Handle OpenURLs when application is already active

Change-Id: Ice70e2f999ce75c0f7c931c321bd2a6a1938248e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2218177
Commit-Queue: Olivier Robin <olivierrobin@chromium.org>
Reviewed-by: Mark Cogan <marq@chromium.org>
Cr-Commit-Position: refs/heads/master@{#774073}

ios/chrome/browser/ui/main/scene_controller.mm

@@ -346,6 +346,21 @@ const NSTimeInterval kDisplayPromoDelay = 0.1;
   }
 }
 
+- (void)sceneState:(SceneState*)sceneState
+    hasPendingURLs:(NSSet<UIOpenURLContext*>*)URLContexts
+    API_AVAILABLE(ios(13)) {
+  if (URLContexts &&
+      sceneState.activationLevel == SceneActivationLevelForegroundActive) {
+    // It is necessary to reset the URLContextsToOpen after opening them.
+    // Handle the opening asynchronously to avoid interfering with potential
+    // other observers.
+    dispatch_async(dispatch_get_main_queue(), ^{
+      [self openURLContexts:sceneState.URLContextsToOpen];
+      self.sceneState.URLContextsToOpen = nil;
+    });
+  }
+}
+
 #pragma mark - AppStateObserver
 
 - (void)appStateDidExitSafeMode:(AppState*)appState {

ios/chrome/browser/ui/main/scene_state.h

@@ -41,6 +41,10 @@ typedef NS_ENUM(NSUInteger, SceneActivationLevel) {
 - (void)sceneStateWillShowModalOverlay:(SceneState*)sceneState;
 // Notifies when presentingModalOverlay is being set to false.
 - (void)sceneStateWillHideModalOverlay:(SceneState*)sceneState;
+// Notifies when URLContexts have been added to |URLContextsToOpen|.
+- (void)sceneState:(SceneState*)sceneState
+    hasPendingURLs:(NSSet<UIOpenURLContext*>*)URLContexts
+    API_AVAILABLE(ios(13));
 
 @end
 
@@ -85,6 +89,8 @@ typedef NS_ENUM(NSUInteger, SceneActivationLevel) {
 
 // URLs passed to |UIWindowSceneDelegate scene:openURLContexts:| that needs to
 // be open next time the scene is activated.
+// Setting the property to not nil will add the new URL contexts to the set.
+// Setting the property to nil will clear the set.
 @property(nonatomic)
     NSSet<UIOpenURLContext*>* URLContextsToOpen API_AVAILABLE(ios(13));
 

ios/chrome/browser/ui/main/scene_state.mm

@@ -112,6 +112,18 @@
   _presentingModalOverlay = presentingModalOverlay;
 }
 
+- (void)setURLContextsToOpen:(NSSet<UIOpenURLContext*>*)URLContextsToOpen {
+  if (_URLContextsToOpen == nil || URLContextsToOpen == nil) {
+    _URLContextsToOpen = URLContextsToOpen;
+  } else {
+    _URLContextsToOpen =
+        [_URLContextsToOpen setByAddingObjectsFromSet:URLContextsToOpen];
+  }
+  if (_URLContextsToOpen) {
+    [self.observers sceneState:self hasPendingURLs:_URLContextsToOpen];
+  }
+}
+
 #pragma mark - debug
 
 - (NSString*)description {