refactor

app/src/main/java/chat/rocket/android/fragment/chatroom/RoomFragment.java

@@ -22,7 +22,6 @@ import java.util.UUID;
 import chat.rocket.android.R;
 import chat.rocket.android.api.MethodCallHelper;
 import chat.rocket.android.fragment.chatroom.dialog.FileUploadProgressDialogFragment;
-import chat.rocket.android.fragment.chatroom.dialog.MessageSelectionDialogFragment;
 import chat.rocket.android.fragment.chatroom.dialog.UsersOfRoomDialogFragment;
 import chat.rocket.android.helper.FileUploadHelper;
 import chat.rocket.android.helper.LoadMoreScrollListener;
@@ -32,12 +31,12 @@ import chat.rocket.android.helper.TextUtils;
 import chat.rocket.android.layouthelper.chatroom.MessageFormManager;
 import chat.rocket.android.layouthelper.chatroom.MessageListAdapter;
 import chat.rocket.android.layouthelper.chatroom.PairedMessage;
+import chat.rocket.android.layouthelper.extra_action.MessageExtraActionBehavior;
 import chat.rocket.android.log.RCLog;
-import chat.rocket.android.message.AbstractMessageSpec;
-import chat.rocket.android.message.AudioUploadMessageSpec;
-import chat.rocket.android.message.AbstractUploadMessageSpec;
-import chat.rocket.android.message.ImageUploadMessageSpec;
-import chat.rocket.android.message.VideoUploadMessageSpec;
+import chat.rocket.android.layouthelper.extra_action.upload.AudioUploadActionItem;
+import chat.rocket.android.layouthelper.extra_action.upload.AbstractUploadActionItem;
+import chat.rocket.android.layouthelper.extra_action.upload.ImageUploadActionItem;
+import chat.rocket.android.layouthelper.extra_action.upload.VideoUploadActionItem;
 import chat.rocket.android.model.ServerConfig;
 import chat.rocket.android.model.SyncState;
 import chat.rocket.android.model.ddp.Message;
@@ -70,11 +69,7 @@ public class RoomFragment extends AbstractChatRoomFragment
   private String token;
   private LoadMoreScrollListener scrollListener;
   private RealmObjectObserver<LoadMessageProcedure> procedureObserver;
-  private MessageFormManager messageComposerManager;
-
-  private MessageSelectionDialogFragment.ClickListener messageSelectionClickListener =
-      messageSpec -> RoomFragmentPermissionsDispatcher
-          .onMessageSpecSelectedWithCheck(RoomFragment.this, messageSpec);
+  private MessageFormManager messageFormManager;
 
   public RoomFragment() {
   }
@@ -226,8 +221,8 @@ public class RoomFragment extends AbstractChatRoomFragment
   private void setupMessageComposer() {
     final MessageFormLayout messageFormLayout =
         (MessageFormLayout) rootView.findViewById(R.id.message_composer);
-    messageComposerManager = new MessageFormManager(messageFormLayout);
-    messageComposerManager.setSendMessageCallback(messageText ->
+    messageFormManager = new MessageFormManager(messageFormLayout);
+    messageFormManager.setSendMessageCallback(messageText ->
         realmHelper.executeTransaction(realm ->
             realm.createOrUpdateObjectFromJson(Message.class, new JSONObject()
                 .put("_id", UUID.randomUUID().toString())
@@ -235,25 +230,17 @@ public class RoomFragment extends AbstractChatRoomFragment
                 .put("ts", System.currentTimeMillis())
                 .put("rid", roomId)
                 .put("msg", messageText))));
-    messageComposerManager.setExtrasPickerListener(() -> {
-      MessageSelectionDialogFragment fragment = MessageSelectionDialogFragment.create();
-
-      fragment.addMessageSpec(new ImageUploadMessageSpec());
-      fragment.addMessageSpec(new AudioUploadMessageSpec());
-      fragment.addMessageSpec(new VideoUploadMessageSpec());
-
-      fragment.setListener(messageSelectionClickListener);
-
-      fragment.show(getFragmentManager(), MessageSelectionDialogFragment.TAG);
-
-      closeSideMenuIfNeeded();
-    });
+    messageFormManager.registerExtraActionItem(new ImageUploadActionItem());
+    messageFormManager.registerExtraActionItem(new AudioUploadActionItem());
+    messageFormManager.registerExtraActionItem(new VideoUploadActionItem());
+    messageFormManager.setExtraActionPickerCallback(item ->
+        RoomFragmentPermissionsDispatcher.onExtraActionSelectedWithCheck(RoomFragment.this, item));
   }
 
