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RNCWebView.m
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RNCWebView.m
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/**
* Copyright (c) 2015-present, Facebook, Inc.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
#import "RNCWebView.h"
#import <React/RCTConvert.h>
#import <React/RCTAutoInsetsProtocol.h>
#import "RNCWKProcessPoolManager.h"
#if !TARGET_OS_OSX
#import <UIKit/UIKit.h>
#else
#import <React/RCTUIKit.h>
#endif // !TARGET_OS_OSX
#import "objc/runtime.h"
static NSTimer *keyboardTimer;
static NSString *const HistoryShimName = @"ReactNativeHistoryShim";
static NSString *const MessageHandlerName = @"ReactNativeWebView";
static NSURLCredential* clientAuthenticationCredential;
static NSDictionary* customCertificatesForHost;
#if !TARGET_OS_OSX
// runtime trick to remove WKWebView keyboard default toolbar
// see: http://stackoverflow.com/questions/19033292/ios-7-uiwebview-keyboard-issue/19042279#19042279
@interface _SwizzleHelperWK : UIView
@property (nonatomic, copy) WKWebView *webView;
@end
@implementation _SwizzleHelperWK
-(id)inputAccessoryView
{
if (_webView == nil) {
return nil;
}
if ([_webView respondsToSelector:@selector(inputAssistantItem)]) {
UITextInputAssistantItem *inputAssistantItem = [_webView inputAssistantItem];
inputAssistantItem.leadingBarButtonGroups = @[];
inputAssistantItem.trailingBarButtonGroups = @[];
}
return nil;
}
@end
#endif // !TARGET_OS_OSX
#if TARGET_OS_OSX
@interface RNCWKWebView : WKWebView
@end
@implementation RNCWKWebView
- (void)scrollWheel:(NSEvent *)theEvent {
RNCWebView *rncWebView = (RNCWebView *)[self superview];
RCTAssert([rncWebView isKindOfClass:[rncWebView class]], @"superview must be an RNCWebView");
if (![rncWebView scrollEnabled]) {
[[self nextResponder] scrollWheel:theEvent];
return;
}
[super scrollWheel:theEvent];
}
@end
#endif // TARGET_OS_OSX
@interface RNCWebView () <WKUIDelegate, WKNavigationDelegate, WKScriptMessageHandler,
#if !TARGET_OS_OSX
UIScrollViewDelegate,
#endif // !TARGET_OS_OSX
RCTAutoInsetsProtocol>
@property (nonatomic, copy) RCTDirectEventBlock onFileDownload;
@property (nonatomic, copy) RCTDirectEventBlock onLoadingStart;
@property (nonatomic, copy) RCTDirectEventBlock onLoadingFinish;
@property (nonatomic, copy) RCTDirectEventBlock onLoadingError;
@property (nonatomic, copy) RCTDirectEventBlock onLoadingProgress;
@property (nonatomic, copy) RCTDirectEventBlock onShouldStartLoadWithRequest;
@property (nonatomic, copy) RCTDirectEventBlock onHttpError;
@property (nonatomic, copy) RCTDirectEventBlock onMessage;
@property (nonatomic, copy) RCTDirectEventBlock onScroll;
@property (nonatomic, copy) RCTDirectEventBlock onContentProcessDidTerminate;
#if !TARGET_OS_OSX
@property (nonatomic, copy) WKWebView *webView;
#else
@property (nonatomic, copy) RNCWKWebView *webView;
#endif // !TARGET_OS_OSX
@property (nonatomic, strong) WKUserScript *postMessageScript;
@property (nonatomic, strong) WKUserScript *atStartScript;
@property (nonatomic, strong) WKUserScript *atEndScript;
@end
@implementation RNCWebView
{
#if !TARGET_OS_OSX
UIColor * _savedBackgroundColor;
#else
RCTUIColor * _savedBackgroundColor;
#endif // !TARGET_OS_OSX
BOOL _savedHideKeyboardAccessoryView;
BOOL _savedKeyboardDisplayRequiresUserAction;
// Workaround for StatusBar appearance bug for iOS 12
// https://github.com/react-native-webview/react-native-webview/issues/62
BOOL _isFullScreenVideoOpen;
#if !TARGET_OS_OSX
UIStatusBarStyle _savedStatusBarStyle;
#endif // !TARGET_OS_OSX
BOOL _savedStatusBarHidden;
#if defined(__IPHONE_OS_VERSION_MAX_ALLOWED) && __IPHONE_OS_VERSION_MAX_ALLOWED >= 110000 /* __IPHONE_11_0 */
UIScrollViewContentInsetAdjustmentBehavior _savedContentInsetAdjustmentBehavior;
#endif
#if defined(__IPHONE_OS_VERSION_MAX_ALLOWED) && __IPHONE_OS_VERSION_MAX_ALLOWED >= 130000 /* __IPHONE_13_0 */
BOOL _savedAutomaticallyAdjustsScrollIndicatorInsets;
#endif
}
- (instancetype)initWithFrame:(CGRect)frame
