linphone-ios/Classes/ChatConversationView.m

/* ChatRoomViewController.m
 *
 * Copyright (C) 2012  Belledonne Comunications, Grenoble, France
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 */

#import "ChatConversationView.h"
#import "PhoneMainView.h"
#import "Utils.h"
#import "FileTransferDelegate.h"
#import "UIChatBubbleTextCell.h"

@implementation ChatConversationView

#pragma mark - Lifecycle Functions

- (id)init {
	self = [super initWithNibName:NSStringFromClass(self.class) bundle:[NSBundle mainBundle]];
	if (self != nil) {
		scrollOnGrowingEnabled = TRUE;
		chatRoom = NULL;
		imageQualities = [[OrderedDictionary alloc]
			initWithObjectsAndKeys:[NSNumber numberWithFloat:0.9], NSLocalizedString(@"Maximum", nil),
								   [NSNumber numberWithFloat:0.5], NSLocalizedString(@"Average", nil),
								   [NSNumber numberWithFloat:0.0], NSLocalizedString(@"Minimum", nil), nil];
		composingVisible = TRUE;
	}
	return self;
}

- (void)dealloc {
	[[NSNotificationCenter defaultCenter] removeObserver:self];
}

#pragma mark - UICompositeViewDelegate Functions

static UICompositeViewDescription *compositeDescription = nil;

+ (UICompositeViewDescription *)compositeViewDescription {
	if (compositeDescription == nil) {
		compositeDescription = [[UICompositeViewDescription alloc] init:self.class
															  statusBar:StatusBarView.class
																 tabBar:TabBarView.class
															   sideMenu:SideMenuView.class
															 fullscreen:false
														  landscapeMode:false
														   portraitMode:true];
	}
	return compositeDescription;
}

- (UICompositeViewDescription *)compositeViewDescription {
	return self.class.compositeViewDescription;
}

#pragma mark - ViewController Functions

- (void)viewDidLoad {
	[super viewDidLoad];

	_messageField.minNumberOfLines = 1;
	_messageField.maxNumberOfLines = ([LinphoneManager runningOnIpad]) ? 10 : 3;
	_messageField.delegate = self;
	_messageField.font = [UIFont systemFontOfSize:18.0f];
	_messageField.contentInset = UIEdgeInsetsMake(0, -5, -2, -5);
	_messageField.internalTextView.scrollIndicatorInsets = UIEdgeInsetsMake(0, 0, 0, 10);

	[_tableController setChatRoomDelegate:self];
}

- (void)viewWillAppear:(BOOL)animated {
	[super viewWillAppear:animated];
	[[NSNotificationCenter defaultCenter] addObserver:self
											 selector:@selector(applicationWillEnterForeground:)
												 name:UIApplicationDidBecomeActiveNotification
											   object:nil];
	[[NSNotificationCenter defaultCenter] addObserver:self
											 selector:@selector(keyboardWillShow:)
												 name:UIKeyboardWillShowNotification
											   object:nil];
	[[NSNotificationCenter defaultCenter] addObserver:self
											 selector:@selector(keyboardWillHide:)
												 name:UIKeyboardWillHideNotification
											   object:nil];
	[[NSNotificationCenter defaultCenter] addObserver:self
											 selector:@selector(textReceivedEvent:)
												 name:kLinphoneMessageReceived
											   object:nil];
	[[NSNotificationCenter defaultCenter] addObserver:self
											 selector:@selector(onMessageChange:)
												 name:UITextViewTextDidChangeNotification
											   object:nil];
	[[NSNotificationCenter defaultCenter] addObserver:self
											 selector:@selector(textComposeEvent:)
												 name:kLinphoneTextComposeEvent
											   object:nil];
	[[NSNotificationCenter defaultCenter] addObserver:self
											 selector:@selector(callUpdateEvent:)
												 name:kLinphoneCallUpdate
											   object:nil];

	if (_tableController.isEditing) {
		[_tableController setEditing:NO];
	}
	[[_tableController tableView] reloadData];

	BOOL fileSharingEnabled = linphone_core_get_file_transfer_server([LinphoneManager getLc]) != NULL;
	[_pictureButton setEnabled:fileSharingEnabled];

	[self callUpdateEvent:nil];
	[_backToCallButton update];
}

- (void)viewWillDisappear:(BOOL)animated {
	[super viewWillDisappear:animated];

