jquery.fancytree
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Fancytree is a JavaScript tree view plugin for jQuery with support for persistence, keyboard, checkboxes, drag'n'drop, and lazy loading.
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JavaScript
/*!
* jquery.fancytree.persist.js
*
* Persist tree status in cookiesRemove or highlight tree nodes, based on a filter.
* (Extension module for jquery.fancytree.js: https://github.com/mar10/fancytree/)
*
* @depends: js-cookie or jquery-cookie
*
* Copyright (c) 2008-2017, Martin Wendt (http://wwWendt.de)
*
* Released under the MIT license
* https://github.com/mar10/fancytree/wiki/LicenseInfo
*
* @version 2.22.4
* @date 2017-05-06T06:26:23Z
*/
;(function($, window, document, undefined) {
;
/* global Cookies:false */
/*******************************************************************************
* Private functions and variables
*/
var cookieGetter, cookieRemover, cookieSetter,
_assert = $.ui.fancytree.assert,
ACTIVE = "active",
EXPANDED = "expanded",
FOCUS = "focus",
SELECTED = "selected";
if( typeof Cookies === "function" ) {
// Assume https://github.com/js-cookie/js-cookie
cookieSetter = Cookies.set;
cookieGetter = Cookies.get;
cookieRemover = Cookies.remove;
} else {
// Fall back to https://github.com/carhartl/jquery-cookie
cookieSetter = cookieGetter = $.cookie;
cookieRemover = $.removeCookie;
}
/* Recursively load lazy nodes
* @param {string} mode 'load', 'expand', false
*/
function _loadLazyNodes(tree, local, keyList, mode, dfd) {
var i, key, l, node,
foundOne = false,
expandOpts = tree.options.persist.expandOpts,
deferredList = [],
missingKeyList = [];
keyList = keyList || [];
dfd = dfd || $.Deferred();
for( i=0, l=keyList.length; i<l; i++ ) {
key = keyList[i];
node = tree.getNodeByKey(key);
if( node ) {
if( mode && node.isUndefined() ) {
foundOne = true;
tree.debug("_loadLazyNodes: " + node + " is lazy: loading...");
if( mode === "expand" ) {
deferredList.push(node.setExpanded(true, expandOpts));
} else {
deferredList.push(node.load());
}
} else {
tree.debug("_loadLazyNodes: " + node + " already loaded.");
node.setExpanded(true, expandOpts);
}
} else {
missingKeyList.push(key);
tree.debug("_loadLazyNodes: " + node + " was not yet found.");
}
}
$.when.apply($, deferredList).always(function(){
// All lazy-expands have finished
if( foundOne && missingKeyList.length > 0 ) {
// If we read new nodes from server, try to resolve yet-missing keys
_loadLazyNodes(tree, local, missingKeyList, mode, dfd);
} else {
if( missingKeyList.length ) {
tree.warn("_loadLazyNodes: could not load those keys: ", missingKeyList);
for( i=0, l=missingKeyList.length; i<l; i++ ) {
key = keyList[i];
local._appendKey(EXPANDED, keyList[i], false);
}
}
dfd.resolve();
}
});
return dfd;
}
/**
* [ext-persist] Remove persistence cookies of the given type(s).
