backup. before shop update

lib/dialog/image_viewer.dart

@@ -0,0 +1,31 @@
+
+import 'package:flutter/material.dart';
+import 'package:photo_view/photo_view.dart';
+
+class ImageViewer extends StatefulWidget {
+  final Key key;
+  final ImageProvider imageProvider;
+
+  ImageViewer(this.imageProvider, {this.key}) :
+      super(key: key);
+
+  @override
+  State<StatefulWidget> createState() {
+    return ImageViewState();
+  }
+
+}
+
+class ImageViewState extends State<ImageViewer> {
+  @override
+  Widget build(BuildContext context) {
+    return Container(
+      width: MediaQuery.of(context).size.width - 100.0,
+      height: MediaQuery.of(context).size.height - 120.0,
+      child: PhotoView(
+        imageProvider: widget.imageProvider,
+      ),
+    );
+  }
+
+}

lib/dialog/logout_dialog.dart

@@ -0,0 +1,52 @@
+
+import 'package:flutter/material.dart';
+
+import '../constants.dart';
+import '../events/eventbus.dart';
+import '../events/events.dart';
+import '../generated/l10n.dart';
+import '../routes.dart';
+import '../store/actions.dart';
+import '../store/store.dart';
+import '../utils/utils.dart';
+
+AlertDialog logoutDialog(BuildContext context) {
+  return AlertDialog(
+    title: Text(S
+        .of(context)
+        .warning),
+    content: Text(S
+        .of(context)
+        .are_you_sure_to_logout),
+    actions: <Widget>[
+      FlatButton(
+        child: Text(S
+            .of(context)
+            .cancel),
+        onPressed: () {
+          Navigator.of(context).pop();
+        },
+      ),
+      FlatButton(
+        child: Text(S
+            .of(context)
+            .yes_i_am_sure),
+        onPressed: () {
+          Navigator.of(context).pop();
+          Utils.getBox().then((box) {
+            box.delete(Constants.KEY_USER_ID);
+            box.delete(
+                Constants.KEY_ACCESS_TOKEN);
+            store.dispatch(
+                new UpdateCurrentUser(null));
+            eventBus.fire(
+                new OnCurrentUserUpdated());
+            Routes.router.navigateTo(
+                context, '/', replace: true,
+                clearStack: true);
+          });
+        },
+      )
+    ],
+  );
+}