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1 files changed, 480 insertions, 0 deletions

diff --git a/StoneIsland/plugins/cordova-plugin-wkwebview-engine/src/ios/CDVWKWebViewEngine.m b/StoneIsland/plugins/cordova-plugin-wkwebview-engine/src/ios/CDVWKWebViewEngine.m
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@@ -0,0 +1,480 @@
+/*
+ Licensed to the Apache Software Foundation (ASF) under one
+ or more contributor license agreements.  See the NOTICE file
+ distributed with this work for additional information
+ regarding copyright ownership.  The ASF licenses this file
+ to you under the Apache License, Version 2.0 (the
+ "License"); you may not use this file except in compliance
+ with the License.  You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing,
+ software distributed under the License is distributed on an
+ "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ KIND, either express or implied.  See the License for the
+ specific language governing permissions and limitations
+ under the License.
+ */
+
+#import "CDVWKWebViewEngine.h"
+#import "CDVWKWebViewUIDelegate.h"
+#import "CDVWKProcessPoolFactory.h"
+#import <Cordova/NSDictionary+CordovaPreferences.h>
+
+#import <objc/message.h>
+
+#define CDV_BRIDGE_NAME @"cordova"
+#define CDV_WKWEBVIEW_FILE_URL_LOAD_SELECTOR @"loadFileURL:allowingReadAccessToURL:"
+
+@interface CDVWKWeakScriptMessageHandler : NSObject <WKScriptMessageHandler>
+
+@property (nonatomic, weak, readonly) id<WKScriptMessageHandler>scriptMessageHandler;
+
+- (instancetype)initWithScriptMessageHandler:(id<WKScriptMessageHandler>)scriptMessageHandler;
+
+@end
+
+
+@interface CDVWKWebViewEngine ()
+
+@property (nonatomic, strong, readwrite) UIView* engineWebView;
+@property (nonatomic, strong, readwrite) id <WKUIDelegate> uiDelegate;
+@property (nonatomic, weak) id <WKScriptMessageHandler> weakScriptMessageHandler;
+
+@end
+
+// see forwardingTargetForSelector: selector comment for the reason for this pragma
+#pragma clang diagnostic ignored "-Wprotocol"
+
+@implementation CDVWKWebViewEngine
+
+@synthesize engineWebView = _engineWebView;
+
+- (instancetype)initWithFrame:(CGRect)frame
+{
+    self = [super init];
+    if (self) {
+        if (NSClassFromString(@"WKWebView") == nil) {
+            return nil;
+        }
+
+        self.engineWebView = [[WKWebView alloc] initWithFrame:frame];
+    }
+
+    return self;
+}
+
+- (WKWebViewConfiguration*) createConfigurationFromSettings:(NSDictionary*)settings
+{
+    WKWebViewConfiguration* configuration = [[WKWebViewConfiguration alloc] init];
+    configuration.processPool = [[CDVWKProcessPoolFactory sharedFactory] sharedProcessPool];
+    if (settings == nil) {
+        return configuration;
+    }
+
+    configuration.allowsInlineMediaPlayback = [settings cordovaBoolSettingForKey:@"AllowInlineMediaPlayback" defaultValue:NO];
+    configuration.mediaPlaybackRequiresUserAction = [settings cordovaBoolSettingForKey:@"MediaPlaybackRequiresUserAction" defaultValue:YES];
+    configuration.suppressesIncrementalRendering = [settings cordovaBoolSettingForKey:@"SuppressesIncrementalRendering" defaultValue:NO];
+    configuration.mediaPlaybackAllowsAirPlay = [settings cordovaBoolSettingForKey:@"MediaPlaybackAllowsAirPlay" defaultValue:YES];
+    return configuration;
+}
+
+- (void)pluginInitialize
+{
+    // viewController would be available now. we attempt to set all possible delegates to it, by default
+    NSDictionary* settings = self.commandDelegate.settings;
+
+    self.uiDelegate = [[CDVWKWebViewUIDelegate alloc] initWithTitle:[[NSBundle mainBundle] objectForInfoDictionaryKey:@"CFBundleDisplayName"]];
