feat(ui): add support for attachmentButtonBuilder, commandButtonBuilder in MessageInput

Signed-off-by: xsahil03x <[email protected]>

packages/stream_chat_flutter/CHANGELOG.md

@@ -2,21 +2,35 @@
 
 ✅ Added
 
-- [#516](https://github.com/GetStream/stream-chat-flutter/issues/516): Added `StreamChatThemeData.placeholderUserImage` for 
-  building a widget when the `UserAvatar` image is loading
+- [#516](https://github.com/GetStream/stream-chat-flutter/issues/516):
+  Added `StreamChatThemeData.placeholderUserImage` for building a widget when the `UserAvatar` image
+  is loading
 - Added a `backgroundColor` property to the following widgets:
-  - `ChannelHeader`
-  - `ChannelListHeader`
-  - `GalleryHeader`
-  - `GalleryFooter`
-  - `ThreadHeader`
+    - `ChannelHeader`
+    - `ChannelListHeader`
+    - `GalleryHeader`
+    - `GalleryFooter`
+    - `ThreadHeader`
 
+- Added `MessageInput.attachmentButtonBuilder` and `MessageInput.commandButtonBuilder` for more
+  customizations.
+
+```dart
+typedef ActionButtonBuilder = Widget Function(
+    BuildContext context,
+    IconButton defaultActionButton,
+    );
+```
+
+> **_NOTE:_** The last parameter is the default `ActionButton`
+You can call `.copyWith` to customize just a subset of properties.
 
 🔄 Changed
 
-Theming has been upgraded! Most theme classes now have `InheritedTheme` classes 
-associated with them, and have been upgraded with some goodies like `lerp` functions. 
-Here's the full naming breakdown:
+Theming has been upgraded! Most theme classes now have `InheritedTheme` classes associated with
+them, and have been upgraded with some goodies like `lerp` functions. Here's the full naming
+breakdown:
+
 * `AvatarTheme` is now `AvatarThemeData`
 * `ChannelHeaderTheme` is now `ChannelHeaderThemeData`
 * `ChannelListHeaderTheme` is now `ChannelListHeaderThemeData`
@@ -32,8 +46,9 @@ Here's the full naming breakdown:
 
 🐞 Fixed
 
-- [#590](https://github.com/GetStream/stream-chat-flutter/issues/590): livestream use case, no members when sending message
-  
+- [#590](https://github.com/GetStream/stream-chat-flutter/issues/590): livestream use case, no
+  members when sending message
+
 ## 2.1.1
 
 - Updated core dependency
@@ -50,7 +65,8 @@ Here's the full naming breakdown:
 🔄 Changed
 
 - `StreamChat.of(context).user` is now deprecated in favor of `StreamChat.of(context).currentUser`.
-- `StreamChat.of(context).userStream` is now deprecated in favor of `StreamChat.of(context).currentUserStream`.
+- `StreamChat.of(context).userStream` is now deprecated in favor
+  of `StreamChat.of(context).currentUserStream`.
 
