chrome/browser/ui/views/apps/desktop_keyboard_capture.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_UI_VIEWS_APPS_DESKTOP_KEYBOARD_CAPTURE_H_
   6 #define CHROME_BROWSER_UI_VIEWS_APPS_DESKTOP_KEYBOARD_CAPTURE_H_
   7
   8 #include "ui/views/widget/widget.h"
   9 #include "ui/views/widget/widget_observer.h"
  10
  11 // This class installs/uninstalls keyboard hook as the widget activation
  12 // changes.
  13 class DesktopKeyboardCapture : public views::WidgetObserver {
  14  public:
  15   explicit DesktopKeyboardCapture(views::Widget* widget);
  16   ~DesktopKeyboardCapture() override;
  17
  18  private:
  19   // views::WidgetObserver implementation.
  20   void OnWidgetActivationChanged(views::Widget* widget, bool active) override;
  21
  22   void RegisterKeyboardHooks();
  23   void DeregisterKeyboardHooks();
  24
  25   // The widget registering for keyboard intercept. Weak reference.
  26   views::Widget* widget_;
  27
  28   // Current state of keyboard intercept registration.
  29   bool is_registered_;
  30
  31   DISALLOW_COPY_AND_ASSIGN(DesktopKeyboardCapture);
  32 };
  33
  34 #endif  // CHROME_BROWSER_UI_VIEWS_APPS_DESKTOP_KEYBOARD_CAPTURE_H_