{
if ((self = [super initWithFrame:frame])) {
#if !TARGET_OS_OSX
super.backgroundColor = [UIColor clearColor];
#else
super.backgroundColor = [RCTUIColor clearColor];
#endif // !TARGET_OS_OSX
_bounces = YES;
_scrollEnabled = YES;
_showsHorizontalScrollIndicator = YES;
_showsVerticalScrollIndicator = YES;
_directionalLockEnabled = YES;
_automaticallyAdjustContentInsets = YES;
_autoManageStatusBarEnabled = YES;
_contentInset = UIEdgeInsetsZero;
_savedKeyboardDisplayRequiresUserAction = YES;
#if !TARGET_OS_OSX
_savedStatusBarStyle = RCTSharedApplication().statusBarStyle;
_savedStatusBarHidden = RCTSharedApplication().statusBarHidden;
#endif // !TARGET_OS_OSX
_injectedJavaScript = nil;
_injectedJavaScriptForMainFrameOnly = YES;
_injectedJavaScriptBeforeContentLoaded = nil;
_injectedJavaScriptBeforeContentLoadedForMainFrameOnly = YES;
#if defined(__IPHONE_OS_VERSION_MAX_ALLOWED) && __IPHONE_OS_VERSION_MAX_ALLOWED >= 110000 /* __IPHONE_11_0 */
_savedContentInsetAdjustmentBehavior = UIScrollViewContentInsetAdjustmentNever;
#endif
#if defined(__IPHONE_OS_VERSION_MAX_ALLOWED) && __IPHONE_OS_VERSION_MAX_ALLOWED >= 130000 /* __IPHONE_13_0 */
_savedAutomaticallyAdjustsScrollIndicatorInsets = NO;
#endif
}
#if !TARGET_OS_OSX
[[NSNotificationCenter defaultCenter]addObserver:self
selector:@selector(appDidBecomeActive)
name:UIApplicationDidBecomeActiveNotification
object:nil];
[[NSNotificationCenter defaultCenter]addObserver:self
selector:@selector(appWillResignActive)
name:UIApplicationWillResignActiveNotification
object:nil];
if (@available(iOS 12.0, *)) {
// Workaround for a keyboard dismissal bug present in iOS 12
// https://openradar.appspot.com/radar?id=5018321736957952
[[NSNotificationCenter defaultCenter]
addObserver:self
selector:@selector(keyboardWillHide)
name:UIKeyboardWillHideNotification object:nil];
[[NSNotificationCenter defaultCenter]
addObserver:self
selector:@selector(keyboardWillShow)
name:UIKeyboardWillShowNotification object:nil];
// Workaround for StatusBar appearance bug for iOS 12
// https://github.com/react-native-webview/react-native-webview/issues/62
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(showFullScreenVideoStatusBars)
name:UIWindowDidBecomeVisibleNotification
object:nil];
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(hideFullScreenVideoStatusBars)
name:UIWindowDidBecomeHiddenNotification
object:nil];
}
#endif // !TARGET_OS_OSX
return self;
}
- (void)dealloc
{
[[NSNotificationCenter defaultCenter] removeObserver:self];
}
/**
* See https://stackoverflow.com/questions/25713069/why-is-wkwebview-not-opening-links-with-target-blank/25853806#25853806 for details.
*/
- (WKWebView *)webView:(WKWebView *)webView createWebViewWithConfiguration:(WKWebViewConfiguration *)configuration forNavigationAction:(WKNavigationAction *)navigationAction windowFeatures:(WKWindowFeatures *)windowFeatures
{
if (!navigationAction.targetFrame.isMainFrame) {
[webView loadRequest:navigationAction.request];
}
return nil;
}
- (WKWebViewConfiguration *)setUpWkWebViewConfig
{
WKWebViewConfiguration *wkWebViewConfig = [WKWebViewConfiguration new];
WKPreferences *prefs = [[WKPreferences alloc]init];
BOOL _prefsUsed = NO;
if (!_javaScriptEnabled) {
prefs.javaScriptEnabled = NO;
_prefsUsed = YES;
}
if (_allowUniversalAccessFromFileURLs) {
[wkWebViewConfig setValue:@TRUE forKey:@"allowUniversalAccessFromFileURLs"];
}
if (_allowFileAccessFromFileURLs) {
[prefs setValue:@TRUE forKey:@"allowFileAccessFromFileURLs"];
_prefsUsed = YES;
}
if (_javaScriptCanOpenWindowsAutomatically) {
[prefs setValue:@TRUE forKey:@"javaScriptCanOpenWindowsAutomatically"];
_prefsUsed = YES;
}
if (_prefsUsed) {
wkWebViewConfig.preferences = prefs;
}
if (_incognito) {
wkWebViewConfig.websiteDataStore = [WKWebsiteDataStore nonPersistentDataStore];
} else if (_cacheEnabled) {
wkWebViewConfig.websiteDataStore = [WKWebsiteDataStore defaultDataStore];
}
if(self.useSharedProcessPool) {
wkWebViewConfig.processPool = [[RNCWKProcessPoolManager sharedManager] sharedProcessPool];
