text: /*
   * Copyright (C) 2010 Google Inc. All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions are
   * met:
   *
   *     * Redistributions of source code must retain the above copyright
   * notice, this list of conditions and the following disclaimer.
   *     * 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.
   *     * Neither the name of Google Inc. nor the names of its
   * contributors may be used to endorse or promote products derived from
   * this software without specific prior written permission.
   *
   * 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
   * OWNER 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.
   */
  
  #ifndef THIRD_PARTY_BLINK_RENDERER_CORE_HTML_FORMS_EXTERNAL_POPUP_MENU_H_
  #define THIRD_PARTY_BLINK_RENDERER_CORE_HTML_FORMS_EXTERNAL_POPUP_MENU_H_
  
  #include <memory>
  #include "cc/paint/paint_canvas.h"
  #include "third_party/blink/public/mojom/choosers/popup_menu.mojom-blink.h"
  #include "third_party/blink/renderer/core/core_export.h"
  #include "third_party/blink/renderer/core/html/forms/popup_menu.h"
  #include "third_party/blink/renderer/platform/mojo/heap_mojo_receiver.h"
  #include "third_party/blink/renderer/platform/mojo/heap_mojo_remote.h"
  #include "third_party/blink/renderer/platform/timer.h"
  
  namespace blink {
  
  class HTMLSelectElement;
  class LocalFrame;
  class WebMouseEvent;
  
  // The ExternalPopupMenu is a PopupMenu implementation for macOS and Android.
  // It uses a OS-native menu implementation.
  class CORE_EXPORT ExternalPopupMenu final
      : public PopupMenu,
        public mojom::blink::PopupMenuClient {
   public:
    ExternalPopupMenu(LocalFrame&, HTMLSelectElement&);
    ~ExternalPopupMenu() override;
  
    // Fills |info| with the popup menu information contained in the
    // PopupMenuClient associated with this ExternalPopupMenu.
    // FIXME: public only for test access. Need to revert once gtest
    // helpers from chromium are available for blink.
    static void GetPopupMenuInfo(HTMLSelectElement&,
                                 int32_t* item_height,
                                 double* font_size,
                                 int32_t* selected_item,
                                 Vector<mojom::blink::MenuItemPtr>* menu_items,
                                 bool* right_aligned,
                                 bool* allow_multiple_selection);
    static int ToPopupMenuItemIndex(int index, HTMLSelectElement&);
    static int ToExternalPopupMenuItemIndex(int index, HTMLSelectElement&);
  
    void Trace(Visitor*) const override;
  
   private:
    // PopupMenu methods:
    void Show() override;
    void Hide() override;
    void UpdateFromElement(UpdateReason) override;
    void DisconnectClient() override;
  
    // mojom::blink::PopupMenuClient methods:
    void DidAcceptIndices(const Vector<int32_t>& indices) override;
    void DidCancel() override;
  
    void Reset();
    bool ShowInternal();
    void DispatchEvent(TimerBase*);
    void Update();
  
    Member<HTMLSelectElement> owner_element_;
    Member<LocalFrame> local_frame_;
    std::unique_ptr<WebMouseEvent> synthetic_event_;
    HeapTaskRunnerTimer<ExternalPopupMenu> dispatch_event_timer_;
    // The actual implementor of the show menu.
    HeapMojoReceiver<mojom::blink::PopupMenuClient,
                     ExternalPopupMenu,
                     HeapMojoWrapperMode::kWithoutContextObserver>
        receiver_;
    bool needs_update_ = false;
  };
  
  }  // namespace blink
  
  #endif  // THIRD_PARTY_BLINK_RENDERER_CORE_HTML_FORMS_EXTERNAL_POPUP_MENU_H_
  