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1205 lines
34 KiB
JavaScript
1205 lines
34 KiB
JavaScript
![]()
15 years ago
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dojo.provide("dijit.Tree");
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dojo.require("dojo.fx");
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dojo.require("dijit._Widget");
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dojo.require("dijit._Templated");
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dojo.require("dijit._Container");
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dojo.require("dijit._Contained");
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dojo.require("dojo.cookie");
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dojo.declare(
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"dijit._TreeNode",
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[dijit._Widget, dijit._Templated, dijit._Container, dijit._Contained],
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{
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// summary:
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// Single node within a tree. This class is used internally
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// by Tree and should not be accessed directly.
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// tags:
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// private
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// item: dojo.data.Item
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// the dojo.data entry this tree represents
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item: null,
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// isTreeNode: [protected] Boolean
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// Indicates that this is a TreeNode. Used by `dijit.Tree` only,
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// should not be accessed directly.
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isTreeNode: true,
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// label: String
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// Text of this tree node
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label: "",
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// isExpandable: [private] Boolean
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// This node has children, so show the expando node (+ sign)
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isExpandable: null,
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// isExpanded: [readonly] Boolean
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// This node is currently expanded (ie, opened)
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isExpanded: false,
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// state: [private] String
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// Dynamic loading-related stuff.
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// When an empty folder node appears, it is "UNCHECKED" first,
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// then after dojo.data query it becomes "LOADING" and, finally "LOADED"
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state: "UNCHECKED",
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templatePath: dojo.moduleUrl("dijit", "templates/TreeNode.html"),
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postCreate: function(){
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// set label, escaping special characters
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this.setLabelNode(this.label);
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// set expand icon for leaf
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this._setExpando();
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// set icon and label class based on item
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this._updateItemClasses(this.item);
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if(this.isExpandable){
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dijit.setWaiState(this.labelNode, "expanded", this.isExpanded);
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if(this == this.tree.rootNode){
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dijit.setWaitState(this.tree.domNode, "expanded", this.isExpanded);
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}
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}
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},
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_setIndentAttr: function(indent){
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// summary:
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// Tell this node how many levels it should be indented
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// description:
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// 0 for top level nodes, 1 for their children, 2 for their
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// grandchildren, etc.
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this.indent = indent;
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// Math.max() is to prevent negative padding on hidden root node (when indent == -1)
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// 19 is the width of the expandoIcon (TODO: get this from CSS instead of hardcoding)
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var pixels = (Math.max(indent, 0) * 19) + "px";
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dojo.style(this.domNode, "backgroundPosition", pixels + " 0px");
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dojo.style(this.rowNode, dojo._isBodyLtr() ? "paddingLeft" : "paddingRight", pixels);
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dojo.forEach(this.getChildren(), function(child){
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child.attr("indent", indent+1);
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});
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},
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markProcessing: function(){
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// summary:
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// Visually denote that tree is loading data, etc.
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// tags:
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// private
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this.state = "LOADING";
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this._setExpando(true);
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},
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unmarkProcessing: function(){
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// summary:
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// Clear markup from markProcessing() call
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// tags:
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// private
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this._setExpando(false);
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},
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_updateItemClasses: function(item){
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// summary:
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// Set appropriate CSS classes for icon and label dom node
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// (used to allow for item updates to change respective CSS)
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// tags:
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// private
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var tree = this.tree, model = tree.model;
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if(tree._v10Compat && item === model.root){
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// For back-compat with 1.0, need to use null to specify root item (TODO: remove in 2.0)
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item = null;
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}
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if(this._iconClass){
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dojo.removeClass(this.iconNode, this._iconClass);
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}
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this._iconClass = tree.getIconClass(item, this.isExpanded);
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if(this._iconClass){
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dojo.addClass(this.iconNode, this._iconClass);
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}
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dojo.style(this.iconNode, tree.getIconStyle(item, this.isExpanded) || {});
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if(this._labelClass){
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dojo.removeClass(this.labelNode, this._labelClass);
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}
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this._labelClass = tree.getLabelClass(item, this.isExpanded);
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if(this._labelClass){
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dojo.addClass(this.labelNode, this._labelClass);
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}
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dojo.style(this.labelNode, tree.getLabelStyle(item, this.isExpanded) || {});
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},
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_updateLayout: function(){
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// summary:
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// Set appropriate CSS classes for this.domNode
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// tags:
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// private
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var parent = this.getParent();
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if(!parent || parent.rowNode.style.display == "none"){
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/* if we are hiding the root node then make every first level child look like a root node */
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dojo.addClass(this.domNode, "dijitTreeIsRoot");
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}else{
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dojo.toggleClass(this.domNode, "dijitTreeIsLast", !this.getNextSibling());
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}
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},
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_setExpando: function(/*Boolean*/ processing){
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// summary:
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// Set the right image for the expando node
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// tags:
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// private
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// apply the appropriate class to the expando node
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var styles = ["dijitTreeExpandoLoading", "dijitTreeExpandoOpened",
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"dijitTreeExpandoClosed", "dijitTreeExpandoLeaf"];
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var _a11yStates = ["*","-","+","*"];
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var idx = processing ? 0 : (this.isExpandable ? (this.isExpanded ? 1 : 2) : 3);
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dojo.forEach(styles,
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function(s){
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dojo.removeClass(this.expandoNode, s);
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}, this
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);
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dojo.addClass(this.expandoNode, styles[idx]);
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// provide a non-image based indicator for images-off mode
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this.expandoNodeText.innerHTML = _a11yStates[idx];
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},
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expand: function(){
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// summary:
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// Show my children
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if(this.isExpanded){ return; }
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// cancel in progress collapse operation
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this._wipeOut && this._wipeOut.stop();
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this.isExpanded = true;
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dijit.setWaiState(this.labelNode, "expanded", "true");
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dijit.setWaiRole(this.containerNode, "group");
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dojo.addClass(this.contentNode,'dijitTreeContentExpanded');
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this._setExpando();
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this._updateItemClasses(this.item);
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if(this == this.tree.rootNode){
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dijit.setWaiState(this.tree.domNode, "expanded", "true");
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}
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if(!this._wipeIn){
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this._wipeIn = dojo.fx.wipeIn({
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node: this.containerNode, duration: dijit.defaultDuration
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});
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}
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this._wipeIn.play();
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},
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collapse: function(){
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// summary:
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// Collapse this node (if it's expanded)
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if(!this.isExpanded){ return; }
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// cancel in progress expand operation
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this._wipeIn && this._wipeIn.stop();
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this.isExpanded = false;
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dijit.setWaiState(this.labelNode, "expanded", "false");
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if(this == this.tree.rootNode){
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dijit.setWaiState(this.tree.domNode, "expanded", "false");
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}
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dojo.removeClass(this.contentNode,'dijitTreeContentExpanded');
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this._setExpando();
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this._updateItemClasses(this.item);
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if(!this._wipeOut){
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this._wipeOut = dojo.fx.wipeOut({
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node: this.containerNode, duration: dijit.defaultDuration
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});
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}
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this._wipeOut.play();
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},
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setLabelNode: function(label){
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// summary:
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// Sets the label
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this.labelNode.innerHTML = "";
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this.labelNode.appendChild(dojo.doc.createTextNode(label));
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},
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// indent: Integer
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// Levels from this node to the root node
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indent: 0,
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setChildItems: function(/* Object[] */ items){
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// summary:
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// Sets the child items of this node, removing/adding nodes
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// from current children to match specified items[] array.
