/**
- * @class Ext.data.Tree
- * @extends Ext.util.Observable
- * Represents a tree data structure and bubbles all the events for its nodes. The nodes
- * in the tree have most standard DOM functionality.
- * @constructor
- * @param {Node} root (optional) The root node
- */
-Ext.data.Tree = function(root){
- this.nodeHash = {};
- /**
- * The root node for this tree
- * @type Node
- */
- this.root = null;
- if(root){
- this.setRootNode(root);
- }
- this.addEvents(
- /**
- * @event append
- * Fires when a new child node is appended to a node in this tree.
- * @param {Tree} tree The owner tree
- * @param {Node} parent The parent node
- * @param {Node} node The newly appended node
- * @param {Number} index The index of the newly appended node
- */
- "append",
- /**
- * @event remove
- * Fires when a child node is removed from a node in this tree.
- * @param {Tree} tree The owner tree
- * @param {Node} parent The parent node
- * @param {Node} node The child node removed
- */
- "remove",
- /**
- * @event move
- * Fires when a node is moved to a new location in the tree
- * @param {Tree} tree The owner tree
- * @param {Node} node The node moved
- * @param {Node} oldParent The old parent of this node
- * @param {Node} newParent The new parent of this node
- * @param {Number} index The index it was moved to
- */
- "move",
- /**
- * @event insert
- * Fires when a new child node is inserted in a node in this tree.
- * @param {Tree} tree The owner tree
- * @param {Node} parent The parent node
- * @param {Node} node The child node inserted
- * @param {Node} refNode The child node the node was inserted before
- */
- "insert",
- /**
- * @event beforeappend
- * Fires before a new child is appended to a node in this tree, return false to cancel the append.
- * @param {Tree} tree The owner tree
- * @param {Node} parent The parent node
- * @param {Node} node The child node to be appended
- */
- "beforeappend",
- /**
- * @event beforeremove
- * Fires before a child is removed from a node in this tree, return false to cancel the remove.
- * @param {Tree} tree The owner tree
- * @param {Node} parent The parent node
- * @param {Node} node The child node to be removed
- */
- "beforeremove",
- /**
- * @event beforemove
- * Fires before a node is moved to a new location in the tree. Return false to cancel the move.
- * @param {Tree} tree The owner tree
- * @param {Node} node The node being moved
- * @param {Node} oldParent The parent of the node
- * @param {Node} newParent The new parent the node is moving to
- * @param {Number} index The index it is being moved to
- */
- "beforemove",
- /**
- * @event beforeinsert
- * Fires before a new child is inserted in a node in this tree, return false to cancel the insert.
- * @param {Tree} tree The owner tree
- * @param {Node} parent The parent node
- * @param {Node} node The child node to be inserted
- * @param {Node} refNode The child node the node is being inserted before
- */
- "beforeinsert"
- );
-
- Ext.data.Tree.superclass.constructor.call(this);
-};
-
-Ext.extend(Ext.data.Tree, Ext.util.Observable, {
- /**
- * @cfg {String} pathSeparator
- * The token used to separate paths in node ids (defaults to '/').
- */
- pathSeparator: "/",
-
- // private
- proxyNodeEvent : function(){
- return this.fireEvent.apply(this, arguments);
- },
-
- /**
- * Returns the root node for this tree.
- * @return {Node}
- */
- getRootNode : function(){
- return this.root;
- },
-
- /**
- * Sets the root node for this tree.
- * @param {Node} node
- * @return {Node}
- */
- setRootNode : function(node){
- this.root = node;
- node.ownerTree = this;
- node.isRoot = true;
- this.registerNode(node);
- return node;
- },
-
- /**
- * Gets a node in this tree by its id.
- * @param {String} id
- * @return {Node}
- */
- getNodeById : function(id){
- return this.nodeHash[id];
- },
-
- // private
- registerNode : function(node){
- this.nodeHash[node.id] = node;
- },
-
- // private
- unregisterNode : function(node){
- delete this.nodeHash[node.id];
- },
-
- toString : function(){
- return "[Tree"+(this.id?" "+this.id:"")+"]";
- }
-});
-
-/**
- * @class Ext.data.Node
- * @extends Ext.util.Observable
- * @cfg {Boolean} leaf true if this node is a leaf and does not have children
- * @cfg {String} id The id for this node. If one is not specified, one is generated.