	[_messageField resignFirstResponder];

	[self setComposingVisible:FALSE withDelay:0]; // will hide the "user is composing.." message

	[[NSNotificationCenter defaultCenter] removeObserver:self];
}

- (void)didRotateFromInterfaceOrientation:(UIInterfaceOrientation)fromInterfaceOrientation {
	[super didRotateFromInterfaceOrientation:fromInterfaceOrientation];
	[_tableController scrollToBottom:true];
}

- (void)willAnimateRotationToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation
										 duration:(NSTimeInterval)duration {
	[super willAnimateRotationToInterfaceOrientation:toInterfaceOrientation duration:duration];
}

- (void)didReceiveMemoryWarning {
	[super didReceiveMemoryWarning];
}

#pragma mark -

- (void)setChatRoom:(LinphoneChatRoom *)room {
	chatRoom = room;
	[_messageField setText:@""];
	[_tableController setChatRoom:room];

	if (chatRoom != NULL) {
		_chatView.hidden = NO;
		[self update];
		linphone_chat_room_mark_as_read(chatRoom);
		[self setComposingVisible:linphone_chat_room_is_remote_composing(chatRoom) withDelay:0];
		[[NSNotificationCenter defaultCenter] postNotificationName:kLinphoneMessageReceived object:self];
	} else {
		_chatView.hidden = YES;
	}
}

- (void)applicationWillEnterForeground:(NSNotification *)notif {
	if (chatRoom != nil) {
		linphone_chat_room_mark_as_read(chatRoom);
		[[NSNotificationCenter defaultCenter] postNotificationName:kLinphoneMessageReceived object:self];
	}
}

- (void)callUpdateEvent:(NSNotification *)notif {
	_callButton.hidden = (linphone_core_get_current_call([LinphoneManager getLc]) != NULL);
}

- (void)update {
	if (chatRoom == NULL) {
		LOGW(@"Cannot update chat room header: null contact");
		return;
	}

	const LinphoneAddress *addr = linphone_chat_room_get_peer_address(chatRoom);
	if (addr == NULL) {
		[PhoneMainView.instance popCurrentView];
		UIAlertView *error = [[UIAlertView alloc]
				initWithTitle:NSLocalizedString(@"Invalid SIP address", nil)
					  message:NSLocalizedString(@"Either configure a SIP proxy server from settings prior to send a "
												@"message or use a valid SIP address (I.E sip:john@example.net)",
												nil)
					 delegate:nil
			cancelButtonTitle:NSLocalizedString(@"Continue", nil)
			otherButtonTitles:nil];
		[error show];
		return;
	}
	[ContactDisplay setDisplayNameLabel:_addressLabel forAddress:addr];
	_addressLabel.accessibilityValue = _addressLabel.text;
}

- (BOOL)sendMessage:(NSString *)message withExterlBodyUrl:(NSURL *)externalUrl withInternalURL:(NSURL *)internalUrl {
	if (chatRoom == NULL) {
		LOGW(@"Cannot send message: No chatroom");
		return FALSE;
	}

	LinphoneChatMessage *msg = linphone_chat_room_create_message(chatRoom, [message UTF8String]);
	if (externalUrl) {
		linphone_chat_message_set_external_body_url(msg, [[externalUrl absoluteString] UTF8String]);
	}

	if (internalUrl) {
		// internal url is saved in the appdata for display and later save
		[LinphoneManager setValueInMessageAppData:[internalUrl absoluteString] forKey:@"localimage" inMessage:msg];
	}

	linphone_chat_room_send_chat_message(chatRoom, msg);
	[_tableController addChatEntry:msg];
	[_tableController scrollToBottom:true];

	return TRUE;
}

- (void)saveAndSend:(UIImage *)image url:(NSURL *)url {
	// photo from Camera, must be saved first
	if (url == nil) {
		[[LinphoneManager instance]
				.photoLibrary
			writeImageToSavedPhotosAlbum:image.CGImage
							 orientation:(ALAssetOrientation)[image imageOrientation]
						 completionBlock:^(NSURL *assetURL, NSError *error) {
						   if (error) {
							   LOGE(@"Cannot save image data downloaded [%@]", [error localizedDescription]);