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var tree = this.tree,
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model = tree.model;
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// Orphan all my existing children.
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// If items contains some of the same items as before then we will reattach them.
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// Don't call this.removeChild() because that will collapse the tree etc.
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this.getChildren().forEach(function(child){
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dijit._Container.prototype.removeChild.call(this, child);
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}, this);
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this.state = "LOADED";
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if(items && items.length > 0){
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this.isExpandable = true;
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// Create _TreeNode widget for each specified tree node, unless one already
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// exists and isn't being used (presumably it's from a DnD move and was recently
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// released
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dojo.forEach(items, function(item){
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var id = model.getIdentity(item),
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existingNode = tree._itemNodeMap[id],
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node =
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( existingNode && !existingNode.getParent() ) ?
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existingNode :
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this.tree._createTreeNode({
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item: item,
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tree: tree,
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isExpandable: model.mayHaveChildren(item),
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label: tree.getLabel(item),
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indent: this.indent + 1
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});
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if(existingNode){
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existingNode.attr('indent', this.indent+1);
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}
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this.addChild(node);
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// note: this won't work if there are two nodes for one item (multi-parented items); will be fixed later
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tree._itemNodeMap[id] = node;
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if(this.tree._state(item)){
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tree._expandNode(node);
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}
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}, this);
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// note that updateLayout() needs to be called on each child after
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// _all_ the children exist
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dojo.forEach(this.getChildren(), function(child, idx){
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child._updateLayout();
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});
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}else{
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this.isExpandable=false;
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}
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if(this._setExpando){
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// change expando to/from dot or + icon, as appropriate
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this._setExpando(false);
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}
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// On initial tree show, make the selected TreeNode as either the root node of the tree,
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// or the first child, if the root node is hidden
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if(this == tree.rootNode){
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var fc = this.tree.showRoot ? this : this.getChildren()[0];
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if(fc){
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fc.setSelected(true);
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tree.lastFocused = fc;
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}else{
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// fallback: no nodes in tree so focus on Tree <div> itself
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tree.domNode.setAttribute("tabIndex", "0");
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}
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}
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},
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removeChild: function(/* treeNode */ node){
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this.inherited(arguments);
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var children = this.getChildren();
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if(children.length == 0){
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this.isExpandable = false;
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this.collapse();
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}
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dojo.forEach(children, function(child){
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child._updateLayout();
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});
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},
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makeExpandable: function(){
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//summary:
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// if this node wasn't already showing the expando node,
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// turn it into one and call _setExpando()
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// TODO: hmm this isn't called from anywhere, maybe should remove it for 2.0
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this.isExpandable = true;
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this._setExpando(false);
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},
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_onLabelFocus: function(evt){
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// summary:
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// Called when this node is focused (possibly programatically)
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// tags:
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// private
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dojo.addClass(this.labelNode, "dijitTreeLabelFocused");
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this.tree._onNodeFocus(this);
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},
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_onLabelBlur: function(evt){
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// summary:
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// Called when focus was moved away from this node, either to
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// another TreeNode or away from the Tree entirely.
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// Note that we aren't using _onFocus/_onBlur builtin to dijit
|
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// because _onBlur() isn't called when focus is moved to my child TreeNode.
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// tags:
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||
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// private
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dojo.removeClass(this.labelNode, "dijitTreeLabelFocused");
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},
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setSelected: function(/*Boolean*/ selected){
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||
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// summary:
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// A Tree has a (single) currently selected node.
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// Mark that this node is/isn't that currently selected node.
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||
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// description:
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// In particular, setting a node as selected involves setting tabIndex
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// so that when user tabs to the tree, focus will go to that node (only).
