[iOS] Use new clipboard recent content async apis in Today widget

The new async APIs don't get the actual clipboard content when checking
if the clipboard contains a url/image. This prevents them from
triggering the new iOS 14 pasteboard access notification at bad times.

Bug: 1110845
Change-Id: I8aa3989dae03999a319dc937f23432cff1f9ad81
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2325173Reviewed-by: Olivier Robin <olivierrobin@chromium.org>
Commit-Queue: Robbie Gibson <rkgibson@google.com>
Cr-Commit-Position: refs/heads/master@{#793547}

ios/chrome/search_widget_extension/copied_content_view.h

@@ -30,8 +30,7 @@ typedef NS_ENUM(NSInteger, CopiedContentType) {
 - (instancetype)initWithFrame:(CGRect)frame NS_UNAVAILABLE;
 - (instancetype)initWithCoder:(NSCoder*)aDecoder NS_UNAVAILABLE;
 
-- (void)setCopiedContentType:(CopiedContentType)type
-                  copiedText:(NSString*)copiedText;
+- (void)setCopiedContentType:(CopiedContentType)type;
 
 @end
 

ios/chrome/search_widget_extension/copied_content_view.mm

@@ -24,8 +24,6 @@ const CGFloat kURLButtonMargin = 10;
 
 // The type of the copied content
 @property(nonatomic) CopiedContentType type;
-// The copied text to be displayed if the type supports showing the string.
-@property(nonatomic, copy) NSString* copiedText;
 // The copied URL label containing the URL or a placeholder text.
 @property(nonatomic, strong) UILabel* copiedContentLabel;
 // The copied URL title label containing the title of the copied URL button.
@@ -38,7 +36,7 @@ const CGFloat kURLButtonMargin = 10;
 @property(nonatomic, strong) UIVisualEffectView* primaryEffectView;
 @property(nonatomic, strong) UIVisualEffectView* secondaryEffectView;
 
-// Updates the view to show the currently set |type| and |copiedText|.
+// Updates the view to show the currently set |type|.
 - (void)updateUI;
 
 @end
@@ -173,7 +171,7 @@ const CGFloat kURLButtonMargin = 10;
       [_copiedContentLabel.trailingAnchor
           constraintEqualToAnchor:_openCopiedContentTitleLabel.trailingAnchor],
     ]];
-    [self setCopiedContentType:CopiedContentTypeNone copiedText:nil];
+    [self setCopiedContentType:CopiedContentTypeNone];
     self.highlightableViews = @[
       _hairlineView, _copiedButtonView, _openCopiedContentTitleLabel,
       _copiedContentLabel
@@ -182,10 +180,8 @@ const CGFloat kURLButtonMargin = 10;
   return self;
 }
 
-- (void)setCopiedContentType:(CopiedContentType)type
-                  copiedText:(NSString*)copiedText {
+- (void)setCopiedContentType:(CopiedContentType)type {
   self.type = type;
-  self.copiedText = copiedText;
   [self updateUI];
 }
 
@@ -224,12 +220,10 @@ const CGFloat kURLButtonMargin = 10;
     }
     case CopiedContentTypeURL: {
       titleText = NSLocalizedString(@"IDS_IOS_OPEN_COPIED_LINK", nil);
-      contentText = self.copiedText;
       break;
     }
     case CopiedContentTypeString: {
       titleText = NSLocalizedString(@"IDS_IOS_OPEN_COPIED_TEXT", nil);
-      contentText = self.copiedText;
       break;
     }
     case CopiedContentTypeImage: {

ios/chrome/search_widget_extension/search_widget_view.h

@@ -44,10 +44,8 @@ typedef NS_ENUM(NSInteger, CopiedContentType);
 // Gets the height of the widget.
 - (CGFloat)widgetHeight;
 
-// Sets the copied content type. |copiedText| should be provided if the content
-// type requires textual data, otherwise it should be nil.
-- (void)setCopiedContentType:(CopiedContentType)type
-                  copiedText:(NSString*)copiedText;
+// Sets the copied content type.
+- (void)setCopiedContentType:(CopiedContentType)type;
 
 @end
 

ios/chrome/search_widget_extension/search_widget_view.mm

@@ -210,9 +210,8 @@ const CGFloat kMaxContentSize = 421;
   return [self actionContentHeight] + [self copiedURLSectionHeight];
 }
 