}
wkWebViewConfig.userContentController = [WKUserContentController new];
#if defined(__IPHONE_OS_VERSION_MAX_ALLOWED) && __IPHONE_OS_VERSION_MAX_ALLOWED >= 130000 /* iOS 13 */
if (@available(iOS 13.0, *)) {
WKWebpagePreferences *pagePrefs = [[WKWebpagePreferences alloc]init];
pagePrefs.preferredContentMode = _contentMode;
wkWebViewConfig.defaultWebpagePreferences = pagePrefs;
}
#endif
#if defined(__IPHONE_OS_VERSION_MAX_ALLOWED) && __IPHONE_OS_VERSION_MAX_ALLOWED >= 140000 /* iOS 14 */
if (@available(iOS 14.0, *)) {
if ([wkWebViewConfig respondsToSelector:@selector(limitsNavigationsToAppBoundDomains)]) {
if (_limitsNavigationsToAppBoundDomains) {
wkWebViewConfig.limitsNavigationsToAppBoundDomains = YES;
}
}
}
#endif
// Shim the HTML5 history API:
[wkWebViewConfig.userContentController addScriptMessageHandler:[[RNCWeakScriptMessageDelegate alloc] initWithDelegate:self]
name:HistoryShimName];
[self resetupScripts:wkWebViewConfig];
#if !TARGET_OS_OSX
wkWebViewConfig.allowsInlineMediaPlayback = _allowsInlineMediaPlayback;
#if WEBKIT_IOS_10_APIS_AVAILABLE
wkWebViewConfig.mediaTypesRequiringUserActionForPlayback = _mediaPlaybackRequiresUserAction
? WKAudiovisualMediaTypeAll
: WKAudiovisualMediaTypeNone;
wkWebViewConfig.dataDetectorTypes = _dataDetectorTypes;
#else
wkWebViewConfig.mediaPlaybackRequiresUserAction = _mediaPlaybackRequiresUserAction;
#endif
#endif // !TARGET_OS_OSX
if (_applicationNameForUserAgent) {
wkWebViewConfig.applicationNameForUserAgent = [NSString stringWithFormat:@"%@ %@", wkWebViewConfig.applicationNameForUserAgent, _applicationNameForUserAgent];
}
return wkWebViewConfig;
}
- (void)didMoveToWindow
{
if (self.window != nil && _webView == nil) {
WKWebViewConfiguration *wkWebViewConfig = [self setUpWkWebViewConfig];
#if !TARGET_OS_OSX
_webView = [[WKWebView alloc] initWithFrame:self.bounds configuration: wkWebViewConfig];
#else
_webView = [[RNCWKWebView alloc] initWithFrame:self.bounds configuration: wkWebViewConfig];
#endif // !TARGET_OS_OSX
[self setBackgroundColor: _savedBackgroundColor];
#if !TARGET_OS_OSX
_webView.scrollView.delegate = self;
#endif // !TARGET_OS_OSX
_webView.UIDelegate = self;
_webView.navigationDelegate = self;
#if !TARGET_OS_OSX
if (_pullToRefreshEnabled) {
[self addPullToRefreshControl];
}
_webView.scrollView.scrollEnabled = _scrollEnabled;
_webView.scrollView.pagingEnabled = _pagingEnabled;
//For UIRefreshControl to work correctly, the bounces should always be true
_webView.scrollView.bounces = _pullToRefreshEnabled || _bounces;
_webView.scrollView.showsHorizontalScrollIndicator = _showsHorizontalScrollIndicator;
_webView.scrollView.showsVerticalScrollIndicator = _showsVerticalScrollIndicator;
_webView.scrollView.directionalLockEnabled = _directionalLockEnabled;
#endif // !TARGET_OS_OSX
_webView.allowsLinkPreview = _allowsLinkPreview;
[_webView addObserver:self forKeyPath:@"estimatedProgress" options:NSKeyValueObservingOptionOld | NSKeyValueObservingOptionNew context:nil];
_webView.allowsBackForwardNavigationGestures = _allowsBackForwardNavigationGestures;
if (_userAgent) {
_webView.customUserAgent = _userAgent;
}
#if defined(__IPHONE_OS_VERSION_MAX_ALLOWED) && __IPHONE_OS_VERSION_MAX_ALLOWED >= 110000 /* __IPHONE_11_0 */
if ([_webView.scrollView respondsToSelector:@selector(setContentInsetAdjustmentBehavior:)]) {
_webView.scrollView.contentInsetAdjustmentBehavior = _savedContentInsetAdjustmentBehavior;
}
#endif
#if defined(__IPHONE_OS_VERSION_MAX_ALLOWED) && __IPHONE_OS_VERSION_MAX_ALLOWED >= 130000 /* __IPHONE_13_0 */
if (@available(iOS 13.0, *)) {
_webView.scrollView.automaticallyAdjustsScrollIndicatorInsets = _savedAutomaticallyAdjustsScrollIndicatorInsets;
}
#endif
[self addSubview:_webView];
[self setHideKeyboardAccessoryView: _savedHideKeyboardAccessoryView];
[self setKeyboardDisplayRequiresUserAction: _savedKeyboardDisplayRequiresUserAction];
[self visitSource];
}
}
// Update webview property when the component prop changes.
