From 633d23a78c21e0616b76ab9b7f840d81317538e5 Mon Sep 17 00:00:00 2001
From: Chris Scoville <ctscoville@gmail.com>
Date: Sun, 21 Feb 2016 15:15:44 -0800
Subject: [PATCH] Adding the option of using completion blocks for the appear
 and disappear animations.

---
 .../ZCAnimatedLabel/ZCAnimatedLabel.h         |  4 ++++
 .../ZCAnimatedLabel/ZCAnimatedLabel.m         | 22 +++++++++++++++++--
 2 files changed, 24 insertions(+), 2 deletions(-)

diff --git a/ZCAnimatedLabel/ZCAnimatedLabel/ZCAnimatedLabel.h b/ZCAnimatedLabel/ZCAnimatedLabel/ZCAnimatedLabel.h
index 7984e17..1e5d02d 100644
--- a/ZCAnimatedLabel/ZCAnimatedLabel/ZCAnimatedLabel.h
+++ b/ZCAnimatedLabel/ZCAnimatedLabel/ZCAnimatedLabel.h
@@ -93,8 +93,12 @@ typedef NS_ENUM(NSInteger, ZCAnimatedLabelAppearDirection)
 
 - (void) startAppearAnimation;
 
+- (void) startAppearAnimationWithCompletion:(void (^)(void))completion;
+
 - (void) startDisappearAnimation;
 
+- (void) startDisappearAnimationWithCompletion:(void (^)(void))completion;
+
 - (void) stopAnimation;
 
 /**
diff --git a/ZCAnimatedLabel/ZCAnimatedLabel/ZCAnimatedLabel.m b/ZCAnimatedLabel/ZCAnimatedLabel/ZCAnimatedLabel.m
index a2dc1c4..599a383 100644
--- a/ZCAnimatedLabel/ZCAnimatedLabel/ZCAnimatedLabel.m
+++ b/ZCAnimatedLabel/ZCAnimatedLabel/ZCAnimatedLabel.m
@@ -19,6 +19,8 @@ @interface ZCAnimatedLabel ()
 @property (nonatomic, assign) BOOL animatingAppear; //we are during appear stage or not
 @property (nonatomic, strong) ZCCoreTextLayout *layoutTool;
 @property (nonatomic, assign) NSTimeInterval animationStarTime;
+@property (nonatomic, copy) void (^appearAnimationCompleted)(void);
+@property (nonatomic, copy) void (^disappearAnimationCompleted)(void);
 
 @end
 
@@ -84,6 +86,11 @@ - (void) timerTick: (id) sender
     if (self.animationTime > self.animationDurationTotal) {
         self.displayLink.paused = YES;
         self.useDefaultDrawing = YES;
+        if (self.animatingAppear && self.appearAnimationCompleted != nil) {
+            self.appearAnimationCompleted();
+        } else if (!self.animatingAppear && self.disappearAnimationCompleted != nil) {
+            self.disappearAnimationCompleted();
+        }
     }
     else { //update text attributeds array
         
@@ -262,9 +269,9 @@ - (void) setUseDefaultDrawing:(BOOL)useDefaultDrawing
     [self setNeedsDisplay];
 }
 
-
-- (void) startAppearAnimation
+- (void) startAppearAnimationWithCompletion:(void (^)(void))completion
 {
+    self.appearAnimationCompleted = completion;
     self.animatingAppear = YES;
     self.animationTime = 0;
     self.useDefaultDrawing = NO;
@@ -273,8 +280,19 @@ - (void) startAppearAnimation
     [self setNeedsDisplay];
 }
 
+- (void) startAppearAnimation
+{
+    [self startAppearAnimationWithCompletion:nil];
+}
+
 - (void) startDisappearAnimation
 {
+    [self startDisppearAnimationWithCompletion:nil];
+}
+
+- (void) startDisppearAnimationWithCompletion:(void (^)(void))completion
+{
+    self.disappearAnimationCompleted = completion;
     self.animatingAppear = NO;
     self.animationTime = 0;
     self.useDefaultDrawing = NO;