src/chrome/browser/printing/printing_ui_web_contents_observer.h

   1 // Copyright 2013 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_PRINTING_PRINTING_UI_WEB_CONTENTS_OBSERVER_H_
   6 #define CHROME_BROWSER_PRINTING_PRINTING_UI_WEB_CONTENTS_OBSERVER_H_
   7
   8 #include "base/basictypes.h"
   9 #include "content/public/browser/web_contents_observer.h"
  10 #include "ui/gfx/native_widget_types.h"
  11
  12 // Wrapper used to keep track of the lifetime of a WebContents.
  13 // Lives on the UI thread.
  14 class PrintingUIWebContentsObserver : public content::WebContentsObserver {
  15  public:
  16   explicit PrintingUIWebContentsObserver(content::WebContents* web_contents);
  17
  18   // Return the parent NativeView of the observed WebContents.
  19   gfx::NativeView GetParentView();
  20
  21  private:
  22   DISALLOW_COPY_AND_ASSIGN(PrintingUIWebContentsObserver);
  23 };
  24
  25 #endif  // CHROME_BROWSER_PRINTING_PRINTING_UI_WEB_CONTENTS_OBSERVER_H_