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var labelNode = this.labelNode;
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labelNode.setAttribute("tabIndex", selected ? "0" : "-1");
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dijit.setWaiState(labelNode, "selected", selected);
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dojo.toggleClass(this.rowNode, "dijitTreeNodeSelected", selected);
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},
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||
|
|
||
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_onMouseEnter: function(evt){
|
||
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// summary:
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||
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// Handler for onmouseenter event on a node
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||
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// tags:
|
||
|
// private
|
||
|
dojo.addClass(this.rowNode, "dijitTreeNodeHover");
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||
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this.tree._onNodeMouseEnter(this, evt);
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||
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},
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||
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||
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_onMouseLeave: function(evt){
|
||
|
// summary:
|
||
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// Handler for onmouseenter event on a node
|
||
|
// tags:
|
||
|
// private
|
||
|
dojo.removeClass(this.rowNode, "dijitTreeNodeHover");
|
||
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this.tree._onNodeMouseLeave(this, evt);
|
||
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}
|
||
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});
|
||
|
|
||
|
dojo.declare(
|
||
|
"dijit.Tree",
|
||
|
[dijit._Widget, dijit._Templated],
|
||
|
{
|
||
|
// summary:
|
||
|
// This widget displays hierarchical data from a store.
|
||
|
|
||
|
// store: [deprecated] String||dojo.data.Store
|
||
|
// Deprecated. Use "model" parameter instead.
|
||
|
// The store to get data to display in the tree.
|
||
|
store: null,
|
||
|
|
||
|
// model: dijit.Tree.model
|
||
|
// Interface to read tree data, get notifications of changes to tree data,
|
||
|
// and for handling drop operations (i.e drag and drop onto the tree)
|
||
|
model: null,
|
||
|
|
||
|
// query: [deprecated] anything
|
||
|
// Deprecated. User should specify query to the model directly instead.
|
||
|
// Specifies datastore query to return the root item or top items for the tree.
|
||
|
query: null,
|
||
|
|
||
|
// label: [deprecated] String
|
||
|
// Deprecated. Use dijit.tree.ForestStoreModel directly instead.
|
||
|
// Used in conjunction with query parameter.
|
||
|
// If a query is specified (rather than a root node id), and a label is also specified,
|
||
|
// then a fake root node is created and displayed, with this label.
|
||
|
label: "",
|
||
|
|
||
|
// showRoot: [const] Boolean
|
||
|
// Should the root node be displayed, or hidden?
|
||
|
showRoot: true,
|
||
|
|
||
|
// childrenAttr: [deprecated] String[]
|
||
|
// Deprecated. This information should be specified in the model.
|
||
|
// One ore more attributes that holds children of a tree node
|
||
|
childrenAttr: ["children"],
|
||
|
|
||
|
// openOnClick: Boolean
|
||
|
// If true, clicking a folder node's label will open it, rather than calling onClick()
|
||
|
openOnClick: false,
|
||
|
|
||
|
// openOnDblClick: Boolean
|
||
|
// If true, double-clicking a folder node's label will open it, rather than calling onDblClick()
|
||
|
openOnDblClick: false,
|
||
|
|
||
|
templatePath: dojo.moduleUrl("dijit", "templates/Tree.html"),
|
||
|
|
||
|
// isExpandable: [private deprecated] Boolean
|
||
|
// TODO: this appears to be vestigal, back from when Tree extended TreeNode. Remove.
|
||
|
isExpandable: true,
|
||
|
|
||
|
// isTree: [private deprecated] Boolean
|
||
|
// TODO: this appears to be vestigal. Remove.
|
||
|
isTree: true,
|
||
|
|
||
|
// persist: Boolean
|
||
|
// Enables/disables use of cookies for state saving.
|
||
|
persist: true,
|
||
|
|
||
|
// dndController: [protected] String
|
||
|
// Class name to use as as the dnd controller. Specifying this class enables DnD.
|
||
|
// Generally you should specify this as "dijit._tree.dndSource".
|
||
|
dndController: null,
|
||
|
|
||
|
// parameters to pull off of the tree and pass on to the dndController as its params
|
||
|
dndParams: ["onDndDrop","itemCreator","onDndCancel","checkAcceptance", "checkItemAcceptance", "dragThreshold", "betweenThreshold"],
|
||
|
|
||
|
//declare the above items so they can be pulled from the tree's markup
|
||
|
|
||
|
// onDndDrop: [protected] Function
|
||
|
// Parameter to dndController, see `dijit._tree.dndSource.onDndDrop`.
|
||
|
// Generally this doesn't need to be set.
|
||
|
onDndDrop: null,
|
||
|
|
||
|
// itemCreator: [protected] Function
|
||
|
// Parameter to dndController, see `dijit._tree.dndSource.itemCreator`.
|
||
|
// Generally this doesn't need to be set.
|
||
|
itemCreator: null,
|
||
|
|
||
|
// onDndCancel: [protected] Function
|
||
|
// Parameter to dndController, see `dijit._tree.dndSource.onDndCancel`.
|
||
|
// Generally this doesn't need to be set.
|
||
|
onDndCancel: null,
|
||
|
|
||
|
/*=====
|
||
|
checkAcceptance: function(source, nodes){
|
||
|
// summary:
|
||
|
// Checks if the Tree itself can accept nodes from this source
|
||
|
// source: dijit.tree._dndSource
|
||
|
// The source which provides items
|
||
|
// nodes: DOMNode[]
|
||
|
// Array of DOM nodes corresponding to nodes being dropped, dijitTreeRow nodes if
|
||
|
// source is a dijit.Tree.
|
||
|
// tags:
|
||
|
// extension
|
||
|
return true; // Boolean
|
||
|
},
|
||
|
=====*/
|
||
|
checkAcceptance: null,
|
||
|
|
||
|
/*=====
|
||
|
checkItemAcceptance: function(target, source, position){
|
||
|
// summary:
|
||
|
// Stub function to be overridden if one wants to check for the ability to drop at the node/item level
|
||
|
// description:
|
||
|
// In the base case, this is called to check if target can become a child of source.
|
||
|
// When betweenThreshold is set, position="before" or "after" means that we
|
||
|
// are asking if the source node can be dropped before/after the target node.
|
||
|
// target: DOMNode
|
||
|
// The dijitTreeRoot DOM node inside of the TreeNode that we are dropping on to
|
||
|
// Use dijit.getEnclosingWidget(target) to get the TreeNode.
