chrome/renderer/extensions/notifications_native_handler.h

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CHROME_RENDERER_EXTENSIONS_NOTIFICATIONS_NATIVE_HANDLER_H_
   6 #define CHROME_RENDERER_EXTENSIONS_NOTIFICATIONS_NATIVE_HANDLER_H_
   7
   8 #include "base/compiler_specific.h"
   9 #include "extensions/renderer/object_backed_native_handler.h"
  10
  11 namespace base {
  12 class Value;
  13 }
  14
  15 namespace extensions {
  16
  17 class NotificationsNativeHandler : public ObjectBackedNativeHandler {
  18  public:
  19   explicit NotificationsNativeHandler(ScriptContext* context);
  20
  21  private:
  22   // This implements notifications_private.GetImageSizes() which
  23   // informs the renderer of the actual rendered size of each
  24   // component of a notification.  It additionally includes
  25   // information about the system's maximum scale factor so that
  26   // larger images specified in DP can be interpreted as scaled
  27   // versions of the DIP size.
  28   //   * |args| is used only to get the return value.
  29   //   * The return value contains the following keys:
  30   //         scaleFactor - a float a la devicePixelRatio
  31   //         icon - a dictionary with integer keys "height" and "width" (DIPs)
  32   //         image - a dictionary of the same format as |icon|
  33   //         buttonIcon - a dictionary of the same format as |icon|
  34   void GetNotificationImageSizes(
  35       const v8::FunctionCallbackInfo<v8::Value>& args);
  36
  37   DISALLOW_COPY_AND_ASSIGN(NotificationsNativeHandler);
  38 };
  39
  40 }  // namespace extensions
  41
  42 #endif  // CHROME_RENDERER_EXTENSIONS_NOTIFICATIONS_NATIVE_HANDLER_H_