   @Override
   public void onActivityResult(int requestCode, int resultCode, Intent data) {
     super.onActivityResult(requestCode, resultCode, data);
-    if (requestCode != AbstractUploadMessageSpec.RC_UPL || resultCode != Activity.RESULT_OK) {
+    if (requestCode != AbstractUploadActionItem.RC_UPL || resultCode != Activity.RESULT_OK) {
       return;
     }
 
@@ -381,7 +368,7 @@ public class RoomFragment extends AbstractChatRoomFragment
   }
 
   @NeedsPermission(Manifest.permission.READ_EXTERNAL_STORAGE)
-  protected void onMessageSpecSelected(AbstractMessageSpec messageSpec) {
-    messageSpec.onSelect(RoomFragment.this);
+  protected void onExtraActionSelected(MessageExtraActionBehavior action) {
+    action.handleItemSelectedOnFragment(RoomFragment.this);
   }
 }

app/src/main/java/chat/rocket/android/fragment/chatroom/dialog/MessageSelectionDialogFragment.java

-package chat.rocket.android.fragment.chatroom.dialog;
-
-import android.support.v7.widget.RecyclerView;
-
-import chat.rocket.android.R;
-import chat.rocket.android.layouthelper.chatroom.dialog.MessageSelectionAdapter;
-import chat.rocket.android.message.AbstractMessageSpec;
-
-public class MessageSelectionDialogFragment extends AbstractChatRoomDialogFragment {
-
-  public static final String TAG = "MessageSelectionDialogFragment";
-
-  private MessageSelectionAdapter adapter;
-  private ClickListener listener;
-
-  public static MessageSelectionDialogFragment create() {
-    return new MessageSelectionDialogFragment();
-  }
-
-  public MessageSelectionDialogFragment() {
-    adapter = new MessageSelectionAdapter();
-    adapter.setListener(messageSpec -> {
-      if (listener != null) {
-        listener.onClick(messageSpec);
-      }
-      dismiss();
-    });
-  }
-
-  public void addMessageSpec(AbstractMessageSpec abstractMessageSpec) {
-    adapter.addMessageSpec(abstractMessageSpec);
-  }
-
-  public void setListener(ClickListener listener) {
-    this.listener = listener;
-  }
-
-  @Override
-  protected int getLayout() {
-    return R.layout.dialog_message_selection;
-  }
-
-  @Override
-  protected void onSetupDialog() {
-    RecyclerView messageSpecList = (RecyclerView) getDialog().findViewById(R.id.message_spec_list);
-    messageSpecList.setAdapter(adapter);
-  }
-
-  public interface ClickListener {
-    void onClick(AbstractMessageSpec abstractMessageSpec);
-  }
-}

app/src/main/java/chat/rocket/android/layouthelper/chatroom/MessageFormManager.java

 package chat.rocket.android.layouthelper.chatroom;
 
+import java.util.HashMap;
 import bolts.Task;
+import chat.rocket.android.layouthelper.extra_action.AbstractExtraActionItem;
 import chat.rocket.android.widget.message.MessageFormLayout;
 
 /**
@@ -9,27 +11,30 @@ import chat.rocket.android.widget.message.MessageFormLayout;
 public class MessageFormManager {
   private final MessageFormLayout messageFormLayout;
   private SendMessageCallback sendMessageCallback;
-  private ExtrasPickerListener extrasPickerListener;
+  private ExtraActionPickerCallback extraActionPickerCallback;
+  private final HashMap<Integer, AbstractExtraActionItem> extraActionItemMap;
 
   public MessageFormManager(MessageFormLayout messageFormLayout) {
     this.messageFormLayout = messageFormLayout;
+    this.extraActionItemMap = new HashMap<>();
     init();
   }
 
   private void init() {
     messageFormLayout.setOnActionListener(new MessageFormLayout.ActionListener() {
       @Override
-      public void onSubmit(String message) {
+      public void onSubmitText(String message) {
         sendMessage(message);
       }
 
