Recents: Recognise server notices room(s) and put them in the dedicated section

Riot/Assets/en.lproj/Vector.strings

@@ -133,6 +133,7 @@
 "room_recents_conversations_section" = "ROOMS";
 "room_recents_no_conversation" = "No rooms";
 "room_recents_low_priority_section" = "LOW PRIORITY";
+"room_recents_server_notice_section" = "SYSTEM ALERTS";
 "room_recents_invites_section" = "INVITES";
 "room_recents_start_chat_with" = "Start chat";
 "room_recents_create_empty_room" = "Create room";

Riot/Modules/Common/Recents/DataSources/RecentsDataSource.h

@@ -52,12 +52,14 @@ extern NSString *const kRecentsDataSourceTapOnDirectoryServerChange;
 @property (nonatomic) NSInteger peopleSection;
 @property (nonatomic) NSInteger conversationSection;
 @property (nonatomic) NSInteger lowPrioritySection;
+@property (nonatomic) NSInteger serverNoticeSection;
 
 @property (nonatomic, readonly) NSArray* invitesCellDataArray;
 @property (nonatomic, readonly) NSArray* favoriteCellDataArray;
 @property (nonatomic, readonly) NSArray* peopleCellDataArray;
 @property (nonatomic, readonly) NSArray* conversationCellDataArray;
 @property (nonatomic, readonly) NSArray* lowPriorityCellDataArray;
+@property (nonatomic, readonly) NSArray* serverNoticeCellDataArray;
 
 /**
  Set the delegate by specifying the selected display mode.

Riot/Modules/Common/Recents/DataSources/RecentsDataSource.m

@@ -32,7 +32,8 @@
 #define RECENTSDATASOURCE_SECTION_FAVORITES     0x04
 #define RECENTSDATASOURCE_SECTION_CONVERSATIONS 0x08
 #define RECENTSDATASOURCE_SECTION_LOWPRIORITY   0x10
-#define RECENTSDATASOURCE_SECTION_PEOPLE        0x20
+#define RECENTSDATASOURCE_SECTION_SERVERNOTICE  0x20
+#define RECENTSDATASOURCE_SECTION_PEOPLE        0x40
 
 #define RECENTSDATASOURCE_DEFAULT_SECTION_HEADER_HEIGHT     30.0
 #define RECENTSDATASOURCE_DIRECTORY_SECTION_HEADER_HEIGHT   65.0
@@ -46,6 +47,7 @@ @interface RecentsDataSource()
     NSMutableArray* peopleCellDataArray;
     NSMutableArray* conversationCellDataArray;
     NSMutableArray* lowPriorityCellDataArray;
+    NSMutableArray* serverNoticeCellDataArray;
 
     NSInteger shrinkedSectionsBitMask;
 
@@ -61,9 +63,9 @@ @interface RecentsDataSource()
 @end
 
 @implementation RecentsDataSource
-@synthesize directorySection, invitesSection, favoritesSection, peopleSection, conversationSection, lowPrioritySection;
+@synthesize directorySection, invitesSection, favoritesSection, peopleSection, conversationSection, lowPrioritySection, serverNoticeSection;
 @synthesize hiddenCellIndexPath, droppingCellIndexPath, droppingCellBackGroundView;
-@synthesize invitesCellDataArray, favoriteCellDataArray, peopleCellDataArray, conversationCellDataArray, lowPriorityCellDataArray;
+@synthesize invitesCellDataArray, favoriteCellDataArray, peopleCellDataArray, conversationCellDataArray, lowPriorityCellDataArray, serverNoticeCellDataArray;
 
 - (instancetype)init
 {
@@ -74,6 +76,7 @@ - (instancetype)init
         favoriteCellDataArray = [[NSMutableArray alloc] init];
         peopleCellDataArray = [[NSMutableArray alloc] init];
         lowPriorityCellDataArray = [[NSMutableArray alloc] init];
+        serverNoticeCellDataArray = [[NSMutableArray alloc] init];
         conversationCellDataArray = [[NSMutableArray alloc] init];
 
         directorySection = -1;
@@ -82,6 +85,7 @@ - (instancetype)init
         peopleSection = -1;
         conversationSection = -1;
         lowPrioritySection = -1;
+        serverNoticeSection = -1;
 
