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Name File: mootree-uncompressed.js
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/* Script: mootree.js My Object Oriented Tree - Developed by Rasmus Schultz, <http://www.mindplay.dk> - Tested with MooTools release 1.2, under Firefox 2, Opera 9 and Internet Explorer 6 and 7. License: MIT-style license. Credits: Inspired by: - WebFX xTree, <http://webfx.eae.net/dhtml/xtree/> - Destroydrop dTree, <http://www.destroydrop.com/javascripts/tree/> Changes: rev.12: - load() only worked once on the same node, fixed. - the script would sometimes try to get 'R' from the server, fixed. - the 'load' attribute is now supported in XML files (see example_5.html). rev.13: - enable() and disable() added - the adopt() and load() methods use these to improve performance by minimizing the number of visual updates. rev.14: - toggle() was using enable() and disable() which actually caused it to do extra work - fixed. rev.15: - adopt() now picks up 'href', 'target', 'title' and 'name' attributes of the a-tag, and stores them in the data object. - adopt() now picks up additional constructor arguments from embedded comments, e.g. icons, colors, etc. - documentation now generates properly with NaturalDocs, <http://www.naturaldocs.org/> rev.16: - onClick events added to MooTreeControl and MooTreeNode - nodes can now have id's - <MooTreeControl.get> method can be used to find a node with a given id rev.17: - changed icon rendering to use innerHTML, making the control faster (and code size slightly smaller). rev.18: - migrated to MooTools 1.2 (previous versions no longer supported) */ var MooTreeIcon = ['I','L','Lminus','Lplus','Rminus','Rplus','T','Tminus','Tplus','_closed','_doc','_open','minus','plus']; /* Class: MooTreeControl This class implements a tree control. Properties: root - returns the root <MooTreeNode> object. selected - returns the currently selected <MooTreeNode> object, or null if nothing is currently selected. Events: onExpand - called when a node is expanded or collapsed: function(node, state) - where node is the <MooTreeNode> object that fired the event, and state is a boolean meaning true:expanded or false:collapsed. onSelect - called when a node is selected or deselected: function(node, state) - where node is the <MooTreeNode> object that fired the event, and state is a boolean meaning true:selected or false:deselected. onClick - called when a node is clicked: function(node) - where node is the <MooTreeNode> object that fired the event. Parameters: The constructor takes two object parameters: config and options. The first, config, contains global settings for the tree control - you can use the configuration options listed below. The second, options, should contain options for the <MooTreeNode> constructor - please refer to the options listed in the <MooTreeNode> documentation. Config: div - a string representing the div Element inside which to build the tree control. mode - optional string, defaults to 'files' - specifies default icon behavior. In 'files' mode, empty nodes have a document icon - whereas, in 'folders' mode, all nodes are displayed as folders (a'la explorer). grid - boolean, defaults to false. If set to true, a grid is drawn to outline the structure of the tree. theme - string, optional, defaults to 'mootree.gif' - specifies the 'theme' GIF to use. loader - optional, an options object for the <MooTreeNode> constructor - defaults to {icon:'mootree_loader.gif', text:'Loading...', color:'a0a0a0'} onExpand - optional function (see Events above) onSelect - optional function (see Events above) */ var MooTreeControl = new Class({ initialize: function(config, options) { options.control = this; // make sure our new MooTreeNode knows who it's owner control is options.div = config.div; // tells the root node which div to insert itself into this.root = new MooTreeNode(options); // create the root node of this tree control this.index = new Object(); // used by the get() method this.enabled = true; // enable visual updates of the control this.theme = config.theme || 'mootree.gif'; this.loader = config.loader || {icon:'mootree_loader.gif', text:'Loading...', color:'#a0a0a0'}; this.selected = null; // set the currently selected node to nothing this.mode = config.mode; // mode can be "folders" or "files", and affects the default icons this.grid = config.grid; // grid can be turned on (true) or off (false) this.onExpand = config.onExpand || new Function(); // called when any node in the tree is expanded/collapsed this.onSelect = config.onSelect || new Function(); // called when any node in the tree is selected/deselected this.onClick = config.onClick || new Function(); // called when any node in the tree is clicked this.root.update(true); }, /* Property: insert Creates a new node under the root node of this tree. Parameters: options - an object containing the same options available to the <MooTreeNode> constructor. Returns: A new <MooTreeNode> instance. */ insert: function(options) { options.control = this; return this.root.insert(options); }, /* Property: select Sets the currently selected node. This is called by <MooTreeNode> when a node is selected (e.g. by clicking it's title with the mouse). Parameters: node - the <MooTreeNode> object to select. */ select: function(node) { this.onClick(node); node.onClick(); // fire click events if (this.selected === node) return; // already selected if (this.selected) { // deselect previously selected node: this.selected.select(false); this.onSelect(this.selected, false); } // select new node: this.selected = node; node.select(true); this.onSelect(node, true); }, /* Property: expand Expands the entire tree, recursively. */ expand: function() { this.root.toggle(true, true); }, /* Property: collapse Collapses the entire tree, recursively. */ collapse: function() { this.root.toggle(true, false); }, /* Property: get Retrieves the node with the given id - or null, if no node with the given id exists. Parameters: id - a string, the id of the node you wish to retrieve. Note: Node id can be assigned via the <MooTreeNode> constructor, e.g. using the <MooTreeNode.insert> method. */ get: function(id) { return this.index[id] || null; }, /* Property: adopt Adopts a structure of nested ul/li/a elements as tree nodes, then removes the original elements. Parameters: id - a string representing the ul element to be adopted, or an element reference. parentNode - optional, a <MooTreeNode> object under which to import the specified ul element. Defaults to the root node of the parent control. Note: The ul/li structure must be properly nested, and each li-element must contain one a-element, e.g.: ><ul id="mytree"> > <li><a href="test.html">Item One</a></li> > <li><a href="test.html">Item Two</a> > <ul> > <li><a href="test.html">Item Two Point One</a></li> > <li><a href="test.html">Item Two Point Two</a></li> > </ul> > </li> > <li><a href="test.html"><!-- icon:_doc; color:#ff0000 -->Item Three</a></li> ></ul> The "href", "target", "title" and "name" attributes of the a-tags are picked up and stored in the data property of the node. CSS-style comments inside a-tags are parsed, and treated as arguments for <MooTreeNode> constructor, e.g. "icon", "openicon", "color", etc. */ adopt: function(id, parentNode) { if (parentNode === undefined) parentNode = this.root; this.disable(); this._adopt(id, parentNode); parentNode.update(true); document.id(id).destroy(); this.enable(); }, _adopt: function(id, parentNode) { /* adopts a structure of ul/li elements into this tree */ e = document.id(id); var i=0, c = e.getChildren(); for (i=0; i<c.length; i++) { if (c[i].nodeName == 'LI') { var con={text:''}, comment='', node=null, subul=null; var n=0, z=0, se=null, s = c[i].getChildren(); for (n=0; n<s.length; n++) { switch (s[n].nodeName) { case 'A': for (z=0; z<s[n].childNodes.length; z++) { se = s[n].childNodes[z]; switch (se.nodeName) { case '#text': con.text += se.nodeValue; break; case '#comment': comment += se.nodeValue; break; } } con.data = s[n].getProperties('href','target','title','name'); break; case 'UL': subul = s[n]; break; } } if (con.label != '') { con.data.url = con.data['href']; // (for backwards compatibility) if (comment != '') { var bits = comment.split(';'); for (z=0; z<bits.length; z++) { var pcs = bits[z].trim().split(':'); if (pcs.length == 2) con[pcs[0].trim()] = pcs[1].trim(); } } if (c[i].id != null) { con.id = 'node_'+c[i].id; } node = parentNode.insert(con); if (subul) this._adopt(subul, node); } } } }, /* Property: disable Call this to temporarily disable visual updates -- if you need to insert/remove many nodes at a time, many visual updates would normally occur. By temporarily disabling the control, these visual updates will be skipped. When you're done making changes, call <MooTreeControl.enable> to turn on visual updates again, and automatically repaint all nodes that were changed. */ disable: function() { this.enabled = false; }, /* Property: enable Enables visual updates again after a call to <MooTreeControl.disable> */ enable: function() { this.enabled = true; this.root.update(true, true); } }); /* Class: MooTreeNode This class implements the functionality of a single node in a <MooTreeControl>. Note: You should not manually create objects of this class -- rather, you should use <MooTreeControl.insert> to create nodes in the root of the tree, and then use the similar function <MooTreeNode.insert> to create subnodes. Both insert methods have a similar syntax, and both return the newly created <MooTreeNode> object. Parameters: options - an object. See options below. Options: text - this is the displayed text of the node, and as such as is the only required parameter. id - string, optional - if specified, must be a unique node identifier. Nodes with id can be retrieved using the <MooTreeControl.get> method. color - string, optional - if specified, must be a six-digit hexadecimal RGB color code. open - boolean value, defaults to false. Use true if you want the node open from the start. icon - use this to customize the icon of the node. The following predefined values may be used: '_open', '_closed' and '_doc'. Alternatively, specify the URL of a GIF or PNG image to use - this should be exactly 18x18 pixels in size. If you have a strip of images, you can specify an image number (e.g. 