ExpandedControls: improved castingToText

lib/src/cast/widgets/expanded_controls/ExpandedControls.dart

@@ -30,6 +30,8 @@ const _bottomUpBlackGradient = BoxDecoration(
 
 class ExpandedControls extends StatefulWidget {
   final FlutterCastFramework castFramework;
+
+  /// Label to introduce cast device. Default is "Casting to {{device_name}}", where {{device_name}} is replaced with the device name
   final String? castingToText;
 
   /// This is called when the back button is tapped or when the session is closed
@@ -129,6 +131,7 @@ class _ExpandedControlsState extends State<ExpandedControls> {
             padding: const EdgeInsets.all(8.0),
             child: ExpandedControlsConnectedDeviceLabel(
               castFramework: widget.castFramework,
+              castingToText: widget.castingToText,
             ),
           ),
           Padding(

lib/src/cast/widgets/expanded_controls/ExpandedControlsConnectedDeviceLabel.dart

@@ -2,16 +2,29 @@ import 'package:flutter/material.dart';
 import 'package:flutter/widgets.dart';
 import 'package:flutter_cast_framework/cast.dart';
 
+/// Placeholder to be used for the castingToText of ExpandedControlsConnectedDeviceLabel
+const CAST_DEVICE_NAME_PLACEHOLDER = "{{cast_device_name}}";
+
 class ExpandedControlsConnectedDeviceLabel extends StatelessWidget {
   final FlutterCastFramework castFramework;
-  final String castingToText;
+  final _defaultCastingToText = "Casting to $CAST_DEVICE_NAME_PLACEHOLDER";
 
-  const ExpandedControlsConnectedDeviceLabel({
+  /// Label to introduce cast device. Default is "Casting to {{cast_device_name}}",
+  /// where {{cast_device_name}} is replaced with the device name.
+  /// {{cast_device_name}} can be found in the constant CAST_DEVICE_NAME_PLACEHOLDER.
+  final String? castingToText;
+
+  ExpandedControlsConnectedDeviceLabel({
     Key? key,
     required this.castFramework,
-    this.castingToText = "Casting to",
+    this.castingToText,
   }) : super(key: key);
 
+  String _replaceDeviceName(String textWithPlaceholder, String deviceName) {
+    return textWithPlaceholder.replaceAll(
+        CAST_DEVICE_NAME_PLACEHOLDER, deviceName);
+  }
+
   @override
   Widget build(BuildContext context) {
     final textStyle =
@@ -21,9 +34,11 @@ class ExpandedControlsConnectedDeviceLabel extends StatelessWidget {
       future: castFramework.castContext.sessionManager.getCastDevice(),
       builder: (context, snapshot) {
         if (snapshot.hasData) {
-          var castDevice = snapshot.data;
+          final castDevice = snapshot.data;
-          var castDeviceName = castDevice?.friendlyName ?? "";
+          final castDeviceName = castDevice?.friendlyName ?? "";
-          return Text("$castingToText $castDeviceName", style: textStyle);
+          final baseCastLabel = castingToText ?? _defaultCastingToText;
+          final label = _replaceDeviceName(baseCastLabel, castDeviceName);
+          return Text(label, style: textStyle);
         } else if (snapshot.hasError) {
           debugPrint("error while retrieving cast device ${snapshot.error}");
           return Text("");

lib/widgets.dart

@@ -6,3 +6,4 @@ export 'src/cast/widgets/expanded_controls/ExpandedControls.dart';
 export 'src/cast/widgets/expanded_controls/ExpandedControlsPlayer.dart';
 export 'src/cast/widgets/expanded_controls/ExpandedControlsProgress.dart';
 export 'src/cast/widgets/expanded_controls/ExpandedControlsToolbar.dart';
+export 'src/cast/widgets/expanded_controls/ExpandedControlsConnectedDeviceLabel.dart';