|
||
|
// source: dijit._tree.dndSource
|
||
|
// The (set of) nodes we are dropping
|
||
|
// position: String
|
||
|
// "over", "before", or "after"
|
||
|
// tags:
|
||
|
// extension
|
||
|
return true; // Boolean
|
||
|
},
|
||
|
=====*/
|
||
|
checkItemAcceptance: null,
|
||
|
|
||
|
// dragThreshold: Integer
|
||
|
// Number of pixels mouse moves before it's considered the start of a drag operation
|
||
|
dragThreshold: 0,
|
||
|
|
||
|
// betweenThreshold: Integer
|
||
|
// Set to a positive value to allow drag and drop "between" nodes.
|
||
|
//
|
||
|
// If during DnD mouse is over a (target) node but less than betweenThreshold
|
||
|
// pixels from the bottom edge, dropping the the dragged node will make it
|
||
|
// the next sibling of the target node, rather than the child.
|
||
|
//
|
||
|
// Similarly, if mouse is over a target node but less that betweenThreshold
|
||
|
// pixels from the top edge, dropping the dragged node will make it
|
||
|
// the target node's previous sibling rather than the target node's child.
|
||
|
betweenThreshold: 0,
|
||
|
|
||
|
_publish: function(/*String*/ topicName, /*Object*/ message){
|
||
|
// summary:
|
||
|
// Publish a message for this widget/topic
|
||
|
dojo.publish(this.id, [dojo.mixin({tree: this, event: topicName}, message||{})]);
|
||
|
},
|
||
|
|
||
|
postMixInProperties: function(){
|
||
|
this.tree = this;
|
||
|
|
||
|
this._itemNodeMap={};
|
||
|
|
||
|
if(!this.cookieName){
|
||
|
this.cookieName = this.id + "SaveStateCookie";
|
||
|
}
|
||
|
|
||
|
// TODO: this.inherited(arguments)
|
||
|
},
|
||
|
|
||
|
postCreate: function(){
|
||
|
this._initState();
|
||
|
|
||
|
// Create glue between store and Tree, if not specified directly by user
|
||
|
if(!this.model){
|
||
|
this._store2model();
|
||
|
}
|
||
|
|
||
|
// monitor changes to items
|
||
|
this.connect(this.model, "onChange", "_onItemChange");
|
||
|
this.connect(this.model, "onChildrenChange", "_onItemChildrenChange");
|
||
|
this.connect(this.model, "onDelete", "_onItemDelete");
|
||
|
|
||
|
this._load();
|
||
|
|
||
|
this.inherited(arguments);
|
||
|
|
||
|
if(this.dndController){
|
||
|
if(dojo.isString(this.dndController)){
|
||
|
this.dndController = dojo.getObject(this.dndController);
|
||
|
}
|
||
|
var params={};
|
||
|
for (var i=0; i<this.dndParams.length;i++){
|
||
|
if(this[this.dndParams[i]]){
|
||
|
params[this.dndParams[i]] = this[this.dndParams[i]];
|
||
|
}
|
||
|
}
|
||
|
this.dndController = new this.dndController(this, params);
|
||
|
}
|
||
|
},
|
||
|
|
||
|
_store2model: function(){
|
||
|
// summary:
|
||
|
// User specified a store&query rather than model, so create model from store/query
|
||
|
this._v10Compat = true;
|
||
|
dojo.deprecated("Tree: from version 2.0, should specify a model object rather than a store/query");
|
||
|
|
||
|
var modelParams = {
|
||
|
id: this.id + "_ForestStoreModel",
|
||
|
store: this.store,
|
||
|
query: this.query,
|
||
|
childrenAttrs: this.childrenAttr
|
||
|
};
|
||
|
|
||
|
// Only override the model's mayHaveChildren() method if the user has specified an override
|
||
|
if(this.params.mayHaveChildren){
|
||
|
modelParams.mayHaveChildren = dojo.hitch(this, "mayHaveChildren");
|
||
|
}
|
||
|
|
||
|
if(this.params.getItemChildren){
|
||
|
modelParams.getChildren = dojo.hitch(this, function(item, onComplete, onError){
|
||
|
this.getItemChildren((this._v10Compat && item === this.model.root) ? null : item, onComplete, onError);
|
||
|
});
|
||
|
}
|
||
|
this.model = new dijit.tree.ForestStoreModel(modelParams);
|
||
|
|
||
|
// For backwards compatibility, the visibility of the root node is controlled by
|
||
|
// whether or not the user has specified a label
|
||
|
this.showRoot = Boolean(this.label);
|
||
|
},
|
||
|
|
||
|
_load: function(){
|
||
|
// summary:
|
||
|
// Initial load of the tree.
|
||
|
// Load root node (possibly hidden) and it's children.
|
||
|
this.model.getRoot(
|
||
|
dojo.hitch(this, function(item){
|
||
|
var rn = this.rootNode = this.tree._createTreeNode({
|
||
|
item: item,
|
||
|
tree: this,
|
||
|
isExpandable: true,
|
||
|
label: this.label || this.getLabel(item),
|
||
|
indent: this.showRoot ? 0 : -1
|
||
|
});
|
||
|
if(!this.showRoot){
|
||
|
rn.rowNode.style.display="none";
|
||
|
}
|
||
|
this.domNode.appendChild(rn.domNode);
|
||
|
this._itemNodeMap[this.model.getIdentity(item)] = rn;
|
||
|
|
||
|
rn._updateLayout(); // sets "dijitTreeIsRoot" CSS classname
|
||
|
|
||
|
// load top level children
|
||
|
this._expandNode(rn);
|
||
|
}),
|
||
|
function(err){
|
||
|
console.error(this, ": error loading root: ", err);
|
||
|
}
|
||
|
);
|
||
|
},
|
||
|
|
||
|
////////////// Data store related functions //////////////////////
|
||
|
// These just get passed to the model; they are here for back-compat
|
||
|
|
||
|
mayHaveChildren: function(/*dojo.data.Item*/ item){
|
||
|
// summary:
|
||
|
// Deprecated. This should be specified on the model itself.