         _areSectionsShrinkable = NO;
         shrinkedSectionsBitMask = 0;
@@ -242,7 +246,7 @@ - (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
     // Check whether all data sources are ready before rendering recents
     if (self.state == MXKDataSourceStateReady)
     {
-        directorySection = favoritesSection = peopleSection = conversationSection = lowPrioritySection = invitesSection = -1;
+        directorySection = favoritesSection = peopleSection = conversationSection = lowPrioritySection = invitesSection = serverNoticeSection = -1;
 
         if (invitesCellDataArray.count > 0)
         {
@@ -275,6 +279,11 @@ - (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
         {
             lowPrioritySection = sectionsCount++;
         }
+
+        if (serverNoticeCellDataArray.count > 0)
+        {
+            serverNoticeSection = sectionsCount++;
+        }
     }
 
     return sectionsCount;
@@ -311,6 +320,10 @@ - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger
     {
         count = lowPriorityCellDataArray.count;
     }
+    else if (section == serverNoticeSection && !(shrinkedSectionsBitMask & RECENTSDATASOURCE_SECTION_SERVERNOTICE))
+    {
+        count = serverNoticeCellDataArray.count;
+    }
     else if (section == invitesSection && !(shrinkedSectionsBitMask & RECENTSDATASOURCE_SECTION_INVITES))
     {
         count = invitesCellDataArray.count;
@@ -378,6 +391,11 @@ - (NSAttributedString *)attributedStringForHeaderTitleInSection:(NSInteger)secti
         count = lowPriorityCellDataArray.count;
         title = NSLocalizedStringFromTable(@"room_recents_low_priority_section", @"Vector", nil);
     }
+    else if (section == serverNoticeSection)
+    {
+        count = serverNoticeCellDataArray.count;
+        title = NSLocalizedStringFromTable(@"room_recents_server_notice_section", @"Vector", nil);
+    }
     else if (section == invitesSection)
     {
         count = invitesCellDataArray.count;
@@ -438,6 +456,10 @@ - (UIView *)badgeViewForHeaderTitleInHomeSection:(NSInteger)section
     {
         sectionArray = lowPriorityCellDataArray;
     }
+    else if (section == serverNoticeSection)
+    {
+        sectionArray = serverNoticeCellDataArray;
+    }
 
     for (id<MXKRecentCellDataStoring> cellData in sectionArray)
     {
@@ -521,6 +543,10 @@ - (UIView *)viewForHeaderInSection:(NSInteger)section withFrame:(CGRect)frame
         {
             sectionBitwise = RECENTSDATASOURCE_SECTION_LOWPRIORITY;
         }
+        else if (section == serverNoticeSection)
+        {
+            sectionBitwise = RECENTSDATASOURCE_SECTION_SERVERNOTICE;
+        }
         else if (section == invitesSection)
         {
             sectionBitwise = RECENTSDATASOURCE_SECTION_INVITES;
@@ -889,6 +915,13 @@ - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(N
             cellData = [lowPriorityCellDataArray objectAtIndex:cellDataIndex];
         }
     }
+    else if (tableSection == serverNoticeSection)
+    {
+        if (cellDataIndex < serverNoticeCellDataArray.count)
+        {
+            cellData = [serverNoticeCellDataArray objectAtIndex:cellDataIndex];
+        }
+    }
     else if (tableSection == invitesSection)
     {
         if (cellDataIndex < invitesCellDataArray.count)
@@ -1041,6 +1074,21 @@ - (NSIndexPath*)cellIndexPathWithRoomId:(NSString*)roomId andMatrixSession:(MXSe
             indexPath = [NSIndexPath indexPathForRow:index inSection:lowPrioritySection];
         }
     }
+
+    if (!indexPath && (serverNoticeSection >= 0))
+    {
+        index = [self cellIndexPosWithRoomId:roomId andMatrixSession:matrixSession within:serverNoticeCellDataArray];
+
+        if (index != NSNotFound)
+        {
+            // Check whether the low priority rooms are shrinked
+            if (shrinkedSectionsBitMask & RECENTSDATASOURCE_SECTION_SERVERNOTICE)
+            {
+                return nil;
+            }
+            indexPath = [NSIndexPath indexPathForRow:index inSection:serverNoticeSection];
+        }
+    }
 