							   UIAlertView *errorAlert = [[UIAlertView alloc]
									   initWithTitle:NSLocalizedString(@"Transfer error", nil)
											 message:NSLocalizedString(@"Cannot write image to photo library", nil)
											delegate:nil
								   cancelButtonTitle:NSLocalizedString(@"Ok", nil)
								   otherButtonTitles:nil, nil];
							   [errorAlert show];
						   } else {
							   LOGI(@"Image saved to [%@]", [assetURL absoluteString]);
							   [self startImageUpload:image url:assetURL];
						   }
						 }];
	} else {
		[self startImageUpload:image url:url];
	}
}

- (void)chooseImageQuality:(UIImage *)image url:(NSURL *)url {
	DTActionSheet *sheet = [[DTActionSheet alloc] initWithTitle:NSLocalizedString(@"Choose the image size", nil)];
	dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
	  for (NSString *key in [imageQualities allKeys]) {
		  NSNumber *number = [imageQualities objectForKey:key];
		  NSData *data = UIImageJPEGRepresentation(image, [number floatValue]);
		  NSNumber *size = [NSNumber numberWithInteger:[data length]];

		  NSString *text = [NSString stringWithFormat:@"%@ (%@)", key, [size toHumanReadableSize]];
		  [sheet addButtonWithTitle:text
							  block:^() {
								[self saveAndSend:[UIImage imageWithData:data] url:url];
							  }];
	  }
	  [sheet addCancelButtonWithTitle:NSLocalizedString(@"Cancel", nil) block:nil];
	  dispatch_async(dispatch_get_main_queue(), ^{
		[sheet showInView:PhoneMainView.instance.view];
	  });
	});
}

- (void)setComposingVisible:(BOOL)visible withDelay:(CGFloat)delay {

	if (composingVisible == visible)
		return;

	CGRect keyboardFrame = [_messageView frame];
	CGRect newComposingFrame = [_composeIndicatorView frame];
	CGRect newTableFrame = [_tableController.tableView frame];

	if (visible) {
		_composeLabel.text =
			[NSString stringWithFormat:NSLocalizedString(@"%@ is composing...", nil), _addressLabel.text];
		// pull up the composing frame and shrink the table view

		newTableFrame.size.height -= newComposingFrame.size.height;
		newComposingFrame.origin.y = keyboardFrame.origin.y - newComposingFrame.size.height;
	} else {
		// pull down the composing frame and widen the tableview
		newTableFrame.size.height += newComposingFrame.size.height;
		newComposingFrame.origin.y = keyboardFrame.origin.y;
	}
	composingVisible = visible;
	[UIView animateWithDuration:delay
		animations:^{
		  _tableController.tableView.frame = newTableFrame;
		  _composeIndicatorView.frame = newComposingFrame;
		}
		completion:^(BOOL finished) {
		  [_tableController scrollToBottom:TRUE];
		}];
}

#pragma mark - Event Functions

- (void)textReceivedEvent:(NSNotification *)notif {
	LinphoneAddress *from = [[[notif userInfo] objectForKey:@"from_address"] pointerValue];
	LinphoneChatRoom *room = [[notif.userInfo objectForKey:@"room"] pointerValue];
	LinphoneChatMessage *chat = [[notif.userInfo objectForKey:@"message"] pointerValue];

	if (from == NULL || chat == NULL) {
		return;
	}
	char *fromStr = linphone_address_as_string_uri_only(from);
	const LinphoneAddress *cr_from = linphone_chat_room_get_peer_address(chatRoom);
	char *cr_from_string = linphone_address_as_string_uri_only(cr_from);

	if (fromStr && cr_from_string) {

		if (strcasecmp(cr_from_string, fromStr) == 0) {
			if ([UIApplication sharedApplication].applicationState != UIApplicationStateBackground) {
				linphone_chat_room_mark_as_read(room);
				[[NSNotificationCenter defaultCenter] postNotificationName:kLinphoneMessageReceived object:self];
			}
			[_tableController addChatEntry:chat];
			[_tableController scrollToLastUnread:TRUE];
		}
	}
	ms_free(fromStr);
	ms_free(cr_from_string);
}

- (void)textComposeEvent:(NSNotification *)notif {
	LinphoneChatRoom *room = [[[notif userInfo] objectForKey:@"room"] pointerValue];
	if (room && room == chatRoom) {
		BOOL composing = linphone_chat_room_is_remote_composing(room);
		[self setComposingVisible:composing withDelay:0.3];
	}
}

