File: ime_event_guard.h

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// Copyright 2013 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef THIRD_PARTY_BLINK_RENDERER_PLATFORM_WIDGET_INPUT_IME_EVENT_GUARD_H_
#define THIRD_PARTY_BLINK_RENDERER_PLATFORM_WIDGET_INPUT_IME_EVENT_GUARD_H_

#include "base/memory/weak_ptr.h"

namespace blink {
class WidgetBase;

// Simple RAII object for guarding IME updates. Calls OnImeGuardStart on
// construction and OnImeGuardFinish on destruction.
class ImeEventGuard {
 public:
  // The ImeEventGuard is intended to be allocated on the stack. A WeakPtr is
  // used because the associated RenderWidget may be destroyed while this
  // variable is on the stack. (i.e. inside a nested event loop).
  explicit ImeEventGuard(base::WeakPtr<WidgetBase> widget);
  ~ImeEventGuard();

  bool show_virtual_keyboard() const { return show_virtual_keyboard_; }
  void set_show_virtual_keyboard(bool show) { show_virtual_keyboard_ = show; }

 private:
  base::WeakPtr<WidgetBase> widget_;
  bool show_virtual_keyboard_ = false;
};
}  // namespace blink

#endif  // THIRD_PARTY_BLINK_RENDERER_PLATFORM_WIDGET_INPUT_IME_EVENT_GUARD_H_