- * @constructor
- * @param {Object} attributes The attributes/config for the node
- */
-Ext.data.Node = function(attributes){
- /**
- * The attributes supplied for the node. You can use this property to access any custom attributes you supplied.
- * @type {Object}
- */
- this.attributes = attributes || {};
- this.leaf = this.attributes.leaf;
- /**
- * The node id. @type String
- */
- this.id = this.attributes.id;
- if(!this.id){
- this.id = Ext.id(null, "xnode-");
- this.attributes.id = this.id;
- }
- /**
- * All child nodes of this node. @type Array
- */
- this.childNodes = [];
- if(!this.childNodes.indexOf){ // indexOf is a must
- this.childNodes.indexOf = function(o){
- for(var i = 0, len = this.length; i < len; i++){
- if(this[i] == o){
- return i;
- }
- }
- return -1;
- };
- }
- /**
- * The parent node for this node. @type Node
- */
- this.parentNode = null;
- /**
- * The first direct child node of this node, or null if this node has no child nodes. @type Node
- */
- this.firstChild = null;
- /**
- * The last direct child node of this node, or null if this node has no child nodes. @type Node
- */
- this.lastChild = null;
- /**
- * The node immediately preceding this node in the tree, or null if there is no sibling node. @type Node
- */
- this.previousSibling = null;
- /**
- * The node immediately following this node in the tree, or null if there is no sibling node. @type Node
- */
- this.nextSibling = null;
-
- this.addEvents({
- /**
- * @event append
- * Fires when a new child node is appended
- * @param {Tree} tree The owner tree
- * @param {Node} this This node
- * @param {Node} node The newly appended node
- * @param {Number} index The index of the newly appended node
- */
- "append" : true,
- /**
- * @event remove
- * Fires when a child node is removed
- * @param {Tree} tree The owner tree
- * @param {Node} this This node
- * @param {Node} node The removed node
- */
- "remove" : true,
- /**
- * @event move
- * Fires when this node is moved to a new location in the tree
- * @param {Tree} tree The owner tree
- * @param {Node} this This node
- * @param {Node} oldParent The old parent of this node
- * @param {Node} newParent The new parent of this node
- * @param {Number} index The index it was moved to
- */
- "move" : true,
- /**
- * @event insert
- * Fires when a new child node is inserted.
- * @param {Tree} tree The owner tree
- * @param {Node} this This node
- * @param {Node} node The child node inserted
- * @param {Node} refNode The child node the node was inserted before
- */
- "insert" : true,
- /**
- * @event beforeappend
- * Fires before a new child is appended, return false to cancel the append.
- * @param {Tree} tree The owner tree
- * @param {Node} this This node
- * @param {Node} node The child node to be appended
- */
- "beforeappend" : true,
- /**
- * @event beforeremove
- * Fires before a child is removed, return false to cancel the remove.
- * @param {Tree} tree The owner tree
- * @param {Node} this This node
- * @param {Node} node The child node to be removed
- */
- "beforeremove" : true,
- /**
- * @event beforemove
- * Fires before this node is moved to a new location in the tree. Return false to cancel the move.
- * @param {Tree} tree The owner tree
- * @param {Node} this This node
- * @param {Node} oldParent The parent of this node
- * @param {Node} newParent The new parent this node is moving to
- * @param {Number} index The index it is being moved to
- */
- "beforemove" : true,
- /**
- * @event beforeinsert
- * Fires before a new child is inserted, return false to cancel the insert.
- * @param {Tree} tree The owner tree
- * @param {Node} this This node
- * @param {Node} node The child node to be inserted
- * @param {Node} refNode The child node the node is being inserted before
- */
- "beforeinsert" : true
- });
- this.listeners = this.attributes.listeners;
- Ext.data.Node.superclass.constructor.call(this);
-};
-
-Ext.extend(Ext.data.Node, Ext.util.Observable, {
- // private
- fireEvent : function(evtName){
- // first do standard event for this node
- if(Ext.data.Node.superclass.fireEvent.apply(this, arguments) === false){
- return false;
- }
- // then bubble it up to the tree if the event wasn't cancelled
- var ot = this.getOwnerTree();
- if(ot){
- if(ot.proxyNodeEvent.apply(ot, arguments) === false){
- return false;
- }
- }
- return true;
- },
-
- /**
- * Returns true if this node is a leaf
- * @return {Boolean}
- */
- isLeaf : function(){
- return this.leaf === true;
- },
-
- // private
- setFirstChild : function(node){
- this.firstChild = node;
- },
-
- //private
- setLastChild : function(node){
- this.lastChild = node;
- },
-
-
- /**
- * Returns true if this node is the last child of its parent
- * @return {Boolean}
- */
- isLast : function(){
- return (!this.parentNode ? true : this.parentNode.lastChild == this);
- },
-
- /**
- * Returns true if this node is the first child of its parent
- * @return {Boolean}
- */
- isFirst : function(){
- return (!this.parentNode ? true : this.parentNode.firstChild == this);
- },
-
- /**
- * Returns true if this node has one or more child nodes, else false.
