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//
// WKWebViewJavascriptBridge.m
//
// Created by @LokiMeyburg on 10/15/14.
// Copyright (c) 2014 @LokiMeyburg. All rights reserved.
//
#import "WKWebViewJavascriptBridge.h"
#if defined(supportsWKWebKit)
@implementation WKWebViewJavascriptBridge {
WKWebView* _webView;
id<WKNavigationDelegate> _webViewDelegate;
long _uniqueId;
WebViewJavascriptBridgeBase *_base;
}
/* API
*****/
+ (void)enableLogging { [WebViewJavascriptBridgeBase enableLogging]; }
+ (instancetype)bridgeForWebView:(WKWebView*)webView {
WKWebViewJavascriptBridge* bridge = [[self alloc] init];
[bridge _setupInstance:webView];
[bridge reset];
return bridge;
}
- (void)send:(id)data {
[self send:data responseCallback:nil];
}
- (void)send:(id)data responseCallback:(WVJBResponseCallback)responseCallback {
[_base sendData:data responseCallback:responseCallback handlerName:nil];
}
- (void)callHandler:(NSString *)handlerName {
[self callHandler:handlerName data:nil responseCallback:nil];
}
- (void)callHandler:(NSString *)handlerName data:(id)data {
[self callHandler:handlerName data:data responseCallback:nil];
}
- (void)callHandler:(NSString *)handlerName data:(id)data responseCallback:(WVJBResponseCallback)responseCallback {
[_base sendData:data responseCallback:responseCallback handlerName:handlerName];
}
- (void)registerHandler:(NSString *)handlerName handler:(WVJBHandler)handler {
_base.messageHandlers[handlerName] = [handler copy];
}
- (void)reset {
[_base reset];
}
- (void)setWebViewDelegate:(id<WKNavigationDelegate>)webViewDelegate {
_webViewDelegate = webViewDelegate;
}
/* Internals
***********/
- (void)dealloc {
_base = nil;
_webView = nil;
_webViewDelegate = nil;
_webView.navigationDelegate = nil;
}
/* WKWebView Specific Internals
******************************/
- (void) _setupInstance:(WKWebView*)webView {
_webView = webView;
_webView.navigationDelegate = self;
_base = [[WebViewJavascriptBridgeBase alloc] init];
_base.delegate = self;
}
- (void)WKFlushMessageQueue {
[_webView evaluateJavaScript:[_base webViewJavascriptFetchQueyCommand] completionHandler:^(NSString* result, NSError* error) {
if (error != nil) {
NSLog(@"WebViewJavascriptBridge: WARNING: Error when trying to fetch data from WKWebView: %@", error);
}
[_base flushMessageQueue:result];
}];
}
- (void)webView:(WKWebView *)webView didFinishNavigation:(WKNavigation *)navigation
{
if (webView != _webView) { return; }
__strong typeof(_webViewDelegate) strongDelegate = _webViewDelegate;
if (strongDelegate && [strongDelegate respondsToSelector:@selector(webView:didFinishNavigation:)]) {
[strongDelegate webView:webView didFinishNavigation:navigation];
}
}
- (void)webView:(WKWebView *)webView
decidePolicyForNavigationAction:(WKNavigationAction *)navigationAction
decisionHandler:(void (^)(WKNavigationActionPolicy))decisionHandler {
if (webView != _webView) { return; }
NSURL *url = navigationAction.request.URL;
__strong typeof(_webViewDelegate) strongDelegate = _webViewDelegate;
if ([_base isCorrectProcotocolScheme:url]) {
if ([_base isBridgeLoadedURL:url]) {
[_base injectJavascriptFile];
} else if ([_base isQueueMessageURL:url]) {
[self WKFlushMessageQueue];
} else {
[_base logUnkownMessage:url];
}
decisionHandler(WKNavigationActionPolicyCancel);
}
if (strongDelegate && [strongDelegate respondsToSelector:@selector(webView:decidePolicyForNavigationAction:decisionHandler:)]) {
[_webViewDelegate webView:webView decidePolicyForNavigationAction:navigationAction decisionHandler:decisionHandler];
} else {
decisionHandler(WKNavigationActionPolicyAllow);
}
}
- (void)webView:(WKWebView *)webView didStartProvisionalNavigation:(WKNavigation *)navigation {
if (webView != _webView) { return; }
__strong typeof(_webViewDelegate) strongDelegate = _webViewDelegate;
if (strongDelegate && [strongDelegate respondsToSelector:@selector(webView:didStartProvisionalNavigation:)]) {
[strongDelegate webView:webView didStartProvisionalNavigation:navigation];
}
}
- (void)webView:(WKWebView *)webView
didFailNavigation:(WKNavigation *)navigation
withError:(NSError *)error {
if (webView != _webView) { return; }
__strong typeof(_webViewDelegate) strongDelegate = _webViewDelegate;
if (strongDelegate && [strongDelegate respondsToSelector:@selector(webView:didFailNavigation:withError:)]) {
[strongDelegate webView:webView didFailNavigation:navigation withError:error];
}
}
- (void)webView:(WKWebView *)webView didFailProvisionalNavigation:(WKNavigation *)navigation withError:(NSError *)error {
if (webView != _webView) { return; }
__strong typeof(_webViewDelegate) strongDelegate = _webViewDelegate;
if (strongDelegate && [strongDelegate respondsToSelector:@selector(webView:didFailProvisionalNavigation:withError:)]) {
[strongDelegate webView:webView didFailProvisionalNavigation:navigation withError:error];
}
}
- (NSString*) _evaluateJavascript:(NSString*)javascriptCommand
{
[_webView evaluateJavaScript:javascriptCommand completionHandler:nil];
return NULL;
}
@end
#endif