添加HWPanModal和FLAnimatedImage

Pods/HWPanModal/Sources/KVO/KeyValueObserver.m

@@ -0,0 +1,85 @@
+//
+//  KeyValueObserver.m
+//  Lab Color Space Explorer
+//
+//  Created by Daniel Eggert on 01/12/2013.
+//  Copyright (c) 2013 objc.io. All rights reserved.
+//
+
+#import "KeyValueObserver.h"
+
+//
+// Created by chris on 7/24/13.
+//
+
+#import "KeyValueObserver.h"
+
+@interface KeyValueObserver ()
+@property (nonatomic, weak) id observedObject;
+@property (nonatomic, copy) NSString* keyPath;
+@property (nonatomic, assign) BOOL shouldObserver;
+@end
+
+@implementation KeyValueObserver
+
+- (id)initWithObject:(id)object keyPath:(NSString*)keyPath target:(id)target selector:(SEL)selector options:(NSKeyValueObservingOptions)options;
+{
+    if (object == nil) {
+        return nil;
+    }
+    NSParameterAssert(target != nil);
+    NSParameterAssert([target respondsToSelector:selector]);
+    self = [super init];
+    if (self) {
+        _shouldObserver = YES;
+        self.target = target;
+        self.selector = selector;
+        self.observedObject = object;
+        self.keyPath = keyPath;
+        [object addObserver:self forKeyPath:keyPath options:options context:(__bridge void *)(self)];
+    }
+    return self;
+}
+
++ (NSObject *)observeObject:(id)object keyPath:(NSString*)keyPath target:(id)target selector:(SEL)selector __attribute__((warn_unused_result));
+{
+    return [self observeObject:object keyPath:keyPath target:target selector:selector options:0];
+}
+
++ (NSObject *)observeObject:(id)object keyPath:(NSString*)keyPath target:(id)target selector:(SEL)selector options:(NSKeyValueObservingOptions)options __attribute__((warn_unused_result));
+{
+    return [[self alloc] initWithObject:object keyPath:keyPath target:target selector:selector options:options];
+}
+
+- (void)observeValueForKeyPath:(NSString*)keyPath ofObject:(id)object change:(NSDictionary*)change context:(void*)context
+{
+    if (context == (__bridge void *)(self)) {
+        [self didChange:change];
+    }
+}
+
+- (void)didChange:(NSDictionary *)change {
+    
+    if (!self.shouldObserver) {
+        return;
+    }
+    
+    id strongTarget = self.target;
+    
+    if ([strongTarget respondsToSelector:self.selector]) {
+        #pragma clang diagnostic push
+        #pragma clang diagnostic ignored "-Warc-performSelector-leaks"
+            [strongTarget performSelector:self.selector withObject:change];
+        #pragma clang diagnostic pop
+    }
+}
+
+- (void)dealloc {
+    [self.observedObject removeObserver:self forKeyPath:self.keyPath];
+}
+
+- (void)unObserver {
+    self.shouldObserver = NO;
+}
+
+@end