#pragma mark - UITextFieldDelegate Functions

- (BOOL)growingTextViewShouldBeginEditing:(HPGrowingTextView *)growingTextView {
	if (_tableController.isEditing) {
		[_tableController setEditing:NO];
	}
	[_listTapGestureRecognizer setEnabled:TRUE];
	return TRUE;
}

- (BOOL)growingTextViewShouldEndEditing:(HPGrowingTextView *)growingTextView {
	[_listTapGestureRecognizer setEnabled:FALSE];
	return TRUE;
}

- (void)growingTextChanged:(HPGrowingTextView *)growingTextView text:(NSString *)text {
	if ([text length] > 0 && chatRoom)
		linphone_chat_room_compose(chatRoom);
}

- (void)growingTextView:(HPGrowingTextView *)growingTextView willChangeHeight:(float)height {
	int diff = height - growingTextView.bounds.size.height;

	if (diff != 0) {
		CGRect messageRect = [_messageView frame];
		messageRect.origin.y -= diff;
		messageRect.size.height += diff;
		[_messageView setFrame:messageRect];

		// Always stay at bottom
		if (scrollOnGrowingEnabled) {
			CGRect tableFrame = [_tableController.view frame];
			CGPoint contentPt = [_tableController.tableView contentOffset];
			contentPt.y += diff;
			if (contentPt.y + tableFrame.size.height > _tableController.tableView.contentSize.height)
				contentPt.y += diff;
			[_tableController.tableView setContentOffset:contentPt animated:FALSE];
		}

		CGRect tableRect = [_tableController.view frame];
		tableRect.size.height -= diff;
		[_tableController.view setFrame:tableRect];

		// if we're showing the compose message, update it position
		if (![_composeLabel isHidden]) {
			CGRect frame = [_composeLabel frame];
			frame.origin.y -= diff;
			[_composeLabel setFrame:frame];
		}
	}
}
/*
#pragma mark - UITextFieldDelegate Functions

- (BOOL)textViewShouldBeginEditing:(UITextView *)textView {
	if (_tableController.isEditing) {
		[_tableController setEditing:NO];
	}
	[_listTapGestureRecognizer setEnabled:TRUE];
	return TRUE;
}

- (BOOL)textViewShouldEndEditing:(UITextView *)textView {
	[_listTapGestureRecognizer setEnabled:FALSE];
	return TRUE;
}

- (BOOL)textView:(UITextView *)textView shouldChangeTextInRange:(NSRange)range replacementText:(NSString *)text {
	if ([text isEqualToString:@"\n"]) {
		[_listTapGestureRecognizer setEnabled:FALSE];
		[self onSendClick:nil];
		textView.text = @"";
		return NO;
	}
	return YES;
}

- (void)textViewDidChange:(UITextView *)textView {
	if ([textView.text length] > 0) {
		linphone_chat_room_compose(chatRoom);
	}
}

- (void)textViewDidEndEditing:(UITextView *)textView {
	[_listTapGestureRecognizer setEnabled:FALSE];
	[textView resignFirstResponder];
}
*/
/*
 - (void)growingTextView:(HPGrowingTextView *)growingTextView willChangeHeight:(float)height {
	int diff = height - growingTextView.bounds.size.height;

	if (diff != 0) {
		CGRect messageRect = [_messageView frame];
		messageRect.origin.y -= diff;
		messageRect.size.height += diff;
		[_messageView setFrame:messageRect];

		// Always stay at bottom
		if (scrollOnGrowingEnabled) {
			CGRect tableFrame = [_tableController.view frame];
			CGPoint contentPt = [_tableController.tableView contentOffset];
			contentPt.y += diff;
			if (contentPt.y + tableFrame.size.height > _tableController.tableView.contentSize.height)
				contentPt.y += diff;
			[_tableController.tableView setContentOffset:contentPt animated:FALSE];
		}

		CGRect tableRect = [_tableController.view frame];
		tableRect.size.height -= diff;
		[_tableController.view setFrame:tableRect];

		// if we're showing the compose message, update it position
		if (![_composeLabel isHidden]) {
			CGRect frame = [_composeLabel frame];
			frame.origin.y -= diff;
			[_composeLabel setFrame:frame];
		}
	}
}*/