- (void)setAllowsBackForwardNavigationGestures:(BOOL)allowsBackForwardNavigationGestures {
_allowsBackForwardNavigationGestures = allowsBackForwardNavigationGestures;
_webView.allowsBackForwardNavigationGestures = _allowsBackForwardNavigationGestures;
}
- (void)removeFromSuperview
{
if (_webView) {
[_webView.configuration.userContentController removeScriptMessageHandlerForName:HistoryShimName];
[_webView.configuration.userContentController removeScriptMessageHandlerForName:MessageHandlerName];
[_webView removeObserver:self forKeyPath:@"estimatedProgress"];
[_webView removeFromSuperview];
#if !TARGET_OS_OSX
_webView.scrollView.delegate = nil;
#endif // !TARGET_OS_OSX
_webView = nil;
if (_onContentProcessDidTerminate) {
NSMutableDictionary<NSString *, id> *event = [self baseEvent];
_onContentProcessDidTerminate(event);
}
}
[super removeFromSuperview];
}
#if !TARGET_OS_OSX
-(void)showFullScreenVideoStatusBars
{
#pragma clang diagnostic ignored "-Wdeprecated-declarations"
if (!_autoManageStatusBarEnabled) {
return;
}
_isFullScreenVideoOpen = YES;
RCTUnsafeExecuteOnMainQueueSync(^{
[RCTSharedApplication() setStatusBarStyle:self->_savedStatusBarStyle animated:YES];
});
#pragma clang diagnostic pop
}
-(void)hideFullScreenVideoStatusBars
{
#pragma clang diagnostic ignored "-Wdeprecated-declarations"
if (!_autoManageStatusBarEnabled) {
return;
}
_isFullScreenVideoOpen = NO;
RCTUnsafeExecuteOnMainQueueSync(^{
[RCTSharedApplication() setStatusBarHidden:self->_savedStatusBarHidden animated:YES];
[RCTSharedApplication() setStatusBarStyle:self->_savedStatusBarStyle animated:YES];
});
#pragma clang diagnostic pop
}
-(void)keyboardWillHide
{
keyboardTimer = [NSTimer scheduledTimerWithTimeInterval:0 target:self selector:@selector(keyboardDisplacementFix) userInfo:nil repeats:false];
[[NSRunLoop mainRunLoop] addTimer:keyboardTimer forMode:NSRunLoopCommonModes];
}
-(void)keyboardWillShow
{
if (keyboardTimer != nil) {
[keyboardTimer invalidate];
}
}
-(void)keyboardDisplacementFix
{
// Additional viewport checks to prevent unintentional scrolls
UIScrollView *scrollView = self.webView.scrollView;
double maxContentOffset = scrollView.contentSize.height - scrollView.frame.size.height;
if (maxContentOffset < 0) {
maxContentOffset = 0;
}
if (scrollView.contentOffset.y > maxContentOffset) {
// https://stackoverflow.com/a/9637807/824966
[UIView animateWithDuration:.25 animations:^{
scrollView.contentOffset = CGPointMake(0, maxContentOffset);
}];
}
}
#endif // !TARGET_OS_OSX
- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary<NSKeyValueChangeKey,id> *)change context:(void *)context{
if ([keyPath isEqual:@"estimatedProgress"] && object == self.webView) {
if(_onLoadingProgress){
NSMutableDictionary<NSString *, id> *event = [self baseEvent];
[event addEntriesFromDictionary:@{@"progress":[NSNumber numberWithDouble:self.webView.estimatedProgress]}];
_onLoadingProgress(event);
}
}else{
[super observeValueForKeyPath:keyPath ofObject:object change:change context:context];
}
}
#if !TARGET_OS_OSX
- (void)setBackgroundColor:(UIColor *)backgroundColor
#else
- (void)setBackgroundColor:(RCTUIColor *)backgroundColor
#endif // !TARGET_OS_OSX
{
_savedBackgroundColor = backgroundColor;
if (_webView == nil) {
return;
}
CGFloat alpha = CGColorGetAlpha(backgroundColor.CGColor);
BOOL opaque = (alpha == 1.0);
#if !TARGET_OS_OSX
self.opaque = _webView.opaque = opaque;
_webView.scrollView.backgroundColor = backgroundColor;
_webView.backgroundColor = backgroundColor;
#else
// https://stackoverflow.com/questions/40007753/macos-wkwebview-background-transparency
NSOperatingSystemVersion version = { 10, 12, 0 };
if ([[NSProcessInfo processInfo] isOperatingSystemAtLeastVersion:version]) {
[_webView setValue:@(opaque) forKey: @"drawsBackground"];
} else {
[_webView setValue:@(!opaque) forKey: @"drawsTransparentBackground"];
}
#endif // !TARGET_OS_OSX
}
#if defined(__IPHONE_OS_VERSION_MAX_ALLOWED) && __IPHONE_OS_VERSION_MAX_ALLOWED >= 110000 /* __IPHONE_11_0 */
- (void)setContentInsetAdjustmentBehavior:(UIScrollViewContentInsetAdjustmentBehavior)behavior
{
_savedContentInsetAdjustmentBehavior = behavior;
if (_webView == nil) {