- * @return {Boolean}
- */
- hasChildNodes : function(){
- return !this.isLeaf() && this.childNodes.length > 0;
- },
-
- /**
- * Returns true if this node has one or more child nodes, or if the expandable
- * node attribute is explicitly specified as true (see {@link #attributes}), otherwise returns false.
- * @return {Boolean}
- */
- isExpandable : function(){
- return this.attributes.expandable || this.hasChildNodes();
- },
-
- /**
- * Insert node(s) as the last child node of this node.
- * @param {Node/Array} node The node or Array of nodes to append
- * @return {Node} The appended node if single append, or null if an array was passed
- */
- appendChild : function(node){
- var multi = false;
- if(Ext.isArray(node)){
- multi = node;
- }else if(arguments.length > 1){
- multi = arguments;
- }
- // if passed an array or multiple args do them one by one
- if(multi){
- for(var i = 0, len = multi.length; i < len; i++) {
- this.appendChild(multi[i]);
- }
- }else{
- if(this.fireEvent("beforeappend", this.ownerTree, this, node) === false){
- return false;
- }
- var index = this.childNodes.length;
- var oldParent = node.parentNode;
- // it's a move, make sure we move it cleanly
- if(oldParent){
- if(node.fireEvent("beforemove", node.getOwnerTree(), node, oldParent, this, index) === false){
- return false;
- }
- oldParent.removeChild(node);
- }
- index = this.childNodes.length;
- if(index === 0){
- this.setFirstChild(node);
- }
- this.childNodes.push(node);
- node.parentNode = this;
- var ps = this.childNodes[index-1];
- if(ps){
- node.previousSibling = ps;
- ps.nextSibling = node;
- }else{
- node.previousSibling = null;
- }
- node.nextSibling = null;
- this.setLastChild(node);
- node.setOwnerTree(this.getOwnerTree());
- this.fireEvent("append", this.ownerTree, this, node, index);
- if(oldParent){
- node.fireEvent("move", this.ownerTree, node, oldParent, this, index);
- }
- return node;
- }
- },
-
- /**
- * Removes a child node from this node.
- * @param {Node} node The node to remove
- * @param {Boolean} destroy true to destroy the node upon removal. Defaults to false.
- * @return {Node} The removed node
- */
- removeChild : function(node, destroy){
- var index = this.childNodes.indexOf(node);
- if(index == -1){
- return false;
- }
- if(this.fireEvent("beforeremove", this.ownerTree, this, node) === false){
- return false;
- }
-
- // remove it from childNodes collection
- this.childNodes.splice(index, 1);
-
- // update siblings
- if(node.previousSibling){
- node.previousSibling.nextSibling = node.nextSibling;
- }
- if(node.nextSibling){
- node.nextSibling.previousSibling = node.previousSibling;
- }
-
- // update child refs
- if(this.firstChild == node){
- this.setFirstChild(node.nextSibling);
- }
- if(this.lastChild == node){
- this.setLastChild(node.previousSibling);
- }
-
- node.clear();
- this.fireEvent("remove", this.ownerTree, this, node);
- if(destroy){
- node.destroy();
- }
- return node;
- },
-
- // private
- clear : function(destroy){
- // clear any references from the node
- this.setOwnerTree(null, destroy);
- this.parentNode = this.previousSibling = this.nextSibling = null
- if(destroy){
- this.firstChild = this.lastChild = null;
- }
- },
-
- /**
- * Destroys the node.
- */
- destroy : function(){
- this.purgeListeners();
- this.clear(true);
- Ext.each(this.childNodes, function(n){
- n.destroy();
- });
- this.childNodes = null;
- },
-
- /**
- * Inserts the first node before the second node in this nodes childNodes collection.
