Groups: self-management of membership of groups

- Add Groups tab

vector-im/riot-meta#114

Riot/ViewController/GroupsViewController.h

@@ -0,0 +1,52 @@
+/*
+ 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>
+
+/**
+ The `GroupsViewController` screen is the view controller displayed when `Groups` tab is selected.
+ */
+@interface GroupsViewController : MXKGroupListViewController <MXKGroupListViewControllerDelegate>
+{
+@protected
+    /**
+     Current alert (if any).
+     */
+    UIAlertController *currentAlert;
+    
+    /**
+     The image view of the (+) button.
+     */
+    UIImageView* plusButtonImageView;
+}
+
+/**
+ If YES, the table view will scroll at the top on the next data source refresh.
+ It comes back to NO after each refresh.
+ */
+@property (nonatomic) BOOL shouldScrollToTopOnRefresh;
+
+/**
+ Tell whether the search bar at the top of the groups table is enabled. YES by default.
+ */
+@property (nonatomic) BOOL enableSearchBar;
+
+/**
+ The Google Analytics Instance screen name (Default is "Groups").
+ */
+@property (nonatomic) NSString *screenName;
+
+@end