       @Override
-      public void onExtra() {
-        openExtras();
-      }
-
-      @Override
-      public void onCancel() {
+      public void onExtraActionSelected(int itemId) {
+        if (extraActionItemMap.containsKey(itemId)) {
+          AbstractExtraActionItem item = extraActionItemMap.get(itemId);
+          if (extraActionPickerCallback != null) {
+            extraActionPickerCallback.onExtraActionSelected(item);
+          }
+        }
       }
     });
   }
@@ -38,8 +43,8 @@ public class MessageFormManager {
     this.sendMessageCallback = sendMessageCallback;
   }
 
-  public void setExtrasPickerListener(ExtrasPickerListener listener) {
-    extrasPickerListener = listener;
+  public void setExtraActionPickerCallback(ExtraActionPickerCallback extraActionPickerCallback) {
+    this.extraActionPickerCallback = extraActionPickerCallback;
   }
 
   public void clearComposingText() {
@@ -52,7 +57,7 @@ public class MessageFormManager {
     }
 
     messageFormLayout.setEnabled(false);
-    sendMessageCallback.onSubmit(message).onSuccess(task -> {
+    sendMessageCallback.onSubmitText(message).onSuccess(task -> {
       clearComposingText();
       return null;
     }).continueWith(task -> {
@@ -61,19 +66,16 @@ public class MessageFormManager {
     });
   }
 
-  private void openExtras() {
-    if (extrasPickerListener == null) {
-      return;
-    }
-
-    extrasPickerListener.onOpen();
+  public void registerExtraActionItem(AbstractExtraActionItem actionItem) {
+    messageFormLayout.addExtraActionItem(actionItem);
+    extraActionItemMap.put(actionItem.getItemId(), actionItem);
   }
 
   public interface SendMessageCallback {
-    Task<Void> onSubmit(String messageText);
+    Task<Void> onSubmitText(String messageText);
   }
 
-  public interface ExtrasPickerListener {
-    void onOpen();
+  public interface ExtraActionPickerCallback {
+    void onExtraActionSelected(AbstractExtraActionItem item);
   }
 }

app/src/main/java/chat/rocket/android/layouthelper/chatroom/dialog/MessageSelectionAdapter.java

-package chat.rocket.android.layouthelper.chatroom.dialog;
-
-import android.support.v7.widget.RecyclerView;
-import android.view.LayoutInflater;
-import android.view.View;
-import android.view.ViewGroup;
-
-import java.util.ArrayList;
-import java.util.List;
-import chat.rocket.android.R;
-import chat.rocket.android.message.AbstractMessageSpec;
-
-public class MessageSelectionAdapter
-    extends RecyclerView.Adapter<MessageSelectionViewHolder> {
-
-  private List<AbstractMessageSpec> abstractMessageSpecs = new ArrayList<>();
-  private ClickListener listener;
-
-  public void setListener(ClickListener listener) {
-    this.listener = listener;
-  }
-
-  public void addMessageSpec(AbstractMessageSpec abstractMessageSpec) {
-    abstractMessageSpecs.add(abstractMessageSpec);
-    notifyDataSetChanged();
-  }
-
-  @Override
-  public MessageSelectionViewHolder onCreateViewHolder(ViewGroup parent,
-                                                       int viewType) {
-    View itemView = LayoutInflater.from(parent.getContext())
-        .inflate(R.layout.dialog_message_selection_item, parent, false);
-
-    itemView.setOnClickListener(view -> {
-      if (listener != null) {
-        listener.onClick((AbstractMessageSpec) itemView.getTag());
-      }
-    });
-
-    return new MessageSelectionViewHolder(itemView);
-  }
-
-  @Override
-  public void onBindViewHolder(MessageSelectionViewHolder holder,
-                               int position) {
-    holder.onBind(abstractMessageSpecs.get(position));
-  }
-
-  @Override
-  public int getItemCount() {
-    return abstractMessageSpecs.size();
-  }
-
-
-  public interface ClickListener {
-    void onClick(AbstractMessageSpec abstractMessageSpec);
-  }
-}

app/src/main/java/chat/rocket/android/layouthelper/extra_action/AbstractExtraActionItem.java

+package chat.rocket.android.layouthelper.extra_action;
+
+import chat.rocket.android.widget.message.MessageExtraActionItemPresenter;
+
+/**
+ * Simple base class that implements MessageExtraActionBehavior, MessageExtraActionItemPresenter.
+ */
+public abstract class AbstractExtraActionItem
+    implements MessageExtraActionBehavior, MessageExtraActionItemPresenter {
+}

app/src/main/java/chat/rocket/android/layouthelper/extra_action/MessageExtraActionBehavior.java

