refactor: Switch to TextButton

lib/components/dialogs/adaptive_flat_button.dart

@@ -3,13 +3,13 @@ import 'package:flutter/cupertino.dart';
 import 'package:flutter/material.dart';
 
 class AdaptiveFlatButton extends StatelessWidget {
-  final Widget child;
+  final String label;
   final Color textColor;
   final Function onPressed;
 
   const AdaptiveFlatButton({
     Key key,
-    this.child,
+    @required this.label,
     this.textColor,
     this.onPressed,
   }) : super(key: key);
@@ -18,14 +18,16 @@ class AdaptiveFlatButton extends StatelessWidget {
   Widget build(BuildContext context) {
     if (PlatformInfos.isCupertinoStyle) {
       return CupertinoDialogAction(
-        child: child,
+        child: Text(label),
         onPressed: onPressed,
         textStyle: textColor != null ? TextStyle(color: textColor) : null,
       );
     }
-    return FlatButton(
-      child: child,
-      textColor: textColor,
+    return TextButton(
+      child: Text(
+        label,
+        style: TextStyle(color: textColor),
+      ),
       onPressed: onPressed,
     );
   }

lib/components/dialogs/bootstrap_dialog.dart

@@ -74,7 +74,7 @@ class _BootstrapDialogState extends State<BootstrapDialog> {
       titleText = L10n.of(context).chatBackup;
       body = Text(L10n.of(context).chatBackupDescription);
       buttons.add(AdaptiveFlatButton(
-        child: Text(L10n.of(context).next),
+        label: L10n.of(context).next,
         onPressed: () => _createBootstrap(false),
       ));
     } else if (bootstrap.newSsssKey?.recoveryKey != null &&
@@ -95,11 +95,11 @@ class _BootstrapDialogState extends State<BootstrapDialog> {
         ),
       );
       buttons.add(AdaptiveFlatButton(
-        child: Text(L10n.of(context).copyToClipboard),
+        label: L10n.of(context).copyToClipboard,
         onPressed: () => Clipboard.setData(ClipboardData(text: key)),
       ));
       buttons.add(AdaptiveFlatButton(
-        child: Text(L10n.of(context).next),
+        label: L10n.of(context).next,
         onPressed: () => setState(() => _recoveryKeyStored = true),
       ));
     } else {
@@ -150,7 +150,7 @@ class _BootstrapDialogState extends State<BootstrapDialog> {
                 );
           buttons.add(AdaptiveFlatButton(
             textColor: Colors.red,
-            child: Text('Lost security key'),
+            label: 'Lost security key',
             onPressed: () async {
               if (OkCancelResult.ok ==
                   await showOkCancelAlertDialog(
@@ -167,7 +167,7 @@ class _BootstrapDialogState extends State<BootstrapDialog> {
             },
           ));
           buttons.add(AdaptiveFlatButton(
-            child: Text(L10n.of(context).transferFromAnotherDevice),
+            label: L10n.of(context).transferFromAnotherDevice,
             onPressed: () async {
               final req = await Matrix.of(context)
                   .client
@@ -178,7 +178,7 @@ class _BootstrapDialogState extends State<BootstrapDialog> {
             },
           ));
           buttons.add(AdaptiveFlatButton(
-              child: Text(L10n.of(context).next),
+              label: L10n.of(context).next,
               onPressed: () async {
                 setState(() {
                   _recoveryKeyInputError = null;
@@ -232,7 +232,7 @@ class _BootstrapDialogState extends State<BootstrapDialog> {
             title: Text(L10n.of(context).oopsSomethingWentWrong),
           );
           buttons.add(AdaptiveFlatButton(
-            child: Text(L10n.of(context).close),
+            label: L10n.of(context).close,
             onPressed: () =>
                 Navigator.of(context, rootNavigator: false).pop<bool>(false),
           ));
@@ -245,7 +245,7 @@ class _BootstrapDialogState extends State<BootstrapDialog> {
             title: Text(L10n.of(context).keysCached),
           );
           buttons.add(AdaptiveFlatButton(
-            child: Text(L10n.of(context).close),
+            label: L10n.of(context).close,
             onPressed: () =>
                 Navigator.of(context, rootNavigator: false).pop<bool>(false),
           ));

