chrome/browser/chromeos/events/keyboard_driven_event_rewriter.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_CHROMEOS_EVENTS_KEYBOARD_DRIVEN_EVENT_REWRITER_H_
   6 #define CHROME_BROWSER_CHROMEOS_EVENTS_KEYBOARD_DRIVEN_EVENT_REWRITER_H_
   7
   8 #include "base/basictypes.h"
   9
  10 typedef union _XEvent XEvent;
  11
  12 namespace chromeos {
  13
  14 // KeyboardDrivenEventRewriter removes the modifier flags from
  15 // Shift+<Arrow keys|Enter|F6> key events. This mapping only happens
  16 // on login screen and only when the keyboard driven oobe is enabled.
  17 class KeyboardDrivenEventRewriter {
  18  public:
  19   KeyboardDrivenEventRewriter();
  20   ~KeyboardDrivenEventRewriter();
  21
  22   // Calls RewriteEvent to modify |event| if it is on login screen and the
  23   // keyboard driven flag is enabled. Returns true if the event is changed
  24   // and no further changes should happen.
  25   bool RewriteIfKeyboardDrivenOnLoginScreen(XEvent* event);
  26
  27   // Calls RewriteEvent for testing.
  28   bool RewriteForTesting(XEvent* event);
  29
  30  private:
  31   bool RewriteEvent(XEvent* event);
  32
  33   DISALLOW_COPY_AND_ASSIGN(KeyboardDrivenEventRewriter);
  34 };
  35
  36 }  // namespace chromeos
  37
  38 #endif  // CHROME_BROWSER_CHROMEOS_EVENTS_KEYBOARD_DRIVEN_EVENT_REWRITER_H_