New Chat screens: implement participants selections.

Vector/ViewController/RoomCreationStep2ViewController.m

@@ -27,13 +27,15 @@
     UIButton *createButton;
     MXHTTPOperation *roomCreationRequest;
     
-    // Add participant
-    NSInteger addParticipantSection;
-    UISearchBar *participantsSearchBar;
+    // Add participants
+    NSInteger addParticipantsSection;
+    UISearchBar *addParticipantsSearchBar;
+    NSString *addParticipantsSearchText;
     NSMutableArray *filteredParticipants;
     
     // Participants
     NSInteger participantsSection;
+    NSMutableDictionary *participantsByIds;
 }
 
 @end
@@ -65,8 +67,9 @@
 - (void)destroy
 {
     createButton = nil;
-    participantsSearchBar = nil;
+    addParticipantsSearchBar = nil;
     filteredParticipants = nil;
+    participantsByIds = nil;
     
     [super destroy];
 }
@@ -153,10 +156,10 @@
 - (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
 {
     NSInteger count = 0;
-    createButtonSection = addParticipantSection = participantsSection = -1;
+    createButtonSection = addParticipantsSection = participantsSection = -1;
     
     createButtonSection = count++;
-    addParticipantSection = count++;
+    addParticipantsSection = count++;
     participantsSection = count++;
     
     return count;
@@ -169,13 +172,17 @@
     {
         count = 1;
     }
-    else if (section == addParticipantSection)
+    else if (section == addParticipantsSection)
     {
         count = 1 + filteredParticipants.count;
     }
     else if (section == participantsSection)
     {
         count = _roomCreationInputs.roomParticipants.count;
+        if (_roomCreationInputs.mxSession)
+        {
+            count++;
+        }
     }
     
     return count;
@@ -183,7 +190,7 @@
 
 - (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section
 {
-    if (section == addParticipantSection)
+    if (section == addParticipantsSection)
     {
         return NSLocalizedStringFromTable(@"room_creation_add_participants", @"Vector", nil);
     }
@@ -216,14 +223,123 @@
         
         cell = createButtonCell;
     }
-    else if (indexPath.section == addParticipantSection)
+    else if (indexPath.section == addParticipantsSection)
     {
-        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:@"roomPictureCell"];
-        cell.textLabel.text = @"todo";
+        if (indexPath.row == 0)
+        {
+            MXKTableViewCellWithSearchBar *addParticipantsSearchCell = [tableView dequeueReusableCellWithIdentifier:[MXKTableViewCellWithSearchBar defaultReuseIdentifier]];
+            if (!addParticipantsSearchCell)
+            {
+                addParticipantsSearchCell = [[MXKTableViewCellWithSearchBar alloc] init];
+            }
+            
+            addParticipantsSearchBar = addParticipantsSearchCell.mxkSearchBar;
+            addParticipantsSearchBar.backgroundColor = [UIColor clearColor];
+            addParticipantsSearchBar.text = addParticipantsSearchText;
+            addParticipantsSearchBar.returnKeyType = UIReturnKeyDone;
+            addParticipantsSearchBar.delegate = self;
+            if (addParticipantsSearchText.length)
+            {
+                [addParticipantsSearchBar becomeFirstResponder];
+            }
+            
+            cell = addParticipantsSearchCell;
+        }
+        else
+        {
+            NSInteger index = indexPath.row - 1;
+            if (index < filteredParticipants.count)
+            {
+                MXKContactTableCell* filteredParticipantCell = [tableView dequeueReusableCellWithIdentifier:[MXKContactTableCell defaultReuseIdentifier]];
+                if (!filteredParticipantCell)
+                {
+                    filteredParticipantCell = [[MXKContactTableCell alloc] init];
+                }
+                
+                [filteredParticipantCell render:filteredParticipants[index]];
+                
+                // Trick, the 'add' icon is displayed here by using the matrixUserIconview which is visible for matrix contact only.
+                filteredParticipantCell.matrixUserIconViewHeightConstraint.constant = 30;
+                filteredParticipantCell.matrixUserIconView.image = [UIImage imageNamed:@"add"];
+                filteredParticipantCell.selectionStyle = UITableViewCellSelectionStyleDefault;
+                
+                cell = filteredParticipantCell;
+            }
+        }
     }
     else if (indexPath.section == participantsSection)
     {
-        //TODO
+        MXKContactTableCell *participantCell = [tableView dequeueReusableCellWithIdentifier:[MXKContactTableCell defaultReuseIdentifier]];
+        if (!participantCell)
+        {
+            participantCell = [[MXKContactTableCell alloc] init];
+        }
+        
+        if (_roomCreationInputs.mxSession && indexPath.row == 0)
+        {
+           MXKContact *contact = [[MXKContact alloc] initMatrixContactWithDisplayName:NSLocalizedStringFromTable(@"you", @"Vector", nil) andMatrixID:_roomCreationInputs.mxSession.myUser.userId];
+            
+            [participantCell render:contact];
+            
+            // Trick, remove matrixUserIconview image to hide it.
+            participantCell.matrixUserIconView.image = nil;
+            participantCell.selectionStyle = UITableViewCellSelectionStyleNone;
+        }
+        else
+        {
+            NSInteger index = indexPath.row;
+            NSArray *participants = _roomCreationInputs.roomParticipants;
+            
+            if (_roomCreationInputs.mxSession)
+            {
+                index --;
+            }
+            
+            if (index < participants.count)
+            {
+                NSString *userId = participants[index];
+                MXKContact *contact = [participantsByIds objectForKey:userId];
+                // Note: contact may be nil here if the participant has not been added into _roomCreationInputs by self.
+                if (!contact)
+                {
+                    // Create this missing contact
+                    // Look for the correpsonding MXUser
+                    NSArray *sessions = self.mxSessions;
+                    MXUser *mxUser;
+                    for (MXSession *session in sessions)
+                    {
+                        mxUser = [session userWithUserId:userId];
+                        if (mxUser)
+                        {
+                            contact = [[MXKContact alloc] initMatrixContactWithDisplayName:((mxUser.displayname.length > 0) ? mxUser.displayname : userId) andMatrixID:userId];
+                            break;
+                        }
+                    }
+                    
+                    if (contact)
+                    {
+                        if (!participantsByIds)
+                        {
+                            participantsByIds = [NSMutableDictionary dictionary];
+                        }
+                        [participantsByIds setObject:contact forKey:userId];
+                    }
+                    
+                }
+                
+                if (contact)
+                {
+                    [participantCell render:contact];
+                }
+                
+                // Trick, the 'remove' icon is displayed here by using the matrixUserIconview which is visible for matrix contact only.
+                participantCell.matrixUserIconViewHeightConstraint.constant = 30;
+                participantCell.matrixUserIconView.image = [UIImage imageNamed:@"remove"];
+                participantCell.selectionStyle = UITableViewCellSelectionStyleDefault;
+            }
+        }
+        
+        cell = participantCell;
     }
     
