refactor: Controllers

lib/controllers/image_viewer_controller.dart

@@ -0,0 +1,42 @@
+import 'package:adaptive_page_layout/adaptive_page_layout.dart';
+import 'package:famedlysdk/famedlysdk.dart';
+import 'package:fluffychat/utils/platform_infos.dart';
+import 'package:fluffychat/views/image_viewer_view.dart';
+import 'package:fluffychat/views/widgets/matrix.dart';
+import 'package:flutter/material.dart';
+
+import '../utils/event_extension.dart';
+
+class ImageViewer extends StatefulWidget {
+  final Event event;
+  final void Function() onLoaded;
+
+  const ImageViewer(this.event, {Key key, this.onLoaded}) : super(key: key);
+
+  @override
+  ImageViewerController createState() => ImageViewerController();
+}
+
+class ImageViewerController extends State<ImageViewer> {
+  /// Forward this image to another room.
+  void forwardAction() {
+    Matrix.of(context).shareContent = widget.event.content;
+    AdaptivePageLayout.of(context).popUntilIsFirst();
+  }
+
+  /// Open this file with a system call.
+  void openFileAction() => widget.event.openFile(context, downloadOnly: true);
+
+  /// Go back if user swiped it away
+  void onInteractionEnds(ScaleEndDetails endDetails) {
+    if (PlatformInfos.usesTouchscreen == false) {
+      if (endDetails.velocity.pixelsPerSecond.dy >
+          MediaQuery.of(context).size.height * 1.50) {
+        Navigator.of(context, rootNavigator: false).pop();
+      }
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) => ImageViewerView(this);
+}

lib/utils/event_extension.dart

@@ -4,14 +4,14 @@ import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_cache_manager/flutter_cache_manager.dart';
 import 'matrix_file_extension.dart';
-import '../views/image_view.dart';
+import '../controllers/image_viewer_controller.dart';
 
 extension LocalizedBody on Event {
   void openFile(BuildContext context, {bool downloadOnly = false}) async {
     if (!downloadOnly &&
         [MessageTypes.Image, MessageTypes.Sticker].contains(messageType)) {
       await Navigator.of(context, rootNavigator: false).push(
-        MaterialPageRoute(builder: (_) => ImageView(this)),
+        MaterialPageRoute(builder: (_) => ImageViewer(this)),
       );
       return;
     }

lib/views/homeserver_picker_view.dart

@@ -1,4 +1,4 @@
-import 'package:fluffychat/controllers/homeserver_picker_controller.dart';
+import '../controllers/homeserver_picker_controller.dart';
 import 'package:fluffychat/views/widgets/default_app_bar_search_field.dart';
 import 'package:fluffychat/views/widgets/fluffy_banner.dart';
 import 'package:fluffychat/config/app_config.dart';

lib/views/image_viewer_view.dart

@@ -1,27 +1,15 @@
-import 'package:adaptive_page_layout/adaptive_page_layout.dart';
-import 'package:famedlysdk/famedlysdk.dart';
+import '../controllers/image_viewer_controller.dart';
 import 'package:fluffychat/views/widgets/image_bubble.dart';
-import 'package:fluffychat/views/widgets/matrix.dart';
 import 'package:flutter/material.dart';
-import '../utils/event_extension.dart';
 import 'package:flutter_gen/gen_l10n/l10n.dart';
-import '../utils/platform_infos.dart';
 
-class ImageView extends StatelessWidget {
-  final Event event;
-  final void Function() onLoaded;
+class ImageViewerView extends StatelessWidget {
+  final ImageViewerController controller;
 
-  const ImageView(this.event, {Key key, this.onLoaded}) : super(key: key);
-
-  void _forwardAction(BuildContext context) async {
-    Matrix.of(context).shareContent = event.content;
-    AdaptivePageLayout.of(context).popUntilIsFirst();
-  }
+  const ImageViewerView(this.controller, {Key key}) : super(key: key);
 
   @override
   Widget build(BuildContext context) {
-    var calcVelocity = MediaQuery.of(context).size.height * 1.50;
-
     return Scaffold(
       backgroundColor: Colors.black,
       extendBodyBehindAppBar: true,
@@ -29,7 +17,7 @@ class ImageView extends StatelessWidget {
         elevation: 0,
         leading: IconButton(
           icon: Icon(Icons.close),
-          onPressed: () => Navigator.of(context, rootNavigator: false).pop(),
+          onPressed: Navigator.of(context, rootNavigator: false).pop,
           color: Colors.white,
           tooltip: L10n.of(context).close,
         ),
@@ -37,13 +25,13 @@ class ImageView extends StatelessWidget {
         actions: [
           IconButton(
             icon: Icon(Icons.reply_outlined),
-            onPressed: () => _forwardAction(context),
+            onPressed: () => controller.forwardAction,
             color: Colors.white,
             tooltip: L10n.of(context).share,
           ),
           IconButton(
             icon: Icon(Icons.download_outlined),
-            onPressed: () => event.openFile(context, downloadOnly: true),
+            onPressed: () => controller.openFileAction,
             color: Colors.white,
             tooltip: L10n.of(context).downloadFile,
           ),
@@ -52,18 +40,12 @@ class ImageView extends StatelessWidget {
       body: InteractiveViewer(
         minScale: 1.0,
         maxScale: 10.0,
-        onInteractionEnd: (ScaleEndDetails endDetails) {
-          if (PlatformInfos.usesTouchscreen == false) {
-            if (endDetails.velocity.pixelsPerSecond.dy > calcVelocity) {
-              Navigator.of(context, rootNavigator: false).pop();
-            }
-          }
-        },
+        onInteractionEnd: controller.onInteractionEnds,
         child: Center(
           child: ImageBubble(
-            event,
+            controller.widget.event,
             tapToView: false,
-            onLoaded: onLoaded,
+            onLoaded: controller.widget.onLoaded,
             fit: BoxFit.contain,
             backgroundColor: Colors.black,
             maxSize: false,

lib/views/widgets/image_bubble.dart

@@ -1,5 +1,5 @@
 import 'package:famedlysdk/famedlysdk.dart';
-import 'package:fluffychat/views/image_view.dart';
+import 'package:fluffychat/controllers/image_viewer_controller.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/foundation.dart';
 import 'package:flutter_blurhash/flutter_blurhash.dart';
@@ -235,7 +235,7 @@ class _ImageBubbleState extends State<ImageBubble> {
           if (!widget.tapToView) return;
           Navigator.of(context, rootNavigator: false).push(
             MaterialPageRoute(
-              builder: (_) => ImageView(widget.event, onLoaded: () {
+              builder: (_) => ImageViewer(widget.event, onLoaded: () {
                 // If the original file didn't load yet, we want to do that now.
                 // This is so that the original file displays after going on the image viewer,
                 // waiting for it to load, and then hitting back. This ensures that we always