Mercurial > repos > mingchen0919 > aurora_htseq
diff vakata-jstree-3.3.5/src/jstree.state.js @ 0:803f4888f36a draft
planemo upload commit 004a320fc0619c234164b44c64ba5dce205734e1
author | mingchen0919 |
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date | Thu, 13 Dec 2018 22:46:23 -0500 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/vakata-jstree-3.3.5/src/jstree.state.js Thu Dec 13 22:46:23 2018 -0500 @@ -0,0 +1,138 @@ +/** + * ### State plugin + * + * Saves the state of the tree (selected nodes, opened nodes) on the user's computer using available options (localStorage, cookies, etc) + */ +/*globals jQuery, define, exports, require */ +(function (factory) { + "use strict"; + if (typeof define === 'function' && define.amd) { + define('jstree.state', ['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.state) { return; } + + var to = false; + /** + * stores all defaults for the state plugin + * @name $.jstree.defaults.state + * @plugin state + */ + $.jstree.defaults.state = { + /** + * A string for the key to use when saving the current tree (change if using multiple trees in your project). Defaults to `jstree`. + * @name $.jstree.defaults.state.key + * @plugin state + */ + key : 'jstree', + /** + * A space separated list of events that trigger a state save. Defaults to `changed.jstree open_node.jstree close_node.jstree`. + * @name $.jstree.defaults.state.events + * @plugin state + */ + events : 'changed.jstree open_node.jstree close_node.jstree check_node.jstree uncheck_node.jstree', + /** + * Time in milliseconds after which the state will expire. Defaults to 'false' meaning - no expire. + * @name $.jstree.defaults.state.ttl + * @plugin state + */ + ttl : false, + /** + * A function that will be executed prior to restoring state with one argument - the state object. Can be used to clear unwanted parts of the state. + * @name $.jstree.defaults.state.filter + * @plugin state + */ + filter : false, + /** + * Should loaded nodes be restored (setting this to true means that it is possible that the whole tree will be loaded for some users - use with caution). Defaults to `false` + * @name $.jstree.defaults.state.preserve_loaded + * @plugin state + */ + preserve_loaded : false + }; + $.jstree.plugins.state = function (options, parent) { + this.bind = function () { + parent.bind.call(this); + var bind = $.proxy(function () { + this.element.on(this.settings.state.events, $.proxy(function () { + if(to) { clearTimeout(to); } + to = setTimeout($.proxy(function () { this.save_state(); }, this), 100); + }, this)); + /** + * triggered when the state plugin is finished restoring the state (and immediately after ready if there is no state to restore). + * @event + * @name state_ready.jstree + * @plugin state + */ + this.trigger('state_ready'); + }, this); + this.element + .on("ready.jstree", $.proxy(function (e, data) { + this.element.one("restore_state.jstree", bind); + if(!this.restore_state()) { bind(); } + }, this)); + }; + /** + * save the state + * @name save_state() + * @plugin state + */ + this.save_state = function () { + var tm = this.get_state(); + if (!this.settings.state.preserve_loaded) { + delete tm.core.loaded; + } + var st = { 'state' : tm, 'ttl' : this.settings.state.ttl, 'sec' : +(new Date()) }; + $.vakata.storage.set(this.settings.state.key, JSON.stringify(st)); + }; + /** + * restore the state from the user's computer + * @name restore_state() + * @plugin state + */ + this.restore_state = function () { + var k = $.vakata.storage.get(this.settings.state.key); + if(!!k) { try { k = JSON.parse(k); } catch(ex) { return false; } } + if(!!k && k.ttl && k.sec && +(new Date()) - k.sec > k.ttl) { return false; } + if(!!k && k.state) { k = k.state; } + if(!!k && $.isFunction(this.settings.state.filter)) { k = this.settings.state.filter.call(this, k); } + if(!!k) { + if (!this.settings.state.preserve_loaded) { + delete k.core.loaded; + } + this.element.one("set_state.jstree", function (e, data) { data.instance.trigger('restore_state', { 'state' : $.extend(true, {}, k) }); }); + this.set_state(k); + return true; + } + return false; + }; + /** + * clear the state on the user's computer + * @name clear_state() + * @plugin state + */ + this.clear_state = function () { + return $.vakata.storage.del(this.settings.state.key); + }; + }; + + (function ($, undefined) { + $.vakata.storage = { + // simply specifying the functions in FF throws an error + set : function (key, val) { return window.localStorage.setItem(key, val); }, + get : function (key) { return window.localStorage.getItem(key); }, + del : function (key) { return window.localStorage.removeItem(key); } + }; + }($)); + + // include the state plugin by default + // $.jstree.defaults.plugins.push("state"); +})); \ No newline at end of file