Jquery Easy-UI 樹形菜單的運用

一、樹形菜單的顯示

      首先在引入easyui包的基礎上，這個要加進去<div id="menuTree" class="easyui-menu" style="width: 120px;"></div>，div中間不用寫入東西，主要就是在後面的function中進行初始化樹。

一、樹形菜單的右鍵標籤

     期中增加同級機構、增加下屬機構、修改、刪除分別是調用了addNode(),del()等方法。

<div id="menuTree" class="easyui-menu" style="width: 120px;">
        <SecurityTag:Authorize ID="Authorize12" runat="server" FunctionID="fun_AddSiblingOrg">
            <div id="miAddSibling" οnclick="addNode(1)" data-options="iconCls:'icon-add'">
                新增同級機構</div>
        </SecurityTag:Authorize>
        <SecurityTag:Authorize ID="Authorize1" runat="server" FunctionID="fun_AddChildrenOrg">
            <div id="miAddChildren" οnclick="addNode(0)" data-options="iconCls:'icon-add'">
                新增下屬機構</div>
        </SecurityTag:Authorize>
        <SecurityTag:Authorize ID="Authorize2" runat="server" FunctionID="fun_ModeifyOrg">
            <div id="miEdit" οnclick="edit()" data-options="iconCls:'icon-edit'">
                修改</div>
        </SecurityTag:Authorize>
        <SecurityTag:Authorize ID="Authorize3" runat="server" FunctionID="fun_DelOrg">
            <div class="menu-sep">
            </div>
            <div id="miDel" οnclick="del()" data-options="iconCls:'icon-no'">
                刪除</div>
        </SecurityTag:Authorize>
    </div>

至於爲什麼右鍵點擊才顯示，那就是easyui的內容了，不過有一點注意，加入權限管理標籤方便後面對這些按鈕權限的控制，這裏也可以當作不用加入這些標籤，<div class="menu-sep"></div>是增加分割線，

下面就是要在js中處理了。

<script type="text/javascript">
        $(function ()
        {
            var height = document.body.scrollHeight - document.body.scrollTop - 25 - 26;
            //alert(height);
            var objLayout = $("#layoutRegion");
            objLayout.height(height);
            objLayout.layout('resize');
            initTree();
        })


        var currentTreeNode = null;
        var parentTreeNode = null;

        var objTree = $('#ulTree');
        var objLayout = $("#layoutRegion");

        function openCenterPage(url, params)
        {
            $("#ifrContent").attr("src", url + '?1=1' + params);
        }
        function addNode(isAddSibling)
        {
            var params = "";
            if (isAddSibling == "1")
            {
                params += "&pid=" + parentTreeNode.id;
            } else
            {
                params += "&pid=" + currentTreeNode.id;
            }
            params += "&isAddSibling=" + isAddSibling;
            openCenterPage('OrgEdit.aspx', params);
        }
        function viewNode(id)
        {
            var params = "";
            params += "&id=" + id;
            openCenterPage('OrgList.aspx', params);
        }
        function del()
        {
            if (currentTreeNode.children.length > 0)
            {
                $.messager.alert("系統提示", "請先刪除下屬機構!", "info");
                return;
            }
            if (!window.confirm("確定刪除該機構嗎？"))
            {
                return;
            }

            util.ajaxForWebMethod('orgmgr.aspx/Delete', { id: currentTreeNode.id }, function (data)
            {
                //請求成功的處理
                var result = data.d;
                if (result.Code == "0")
                {
                    viewNode(parentTreeNode.id);
                    updateTree();
                    $.messager.alert("系統提示", "刪除成功!", "info");
                } else
                {
                    $.messager.alert("系統提示", result.Message, "info");
                }
            },
             function (data)
             {
                 //請求失敗的處理
                 $.messager.alert("系統提示", "刪除失敗,請與管理員聯繫。", "info");
             });
        }
        function edit()
        {
            var params = "";
            params += "&id=" + currentTreeNode.id;
            openCenterPage('OrgEdit.aspx', params);
        }
        //樹菜單狀態
        function menuStatus()
        {
            if (!currentTreeNode)
            {
                return;
            }
            var menuTree = $('#menuTree');
            //var data = objTree.tree('getData', currentTreeNode.target);
            parentTreeNode = objTree.tree('getParent', currentTreeNode.target);
            if (parentTreeNode == null)
            {
                parentTreeNode = currentTreeNode; //爲根節點時，父點與當前點爲相同
                menuTree.menu('disableItem', $('#miAddSibling')); //根節點時，不能增加同級
                menuTree.menu('disableItem', $('#miEdit')); //根節點時，不能修改
            } else
            {
                menuTree.menu('enableItem', $('#miAddSibling'));
                menuTree.menu('enableItem', $('#miEdit'));
            }
        }

        function initTree()
        {
            treeHelper.bind(objTree, 'Orgmgr.aspx/Query', { requestUser: false });
            // 右鍵點擊節點然後顯示上下文菜單
            objTree.tree({
                onClick: function (node)
                {
                    //alert(node.text);  // alert node text property when clicked
                    viewNode(node.id);
                },

                onContextMenu: function (e, node)
                {
                    e.preventDefault();
                    // 選擇節點
                    objTree.tree('select', node.target);
                    // 顯示上下文菜單
                    $('#menuTree').menu('show', {
                        left: e.pageX,
                        top: e.pageY
                    });
                    if (node == currentTreeNode)
                    {
                        return;
                    }
                    //當前結點
                    currentTreeNode = node;
                    viewNode(node.id);
                    menuStatus();
                }
            });
        }

        function updateTree()
        {
            //alert('update');
            //objTree.tree('reload', objTree.tree('getRoot'));
            treeHelper.bind(objTree, 'orgmgr.aspx/Query', { requestUser: false });
        }

        
    </script>