+package chat.rocket.android.layouthelper.extra_action;
+
+import android.app.Activity;
+import android.support.v4.app.Fragment;
+
+public interface MessageExtraActionBehavior {
+
+  void handleItemSelectedOnActivity(Activity activity);
+
+  void handleItemSelectedOnFragment(Fragment fragment);
+}

app/src/main/java/chat/rocket/android/layouthelper/extra_action/upload/AbstractUploadActionItem.java

+package chat.rocket.android.layouthelper.extra_action.upload;
+
+import android.app.Activity;
+import android.content.Intent;
+import android.support.v4.app.Fragment;
+
+import chat.rocket.android.R;
+import chat.rocket.android.layouthelper.extra_action.AbstractExtraActionItem;
+
+public abstract class AbstractUploadActionItem extends AbstractExtraActionItem {
+
+  public static final int RC_UPL = 0x12;
+
+  @Override
+  public void handleItemSelectedOnActivity(Activity activity) {
+    activity.startActivityForResult(getIntentForPickFile(), RC_UPL);
+  }
+
+  @Override
+  public void handleItemSelectedOnFragment(Fragment fragment) {
+    fragment.startActivityForResult(getIntentForPickFile(), RC_UPL);
+  }
+
+  protected abstract Intent getIntentForPickFile();
+
+  @Override
+  public int getBackgroundTint() {
+    return R.color.colorAccent;
+  }
+}

app/src/main/java/chat/rocket/android/message/AudioUploadMessageSpec.java → app/src/main/java/chat/rocket/android/layouthelper/extra_action/upload/AudioUploadActionItem.java

-package chat.rocket.android.message;
+package chat.rocket.android.layouthelper.extra_action.upload;
 
 import android.content.Intent;
 
 import chat.rocket.android.R;
 
-public class AudioUploadMessageSpec extends AbstractUploadMessageSpec {
+public class AudioUploadActionItem extends AbstractUploadActionItem {
 
   @Override
-  protected Intent getIntent() {
+  public int getItemId() {
+    return 11;
+  }
+
+  @Override
+  protected Intent getIntentForPickFile() {
     Intent intent = new Intent();
     intent.setType("audio/*");
     intent.setAction(Intent.ACTION_GET_CONTENT);
@@ -15,24 +20,12 @@ public class AudioUploadMessageSpec extends AbstractUploadMessageSpec {
   }
 
   @Override
-  public ViewData getSpecificViewData() {
-    return new AudioUploadViewData();
+  public int getIcon() {
+    return R.drawable.ic_audiotrack_white_24dp;
   }
 
-  private static class AudioUploadViewData implements AbstractMessageSpec.ViewData {
-    @Override
-    public int getBackgroundTint() {
-      return R.color.colorAccent;
-    }
-
-    @Override
-    public int getIcon() {
-      return R.drawable.ic_audiotrack_white_24dp;
-    }
-
-    @Override
-    public int getTitle() {
-      return R.string.audio_upload_message_spec_title;
-    }
+  @Override
+  public int getTitle() {
+    return R.string.audio_upload_message_spec_title;
   }
 }

app/src/main/java/chat/rocket/android/message/ImageUploadMessageSpec.java → app/src/main/java/chat/rocket/android/layouthelper/extra_action/upload/ImageUploadActionItem.java

-package chat.rocket.android.message;
+package chat.rocket.android.layouthelper.extra_action.upload;
 
 import android.content.Intent;
 
 import chat.rocket.android.R;
 
-public class ImageUploadMessageSpec extends AbstractUploadMessageSpec {
+public class ImageUploadActionItem extends AbstractUploadActionItem {
 
   @Override
-  public ViewData getSpecificViewData() {
-    return new ImageUploadViewData();
+  public int getItemId() {
+    return 10;
   }
 
   @Override
-  protected Intent getIntent() {
+  protected Intent getIntentForPickFile() {
     Intent intent = new Intent();
     intent.setType("image/*");
     intent.setAction(Intent.ACTION_GET_CONTENT);
     return Intent.createChooser(intent, "Select Picture to Upload");
   }
 
-  private static class ImageUploadViewData implements AbstractMessageSpec.ViewData {
-    @Override
-    public int getBackgroundTint() {
-      return R.color.colorAccent;
-    }
-
-    @Override
-    public int getIcon() {
-      return R.drawable.ic_insert_photo_white_24dp;
-    }
+  @Override
+  public int getIcon() {
+    return R.drawable.ic_insert_photo_white_24dp;
+  }
 
