[CB-6884] [WKWebView][iOS 8] Support new Cordova bridge

• Type: Sub-task
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Component/s: cordova-ios, cordova-js

Environment

iOS 8 beta 2

• Assignee: Shazron Abdullah
• Reporter: Shazron Abdullah
• Created: 05/Jun/14 22:09
• Updated: 23/Aug/18 07:18
• Resolved: 21/Jul/14 18:36

Description

https://developer.apple.com/library/prerelease/ios/releasenotes/General/RN-iOSSDK-8.0/index.html

WKUserContentController - add a script message handler with name "cordova":
https://developer.apple.com/library/prerelease/ios/documentation/WebKit/Reference/WKUserContentController_Ref/index.html#//apple_ref/swift/cl/WKUserContentController

The WKUserContentController is associated with a WKWebViewConfiguration which is initialized with a WKWebView.

WKUserContentController* userContentController = [[WKUserContentController alloc] init];
// scriptMessageHandler is the object that conforms to the WKScriptMessageHandler protocol
// see https://developer.apple.com/library/prerelease/ios/documentation/WebKit/Reference/WKScriptMessageHandler_Ref/index.html#//apple_ref/swift/intf/WKScriptMessageHandler
[userContentController addScriptMessageHandler:scriptMessageHandler name:@"cordova"];

In JavaScript, you would call into Objective-C thus:

var command = { callbackId: "blabla23", service:"Camera", action: "takePicture", actionArgs: [ 1, 2, 3 ] };
window.webkit.messageHandlers.cordova.postMessage(command);

In the object that conforms to the WKScriptMessageHandler protocol:

- (void)userContentController:(WKUserContentController *)userContentController   didReceiveScriptMessage:(WKScriptMessage *)message
{
    if (![message.name isEqualToString:@"cordova"]) {
        return;
    }
    NSDictionary* command = message.body;
    // TODO: get the callbackId, service, action, actionArgs keys and create a CDVInvokedUrlCommand, and dispatch it
}

Issue Links

• depends upon: CB-7047 [WKWebView] Support config.xml preferences
• depends upon: CB-7050 [WKWebView] Support loadHTMLString
• depends upon: CB-7051 [WKWebView][iOS 8] Support evaluateJavaScript:completionHandler:
• is a clone of: CB-6863 Default Cordova bridge broken due to replacing window.navigator (iOS 8)