fix(ios): webview onlink is now called only on link activated (#11295)

* fix(ios): webview onlink is now called only on link activated

* feat(ios): webview beforeload event main frame indication

* docs: update webview beforeload details

* fix(ios): updated doc

apidoc/Titanium/UI/WebView.yml

@@ -452,6 +452,12 @@ events:
         constants: Titanium.UI.iOS.WEBVIEW_NAVIGATIONTYPE_*
         platforms: [ipad, iphone]
 
+      - name: isMainFrame
+        summary: Indicate if the event was generated from the main page or an iframe.
+        type: Boolean
+        platforms: [ipad, iphone]
+        since: "9.0.0"
+
   - name: error
     summary: Fired when the web view cannot load the content.
     description: |

iphone/Classes/TiUIWebView.m

@@ -979,6 +979,18 @@ - (void)webView:(WKWebView *)webView runJavaScriptTextInputPanelWithPrompt:(NSSt
   [[TiApp app] showModalController:alertController animated:YES];
 }
 
+- (void)fireBeforeLoad:(nonnull WKNavigationAction *)navigationAction
+{
+  if ([[self proxy] _hasListeners:@"beforeload"]) {
+    [[self proxy] fireEvent:@"beforeload"
+                 withObject:@{
+                   @"url" : navigationAction.request.URL.absoluteString,
+                   @"navigationType" : @(navigationAction.navigationType),
+                   @"isMainFrame" : NUMBOOL(navigationAction.targetFrame.isMainFrame),
+                 }];
+  }
+}
+
 - (void)webView:(WKWebView *)webView decidePolicyForNavigationAction:(nonnull WKNavigationAction *)navigationAction decisionHandler:(nonnull void (^)(WKNavigationActionPolicy))decisionHandler
 {
   if (_isViewDetached) {
@@ -1008,20 +1020,13 @@ - (void)webView:(WKWebView *)webView decidePolicyForNavigationAction:(nonnull WK
     }
   }
 
-  if ([[self proxy] _hasListeners:@"beforeload"]) {
-    [[self proxy] fireEvent:@"beforeload"
-                 withObject:@{
-                   @"url" : navigationAction.request.URL.absoluteString,
-                   @"navigationType" : @(navigationAction.navigationType)
-                 }];
-  }
-
   // Use "onlink" callback property to decide the navigation policy
   KrollWrapper *onLink = [[self proxy] valueForKey:@"onlink"];
-  if (onLink != nil) {
+  if (onLink != nil && navigationAction.navigationType == WKNavigationTypeLinkActivated) {
     JSValueRef functionResult = [onLink executeWithArguments:@[ @{ @"url" : navigationAction.request.URL.absoluteString } ]];
     if (functionResult != NULL && JSValueIsBoolean([onLink.bridge.krollContext context], functionResult)) {
       if (JSValueToBoolean([onLink.bridge.krollContext context], functionResult)) {
+        [self fireBeforeLoad:navigationAction];
         decisionHandler(WKNavigationActionPolicyAllow);
       } else {
         decisionHandler(WKNavigationActionPolicyCancel);
@@ -1030,6 +1035,8 @@ - (void)webView:(WKWebView *)webView decidePolicyForNavigationAction:(nonnull WK
     }
   }
 
+  [self fireBeforeLoad:navigationAction];
+
   NSString *scheme = [navigationAction.request.URL.scheme lowercaseString];
 
   if ([allowedURLSchemes containsObject:navigationAction.request.URL.scheme]) {