treeview.js

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/*
 Copyright (c) 2006, Yahoo! Inc. All rights reserved.
 Code licensed under the BSD License:
 http://developer.yahoo.net/yui/license.txt
 version: 0.12.0
 
 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED
 WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
 PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
 ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
 TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
YAHOO.widget.TreeView=function(id){if(id){this.init(id);}};YAHOO.widget.TreeView.prototype={id:null,_el:null,_nodes:null,locked:false,_expandAnim:null,_collapseAnim:null,_animCount:0,maxAnim:2,setExpandAnim:function(type){if(YAHOO.widget.TVAnim.isValid(type)){this._expandAnim=type;}},setCollapseAnim:function(type){if(YAHOO.widget.TVAnim.isValid(type)){this._collapseAnim=type;}},animateExpand:function(el,node){if(this._expandAnim&&this._animCount<this.maxAnim){var tree=this;var a=YAHOO.widget.TVAnim.getAnim(this._expandAnim,el,function(){tree.expandComplete(node);});if(a){++this._animCount;this.fireEvent("animStart",{"node":node,"type":"expand"});a.animate();}
return true;}
return false;},animateCollapse:function(el,node){if(this._collapseAnim&&this._animCount<this.maxAnim){var tree=this;var a=YAHOO.widget.TVAnim.getAnim(this._collapseAnim,el,function(){tree.collapseComplete(node);});if(a){++this._animCount;this.fireEvent("animStart",{"node":node,"type":"collapse"});a.animate();}
return true;}
return false;},expandComplete:function(node){--this._animCount;this.fireEvent("animComplete",{"node":node,"type":"expand"});},collapseComplete:function(node){--this._animCount;this.fireEvent("animComplete",{"node":node,"type":"collapse"});},init:function(id){this.id=id;if("string"!==typeof id){this._el=id;this.id=this.generateId(id);}
this.createEvent("animStart",this);this.createEvent("animComplete",this);this.createEvent("collapse",this);this.createEvent("expand",this);this._nodes=[];YAHOO.widget.TreeView.trees[this.id]=this;this.root=new YAHOO.widget.RootNode(this);},getEl:function(){if(!this._el){this._el=document.getElementById(this.id);}
return this._el;},draw:function(){var html=this.root.getHtml();this.getEl().innerHTML=html;this.firstDraw=false;},regNode:function(node){this._nodes[node.index]=node;},getRoot:function(){return this.root;},setDynamicLoad:function(fnDataLoader,iconMode){this.root.setDynamicLoad(fnDataLoader,iconMode);},expandAll:function(){if(!this.locked){this.root.expandAll();}},collapseAll:function(){if(!this.locked){this.root.collapseAll();}},getNodeByIndex:function(nodeIndex){var n=this._nodes[nodeIndex];return(n)?n:null;},getNodeByProperty:function(property,value){for(var i in this._nodes){var n=this._nodes[i];if(n.data&&value==n.data[property]){return n;}}
return null;},getNodesByProperty:function(property,value){var values=[];for(var i in this._nodes){var n=this._nodes[i];if(n.data&&value==n.data[property]){values.push(n);}}
return(values.length)?values:null;},removeNode:function(node,autoRefresh){if(node.isRoot()){return false;}
var p=node.parent;if(p.parent){p=p.parent;}
this._deleteNode(node);if(autoRefresh&&p&&p.childrenRendered){p.refresh();}
return true;},removeChildren:function(node){while(node.children.length){this._deleteNode(node.children[0]);}
node.childrenRendered=false;node.dynamicLoadComplete=false;if(node.expanded){node.collapse();}else{node.updateIcon();}},_deleteNode:function(node){this.removeChildren(node);this.popNode(node);},popNode:function(node){var p=node.parent;var a=[];for(var i=0,len=p.children.length;i<len;++i){if(p.children[i]!=node){a[a.length]=p.children[i];}}