+
+    CDVWKWeakScriptMessageHandler *weakScriptMessageHandler = [[CDVWKWeakScriptMessageHandler alloc] initWithScriptMessageHandler:self];
+
+    WKUserContentController* userContentController = [[WKUserContentController alloc] init];
+    [userContentController addScriptMessageHandler:weakScriptMessageHandler name:CDV_BRIDGE_NAME];
+
+    WKWebViewConfiguration* configuration = [self createConfigurationFromSettings:settings];
+    configuration.userContentController = userContentController;
+
+    // re-create WKWebView, since we need to update configuration
+    WKWebView* wkWebView = [[WKWebView alloc] initWithFrame:self.engineWebView.frame configuration:configuration];
+    wkWebView.UIDelegate = self.uiDelegate;
+    self.engineWebView = wkWebView;
+
+    if (IsAtLeastiOSVersion(@"9.0") && [self.viewController isKindOfClass:[CDVViewController class]]) {
+        wkWebView.customUserAgent = ((CDVViewController*) self.viewController).userAgent;
+    }
+
+    if ([self.viewController conformsToProtocol:@protocol(WKUIDelegate)]) {
+        wkWebView.UIDelegate = (id <WKUIDelegate>)self.viewController;
+    }
+
+    if ([self.viewController conformsToProtocol:@protocol(WKNavigationDelegate)]) {
+        wkWebView.navigationDelegate = (id <WKNavigationDelegate>)self.viewController;
+    } else {
+        wkWebView.navigationDelegate = (id <WKNavigationDelegate>)self;
+    }
+
+    if ([self.viewController conformsToProtocol:@protocol(WKScriptMessageHandler)]) {
+        [wkWebView.configuration.userContentController addScriptMessageHandler:(id < WKScriptMessageHandler >)self.viewController name:CDV_BRIDGE_NAME];
+    }
+
+    [self updateSettings:settings];
+
+    // check if content thread has died on resume
+    NSLog(@"%@", @"CDVWKWebViewEngine will reload WKWebView if required on resume");
+    [[NSNotificationCenter defaultCenter]
+        addObserver:self
+           selector:@selector(onAppWillEnterForeground:)
+               name:UIApplicationWillEnterForegroundNotification object:nil];
+
+    NSLog(@"Using WKWebView");
+
+    [self addURLObserver];
+}
+
+- (void)onReset {
+    [self addURLObserver];
+}
+
+static void * KVOContext = &KVOContext;
+
+- (void)addURLObserver {
+    if(!IsAtLeastiOSVersion(@"9.0")){
+        [self.webView addObserver:self forKeyPath:@"URL" options:0 context:KVOContext];
+    }
+}
+
+- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary<NSString *,id> *)change context:(void *)context
+{
+    if (context == KVOContext) {
+        if (object == [self webView] && [keyPath isEqualToString: @"URL"] && [object valueForKeyPath:keyPath] == nil){
+            NSLog(@"URL is nil. Reloading WKWebView");
+            [(WKWebView*)_engineWebView reload];
+        }
+    } else {
+        [super observeValueForKeyPath:keyPath ofObject:object change:change context:context];
+    }
+}
+
+- (void) onAppWillEnterForeground:(NSNotification*)notification {
+    if ([self shouldReloadWebView]) {
+        NSLog(@"%@", @"CDVWKWebViewEngine reloading!");
+        [(WKWebView*)_engineWebView reload];
+    }
+}
+
+- (BOOL)shouldReloadWebView
+{
+    WKWebView* wkWebView = (WKWebView*)_engineWebView;
+    return [self shouldReloadWebView:wkWebView.URL title:wkWebView.title];
+}
+
+- (BOOL)shouldReloadWebView:(NSURL*)location title:(NSString*)title
+{
+    BOOL title_is_nil = (title == nil);
+    BOOL location_is_blank = [[location absoluteString] isEqualToString:@"about:blank"];
+    
+    BOOL reload = (title_is_nil || location_is_blank);
+    
+#ifdef DEBUG
+    NSLog(@"%@", @"CDVWKWebViewEngine shouldReloadWebView::");
