element-ios/Riot/Model/Room/RoomDataSource.m
2017-03-09 11:50:12 +01:00

306 lines
14 KiB
Objective-C

/*
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 "RoomDataSource.h"
#import "EventFormatter.h"
#import "RoomBubbleCellData.h"
#import "MXKRoomBubbleTableViewCell+Riot.h"
#import "AvatarGenerator.h"
#import "MXRoom+Riot.h"
@implementation RoomDataSource
- (instancetype)initWithRoomId:(NSString *)roomId andMatrixSession:(MXSession *)matrixSession
{
self = [super initWithRoomId:roomId andMatrixSession:matrixSession];
if (self)
{
// Replace default Cell data class
[self registerCellDataClass:RoomBubbleCellData.class forCellIdentifier:kMXKRoomBubbleCellDataIdentifier];
// Replace event formatter
self.eventFormatter = [[EventFormatter alloc] initWithMatrixSession:self.mxSession];
self.eventFormatter.treatMatrixUserIdAsLink = YES;
self.eventFormatter.treatMatrixRoomIdAsLink = YES;
self.eventFormatter.treatMatrixRoomAliasAsLink = YES;
// Handle timestamp and read receips display at Vector app level (see [tableView: cellForRowAtIndexPath:])
self.useCustomDateTimeLabel = YES;
self.useCustomReceipts = YES;
self.useCustomUnsentButton = YES;
// TODO custom here self.eventsFilterForMessages according to Vector requirements
// Set bubble pagination
self.bubblesPagination = MXKRoomDataSourceBubblesPaginationPerDay;
}
return self;
}
// Ignore regular notification count if the room is in 'mentions only" mode
- (NSUInteger)notificationCount
{
if (self.room.isMentionsOnly)
{
// Only the highlighted missed messages are counted
return super.highlightCount;
}
return super.notificationCount;
}
- (void)didReceiveReceiptEvent:(MXEvent *)receiptEvent roomState:(MXRoomState *)roomState
{
// Override this callback to force rendering of each cell with read receipts information.
@synchronized(bubbles)
{
for (RoomBubbleCellData *cellData in bubbles)
{
cellData.hasReadReceipts = NO;
}
}
NSArray *readEventIds = receiptEvent.readReceiptEventIds;
for (NSString* eventId in readEventIds)
{
RoomBubbleCellData *cellData = [self cellDataOfEventWithEventId:eventId];
cellData.hasReadReceipts = YES;
}
// Let super handle this receipt
[super didReceiveReceiptEvent:receiptEvent roomState:roomState];
}
#pragma mark -
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
NSInteger count = [super tableView:tableView numberOfRowsInSection:section];
if (count)
{
// Look for the cell data which contains the last message.
// Reset first the flag in each cell data
@synchronized(bubbles)
{
for (RoomBubbleCellData *cellData in bubbles)
{
cellData.containsLastMessage = NO;
}
}
// Set the flag in the right cell data
MXEvent *lastMessage = self.lastMessage;
if (lastMessage.eventId)
{
RoomBubbleCellData *cellData = [self cellDataOfEventWithEventId:lastMessage.eventId];
cellData.containsLastMessage = YES;
}
}
return count;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
UITableViewCell *cell = [super tableView:tableView cellForRowAtIndexPath:indexPath];
// Finalize cell view customization here
if ([cell isKindOfClass:MXKRoomBubbleTableViewCell.class])
{
MXKRoomBubbleTableViewCell *bubbleCell = (MXKRoomBubbleTableViewCell*)cell;
RoomBubbleCellData *cellData = (RoomBubbleCellData*)bubbleCell.bubbleData;
// Display timestamp of the last message
if (cellData.containsLastMessage)
{
[bubbleCell addTimestampLabelForComponent:cellData.mostRecentComponentIndex];
}
// Handle read receipts display.
if (cellData.hasReadReceipts && self.showBubbleReceipts)
{
// Read receipts container are inserted here on the right side into the overlay container.
// Some vertical whitespaces are added in message text view (see RoomBubbleCellData class) to insert correctly multiple receipts.
bubbleCell.bubbleOverlayContainer.backgroundColor = [UIColor clearColor];
bubbleCell.bubbleOverlayContainer.alpha = 1;
bubbleCell.bubbleOverlayContainer.userInteractionEnabled = NO;
bubbleCell.bubbleOverlayContainer.hidden = NO;
NSArray *bubbleComponents = cellData.bubbleComponents;
NSInteger index = bubbleComponents.count;
CGFloat bottomPositionY = bubbleCell.frame.size.height;
while (index--)
{
MXKRoomBubbleComponent *component = bubbleComponents[index];
if (component.event.sentState != MXEventSentStateFailed)
{
// Get the events receipts by ignoring the current user receipt.
