selection change

src/core/kityminder.js

@@ -328,7 +328,7 @@ kity.extendClass(KityMinder, {
         var selection = this.getSelectedNodes();
         if(false === nodes instanceof Array) nodes = [nodes];
         for(var i = 0; i < nodes.length; i++) {
-            if(selection.indexOf(nodes[i]) !== -1) {
+            if(selection.indexOf(nodes[i]) === -1) {
                 selection.push(nodes[i]);
             }
         }
@@ -359,10 +359,11 @@ kity.extendClass(KityMinder, {
             this._selectedNodes = [];
             return this;
         }
+        if(false === nodes instanceof Array) nodes = [nodes];
         var originSelection = this.getSelectedNodes();
         var newSelection = [];
         for(var i = 0; i < originSelection.length; i++) {
-            if(nodes.indexOf(originSelection[i]) !== -1) {
+            if(nodes.indexOf(originSelection[i]) === -1) {
                 newSelection.push(originSelection[i]);
             }
         }