ui/wm/core/nested_accelerator_delegate.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 UI_WM_CORE_NESTED_ACCELERATOR_DELEGATE_H_
   6 #define UI_WM_CORE_NESTED_ACCELERATOR_DELEGATE_H_
   7
   8 namespace ui {
   9 class Accelerator;
  10 }
  11
  12 namespace wm {
  13
  14 // A delegate interface that implements the behavior of nested accelerator
  15 // handling.
  16 class NestedAcceleratorDelegate {
  17  public:
  18   enum Result {
  19     RESULT_PROCESSED,
  20     RESULT_NOT_PROCESSED,
  21     // The key event should be ignored now and instead be reposted so that
  22     // next event loop.
  23     RESULT_PROCESS_LATER,
  24   };
  25
  26   virtual ~NestedAcceleratorDelegate() {}
  27
  28   // Attempts to process the |accelerator|.
  29   virtual Result ProcessAccelerator(const ui::Accelerator& accelerator) = 0;
  30 };
  31
  32 }  // namespace wm
  33
  34 #endif  // UI_WM_CORE_NESTED_ACCELERATOR_DELEGATE_H_