 🐞 Fixed
 
@@ -64,17 +80,17 @@ Here's the full naming breakdown:
 - Renamed `ChannelImage` to `ChannelAvatar`
 - Updated `StreamChatThemeData.reactionIcons` to accept custom builder
 - Renamed `ColorTheme` properties to reflect the purpose of the colors
-  - `ColorTheme.black` -> `ColorTheme.textHighEmphasis`
-  - `ColorTheme.grey` -> `ColorTheme.textLowEmphasis`
-  - `ColorTheme.greyGainsboro` -> `ColorTheme.disabled`
-  - `ColorTheme.greyWhisper` -> `ColorTheme.borders`
-  - `ColorTheme.whiteSmoke` -> `ColorTheme.inputBg`
-  - `ColorTheme.whiteSnow` -> `ColorTheme.appBg`
-  - `ColorTheme.white` -> `ColorTheme.barsBg`
-  - `ColorTheme.blueAlice` -> `ColorTheme.linkBg`
-  - `ColorTheme.accentBlue` -> `ColorTheme.accentPrimary`
-  - `ColorTheme.accentRed` -> `ColorTheme.accentError`
-  - `ColorTheme.accentGreen` -> `ColorTheme.accentInfo`
+    - `ColorTheme.black` -> `ColorTheme.textHighEmphasis`
+    - `ColorTheme.grey` -> `ColorTheme.textLowEmphasis`
+    - `ColorTheme.greyGainsboro` -> `ColorTheme.disabled`
+    - `ColorTheme.greyWhisper` -> `ColorTheme.borders`
+    - `ColorTheme.whiteSmoke` -> `ColorTheme.inputBg`
+    - `ColorTheme.whiteSnow` -> `ColorTheme.appBg`
+    - `ColorTheme.white` -> `ColorTheme.barsBg`
+    - `ColorTheme.blueAlice` -> `ColorTheme.linkBg`
+    - `ColorTheme.accentBlue` -> `ColorTheme.accentPrimary`
+    - `ColorTheme.accentRed` -> `ColorTheme.accentError`
+    - `ColorTheme.accentGreen` -> `ColorTheme.accentInfo`
 
 - `ChannelListCore` options property is removed in favor of individual properties
     - `options.state` -> bool state
@@ -95,7 +111,7 @@ typedef MessageBuilder = Widget Function(
     );
 ```
 
-the last parameter is the default `MessageWidget`
+> **_NOTE:_** the last parameter is the default `MessageWidget`
 You can call `.copyWith` to customize just a subset of properties
 
 
@@ -103,7 +119,8 @@ You can call `.copyWith` to customize just a subset of properties
 
 - Added video compress options (frame and quality) to `MessageInput`
 - TypingIndicator now has a property called `parentId` to show typing indicator specific to threads
-- [#493](https://github.com/GetStream/stream-chat-flutter/pull/493): add support for messageListView header/footer
+- [#493](https://github.com/GetStream/stream-chat-flutter/pull/493): add support for messageListView
+  header/footer
 - `MessageWidget` accepts a `userAvatarBuilder`
 - Added pinMessage ui support
 - Added `MessageListView.threadSeparatorBuilder` property
@@ -112,10 +129,12 @@ You can call `.copyWith` to customize just a subset of properties
 
 🐞 Fixed
 
-- [#483](https://github.com/GetStream/stream-chat-flutter/issues/483): Keyboard covers input text box when editing
-  message
-- Modals are shown using the nearest `Navigator` to make using the SDK easier in a nested navigator use case
-- [#484](https://github.com/GetStream/stream-chat-flutter/issues/484): messages don't update without a reload
+- [#483](https://github.com/GetStream/stream-chat-flutter/issues/483): Keyboard covers input text
+  box when editing message
+- Modals are shown using the nearest `Navigator` to make using the SDK easier in a nested navigator
+  use case
+- [#484](https://github.com/GetStream/stream-chat-flutter/issues/484): messages don't update without
+  a reload
 - `MessageListView` not rendering if the user is not a member of the channel
 - Fix `MessageInput` overflow when there are no actions
 - Minor fixes and improvements
@@ -125,17 +144,17 @@ You can call `.copyWith` to customize just a subset of properties
 🛑️ Breaking Changes from `2.0.0-nullsafety.8`
 
 - Renamed `ColorTheme` properties to reflect the purpose of the colors
-  - `ColorTheme.black` -> `ColorTheme.textHighEmphasis`
-  - `ColorTheme.grey` -> `ColorTheme.textLowEmphasis`
-  - `ColorTheme.greyGainsboro` -> `ColorTheme.disabled`
-  - `ColorTheme.greyWhisper` -> `ColorTheme.borders`
-  - `ColorTheme.whiteSmoke` -> `ColorTheme.inputBg`
-  - `ColorTheme.whiteSnow` -> `ColorTheme.appBg`
-  - `ColorTheme.white` -> `ColorTheme.barsBg`
-  - `ColorTheme.blueAlice` -> `ColorTheme.linkBg`
-  - `ColorTheme.accentBlue` -> `ColorTheme.accentPrimary`
-  - `ColorTheme.accentRed` -> `ColorTheme.accentError`
-  - `ColorTheme.accentGreen` -> `ColorTheme.accentInfo`
+    - `ColorTheme.black` -> `ColorTheme.textHighEmphasis`
+    - `ColorTheme.grey` -> `ColorTheme.textLowEmphasis`
+    - `ColorTheme.greyGainsboro` -> `ColorTheme.disabled`
+    - `ColorTheme.greyWhisper` -> `ColorTheme.borders`
+    - `ColorTheme.whiteSmoke` -> `ColorTheme.inputBg`
+    - `ColorTheme.whiteSnow` -> `ColorTheme.appBg`
+    - `ColorTheme.white` -> `ColorTheme.barsBg`
+    - `ColorTheme.blueAlice` -> `ColorTheme.linkBg`
+    - `ColorTheme.accentBlue` -> `ColorTheme.accentPrimary`
+    - `ColorTheme.accentRed` -> `ColorTheme.accentError`
+    - `ColorTheme.accentGreen` -> `ColorTheme.accentInfo`
 
 ✅ Added
 
@@ -162,21 +181,24 @@ typedef MessageBuilder = Widget Function(
     );
 ```
 