|
||
|
//
|
||
|
// Overridable function to tell if an item has or may have children.
|
||
|
// Controls whether or not +/- expando icon is shown.
|
||
|
// (For efficiency reasons we may not want to check if an element actually
|
||
|
// has children until user clicks the expando node)
|
||
|
// tags:
|
||
|
// deprecated
|
||
|
},
|
||
|
|
||
|
getItemChildren: function(/*dojo.data.Item*/ parentItem, /*function(items)*/ onComplete){
|
||
|
// summary:
|
||
|
// Deprecated. This should be specified on the model itself.
|
||
|
//
|
||
|
// Overridable function that return array of child items of given parent item,
|
||
|
// or if parentItem==null then return top items in tree
|
||
|
// tags:
|
||
|
// deprecated
|
||
|
},
|
||
|
|
||
|
///////////////////////////////////////////////////////
|
||
|
// Functions for converting an item to a TreeNode
|
||
|
getLabel: function(/*dojo.data.Item*/ item){
|
||
|
// summary:
|
||
|
// Overridable function to get the label for a tree node (given the item)
|
||
|
// tags:
|
||
|
// extension
|
||
|
return this.model.getLabel(item); // String
|
||
|
},
|
||
|
|
||
|
getIconClass: function(/*dojo.data.Item*/ item, /*Boolean*/ opened){
|
||
|
// summary:
|
||
|
// Overridable function to return CSS class name to display icon
|
||
|
// tags:
|
||
|
// extension
|
||
|
return (!item || this.model.mayHaveChildren(item)) ? (opened ? "dijitFolderOpened" : "dijitFolderClosed") : "dijitLeaf"
|
||
|
},
|
||
|
|
||
|
getLabelClass: function(/*dojo.data.Item*/ item, /*Boolean*/ opened){
|
||
|
// summary:
|
||
|
// Overridable function to return CSS class name to display label
|
||
|
// tags:
|
||
|
// extension
|
||
|
},
|
||
|
|
||
|
getIconStyle: function(/*dojo.data.Item*/ item, /*Boolean*/ opened){
|
||
|
// summary:
|
||
|
// Overridable function to return CSS styles to display icon
|
||
|
// returns:
|
||
|
// Object suitable for input to dojo.style() like {backgroundImage: "url(...)"}
|
||
|
// tags:
|
||
|
// extension
|
||
|
},
|
||
|
|
||
|
getLabelStyle: function(/*dojo.data.Item*/ item, /*Boolean*/ opened){
|
||
|
// summary:
|
||
|
// Overridable function to return CSS styles to display label
|
||
|
// returns:
|
||
|
// Object suitable for input to dojo.style() like {color: "red", background: "green"}
|
||
|
// tags:
|
||
|
// extension
|
||
|
},
|
||
|
|
||
|
/////////// Keyboard and Mouse handlers ////////////////////
|
||
|
|
||
|
_onKeyPress: function(/*Event*/ e){
|
||
|
// summary:
|
||
|
// Translates keypress events into commands for the controller
|
||
|
if(e.altKey){ return; }
|
||
|
var dk = dojo.keys;
|
||
|
var treeNode = dijit.getEnclosingWidget(e.target);
|
||
|
if(!treeNode){ return; }
|
||
|
|
||
|
var key = e.charOrCode;
|
||
|
if(typeof key == "string"){ // handle printables (letter navigation)
|
||
|
// Check for key navigation.
|
||
|
if(!e.altKey && !e.ctrlKey && !e.shiftKey && !e.metaKey){
|
||
|
this._onLetterKeyNav( { node: treeNode, key: key.toLowerCase() } );
|
||
|
dojo.stopEvent(e);
|
||
|
}
|
||
|
}else{ // handle non-printables (arrow keys)
|
||
|
var map = this._keyHandlerMap;
|
||
|
if(!map){
|
||
|
// setup table mapping keys to events
|
||
|
map = {};
|
||
|
map[dk.ENTER]="_onEnterKey";
|
||
|
map[this.isLeftToRight() ? dk.LEFT_ARROW : dk.RIGHT_ARROW]="_onLeftArrow";
|
||
|
map[this.isLeftToRight() ? dk.RIGHT_ARROW : dk.LEFT_ARROW]="_onRightArrow";
|
||
|
map[dk.UP_ARROW]="_onUpArrow";
|
||
|
map[dk.DOWN_ARROW]="_onDownArrow";
|
||
|
map[dk.HOME]="_onHomeKey";
|
||
|
map[dk.END]="_onEndKey";
|
||
|
this._keyHandlerMap = map;
|
||
|
}
|
||
|
if(this._keyHandlerMap[key]){
|
||
|
this[this._keyHandlerMap[key]]( { node: treeNode, item: treeNode.item } );
|
||
|
dojo.stopEvent(e);
|
||
|
}
|
||
|
}
|
||
|
},
|
||
|
|
||
|
_onEnterKey: function(/*Object*/ message){
|
||
|
this._publish("execute", { item: message.item, node: message.node} );
|
||
|
this.onClick(message.item, message.node);
|
||
|
},
|
||
|
|
||
|
_onDownArrow: function(/*Object*/ message){
|
||
|
// summary: down arrow pressed; get next visible node, set focus there
|
||
|
var node = this._getNextNode(message.node);
|
||
|
if(node && node.isTreeNode){
|
||
|
this.focusNode(node);
|
||
|
}
|
||
|
},
|
||
|
|
||
|
_onUpArrow: function(/*Object*/ message){
|
||
|
// summary:
|
||
|
// Up arrow pressed; move to previous visible node
|
||
|
|
||
|
var node = message.node;
|
||
|
|
||
|
// if younger siblings
|
||
|
var previousSibling = node.getPreviousSibling();
|
||
|
if(previousSibling){
|
||
|
node = previousSibling;
|
||
|
// if the previous node is expanded, dive in deep
|
||
|
while(node.isExpandable && node.isExpanded && node.hasChildren()){
|
||
|
