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diff --git a/widget/cocoa/nsMacSharingService.mm b/widget/cocoa/nsMacSharingService.mm
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+/* -*- Mode: c++; tab-width: 2; indent-tabs-mode: nil; -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#import <Cocoa/Cocoa.h>
+
+#include "nsMacSharingService.h"
+
+#include "jsapi.h"
+#include "js/Array.h" // JS::NewArrayObject
+#include "js/PropertyAndElement.h" // JS_SetElement, JS_SetProperty
+#include "nsCocoaUtils.h"
+#include "mozilla/MacStringHelpers.h"
+
+NS_IMPL_ISUPPORTS(nsMacSharingService, nsIMacSharingService)
+
+NSString* const remindersServiceName =
+ @"com.apple.reminders.RemindersShareExtension";
+
+// These are some undocumented constants also used by Safari
+// to let us open the preferences window
+NSString* const extensionPrefPanePath =
+ @"/System/Library/PreferencePanes/Extensions.prefPane";
+const UInt32 openSharingSubpaneDescriptorType = 'ptru';
+NSString* const openSharingSubpaneActionKey = @"action";
+NSString* const openSharingSubpaneActionValue = @"revealExtensionPoint";
+NSString* const openSharingSubpaneProtocolKey = @"protocol";
+NSString* const openSharingSubpaneProtocolValue = @"com.apple.share-services";
+
+// Expose the id so we can pass reference through to JS and back
+@interface NSSharingService (ExposeName)
+- (id)name;
+@end
+
+// Filter providers that we do not want to expose to the user, because they are
+// duplicates or do not work correctly within the context
+static bool ShouldIgnoreProvider(NSString* aProviderName) {
+ return [aProviderName
+ isEqualToString:@"com.apple.share.System.add-to-safari-reading-list"];
+}
+
+// Clean up the activity once the share is complete
+@interface SharingServiceDelegate : NSObject <NSSharingServiceDelegate> {
+ NSUserActivity* mShareActivity;
+}
+
+- (void)cleanup;
+
+@end
+
+@implementation SharingServiceDelegate
+
+- (id)initWithActivity:(NSUserActivity*)activity {
+ self = [super init];
+ mShareActivity = [activity retain];
+ return self;
+}
+
+- (void)cleanup {
+ [mShareActivity resignCurrent];
+ [mShareActivity invalidate];
+ [mShareActivity release];
+ mShareActivity = nil;
+}
+
+- (void)sharingService:(NSSharingService*)sharingService
+ didShareItems:(NSArray*)items {
+ [self cleanup];
+}
+
+- (void)sharingService:(NSSharingService*)service
+ didFailToShareItems:(NSArray*)items
+ error:(NSError*)error {
+ [self cleanup];
+}
+
+- (void)dealloc {
+ [mShareActivity release];
+ [super dealloc];
+}
+
+@end
+
+static NSString* NSImageToBase64(const NSImage* aImage) {
+ CGImageRef cgRef = [aImage CGImageForProposedRect:nil context:nil hints:nil];
+ NSBitmapImageRep* bitmapRep =
+ [[NSBitmapImageRep alloc] initWithCGImage:cgRef];
+ [bitmapRep setSize:[aImage size]];
+ NSData* imageData =
+ [bitmapRep representationUsingType:NSBitmapImageFileTypePNG
+ properties:@{}];
+ NSString* base64Encoded = [imageData base64EncodedStringWithOptions:0];
+ [bitmapRep release];
+ return [NSString stringWithFormat:@"data:image/png;base64,%@", base64Encoded];
+}
+
+static void SetStrAttribute(JSContext* aCx, JS::Rooted<JSObject*>& aObj,
+ const char* aKey, NSString* aVal) {
+ nsAutoString strVal;
+ mozilla::CopyCocoaStringToXPCOMString(aVal, strVal);
+ JS::Rooted<JSString*> title(aCx, JS_NewUCStringCopyZ(aCx, strVal.get()));
+ JS::Rooted<JS::Value> attVal(aCx, JS::StringValue(title));
+ JS_SetProperty(aCx, aObj, aKey, attVal);
+}
+
+nsresult nsMacSharingService::GetSharingProviders(
+ const nsAString& aPageUrl, JSContext* aCx,
+ JS::MutableHandle<JS::Value> aResult) {
+ NS_OBJC_BEGIN_TRY_BLOCK_RETURN;
+
+ NSURL* url = nsCocoaUtils::ToNSURL(aPageUrl);
+ if (!url) {
+ // aPageUrl is not a valid URL.