- * @param {Node} node The node to insert
- * @param {Node} refNode The node to insert before (if null the node is appended)
- * @return {Node} The inserted node
- */
- insertBefore : function(node, refNode){
- if(!refNode){ // like standard Dom, refNode can be null for append
- return this.appendChild(node);
- }
- // nothing to do
- if(node == refNode){
- return false;
- }
-
- if(this.fireEvent("beforeinsert", this.ownerTree, this, node, refNode) === false){
- return false;
- }
- var index = this.childNodes.indexOf(refNode);
- var oldParent = node.parentNode;
- var refIndex = index;
-
- // when moving internally, indexes will change after remove
- if(oldParent == this && this.childNodes.indexOf(node) < index){
- refIndex--;
- }
-
- // it's a move, make sure we move it cleanly
- if(oldParent){
- if(node.fireEvent("beforemove", node.getOwnerTree(), node, oldParent, this, index, refNode) === false){
- return false;
- }
- oldParent.removeChild(node);
- }
- if(refIndex === 0){
- this.setFirstChild(node);
- }
- this.childNodes.splice(refIndex, 0, node);
- node.parentNode = this;
- var ps = this.childNodes[refIndex-1];
- if(ps){
- node.previousSibling = ps;
- ps.nextSibling = node;
- }else{
- node.previousSibling = null;
- }
- node.nextSibling = refNode;
- refNode.previousSibling = node;
- node.setOwnerTree(this.getOwnerTree());
- this.fireEvent("insert", this.ownerTree, this, node, refNode);
- if(oldParent){
- node.fireEvent("move", this.ownerTree, node, oldParent, this, refIndex, refNode);
- }
- return node;
- },
-
- /**
- * Removes this node from its parent
- * @param {Boolean} destroy true to destroy the node upon removal. Defaults to false.
- * @return {Node} this
- */
- remove : function(destroy){
- this.parentNode.removeChild(this, destroy);
- return this;
- },
-
- /**
- * Returns the child node at the specified index.
- * @param {Number} index
- * @return {Node}
- */
- item : function(index){
- return this.childNodes[index];
- },
-
- /**
- * Replaces one child node in this node with another.
- * @param {Node} newChild The replacement node
- * @param {Node} oldChild The node to replace
- * @return {Node} The replaced node
- */
- replaceChild : function(newChild, oldChild){
- var s = oldChild ? oldChild.nextSibling : null;
- this.removeChild(oldChild);
- this.insertBefore(newChild, s);
- return oldChild;
- },
-
- /**
- * Returns the index of a child node
- * @param {Node} node
- * @return {Number} The index of the node or -1 if it was not found
- */
- indexOf : function(child){
- return this.childNodes.indexOf(child);
- },
-
- /**
- * Returns the tree this node is in.
- * @return {Tree}
- */
- getOwnerTree : function(){
- // if it doesn't have one, look for one
- if(!this.ownerTree){
- var p = this;
- while(p){
- if(p.ownerTree){
- this.ownerTree = p.ownerTree;
- break;
- }
- p = p.parentNode;
- }
- }
- return this.ownerTree;
- },
-
- /**
- * Returns depth of this node (the root node has a depth of 0)
- * @return {Number}
- */
- getDepth : function(){
- var depth = 0;
- var p = this;
- while(p.parentNode){
- ++depth;
- p = p.parentNode;
- }
- return depth;
- },
-
- // private
- setOwnerTree : function(tree, destroy){
- // if it is a move, we need to update everyone
- if(tree != this.ownerTree){
- if(this.ownerTree){
- this.ownerTree.unregisterNode(this);
- }
- this.ownerTree = tree;
- // If we're destroying, we don't need to recurse since it will be called on each child node
- if(destroy !== true){
- Ext.each(this.childNodes, function(n){
- n.setOwnerTree(tree);
- });
- }
- if(tree){
- tree.registerNode(this);
- }
- }
- },
-
- /**
- * Changes the id of this node.
- * @param {String} id The new id for the node.
- */
- setId: function(id){
- if(id !== this.id){
- var t = this.ownerTree;
- if(t){
- t.unregisterNode(this);
- }
- this.id = this.attributes.id = id;
- if(t){
- t.registerNode(this);
- }
- this.onIdChange(id);
- }
- },
-
- // private
- onIdChange: Ext.emptyFn,
-
- /**
- * Returns the path for this node. The path can be used to expand or select this node programmatically.