// move to the last child
|
||
|
var children = node.getChildren();
|
||
|
node = children[children.length-1];
|
||
|
}
|
||
|
}else{
|
||
|
// if this is the first child, return the parent
|
||
|
// unless the parent is the root of a tree with a hidden root
|
||
|
var parent = node.getParent();
|
||
|
if(!(!this.showRoot && parent === this.rootNode)){
|
||
|
node = parent;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
if(node && node.isTreeNode){
|
||
|
this.focusNode(node);
|
||
|
}
|
||
|
},
|
||
|
|
||
|
_onRightArrow: function(/*Object*/ message){
|
||
|
// summary:
|
||
|
// Right arrow pressed; go to child node
|
||
|
var node = message.node;
|
||
|
|
||
|
// if not expanded, expand, else move to 1st child
|
||
|
if(node.isExpandable && !node.isExpanded){
|
||
|
this._expandNode(node);
|
||
|
}else if(node.hasChildren()){
|
||
|
node = node.getChildren()[0];
|
||
|
if(node && node.isTreeNode){
|
||
|
this.focusNode(node);
|
||
|
}
|
||
|
}
|
||
|
},
|
||
|
|
||
|
_onLeftArrow: function(/*Object*/ message){
|
||
|
// summary:
|
||
|
// Left arrow pressed.
|
||
|
// If not collapsed, collapse, else move to parent.
|
||
|
|
||
|
var node = message.node;
|
||
|
|
||
|
if(node.isExpandable && node.isExpanded){
|
||
|
this._collapseNode(node);
|
||
|
}else{
|
||
|
var parent = node.getParent();
|
||
|
if(parent && parent.isTreeNode && !(!this.showRoot && parent === this.rootNode)){
|
||
|
this.focusNode(parent);
|
||
|
}
|
||
|
}
|
||
|
},
|
||
|
|
||
|
_onHomeKey: function(){
|
||
|
// summary:
|
||
|
// Home key pressed; get first visible node, and set focus there
|
||
|
var node = this._getRootOrFirstNode();
|
||
|
if(node){
|
||
|
this.focusNode(node);
|
||
|
}
|
||
|
},
|
||
|
|
||
|
_onEndKey: function(/*Object*/ message){
|
||
|
// summary:
|
||
|
// End key pressed; go to last visible node.
|
||
|
|
||
|
var node = this.rootNode;
|
||
|
while(node.isExpanded){
|
||
|
var c = node.getChildren();
|
||
|
node = c[c.length - 1];
|
||
|
}
|
||
|
|
||
|
if(node && node.isTreeNode){
|
||
|
this.focusNode(node);
|
||
|
}
|
||
|
},
|
||
|
|
||
|
_onLetterKeyNav: function(message){
|
||
|
// summary:
|
||
|
// Letter key pressed; search for node starting with first char = key
|
||
|
var node = message.node, startNode = node,
|
||
|
key = message.key;
|
||
|
do{
|
||
|
node = this._getNextNode(node);
|
||
|
//check for last node, jump to first node if necessary
|
||
|
if(!node){
|
||
|
node = this._getRootOrFirstNode();
|
||
|
}
|
||
|
}while(node !== startNode && (node.label.charAt(0).toLowerCase() != key));
|
||
|
if(node && node.isTreeNode){
|
||
|
// no need to set focus if back where we started
|
||
|
if(node !== startNode){
|
||
|
this.focusNode(node);
|
||
|
}
|
||
|
}
|
||
|
},
|
||
|
|
||
|
_onClick: function(/*Event*/ e){
|
||
|
// summary:
|
||
|
// Translates click events into commands for the controller to process
|
||
|
var domElement = e.target;
|
||
|
|
||
|
// find node
|
||
|
var nodeWidget = dijit.getEnclosingWidget(domElement);
|
||
|
if(!nodeWidget || !nodeWidget.isTreeNode){
|
||
|
return;
|
||
|
}
|
||
|
|
||
|
if( (this.openOnClick && nodeWidget.isExpandable) ||
|
||
|
(domElement == nodeWidget.expandoNode || domElement == nodeWidget.expandoNodeText) ){
|
||
|
// expando node was clicked, or label of a folder node was clicked; open it
|
||
|
if(nodeWidget.isExpandable){
|
||
|
this._onExpandoClick({node:nodeWidget});
|
||
|
}
|
||
|
}else{
|
||
|
this._publish("execute", { item: nodeWidget.item, node: nodeWidget} );
|
||
|
this.onClick(nodeWidget.item, nodeWidget);
|
||
|
this.focusNode(nodeWidget);
|
||
|
}
|
||
|
dojo.stopEvent(e);
|
||
|
},
|
||
|
_onDblClick: function(/*Event*/ e){
|
||
|
// summary:
|
||
|
// Translates double-click events into commands for the controller to process
|
||
|
var domElement = e.target;
|
||
|
|
||
|
// find node
|
||
|
var nodeWidget = dijit.getEnclosingWidget(domElement);
|
||
|
if(!nodeWidget || !nodeWidget.isTreeNode){
|
||
|
return;
|
||
|
}
|
||
|
|
||
|
if( (this.openOnDblClick && nodeWidget.isExpandable) ||
|
||
|
(domElement == nodeWidget.expandoNode || domElement == nodeWidget.expandoNodeText) ){
|
||
|
// expando node was clicked, or label of a folder node was clicked; open it
|
||
|
if(nodeWidget.isExpandable){
|
||
|
this._onExpandoClick({node:nodeWidget});
|
||
|
}
|
||
|
}else{
|
||
|
this._publish("execute", { item: nodeWidget.item, node: nodeWidget} );
|
||
|
this.onDblClick(nodeWidget.item, nodeWidget);
|
||
|
this.focusNode(nodeWidget);
|
||
|
}
|
||
|
dojo.stopEvent(e);
|
||
|
},
|
||
|
|
||
|
_onExpandoClick: function(/*Object*/ message){
|
||
|
// summary:
|
||
|
// User clicked the +/- icon; expand or collapse my children.
