Revert "add widget SliderNew"

lib/views/widget_page/widget_page.dart

@@ -6,28 +6,28 @@
 import 'package:flutter/material.dart';
 
 import 'package:flutter_go/components/cate_card.dart';
-
-import 'package:flutter_go/routers/application.dart';
-
+import 'package:flutter_go/model/cat.dart';
 
 class WidgetPage extends StatefulWidget {
-
-
-
+  final db;
+  final CatControlModel catModel;
+  WidgetPage(this.db)
+      : catModel = new CatControlModel(),
+        super();
 
   @override
-  SecondPageState createState() => new SecondPageState();
+  SecondPageState createState() => new SecondPageState(catModel);
 }
 
 class SecondPageState extends State<WidgetPage> with AutomaticKeepAliveClientMixin{
-
-  SecondPageState() : super();
+  CatControlModel catModel;
+  SecondPageState(this.catModel) : super();
 
   TextEditingController controller;
   String active = 'test';
   String data = '无';
 
-
+  List<Cat> categories = [];
 
   @override
     bool get wantKeepAlive => true;
@@ -35,16 +35,25 @@ class SecondPageState extends State<WidgetPage> with AutomaticKeepAliveClientMix
   @override
   void initState() { 
     super.initState();
+    renderCats();
   }
 
-
+  void renderCats() {
+    catModel.getList().then((List data) {
+      if (data.isNotEmpty) {
+        setState(() {
+          categories = data;
+        });
+      }
+    });
+  }
 
   Widget buildGrid() {
     // 存放最后的widget
     List<Widget> tiles = [];
-    Application.widgetTree.children.forEach((dynamic item) {
+    for (Cat item in categories) {
       tiles.add(new CateCard(category: item));
-    });
+    }
     return new ListView(
       children: tiles,
     );
@@ -53,6 +62,11 @@ class SecondPageState extends State<WidgetPage> with AutomaticKeepAliveClientMix
   @override
   Widget build(BuildContext context) {
     super.build(context);
+    if (categories.length == 0) {
+      return ListView(
+        children: <Widget>[new Container()],
+      );
+    }
     return Container(
       color: Theme.of(context).backgroundColor,
       child: this.buildGrid(),