NSArray* receipts = [self.room getEventReceipts:component.event.eventId sorted:YES];
NSMutableArray *roomMembers;
NSMutableArray *placeholders;
// Check whether some receipts are found
if (receipts.count)
{
// Retrieve the corresponding room members
roomMembers = [[NSMutableArray alloc] initWithCapacity:receipts.count];
placeholders = [[NSMutableArray alloc] initWithCapacity:receipts.count];
for (MXReceiptData* data in receipts)
{
MXRoomMember * roomMember = [self.room.state memberWithUserId:data.userId];
if (roomMember)
{
[roomMembers addObject:roomMember];
[placeholders addObject:[AvatarGenerator generateAvatarForMatrixItem:roomMember.userId withDisplayName:roomMember.displayname]];
}
}
}
// Check whether some receipts are found
if (roomMembers.count)
{
// Define the read receipts container, positioned on the right border of the bubble cell (Note the right margin 6 pts).
MXKReceiptSendersContainer* avatarsContainer = [[MXKReceiptSendersContainer alloc] initWithFrame:CGRectMake(bubbleCell.frame.size.width - 156, bottomPositionY - 13, 150, 12) andRestClient:self.mxSession.matrixRestClient];
// Custom avatar display
avatarsContainer.maxDisplayedAvatars = 5;
avatarsContainer.avatarMargin = 6;
// Set the container tag to be able to retrieve read receipts container from component index (see component selection in MXKRoomBubbleTableViewCell (Vector) category).
avatarsContainer.tag = index;
[avatarsContainer refreshReceiptSenders:roomMembers withPlaceHolders:placeholders andAlignment:ReadReceiptAlignmentRight];
avatarsContainer.translatesAutoresizingMaskIntoConstraints = NO;
avatarsContainer.accessibilityIdentifier = @"readReceiptsContainer";
[bubbleCell.bubbleOverlayContainer addSubview:avatarsContainer];
// Force receipts container size
NSLayoutConstraint *widthConstraint = [NSLayoutConstraint constraintWithItem:avatarsContainer
attribute:NSLayoutAttributeWidth
relatedBy:NSLayoutRelationEqual
toItem:nil
attribute:NSLayoutAttributeNotAnAttribute
multiplier:1.0
constant:150];
NSLayoutConstraint *heightConstraint = [NSLayoutConstraint constraintWithItem:avatarsContainer
attribute:NSLayoutAttributeHeight
relatedBy:NSLayoutRelationEqual
toItem:nil
attribute:NSLayoutAttributeNotAnAttribute
multiplier:1.0
constant:12];
// Force receipts container position
NSLayoutConstraint *trailingConstraint = [NSLayoutConstraint constraintWithItem:avatarsContainer
attribute:NSLayoutAttributeTrailing
relatedBy:NSLayoutRelationEqual
toItem:bubbleCell.bubbleOverlayContainer
attribute:NSLayoutAttributeTrailing
multiplier:1.0
constant:-6];
NSLayoutConstraint *topConstraint = [NSLayoutConstraint constraintWithItem:avatarsContainer
attribute:NSLayoutAttributeTop
relatedBy:NSLayoutRelationEqual
toItem:bubbleCell.bubbleOverlayContainer
attribute:NSLayoutAttributeTop
multiplier:1.0
constant:bottomPositionY - 13];
// Available on iOS 8 and later
[NSLayoutConstraint activateConstraints:@[widthConstraint, heightConstraint, topConstraint, trailingConstraint]];
}
}
// Prepare the bottom position for the next read receipt container (if any)
bottomPositionY = bubbleCell.msgTextViewTopConstraint.constant + component.position.y;
}
}
// Check whether an event is currently selected: the other messages are then blurred
if (_selectedEventId)
{
// Check whether the selected event belongs to this bubble
NSInteger selectedComponentIndex = cellData.selectedComponentIndex;
if (selectedComponentIndex != NSNotFound)
{
[bubbleCell selectComponent:cellData.selectedComponentIndex];
}
else
{
bubbleCell.blurred = YES;
}
}
// Reset the marker if any
if (bubbleCell.markerView)
{
[bubbleCell.markerView removeFromSuperview];
}
// Manage initial event (case of permalink or search result)
if (self.timeline.initialEventId)
{
NSArray *bubbleComponents = cellData.bubbleComponents;
// Check if the cell contains this initial event
for (NSUInteger index = 0; index < bubbleComponents.count; index++)
{
MXKRoomBubbleComponent *component = bubbleComponents[index];
if ([component.event.eventId isEqualToString:self.timeline.initialEventId])
{
// If yes, mark the event
[bubbleCell markComponent:index];
break;
}
}
}
}
return cell;
}
#pragma mark -
- (void)setSelectedEventId:(NSString *)selectedEventId
{
// Cancel the current selection (if any)
if (_selectedEventId)
{
RoomBubbleCellData *cellData = [self cellDataOfEventWithEventId:_selectedEventId];
cellData.selectedEventId = nil;
}
if (selectedEventId.length)
{
RoomBubbleCellData *cellData = [self cellDataOfEventWithEventId:selectedEventId];
cellData.selectedEventId = selectedEventId;
}
_selectedEventId = selectedEventId;
}
@end