return;
}
if ([_webView.scrollView respondsToSelector:@selector(setContentInsetAdjustmentBehavior:)]) {
CGPoint contentOffset = _webView.scrollView.contentOffset;
_webView.scrollView.contentInsetAdjustmentBehavior = behavior;
_webView.scrollView.contentOffset = contentOffset;
}
}
#endif
#if defined(__IPHONE_OS_VERSION_MAX_ALLOWED) && __IPHONE_OS_VERSION_MAX_ALLOWED >= 130000 /* __IPHONE_13_0 */
- (void)setAutomaticallyAdjustsScrollIndicatorInsets:(BOOL)automaticallyAdjustsScrollIndicatorInsets{
_savedAutomaticallyAdjustsScrollIndicatorInsets = automaticallyAdjustsScrollIndicatorInsets;
if (_webView == nil) {
return;
}
if ([_webView.scrollView respondsToSelector:@selector(setAutomaticallyAdjustsScrollIndicatorInsets:)]) {
_webView.scrollView.automaticallyAdjustsScrollIndicatorInsets = automaticallyAdjustsScrollIndicatorInsets;
}
}
#endif
/**
* This method is called whenever JavaScript running within the web view calls:
* - window.webkit.messageHandlers[MessageHandlerName].postMessage
*/
- (void)userContentController:(WKUserContentController *)userContentController
didReceiveScriptMessage:(WKScriptMessage *)message
{
if ([message.name isEqualToString:HistoryShimName]) {
if (_onLoadingFinish) {
NSMutableDictionary<NSString *, id> *event = [self baseEvent];
[event addEntriesFromDictionary: @{@"navigationType": message.body}];
_onLoadingFinish(event);
}
} else if ([message.name isEqualToString:MessageHandlerName]) {
if (_onMessage) {
NSMutableDictionary<NSString *, id> *event = [self baseEvent];
[event addEntriesFromDictionary: @{@"data": message.body}];
_onMessage(event);
}
}
}
- (void)setSource:(NSDictionary *)source
{
if (![_source isEqualToDictionary:source]) {
_source = [source copy];
if (_webView != nil) {
[self visitSource];
}
}
}
- (void)setAllowingReadAccessToURL:(NSString *)allowingReadAccessToURL
{
if (![_allowingReadAccessToURL isEqualToString:allowingReadAccessToURL]) {
_allowingReadAccessToURL = [allowingReadAccessToURL copy];
if (_webView != nil) {
[self visitSource];
}
}
}
#if !TARGET_OS_OSX
- (void)setContentInset:(UIEdgeInsets)contentInset
{
_contentInset = contentInset;
[RCTView autoAdjustInsetsForView:self
withScrollView:_webView.scrollView
updateOffset:NO];
}
- (void)refreshContentInset
{
[RCTView autoAdjustInsetsForView:self
withScrollView:_webView.scrollView
updateOffset:YES];
}
#endif // !TARGET_OS_OSX
- (void)visitSource
{
// Check for a static html source first
NSString *html = [RCTConvert NSString:_source[@"html"]];
if (html) {
NSURL *baseURL = [RCTConvert NSURL:_source[@"baseUrl"]];
if (!baseURL) {
baseURL = [NSURL URLWithString:@"about:blank"];
}
[_webView loadHTMLString:html baseURL:baseURL];
return;
}
//Add cookie for subsequent resource requests sent by page itself, if cookie was set in headers on WebView
NSString *headerCookie = [RCTConvert NSString:_source[@"headers"][@"cookie"]];
if(headerCookie) {
NSDictionary *headers = [NSDictionary dictionaryWithObjectsAndKeys:headerCookie,@"Set-Cookie",nil];
NSURL *urlString = [NSURL URLWithString:_source[@"uri"]];
NSArray *httpCookies = [NSHTTPCookie cookiesWithResponseHeaderFields:headers forURL:urlString];
for (NSHTTPCookie *httpCookie in httpCookies) {
[_webView.configuration.websiteDataStore.httpCookieStore setCookie:httpCookie completionHandler:nil];
}
}
NSURLRequest *request = [self requestForSource:_source];
// Because of the way React works, as pages redirect, we actually end up
// passing the redirect urls back here, so we ignore them if trying to load
// the same url. We'll expose a call to 'reload' to allow a user to load
// the existing page.
if ([request.URL isEqual:_webView.URL]) {
return;
}
if (!request.URL) {
// Clear the webview
[_webView loadHTMLString:@"" baseURL:nil];
return;
}
if (request.URL.host) {
[_webView loadRequest:request];
}
else {
NSURL* readAccessUrl = _allowingReadAccessToURL ? [RCTConvert NSURL:_allowingReadAccessToURL] : request.URL;
[_webView loadFileURL:request.URL allowingReadAccessToURL:readAccessUrl];
}
}
#if !TARGET_OS_OSX
-(void)setKeyboardDisplayRequiresUserAction:(BOOL)keyboardDisplayRequiresUserAction
{
if (_webView == nil) {