|
||
|
var node = message.node;
|
||
|
|
||
|
// If we are collapsing, we might be hiding the currently focused node.
|
||
|
// Also, clicking the expando node might have erased focus from the current node.
|
||
|
// For simplicity's sake just focus on the node with the expando.
|
||
|
this.focusNode(node);
|
||
|
|
||
|
if(node.isExpanded){
|
||
|
this._collapseNode(node);
|
||
|
}else{
|
||
|
this._expandNode(node);
|
||
|
}
|
||
|
},
|
||
|
|
||
|
onClick: function(/* dojo.data */ item, /*TreeNode*/ node){
|
||
|
// summary:
|
||
|
// Callback when a tree node is clicked
|
||
|
// tags:
|
||
|
// callback
|
||
|
},
|
||
|
onDblClick: function(/* dojo.data */ item, /*TreeNode*/ node){
|
||
|
// summary:
|
||
|
// Callback when a tree node is double-clicked
|
||
|
// tags:
|
||
|
// callback
|
||
|
},
|
||
|
onOpen: function(/* dojo.data */ item, /*TreeNode*/ node){
|
||
|
// summary:
|
||
|
// Callback when a node is opened
|
||
|
// tags:
|
||
|
// callback
|
||
|
},
|
||
|
onClose: function(/* dojo.data */ item, /*TreeNode*/ node){
|
||
|
// summary:
|
||
|
// Callback when a node is closed
|
||
|
// tags:
|
||
|
// callback
|
||
|
},
|
||
|
|
||
|
_getNextNode: function(node){
|
||
|
// summary:
|
||
|
// Get next visible node
|
||
|
|
||
|
if(node.isExpandable && node.isExpanded && node.hasChildren()){
|
||
|
// if this is an expanded node, get the first child
|
||
|
return node.getChildren()[0]; // _TreeNode
|
||
|
}else{
|
||
|
// find a parent node with a sibling
|
||
|
while(node && node.isTreeNode){
|
||
|
var returnNode = node.getNextSibling();
|
||
|
if(returnNode){
|
||
|
return returnNode; // _TreeNode
|
||
|
}
|
||
|
node = node.getParent();
|
||
|
}
|
||
|
return null;
|
||
|
}
|
||
|
},
|
||
|
|
||
|
_getRootOrFirstNode: function(){
|
||
|
// summary:
|
||
|
// Get first visible node
|
||
|
return this.showRoot ? this.rootNode : this.rootNode.getChildren()[0];
|
||
|
},
|
||
|
|
||
|
_collapseNode: function(/*_TreeNode*/ node){
|
||
|
// summary:
|
||
|
// Called when the user has requested to collapse the node
|
||
|
|
||
|
if(node.isExpandable){
|
||
|
if(node.state == "LOADING"){
|
||
|
// ignore clicks while we are in the process of loading data
|
||
|
return;
|
||
|
}
|
||
|
|
||
|
node.collapse();
|
||
|
this.onClose(node.item, node);
|
||
|
|
||
|
if(node.item){
|
||
|
this._state(node.item,false);
|
||
|
this._saveState();
|
||
|
}
|
||
|
}
|
||
|
},
|
||
|
|
||
|
_expandNode: function(/*_TreeNode*/ node){
|
||
|
// summary:
|
||
|
// Called when the user has requested to expand the node
|
||
|
|
||
|
if(!node.isExpandable){
|
||
|
return;
|
||
|
}
|
||
|
|
||
|
var model = this.model,
|
||
|
item = node.item;
|
||
|
|
||
|
switch(node.state){
|
||
|
case "LOADING":
|
||
|
// ignore clicks while we are in the process of loading data
|
||
|
return;
|
||
|
|
||
|
case "UNCHECKED":
|
||
|
// need to load all the children, and then expand
|
||
|
node.markProcessing();
|
||
|
var _this = this;
|
||
|
model.getChildren(item, function(items){
|
||
|
node.unmarkProcessing();
|
||
|
node.setChildItems(items);
|
||
|
_this._expandNode(node);
|
||
|
},
|
||
|
function(err){
|
||
|
console.error(_this, ": error loading root children: ", err);
|
||
|
});
|
||
|
break;
|
||
|
|
||
|
default:
|
||
|
// data is already loaded; just proceed
|
||
|
node.expand();
|
||
|
this.onOpen(node.item, node);
|
||
|
|
||
|
if(item){
|
||
|
this._state(item,true);
|
||
|
this._saveState();
|
||
|
}
|
||
|
}
|
||
|
},
|
||
|
|
||
|
////////////////// Miscellaneous functions ////////////////
|
||
|
|
||
|
focusNode: function(/* _tree.Node */ node){
|
||
|
// summary:
|
||
|
// Focus on the specified node (which must be visible)
|
||
|
// tags:
|
||
|
// protected
|
||
|
|
||
|
// set focus so that the label will be voiced using screen readers
|
||
|
node.labelNode.focus();
|
||
|
},
|
||
|
|
||
|
_onNodeFocus: function(/*Widget*/ node){
|
||
|
// summary:
|
||
|
// Called when a TreeNode gets focus, either by user clicking
|
||
|
// it, or programatically by arrow key handling code.