+    NSLog(@"CDVWKWebViewEngine shouldReloadWebView title: %@", title);
+    NSLog(@"CDVWKWebViewEngine shouldReloadWebView location: %@", [location absoluteString]);
+    NSLog(@"CDVWKWebViewEngine shouldReloadWebView reload: %u", reload);
+#endif
+    
+    return reload;
+}
+
+
+- (id)loadRequest:(NSURLRequest*)request
+{
+    if ([self canLoadRequest:request]) { // can load, differentiate between file urls and other schemes
+        if (request.URL.fileURL) {
+            SEL wk_sel = NSSelectorFromString(CDV_WKWEBVIEW_FILE_URL_LOAD_SELECTOR);
+            NSURL* readAccessUrl = [request.URL URLByDeletingLastPathComponent];
+            return ((id (*)(id, SEL, id, id))objc_msgSend)(_engineWebView, wk_sel, request.URL, readAccessUrl);
+        } else {
+            return [(WKWebView*)_engineWebView loadRequest:request];
+        }
+    } else { // can't load, print out error
+        NSString* errorHtml = [NSString stringWithFormat:
+                               @"<!doctype html>"
+                               @"<title>Error</title>"
+                               @"<div style='font-size:2em'>"
+                               @"   <p>The WebView engine '%@' is unable to load the request: %@</p>"
+                               @"   <p>Most likely the cause of the error is that the loading of file urls is not supported in iOS %@.</p>"
+                               @"</div>",
+                               NSStringFromClass([self class]),
+                               [request.URL description],
+                               [[UIDevice currentDevice] systemVersion]
+                               ];
+        return [self loadHTMLString:errorHtml baseURL:nil];
+    }
+}
+
+- (id)loadHTMLString:(NSString*)string baseURL:(NSURL*)baseURL
+{
+    return [(WKWebView*)_engineWebView loadHTMLString:string baseURL:baseURL];
+}
+
+- (NSURL*) URL
+{
+    return [(WKWebView*)_engineWebView URL];
+}
+
+- (BOOL) canLoadRequest:(NSURLRequest*)request
+{
+    // See: https://issues.apache.org/jira/browse/CB-9636
+    SEL wk_sel = NSSelectorFromString(CDV_WKWEBVIEW_FILE_URL_LOAD_SELECTOR);
+
+    // if it's a file URL, check whether WKWebView has the selector (which is in iOS 9 and up only)
+    if (request.URL.fileURL) {
+        return [_engineWebView respondsToSelector:wk_sel];
+    } else {
+        return YES;
+    }
+}
+
+- (void)updateSettings:(NSDictionary*)settings
+{
+    WKWebView* wkWebView = (WKWebView*)_engineWebView;
+
+    wkWebView.configuration.preferences.minimumFontSize = [settings cordovaFloatSettingForKey:@"MinimumFontSize" defaultValue:0.0];
+
+    /*
+     wkWebView.configuration.preferences.javaScriptEnabled = [settings cordovaBoolSettingForKey:@"JavaScriptEnabled" default:YES];
+     wkWebView.configuration.preferences.javaScriptCanOpenWindowsAutomatically = [settings cordovaBoolSettingForKey:@"JavaScriptCanOpenWindowsAutomatically" default:NO];
+     */
+
+    // By default, DisallowOverscroll is false (thus bounce is allowed)
+    BOOL bounceAllowed = !([settings cordovaBoolSettingForKey:@"DisallowOverscroll" defaultValue:NO]);
+
+    // prevent webView from bouncing
+    if (!bounceAllowed) {
+        if ([wkWebView respondsToSelector:@selector(scrollView)]) {
+            ((UIScrollView*)[wkWebView scrollView]).bounces = NO;
+        } else {
+            for (id subview in wkWebView.subviews) {
+                if ([[subview class] isSubclassOfClass:[UIScrollView class]]) {
+                    ((UIScrollView*)subview).bounces = NO;
+                }
+            }
+        }
+    }
+
+    NSString* decelerationSetting = [settings cordovaSettingForKey:@"WKWebViewDecelerationSpeed"];