#pragma mark - Action Functions

- (IBAction)onBackClick:(id)event {
	[_tableController setChatRoom:NULL];
	ChatsListView *view = VIEW(ChatsListView);
	[PhoneMainView.instance changeCurrentView:view.compositeViewDescription];
}

- (IBAction)onEditClick:(id)event {
	[_tableController setEditing:![_tableController isEditing] animated:TRUE];
	[_messageField resignFirstResponder];
}

- (IBAction)onSendClick:(id)event {
	if ([self sendMessage:[_messageField text] withExterlBodyUrl:nil withInternalURL:nil]) {
		scrollOnGrowingEnabled = FALSE;
		[_messageField setText:@""];
		scrollOnGrowingEnabled = TRUE;
		[self onMessageChange:nil];
	}
}

- (IBAction)onListTap:(id)sender {
	[_messageField resignFirstResponder];
}

- (IBAction)onDeleteClick:(id)sender {
	NSString *msg = [NSString stringWithFormat:NSLocalizedString(@"Do you want to delete selected message?", nil)];
	[UIConfirmationDialog ShowWithMessage:msg
		cancelMessage:nil
		confirmMessage:nil
		onCancelClick:^() {
		  [self onEditionChangeClick:nil];
		}
		onConfirmationClick:^() {
		  [_tableController removeSelectionUsing:nil];
		  [_tableController loadData];
		  [self onEditionChangeClick:nil];
		}];
}

- (IBAction)onEditionChangeClick:(id)sender {
	_backButton.hidden = _callButton.hidden = _tableController.isEditing;
}

- (IBAction)onCallClick:(id)sender {
	NSString *displayName = [FastAddressBook displayNameForAddress:linphone_chat_room_get_peer_address(chatRoom)];
	// Go to dialer view
	DialerView *view = VIEW(DialerView);
	[PhoneMainView.instance changeCurrentView:view.compositeViewDescription];
	char *uri = linphone_address_as_string(linphone_chat_room_get_peer_address(chatRoom));
	[view call:[NSString stringWithUTF8String:uri] displayName:displayName];
	ms_free(uri);
}

- (IBAction)onListSwipe:(id)sender {
	[self onBackClick:sender];
}

- (IBAction)onMessageChange:(id)sender {
	if ([[_messageField text] length] > 0) {
		[_sendButton setEnabled:TRUE];
	} else {
		[_sendButton setEnabled:FALSE];
	}
}

- (IBAction)onPictureClick:(id)event {
	[_messageField resignFirstResponder];
	CGRect rect = [_messageView convertRect:[_pictureButton frame] toView:self.view];
	[ImagePickerView SelectImageFromDevice:self atPosition:rect inView:self.view];
}

#pragma mark ChatRoomDelegate

- (BOOL)startImageUpload:(UIImage *)image url:(NSURL *)url {
	FileTransferDelegate *fileTransfer = [[FileTransferDelegate alloc] init];
	[fileTransfer upload:image withURL:url forChatRoom:chatRoom];
	[_tableController addChatEntry:linphone_chat_message_ref(fileTransfer.message)];
	[_tableController scrollToBottom:true];
	return TRUE;
}

- (void)resendChat:(NSString *)message withExternalUrl:(NSString *)url {
	[self sendMessage:message withExterlBodyUrl:[NSURL URLWithString:url] withInternalURL:nil];
}

#pragma mark ImagePickerDelegate

- (void)imagePickerDelegateImage:(UIImage *)image info:(NSDictionary *)info {
	// Dismiss popover on iPad
	if (LinphoneManager.runningOnIpad) {
		[VIEW(ImagePickerView).popoverController dismissPopoverAnimated:TRUE];
	}

	NSURL *url = [info valueForKey:UIImagePickerControllerReferenceURL];
	[self chooseImageQuality:image url:url];
}

#pragma mark - Keyboard Event Functions

- (void)keyboardWillHide:(NSNotification *)notif {
	NSTimeInterval duration = [[[notif userInfo] objectForKey:UIKeyboardAnimationDurationUserInfoKey] doubleValue];
	[UIView animateWithDuration:duration
						  delay:0
						options:UIViewAnimationOptionBeginFromCurrentState
					 animations:^{
						 CGFloat composeIndicatorCompensation = composingVisible ? _composeIndicatorView.frame.size.height : 0.0f;

