1 files changed, 339 insertions, 0 deletions
diff --git a/dom/xul/XULPopupElement.cpp b/dom/xul/XULPopupElement.cpp
new file mode 100644
index 0000000000..d60173900e
--- /dev/null
+++ b/dom/xul/XULPopupElement.cpp
@@ -0,0 +1,339 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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/. */
+
+#include "XULMenuParentElement.h"
+#include "nsCOMPtr.h"
+#include "nsICSSDeclaration.h"
+#include "nsIContent.h"
+#include "nsNameSpaceManager.h"
+#include "nsGkAtoms.h"
+#include "nsMenuPopupFrame.h"
+#include "nsStringFwd.h"
+#include "nsView.h"
+#include "mozilla/AppUnits.h"
+#include "mozilla/AsyncEventDispatcher.h"
+#include "mozilla/dom/DOMRect.h"
+#include "mozilla/dom/Document.h"
+#include "mozilla/dom/Element.h"
+#include "mozilla/dom/Event.h"
+#include "mozilla/dom/XULPopupElement.h"
+#include "mozilla/dom/XULButtonElement.h"
+#include "mozilla/dom/XULMenuElement.h"
+#include "mozilla/dom/XULPopupElementBinding.h"
+#ifdef MOZ_WAYLAND
+#  include "mozilla/WidgetUtilsGtk.h"
+#endif
+
+namespace mozilla::dom {
+
+nsXULElement* NS_NewXULPopupElement(
+    already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo) {
+  RefPtr<mozilla::dom::NodeInfo> nodeInfo(aNodeInfo);
+  auto* nim = nodeInfo->NodeInfoManager();
+  return new (nim) XULPopupElement(nodeInfo.forget());
+}
+
+JSObject* XULPopupElement::WrapNode(JSContext* aCx,
+                                    JS::Handle<JSObject*> aGivenProto) {
+  return XULPopupElement_Binding::Wrap(aCx, this, aGivenProto);
+}
+
+nsMenuPopupFrame* XULPopupElement::GetFrame(FlushType aFlushType) {
+  nsIFrame* f = GetPrimaryFrame(aFlushType);
+  MOZ_ASSERT(!f || f->IsMenuPopupFrame());
+  return static_cast<nsMenuPopupFrame*>(f);
+}
+
+void XULPopupElement::OpenPopup(Element* aAnchorElement,
+                                const StringOrOpenPopupOptions& aOptions,
+                                int32_t aXPos, int32_t aYPos,
+                                bool aIsContextMenu, bool aAttributesOverride,
+                                Event* aTriggerEvent) {
+  nsAutoString position;
+  if (aOptions.IsOpenPopupOptions()) {
+    const OpenPopupOptions& options = aOptions.GetAsOpenPopupOptions();
+    position = options.mPosition;
+    aXPos = options.mX;
+    aYPos = options.mY;
+    aIsContextMenu = options.mIsContextMenu;
+    aAttributesOverride = options.mAttributesOverride;
+    aTriggerEvent = options.mTriggerEvent;
+  } else {
+    position = aOptions.GetAsString();
+  }
+
+  nsXULPopupManager* pm = nsXULPopupManager::GetInstance();
+  if (pm) {
+    // As a special case for popups that are menus when no anchor or position
+    // are specified, open the popup with ShowMenu instead of ShowPopup so that
+    // the popup is aligned with the menu.
