extensions/browser/extension_zoom_request_client.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 EXTENSIONS_BROWSER_EXTENSION_ZOOM_REQUEST_CLIENT_H_
   6 #define EXTENSIONS_BROWSER_EXTENSION_ZOOM_REQUEST_CLIENT_H_
   7
   8 #include "base/memory/scoped_ptr.h"
   9 #include "components/ui/zoom/zoom_controller.h"
  10 #include "extensions/common/extension.h"
  11
  12 namespace extensions {
  13
  14 class Extension;
  15
  16 // This class implements ZoomRequestClient in order to encapsulate a ref pointer
  17 // back to an extension requesting a zoom level change. This is important so
  18 // that zoom event observers can determine if an extension made the request
  19 // as opposed to direct user input.
  20 class ExtensionZoomRequestClient : public ui_zoom::ZoomRequestClient {
  21  public:
  22   explicit ExtensionZoomRequestClient(scoped_refptr<const Extension> extension);
  23
  24   const Extension* extension() const { return extension_.get(); }
  25
  26  private:
  27   ~ExtensionZoomRequestClient() override;
  28   scoped_refptr<const Extension> extension_;
  29
  30   DISALLOW_COPY_AND_ASSIGN(ExtensionZoomRequestClient);
  31 };
  32
  33 }  // namespace extensions
  34
  35 #endif  // EXTENSIONS_BROWSER_EXTENSION_ZOOM_REQUEST_CLIENT_H_