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SPLWebActivity.m
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SPLWebActivity.m
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//
// SPLWebActivity.m
// SPLWebActivity
//
// Created by Jonathan Hersh on 3/1/15.
// Copyright (c) 2015 Splinesoft. All rights reserved.
//
#import "SPLWebActivity.h"
static char SPLWebActivityContext;
@interface SPLWebActivity ()
@property (nonatomic, weak) UIWebView *webView;
@property (nonatomic, weak) WKWebView *webKitWebView;
@end
@implementation SPLWebActivity
+ (instancetype)activityWithUIWebView:(UIWebView *)webView {
NSParameterAssert(webView);
SPLWebActivity *activity = [[self alloc] initWithType:NSUserActivityTypeBrowsingWeb];
activity.userActivity.webpageURL = webView.request.URL;
activity.userActivity.title = [webView stringByEvaluatingJavaScriptFromString:@"document.title"];
activity.webView = webView;
[activity.userActivity becomeCurrent];
return activity;
}
+ (instancetype)activityWithWKWebView:(WKWebView *)webView {
NSParameterAssert(webView);
SPLWebActivity *activity = [[self alloc] initWithType:NSUserActivityTypeBrowsingWeb];
activity.webKitWebView = webView;
[webView addObserver:activity
forKeyPath:NSStringFromSelector(@selector(URL))
options:NSKeyValueObservingOptionInitial | NSKeyValueObservingOptionNew
context:&SPLWebActivityContext];
[webView addObserver:activity
forKeyPath:NSStringFromSelector(@selector(title))
options:NSKeyValueObservingOptionInitial | NSKeyValueObservingOptionNew
context:&SPLWebActivityContext];
[activity.userActivity becomeCurrent];
return activity;
}
+ (instancetype)activityWithURL:(NSURL *)url {
NSParameterAssert(url);
SPLWebActivity *activity = [[self alloc] initWithType:NSUserActivityTypeBrowsingWeb];
activity.userActivity.webpageURL = url;
[activity.userActivity becomeCurrent];
return activity;
}
#pragma mark - Lifecycle
- (void)invalidate {
[super invalidate];
[self.webKitWebView removeObserver:self
forKeyPath:NSStringFromSelector(@selector(URL))
context:&SPLWebActivityContext];
[self.webKitWebView removeObserver:self
forKeyPath:NSStringFromSelector(@selector(title))
context:&SPLWebActivityContext];
}
#pragma mark - NSUserActivityDelegate
- (void)userActivityWillSave:(NSUserActivity *)userActivity {
[super userActivityWillSave:userActivity];
dispatch_async(dispatch_get_main_queue(), ^{
if (self.webKitWebView) {
self.userActivity.webpageURL = self.webKitWebView.URL;
self.userActivity.title = self.webKitWebView.title;
}
if (self.webView) {
self.userActivity.webpageURL = self.webView.request.URL;
self.userActivity.title = [self.webView stringByEvaluatingJavaScriptFromString:@"document.title"];
}
});
}
#pragma mark - KVO
- (void)observeValueForKeyPath:(NSString *)keyPath
ofObject:(id)object
change:(NSDictionary *)change
context:(void *)context {
if (context == &SPLWebActivityContext) {
id newValue = change[NSKeyValueChangeNewKey];
if (!newValue || [newValue isEqual:[NSNull null]]) {
return;
}
if ([keyPath isEqualToString:NSStringFromSelector(@selector(URL))]) {
self.userActivity.webpageURL = newValue;
} else if ([keyPath isEqualToString:NSStringFromSelector(@selector(title))]) {
self.userActivity.title = newValue;
}
[self setNeedsUpdate];
} else {
[super observeValueForKeyPath:keyPath
ofObject:object
change:change
context:context];
}
}
@end