- * @param {String} attr (optional) The attr to use for the path (defaults to the node's id)
- * @return {String} The path
- */
- getPath : function(attr){
- attr = attr || "id";
- var p = this.parentNode;
- var b = [this.attributes[attr]];
- while(p){
- b.unshift(p.attributes[attr]);
- p = p.parentNode;
- }
- var sep = this.getOwnerTree().pathSeparator;
- return sep + b.join(sep);
- },
-
- /**
- * Bubbles up the tree from this node, calling the specified function with each node. The arguments to the function
- * will be the args provided or the current node. If the function returns false at any point,
- * the bubble is stopped.
- * @param {Function} fn The function to call
- * @param {Object} scope (optional) The scope (this reference) in which the function is executed. Defaults to the current Node.
- * @param {Array} args (optional) The args to call the function with (default to passing the current Node)
- */
- bubble : function(fn, scope, args){
- var p = this;
- while(p){
- if(fn.apply(scope || p, args || [p]) === false){
- break;
- }
- p = p.parentNode;
- }
- },
-
- /**
- * Cascades down the tree from this node, calling the specified function with each node. The arguments to the function
- * will be the args provided or the current node. If the function returns false at any point,
- * the cascade is stopped on that branch.
- * @param {Function} fn The function to call
- * @param {Object} scope (optional) The scope (this reference) in which the function is executed. Defaults to the current Node.
- * @param {Array} args (optional) The args to call the function with (default to passing the current Node)
- */
- cascade : function(fn, scope, args){
- if(fn.apply(scope || this, args || [this]) !== false){
- var cs = this.childNodes;
- for(var i = 0, len = cs.length; i < len; i++) {
- cs[i].cascade(fn, scope, args);
- }
- }
- },
-
- /**
- * Interates the child nodes of this node, calling the specified function with each node. The arguments to the function
- * will be the args provided or the current node. If the function returns false at any point,
- * the iteration stops.
- * @param {Function} fn The function to call
- * @param {Object} scope (optional) The scope (this reference) in which the function is executed. Defaults to the current Node in the iteration.
- * @param {Array} args (optional) The args to call the function with (default to passing the current Node)
- */
- eachChild : function(fn, scope, args){
- var cs = this.childNodes;
- for(var i = 0, len = cs.length; i < len; i++) {
- if(fn.apply(scope || this, args || [cs[i]]) === false){
- break;
- }
- }
- },
-
- /**
- * Finds the first child that has the attribute with the specified value.
- * @param {String} attribute The attribute name
- * @param {Mixed} value The value to search for
- * @return {Node} The found child or null if none was found
- */
- findChild : function(attribute, value){
- var cs = this.childNodes;
- for(var i = 0, len = cs.length; i < len; i++) {
- if(cs[i].attributes[attribute] == value){
- return cs[i];
- }
- }
- return null;
- },
-
- /**
- * Finds the first child by a custom function. The child matches if the function passed returns true.
- * @param {Function} fn A function which must return true if the passed Node is the required Node.
- * @param {Object} scope (optional) The scope (this reference) in which the function is executed. Defaults to the Node being tested.
- * @return {Node} The found child or null if none was found
- */
- findChildBy : function(fn, scope){
- var cs = this.childNodes;
- for(var i = 0, len = cs.length; i < len; i++) {
- if(fn.call(scope||cs[i], cs[i]) === true){
- return cs[i];
- }
- }
- return null;
- },
-
- /**
- * Sorts this nodes children using the supplied sort function.
- * @param {Function} fn A function which, when passed two Nodes, returns -1, 0 or 1 depending upon required sort order.
- * @param {Object} scope (optional)The scope (this reference) in which the function is executed. Defaults to the browser window.
- */
- sort : function(fn, scope){
- var cs = this.childNodes;
- var len = cs.length;
- if(len > 0){
- var sortFn = scope ? function(){fn.apply(scope, arguments);} : fn;
- cs.sort(sortFn);
- for(var i = 0; i < len; i++){
- var n = cs[i];
- n.previousSibling = cs[i-1];
- n.nextSibling = cs[i+1];
- if(i === 0){
- this.setFirstChild(n);
- }
- if(i == len-1){
- this.setLastChild(n);
- }
- }
- }
- },
-
- /**
- * Returns true if this node is an ancestor (at any point) of the passed node.