-the last parameter is the default `MessageWidget`
-You can call `.copyWith` to customize just a subset of properties
+> **_NOTE:_** The last parameter is the default `MessageWidget`
+You can call `.copyWith` to customize just a subset of properties.
 
 ✅ Added
 
 - TypingIndicator now has a property called `parentId` to show typing indicator specific to threads
-- [#493](https://github.com/GetStream/stream-chat-flutter/pull/493): add support for messageListView header/footer
+- [#493](https://github.com/GetStream/stream-chat-flutter/pull/493): add support for messageListView
+  header/footer
 - `MessageWidget` accepts a `userAvatarBuilder`
 
 🐞 Fixed
 
-- [#483](https://github.com/GetStream/stream-chat-flutter/issues/483): Keyboard covers input text box when editing
-  message
-- Modals are shown using the nearest `Navigator` to make using the SDK easier in a nested navigator use case
-- [#484](https://github.com/GetStream/stream-chat-flutter/issues/484): messages don't update without a reload
+- [#483](https://github.com/GetStream/stream-chat-flutter/issues/483): Keyboard covers input text
+  box when editing message
+- Modals are shown using the nearest `Navigator` to make using the SDK easier in a nested navigator
+  use case
+- [#484](https://github.com/GetStream/stream-chat-flutter/issues/484): messages don't update without
+  a reload
 - `MessageListView` not rendering if the user is not a member of the channel
 
 ## 2.0.0-nullsafety.7
@@ -246,7 +268,8 @@ You can call `.copyWith` to customize just a subset of properties
 - Show error messages as system and keep them in the message input
 - Remove notification badge logic
 - Use shimmer while loading images
-- Polished `StreamChatTheme` adding more options and a new `MessageInputTheme` dedicated to `MessageInput`
+- Polished `StreamChatTheme` adding more options and a new `MessageInputTheme` dedicated
+  to `MessageInput`
 - Add possibility to specify custom message actions using `MessageWidget.customActions`
 - Added `MessageListView.onAttachmentTap` callback
 - Fixed message newline issue
@@ -303,7 +326,8 @@ You can call `.copyWith` to customize just a subset of properties
 - Improved api documentation
 - Updated `stream_chat` dependency to `^1.0.0-beta`
 - Extracted sample app into dedicated [repo](https://github.com/GetStream/flutter-samples)
-- Reimplemented existing widgets using [stream_chat_flutter_core](https://pub.dev/packages/stream_chat_flutter_core)
+- Reimplemented existing widgets
+  using [stream_chat_flutter_core](https://pub.dev/packages/stream_chat_flutter_core)
 