+    if (!aAnchorElement && position.IsEmpty() && GetPrimaryFrame()) {
+      if (auto* menu = GetContainingMenu()) {
+        pm->ShowMenu(menu, false);
+        return;
+      }
+    }
+
+    pm->ShowPopup(this, aAnchorElement, position, aXPos, aYPos, aIsContextMenu,
+                  aAttributesOverride, false, aTriggerEvent);
+  }
+}
+
+void XULPopupElement::OpenPopupAtScreen(int32_t aXPos, int32_t aYPos,
+                                        bool aIsContextMenu,
+                                        Event* aTriggerEvent) {
+  nsXULPopupManager* pm = nsXULPopupManager::GetInstance();
+  if (pm) {
+    pm->ShowPopupAtScreen(this, aXPos, aYPos, aIsContextMenu, aTriggerEvent);
+  }
+}
+
+void XULPopupElement::OpenPopupAtScreenRect(const nsAString& aPosition,
+                                            int32_t aXPos, int32_t aYPos,
+                                            int32_t aWidth, int32_t aHeight,
+                                            bool aIsContextMenu,
+                                            bool aAttributesOverride,
+                                            Event* aTriggerEvent) {
+  nsXULPopupManager* pm = nsXULPopupManager::GetInstance();
+  if (pm) {
+    pm->ShowPopupAtScreenRect(
+        this, aPosition, nsIntRect(aXPos, aYPos, aWidth, aHeight),
+        aIsContextMenu, aAttributesOverride, aTriggerEvent);
+  }
+}
+
+void XULPopupElement::HidePopup(bool aCancel) {
+  nsXULPopupManager* pm = nsXULPopupManager::GetInstance();
+  if (!pm) {
+    return;
+  }
+  HidePopupOptions options{HidePopupOption::DeselectMenu};
+  if (aCancel) {
+    options += HidePopupOption::IsRollup;
+  }
+  pm->HidePopup(this, options);
+}
+
+static Modifiers ConvertModifiers(const ActivateMenuItemOptions& aModifiers) {
+  Modifiers modifiers = 0;
+  if (aModifiers.mCtrlKey) {
+    modifiers |= MODIFIER_CONTROL;
+  }
+  if (aModifiers.mAltKey) {
+    modifiers |= MODIFIER_ALT;
+  }
+  if (aModifiers.mShiftKey) {
+    modifiers |= MODIFIER_SHIFT;
+  }
+  if (aModifiers.mMetaKey) {
+    modifiers |= MODIFIER_META;
+  }
+  return modifiers;
+}
+
+void XULPopupElement::PopupOpened(bool aSelectFirstItem) {
+  if (aSelectFirstItem) {
+    SelectFirstItem();
+  }
+  if (RefPtr button = GetContainingMenu()) {
+    if (RefPtr parent = button->GetMenuParent()) {
+      parent->SetActiveMenuChild(button);
+    }
+  }
+}
+
+void XULPopupElement::PopupClosed(bool aDeselectMenu) {
+  LockMenuUntilClosed(false);
+  SetActiveMenuChild(nullptr);
+  auto dispatcher = MakeRefPtr<AsyncEventDispatcher>(
+      this, u"DOMMenuInactive"_ns, CanBubble::eYes, ChromeOnlyDispatch::eNo);
+  dispatcher->PostDOMEvent();
+  if (RefPtr button = GetContainingMenu()) {
+    button->PopupClosed(aDeselectMenu);
+  }
+}
+
+void XULPopupElement::ActivateItem(Element& aItemElement,
+                                   const ActivateMenuItemOptions& aOptions,
+                                   ErrorResult& aRv) {
+  if (!Contains(&aItemElement)) {
+    return aRv.ThrowInvalidStateError("Menu item is not inside this menu.");
+  }
+
+  Modifiers modifiers = ConvertModifiers(aOptions);
+
+  // First, check if a native menu is open, and activate the item in it.
+  if (nsXULPopupManager* pm = nsXULPopupManager::GetInstance()) {
+    if (pm->ActivateNativeMenuItem(&aItemElement, modifiers, aOptions.mButton,
+                                   aRv)) {
+      return;
+    }
+  }
+
+  auto* item = XULButtonElement::FromNode(aItemElement);
+  if (!item || !item->IsMenu()) {
+    return aRv.ThrowInvalidStateError("Not a menu item");
+  }
+
+  if (!item->GetPrimaryFrame(FlushType::Frames)) {
+    return aRv.ThrowInvalidStateError("Menu item is hidden");
+  }
+
+  auto* popup = item->GetContainingPopupElement();
+  if (!popup) {
+    return aRv.ThrowInvalidStateError("No popup");
+  }
+
+  nsMenuPopupFrame* frame = popup->GetFrame(FlushType::None);
+  if (!frame || !frame->IsOpen()) {
+    return aRv.ThrowInvalidStateError("Popup is not open");
+  }
+
+  // This is a chrome-only API, so we're trusted.
+  const bool trusted = true;
+  // KnownLive because item is aItemElement.