+    if (!decelerationSetting) {
+        // Fallback to the UIWebView-named preference
+        decelerationSetting = [settings cordovaSettingForKey:@"UIWebViewDecelerationSpeed"];
+    }
+
+    if (![@"fast" isEqualToString:decelerationSetting]) {
+        [wkWebView.scrollView setDecelerationRate:UIScrollViewDecelerationRateNormal];
+    } else {
+        [wkWebView.scrollView setDecelerationRate:UIScrollViewDecelerationRateFast];
+    }
+
+    wkWebView.allowsBackForwardNavigationGestures = [settings cordovaBoolSettingForKey:@"AllowBackForwardNavigationGestures" defaultValue:NO];
+}
+
+- (void)updateWithInfo:(NSDictionary*)info
+{
+    NSDictionary* scriptMessageHandlers = [info objectForKey:kCDVWebViewEngineScriptMessageHandlers];
+    NSDictionary* settings = [info objectForKey:kCDVWebViewEngineWebViewPreferences];
+    id navigationDelegate = [info objectForKey:kCDVWebViewEngineWKNavigationDelegate];
+    id uiDelegate = [info objectForKey:kCDVWebViewEngineWKUIDelegate];
+
+    WKWebView* wkWebView = (WKWebView*)_engineWebView;
+
+    if (scriptMessageHandlers && [scriptMessageHandlers isKindOfClass:[NSDictionary class]]) {
+        NSArray* allKeys = [scriptMessageHandlers allKeys];
+
+        for (NSString* key in allKeys) {
+            id object = [scriptMessageHandlers objectForKey:key];
+            if ([object conformsToProtocol:@protocol(WKScriptMessageHandler)]) {
+                [wkWebView.configuration.userContentController addScriptMessageHandler:object name:key];
+            }
+        }
+    }
+
+    if (navigationDelegate && [navigationDelegate conformsToProtocol:@protocol(WKNavigationDelegate)]) {
+        wkWebView.navigationDelegate = navigationDelegate;
+    }
+
+    if (uiDelegate && [uiDelegate conformsToProtocol:@protocol(WKUIDelegate)]) {
+        wkWebView.UIDelegate = uiDelegate;
+    }
+
+    if (settings && [settings isKindOfClass:[NSDictionary class]]) {
+        [self updateSettings:settings];
+    }
+}
+
+// This forwards the methods that are in the header that are not implemented here.
+// Both WKWebView and UIWebView implement the below:
+//     loadHTMLString:baseURL:
+//     loadRequest:
+- (id)forwardingTargetForSelector:(SEL)aSelector
+{
+    return _engineWebView;
+}
+
+- (UIView*)webView
+{
+    return self.engineWebView;
+}
+
+#pragma mark WKScriptMessageHandler implementation
+
+- (void)userContentController:(WKUserContentController*)userContentController didReceiveScriptMessage:(WKScriptMessage*)message
+{
+    if (![message.name isEqualToString:CDV_BRIDGE_NAME]) {
+        return;
+    }
+
+    CDVViewController* vc = (CDVViewController*)self.viewController;
+
+    NSArray* jsonEntry = message.body; // NSString:callbackId, NSString:service, NSString:action, NSArray:args
+    CDVInvokedUrlCommand* command = [CDVInvokedUrlCommand commandFromJson:jsonEntry];
+    CDV_EXEC_LOG(@"Exec(%@): Calling %@.%@", command.callbackId, command.className, command.methodName);
+
+    if (![vc.commandQueue execute:command]) {
+#ifdef DEBUG
+        NSError* error = nil;
+        NSString* commandJson = nil;
+        NSData* jsonData = [NSJSONSerialization dataWithJSONObject:jsonEntry
+                                                           options:0
+                                                             error:&error];
+
+        if (error == nil) {
+            commandJson = [[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding];
+        }
+
+            static NSUInteger maxLogLength = 1024;
+            NSString* commandString = ([commandJson length] > maxLogLength) ?