p.children=a;p.childrenRendered=false;if(node.previousSibling){node.previousSibling.nextSibling=node.nextSibling;}
if(node.nextSibling){node.nextSibling.previousSibling=node.previousSibling;}
node.parent=null;node.previousSibling=null;node.nextSibling=null;node.tree=null;delete this._nodes[node.index];},toString:function(){return"TreeView "+this.id;},generateId:function(el){var id=el.id;if(!id){id="yui-tv-auto-id-"+YAHOO.widget.TreeView.counter;++YAHOO.widget.TreeView.counter;}
return id;},onExpand:function(node){},onCollapse:function(node){}};YAHOO.augment(YAHOO.widget.TreeView,YAHOO.util.EventProvider);YAHOO.widget.TreeView.nodeCount=0;YAHOO.widget.TreeView.trees=[];YAHOO.widget.TreeView.counter=0;YAHOO.widget.TreeView.getTree=function(treeId){var t=YAHOO.widget.TreeView.trees[treeId];return(t)?t:null;};YAHOO.widget.TreeView.getNode=function(treeId,nodeIndex){var t=YAHOO.widget.TreeView.getTree(treeId);return(t)?t.getNodeByIndex(nodeIndex):null;};YAHOO.widget.TreeView.addHandler=function(el,sType,fn){if(el.addEventListener){el.addEventListener(sType,fn,false);}else if(el.attachEvent){el.attachEvent("on"+sType,fn);}};YAHOO.widget.TreeView.removeHandler=function(el,sType,fn){if(el.removeEventListener){el.removeEventListener(sType,fn,false);}else if(el.detachEvent){el.detachEvent("on"+sType,fn);}};YAHOO.widget.TreeView.preload=function(prefix){prefix=prefix||"ygtv";var styles=["tn","tm","tmh","tp","tph","ln","lm","lmh","lp","lph","loading"];var sb=[];for(var i=0;i<styles.length;++i){sb[sb.length]='<span class="'+prefix+styles[i]+'">&#160;</span>';}
var f=document.createElement("div");var s=f.style;s.position="absolute";s.top="-1000px";s.left="-1000px";f.innerHTML=sb.join("");document.body.appendChild(f);YAHOO.widget.TreeView.removeHandler(window,"load",YAHOO.widget.TreeView.preload);};YAHOO.widget.TreeView.addHandler(window,"load",YAHOO.widget.TreeView.preload);YAHOO.widget.Node=function(oData,oParent,expanded){if(oData){this.init(oData,oParent,expanded);}};YAHOO.widget.Node.prototype={index:0,children:null,tree:null,data:null,parent:null,depth:-1,href:null,target:"_self",expanded:false,multiExpand:true,renderHidden:false,childrenRendered:false,dynamicLoadComplete:false,previousSibling:null,nextSibling:null,_dynLoad:false,dataLoader:null,isLoading:false,hasIcon:true,iconMode:0,_type:"Node",init:function(oData,oParent,expanded){this.data=oData;this.children=[];this.index=YAHOO.widget.TreeView.nodeCount;++YAHOO.widget.TreeView.nodeCount;this.expanded=expanded;this.createEvent("parentChange",this);if(oParent){oParent.appendChild(this);}},applyParent:function(parentNode){if(!parentNode){return false;}
this.tree=parentNode.tree;this.parent=parentNode;this.depth=parentNode.depth+1;if(!this.href){this.href="javascript:"+this.getToggleLink();}
if(!this.multiExpand){this.multiExpand=parentNode.multiExpand;}
this.tree.regNode(this);parentNode.childrenRendered=false;for(var i=0,len=this.children.length;i<len;++i){this.children[i].applyParent(this);}
this.fireEvent("parentChange");return true;},appendChild:function(childNode){if(this.hasChildren()){var sib=this.children[this.children.length-1];sib.nextSibling=childNode;childNode.previousSibling=sib;}
this.children[this.children.length]=childNode;childNode.applyParent(this);return childNode;},appendTo:function(parentNode){return parentNode.appendChild(this);},insertBefore:function(node){var p=node.parent;if(p){if(this.tree){this.tree.popNode(this);}
var refIndex=node.isChildOf(p);p.children.splice(refIndex,0,this);if(node.previousSibling){node.previousSibling.nextSibling=this;}
this.previousSibling=node.previousSibling;this.nextSibling=node;node.previousSibling=this;this.applyParent(p);}