private static NativeClassDefinition CreateSchemeHandler()
{
// note: WKURLSchemeHandler is not available at runtime and returns null, it's kept for completeness
var definition = NativeClassDefinition.FromObject(
"SpiderEyeSchemeHandler",
WebKit.GetProtocol("WKURLSchemeHandler"));
definition.AddMethod <SchemeHandlerDelegate>(
"webView:startURLSchemeTask:",
"v@:@@",
(self, op, view, schemeTask) =>
{
var instance = definition.GetParent <CocoaWebview>(self);
UriSchemeStartCallback(instance, schemeTask);
});
definition.AddMethod <SchemeHandlerDelegate>(
"webView:stopURLSchemeTask:",
"v@:@@",
(self, op, view, schemeTask) => { /* don't think anything needs to be done here */ });
definition.FinishDeclaration();
return(definition);
}
private static NativeClassDefinition CreateCallbackClass()
{
var definition = NativeClassDefinition.FromObject(
"SpiderEyeWebviewCallbacks",
WebKit.GetProtocol("WKNavigationDelegate"),
// note: WKScriptMessageHandler is not available at runtime and returns null
WebKit.GetProtocol("WKScriptMessageHandler"));
definition.AddMethod <NavigationDecideDelegate>(
"webView:decidePolicyForNavigationAction:decisionHandler:",
"v@:@@@",
(self, op, view, navigationAction, decisionHandler) =>
{
var instance = definition.GetParent <CocoaWebview>(self);
if (instance == null)
{
return;
}
var args = new NavigatingEventArgs(instance.Uri);
instance.Navigating?.Invoke(instance, args);
var block = Marshal.PtrToStructure <NSBlock.BlockLiteral>(decisionHandler);
var callback = Marshal.GetDelegateForFunctionPointer <NavigationDecisionDelegate>(block.Invoke);
callback(decisionHandler, args.Cancel ? IntPtr.Zero : new IntPtr(1));
});
definition.AddMethod <ObserveValueDelegate>(
"observeValueForKeyPath:ofObject:change:context:",
"v@:@@@@",
(self, op, keyPath, obj, change, context) =>
{
var instance = definition.GetParent <CocoaWebview>(self);
if (instance != null)
{
ObservedValueChanged(instance, keyPath);
}
});
definition.AddMethod <ScriptCallbackDelegate>(
"userContentController:didReceiveScriptMessage:",
"v@:@@",
(self, op, notification, message) =>
{
var instance = definition.GetParent <CocoaWebview>(self);
if (instance != null)
{
ScriptCallback(instance, message);
}
});
definition.FinishDeclaration();
return(definition);
}