transfer treeview checkbox

 

<script>

            function getNodeFromNodes(objNodes)
            {
                var objID=objNodes.getAttribute("ID");
                objID=objID.substring(0,objID.indexOf("Nodes"))+"CheckBox";
                var objNode=document.getElementById(objID);
                return objNode;
            }
            function getNodesFromNode(objNode)
            {
                var objID=objNode.getAttribute("ID");
                objID=objID.substring(0,objID.indexOf("CheckBox"))+"Nodes";
                var objNodes=document.getElementById(objID);
                return objNodes;
            }

            function getParentByTagName(element, tagName)
            {
                var parent = element.parentNode;
                var upperTagName = tagName.toUpperCase();
                while (parent && (parent.tagName.toUpperCase() != upperTagName))
                {
                    parent = parent.parentNode ? parent.parentNode : parent.parentElement;
                }
                return parent;
            }

            function getChildCheckState(parentNode,type)
            {
                var parentNodes
                if(type==0)
                {
                    parentNodes=getNodesFromNode(parentNode)
                }
                else
                {
                    parentNodes=parentNode
                }
                if(parentNodes==null || parentNodes == "undefined")
                    return true;
                for(var i=0; i<parentNodes.children.length; i++)
                {
                    var childNode = parentNodes.children[i];
                    if(childNode.tagName=="INPUT" && childNode.type=="checkbox")                    
                    {
                        if(childNode.checked==false)
                            return false;
                    }
                    else
                    {
                        var returnState=getChildCheckState(childNode,1);
                        if(returnState==false)
                            return false;
                    }
                }
                return true;                
            }

            function checkParent(parentNode)
            {
                if(getChildCheckState(parentNode,0)==true)
                    parentNode.checked=true
                else
                    return;
                var objParentNodes = getParentByTagName(parentNode,"div");                
                if(objParentNodes==null || objParentNodes == "undefined")
                    return;
                var objParentNode=getNodeFromNodes(objParentNodes);
                if(objParentNode==null || objParentNode == "undefined")
                    return;
                if(objParentNode.tagName!="INPUT" && objParentNode.type == "checkbox")
                    return;
                checkParent(objParentNode);
            }

            function setParentNodeState(childNode,checkState)
            {
                var objParentNodes = getParentByTagName(childNode,"div");
                if(objParentNodes==null || objParentNodes == "undefined")
                    return;
                var objParentNode = getNodeFromNodes(objParentNodes);
                if(objParentNode==null || objParentNode == "undefined")
                    return;
                if(objParentNode.tagName!="INPUT" && objParentNode.type == "checkbox")
                    return;
                if(checkState==true)
                {
                    checkParent(objParentNode)
                }
                else
                {
                    objParentNode.checked = false;
                    setParentNodeState(objParentNode,false);
                }           
            }
            function setChildNodeState(parentNodes,checkState)
            {
                for(var i=0; i<parentNodes.children.length; i++)
                {
                    var childNode = parentNodes.children[i];
                    if(childNode.tagName=="INPUT" && childNode.type=="checkbox")                    
                        childNode.checked = checkState;                          
                    setChildNodeState(childNode, checkState);
                }                    
            }
            function TransferCheck()
            {     

                var objNode = event.srcElement; 
                if(objNode==null || objNode=="undefined")
                    return;
                if(objNode.tagName!="INPUT" || objNode.type!="checkbox")
                    return;
                               
                var objNodes = getNodesFromNode(objNode);
                if(objNodes==null || objNodes == "undefined")
                {
                    setParentNodeState(objNode,objNode.checked);
                }
                else
                {
                    setChildNodeState(objNodes,objNode.checked);
                    setParentNodeState(objNode,objNode.checked);
                }

            }

    </script>