_savedKeyboardDisplayRequiresUserAction = keyboardDisplayRequiresUserAction;
return;
}
if (_savedKeyboardDisplayRequiresUserAction == true) {
return;
}
UIView* subview;
for (UIView* view in _webView.scrollView.subviews) {
if([[view.class description] hasPrefix:@"WK"])
subview = view;
}
if(subview == nil) return;
Class class = subview.class;
NSOperatingSystemVersion iOS_11_3_0 = (NSOperatingSystemVersion){11, 3, 0};
NSOperatingSystemVersion iOS_12_2_0 = (NSOperatingSystemVersion){12, 2, 0};
NSOperatingSystemVersion iOS_13_0_0 = (NSOperatingSystemVersion){13, 0, 0};
Method method;
IMP override;
if ([[NSProcessInfo processInfo] isOperatingSystemAtLeastVersion: iOS_13_0_0]) {
// iOS 13.0.0 - Future
SEL selector = sel_getUid("_elementDidFocus:userIsInteracting:blurPreviousNode:activityStateChanges:userObject:");
method = class_getInstanceMethod(class, selector);
IMP original = method_getImplementation(method);
override = imp_implementationWithBlock(^void(id me, void* arg0, BOOL arg1, BOOL arg2, BOOL arg3, id arg4) {
((void (*)(id, SEL, void*, BOOL, BOOL, BOOL, id))original)(me, selector, arg0, TRUE, arg2, arg3, arg4);
});
}
else if ([[NSProcessInfo processInfo] isOperatingSystemAtLeastVersion: iOS_12_2_0]) {
// iOS 12.2.0 - iOS 13.0.0
SEL selector = sel_getUid("_elementDidFocus:userIsInteracting:blurPreviousNode:changingActivityState:userObject:");
method = class_getInstanceMethod(class, selector);
IMP original = method_getImplementation(method);
override = imp_implementationWithBlock(^void(id me, void* arg0, BOOL arg1, BOOL arg2, BOOL arg3, id arg4) {
((void (*)(id, SEL, void*, BOOL, BOOL, BOOL, id))original)(me, selector, arg0, TRUE, arg2, arg3, arg4);
});
}
else if ([[NSProcessInfo processInfo] isOperatingSystemAtLeastVersion: iOS_11_3_0]) {
// iOS 11.3.0 - 12.2.0
SEL selector = sel_getUid("_startAssistingNode:userIsInteracting:blurPreviousNode:changingActivityState:userObject:");
method = class_getInstanceMethod(class, selector);
IMP original = method_getImplementation(method);
override = imp_implementationWithBlock(^void(id me, void* arg0, BOOL arg1, BOOL arg2, BOOL arg3, id arg4) {
((void (*)(id, SEL, void*, BOOL, BOOL, BOOL, id))original)(me, selector, arg0, TRUE, arg2, arg3, arg4);
});
} else {
// iOS 9.0 - 11.3.0
SEL selector = sel_getUid("_startAssistingNode:userIsInteracting:blurPreviousNode:userObject:");
method = class_getInstanceMethod(class, selector);
IMP original = method_getImplementation(method);
override = imp_implementationWithBlock(^void(id me, void* arg0, BOOL arg1, BOOL arg2, id arg3) {
((void (*)(id, SEL, void*, BOOL, BOOL, id))original)(me, selector, arg0, TRUE, arg2, arg3);
});
}
method_setImplementation(method, override);
}
-(void)setHideKeyboardAccessoryView:(BOOL)hideKeyboardAccessoryView
{
if (_webView == nil) {
_savedHideKeyboardAccessoryView = hideKeyboardAccessoryView;
return;
}
if (_savedHideKeyboardAccessoryView == false) {
return;
}
UIView* subview;
for (UIView* view in _webView.scrollView.subviews) {
if([[view.class description] hasPrefix:@"WK"])
subview = view;
}
if(subview == nil) return;
NSString* name = [NSString stringWithFormat:@"%@_SwizzleHelperWK", subview.class.superclass];
Class newClass = NSClassFromString(name);
if(newClass == nil)
{
newClass = objc_allocateClassPair(subview.class, [name cStringUsingEncoding:NSASCIIStringEncoding], 0);
if(!newClass) return;
Method method = class_getInstanceMethod([_SwizzleHelperWK class], @selector(inputAccessoryView));
class_addMethod(newClass, @selector(inputAccessoryView), method_getImplementation(method), method_getTypeEncoding(method));
objc_registerClassPair(newClass);
}
object_setClass(subview, newClass);
}
// UIScrollViewDelegate method
- (void)scrollViewWillBeginDragging:(UIScrollView *)scrollView
{
scrollView.decelerationRate = _decelerationRate;
}
#endif // !TARGET_OS_OSX
- (void)setScrollEnabled:(BOOL)scrollEnabled
{
_scrollEnabled = scrollEnabled;
#if !TARGET_OS_OSX
_webView.scrollView.scrollEnabled = scrollEnabled;
#endif // !TARGET_OS_OSX
}
#if !TARGET_OS_OSX
// UIScrollViewDelegate method
- (void)scrollViewDidScroll:(UIScrollView *)scrollView
{
// Don't allow scrolling the scrollView.