+                [NSString stringWithFormat : @"%@[...]", [commandJson substringToIndex:maxLogLength]] :
+                commandJson;
+
+            NSLog(@"FAILED pluginJSON = %@", commandString);
+#endif
+    }
+}
+
+#pragma mark WKNavigationDelegate implementation
+
+- (void)webView:(WKWebView*)webView didStartProvisionalNavigation:(WKNavigation*)navigation
+{
+    [[NSNotificationCenter defaultCenter] postNotification:[NSNotification notificationWithName:CDVPluginResetNotification object:webView]];
+}
+
+- (void)webView:(WKWebView*)webView didFinishNavigation:(WKNavigation*)navigation
+{
+    CDVViewController* vc = (CDVViewController*)self.viewController;
+    [CDVUserAgentUtil releaseLock:vc.userAgentLockToken];
+
+    [[NSNotificationCenter defaultCenter] postNotification:[NSNotification notificationWithName:CDVPageDidLoadNotification object:webView]];
+}
+
+- (void)webView:(WKWebView*)theWebView didFailProvisionalNavigation:(WKNavigation*)navigation withError:(NSError*)error
+{
+    [self webView:theWebView didFailNavigation:navigation withError:error];
+}
+
+- (void)webView:(WKWebView*)theWebView didFailNavigation:(WKNavigation*)navigation withError:(NSError*)error
+{
+    CDVViewController* vc = (CDVViewController*)self.viewController;
+    [CDVUserAgentUtil releaseLock:vc.userAgentLockToken];
+
+    NSString* message = [NSString stringWithFormat:@"Failed to load webpage with error: %@", [error localizedDescription]];
+    NSLog(@"%@", message);
+
+    NSURL* errorUrl = vc.errorURL;
+    if (errorUrl) {
+        errorUrl = [NSURL URLWithString:[NSString stringWithFormat:@"?error=%@", [message stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]] relativeToURL:errorUrl];
+        NSLog(@"%@", [errorUrl absoluteString]);
+        [theWebView loadRequest:[NSURLRequest requestWithURL:errorUrl]];
+    }
+}
+
+- (void)webViewWebContentProcessDidTerminate:(WKWebView *)webView
+{
+    [webView reload];
+}
+
+- (BOOL)defaultResourcePolicyForURL:(NSURL*)url
+{
+    // all file:// urls are allowed
+    if ([url isFileURL]) {
+        return YES;
+    }
+
+    return NO;
+}
+
+- (void) webView: (WKWebView *) webView decidePolicyForNavigationAction: (WKNavigationAction*) navigationAction decisionHandler: (void (^)(WKNavigationActionPolicy)) decisionHandler
+{
+    NSURL* url = [navigationAction.request URL];
+    CDVViewController* vc = (CDVViewController*)self.viewController;
+
+    /*
+     * Give plugins the chance to handle the url
+     */
+    BOOL anyPluginsResponded = NO;
+    BOOL shouldAllowRequest = NO;
+
+    for (NSString* pluginName in vc.pluginObjects) {
+        CDVPlugin* plugin = [vc.pluginObjects objectForKey:pluginName];
+        SEL selector = NSSelectorFromString(@"shouldOverrideLoadWithRequest:navigationType:");
+        if ([plugin respondsToSelector:selector]) {
+            anyPluginsResponded = YES;
+            // https://issues.apache.org/jira/browse/CB-12497
+            int navType = (int)navigationAction.navigationType;
+            if (WKNavigationTypeOther == navigationAction.navigationType) {
+                navType = (int)UIWebViewNavigationTypeOther;
+            }
+            shouldAllowRequest = (((BOOL (*)(id, SEL, id, int))objc_msgSend)(plugin, selector, navigationAction.request, navType));
+            if (!shouldAllowRequest) {
+                break;
+            }
+        }
+    }
+
+    if (anyPluginsResponded) {
+        return decisionHandler(shouldAllowRequest);
+    }
+
+    /*
+     * Handle all other types of urls (tel:, sms:), and requests to load a url in the main webview.
+     */
+    BOOL shouldAllowNavigation = [self defaultResourcePolicyForURL:url];
+    if (shouldAllowNavigation) {
+        return decisionHandler(YES);
+    } else {
+        [[NSNotificationCenter defaultCenter] postNotification:[NSNotification notificationWithName:CDVPluginHandleOpenURLNotification object:url]];
+    }
+
+    return decisionHandler(NO);
+}
+
+@end
+
+#pragma mark - CDVWKWeakScriptMessageHandler
+
+@implementation CDVWKWeakScriptMessageHandler
+
+- (instancetype)initWithScriptMessageHandler:(id<WKScriptMessageHandler>)scriptMessageHandler
+{
+    self = [super init];
+    if (self) {
+        _scriptMessageHandler = scriptMessageHandler;
+    }
+    return self;
+}
+
+- (void)userContentController:(WKUserContentController *)userContentController didReceiveScriptMessage:(WKScriptMessage *)message
+{
+    [self.scriptMessageHandler userContentController:userContentController didReceiveScriptMessage:message];
+}
+
+@end