From 3e8437ae559487362fae3525beb79c534c213a51 Mon Sep 17 00:00:00 2001
From: 单军华
Date: Thu, 12 Jul 2018 13:44:34 +0800
Subject: [PATCH] bug修复和功能优化
---
screendisplay/Pods/ZFPlayer/ZFPlayer/Classes/Core/ZFKVOController.m | 143 +++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 143 insertions(+), 0 deletions(-)
diff --git a/screendisplay/Pods/ZFPlayer/ZFPlayer/Classes/Core/ZFKVOController.m b/screendisplay/Pods/ZFPlayer/ZFPlayer/Classes/Core/ZFKVOController.m
new file mode 100644
index 0000000..7633b20
--- /dev/null
+++ b/screendisplay/Pods/ZFPlayer/ZFPlayer/Classes/Core/ZFKVOController.m
@@ -0,0 +1,143 @@
+//
+// UIScrollView+ZFPlayer.m
+// ZFPlayer
+//
+// Copyright (c) 2016��� ��������� ( http://github.com/renzifeng )
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#import "ZFKVOController.h"
+
+@interface ZFKVOEntry : NSObject
+@property (nonatomic, weak) NSObject *observer;
+@property (nonatomic, strong) NSString *keyPath;
+
+@end
+
+@implementation ZFKVOEntry
+@synthesize observer;
+@synthesize keyPath;
+
+@end
+
+@interface ZFKVOController ()
+@property (nonatomic, weak) NSObject *target;
+@property (nonatomic, strong) NSMutableArray *observerArray;
+
+@end
+
+@implementation ZFKVOController
+
+- (instancetype)initWithTarget:(NSObject *)target {
+ self = [super init];
+ if (self) {
+ _target = target;
+ _observerArray = [[NSMutableArray alloc] init];
+ }
+ return self;
+}
+
+- (void)safelyAddObserver:(NSObject *)observer
+ forKeyPath:(NSString *)keyPath
+ options:(NSKeyValueObservingOptions)options
+ context:(void *)context {
+ NSObject *target = _target;
+ if (target == nil) return;
+
+ BOOL removed = [self removeEntryOfObserver:observer forKeyPath:keyPath];
+ if (removed) {
+ // duplicated register
+ NSLog(@"duplicated observer");
+ }
+
+ @try {
+ [target addObserver:observer
+ forKeyPath:keyPath
+ options:options
+ context:context];
+
+ ZFKVOEntry *entry = [[ZFKVOEntry alloc] init];
+ entry.observer = observer;
+ entry.keyPath = keyPath;
+ [_observerArray addObject:entry];
+ } @catch (NSException *e) {
+ NSLog(@"ZFKVO: failed to add observer for %@\n", keyPath);
+ }
+}
+
+- (void)safelyRemoveObserver:(NSObject *)observer
+ forKeyPath:(NSString *)keyPath {
+ NSObject *target = _target;
+ if (target == nil) return;
+
+ BOOL removed = [self removeEntryOfObserver:observer forKeyPath:keyPath];
+ if (removed) {
+ // duplicated register
+ NSLog(@"duplicated observer");
+ }
+
+ @try {
+ if (removed) {
+ [target removeObserver:observer
+ forKeyPath:keyPath];
+ }
+ } @catch (NSException *e) {
+ NSLog(@"ZFKVO: failed to remove observer for %@\n", keyPath);
+ }
+}
+
+- (void)safelyRemoveAllObservers {
+ __block NSObject *target = _target;
+ if (target == nil) return;
+ [_observerArray enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) {
+ ZFKVOEntry *entry = obj;
+ if (entry == nil) return;
+ NSObject *observer = entry.observer;
+ if (observer == nil) return;
+ @try {
+ [target removeObserver:observer
+ forKeyPath:entry.keyPath];
+ } @catch (NSException *e) {
+ NSLog(@"ZFKVO: failed to remove observer for %@\n", entry.keyPath);
+ }
+ }];
+
+ [_observerArray removeAllObjects];
+}
+
+- (BOOL)removeEntryOfObserver:(NSObject *)observer
+ forKeyPath:(NSString *)keyPath {
+ __block NSInteger foundIndex = -1;
+ [_observerArray enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) {
+ ZFKVOEntry *entry = (ZFKVOEntry *)obj;
+ if (entry.observer == observer &&
+ [entry.keyPath isEqualToString:keyPath]) {
+ foundIndex = idx;
+ *stop = YES;
+ }
+ }];
+
+ if (foundIndex >= 0) {
+ [_observerArray removeObjectAtIndex:foundIndex];
+ return YES;
+ }
+ return NO;
+}
+
+@end
--
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