gecko-dev/widget/gtk/NativeMenuGtk.h
Drew Willcoxon 929e1e4d77 Bug 1831760 - Use a native popup menu for positioned popups on Mac. r=dao,mstange
This does two things:

* Modify `nsXULPopupManager::ShowPopup()` so it calls `ShowPopupAsNativeMenu()`
  as long as an anchor wasn't passed in, and only on Mac.
* Modify `-[MOZMenuOpeningCoordinator _openMenu:atScreenPosition:forView:withAppearance:]`
  so it also takes a `aIsContextMenu` param. If the param is true, we synthesize
  a right-click event and pop up a context menu as usual. If it's false, we use
  `-[NSMenu popUpMenuPositioningItem:atLocation:inView:]` instead.

The reason this works is because `-[NSMenu popUpMenuPositioningItem:atLocation:inView:]`
opens the menu in a sensible place when the x-y coords are near the right edge
of the screen. In contrast, `+[NSMenu popUpContextMenu:withEvent:forView:]` will
anchor the menu's top-right corner to the mouse cursor when near the right edge.

Differential Revision: https://phabricator.services.mozilla.com/D177355
2023-05-18 05:51:19 +00:00

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1.7 KiB
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/* -*- Mode: c++; tab-width: 2; indent-tabs-mode: nil; -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef mozilla_widget_NativeMenuGtk_h
#define mozilla_widget_NativeMenuGtk_h
#include "mozilla/widget/NativeMenu.h"
#include "mozilla/EventForwards.h"
#include "GRefPtr.h"
namespace mozilla {
namespace dom {
class Element;
}
namespace widget {
class MenuModel;
class NativeMenuGtk : public NativeMenu {
public:
// Whether we can use native menu popups on GTK.
static bool CanUse();
explicit NativeMenuGtk(dom::Element* aElement);
// NativeMenu
MOZ_CAN_RUN_SCRIPT_BOUNDARY void ShowAsContextMenu(
nsIFrame* aClickedFrame, const CSSIntPoint& aPosition,
bool aIsContextMenu) override;
bool Close() override;
void ActivateItem(dom::Element* aItemElement, Modifiers aModifiers,
int16_t aButton, ErrorResult& aRv) override;
void OpenSubmenu(dom::Element* aMenuElement) override;
void CloseSubmenu(dom::Element* aMenuElement) override;
RefPtr<dom::Element> Element() override;
void AddObserver(NativeMenu::Observer* aObserver) override {
mObservers.AppendElement(aObserver);
}
void RemoveObserver(NativeMenu::Observer* aObserver) override {
mObservers.RemoveElement(aObserver);
}
MOZ_CAN_RUN_SCRIPT void OnUnmap();
protected:
virtual ~NativeMenuGtk();
MOZ_CAN_RUN_SCRIPT void FireEvent(EventMessage);
bool mPoppedUp = false;
RefPtr<GtkWidget> mNativeMenu;
RefPtr<MenuModel> mMenuModel;
nsTArray<NativeMenu::Observer*> mObservers;
};
} // namespace widget
} // namespace mozilla
#endif