chrome/browser/guest_view/guest_view.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_BROWSER_GUEST_VIEW_GUEST_VIEW_H_
   6 #define CHROME_BROWSER_GUEST_VIEW_GUEST_VIEW_H_
   7
   8 #include "chrome/browser/guest_view/guest_view_base.h"
   9
  10 // A GuestView is the templated base class for out-of-process frames in the
  11 // chrome layer. GuestView is templated on its derived type to allow for type-
  12 // safe access. See GuestViewBase for more information.
  13 template <typename T>
  14 class GuestView : public GuestViewBase {
  15  public:
  16   static T* From(int embedder_process_id, int guest_instance_id) {
  17     GuestViewBase* guest =
  18         GuestViewBase::From(embedder_process_id, guest_instance_id);
  19     if (!guest)
  20       return NULL;
  21     return guest->As<T>();
  22   }
  23
  24   static T* FromWebContents(content::WebContents* contents) {
  25     GuestViewBase* guest = GuestViewBase::FromWebContents(contents);
  26     return guest ? guest->As<T>() : NULL;
  27   }
  28
  29   T* GetOpener() const {
  30     GuestViewBase* guest = GuestViewBase::GetOpener();
  31     if (!guest)
  32       return NULL;
  33     return guest->As<T>();
  34   }
  35
  36   void SetOpener(T* opener) {
  37     GuestViewBase::SetOpener(opener);
  38   }
  39
  40   // GuestViewBase implementation.
  41   virtual const char* GetViewType() const OVERRIDE {
  42     return T::Type;
  43   }
  44
  45  protected:
  46   GuestView(int guest_instance_id,
  47             content::WebContents* guest_web_contents,
  48             const std::string& embedder_extension_id)
  49       : GuestViewBase(guest_instance_id,
  50                       guest_web_contents,
  51                       embedder_extension_id) {}
  52   virtual ~GuestView() {}
  53
  54  private:
  55   DISALLOW_COPY_AND_ASSIGN(GuestView);
  56 };
  57
  58 #endif  // CHROME_BROWSER_GUEST_VIEW_GUEST_VIEW_H_