'my_icons.gif#4' for icon number 4). openicon - use this to customize the icon of the node when it's open. data - an object containing whatever data you wish to associate with this node (such as an url and/or an id, etc.) Events: onExpand - called when the node is expanded or collapsed: function(state) - where state is a boolean meaning true:expanded or false:collapsed. onSelect - called when the node is selected or deselected: function(state) - where state is a boolean meaning true:selected or false:deselected. onClick - called when the node is clicked (no arguments). */ var MooTreeNode = new Class({ initialize: function(options) { this.text = options.text; // the text displayed by this node this.id = options.id || null; // the node's unique id this.nodes = new Array(); // subnodes nested beneath this node (MooTreeNode objects) this.parent = null; // this node's parent node (another MooTreeNode object) this.last = true; // a flag telling whether this node is the last (bottom) node of it's parent this.control = options.control; // owner control of this node's tree this.selected = false; // a flag telling whether this node is the currently selected node in it's tree this.color = options.color || null; // text color of this node this.data = options.data || {}; // optional object containing whatever data you wish to associate with the node (typically an url or an id) this.onExpand = options.onExpand || new Function(); // called when the individual node is expanded/collapsed this.onSelect = options.onSelect || new Function(); // called when the individual node is selected/deselected this.onClick = options.onClick || new Function(); // called when the individual node is clicked this.open = options.open ? true : false; // flag: node open or closed? this.icon = options.icon; this.openicon = options.openicon || this.icon; // add the node to the control's node index: if (this.id) this.control.index[this.id] = this; // create the necessary divs: this.div = { main: new Element('div').addClass('mooTree_node'), indent: new Element('div'), gadget: new Element('div'), icon: new Element('div'), text: new Element('div').addClass('mooTree_text'), sub: new Element('div') } // put the other divs under the main div: this.div.main.adopt(this.div.indent); this.div.main.adopt(this.div.gadget); this.div.main.adopt(this.div.icon); this.div.main.adopt(this.div.text); // put the main and sub divs in the specified parent div: document.id(options.div).adopt(this.div.main); document.id(options.div).adopt(this.div.sub); // attach event handler to gadget: this.div.gadget._node = this; this.div.gadget.onclick = this.div.gadget.ondblclick = function() { this._node.toggle(); } // attach event handler to icon/text: this.div.icon._node = this.div.text._node = this; this.div.icon.onclick = this.div.icon.ondblclick = this.div.text.onclick = this.div.text.ondblclick = function() { this._node.control.select(this._node); } }, /* Property: insert Creates a new node, nested inside this one. Parameters: options - an object containing the same options available to the <MooTreeNode> constructor. Returns: A new <MooTreeNode> instance. */ insert: function(options) { // set the parent div and create the node: options.div = this.div.sub; options.control = this.control; var node = new MooTreeNode(options); // set the new node's parent: node.parent = this; // mark this node's last node as no longer being the last, then add the new last node: var n = this.nodes; if (n.length) n[n.length-1].last = false; n.push(node); // repaint the new node: node.update(); // repaint the new node's parent (this node): if (n.length == 1) this.update(); // recursively repaint the new node's previous sibling node: if (n.length > 1) n[n.length-2].update(true); return node; }, /* Property: remove Removes this node, and all of it's child nodes. If you want to remove all the childnodes without removing the node itself, use <MooTreeNode.clear> */ remove: function() { var p = this.parent; this._remove(); p.update(true); }, _remove: function() { // recursively remove this node's subnodes: var n = this.nodes; while (n.length) n[n.length-1]._remove(); // remove the node id from the control's index: delete this.control.index[this.id]; // remove this node's divs: this.div.main.destroy(); this.div.sub.destroy(); if (this.parent) { // remove this node from the parent's collection of nodes: var p = this.parent.nodes; p.erase(this); // in case we removed the parent's last node, flag it's current last node as being the last: if (p.length) p[p.length-1].last = true; } }, /* Property: clear Removes all child nodes under this node, without removing the node itself. To remove all nodes including this one, use <MooTreeNode.remove> */ clear: function() { this.control.disable(); while (this.nodes.length) this.nodes[this.nodes.length-1].remove(); this.control.enable(); }, /* Property: update Update the tree node's visual appearance. Parameters: recursive - boolean, defaults to false. If true, recursively updates all nodes beneath this one. invalidated - boolean, defaults to false. If true, updates only nodes that have been invalidated while