|
||
|
// description:
|
||
|
// It marks that the current node is the selected one, and the previously
|
||
|
// selected node no longer is.
|
||
|
|
||
|
if (node){
|
||
|
if(node != this.lastFocused){
|
||
|
// mark that the previously selected node is no longer the selected one
|
||
|
this.lastFocused.setSelected(false);
|
||
|
}
|
||
|
|
||
|
// mark that the new node is the currently selected one
|
||
|
node.setSelected(true);
|
||
|
this.lastFocused = node;
|
||
|
}
|
||
|
},
|
||
|
|
||
|
_onNodeMouseEnter: function(/*Widget*/ node){
|
||
|
// summary:
|
||
|
// Called when mouse is over a node (onmouseenter event)
|
||
|
},
|
||
|
|
||
|
_onNodeMouseLeave: function(/*Widget*/ node){
|
||
|
// summary:
|
||
|
// Called when mouse is over a node (onmouseenter event)
|
||
|
},
|
||
|
|
||
|
//////////////// Events from the model //////////////////////////
|
||
|
|
||
|
_onItemChange: function(/*Item*/ item){
|
||
|
// summary:
|
||
|
// Processes notification of a change to an item's scalar values like label
|
||
|
var model = this.model,
|
||
|
identity = model.getIdentity(item),
|
||
|
node = this._itemNodeMap[identity];
|
||
|
|
||
|
if(node){
|
||
|
node.setLabelNode(this.getLabel(item));
|
||
|
node._updateItemClasses(item);
|
||
|
}
|
||
|
},
|
||
|
|
||
|
_onItemChildrenChange: function(/*dojo.data.Item*/ parent, /*dojo.data.Item[]*/ newChildrenList){
|
||
|
// summary:
|
||
|
// Processes notification of a change to an item's children
|
||
|
var model = this.model,
|
||
|
identity = model.getIdentity(parent),
|
||
|
parentNode = this._itemNodeMap[identity];
|
||
|
|
||
|
if(parentNode){
|
||
|
parentNode.setChildItems(newChildrenList);
|
||
|
}
|
||
|
},
|
||
|
|
||
|
_onItemDelete: function(/*Item*/ item){
|
||
|
// summary:
|
||
|
// Processes notification of a deletion of an item
|
||
|
var model = this.model,
|
||
|
identity = model.getIdentity(item),
|
||
|
node = this._itemNodeMap[identity];
|
||
|
|
||
|
if(node){
|
||
|
var parent = node.getParent();
|
||
|
if(parent){
|
||
|
// if node has not already been orphaned from a _onSetItem(parent, "children", ..) call...
|
||
|
parent.removeChild(node);
|
||
|
}
|
||
|
node.destroyRecursive();
|
||
|
delete this._itemNodeMap[identity];
|
||
|
}
|
||
|
},
|
||
|
|
||
|
/////////////// Miscellaneous funcs
|
||
|
|
||
|
_initState: function(){
|
||
|
// summary:
|
||
|
// Load in which nodes should be opened automatically
|
||
|
if(this.persist){
|
||
|
var cookie = dojo.cookie(this.cookieName);
|
||
|
this._openedItemIds = {};
|
||
|
if(cookie){
|
||
|
dojo.forEach(cookie.split(','), function(item){
|
||
|
this._openedItemIds[item] = true;
|
||
|
}, this);
|
||
|
}
|
||
|
}
|
||
|
},
|
||
|
_state: function(item,expanded){
|
||
|
// summary:
|
||
|
// Query or set expanded state for an item,
|
||
|
if(!this.persist){
|
||
|
return false;
|
||
|
}
|
||
|
var id=this.model.getIdentity(item);
|
||
|
if(arguments.length===1){
|
||
|
return this._openedItemIds[id];
|
||
|
}
|
||
|
if(expanded){
|
||
|
this._openedItemIds[id] = true;
|
||
|
}else{
|
||
|
delete this._openedItemIds[id];
|
||
|
}
|
||
|
},
|
||
|
_saveState: function(){
|
||
|
// summary:
|
||
|
// Create and save a cookie with the currently expanded nodes identifiers
|
||
|
if(!this.persist){
|
||
|
return;
|
||
|
}
|
||
|
var ary = [];
|
||
|
for(var id in this._openedItemIds){
|
||
|
ary.push(id);
|
||
|
}
|
||
|
dojo.cookie(this.cookieName, ary.join(","), {expires:365});
|
||
|
},
|
||
|
|
||
|
destroy: function(){
|
||
|
if(this.rootNode){
|
||
|
this.rootNode.destroyRecursive();
|
||
|
}
|
||
|
if(this.dndController && !dojo.isString(this.dndController)){
|
||
|
this.dndController.destroy();
|
||
|
}
|
||
|
this.rootNode = null;
|
||
|
this.inherited(arguments);
|
||
|
},
|
||
|
|
||
|
destroyRecursive: function(){
|
||
|
// A tree is treated as a leaf, not as a node with children (like a grid),
|
||
|
// but defining destroyRecursive for back-compat.
|
||
|
this.destroy();
|
||
|
},
|
||
|
|
||
|
_createTreeNode: function(/*Object*/ args){
|
||
|
// summary:
|
||
|
// creates a TreeNode
|
||
|
// description:
|
||
|
// Developers can override this method to define their own TreeNode class;
|
||
|
// However it will probably be removed in a future release in favor of a way
|
||
|
// of just specifying a widget for the label, rather than one that contains
|
||
|
// the children too.
|
||
|
return new dijit._TreeNode(args);
|
||
|
}
|
||
|
});
|
||
|
|
||
|
// For back-compat. TODO: remove in 2.0
|
||
|
dojo.require("dijit.tree.TreeStoreModel");
|
||
|
dojo.require("dijit.tree.ForestStoreModel");
|