* Called like
* $("#tree").fancytree("getTree").clearCookies("active expanded focus selected");
*
* @alias Fancytree#clearCookies
* @requires jquery.fancytree.persist.js
*/
$.ui.fancytree._FancytreeClass.prototype.clearCookies = function(types){
var local = this.ext.persist,
prefix = local.cookiePrefix;
types = types || "active expanded focus selected";
if(types.indexOf(ACTIVE) >= 0){
local._data(prefix + ACTIVE, null);
}
if(types.indexOf(EXPANDED) >= 0){
local._data(prefix + EXPANDED, null);
}
if(types.indexOf(FOCUS) >= 0){
local._data(prefix + FOCUS, null);
}
if(types.indexOf(SELECTED) >= 0){
local._data(prefix + SELECTED, null);
}
};
/**
* [ext-persist] Return persistence information from cookies
*
* Called like
* $("#tree").fancytree("getTree").getPersistData();
*
* @alias Fancytree#getPersistData
* @requires jquery.fancytree.persist.js
*/
$.ui.fancytree._FancytreeClass.prototype.getPersistData = function(){
var local = this.ext.persist,
prefix = local.cookiePrefix,
delim = local.cookieDelimiter,
res = {};
res[ACTIVE] = local._data(prefix + ACTIVE);
res[EXPANDED] = (local._data(prefix + EXPANDED) || "").split(delim);
res[SELECTED] = (local._data(prefix + SELECTED) || "").split(delim);
res[FOCUS] = local._data(prefix + FOCUS);
return res;
};
/* *****************************************************************************
* Extension code
*/
$.ui.fancytree.registerExtension({
name: "persist",
version: "2.22.4",
// Default options for this extension.
options: {
cookieDelimiter: "~",
cookiePrefix: undefined, // 'fancytree-<treeId>-' by default
cookie: {
raw: false,
expires: "",
path: "",
domain: "",
secure: false
},
expandLazy: false, // true: recursively expand and load lazy nodes
expandOpts: undefined, // optional `opts` argument passed to setExpanded()
fireActivate: true, // false: suppress `activate` event after active node was restored
overrideSource: true, // true: cookie takes precedence over `source` data attributes.
store: "auto", // 'cookie': force cookie, 'local': force localStore, 'session': force sessionStore
types: "active expanded focus selected"
},
/* Generic read/write string data to cookie, sessionStorage or localStorage. */
_data: function(key, value){
var ls = this._local.localStorage; // null, sessionStorage, or localStorage
if( value === undefined ) {
return ls ? ls.getItem(key) : cookieGetter(key);
} else if ( value === null ) {
if( ls ) {
ls.removeItem(key);
} else {
cookieRemover(key);
}
} else {
if( ls ) {
ls.setItem(key, value);
} else {
cookieSetter(key, value, this.options.persist.cookie);
}
}
},
/* Append `key` to a cookie. */
_appendKey: function(type, key, flag){
key = "" + key; // #90
var local = this._local,
instOpts = this.options.persist,
delim = instOpts.cookieDelimiter,
cookieName = local.cookiePrefix + type,
data = local._data(cookieName),
keyList = data ? data.split(delim) : [],
idx = $.inArray(key, keyList);
// Remove, even if we add a key, so the key is always the last entry
if(idx >= 0){
keyList.splice(idx, 1);
}
// Append key to cookie
if(flag){
keyList.push(key);
}
local._data(cookieName, keyList.join(delim));
},
treeInit: function(ctx){
var tree = ctx.tree,
opts = ctx.options,
local = this._local,
instOpts = this.options.persist;
// For 'auto' or 'cookie' mode, the cookie plugin must be available
_assert((instOpts.store !== "auto" && instOpts.store !== "cookie") || cookieGetter,
"Missing required plugin for 'persist' extension: js.cookie.js or jquery.cookie.js");
local.cookiePrefix = instOpts.cookiePrefix || ("fancytree-" + tree._id + "-");
local.storeActive = instOpts.types.indexOf(ACTIVE) >= 0;
local.storeExpanded = instOpts.types.indexOf(EXPANDED) >= 0;
local.storeSelected = instOpts.types.indexOf(SELECTED) >= 0;
local.storeFocus = instOpts.types.indexOf(FOCUS) >= 0;
if( instOpts.store === "cookie" || !window.localStorage ) {
local.localStorage = null;
} else {
local.localStorage = (instOpts.store === "local") ? window.localStorage : window.sessionStorage;
