DEC-15891 fix: 补充唯一根节点item场景

src/case/button/treeitem/item.root.treeleaf.js

@@ -0,0 +1,72 @@
+BI.RootTreeLeafItem = BI.inherit(BI.BasicButton, {
+    _defaultConfig: function () {
+        return BI.extend(BI.RootTreeLeafItem.superclass._defaultConfig.apply(this, arguments), {
+            extraCls: "bi-root-tree-leaf-item bi-list-item-active",
+            logic: {
+                dynamic: false
+            },
+            id: "",
+            pId: "",
+            layer: 0,
+            height: 24
+        });
+    },
+    _init: function () {
+        BI.RootTreeLeafItem.superclass._init.apply(this, arguments);
+        var o = this.options;
+        this.text = BI.createWidget({
+            type: "bi.label",
+            textAlign: "left",
+            whiteSpace: "nowrap",
+            textHeight: o.height,
+            height: o.height,
+            hgap: o.hgap,
+            text: o.text,
+            value: o.value,
+            py: o.py,
+            keyword: o.keyword
+        });
+        var type = BI.LogicFactory.createLogicTypeByDirection(BI.Direction.Left);
+        var items = BI.LogicFactory.createLogicItemsByDirection(BI.Direction.Left, {
+            width: 24,
+            el: {
+                type: "bi.layout",
+                width: 24,
+                height: o.height
+            }
+        }, {
+            el: this.text
+        });
+        BI.createWidget(BI.extend({
+            element: this
+        }, BI.LogicFactory.createLogic(type, BI.extend(o.logic, {
+            items: items
+        }))));
+    },
+
+    doRedMark: function () {
+        this.text.doRedMark.apply(this.text, arguments);
+    },
+
+    unRedMark: function () {
+        this.text.unRedMark.apply(this.text, arguments);
+    },
+
+    doHighLight: function () {
+        this.text.doHighLight.apply(this.text, arguments);
+    },
+
+    unHighLight: function () {
+        this.text.unHighLight.apply(this.text, arguments);
+    },
+
+    getId: function () {
+        return this.options.id;
+    },
+
+    getPId: function () {
+        return this.options.pId;
+    }
+});
+
+BI.shortcut("bi.root_tree_leaf_item", BI.RootTreeLeafItem);

src/widget/multilayerselecttree/multilayerselecttree.leveltree.js

@@ -54,14 +54,12 @@ BI.MultiLayerSelectLevelTree = BI.inherit(BI.Pane, {
                     extend.type = "bi.multilayer_select_tree_mid_plus_group_node";
                 }
 
-
-
                 BI.defaults(node, extend);
                 self._formatItems(node.children, layer + 1, node);
             } else {
 
                 if (layer === 0 && extend.isFirstNode && extend.isLastNode) {
-                    extend.type = ""; // todo 缺一个根节点的item
+                    extend.type = "bi.root_tree_leaf_item";
                 } else if (layer === 0 && extend.isFirstNode) {
                     extend.type = "bi.multilayer_single_tree_first_tree_leaf_item";
                 } else if (extend.isLastNode) {

src/widget/multilayersingletree/multilayersingletree.leveltree.js

@@ -59,7 +59,7 @@ BI.MultiLayerSingleLevelTree = BI.inherit(BI.Pane, {
             } else {
 
                 if (layer === 0 && extend.isFirstNode && extend.isLastNode) {
-                    extend.type = ""; // todo 缺一个根节点的item
+                    extend.type = "bi.root_tree_leaf_item";
                 } else if (layer === 0 && extend.isFirstNode) {
                     extend.type = "bi.multilayer_single_tree_first_tree_leaf_item";
                 } else if (extend.isLastNode) {