Provide an action to save an image on a link sheet

https://bugs.webkit.org/show_bug.cgi?id=198464

Reviewed by Wenson Hsieh.

When providing the set of default actions for a link
sheet, if an URL to an image was provided then offer
the action to save that image to Photos.

* UIProcess/ios/WKActionSheetAssistant.mm:
(-[WKActionSheetAssistant defaultActionsForLinkSheet:]):

Canonical link: https://commits.webkit.org/212489@main
git-svn-id: https://svn.webkit.org/repository/webkit/trunk@246023 268f45cc-cd09-0410-ab3c-d52691b4dbfc

Source/WebKit/ChangeLog

@@ -1,3 +1,17 @@
+2019-06-01  Dean Jackson  <dino@apple.com>
+
+        Provide an action to save an image on a link sheet
+        https://bugs.webkit.org/show_bug.cgi?id=198464
+
+        Reviewed by Wenson Hsieh.
+
+        When providing the set of default actions for a link
+        sheet, if an URL to an image was provided then offer
+        the action to save that image to Photos.
+
+        * UIProcess/ios/WKActionSheetAssistant.mm:
+        (-[WKActionSheetAssistant defaultActionsForLinkSheet:]):
+
 2019-06-01  Konstantin Tokarev  <annulen@yandex.ru>
 
         Remove include directives unused since r245186

Source/WebKit/UIProcess/ios/WKActionSheetAssistant.mm

@@ -542,6 +542,12 @@ - (void)_appendOpenActionsForURL:(NSURL *)url actions:(NSMutableArray *)defaultA
     if ([getSSReadingListClass() supportsURL:targetURL])
         [defaultActions addObject:[_WKElementAction _elementActionWithType:_WKElementActionTypeAddToReadingList assistant:self]];
 #endif
+
+    if ([elementInfo imageURL]) {
+        if (TCCAccessPreflight(getkTCCServicePhotos(), NULL) != kTCCAccessPreflightDenied)
+            [defaultActions addObject:[_WKElementAction _elementActionWithType:_WKElementActionTypeSaveImage assistant:self]];
+    }
+
     if (![[targetURL scheme] length] || [[targetURL scheme] caseInsensitiveCompare:@"javascript"] != NSOrderedSame) {
         [defaultActions addObject:[_WKElementAction _elementActionWithType:_WKElementActionTypeCopy assistant:self]];
         [defaultActions addObject:[_WKElementAction _elementActionWithType:_WKElementActionTypeShare assistant:self]];