-- (void)setCopiedContentType:(CopiedContentType)type
-                  copiedText:(NSString*)copiedText {
-  [self.copiedURLSection setCopiedContentType:type copiedText:copiedText];
+- (void)setCopiedContentType:(CopiedContentType)type {
+  [self.copiedURLSection setCopiedContentType:type];
 }
 
 @end

ios/chrome/search_widget_extension/search_widget_view_controller.mm

@@ -23,8 +23,6 @@
 
 @interface SearchWidgetViewController ()<SearchWidgetViewActionTarget>
 @property(nonatomic, weak) SearchWidgetView* widgetView;
-@property(nonatomic, strong, nullable) NSString* copiedText;
-@property(nonatomic, strong, nullable) UIImage* copiedImage;
 @property(nonatomic) CopiedContentType copiedContentType;
 @property(nonatomic, strong)
     ClipboardRecentContentImplIOS* clipboardRecentContent;
@@ -96,13 +94,26 @@
 
 - (void)widgetPerformUpdateWithCompletionHandler:
     (void (^)(NCUpdateResult))completionHandler {
-  completionHandler([self updateWidget] ? NCUpdateResultNewData
-                                        : NCUpdateResultNoData);
+  [self updateWidgetWithCompletionHandler:^(BOOL updates) {
+    completionHandler(updates ? NCUpdateResultNewData : NCUpdateResultNoData);
+  }];
 }
 
-// Updates the widget with latest data from the clipboard. Returns whether any
-// visual updates occurred.
-- (BOOL)updateWidget {
+- (void)updateWidget {
+  [self updateWidgetWithCompletionHandler:^(BOOL updates) {
+    if (updates && self.extensionContext.widgetActiveDisplayMode ==
+                       NCWidgetDisplayModeExpanded) {
+      CGSize maxSize = [self.extensionContext
+          widgetMaximumSizeForDisplayMode:NCWidgetDisplayModeExpanded];
+      self.preferredContentSize =
+          CGSizeMake(maxSize.width, [self.widgetView widgetHeight]);
+    }
+  }];
+}
+
+// Updates the widget with latest data from the clipboard. Calls completion
+// handler with whether any updates occured..
+- (void)updateWidgetWithCompletionHandler:(void (^)(BOOL))completionHandler {
   NSUserDefaults* sharedDefaults = app_group::GetGroupUserDefaults();
   NSString* fieldTrialKey =
       base::SysUTF8ToNSString(app_group::kChromeExtensionFieldTrialPreference);
@@ -113,35 +124,25 @@
   self.supportsSearchByImage =
       [sharedDefaults boolForKey:supportsSearchByImageKey];
 
-  NSString* copiedText;
-  UIImage* copiedImage;
-  CopiedContentType type = CopiedContentTypeNone;
-
-  if (UIImage* image = [self getCopiedImageFromClipboard]) {
-    copiedImage = image;
-    type = CopiedContentTypeImage;
-  } else if (NSURL* url =
-                 [self.clipboardRecentContent recentURLFromClipboard]) {
-    copiedText = url.absoluteString;
-    type = CopiedContentTypeURL;
-  } else if (NSString* text =
-                 [self.clipboardRecentContent recentTextFromClipboard]) {
-    copiedText = text;
-    type = CopiedContentTypeString;
-  }
-
-  return [self setCopiedContentType:type
-                         copiedText:copiedText
-                        copiedImage:copiedImage];
-}
-
-// Helper method to encapsulate checking whether the current search engine
-// supports search-by-image and getting the copied image.
-- (UIImage*)getCopiedImageFromClipboard {
-  if (!self.supportsSearchByImage) {
-    return nil;
-  }
-  return [self.clipboardRecentContent recentImageFromClipboard];
+  NSSet* wantedTypes = [NSSet
+      setWithArray:@[ ContentTypeURL, ContentTypeText, ContentTypeImage ]];
+
+  [self.clipboardRecentContent
+      hasContentMatchingTypes:wantedTypes
+            completionHandler:^(NSSet<ContentType>* matchedTypes) {
+              CopiedContentType newType = CopiedContentTypeNone;
+              if (self.supportsSearchByImage &&
+                  [matchedTypes containsObject:ContentTypeImage]) {
+                newType = CopiedContentTypeImage;
+              } else if ([matchedTypes containsObject:ContentTypeURL]) {
+                newType = CopiedContentTypeURL;
+              } else if ([matchedTypes containsObject:ContentTypeText]) {
+                newType = CopiedContentTypeString;
+              }
+              dispatch_async(dispatch_get_main_queue(), ^{
+                completionHandler([self updateCopiedContentType:newType]);
+              });
+            }];
 }
 