     return cell;
@@ -246,6 +362,17 @@
     return 30;
 }
 
+- (void)tableView:(UITableView *)tableView willDisplayHeaderView:(UIView *)view forSection:(NSInteger)section
+{
+    if([view isKindOfClass:[UITableViewHeaderFooterView class]])
+    {
+        UITableViewHeaderFooterView *tableViewHeaderFooterView = (UITableViewHeaderFooterView *) view;
+        tableViewHeaderFooterView.textLabel.text = [tableViewHeaderFooterView.textLabel.text capitalizedString];
+        tableViewHeaderFooterView.textLabel.font = [UIFont boldSystemFontOfSize:17];
+        tableViewHeaderFooterView.textLabel.textColor = [UIColor blackColor];
+    }
+}
+
 //- (CGFloat) tableView:(UITableView *)tableView heightForFooterInSection:(NSInteger)section
 //{
 //    return 1;
@@ -253,9 +380,162 @@
 
 - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
 {
-    // TODO
+    if (indexPath.section == addParticipantsSection && indexPath.row)
+    {
+        NSInteger index = indexPath.row - 1;
+        if (index < filteredParticipants.count)
+        {
+            MXKContact *contact = filteredParticipants[index];
+            
+            NSArray *identifiers = contact.matrixIdentifiers;
+            if (identifiers.count)
+            {
+                [_roomCreationInputs addParticipant:identifiers.firstObject];
+                
+                // Handle a mapping contact by userId for selected participants
+                if (!participantsByIds)
+                {
+                    participantsByIds = [NSMutableDictionary dictionary];
+                }
+                [participantsByIds setObject:contact forKey:identifiers.firstObject];
+            }
+            
+            [filteredParticipants removeObjectAtIndex:index];
+            
+            // Refresh display
+            NSIndexSet *indexSet = [NSIndexSet indexSetWithIndexesInRange:NSMakeRange (addParticipantsSection, 2)];
+            [self.tableView reloadSections:indexSet withRowAnimation:UITableViewRowAnimationNone];
+        }
+    }
+    else if (indexPath.section == participantsSection)
+    {
+        NSInteger index = indexPath.row;
+        
+        if (_roomCreationInputs.mxSession)
+        {
+            index --;
+        }
+        
+        NSArray *participants = _roomCreationInputs.roomParticipants;
+        if (index < participants.count)
+        {
+            NSInteger firstSectionToRefresh = participantsSection;
+            
+            [_roomCreationInputs removeParticipant:participants[index]];
+            
+            // Check whether this removed participant must be added to the search result if any
+            MXKContact *contact = [participantsByIds objectForKey:participants[index]];
+            if (contact && addParticipantsSearchText.length && [contact matchedWithPatterns:@[addParticipantsSearchText]])
+            {
+                [filteredParticipants addObject:contact];
+                firstSectionToRefresh = addParticipantsSection;
+            }
+            [participantsByIds removeObjectForKey:participants[index]];
+            
+            // Refresh display
+            NSIndexSet *indexSet = [NSIndexSet indexSetWithIndexesInRange:NSMakeRange (firstSectionToRefresh, 2)];
+            [self.tableView reloadSections:indexSet withRowAnimation:UITableViewRowAnimationNone];
+        }
+    }
     [tableView deselectRowAtIndexPath:indexPath animated:YES];
+}
+
+#pragma mark - UISearchBar delegate
+
+- (void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText
+{
+    NSInteger previousFilteredCount = filteredParticipants.count;
     