 ## 0.2.21
 
@@ -320,8 +344,8 @@ You can call `.copyWith` to customize just a subset of properties
 
 ## 0.2.20+2
 
-- Added `shouldAddChannel` to ChannelsBloc in order to check if a channel has to be added to the list when a new message
-  arrives
+- Added `shouldAddChannel` to ChannelsBloc in order to check if a channel has to be added to the
+  list when a new message arrives
 
 ## 0.2.20+1
 
@@ -355,7 +379,8 @@ You can call `.copyWith` to customize just a subset of properties
 
 ## 0.2.16
 
-- Do not wrap channel preview builder. Users will have to implement they're custom onTap/onLongPress implementation
+- Do not wrap channel preview builder. Users will have to implement they're custom onTap/onLongPress
+  implementation
 - Make public autofocus field of the TextField of message_input
 
 ## 0.2.15
@@ -540,10 +565,11 @@ You can call `.copyWith` to customize just a subset of properties
 
 ## 0.2.1-alpha+1
 
-- Removed the additional `Navigator` in `StreamChat` widget. It was added to make the app have the `StreamChat` widget
-  as ancestor in every route. Now the recommended way to add `StreamChat` to your app is using the `builder` property of
-  your `MaterialApp` widget. Otherwise you can use it in the usual way, but you need to add a `StreamChat` widget to
-  every route of your app. Read [this issue](https://github.com/GetStream/stream-chat-flutter/issues/47) for more
+- Removed the additional `Navigator` in `StreamChat` widget. It was added to make the app have
+  the `StreamChat` widget as ancestor in every route. Now the recommended way to add `StreamChat` to
+  your app is using the `builder` property of your `MaterialApp` widget. Otherwise you can use it in
+  the usual way, but you need to add a `StreamChat` widget to every route of your app.
+  Read [this issue](https://github.com/GetStream/stream-chat-flutter/issues/47) for more
   information.
 
 ```dart
@@ -645,8 +671,8 @@ Widget build(BuildContext context) {
 
 - Add gesture (vertical drag down) to close the keyboard
 
-- Add keyboard type parameters (set it to TextInputType.text to show the submit button that will even close the
-  keyboard)
+- Add keyboard type parameters (set it to TextInputType.text to show the submit button that will
+  even close the keyboard)
 
 The property showVideoFullScreen was added mainly because of this issue brianegan/chewie#261
 

packages/stream_chat_flutter/lib/src/extension.dart

@@ -46,9 +46,9 @@ extension PlatformFileX on PlatformFile {
       );
 }
 
-///
+/// Extension on [InputDecoration]
 extension InputDecorationX on InputDecoration {
-  ///
+  /// Merges this [AvatarThemeData] with the [other]
   InputDecoration merge(InputDecoration? other) {
     if (other == null) return this;
     return copyWith(
@@ -123,3 +123,50 @@ extension FlipBorder on BorderRadius {
           bottomRight: bottomLeft)
       : this;
 }
+
+/// Extension on [IconButton]
+extension IconButtonX on IconButton {
+  /// Creates a copy of [IconButton] with specified attributes overridden.
+  IconButton copyWith({
+    double? iconSize,
+    VisualDensity? visualDensity,
+    EdgeInsetsGeometry? padding,
+    AlignmentGeometry? alignment,
+    double? splashRadius,
+    Color? color,
+    Color? focusColor,
+    Color? hoverColor,
+    Color? highlightColor,
+    Color? splashColor,
+    Color? disabledColor,
+    void Function()? onPressed,
+    MouseCursor? mouseCursor,
+    FocusNode? focusNode,
+    bool? autofocus,
+    String? tooltip,
+    bool? enableFeedback,
+    BoxConstraints? constraints,
+    Widget? icon,
+  }) =>
+      IconButton(
+        iconSize: iconSize ?? this.iconSize,
+        visualDensity: visualDensity ?? this.visualDensity,
+        padding: padding ?? this.padding,
+        alignment: alignment ?? this.alignment,
+        splashRadius: splashRadius ?? this.splashRadius,
+        color: color ?? this.color,
