修改了select的需求

src/core/minder.select.js

 // 选区管理
-kity.extendClass( Minder, {
+kity.extendClass( Minder, function(){
+    function highlightNode(km,node){
+        node.setData( "highlight", true );
+        km.renderNode( node );
+    }
+    function unhighlightNode(km,node){
+        node.setData( "highlight", false );
+        km.renderNode( node );
+    }
+    return {
         _initSelection: function () {
             this._selectedNodes = [];
         },
 
         getSelectedNodes: function () {
-        return this._selectedNodes.slice( 0 );
+            //如果没有选中节点，默认是root节点
+            if(this._selectedNodes.length == 0){
+                this._selectedNodes.push(this.getRoot())
+            }
+            //不能克隆返回，会对当前选区操作，从而影响querycommand
+            return this._selectedNodes;
+        },
+        removeAllSelectedNodes:function(){
+            utils.each(this.getSelectedNodes(),function(i,n){
+                unhighlightNode(this,n);
+            });
+            this._selectedNodes = []
         },
-
         select: function ( nodes ) {
-        var selection = this._selectedNodes;
-        if ( false === nodes instanceof Array ) nodes = [ nodes ];
-        for ( var i = 0; i < nodes.length; i++ ) {
-            if ( selection.indexOf( nodes[ i ] ) === -1 ) {
-                selection.push( nodes[ i ] );
-                this.highlightNode( nodes[ i ] );
-            }
-        }
+            this.removeAllSelectedNodes();
+            var me = this;
+            utils.each( utils.isArray(nodes) ? nodes : [nodes],function(i,n){
+                me._selectedNodes.push(n);
+                highlightNode(this,n)
+            });
             return this;
         },
-    highlightNode: function ( node ) {
-        node.setData( "highlight", true );
-        this.renderNode( node );
-    },
         isNodeSelected: function ( node ) {
-        return !!~this._selectedNodes.indexOf( node );
-    },
-
-    selectSingle: function ( node ) {
-        return this.clearSelect().select( node );
+            return node.getData('highlight') === true
         },
-
+        //当前选区中的节点在给定的节点范围内的保留选中状态，没在给定范围的取消选中，给定范围中的但没在当前选中范围的也做选中效果
         toggleSelect: function ( nodes ) {
-        var selection = this._selectedNodes;
-        var needAdd = [],
-            needRemove = [];
-        if ( false === nodes instanceof Array ) nodes = [ nodes ];
-        for ( var i = 0; i < nodes.length; i++ ) {
-            if ( selection.indexOf( nodes[ i ] ) === -1 ) {
-                needAdd.push( nodes[ i ] );
-                this.highlightNode( nodes[ i ] );
-            } else {
-                needRemove.push( nodes[ i ] );
-                this.unhighlightNode( nodes[ i ] );
-            }
-        }
-        return this.clearSelect( needRemove ).select( needAdd );
-    },
-
-    clearSelect: function ( nodes ) {
-        if ( !nodes ) {
-            for ( var _i = 0; _i < this._selectedNodes.length; _i++ ) {
-                this.unhighlightNode( this._selectedNodes[ _i ] );
+            nodes = utils.isArray(nodes) ? nodes : [nodes];
+            var selectedNodes = this.getSelectedNodes().slice(0);
+            this.removeAllSelectedNodes();
+            for(var i= 0,n; n = selectedNodes[i];){
+                var index = utils.indexOf(nodes,n);
+                if(index != -1){
+                    nodes.push(n);
+                    i++;
+                }else{
+                    unhighlightNode(this,n);
+                    selectedNodes.splice(i,1)
                 }
-            this._selectedNodes = [];
-            return this;
-        }
-        if ( false === nodes instanceof Array ) nodes = [ nodes ];
-        var originSelection = this._selectedNodes;
-        var newSelection = [];
-        for ( var i = 0; i < originSelection.length; i++ ) {
-            if ( nodes.indexOf( originSelection[ i ] ) === -1 ) {
-                newSelection.push( originSelection[ i ] );
             }
+            var me = this;
+            utils.each(nodes,function(i,n){
+                highlightNode(me,n)
+            });
+            this._selectedNodes = nodes;
         }
-        this._selectedNodes = newSelection;
-        return this;
-    },
-    unhighlightNode: function ( node ) {
-        node.setData( "highlight", false );
-        this.renderNode( node );
     }
-} );
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+}() );
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