                                                }
                                        }
                                        parent._load_nodes.call(this, nodes, callback, is_callback);
                                }, this));
                        }
                        if(typeof s === 'object' && s && s.url) {
                                s = $.extend(true, {}, s);
                                if($.isFunction(s.url)) {
                                        s.url = s.url.call(this, nodes);
                                }
                                if($.isFunction(s.data)) {
                                        s.data = s.data.call(this, nodes);
                                }
                                return $.ajax(s)
                                        .done($.proxy(function (data,t,x) {
                                                        if(data) {
                                                                for(var i in data) {
                                                                        if(data.hasOwnProperty(i)) {
                                                                                this._data.massload[i] = data[i];
                                                                        }
                                                                }
                                                        }
                                                        parent._load_nodes.call(this, nodes, callback, is_callback);
                                                }, this))
                                        .fail($.proxy(function (f) {
                                                        parent._load_nodes.call(this, nodes, callback, is_callback);
                                                }, this));
                        }
                        return parent._load_nodes.call(this, nodes, callback, is_callback);
                };
                this._load_node = function (obj, callback) {
                        var d = this._data.massload[obj.id];
                        if(d) {
                                return this[typeof d === 'string' ? '_append_html_data' : '_append_json_data'](obj, typeof d === 'string' ? $($.parseHTML(d)).filter(function () { return this.nodeType !== 3; }) : d, function (status) {
                                        callback.call(this, status);
                                        delete this._data.massload[obj.id];
                                });
                        }
                        return parent._load_node.call(this, obj, callback);
                };
        };
}));