+        focusColor: focusColor ?? this.focusColor,
+        hoverColor: hoverColor ?? this.hoverColor,
+        highlightColor: highlightColor ?? this.highlightColor,
+        splashColor: splashColor ?? this.splashColor,
+        disabledColor: disabledColor ?? this.disabledColor,
+        onPressed: onPressed ?? this.onPressed,
+        mouseCursor: mouseCursor ?? this.mouseCursor,
+        focusNode: focusNode ?? this.focusNode,
+        autofocus: autofocus ?? this.autofocus,
+        tooltip: tooltip ?? this.tooltip,
+        enableFeedback: enableFeedback ?? this.enableFeedback,
+        constraints: constraints ?? this.constraints,
+        icon: icon ?? this.icon,
+      );
+}

packages/stream_chat_flutter/lib/src/message_input.dart

@@ -50,6 +50,14 @@ typedef MentionTileBuilder = Widget Function(
   Member member,
 );
 
+/// Widget builder for action button
+/// [defaultActionButton] is the default [IconButton] configuration
+/// Use [defaultActionButton.copyWith] to easily customize it
+typedef ActionButtonBuilder = Widget Function(
+  BuildContext context,
+  IconButton defaultActionButton,
+);
+
 /// Location for actions on the [MessageInput]
 enum ActionsLocation {
   /// Align to left
@@ -164,6 +172,8 @@ class MessageInput extends StatefulWidget {
     this.compressedVideoQuality = VideoQuality.DefaultQuality,
     this.compressedVideoFrameRate = 30,
     this.onError,
+    this.attachmentButtonBuilder,
+    this.commandButtonBuilder,
   }) : super(key: key);
 
   /// Message to edit
@@ -247,6 +257,12 @@ class MessageInput extends StatefulWidget {
   /// A callback for error reporting
   final ErrorListener? onError;
 
+  /// Builder for customizing attachment button.
+  final ActionButtonBuilder? attachmentButtonBuilder;
+
+  /// Builder for customizing command button.
+  final ActionButtonBuilder? commandButtonBuilder;
+
   @override
   MessageInputState createState() => MessageInputState();
 
@@ -403,11 +419,11 @@ class MessageInputState extends State<MessageInput> {
         children: <Widget>[
           if (!_commandEnabled &&
               widget.actionsLocation == ActionsLocation.left)
-            _buildExpandActionsButton(),
+            _buildExpandActionsButton(context),
           _buildTextInput(context),
           if (!_commandEnabled &&
               widget.actionsLocation == ActionsLocation.right)
-            _buildExpandActionsButton(),
+            _buildExpandActionsButton(context),
           if (widget.sendButtonLocation == SendButtonLocation.outside)
             _animateSendButton(context),
         ],
@@ -490,7 +506,7 @@ class MessageInputState extends State<MessageInput> {
     );
   }
 
-  Widget _buildExpandActionsButton() {
+  Widget _buildExpandActionsButton(BuildContext context) {
     final channel = StreamChannel.of(context).channel;
     return Padding(
       padding: const EdgeInsets.symmetric(horizontal: 8),
@@ -528,12 +544,13 @@ class MessageInputState extends State<MessageInput> {
                 child: Row(
                   mainAxisAlignment: MainAxisAlignment.spaceEvenly,
                   children: <Widget>[
-                    if (!widget.disableAttachments) _buildAttachmentButton(),
+                    if (!widget.disableAttachments)
+                      _buildAttachmentButton(context),
                     if (widget.showCommandsButton &&
                         widget.editMessage == null &&
                         channel.state != null &&
                         channel.config?.commands.isNotEmpty == true)
-                      _buildCommandButton(),
+                      _buildCommandButton(context),
                     ...widget.actions ?? [],
                   ].insertBetween(const SizedBox(width: 8)),
                 ),
@@ -669,9 +686,7 @@ class MessageInputState extends State<MessageInput> {
           : (widget.actionsLocation == ActionsLocation.leftInside