- * @param {Node} node
- * @return {Boolean}
- */
- contains : function(node){
- return node.isAncestor(this);
- },
-
- /**
- * Returns true if the passed node is an ancestor (at any point) of this node.
- * @param {Node} node
- * @return {Boolean}
- */
- isAncestor : function(node){
- var p = this.parentNode;
- while(p){
- if(p == node){
- return true;
- }
- p = p.parentNode;
- }
- return false;
- },
-
- toString : function(){
- return "[Node"+(this.id?" "+this.id:"")+"]";
- }
-});
-
-
\ No newline at end of file
+
+
+
+
+ The source code
+
+
+
+
+
+
+
/**
+ * @class Ext.data.Tree
+ *
+ * This class is used as a container for a series of nodes. The nodes themselves maintain
+ * the relationship between parent/child. The tree itself acts as a manager. It gives functionality
+ * to retrieve a node by its identifier: {@link #getNodeById}.
+ *
+ * The tree also relays events from any of it's child nodes, allowing them to be handled in a
+ * centralized fashion. In general this class is not used directly, rather used internally
+ * by other parts of the framework.
+ *
+ */
+Ext.define('Ext.data.Tree', {
+ alias: 'data.tree',
+
+ mixins: {
+ observable: "Ext.util.Observable"
+ },
+
+ /**
+ * The root node for this tree
+ * @type Node
+ */
+ root: null,
+
+ /**
+ * Creates new Tree object.
+ * @param {Node} root (optional) The root node
+ */
+ constructor: function(root) {
+ var me = this;
+
+ me.nodeHash = {};
+
+ me.mixins.observable.constructor.call(me);
+
+ if (root) {
+ me.setRootNode(root);
+ }
+ },
+
+ /**
+ * Returns the root node for this tree.
+ * @return {Ext.data.NodeInterface}
+ */
+ getRootNode : function() {
+ return this.root;
+ },
+
+ /**
+ * Sets the root node for this tree.
+ * @param {Ext.data.NodeInterface} node
+ * @return {Ext.data.NodeInterface} The root node
+ */
+ setRootNode : function(node) {
+ var me = this;
+
+ me.root = node;
+ Ext.data.NodeInterface.decorate(node);
+
+ if (me.fireEvent('beforeappend', null, node) !== false) {
+ node.set('root', true);
+ node.updateInfo();
+
+ me.relayEvents(node, [
+ /**
+ * @event append
+ * Fires when a new child node is appended to a node in this tree.
+ * @param {Tree} tree The owner tree
+ * @param {Node} parent The parent node
+ * @param {Node} node The newly appended node
+ * @param {Number} index The index of the newly appended node
+ */
+ "append",
+
+ /**
+ * @event remove
+ * Fires when a child node is removed from a node in this tree.
+ * @param {Tree} tree The owner tree
+ * @param {Node} parent The parent node
+ * @param {Node} node The child node removed
+ */
+ "remove",
+
+ /**
+ * @event move
+ * Fires when a node is moved to a new location in the tree
+ * @param {Tree} tree The owner tree
+ * @param {Node} node The node moved
+ * @param {Node} oldParent The old parent of this node
+ * @param {Node} newParent The new parent of this node
+ * @param {Number} index The index it was moved to
+ */
+ "move",
+
+ /**
+ * @event insert
+ * Fires when a new child node is inserted in a node in this tree.
+ * @param {Tree} tree The owner tree
+ * @param {Node} parent The parent node
+ * @param {Node} node The child node inserted
+ * @param {Node} refNode The child node the node was inserted before
+ */
+ "insert",
+
+ /**
+ * @event beforeappend
+ * Fires before a new child is appended to a node in this tree, return false to cancel the append.
+ * @param {Tree} tree The owner tree
+ * @param {Node} parent The parent node
+ * @param {Node} node The child node to be appended
+ */
+ "beforeappend",
+
+ /**
+ * @event beforeremove
+ * Fires before a child is removed from a node in this tree, return false to cancel the remove.
+ * @param {Tree} tree The owner tree
+ * @param {Node} parent The parent node
+ * @param {Node} node The child node to be removed
+ */
+ "beforeremove",
+
+ /**
+ * @event beforemove
+ * Fires before a node is moved to a new location in the tree. Return false to cancel the move.