-    @Override
-    public int getTitle() {
-      return R.string.image_upload_message_spec_title;
-    }
+  @Override
+  public int getTitle() {
+    return R.string.image_upload_message_spec_title;
   }
 }

app/src/main/java/chat/rocket/android/message/VideoUploadMessageSpec.java → app/src/main/java/chat/rocket/android/layouthelper/extra_action/upload/VideoUploadActionItem.java

-package chat.rocket.android.message;
+package chat.rocket.android.layouthelper.extra_action.upload;
 
 import android.content.Intent;
 
 import chat.rocket.android.R;
 
-public class VideoUploadMessageSpec extends AbstractUploadMessageSpec {
+public class VideoUploadActionItem extends AbstractUploadActionItem {
 
   @Override
-  public ViewData getSpecificViewData() {
-    return new VideoUploadViewData();
+  public int getItemId() {
+    return 12;
   }
 
   @Override
-  protected Intent getIntent() {
+  protected Intent getIntentForPickFile() {
     Intent intent = new Intent();
     intent.setType("video/*");
     intent.setAction(Intent.ACTION_GET_CONTENT);
     return Intent.createChooser(intent, "Select Video to Upload");
   }
 
-  private static class VideoUploadViewData implements AbstractMessageSpec.ViewData {
-    @Override
-    public int getBackgroundTint() {
-      return R.color.colorAccent;
-    }
-
-    @Override
-    public int getIcon() {
-      return R.drawable.ic_video_call_white_24dp;
-    }
+  @Override
+  public int getIcon() {
+    return R.drawable.ic_video_call_white_24dp;
+  }
 
-    @Override
-    public int getTitle() {
-      return R.string.video_upload_message_spec_title;
-    }
+  @Override
+  public int getTitle() {
+    return R.string.video_upload_message_spec_title;
   }
 }

app/src/main/java/chat/rocket/android/message/AbstractMessageSpec.java

-package chat.rocket.android.message;
-
-import android.app.Activity;
-import android.support.v4.app.Fragment;
-import android.support.annotation.ColorRes;
-import android.support.annotation.DrawableRes;
-import android.support.annotation.StringRes;
-
-public abstract class AbstractMessageSpec {
-
-  public abstract ViewData getViewData();
-
-  public abstract void onSelect(Activity activity);
-
-  public abstract void onSelect(Fragment fragment);
-
-  public interface ViewData {
-    @ColorRes
-    int getBackgroundTint();
-
-    @DrawableRes
-    int getIcon();
-
-    @StringRes
-    int getTitle();
-  }
-}

app/src/main/java/chat/rocket/android/message/AbstractUploadMessageSpec.java

-package chat.rocket.android.message;
-
-import android.app.Activity;
-import android.support.v4.app.Fragment;
-import android.content.Intent;
-
-public abstract class AbstractUploadMessageSpec extends AbstractMessageSpec {
-
-  public static final int RC_UPL = 0x12;
-
-  private ViewData viewData;
-
-  @Override
-  public ViewData getViewData() {
-    if (viewData == null) {
-      viewData = getSpecificViewData();
-    }
-    return viewData;
-  }
-
-  @Override
-  public void onSelect(Activity activity) {
-    activity.startActivityForResult(getIntent(), RC_UPL);
-  }
-
-  @Override
-  public void onSelect(Fragment fragment) {
-    fragment.startActivityForResult(getIntent(), RC_UPL);
-  }
-
-  protected abstract Intent getIntent();
-
-  protected abstract ViewData getSpecificViewData();
-}

rocket-chat-android-widgets/build.gradle

@@ -38,4 +38,5 @@ dependencies {
   compile rootProject.ext.okhttp3
   compile rootProject.ext.picasso
   compile rootProject.ext.picasso2Okhttp3Downloader
+  compile rootProject.ext.boltsTask
 }

rocket-chat-android-widgets/src/main/java/chat/rocket/android/widget/internal/ExtraActionPickerDialog.java