     return indexPath;
 }
@@ -1055,12 +1103,13 @@ - (void)refreshRoomsSections
     [peopleCellDataArray removeAllObjects];
     [conversationCellDataArray removeAllObjects];
     [lowPriorityCellDataArray removeAllObjects];
+    [serverNoticeCellDataArray removeAllObjects];
 
     _missedFavouriteDiscussionsCount = _missedHighlightFavouriteDiscussionsCount = 0;
     _missedDirectDiscussionsCount = _missedHighlightDirectDiscussionsCount = 0;
     _missedGroupDiscussionsCount = _missedHighlightGroupDiscussionsCount = 0;
 
-    directorySection = favoritesSection = peopleSection = conversationSection = lowPrioritySection = invitesSection = -1;
+    directorySection = favoritesSection = peopleSection = conversationSection = lowPrioritySection = serverNoticeSection = invitesSection = -1;
 
     if (displayedRecentsDataSourceArray.count > 0)
     {
@@ -1077,7 +1126,11 @@ - (void)refreshRoomsSections
 
             if (_recentsDataSourceMode == RecentsDataSourceModeHome)
             {
-                if (room.accountData.tags[kMXRoomTagFavourite])
+                if (room.accountData.tags[kMXRoomTagServerNotice])
+                {
+                    [serverNoticeCellDataArray addObject:recentCellDataStoring];
+                }
+                else if (room.accountData.tags[kMXRoomTagFavourite])
                 {
                     [favoriteCellDataArray addObject:recentCellDataStoring];
                 }
@@ -1288,6 +1341,7 @@ - (void)refreshRoomsSections
                 [peopleCellDataArray sortUsingComparator:comparator];
                 [conversationCellDataArray sortUsingComparator:comparator];
                 [lowPriorityCellDataArray sortUsingComparator:comparator];
+                [serverNoticeCellDataArray sortUsingComparator:comparator];
             }
         }
         else if (favoriteCellDataArray.count > 0 && _recentsDataSourceMode == RecentsDataSourceModeFavourites)
@@ -1421,8 +1475,8 @@ - (BOOL)isDraggableCellAt:(NSIndexPath*)path
     {
         return NO;
     }
-    
-    return (path && ((path.section == favoritesSection) || (path.section == peopleSection) || (path.section == lowPrioritySection) || (path.section == conversationSection)));
+
+    return (path && ((path.section == favoritesSection) || (path.section == peopleSection) || (path.section == lowPrioritySection) || (path.section == serverNoticeSection) || (path.section == conversationSection)));
 }
 
 - (BOOL)canCellMoveFrom:(NSIndexPath*)oldPath to:(NSIndexPath*)newPath
@@ -1451,6 +1505,10 @@ - (NSString*)roomTagAt:(NSIndexPath*)path
     {
         return kMXRoomTagLowPriority;
     }
+    else if (path.section == serverNoticeSection)
+    {
+        return kMXRoomTagServerNotice;
+    }
 
     return nil;
 }

Riot/Modules/GlobalSearch/DataSources/UnifiedSearchRecentsDataSource.m

@@ -89,7 +89,7 @@ - (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
 
         if (_hideRecents)
         {
-            self.invitesSection = self.favoritesSection = self.peopleSection = self.conversationSection = self.lowPrioritySection = -1;
+            self.invitesSection = self.favoritesSection = self.peopleSection = self.conversationSection = self.lowPrioritySection = self.serverNoticeSection = -1;
             sectionsCount = sectionsOffset;
         }
         else
@@ -114,6 +114,10 @@ - (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
             {
                 self.lowPrioritySection += sectionsOffset;
             }
+            if (self.serverNoticeSection != -1)
+            {
+                self.serverNoticeSection += sectionsOffset;
+            }
             sectionsCount += sectionsOffset;
         }
     }