						 // Show TabBar and status bar and also top bar
						 [PhoneMainView.instance fullScreen:NO];
						 [PhoneMainView.instance showTabBar:YES];
						 [PhoneMainView.instance showStatusBar:YES];
						 _topBar.alpha = 1.0;

						 // Resize chat view
						 {
							 CGRect chatFrame = [_chatView frame];
							 chatFrame.origin.y = _topBar.frame.origin.y + _topBar.frame.size.height;
							 chatFrame.size.height = [[self view] frame].size.height - chatFrame.origin.y;
							 [_chatView setFrame:chatFrame];
						 }

						 // Resize & Move table view
						 {
							 CGRect tableFrame = [_tableController.view frame];
							 tableFrame.size.height =
							 [_messageView frame].origin.y - tableFrame.origin.y - composeIndicatorCompensation;
							 [_tableController.view setFrame:tableFrame];

							 // Scroll to bottom
							 NSInteger lastSection = [_tableController.tableView numberOfSections] - 1;
							 if (lastSection >= 0) {
								 NSInteger lastRow = [_tableController.tableView numberOfRowsInSection:lastSection] - 1;
								 if (lastRow >= 0) {
									 [_tableController.tableView
									  scrollToRowAtIndexPath:[NSIndexPath indexPathForRow:lastRow inSection:lastSection]
									  atScrollPosition:UITableViewScrollPositionBottom
									  animated:FALSE];
								 }
							 }
						 }

					 }
					 completion:^(BOOL finished){
					 }];
}

- (void)keyboardWillShow:(NSNotification *)notif {
	NSTimeInterval duration = [[[notif userInfo] objectForKey:UIKeyboardAnimationDurationUserInfoKey] doubleValue];
	CGFloat composeIndicatorCompensation = composingVisible ? _composeIndicatorView.frame.size.height : 0.0f;

	[UIView animateWithDuration:duration
						  delay:0
						options:UIViewAnimationOptionBeginFromCurrentState
					 animations:^{

						 CGRect endFrame = [[[notif userInfo] objectForKey:UIKeyboardFrameEndUserInfoKey] CGRectValue];

						 if (([[UIDevice currentDevice].systemVersion floatValue] < 8) &&
							 UIInterfaceOrientationIsLandscape([UIApplication sharedApplication].statusBarOrientation)) {
							 int width = endFrame.size.height;
							 endFrame.size.height = endFrame.size.width;
							 endFrame.size.width = width;
						 }

						 // Hide TabBar and status bar and also top bar
						 [PhoneMainView.instance fullScreen:YES];
						 [PhoneMainView.instance showTabBar:NO];
						 [PhoneMainView.instance showStatusBar:NO];
						 _topBar.alpha = 0.0;

						 // Resize chat view
						 {
							 CGRect viewFrame = [[self view] frame];
							 CGRect rect = PhoneMainView.instance.view.bounds;
							 CGPoint pos = {viewFrame.size.width, viewFrame.size.height};
							 CGPoint gPos =
							 [self.view convertPoint:pos
											  toView:[UIApplication sharedApplication]
							  .keyWindow.rootViewController.view]; // Bypass IOS bug on landscape mode
							 float diff = (rect.size.height - gPos.y - endFrame.size.height);
							 if (diff > 0)
								 diff = 0;
							 CGRect chatFrame = [_chatView frame];
							 chatFrame.origin.y = 0;
							 chatFrame.size.height = viewFrame.size.height - chatFrame.origin.y + diff;
							 [_chatView setFrame:chatFrame];
						 }

						 // Resize & Move table view
						 {
							 CGRect tableFrame = _tableController.view.frame;
							 tableFrame.size.height =
							 [_messageView frame].origin.y - tableFrame.origin.y - composeIndicatorCompensation;
							 [_tableController.view setFrame:tableFrame];
						 }

						 // Scroll
						 NSInteger lastSection = [_tableController.tableView numberOfSections] - 1;
						 if (lastSection >= 0) {
							 NSInteger lastRow = [_tableController.tableView numberOfRowsInSection:lastSection] - 1;
							 if (lastRow >= 0) {
								 [_tableController.tableView
								  scrollToRowAtIndexPath:[NSIndexPath indexPathForRow:lastRow inSection:lastSection]
								  atScrollPosition:UITableViewScrollPositionBottom
								  animated:FALSE];
							 }
						 }

					 }
					 completion:^(BOOL finished){
					 }];
}

@end