+package chat.rocket.android.widget.internal;
+
+import android.content.Context;
+import android.content.DialogInterface;
+import android.os.Bundle;
+import android.os.OperationCanceledException;
+import android.support.annotation.NonNull;
+import android.support.design.widget.BottomSheetDialog;
+import android.support.v7.widget.RecyclerView;
+
+import java.util.List;
+import bolts.Task;
+import bolts.TaskCompletionSource;
+import chat.rocket.android.widget.R;
+import chat.rocket.android.widget.layouthelper.MessageExtraActionListAdapter;
+import chat.rocket.android.widget.message.MessageExtraActionItemPresenter;
+
+public class ExtraActionPickerDialog {
+  /**
+   * show extra actions picker diaog.
+   */
+  public static Task<Integer> showAsTask(Context context,
+                                         List<MessageExtraActionItemPresenter> actionItems) {
+    final TaskCompletionSource<Integer> task = new TaskCompletionSource<>();
+    Impl dialog = new Impl(context, actionItems);
+    dialog.setCallback(new Impl.Callback() {
+      @Override
+      public void onItemSelected(int itemId) {
+        task.setResult(itemId);
+      }
+
+      @Override
+      public void onCanceled() {
+        task.setError(new OperationCanceledException());
+      }
+    });
+    dialog.show();
+
+    return task.getTask();
+  }
+
+  private static class Impl extends BottomSheetDialog {
+    private interface Callback {
+      void onItemSelected(int itemId);
+
+      void onCanceled();
+    }
+
+    private Callback callback;
+    private final List<MessageExtraActionItemPresenter> actionItems;
+
+    public void setCallback(Callback callback) {
+      this.callback = callback;
+    }
+
+    public Impl(@NonNull Context context, List<MessageExtraActionItemPresenter> actionItems) {
+      super(context);
+      this.actionItems = actionItems;
+    }
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+      super.onCreate(savedInstanceState);
+      setContentView(R.layout.dialog_message_extra_action_picker);
+      MessageExtraActionListAdapter adapter = new MessageExtraActionListAdapter(actionItems);
+      adapter.setOnItemClickListener(new MessageExtraActionListAdapter.OnItemClickListener() {
+        @Override
+        public void onItemClick(int itemId) {
+          doCallback(itemId);
+          dismiss();
+        }
+      });
+      RecyclerView recyclerView = (RecyclerView) findViewById(R.id.message_extra_action_listview);
+      recyclerView.setAdapter(adapter);
+
+      setOnCancelListener(new OnCancelListener() {
+        @Override
+        public void onCancel(DialogInterface dialogInterface) {
+          if (callback != null) {
+            callback.onCanceled();
+          }
+        }
+      });
+    }
+
+    private void doCallback(int itemId) {
+      if (callback != null) {
+        callback.onItemSelected(itemId);
+      }
+    }
+  }
+}
\ No newline at end of file

app/src/main/java/chat/rocket/android/layouthelper/chatroom/dialog/MessageSelectionViewHolder.java → rocket-chat-android-widgets/src/main/java/chat/rocket/android/widget/layouthelper/MessageExtraActionItemViewHolder.java

-package chat.rocket.android.layouthelper.chatroom.dialog;
+package chat.rocket.android.widget.layouthelper;
 
 import android.support.annotation.ColorRes;
 import android.support.annotation.DrawableRes;
@@ -10,40 +10,39 @@ import android.view.View;
 import android.widget.ImageView;
 import android.widget.TextView;
 
-import chat.rocket.android.R;
-import chat.rocket.android.message.AbstractMessageSpec;
+import chat.rocket.android.widget.R;
+import chat.rocket.android.widget.message.MessageExtraActionItemPresenter;
 
-public class MessageSelectionViewHolder extends RecyclerView.ViewHolder {
+public class MessageExtraActionItemViewHolder extends RecyclerView.ViewHolder {
 
-  private ImageView messageSpecIcon;
-  private TextView messageSpecTitle;
+  private ImageView iconView;
+  private TextView titleView;
 
-  public MessageSelectionViewHolder(View itemView) {
+  public MessageExtraActionItemViewHolder(View itemView) {
     super(itemView);
-    messageSpecIcon = (ImageView) itemView.findViewById(R.id.message_spec_icon);
-    messageSpecTitle = (TextView) itemView.findViewById(R.id.message_spec_title);
+    iconView = (ImageView) itemView.findViewById(R.id.icon);
+    titleView = (TextView) itemView.findViewById(R.id.title);
   }
 
-  public void onBind(AbstractMessageSpec abstractMessageSpec) {
-    itemView.setTag(abstractMessageSpec);
+  public void onBind(MessageExtraActionItemPresenter actionItem) {
+    itemView.setTag(actionItem.getItemId());
 