if (!_scrollEnabled) {
scrollView.bounds = _webView.bounds;
}
else if (_onScroll != nil) {
NSDictionary *event = @{
@"contentOffset": @{
@"x": @(scrollView.contentOffset.x),
@"y": @(scrollView.contentOffset.y)
},
@"contentInset": @{
@"top": @(scrollView.contentInset.top),
@"left": @(scrollView.contentInset.left),
@"bottom": @(scrollView.contentInset.bottom),
@"right": @(scrollView.contentInset.right)
},
@"contentSize": @{
@"width": @(scrollView.contentSize.width),
@"height": @(scrollView.contentSize.height)
},
@"layoutMeasurement": @{
@"width": @(scrollView.frame.size.width),
@"height": @(scrollView.frame.size.height)
},
@"zoomScale": @(scrollView.zoomScale ?: 1),
};
_onScroll(event);
}
}
- (void)setDirectionalLockEnabled:(BOOL)directionalLockEnabled
{
_directionalLockEnabled = directionalLockEnabled;
_webView.scrollView.directionalLockEnabled = directionalLockEnabled;
}
- (void)setShowsHorizontalScrollIndicator:(BOOL)showsHorizontalScrollIndicator
{
_showsHorizontalScrollIndicator = showsHorizontalScrollIndicator;
_webView.scrollView.showsHorizontalScrollIndicator = showsHorizontalScrollIndicator;
}
- (void)setShowsVerticalScrollIndicator:(BOOL)showsVerticalScrollIndicator
{
_showsVerticalScrollIndicator = showsVerticalScrollIndicator;
_webView.scrollView.showsVerticalScrollIndicator = showsVerticalScrollIndicator;
}
#endif // !TARGET_OS_OSX
- (void)postMessage:(NSString *)message
{
NSDictionary *eventInitDict = @{@"data": message};
NSString *source = [NSString
stringWithFormat:@"window.dispatchEvent(new MessageEvent('message', %@));",
RCTJSONStringify(eventInitDict, NULL)
];
[self injectJavaScript: source];
}
- (void)layoutSubviews
{
[super layoutSubviews];
// Ensure webview takes the position and dimensions of RNCWebView
_webView.frame = self.bounds;
#if !TARGET_OS_OSX
_webView.scrollView.contentInset = _contentInset;
#endif // !TARGET_OS_OSX
}
- (NSMutableDictionary<NSString *, id> *)baseEvent
{
NSDictionary *event = @{
@"url": _webView.URL.absoluteString ?: @"",
@"title": _webView.title ?: @"",
@"loading" : @(_webView.loading),
@"canGoBack": @(_webView.canGoBack),
@"canGoForward" : @(_webView.canGoForward)
};
return [[NSMutableDictionary alloc] initWithDictionary: event];
}
+ (void)setClientAuthenticationCredential:(nullable NSURLCredential*)credential {
clientAuthenticationCredential = credential;
}
+ (void)setCustomCertificatesForHost:(nullable NSDictionary*)certificates {
customCertificatesForHost = certificates;
}
- (void) webView:(WKWebView *)webView
didReceiveAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge
completionHandler:(void (^)(NSURLSessionAuthChallengeDisposition disposition, NSURLCredential * _Nullable))completionHandler
{
NSString* host = nil;
if (webView.URL != nil) {
host = webView.URL.host;
}
if ([[challenge protectionSpace] authenticationMethod] == NSURLAuthenticationMethodClientCertificate) {
completionHandler(NSURLSessionAuthChallengeUseCredential, clientAuthenticationCredential);
return;
}
if ([[challenge protectionSpace] serverTrust] != nil && customCertificatesForHost != nil && host != nil) {
SecCertificateRef localCertificate = (__bridge SecCertificateRef)([customCertificatesForHost objectForKey:host]);
if (localCertificate != nil) {
NSData *localCertificateData = (NSData*) CFBridgingRelease(SecCertificateCopyData(localCertificate));
SecTrustRef trust = [[challenge protectionSpace] serverTrust];
long count = SecTrustGetCertificateCount(trust);
for (long i = 0; i < count; i++) {
SecCertificateRef serverCertificate = SecTrustGetCertificateAtIndex(trust, i);
if (serverCertificate == nil) { continue; }
NSData *serverCertificateData = (NSData *) CFBridgingRelease(SecCertificateCopyData(serverCertificate));
if ([serverCertificateData isEqualToData:localCertificateData]) {
NSURLCredential *useCredential = [NSURLCredential credentialForTrust:trust];
if (challenge.sender != nil) {
[challenge.sender useCredential:useCredential forAuthenticationChallenge:challenge];
}
completionHandler(NSURLSessionAuthChallengeUseCredential, useCredential);
return;
}
}
}
}
completionHandler(NSURLSessionAuthChallengePerformDefaultHandling, nil);
}
#pragma mark - WKNavigationDelegate methods
/**
* alert
*/
- (void)webView:(WKWebView *)webView runJavaScriptAlertPanelWithMessage:(NSString *)message initiatedByFrame:(WKFrameInfo *)frame completionHandler:(void (^)(void))completionHandler
{
#if !TARGET_OS_OSX
UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"" message:message preferredStyle:UIAlertControllerStyleAlert];
[alert addAction:[UIAlertAction actionWithTitle:@"Ok" style:UIAlertActionStyleDefault handler:^(UIAlertAction *action) {
completionHandler();
}]];
[[self topViewController] presentViewController:alert animated:YES completion:NULL];
#else
NSAlert *alert = [[NSAlert alloc] init];
[alert setMessageText:message];
[alert beginSheetModalForWindow:[NSApp keyWindow] completionHandler:^(__unused NSModalResponse response){
completionHandler();
}];
#endif // !TARGET_OS_OSX
