Support for title and subtitle changing

.gitignore

@@ -15,4 +15,5 @@ build/
 xcuserdata
 *.xcuserstate
 *.xccheckout
-*.moved-aside
+*.moved-aside
+.idea

ALAlertBanner/ALAlertBanner+Private.h

@@ -44,6 +44,8 @@
 @required
 - (void)showAlertBanner:(ALAlertBanner *)alertBanner hideAfter:(NSTimeInterval)delay;
 - (void)hideAlertBanner:(ALAlertBanner *)alertBanner forced:(BOOL)forced;
+- (void)alertBanner:(ALAlertBanner *)alertBanner changeTitle:(NSString *)title subtitle:(NSString *)subtitle hideAfter:(NSTimeInterval)delay;
+- (void)alertBanner:(ALAlertBanner *)alertBanner willChangeHeight:(CGFloat)height toHeight:(CGFloat)newHeight inView:(UIView *)view;
 - (void)alertBannerWillShow:(ALAlertBanner *)alertBanner inView:(UIView *)view;
 - (void)alertBannerDidShow:(ALAlertBanner *)alertBanner inView:(UIView *)view;
 - (void)alertBannerWillHide:(ALAlertBanner *)alertBanner inView:(UIView *)view;
@@ -64,6 +66,7 @@
 - (void)pushAlertBanner:(CGFloat)distance forward:(BOOL)forward delay:(double)delay;
 - (void)updateSizeAndSubviewsAnimated:(BOOL)animated;
 - (void)updatePositionAfterRotationWithY:(CGFloat)yPos animated:(BOOL)animated;
+- (void)setTitle:(NSString *)titleText subtitle:(NSString *)subtitleText;
 - (id)nextAvailableViewController:(id)view;
 
 @end

ALAlertBanner/ALAlertBanner.h

@@ -112,6 +112,11 @@ typedef enum {
  */
 - (void)hide;
 
+/**
+  Change title and delay hiding.
+*/
+- (void)changeTitle:(NSString *)title subtitle:(NSString *)subtitle;
+
 /**
  Returns an array of all banners within a certain view.
  */

ALAlertBanner/ALAlertBanner.m

@@ -345,6 +345,10 @@ - (void)hide {
     [self.delegate hideAlertBanner:self forced:NO];
 }
 
+- (void)changeTitle:(NSString *)title subtitle:(NSString *)subtitle {
+    [self.delegate alertBanner:self changeTitle:title subtitle:subtitle hideAfter:self.secondsToShow];
+}
+
 # pragma mark -
 # pragma mark Internal Instance Methods
 
@@ -576,6 +580,15 @@ - (void)setInitialLayout {
     }
 }
 
+- (void)setTitle:(NSString *)titleText subtitle:(NSString *)subtitleText {
+    self.titleLabel.text = titleText;
+    self.subtitleLabel.text = subtitleText;
+
+    CGFloat origHeight = self.bounds.size.height;
+    [self updateSizeAndSubviewsAnimated:YES];
+    [self.delegate alertBanner:self willChangeHeight:origHeight toHeight:self.bounds.size.height inView:self.superview];
+}
+
 - (void)updateSizeAndSubviewsAnimated:(BOOL)animated {
     CGSize maxLabelSize = CGSizeMake(self.superview.bounds.size.width - (kMargin*3.f) - self.styleImageView.image.size.width, CGFLOAT_MAX);
     CGFloat titleLabelHeight = AL_SINGLELINE_TEXT_HEIGHT(self.titleLabel.text, self.titleLabel.font);
@@ -587,13 +600,15 @@ - (void)updateSizeAndSubviewsAnimated:(BOOL)animated {
     CGRect oldBounds = self.layer.bounds;
     CGRect newBounds = oldBounds;
     newBounds.size = CGSizeMake(self.superview.frame.size.width, heightForSelf);
+    BOOL forward = newBounds.size.height > oldBounds.size.height;
     self.layer.bounds = newBounds;
 
     if (animated) {
         CABasicAnimation *boundsAnimation = [CABasicAnimation animationWithKeyPath:@"bounds"];
         boundsAnimation.fromValue = [NSValue valueWithCGRect:oldBounds];
         boundsAnimation.toValue = [NSValue valueWithCGRect:newBounds];
         boundsAnimation.duration = boundsAnimationDuration;
+        boundsAnimation.timingFunction = forward ? [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseOut] : [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseIn];
         [self.layer addAnimation:boundsAnimation forKey:@"bounds"];
     }
 
@@ -619,6 +634,7 @@ - (void)updateSizeAndSubviewsAnimated:(BOOL)animated {
             CABasicAnimation *shadowAnimation = [CABasicAnimation animationWithKeyPath:@"shadowPath"];
             shadowAnimation.fromValue = (id)[UIBezierPath bezierPathWithRect:oldShadowPath].CGPath;
             shadowAnimation.toValue = (id)[UIBezierPath bezierPathWithRect:newShadowPath].CGPath;
+            shadowAnimation.timingFunction = forward ? [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseOut] : [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseIn];
             shadowAnimation.duration = boundsAnimationDuration;
             [self.layer addAnimation:shadowAnimation forKey:@"shadowPath"];
         }

ALAlertBanner/ALAlertBannerManager.m

@@ -250,6 +250,56 @@ - (void)alertBannerDidHide:(ALAlertBanner *)alertBanner inView:(UIView *)view {
     }
 }
 
