Empty screens: Implement empty view management in RecentsViewController.

Riot/Modules/Common/Recents/RecentsViewController.h

@@ -17,6 +17,8 @@
 
 #import <MatrixKit/MatrixKit.h>
 
+@class RootTabEmptyView;
+
 @interface RecentsViewController : MXKRecentListViewController <MXKRecentListViewControllerDelegate>
 {
 @protected
@@ -83,6 +85,11 @@
  */
 @property (nonatomic) NSString *screenName;
 
+/**
+ Empty view to display when there is no item to show on the screen.
+ */
+@property (nonatomic, weak) RootTabEmptyView *emptyView;
+
 /**
  Return the sticky header for the specified section of the table view
  
@@ -177,5 +184,17 @@
 - (void)didTapOnSectionHeader:(UIGestureRecognizer*)gestureRecognizer;
 - (void)didSwipeOnSectionHeader:(UISwipeGestureRecognizer*)gestureRecognizer;
 
+#pragma mark - Empty view
+
+/**
+ Overrides this method to fill the empty view with data.
+ */
+- (void)updateEmptyView;
+
+/**
+ Overrides this method to indicate if empty view should be shown. Returns NO by default.
+ */
+- (BOOL)shouldShowEmptyView;
+
 @end