lib/components/dialogs/key_verification_dialog.dart

@@ -132,14 +132,14 @@ class _KeyVerificationPageState extends State<KeyVerificationDialog> {
           ),
         );
         buttons.add(AdaptiveFlatButton(
-          child: Text(L10n.of(context).submit),
+          label: L10n.of(context).submit,
           onPressed: () {
             input = textEditingController.text;
             checkInput();
           },
         ));
         buttons.add(AdaptiveFlatButton(
-          child: Text(L10n.of(context).skip),
+          label: L10n.of(context).skip,
           onPressed: () => widget.request.openSSSS(skip: true),
         ));
         break;
@@ -151,11 +151,11 @@ class _KeyVerificationPageState extends State<KeyVerificationDialog> {
           margin: EdgeInsets.only(left: 8.0, right: 8.0),
         );
         buttons.add(AdaptiveFlatButton(
-          child: Text(L10n.of(context).accept),
+          label: L10n.of(context).accept,
           onPressed: () => widget.request.acceptVerification(),
         ));
         buttons.add(AdaptiveFlatButton(
-          child: Text(L10n.of(context).reject),
+          label: L10n.of(context).reject,
           onPressed: () {
             widget.request.rejectVerification().then((_) {
               Navigator.of(context, rootNavigator: false).pop();
@@ -181,7 +181,7 @@ class _KeyVerificationPageState extends State<KeyVerificationDialog> {
             .deviceKeys[widget.request.deviceId];
         if (key != null) {
           buttons.add(AdaptiveFlatButton(
-            child: Text(L10n.of(context).verifyManual),
+            label: L10n.of(context).verifyManual,
             onPressed: () async {
               final result = await showOkCancelAlertDialog(
                 context: context,
@@ -237,11 +237,11 @@ class _KeyVerificationPageState extends State<KeyVerificationDialog> {
         );
         buttons.add(AdaptiveFlatButton(
           textColor: Colors.red,
-          child: Text(L10n.of(context).theyDontMatch),
+          label: L10n.of(context).theyDontMatch,
           onPressed: () => widget.request.rejectSas(),
         ));
         buttons.add(AdaptiveFlatButton(
-          child: Text(L10n.of(context).theyMatch),
+          label: L10n.of(context).theyMatch,
           onPressed: () => widget.request.acceptSas(),
         ));
         break;
@@ -276,7 +276,7 @@ class _KeyVerificationPageState extends State<KeyVerificationDialog> {
           mainAxisSize: MainAxisSize.min,
         );
         buttons.add(AdaptiveFlatButton(
-          child: Text(L10n.of(context).close),
+          label: L10n.of(context).close,
           onPressed: () => Navigator.of(context, rootNavigator: false).pop(),
         ));
         break;
@@ -292,8 +292,8 @@ class _KeyVerificationPageState extends State<KeyVerificationDialog> {
           ],
           mainAxisSize: MainAxisSize.min,
         );
-        buttons.add(FlatButton(
-          child: Text(L10n.of(context).close),
+        buttons.add(AdaptiveFlatButton(
+          label: L10n.of(context).close,
           onPressed: () => Navigator.of(context, rootNavigator: false).pop(),
         ));
         break;

lib/components/dialogs/permission_slider_dialog.dart

@@ -71,12 +71,12 @@ class _PermissionSliderDialogState extends State<PermissionSliderDialog> {
     );
     final buttons = [
       AdaptiveFlatButton(
-        child: Text(L10n.of(context).cancel),
+       label: L10n.of(context).cancel,
         onPressed: () =>
             Navigator.of(context, rootNavigator: false).pop<int>(null),
       ),
       AdaptiveFlatButton(
-        child: Text(L10n.of(context).confirm),
+      label: L10n.of(context).confirm,
         onPressed: () =>
             Navigator.of(context, rootNavigator: false).pop<int>(_permission),
       ),

lib/components/dialogs/recording_dialog.dart

@@ -107,7 +107,7 @@ class _RecordingDialogState extends State<RecordingDialog> {
         ],
       ),
       actions: <Widget>[
-        FlatButton(
+        TextButton(
           child: Text(
             L10n.of(context).cancel.toUpperCase(),
             style: TextStyle(
@@ -116,7 +116,7 @@ class _RecordingDialogState extends State<RecordingDialog> {
           ),
           onPressed: () => Navigator.of(context, rootNavigator: false).pop(),
         ),
-        FlatButton(
+        TextButton(
           child: Row(
             children: <Widget>[
               Text(L10n.of(context).send.toUpperCase()),

lib/components/dialogs/send_file_dialog.dart

@@ -77,14 +77,14 @@ class _SendFileDialogState extends State<SendFileDialog> {
       title: Text(sendStr),
       content: contentWidget,
       actions: <Widget>[
-        FlatButton(
+        TextButton(
           child: Text(L10n.of(context).cancel),
           onPressed: () {
             // just close the dialog
             Navigator.of(context, rootNavigator: false).pop();
           },
         ),
-        FlatButton(
+        TextButton(
           child: Text(L10n.of(context).send),
           onPressed: _isSending
               ? null