-    AbstractMessageSpec.ViewData viewData = abstractMessageSpec.getViewData();
-    setIconBackgroundColorTint(viewData.getBackgroundTint());
-    setIcon(viewData.getIcon());
-    setTitle(viewData.getTitle());
+    setIconBackgroundColorTint(actionItem.getBackgroundTint());
+    setIcon(actionItem.getIcon());
+    setTitle(actionItem.getTitle());
   }
 
   public void setIconBackgroundColorTint(@ColorRes int color) {
 //    Drawable background = DrawableCompat.wrap(messageSpecIcon.getBackground());
-    DrawableCompat.setTint(messageSpecIcon.getBackground(),
-        ContextCompat.getColor(messageSpecIcon.getContext(), color));
+    DrawableCompat.setTint(iconView.getBackground(),
+        ContextCompat.getColor(iconView.getContext(), color));
   }
 
   public void setIcon(@DrawableRes int icon) {
-    messageSpecIcon.setImageResource(icon);
+    iconView.setImageResource(icon);
   }
 
   public void setTitle(@StringRes int title) {
-    messageSpecTitle.setText(title);
+    titleView.setText(title);
   }
 }

rocket-chat-android-widgets/src/main/java/chat/rocket/android/widget/layouthelper/MessageExtraActionListAdapter.java

+package chat.rocket.android.widget.layouthelper;
+
+import android.support.v7.widget.RecyclerView;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+import java.util.List;
+import chat.rocket.android.widget.R;
+import chat.rocket.android.widget.message.MessageExtraActionItemPresenter;
+
+public class MessageExtraActionListAdapter
+    extends RecyclerView.Adapter<MessageExtraActionItemViewHolder> {
+
+  private final List<MessageExtraActionItemPresenter> actionItems;
+  private OnItemClickListener listener;
+
+  public MessageExtraActionListAdapter(List<MessageExtraActionItemPresenter> actionItems) {
+    this.actionItems = actionItems;
+  }
+
+  public void setOnItemClickListener(OnItemClickListener listener) {
+    this.listener = listener;
+  }
+
+  @Override
+  public MessageExtraActionItemViewHolder onCreateViewHolder(ViewGroup parent,
+                                                             int viewType) {
+    View itemView = LayoutInflater.from(parent.getContext())
+        .inflate(R.layout.message_extra_action_item, parent, false);
+
+    itemView.setOnClickListener(new View.OnClickListener() {
+      @Override
+      public void onClick(View view) {
+        if (listener != null) {
+          if (view.getTag() != null) {
+            listener.onItemClick((int) view.getTag());
+          }
+        }
+      }
+    });
+
+    return new MessageExtraActionItemViewHolder(itemView);
+  }
+
+  @Override
+  public void onBindViewHolder(MessageExtraActionItemViewHolder holder,
+                               int position) {
+    holder.onBind(actionItems.get(position));
+  }
+
+  @Override
+  public int getItemCount() {
+    return actionItems.size();
+  }
+
+
+  public interface OnItemClickListener {
+    void onItemClick(int itemId);
+  }
+}

rocket-chat-android-widgets/src/main/java/chat/rocket/android/widget/message/MessageExtraActionItemPresenter.java

+package chat.rocket.android.widget.message;
+
+import android.support.annotation.ColorRes;
+import android.support.annotation.DrawableRes;
+import android.support.annotation.StringRes;
+
+/**
+ * View Data for message extra action item.
+ */
+public interface MessageExtraActionItemPresenter {
+
+  int getItemId();
+
+  @ColorRes
+  int getBackgroundTint();
+
+  @DrawableRes
+  int getIcon();
+
+  @StringRes
+  int getTitle();
+}

rocket-chat-android-widgets/src/main/java/chat/rocket/android/widget/message/MessageFormLayout.java

@@ -15,7 +15,12 @@ import android.widget.EditText;
 import android.widget.LinearLayout;
 import android.widget.TextView;
 
+import java.util.ArrayList;
+import java.util.List;
+import bolts.Continuation;
+import bolts.Task;
 import chat.rocket.android.widget.R;
+import chat.rocket.android.widget.internal.ExtraActionPickerDialog;
 
 public class MessageFormLayout extends LinearLayout {
 
@@ -24,6 +29,7 @@ public class MessageFormLayout extends LinearLayout {
 
   private View btnExtra;
   private View btnSubmit;
+  private List<MessageExtraActionItemPresenter> extraActionItems;
 
   public MessageFormLayout(Context context) {
     super(context);
@@ -51,6 +57,7 @@ public class MessageFormLayout extends LinearLayout {
   }
 
   private void init() {
+    extraActionItems = new ArrayList<>();
     composer = (ViewGroup) LayoutInflater.from(getContext())
         .inflate(R.layout.message_composer, this, false);
 