+ * @param {Tree} tree The owner tree
+ * @param {Node} node The node being moved
+ * @param {Node} oldParent The parent of the node
+ * @param {Node} newParent The new parent the node is moving to
+ * @param {Number} index The index it is being moved to
+ */
+ "beforemove",
+
+ /**
+ * @event beforeinsert
+ * Fires before a new child is inserted in a node in this tree, return false to cancel the insert.
+ * @param {Tree} tree The owner tree
+ * @param {Node} parent The parent node
+ * @param {Node} node The child node to be inserted
+ * @param {Node} refNode The child node the node is being inserted before
+ */
+ "beforeinsert",
+
+ /**
+ * @event expand
+ * Fires when this node is expanded.
+ * @param {Node} this The expanding node
+ */
+ "expand",
+
+ /**
+ * @event collapse
+ * Fires when this node is collapsed.
+ * @param {Node} this The collapsing node
+ */
+ "collapse",
+
+ /**
+ * @event beforeexpand
+ * Fires before this node is expanded.
+ * @param {Node} this The expanding node
+ */
+ "beforeexpand",
+
+ /**
+ * @event beforecollapse
+ * Fires before this node is collapsed.
+ * @param {Node} this The collapsing node
+ */
+ "beforecollapse" ,
+
+ /**
+ * @event rootchange
+ * Fires whenever the root node is changed in the tree.
+ * @param {Ext.data.Model} root The new root
+ */
+ "rootchange"
+ ]);
+
+ node.on({
+ scope: me,
+ insert: me.onNodeInsert,
+ append: me.onNodeAppend,
+ remove: me.onNodeRemove
+ });
+
+ me.registerNode(node);
+ me.fireEvent('append', null, node);
+ me.fireEvent('rootchange', node);
+ }
+
+ return node;
+ },
+
+ /**
+ * Flattens all the nodes in the tree into an array.
+ * @private
+ * @return {Array} The flattened nodes.
+ */
+ flatten: function(){
+ var nodes = [],
+ hash = this.nodeHash,
+ key;
+
+ for (key in hash) {
+ if (hash.hasOwnProperty(key)) {
+ nodes.push(hash[key]);
+ }
+ }
+ return nodes;
+ },
+
+ /**
+ * Fired when a node is inserted into the root or one of it's children
+ * @private
+ * @param {Ext.data.NodeInterface} parent The parent node
+ * @param {Ext.data.NodeInterface} node The inserted node
+ */
+ onNodeInsert: function(parent, node) {
+ this.registerNode(node);
+ },
+
+ /**
+ * Fired when a node is appended into the root or one of it's children
+ * @private
+ * @param {Ext.data.NodeInterface} parent The parent node
+ * @param {Ext.data.NodeInterface} node The appended node
+ */
+ onNodeAppend: function(parent, node) {
+ this.registerNode(node);
+ },
+
+ /**
+ * Fired when a node is removed from the root or one of it's children
+ * @private
+ * @param {Ext.data.NodeInterface} parent The parent node
+ * @param {Ext.data.NodeInterface} node The removed node
+ */
+ onNodeRemove: function(parent, node) {
+ this.unregisterNode(node);
+ },
+
+ /**
+ * Gets a node in this tree by its id.
+ * @param {String} id
+ * @return {Ext.data.NodeInterface} The match node.
+ */
+ getNodeById : function(id) {
+ return this.nodeHash[id];
+ },
+
+ /**
+ * Registers a node with the tree
+ * @private
+ * @param {Ext.data.NodeInterface} The node to register
+ */
+ registerNode : function(node) {
+ this.nodeHash[node.getId() || node.internalId] = node;
+ },
+
+ /**
+ * Unregisters a node with the tree
+ * @private
+ * @param {Ext.data.NodeInterface} The node to unregister
+ */
+ unregisterNode : function(node) {
+ delete this.nodeHash[node.getId() || node.internalId];
+ },
+
+ /**
+ * Sorts this tree
+ * @private
+ * @param {Function} sorterFn The function to use for sorting
+ * @param {Boolean} recursive True to perform recursive sorting
+ */
+ sort: function(sorterFn, recursive) {
+ this.getRootNode().sort(sorterFn, recursive);
+ },
+
+ /**
+ * Filters this tree
+ * @private
+ * @param {Function} sorterFn The function to use for filtering
+ * @param {Boolean} recursive True to perform recursive filtering
+ */
+ filter: function(filters, recursive) {
+ this.getRootNode().filter(filters, recursive);
+ }
+});