}
/**
* confirm
*/
- (void)webView:(WKWebView *)webView runJavaScriptConfirmPanelWithMessage:(NSString *)message initiatedByFrame:(WKFrameInfo *)frame completionHandler:(void (^)(BOOL))completionHandler{
#if !TARGET_OS_OSX
UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"" message:message preferredStyle:UIAlertControllerStyleAlert];
[alert addAction:[UIAlertAction actionWithTitle:@"Ok" style:UIAlertActionStyleDefault handler:^(UIAlertAction *action) {
completionHandler(YES);
}]];
[alert addAction:[UIAlertAction actionWithTitle:@"Cancel" style:UIAlertActionStyleCancel handler:^(UIAlertAction *action) {
completionHandler(NO);
}]];
[[self topViewController] presentViewController:alert animated:YES completion:NULL];
#else
NSAlert *alert = [[NSAlert alloc] init];
[alert setMessageText:message];
[alert addButtonWithTitle:NSLocalizedString(@"OK", @"OK button")];
[alert addButtonWithTitle:NSLocalizedString(@"Cancel", @"Cancel button")];
void (^callbacksHandlers)(NSModalResponse response) = ^void(NSModalResponse response) {
completionHandler(response == NSAlertFirstButtonReturn);
};
[alert beginSheetModalForWindow:[NSApp keyWindow] completionHandler:callbacksHandlers];
#endif // !TARGET_OS_OSX
}
/**
* prompt
*/
- (void)webView:(WKWebView *)webView runJavaScriptTextInputPanelWithPrompt:(NSString *)prompt defaultText:(NSString *)defaultText initiatedByFrame:(WKFrameInfo *)frame completionHandler:(void (^)(NSString *))completionHandler{
#if !TARGET_OS_OSX
UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"" message:prompt preferredStyle:UIAlertControllerStyleAlert];
[alert addTextFieldWithConfigurationHandler:^(UITextField *textField) {
textField.text = defaultText;
}];
UIAlertAction *okAction = [UIAlertAction actionWithTitle:@"Ok" style:UIAlertActionStyleDefault handler:^(UIAlertAction *action) {
completionHandler([[alert.textFields lastObject] text]);
}];
[alert addAction:okAction];
UIAlertAction *cancelAction = [UIAlertAction actionWithTitle:@"Cancel" style:UIAlertActionStyleCancel handler:^(UIAlertAction *action) {
completionHandler(nil);
}];
[alert addAction:cancelAction];
alert.preferredAction = okAction;
[[self topViewController] presentViewController:alert animated:YES completion:NULL];
#else
NSAlert *alert = [[NSAlert alloc] init];
[alert setMessageText:prompt];
const NSRect RCTSingleTextFieldFrame = NSMakeRect(0.0, 0.0, 275.0, 22.0);
NSTextField *textField = [[NSTextField alloc] initWithFrame:RCTSingleTextFieldFrame];
textField.cell.scrollable = YES;
if (@available(macOS 10.11, *)) {
textField.maximumNumberOfLines = 1;
}
textField.stringValue = defaultText;
[alert setAccessoryView:textField];
[alert addButtonWithTitle:NSLocalizedString(@"OK", @"OK button")];
[alert addButtonWithTitle:NSLocalizedString(@"Cancel", @"Cancel button")];
[alert beginSheetModalForWindow:[NSApp keyWindow] completionHandler:^(NSModalResponse response) {
if (response == NSAlertFirstButtonReturn) {
completionHandler([textField stringValue]);
} else {
completionHandler(nil);
}
}];
#endif // !TARGET_OS_OSX
}
#if !TARGET_OS_OSX
/**
* topViewController
*/
-(UIViewController *)topViewController{
return RCTPresentedViewController();
}
#endif // !TARGET_OS_OSX
/**
* Decides whether to allow or cancel a navigation.
* @see https://fburl.com/42r9fxob
*/
- (void) webView:(WKWebView *)webView
decidePolicyForNavigationAction:(WKNavigationAction *)navigationAction
decisionHandler:(void (^)(WKNavigationActionPolicy))decisionHandler
{
static NSDictionary<NSNumber *, NSString *> *navigationTypes;
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
navigationTypes = @{
@(WKNavigationTypeLinkActivated): @"click",
@(WKNavigationTypeFormSubmitted): @"formsubmit",
@(WKNavigationTypeBackForward): @"backforward",
@(WKNavigationTypeReload): @"reload",
@(WKNavigationTypeFormResubmitted): @"formresubmit",
@(WKNavigationTypeOther): @"other",
};
});
WKNavigationType navigationType = navigationAction.navigationType;
NSURLRequest *request = navigationAction.request;
BOOL isTopFrame = [request.URL isEqual:request.mainDocumentURL];
if (_onShouldStartLoadWithRequest) {
NSMutableDictionary<NSString *, id> *event = [self baseEvent];
[event addEntriesFromDictionary: @{
@"url": (request.URL).absoluteString,
@"mainDocumentURL": (request.mainDocumentURL).absoluteString,
@"navigationType": navigationTypes[@(navigationType)],
@"isTopFrame": @(isTopFrame)
}];
if (![self.delegate webView:self
shouldStartLoadForRequest:event
withCallback:_onShouldStartLoadWithRequest]) {
decisionHandler(WKNavigationActionPolicyCancel);
return;
}
}
if (_onLoadingStart) {
// We have this check to filter out iframe requests and whatnot
if (isTopFrame) {
NSMutableDictionary<NSString *, id> *event = [self baseEvent];
[event addEntriesFromDictionary: @{
@"url": (request.URL).absoluteString,
@"navigationType": navigationTypes[@(navigationType)]
}];
_onLoadingStart(event);
}
}
// Allow all navigation by default
decisionHandler(WKNavigationActionPolicyAllow);
}