Move cell data and data sources to corresponding modules.

Riot/Modules/Room/DataSources/RoomDataSource.h

@@ -0,0 +1,44 @@
+/*
+ Copyright 2015 OpenMarket Ltd
+ Copyright 2017 Vector Creations Ltd
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
+
+#import <MatrixKit/MatrixKit.h>
+
+#import "WidgetManager.h"
+
+/**
+ The data source for `RoomViewController` in Vector.
+ */
+@interface RoomDataSource : MXKRoomDataSource
+
+/**
+ The event id of the current selected event if any. Default is nil.
+ */
+@property(nonatomic) NSString *selectedEventId;
+
+/**
+ Tell whether the initial event of the timeline (if any) must be marked. Default is NO.
+ */
+@property(nonatomic) BOOL markTimelineInitialEvent;
+
+/**
+ Check if there is an active jitsi widget in the room and return it.
+
+ @return a widget representating the active jitsi conference in the room. Else, nil.
+ */
+- (Widget *)jitsiWidget;
+
+@end