text: /*
   * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions are met:
   *
   * 1. Redistributions of source code must retain the above copyright notice, this
   *    list of conditions and the following disclaimer.
   *
   * 2. Redistributions in binary form must reproduce the above copyright notice,
   *    this list of conditions and the following disclaimer in the documentation
   *    and/or other materials provided with the distribution.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
   * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
   * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
   * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
   * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
   * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  
  #pragma once
  
  #include <AK/Vector.h>
  #include <AK/WeakPtr.h>
  #include <LibCore/CObject.h>
  #include <LibGfx/Rect.h>
  
  namespace Gfx {
  class Painter;
  }
  
  class WSKeyEvent;
  class WSWindow;
  
  class WSWindowSwitcher : public Core::Object {
      C_OBJECT(WSWindowSwitcher)
  public:
      static WSWindowSwitcher& the();
  
      WSWindowSwitcher();
      virtual ~WSWindowSwitcher() override;
  
      bool is_visible() const { return m_visible; }
      void set_visible(bool);
  
      void show() { set_visible(true); }
      void hide() { set_visible(false); }
  
      void on_key_event(const WSKeyEvent&);
      void refresh();
      void refresh_if_needed();
  
      void draw();
  
      int thumbnail_width() { return 40; }
      int thumbnail_height() { return 40; }
  
      int item_height() { return 10 + thumbnail_height(); }
      int padding() { return 8; }
      int item_padding() { return 8; }
  
      WSWindow* selected_window();
  
      WSWindow* switcher_window() { return m_switcher_window.ptr(); }
  
  private:
      RefPtr<WSWindow> m_switcher_window;
      Gfx::Rect m_rect;
      bool m_visible { false };
      Vector<WeakPtr<WSWindow>> m_windows;
      int m_selected_index { 0 };
  };
  