               ? Row(
                   mainAxisSize: MainAxisSize.min,
-                  children: [
-                    _buildExpandActionsButton(),
-                  ],
+                  children: [_buildExpandActionsButton(context)],
                 )
               : null),
       suffixIconConstraints: const BoxConstraints.tightFor(height: 40),
@@ -697,7 +712,7 @@ class MessageInputState extends State<MessageInput> {
             ),
           if (!_commandEnabled &&
               widget.actionsLocation == ActionsLocation.rightInside)
-            _buildExpandActionsButton(),
+            _buildExpandActionsButton(context),
           if (widget.sendButtonLocation == SendButtonLocation.inside)
             _animateSendButton(context),
         ],
@@ -1681,10 +1696,9 @@ class MessageInputState extends State<MessageInput> {
     }
   }
 
-  Widget _buildCommandButton() {
+  Widget _buildCommandButton(BuildContext context) {
     final s = textEditingController.text.trim();
-
-    return IconButton(
+    final defaultButton = IconButton(
       icon: StreamSvgIcon.lightning(
         color: s.isNotEmpty
             ? _streamChatTheme.colorTheme.disabled
@@ -1722,38 +1736,46 @@ class MessageInputState extends State<MessageInput> {
         }
       },
     );
+
+    return widget.commandButtonBuilder?.call(context, defaultButton) ??
+        defaultButton;
   }
 
-  Widget _buildAttachmentButton() => IconButton(
-        icon: StreamSvgIcon.attach(
-          color: _openFilePickerSection
-              ? _messageInputTheme.actionButtonColor
-              : _messageInputTheme.actionButtonIdleColor,
-        ),
-        padding: const EdgeInsets.all(0),
-        constraints: const BoxConstraints.tightFor(
-          height: 24,
-          width: 24,
-        ),
-        splashRadius: 24,
-        onPressed: () async {
-          _emojiOverlay?.remove();
-          _emojiOverlay = null;
-          _commandsOverlay?.remove();
-          _commandsOverlay = null;
-          _mentionsOverlay?.remove();
-          _mentionsOverlay = null;
+  Widget _buildAttachmentButton(BuildContext context) {
+    final defaultButton = IconButton(
+      icon: StreamSvgIcon.attach(
+        color: _openFilePickerSection
+            ? _messageInputTheme.actionButtonColor
+            : _messageInputTheme.actionButtonIdleColor,
+      ),
+      padding: const EdgeInsets.all(0),
+      constraints: const BoxConstraints.tightFor(
+        height: 24,
+        width: 24,
+      ),
+      splashRadius: 24,
+      onPressed: () async {
+        _emojiOverlay?.remove();
+        _emojiOverlay = null;
+        _commandsOverlay?.remove();
+        _commandsOverlay = null;
+        _mentionsOverlay?.remove();
+        _mentionsOverlay = null;
 
-          if (_openFilePickerSection) {
-            setState(() {
-              _openFilePickerSection = false;
-              _filePickerSize = _kMinMediaPickerSize;
-            });
-          } else {
-            showAttachmentModal();
-          }
-        },
-      );
+        if (_openFilePickerSection) {
+          setState(() {
+            _openFilePickerSection = false;
+            _filePickerSize = _kMinMediaPickerSize;
+          });
+        } else {
+          showAttachmentModal();
+        }
+      },
+    );
+
+    return widget.attachmentButtonBuilder?.call(context, defaultButton) ??
+        defaultButton;
+  }
 
   /// Show the attachment modal, making the user choose where to
   /// pick a media from

packages/stream_chat_flutter/lib/stream_chat_flutter.dart

@@ -12,6 +12,7 @@ export 'src/channel_preview.dart';
 export 'src/connection_status_builder.dart';
 export 'src/date_divider.dart';
 export 'src/deleted_message.dart';
+export 'src/extension.dart' show IconButtonX;
 export 'src/full_screen_media.dart';
 export 'src/gallery_footer.dart';
 export 'src/gallery_header.dart';