mirror of
https://gitlab.opencode.de/bwi/bundesmessenger/clients/bundesmessenger-ios.git
synced 2026-05-05 23:47:44 +02:00
Moved code under a subdirectory: Console
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manuroe
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/*
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Copyright 2014 OpenMarket Ltd
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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#import "RoomTitleView.h"
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#import "MatrixSDKHandler.h"
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@interface RoomTitleView () {
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id messagesListener;
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// the topic can be animated if it is longer than the screen size
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UIScrollView* scrollView;
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UILabel* label;
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UIView* topicTextFieldMaskView;
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// do not start the topic animation asap
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NSTimer * animationTimer;
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}
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@property (weak, nonatomic) IBOutlet NSLayoutConstraint *displayNameTextFieldTopConstraint;
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@end
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@implementation RoomTitleView
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- (void)dealloc {
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if (messagesListener && _mxRoom) {
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[_mxRoom removeListener:messagesListener];
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messagesListener = nil;
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}
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_mxRoom = nil;
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// stop any animation
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[self stopTopicAnimation];
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}
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- (void)refreshDisplay {
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if (_mxRoom) {
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// replace empty string by nil : avoid having the placeholder 'Room name" when there is no displayname
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_displayNameTextField.text = (_mxRoom.state.displayname.length) ? _mxRoom.state.displayname : nil;
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_topicTextField.text = (_mxRoom.state.topic) ? _mxRoom.state.topic : nil;
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} else {
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_displayNameTextField.text = @"Please select a room";
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_displayNameTextField.enabled = NO;
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_topicTextField.text = nil;
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}
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self.hiddenTopic = (!_topicTextField.text.length);
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}
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- (void)setMxRoom:(MXRoom *)mxRoom {
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// Check whether the room is actually changed
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if (_mxRoom != mxRoom) {
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// Remove potential listener
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if (messagesListener && _mxRoom) {
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[_mxRoom removeListener:messagesListener];
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messagesListener = nil;
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}
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if (mxRoom) {
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// Register a listener to handle messages related to room name
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messagesListener = [mxRoom listenToEventsOfTypes:@[kMXEventTypeStringRoomName, kMXEventTypeStringRoomTopic, kMXEventTypeStringRoomAliases]
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onEvent:^(MXEvent *event, MXEventDirection direction, MXRoomState *roomState) {
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// Consider only live events
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if (direction == MXEventDirectionForwards) {
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[self refreshDisplay];
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}
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}];
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}
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_mxRoom = mxRoom;
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}
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// Force refresh
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[self refreshDisplay];
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}
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- (void)setEditable:(BOOL)editable {
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self.displayNameTextField.enabled = editable;
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self.topicTextField.enabled = editable;
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}
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- (void)setHiddenTopic:(BOOL)hiddenTopic {
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[self stopTopicAnimation];
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if (hiddenTopic) {
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_topicTextField.hidden = YES;
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_displayNameTextFieldTopConstraint.constant = 10;
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} else {
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_topicTextField.hidden = NO;
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_displayNameTextFieldTopConstraint.constant = 2;
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}
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}
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- (BOOL)isEditing {
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return (_displayNameTextField.isEditing || _topicTextField.isEditing);
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}
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// start with delay
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- (void)startTopicAnimation {
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// stop any pending timer
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if (animationTimer) {
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[animationTimer invalidate];
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animationTimer = nil;
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}
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// already animated the topic
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if (scrollView) {
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return;
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}
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// compute the text width
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UIFont* font = _topicTextField.font;
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// see font description
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if (!font) {
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font = [UIFont systemFontOfSize:12];
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}
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NSDictionary *attributes = @{NSFontAttributeName: font};
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CGSize stringSize = CGSizeMake(CGFLOAT_MAX, _topicTextField.frame.size.height);
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stringSize = [_topicTextField.text boundingRectWithSize:stringSize
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options:NSStringDrawingUsesLineFragmentOrigin|NSStringDrawingUsesFontLeading
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attributes:attributes
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context:nil].size;
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// does not need to animate the text
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if (stringSize.width < _topicTextField.frame.size.width) {
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return;
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}
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// put the text in a scrollView to animat it
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scrollView = [[UIScrollView alloc] initWithFrame: _topicTextField.frame];
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label = [[UILabel alloc] initWithFrame:_topicTextField.frame];
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label.text = _topicTextField.text;