+ return NS_ERROR_FAILURE;
+ }
+
+ NSArray* sharingService = [NSSharingService sharingServicesForItems:@[ url ]];
+ int32_t serviceCount = 0;
+ JS::Rooted<JSObject*> array(aCx, JS::NewArrayObject(aCx, 0));
+
+ for (NSSharingService* currentService in sharingService) {
+ if (ShouldIgnoreProvider([currentService name])) {
+ continue;
+ }
+ JS::Rooted<JSObject*> obj(aCx, JS_NewPlainObject(aCx));
+
+ SetStrAttribute(aCx, obj, "name", [currentService name]);
+ SetStrAttribute(aCx, obj, "menuItemTitle", currentService.menuItemTitle);
+ SetStrAttribute(aCx, obj, "image", NSImageToBase64(currentService.image));
+
+ JS::Rooted<JS::Value> element(aCx, JS::ObjectValue(*obj));
+ JS_SetElement(aCx, array, serviceCount++, element);
+ }
+
+ aResult.setObject(*array);
+
+ return NS_OK;
+ NS_OBJC_END_TRY_BLOCK_RETURN(NS_ERROR_FAILURE);
+}
+
+NS_IMETHODIMP
+nsMacSharingService::OpenSharingPreferences() {
+ NS_OBJC_BEGIN_TRY_BLOCK_RETURN;
+
+ NSURL* prefPaneURL = [NSURL fileURLWithPath:extensionPrefPanePath
+ isDirectory:YES];
+ NSDictionary* args = @{
+ openSharingSubpaneActionKey : openSharingSubpaneActionValue,
+ openSharingSubpaneProtocolKey : openSharingSubpaneProtocolValue
+ };
+ NSData* data = [NSPropertyListSerialization
+ dataWithPropertyList:args
+ format:NSPropertyListXMLFormat_v1_0
+ options:0
+ error:nil];
+ NSAppleEventDescriptor* descriptor = [[NSAppleEventDescriptor alloc]
+ initWithDescriptorType:openSharingSubpaneDescriptorType
+ data:data];
+
+ [[NSWorkspace sharedWorkspace] openURLs:@[ prefPaneURL ]
+ withAppBundleIdentifier:nil
+ options:NSWorkspaceLaunchAsync
+ additionalEventParamDescriptor:descriptor
+ launchIdentifiers:NULL];
+
+ [descriptor release];
+
+ return NS_OK;
+ NS_OBJC_END_TRY_BLOCK_RETURN(NS_ERROR_FAILURE);
+}
+
+NS_IMETHODIMP
+nsMacSharingService::ShareUrl(const nsAString& aServiceName,
+ const nsAString& aPageUrl,
+ const nsAString& aPageTitle) {
+ NS_OBJC_BEGIN_TRY_BLOCK_RETURN;
+
+ NSString* serviceName = nsCocoaUtils::ToNSString(aServiceName);
+ NSURL* pageUrl = nsCocoaUtils::ToNSURL(aPageUrl);
+ NSString* pageTitle = nsCocoaUtils::ToNSString(aPageTitle);
+ NSSharingService* service =
+ [NSSharingService sharingServiceNamed:serviceName];
+
+ // Reminders fetch its data from an activity, not the share data
+ if ([[service name] isEqual:remindersServiceName]) {
+ NSUserActivity* shareActivity = [[NSUserActivity alloc]
+ initWithActivityType:NSUserActivityTypeBrowsingWeb];
+
+ if ([pageUrl.scheme hasPrefix:@"http"]) {
+ [shareActivity setWebpageURL:pageUrl];
+ }
+ [shareActivity setEligibleForHandoff:NO];
+ [shareActivity setTitle:pageTitle];
+ [shareActivity becomeCurrent];
+
+ // Pass ownership of shareActivity to shareDelegate, which will release the
+ // activity once sharing has completed.
+ SharingServiceDelegate* shareDelegate =
+ [[SharingServiceDelegate alloc] initWithActivity:shareActivity];
+ [shareActivity release];
+
+ [service setDelegate:shareDelegate];
+ [shareDelegate release];
+ }
+
+ // Twitter likes the the title as an additional share item
+ NSArray* toShare = [[service name] isEqual:NSSharingServiceNamePostOnTwitter]
+ ? @[ pageUrl, pageTitle ]
+ : @[ pageUrl ];
+
+ [service setSubject:pageTitle];
+ [service performWithItems:toShare];
+
+ return NS_OK;
+
+ NS_OBJC_END_TRY_BLOCK_RETURN(NS_ERROR_FAILURE);
+}