easyui-tree 清空树 加载树 勾选树 保存树

easyui-tree树

清空树：

    //清空树
    function LoadEmptyTree() {
        $("#myTree").tree('loadData', []);
    }

加载树：

//加载选中权限的控件树
    function LoadSavedTree() {
        $("#div_FW_Edit").show();
        $("#div_FW_Save").hide();
        var rows = $("#DataGrid").datagrid("getSelections");
        if (rows.length == 1) {
            var id = rows[0].PermissionID;
            $.ajax({
                type: "GET",
                data: {
                    PermissionID: id,
                },
                url: "/Rights/Execute/LoadSavedTree",
                success: function (result) {
                    if (result != '') {
                        var myJson = eval('(' + result + ')');
                        $("#myTree").tree({
                            data: myJson,
                            onlyLeafCheck: false,//仅叶子节点可以被选中
                            checkbox: false,//开启多选框
                        });
                    }
                    else {           
                        LoadEmptyTree();//当前权限不包含任何控件，清空树
                    }
                }
            });
        }
        else {
            LoadTree();
        }
    }

自动勾选选中项目：

function EditTree() {
        $("#div_FW_Edit").hide();
        $("#div_FW_Save").show();
        $.ajax({
            type: "GET",
            url: "/Rights/Execute/GetTreeJson",
            success: function (result) {
                //加载全部tree
                var myJson = eval('(' + result + ')');
                $("#myTree").tree({
                    data: myJson,
                    onlyLeafCheck: true,//仅叶子节点可以被选中
                    checkbox: true,//开启多选框
                });
                //自动勾选选中项目
                var root = $("#myTree").tree("getRoot");
                $("#myTree").tree("uncheck", root.target);
                var rows = $("#DataGrid").datagrid("getSelections");
                var id = rows[0].PermissionID;
                $.ajax({
                    url: "/Rights/Execute/BindTree",
                    data: {
                        PermissionID: id,
                    },
                    success: function (data) {
                        for (x in data) {
                            //alert(data[x].ControlID);
                            var node = $("#myTree").tree("find", data[x].ControlID);
                            $("#myTree").tree("check", node.target);
                        }
                    }
                });
            }
        });
    }

保存勾选的tree

$(function () {
        $("#btn_FW_Save").click(
            function () {
                var rows = $("#DataGrid").datagrid("getSelections");
                if (rows.length != 1) {
                    alert("请左边列表中选择一个[权限]！");
                    return;
                } else {
                    var id = rows[0].PermissionID;
                    var nodes = $("#myTree").tree("getChecked");
                    var res_id = '';
                    for (var i = 0; i < nodes.length; i++) {
                        if (res_id != '') res_id += ',';
                        res_id += nodes[i].id;
                    }
                    if (res_id == '') {
                        alert("请选择[控件]!");
                        return;
                    }
                    $.ajax({
                        url: "/Rights/Execute/SaveTree",
                        data: {
                            PermissionID: id,
                            ControlID: res_id,
                        },
                        success: function (data) {
                            if (data == "OK") {
                                alert("修改成功!");                             
                                LoadSavedTree();                                
                            }
                            else {
                                alert(data);
                            }
                        }
                    });
                }
            });
    });