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label.textColor = _topicTextField.textColor;
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label.font = _topicTextField.font;
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// move to the top left
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CGRect topicTextFieldFrame = _topicTextField.frame;
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topicTextFieldFrame.origin = CGPointZero;
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label.frame = topicTextFieldFrame;
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_topicTextField.hidden = YES;
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[scrollView addSubview:label];
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[self insertSubview:scrollView belowSubview:topicTextFieldMaskView];
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// update the size
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[label sizeToFit];
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// offset
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CGPoint offset = scrollView.contentOffset;
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offset.x = label.frame.size.width - scrollView.frame.size.width;
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// duration (magic computation to give more time if the text is longer)
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CGFloat duration = label.frame.size.width / scrollView.frame.size.width * 3;
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// animate the topic once to display its full content
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[UIView animateWithDuration:duration delay:0 options:UIViewAnimationOptionAutoreverse | UIViewAnimationOptionCurveLinear animations:^{
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[scrollView setContentOffset:offset animated:NO];
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} completion:^(BOOL finished) {
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[self stopTopicAnimation];
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}];
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}
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- (BOOL)stopTopicAnimation {
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// stop running timers
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if (animationTimer) {
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[animationTimer invalidate];
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animationTimer = nil;
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}
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// if there is an animation is progress
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if (scrollView) {
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_topicTextField.hidden = NO;
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[scrollView.layer removeAllAnimations];
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[scrollView removeFromSuperview];
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scrollView = nil;
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label = nil;
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[self addSubview:_topicTextField];
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// must be done to be able to restart the animation
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// the Z order is not kept
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[self bringSubviewToFront:topicTextFieldMaskView];
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return YES;
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}
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return NO;
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}
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- (void)editTopic {
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[self stopTopicAnimation];
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dispatch_async(dispatch_get_main_queue(), ^{
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[_topicTextField becomeFirstResponder];
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});
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}
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- (void)dismissKeyboard {
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// Hide the keyboard
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[_displayNameTextField resignFirstResponder];
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[_topicTextField resignFirstResponder];
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// restart the animation
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[self stopTopicAnimation];
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}
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- (void)layoutSubviews {
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// mother class call
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[super layoutSubviews];
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// add a mask to trap the tap events
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// it is faster (and simpliest) than subclassing the scrollview or the textField
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// any other gesture could also be trapped here
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if (!topicTextFieldMaskView) {
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topicTextFieldMaskView = [[UIView alloc] initWithFrame:_topicTextField.frame];
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topicTextFieldMaskView.backgroundColor = [UIColor clearColor];
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[self addSubview:topicTextFieldMaskView];
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// tap -> switch to text edition
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UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(editTopic)];
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[tap setNumberOfTouchesRequired:1];
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[tap setNumberOfTapsRequired:1];
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[tap setDelegate:self];
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[topicTextFieldMaskView addGestureRecognizer:tap];
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// long tap -> animate the topic
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UILongPressGestureRecognizer *longPress = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(startTopicAnimation)];
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[topicTextFieldMaskView addGestureRecognizer:longPress];
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}
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}
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- (void)setFrame:(CGRect)frame {
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// mother class call
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[super setFrame:frame];
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// stop any running animation if the frame is updated (screen rotation for example)
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if (!CGRectEqualToRect(CGRectIntegral(frame), CGRectIntegral(self.frame))) {
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// stop any running application
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[self stopTopicAnimation];
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}
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// update the mask frame
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if (self.topicTextField.hidden) {
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topicTextFieldMaskView.frame = CGRectZero;
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} else {
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topicTextFieldMaskView.frame = self.topicTextField.frame;
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}
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// topicTextField switches becomes the first responder or it is not anymore the first responder
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if (self.topicTextField.isFirstResponder != (topicTextFieldMaskView.hidden)) {
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topicTextFieldMaskView.hidden = self.topicTextField.isFirstResponder;
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// move topicTextFieldMaskView to the foreground
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// when topicTextField has been the first responder, it lets a view over topicTextFieldMaskView
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// so restore the expected Z order
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if (!topicTextFieldMaskView.hidden) {
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[self bringSubviewToFront:topicTextFieldMaskView];
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}
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}
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}
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@end
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