Method to get Media Galleries handlers in MediaGalleriesPrivateApi.

For the gatekeeper, we need list of media galleries handlers to know what to display in the action choice dialog. This patch adds a method whih returns such lists via a asynchronous call to chrome.mediaGalleriesPrivate.getHandlers.

TEST=Tested manually. Not in production, yet.
BUG=222565

Review URL: https://codereview.chromium.org/13063004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@190556 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/extensions/api/media_galleries_private/media_galleries_private_api.cc

@@ -16,10 +16,12 @@
 #include "chrome/browser/extensions/event_names.h"
 #include "chrome/browser/extensions/event_router.h"
 #include "chrome/browser/extensions/extension_function.h"
+#include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/extensions/extension_system.h"
 #include "chrome/browser/extensions/media_galleries_handler.h"
 #include "chrome/browser/media_galleries/media_file_system_registry.h"
 #include "chrome/browser/media_galleries/media_galleries_preferences.h"
+#include "chrome/browser/profiles/profile.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/render_view_host.h"
 
@@ -350,4 +352,54 @@ void MediaGalleriesPrivateEjectDeviceFunction::HandleResponse(
   SendResponse(true);
 }
 
+///////////////////////////////////////////////////////////////////////////////
+//              MediaGalleriesPrivateGetHandlersFunction                     //
+///////////////////////////////////////////////////////////////////////////////
+
+MediaGalleriesPrivateGetHandlersFunction::
+~MediaGalleriesPrivateGetHandlersFunction() {
+}
+
+bool MediaGalleriesPrivateGetHandlersFunction::RunImpl() {
+  DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
+
+  ExtensionService* service =
+      extensions::ExtensionSystem::Get(profile_)->extension_service();
+  DCHECK(service);
+
+  ListValue* result_list = new ListValue();
+
+  for (ExtensionSet::const_iterator iter = service->extensions()->begin();
+       iter != service->extensions()->end();
+       ++iter) {
+    const Extension* extension = *iter;
+    if (profile_->IsOffTheRecord() &&
+        !service->IsIncognitoEnabled(extension->id()))
+      continue;
+
+    MediaGalleriesHandler::List* handler_list =
+        MediaGalleriesHandler::GetHandlers(extension);
+    if (!handler_list)
+      continue;
+
+    for (MediaGalleriesHandler::List::const_iterator action_iter =
+             handler_list->begin();
+         action_iter != handler_list->end();
+         ++action_iter) {
+      const MediaGalleriesHandler* action = action_iter->get();
+      DictionaryValue* handler = new DictionaryValue();
+      handler->SetString("extensionId", action->extension_id());
+      handler->SetString("id", action->id());
+      handler->SetString("title", action->title());
+      handler->SetString("iconUrl", action->icon_path());
+      result_list->Append(handler);
+    }
+  }
+
+  SetResult(result_list);
+  SendResponse(true);
+
+  return true;
+}
+
 }  // namespace extensions

chrome/browser/extensions/api/media_galleries_private/media_galleries_private_api.h

@@ -145,6 +145,20 @@ class MediaGalleriesPrivateEjectDeviceFunction
   void HandleResponse(chrome::StorageMonitor::EjectStatus status);
 };
 
+// Implements the chrome.mediaGalleriesPrivate.getHandlers method.
+class MediaGalleriesPrivateGetHandlersFunction
+    : public AsyncExtensionFunction {
+ public:
+  DECLARE_EXTENSION_FUNCTION("mediaGalleriesPrivate.getHandlers",
+                             MEDIAGALLERIESPRIVATE_GETHANDLERS);
+
+ protected:
+  virtual ~MediaGalleriesPrivateGetHandlersFunction();
+
+  // AsyncExtensionFunction overrides.
+  virtual bool RunImpl() OVERRIDE;
+};
+
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_MEDIA_GALLERIES_PRIVATE_MEDIA_GALLERIES_PRIVATE_API_H_

chrome/browser/extensions/extension_function_histogram_value.h

@@ -497,6 +497,7 @@ enum HistogramValue {
   WALLPAPERPRIVATE_SETCUSTOMWALLPAPERLAYOUT,
   DOWNLOADSINTERNAL_DETERMINEFILENAME,
   SYNCFILESYSTEM_GETFILESYNCSTATUSES,
+  MEDIAGALLERIESPRIVATE_GETHANDLERS,
   ENUM_BOUNDARY // Last entry: Add new entries above.
 };
 

chrome/common/extensions/api/media_galleries_private.idl

@@ -6,7 +6,7 @@
 // systeminfo.storage API in M24.
 
 namespace mediaGalleriesPrivate {
-    // A dictionary that describes an attached device.
+  // A dictionary that describes an attached device.
   [inline_doc] dictionary DeviceAttachmentDetails {
     // The name of the device.
     DOMString deviceName;
@@ -63,6 +63,23 @@ namespace mediaGalleriesPrivate {
 
   callback EjectDeviceCallback = void (EjectDeviceResultCode result);
 
+  // A dictionary that describes a media galleries handler.
+  [inline_doc] dictionary MediaGalleriesHandler {
+    // Unique action id per extension.
+    DOMString id;
+
+    // ID of the extension handling this handler.
+    DOMString extensionId;
+
+    // Localized title describing the action.
+    DOMString title;
+
+    // Url of the icon.
+    DOMString iconUrl;
+  };
+
+  callback GetHandlersCallback = void (MediaGalleriesHandler[] handlers);
+
   interface Functions {
     static void addGalleryWatch(DOMString galleryId,
                                 AddGalleryWatchCallback callback);
@@ -70,5 +87,6 @@ namespace mediaGalleriesPrivate {
     static void getAllGalleryWatch(GetAllGalleryWatchCallback callback);
     static void removeAllGalleryWatch();
     static void ejectDevice(DOMString deviceId, EjectDeviceCallback callback);
+    static void getHandlers(GetHandlersCallback callback);
   };
 };