+- (void)alertBanner:(ALAlertBanner *)alertBanner willChangeHeight:(CGFloat)oldHeight toHeight:(CGFloat)newHeight inView:(UIView *)view {
+    NSMutableArray *bannersArray = view.alertBanners;
+    NSArray *bannersInSamePosition = [bannersArray filteredArrayUsingPredicate:[NSPredicate predicateWithFormat:@"SELF.position == %i", alertBanner.position]];
+    NSUInteger index = [bannersInSamePosition indexOfObject:alertBanner];
+
+    BOOL forward = newHeight > oldHeight;
+    CGFloat distance = newHeight - oldHeight;
+
+    if (index != NSNotFound && index > 0) {
+        NSArray *bannersToPush = [bannersInSamePosition subarrayWithRange:NSMakeRange(0, index)];
+
+        for (ALAlertBanner *banner in bannersToPush)
+            [banner pushAlertBanner:distance forward:forward delay:0.f];
+    }
+
+    if (alertBanner.position == ALAlertBannerPositionBottom) {
+        [alertBanner pushAlertBanner:distance forward:forward delay:0.f];
+    }
+
+}
+
+- (void)alertBanner:(ALAlertBanner *)alertBanner changeTitle:(NSString *)title subtitle:(NSString *)subtitle hideAfter:(NSTimeInterval)delay {
+    dispatch_semaphore_t semaphore;
+    switch (alertBanner.position) {
+        case ALAlertBannerPositionTop:
+            semaphore = self.topPositionSemaphore;
+            break;
+        case ALAlertBannerPositionBottom:
+            semaphore = self.bottomPositionSemaphore;
+            break;
+        case ALAlertBannerPositionUnderNavBar:
+            semaphore = self.navBarPositionSemaphore;
+            break;
+    }
+
+    dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_LOW, 0), ^{
+        dispatch_semaphore_wait(semaphore, DISPATCH_TIME_FOREVER);
+        dispatch_async(dispatch_get_main_queue(), ^{
+            [alertBanner setTitle:title subtitle:subtitle];
+
+            [NSObject cancelPreviousPerformRequestsWithTarget:self selector:@selector(hideAlertBanner:) object:alertBanner];
+            if (delay > 0) {
+                [self performSelector:@selector(hideAlertBanner:) withObject:alertBanner afterDelay:delay];
+            }
+
+            dispatch_semaphore_signal(semaphore);
+        });
+    });
+}
+
 # pragma mark -
 # pragma mark Instance Methods
 

ALAlertBannerDemo/ALAlertBannerDemo/ViewController.m

@@ -16,6 +16,7 @@ @interface ViewController ()
 @property (nonatomic, strong) UIButton *topButton;
 @property (nonatomic, strong) UIButton *bottomButton;
 @property (nonatomic, strong) UIButton *underNavButton;
+@property (nonatomic, strong) UIButton *changeTextButton;
 
 @property (nonatomic, strong) UISlider *secondsToShowSlider;
 @property (nonatomic, strong) UILabel *secondsToShowLabel;
@@ -26,6 +27,8 @@ @interface ViewController ()
 @property (nonatomic) NSTimeInterval showAnimationDuration;
 @property (nonatomic) NSTimeInterval hideAnimationDuration;
 
+@property (nonatomic, weak) ALAlertBanner *lastBanner;
+
 @end
 
 @implementation ViewController
@@ -100,6 +103,11 @@ - (void)viewDidLoad {
     self.animationDurationLabel.text = @"Animation duration: 0.25 seconds";
     self.animationDurationLabel.textAlignment = NSTextAlignmentCenter;
     [self.view addSubview:self.animationDurationLabel];
+
+    self.changeTextButton = [UIButton buttonWithType:UIButtonTypeRoundedRect];
+    [self.changeTextButton setTitle:@"Change text" forState:UIControlStateNormal];
+    [self.changeTextButton addTarget:self action:@selector(changeText) forControlEvents:UIControlEventTouchUpInside];
+    [self.view addSubview:self.changeTextButton];
 }
 
 - (void)viewWillAppear:(BOOL)animated {
@@ -121,6 +129,8 @@ - (void)configureView {
     self.secondsToShowLabel.frame = CGRectMake(self.secondsToShowSlider.frame.origin.x, self.secondsToShowSlider.frame.origin.y + self.secondsToShowSlider.frame.size.height, self.secondsToShowSlider.frame.size.width, 20.f);
     self.animationDurationSlider.frame = CGRectMake(self.secondsToShowSlider.frame.origin.x, self.secondsToShowLabel.frame.origin.y + self.secondsToShowLabel.frame.size.height + 20.f, self.view.frame.size.width - 40.f, 20.f);
     self.animationDurationLabel.frame = CGRectMake(self.animationDurationSlider.frame.origin.x, self.animationDurationSlider.frame.origin.y + self.animationDurationSlider.frame.size.height, self.animationDurationSlider.frame.size.width, 20.f);
+
+    self.changeTextButton.frame = CGRectMake(self.bottomButton.frame.origin.x, self.animationDurationSlider.frame.origin.y + self.animationDurationSlider.frame.size.height + 20.f, self.bottomButton.frame.size.width, self.bottomButton.frame.size.height);
 }
 
 - (void)showAlertBannerInView:(UIButton *)button {
@@ -134,6 +144,12 @@ - (void)showAlertBannerInView:(UIButton *)button {
     banner.showAnimationDuration = self.showAnimationDuration;
     banner.hideAnimationDuration = self.hideAnimationDuration;
     [banner show];
+
+    self.lastBanner = banner;
+}
+
+- (void)changeText {
+    [self.lastBanner changeTitle:@"Text changed" subtitle:[[AppDelegate randomLoremIpsum] stringByAppendingString:[AppDelegate randomLoremIpsum]]];
 }
 
 - (void)showAlertBannerInWindow:(UIButton *)button {