@@ -58,10 +65,8 @@ public class MessageFormLayout extends LinearLayout {
 
     btnExtra.setOnClickListener(new OnClickListener() {
       @Override
-      public void onClick(View v) {
-        if (actionListener != null) {
-          actionListener.onExtra();
-        }
+      public void onClick(View view) {
+        showExtraActionSelectionDialog();
       }
     });
 
@@ -72,7 +77,7 @@ public class MessageFormLayout extends LinearLayout {
       public void onClick(View view) {
         String messageText = getText();
         if (messageText.length() > 0 && actionListener != null) {
-          actionListener.onSubmit(messageText);
+          actionListener.onSubmitText(messageText);
         }
       }
     });
@@ -105,6 +110,20 @@ public class MessageFormLayout extends LinearLayout {
     addView(composer);
   }
 
+  public void addExtraActionItem(MessageExtraActionItemPresenter itemPresenter) {
+    boolean found = false;
+    for (MessageExtraActionItemPresenter item : extraActionItems) {
+      if (item.getItemId() == itemPresenter.getItemId()) {
+        found = true;
+        break;
+      }
+    }
+
+    if (!found) {
+      extraActionItems.add(itemPresenter);
+    }
+  }
+
   private TextView getEditor() {
     return (TextView) composer.findViewById(R.id.editor);
   }
@@ -140,11 +159,23 @@ public class MessageFormLayout extends LinearLayout {
     });
   }
 
-  public interface ActionListener {
-    void onSubmit(String message);
+  private void showExtraActionSelectionDialog() {
+    ExtraActionPickerDialog.showAsTask(getContext(), extraActionItems)
+        .onSuccess(new Continuation<Integer, Object>() {
+          @Override
+          public Object then(Task<Integer> task) throws Exception {
+            int which = task.getResult();
+            if (actionListener != null) {
+              actionListener.onExtraActionSelected(which);
+            }
+            return null;
+          }
+        });
+  }
 
-    void onExtra();
+  public interface ActionListener {
+    void onSubmitText(String message);
 
-    void onCancel();
+    void onExtraActionSelected(int itemId);
   }
 }

app/src/main/res/layout/dialog_message_selection.xml → rocket-chat-android-widgets/src/main/res/layout/dialog_message_extra_action_picker.xml

 <?xml version="1.0" encoding="utf-8"?>
 <chat.rocket.android.widget.AutofitRecyclerView xmlns:android="http://schemas.android.com/apk/res/android"
         xmlns:tools="http://schemas.android.com/tools"
-        android:id="@+id/message_spec_list"
+        android:id="@+id/message_extra_action_listview"
         android:layout_width="match_parent"
         android:layout_height="match_parent"
         android:columnWidth="80dp"
-        tools:listitem="@layout/dialog_message_selection_item"
+        tools:listitem="@layout/message_extra_action_item"
         android:clipToPadding="false">
 
 </chat.rocket.android.widget.AutofitRecyclerView>
\ No newline at end of file

app/src/main/res/layout/dialog_message_selection_item.xml → rocket-chat-android-widgets/src/main/res/layout/message_extra_action_item.xml

 <?xml version="1.0" encoding="utf-8"?>
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
-        xmlns:tools="http://schemas.android.com/tools"
         android:orientation="vertical"
         android:layout_width="80dp"
         android:layout_height="wrap_content"
-        android:padding="@dimen/margin_8">
+        android:padding="8dp">
 
     <ImageView
-            android:id="@+id/message_spec_icon"
+            android:id="@+id/icon"
             android:layout_width="64dp"
             android:layout_height="64dp"
-            android:padding="@dimen/margin_16"
-            tools:src="@drawable/ic_insert_photo_white_24dp"
+            android:padding="16dp"
             android:layout_marginBottom="4dp"
             android:background="@drawable/circle_black" />
 
     <TextView
-            android:id="@+id/message_spec_title"
+            android:id="@+id/title"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
-            android:gravity="center_horizontal"
-            tools:text="Attach file" />
+            android:gravity="center_horizontal"/>
 
 </LinearLayout>
\ No newline at end of file