the control has been disabled. */ update: function(recursive, invalidated) { var draw = true; if (!this.control.enabled) { // control is currently disabled, so we don't do any visual updates this.invalidated = true; draw = false; } if (invalidated) { if (!this.invalidated) { draw = false; // this one is still valid, don't draw } else { this.invalidated = false; // we're drawing this item now } } if (draw) { var x; // make selected, or not: this.div.main.className = 'mooTree_node' + (this.selected ? ' mooTree_selected' : ''); // update indentations: var p = this, i = ''; while (p.parent) { p = p.parent; i = this.getImg(p.last || !this.control.grid ? '' : 'I') + i; } this.div.indent.innerHTML = i; // update the text: x = this.div.text; x.empty(); x.appendText(this.text); if (this.color) x.style.color = this.color; // update the icon: this.div.icon.innerHTML = this.getImg( this.nodes.length ? ( this.open ? (this.openicon || this.icon || '_open') : (this.icon || '_closed') ) : ( this.icon || (this.control.mode == 'folders' ? '_closed' : '_doc') ) ); // update the plus/minus gadget: this.div.gadget.innerHTML = this.getImg( ( this.control.grid ? ( this.control.root == this ? (this.nodes.length ? 'R' : '') : (this.last?'L':'T') ) : '') + (this.nodes.length ? (this.open?'minus':'plus') : '') ); // show/hide subnodes: this.div.sub.style.display = this.open ? 'block' : 'none'; } // if recursively updating, update all child nodes: if (recursive) this.nodes.forEach( function(node) { node.update(true, invalidated); }); }, /* Property: getImg Creates a new image, in the form of HTML for a DIV element with appropriate style. You should not need to manually call this method. (though if for some reason you want to, you can) Parameters: name - the name of new image to create, defined by <MooTreeIcon> or located in an external file. Returns: The HTML for a new div Element. */ getImg: function(name) { var html = '<div class="mooTree_img"'; if (name != '') { var img = this.control.theme; var i = MooTreeIcon.indexOf(name); if (i == -1) { // custom (external) icon: var x = name.split('#'); img = x[0]; i = (x.length == 2 ? parseInt(x[1])-1 : 0); } html += ' style="background-image:url(' + img + '); background-position:-' + (i*18) + 'px 0px;"'; } html += "></div>"; return html; }, /* Property: toggle By default (with no arguments) this function toggles the node between expanded/collapsed. Can also be used to recursively expand/collapse all or part of the tree. Parameters: recursive - boolean, defaults to false. With recursive set to true, all child nodes are recursively toggle to this node's new state. state - boolean. If undefined, the node's state is toggled. If true or false, the node can be explicitly opened or closed. */ toggle: function(recursive, state) { this.open = (state === undefined ? !this.open : state); this.update(); this.onExpand(this.open); this.control.onExpand(this, this.open); if (recursive) this.nodes.forEach( function(node) { node.toggle(true, this.open); }, this); }, /* Property: select Called by <MooTreeControl> when the selection changes. You should not manually call this method - to set the selection, use the <MooTreeControl.select> method. */ select: function(state) { this.selected = state; this.update(); this.onSelect(state); }, /* Property: load Asynchronously load an XML structure into a node of this tree. Parameters: url - string, required, specifies the URL from which to load the XML document. vars - query string, optional. */ load: function(url, vars) { if (this.loading) return; // if this node is already loading, return this.loading = true; // flag this node as loading this.toggle(false, true); // expand the node to make the loader visible this.clear(); this.insert(this.control.loader); var f = function() { new Request({ method: 'GET', url: url, onSuccess: this._loaded.bind(this), onFailure: this._load_err.bind(this) }).send(vars || ''); }.bind(this).delay(20); //window.setTimeout(f.bind(this), 20); // allowing a small delay for the browser to draw the loader-icon. }, _loaded: function(text, xml) { // called on success - import nodes from the root element: this.control.disable(); this.clear(); this._import(xml.documentElement); this.control.enable(); this.loading = false; }, _import: function(e) { // import childnodes from an xml element: var n = e.childNodes; for (var i=0; i<n.length; i++) if (n[i].tagName == 'node') { var opt = {data:{}}; var a = n[i].attributes; for (var t=0; t<a.length; t++) { switch (a[t].name) { case 'text': case 'id': case 'icon': case 'openicon': case 'color': case 'open': opt[a[t].name] = a[t].value; break; default: opt.data[a[t].name] = a[t].value; } } var node = this.insert(opt); if (node.data.load) { node.open = false; // can't have a dynamically loading node that's already open! node.insert(this.control.loader); node.onExpand = function(state) { this.load(this.data.load); this.onExpand = new Function(); } } // recursively import subnodes of this node: if (n[i].childNodes.length) node._import(n[i]); } }, _load_err: function(req) { window.alert('Error loading: ' + this.text); } });
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