}
// Bind init-handler to apply cookie state
tree.$div.bind("fancytreeinit", function(event){
if ( tree._triggerTreeEvent("beforeRestore", null, {}) === false ) {
return;
}
var cookie, dfd, i, keyList, node,
prevFocus = local._data(local.cookiePrefix + FOCUS), // record this before node.setActive() overrides it;
noEvents = instOpts.fireActivate === false;
// tree.debug("document.cookie:", document.cookie);
cookie = local._data(local.cookiePrefix + EXPANDED);
keyList = cookie && cookie.split(instOpts.cookieDelimiter);
if( local.storeExpanded ) {
// Recursively load nested lazy nodes if expandLazy is 'expand' or 'load'
// Also remove expand-cookies for unmatched nodes
dfd = _loadLazyNodes(tree, local, keyList, instOpts.expandLazy ? "expand" : false , null);
} else {
// nothing to do
dfd = new $.Deferred().resolve();
}
dfd.done(function(){
if(local.storeSelected){
cookie = local._data(local.cookiePrefix + SELECTED);
if(cookie){
keyList = cookie.split(instOpts.cookieDelimiter);
for(i=0; i<keyList.length; i++){
node = tree.getNodeByKey(keyList[i]);
if(node){
if(node.selected === undefined || instOpts.overrideSource && (node.selected === false)){
// node.setSelected();
node.selected = true;
node.renderStatus();
}
}else{
// node is no longer member of the tree: remove from cookie also
local._appendKey(SELECTED, keyList[i], false);
}
}
}
// In selectMode 3 we have to fix the child nodes, since we
// only stored the selected *top* nodes
if( tree.options.selectMode === 3 ){
tree.visit(function(n){
if( n.selected ) {
n.fixSelection3AfterClick();
return "skip";
}
});
}
}
if(local.storeActive){
cookie = local._data(local.cookiePrefix + ACTIVE);
if(cookie && (opts.persist.overrideSource || !tree.activeNode)){
node = tree.getNodeByKey(cookie);
if(node){
node.debug("persist: set active", cookie);
// We only want to set the focus if the container
// had the keyboard focus before
node.setActive(true, {
noFocus: true,
noEvents: noEvents
});
}
}
}
if(local.storeFocus && prevFocus){
node = tree.getNodeByKey(prevFocus);
if(node){
// node.debug("persist: set focus", cookie);
if( tree.options.titlesTabbable ) {
$(node.span).find(".fancytree-title").focus();
} else {
$(tree.$container).focus();
}
// node.setFocus();
}
}
tree._triggerTreeEvent("restore", null, {});
});
});
// Init the tree
return this._superApply(arguments);
},
nodeSetActive: function(ctx, flag, callOpts) {
var res,
local = this._local;
flag = (flag !== false);
res = this._superApply(arguments);
if(local.storeActive){
local._data(local.cookiePrefix + ACTIVE, this.activeNode ? this.activeNode.key : null);
}
return res;
},
nodeSetExpanded: function(ctx, flag, callOpts) {
var res,
node = ctx.node,
local = this._local;
flag = (flag !== false);
res = this._superApply(arguments);
if(local.storeExpanded){
local._appendKey(EXPANDED, node.key, flag);
}
return res;
},
nodeSetFocus: function(ctx, flag) {
var res,
local = this._local;
flag = (flag !== false);
res = this._superApply(arguments);
if( local.storeFocus ) {
local._data(local.cookiePrefix + FOCUS, this.focusNode ? this.focusNode.key : null);
}
return res;
},
nodeSetSelected: function(ctx, flag) {
var res, selNodes,
tree = ctx.tree,
node = ctx.node,
local = this._local;
flag = (flag !== false);
res = this._superApply(arguments);
if(local.storeSelected){
if( tree.options.selectMode === 3 ){
// In selectMode 3 we only store the the selected *top* nodes.
// De-selecting a node may also de-select some parents, so we
// calculate the current status again
selNodes = $.map(tree.getSelectedNodes(true), function(n){
return n.key;
});
selNodes = selNodes.join(ctx.options.persist.cookieDelimiter);
local._data(local.cookiePrefix + SELECTED, selNodes);
} else {
// beforeSelect can prevent the change - flag doesn't reflect the node.selected state
local._appendKey(SELECTED, node.key, node.selected);
}
}
return res;
}
});
}(jQuery, window, document));