 - (void)viewWillTransitionToSize:(CGSize)size
@@ -201,25 +202,47 @@
 }
 
 - (void)openCopiedContent:(id)sender {
-  DCHECK([self verifyCopiedContentType]);
   switch (self.copiedContentType) {
-    case CopiedContentTypeURL:
-      [self.command prepareToOpenURL:[NSURL URLWithString:self.copiedText]];
+    case CopiedContentTypeURL: {
+      [self.clipboardRecentContent
+          recentURLFromClipboardAsync:^(NSURL* copiedURL) {
+            if (!copiedURL) {
+              return;
+            }
+            [self.command prepareToOpenURL:copiedURL];
+            [self.command executeInApp];
+          }];
       break;
-    case CopiedContentTypeString:
-      [self.command prepareToSearchText:self.copiedText];
+    }
+    case CopiedContentTypeString: {
+      [self.clipboardRecentContent
+          recentTextFromClipboardAsync:^(NSString* copiedText) {
+            if (!copiedText) {
+              return;
+            }
+            [self.command prepareToSearchText:copiedText];
+            [self.command executeInApp];
+          }];
       break;
+    }
     case CopiedContentTypeImage: {
-      // Resize image before converting to NSData so we can store less data.
-      UIImage* resizedImage = ResizeImageForSearchByImage(self.copiedImage);
-      [self.command prepareToSearchImage:resizedImage];
+      [self.clipboardRecentContent
+          recentImageFromClipboardAsync:^(UIImage* copiedImage) {
+            if (!copiedImage) {
+              return;
+            }
+            // Resize image before converting to NSData so we can store less
+            // data.
+            UIImage* resizedImage = ResizeImageForSearchByImage(copiedImage);
+            [self.command prepareToSearchImage:resizedImage];
+            [self.command executeInApp];
+          }];
       break;
     }
     case CopiedContentTypeNone:
       NOTREACHED();
       return;
   }
-  [self.command executeInApp];
 }
 
 #pragma mark - internal
@@ -241,38 +264,15 @@
                       forKey:app_group::kSearchExtensionDisplayCount];
 }
 
-// Sets the copied content type. |copiedText| should be provided if the content
-// type requires textual data, otherwise it should be nil. Likewise,
-// |copiedImage| should be provided if the content type requires image data.
-// Also saves the data and returns YES if the screen needs updating and NO
-// otherwise.
-- (BOOL)setCopiedContentType:(CopiedContentType)type
-                  copiedText:(NSString*)copiedText
-                 copiedImage:(UIImage*)copiedImage {
-  if (self.copiedContentType == type &&
-      [self.copiedText isEqualToString:copiedText] &&
-      [self.copiedImage isEqual:copiedImage]) {
+// Sets the copied content type returns YES if the screen needs updating and NO
+// otherwise. This must only be called on the main thread.
+- (BOOL)updateCopiedContentType:(CopiedContentType)type {
+  if (self.copiedContentType == type) {
     return NO;
   }
   self.copiedContentType = type;
-  self.copiedText = copiedText;
-  self.copiedImage = copiedImage;
-  [self.widgetView setCopiedContentType:self.copiedContentType
-                             copiedText:self.copiedText];
+  [self.widgetView setCopiedContentType:self.copiedContentType];
   return YES;
 }
 
-// Verifies that the current copied content type has the required data with it.
-- (BOOL)verifyCopiedContentType {
-  switch (self.copiedContentType) {
-    case CopiedContentTypeString:
-    case CopiedContentTypeURL:
-      return self.copiedText;
-    case CopiedContentTypeImage:
-      return self.copiedImage;
-    case CopiedContentTypeNone:
-      return true;
-  }
-}
-
 @end