feat: Added allowed attachment types

packages/stream_chat_flutter/lib/src/mip/stream_attachment_picker.dart

@@ -36,6 +36,8 @@ class StreamAttachmentPicker extends StatefulWidget {
   /// do not set it if you're using our default CDN
   final int maxAttachmentSize;
 
+  final List<DefaultAttachmentTypes> allowedAttachmentTypes;
+
   const StreamAttachmentPicker({
     Key? key,
     required this.messageInputController,
@@ -49,6 +51,11 @@ class StreamAttachmentPicker extends StatefulWidget {
     this.compressedVideoFrameRate = 30,
     this.onChangeInputState,
     this.onError,
+    this.allowedAttachmentTypes = const [
+      DefaultAttachmentTypes.image,
+      DefaultAttachmentTypes.file,
+      DefaultAttachmentTypes.video,
+    ],
   }) : super(key: key);
 
   @override
@@ -125,6 +132,8 @@ class _StreamAttachmentPickerState extends State<StreamAttachmentPicker> {
               children: [
                 Row(
                   children: [
+                    if (widget.allowedAttachmentTypes
+                        .contains(DefaultAttachmentTypes.image))
                       IconButton(
                         icon: StreamSvgIcon.pictures(
                           color: _getIconColor(0),
@@ -138,6 +147,8 @@ class _StreamAttachmentPickerState extends State<StreamAttachmentPicker> {
                                 });
                               },
                       ),
+                    if (widget.allowedAttachmentTypes
+                        .contains(DefaultAttachmentTypes.file))
                       IconButton(
                         iconSize: 32,
                         icon: StreamSvgIcon.files(
@@ -147,16 +158,20 @@ class _StreamAttachmentPickerState extends State<StreamAttachmentPicker> {
                                 messageInputController.attachments.isNotEmpty
                             ? null
                             : () {
-                              widget.onFilePicked(DefaultAttachmentTypes.file);
+                                widget
+                                    .onFilePicked(DefaultAttachmentTypes.file);
                               },
                       ),
+                    if (widget.allowedAttachmentTypes
+                        .contains(DefaultAttachmentTypes.image))
                       IconButton(
                         icon: StreamSvgIcon.camera(
                           color: _getIconColor(2),
                         ),
                         onPressed: attachmentLimitCrossed ||
                                 (_attachmentContainsFile &&
-                                  messageInputController.attachments.isNotEmpty)
+                                    messageInputController
+                                        .attachments.isNotEmpty)
                             ? null
                             : () {
                                 widget.onFilePicked(
@@ -165,6 +180,8 @@ class _StreamAttachmentPickerState extends State<StreamAttachmentPicker> {
                                 );
                               },
                       ),
+                    if (widget.allowedAttachmentTypes
+                        .contains(DefaultAttachmentTypes.video))
                       IconButton(
                         padding: const EdgeInsets.all(0),
                         icon: StreamSvgIcon.record(
@@ -172,7 +189,8 @@ class _StreamAttachmentPickerState extends State<StreamAttachmentPicker> {
                         ),
                         onPressed: attachmentLimitCrossed ||
                                 (_attachmentContainsFile &&
-                                  messageInputController.attachments.isNotEmpty)
+                                    messageInputController
+                                        .attachments.isNotEmpty)
                             ? null
                             : () {
                                 widget.onFilePicked(
@@ -205,7 +223,11 @@ class _StreamAttachmentPickerState extends State<StreamAttachmentPicker> {
                     ),
                   ),
                 ),
-                if (widget.isOpen)
+                if (widget.isOpen &&
+                    (widget.allowedAttachmentTypes
+                            .contains(DefaultAttachmentTypes.image) ||
+                        (widget.allowedAttachmentTypes
+                            .contains(DefaultAttachmentTypes.file))))
                   Expanded(
                     child: DecoratedBox(
                       decoration: BoxDecoration(
@@ -229,6 +251,7 @@ class _StreamAttachmentPickerState extends State<StreamAttachmentPicker> {
                             _addAssetAttachment(media);
                           }
                         },
+                        allowedAttachmentTypes: widget.allowedAttachmentTypes,
                       ),
                     ),
                   ),
@@ -326,6 +349,7 @@ class _PickerWidget extends StatefulWidget {
     required this.onAddMoreFilesClick,
     required this.onMediaSelected,
     required this.streamChatTheme,
+    required this.allowedAttachmentTypes,
   }) : super(key: key);
 
   final int filePickerIndex;
@@ -334,6 +358,7 @@ class _PickerWidget extends StatefulWidget {
   final void Function(DefaultAttachmentTypes) onAddMoreFilesClick;
   final void Function(AssetEntity) onMediaSelected;
   final StreamChatThemeData streamChatTheme;
+  final List<DefaultAttachmentTypes> allowedAttachmentTypes;
 
   @override
   _PickerWidgetState createState() => _PickerWidgetState();
@@ -361,7 +386,9 @@ class _PickerWidgetState extends State<_PickerWidget> {
         }
 
         if (snapshot.data!) {
-          if (widget.containsFile) {
+          if (widget.containsFile ||
+              !widget.allowedAttachmentTypes
+                  .contains(DefaultAttachmentTypes.image)) {
             return GestureDetector(
               onTap: () {
                 widget.onAddMoreFilesClick(DefaultAttachmentTypes.file);