+    NSMutableArray *mxUsers;
+    if (addParticipantsSearchText.length && [searchText hasPrefix:addParticipantsSearchText])
+    {
+        mxUsers = filteredParticipants;
+    }
+    else
+    {
+        // Retrieve all known matrix users
+        NSArray *matrixContacts = [NSMutableArray arrayWithArray:[MXKContactManager sharedManager].matrixContacts];
+        mxUsers = [NSMutableArray arrayWithCapacity:matrixContacts.count];
+        
+        // Split contacts with several ids, and remove the current participants.
+        NSArray *participants = _roomCreationInputs.roomParticipants;
+        for (MXKContact* contact in matrixContacts)
+        {
+            NSArray *identifiers = contact.matrixIdentifiers;
+            if (identifiers.count > 1)
+            {
+                for (NSString *userId in identifiers)
+                {
+                    if (!participants || [participants indexOfObject:userId] == NSNotFound)
+                    {
+                        if (![userId isEqualToString:_roomCreationInputs.mxSession.myUser.userId])
+                        {
+                            MXKContact *splitContact = [[MXKContact alloc] initMatrixContactWithDisplayName:contact.displayName andMatrixID:userId];
+                            [mxUsers addObject:splitContact];
+                        }
+                    }
+                }
+            }
+            else if (identifiers.count)
+            {
+                NSString *userId = identifiers.firstObject;
+                if (!participants || [participants indexOfObject:userId] == NSNotFound)
+                {
+                    if (![userId isEqualToString:_roomCreationInputs.mxSession.myUser.userId])
+                    {
+                        [mxUsers addObject:contact];
+                    }
+                }
+            }
+        }
+    }
+    addParticipantsSearchText = searchText;
+    
+    filteredParticipants = [NSMutableArray array];
+    
+    for (MXKContact* contact in mxUsers)
+    {
+        if ([contact matchedWithPatterns:@[addParticipantsSearchText]])
+        {
+            [filteredParticipants addObject:contact];
+        }
+    }
+    
+    if (previousFilteredCount || filteredParticipants.count)
+    {
+        NSIndexSet *indexSet = [NSIndexSet indexSetWithIndexesInRange:NSMakeRange (addParticipantsSection, 1)];
+        [self.tableView reloadSections:indexSet withRowAnimation:UITableViewRowAnimationNone];
+    }
+}
+
+- (BOOL)searchBarShouldBeginEditing:(UISearchBar *)searchBar
+{
+    searchBar.showsCancelButton = YES;
+    return YES;
+}
+
+- (BOOL)searchBarShouldEndEditing:(UISearchBar *)searchBar
+{
+    searchBar.showsCancelButton = NO;
+    return YES;
+}
+
+- (void)searchBarSearchButtonClicked:(UISearchBar *)searchBar
+{
+    // "Done" key has been pressed
+    [searchBar resignFirstResponder];
+}
+
+- (void)searchBarCancelButtonClicked:(UISearchBar *)searchBar
+{
+    // Leave search
+    [searchBar resignFirstResponder];
+    addParticipantsSearchBar = nil;
+    addParticipantsSearchText = nil;
+    filteredParticipants = nil;
+    
+    NSIndexSet *indexSet = [NSIndexSet indexSetWithIndexesInRange:NSMakeRange (addParticipantsSection, 1)];
+    [self.tableView reloadSections:indexSet withRowAnimation:UITableViewRowAnimationNone];
 }
 
 @end