+  MOZ_KnownLive(item)->ExecuteMenu(modifiers, aOptions.mButton, trusted);
+}
+
+void XULPopupElement::MoveTo(int32_t aLeft, int32_t aTop) {
+  if (nsMenuPopupFrame* menuPopupFrame = do_QueryFrame(GetPrimaryFrame())) {
+    menuPopupFrame->MoveTo(CSSIntPoint(aLeft, aTop), true);
+  }
+}
+
+void XULPopupElement::MoveToAnchor(Element* aAnchorElement,
+                                   const nsAString& aPosition, int32_t aXPos,
+                                   int32_t aYPos, bool aAttributesOverride) {
+  nsMenuPopupFrame* menuPopupFrame = GetFrame(FlushType::None);
+  if (menuPopupFrame && menuPopupFrame->IsVisibleOrShowing()) {
+    menuPopupFrame->MoveToAnchor(aAnchorElement, aPosition, aXPos, aYPos,
+                                 aAttributesOverride);
+  }
+}
+
+void XULPopupElement::SizeTo(int32_t aWidth, int32_t aHeight) {
+  nsAutoCString width;
+  nsAutoCString height;
+  width.AppendInt(aWidth);
+  width.AppendLiteral("px");
+  height.AppendInt(aHeight);
+  height.AppendLiteral("px");
+
+  nsCOMPtr<nsICSSDeclaration> style = Style();
+  style->SetProperty("width"_ns, width, ""_ns, IgnoreErrors());
+  style->SetProperty("height"_ns, height, ""_ns, IgnoreErrors());
+
+  // If the popup is open, force a reposition of the popup after resizing it
+  // with notifications set to true so that the popuppositioned event is fired.
+  nsMenuPopupFrame* menuPopupFrame = do_QueryFrame(GetPrimaryFrame());
+  if (menuPopupFrame && menuPopupFrame->PopupState() == ePopupShown) {
+    menuPopupFrame->SetPopupPosition(false);
+  }
+}
+
+void XULPopupElement::GetState(nsString& aState) {
+  // set this here in case there's no frame for the popup
+  aState.AssignLiteral("closed");
+
+  if (nsXULPopupManager* pm = nsXULPopupManager::GetInstance()) {
+    switch (pm->GetPopupState(this)) {
+      case ePopupShown:
+        aState.AssignLiteral("open");
+        break;
+      case ePopupShowing:
+      case ePopupPositioning:
+      case ePopupOpening:
+      case ePopupVisible:
+        aState.AssignLiteral("showing");
+        break;
+      case ePopupHiding:
+      case ePopupInvisible:
+        aState.AssignLiteral("hiding");
+        break;
+      case ePopupClosed:
+        break;
+      default:
+        MOZ_ASSERT_UNREACHABLE("Bad popup state");
+        break;
+    }
+  }
+}
+
+nsINode* XULPopupElement::GetTriggerNode() const {
+  nsMenuPopupFrame* menuPopupFrame = do_QueryFrame(GetPrimaryFrame());
+  return nsMenuPopupFrame::GetTriggerContent(menuPopupFrame);
+}
+
+// FIXME(emilio): should probably be renamed to GetAnchorElement?
+Element* XULPopupElement::GetAnchorNode() const {
+  nsMenuPopupFrame* menuPopupFrame = do_QueryFrame(GetPrimaryFrame());
+  if (!menuPopupFrame) {
+    return nullptr;
+  }
+  return Element::FromNodeOrNull(menuPopupFrame->GetAnchor());
+}
+
+already_AddRefed<DOMRect> XULPopupElement::GetOuterScreenRect() {
+  RefPtr<DOMRect> rect = new DOMRect(ToSupports(OwnerDoc()));
+
+  // Return an empty rectangle if the popup is not open.
+  nsMenuPopupFrame* menuPopupFrame =
+      do_QueryFrame(GetPrimaryFrame(FlushType::Frames));
+  if (!menuPopupFrame || !menuPopupFrame->IsOpen()) {
+    return rect.forget();
+  }
+
+  Maybe<CSSRect> screenRect;
+
+  if (menuPopupFrame->IsNativeMenu()) {
+    // For native menus we can't query the true size. Use the anchor rect
+    // instead, which at least has the position at which we were intending to
+    // open the menu.
+    screenRect = Some(CSSRect(menuPopupFrame->GetScreenAnchorRect()));
+  } else {
+    // For non-native menus, query the bounds from the widget.
+    if (nsView* view = menuPopupFrame->GetView()) {
+      if (nsIWidget* widget = view->GetWidget()) {
+        screenRect = Some(widget->GetScreenBounds() /
+                          menuPopupFrame->PresContext()->CSSToDevPixelScale());
+      }
+    }
+  }
+
+  if (screenRect) {
+    rect->SetRect(screenRect->X(), screenRect->Y(), screenRect->Width(),
+                  screenRect->Height());
+  }
+  return rect.forget();
+}
+
+void XULPopupElement::SetConstraintRect(dom::DOMRectReadOnly& aRect) {
+  nsMenuPopupFrame* menuPopupFrame =
+      do_QueryFrame(GetPrimaryFrame(FlushType::Frames));
+  if (menuPopupFrame) {
+    menuPopupFrame->SetOverrideConstraintRect(CSSIntRect::Truncate(
+        aRect.Left(), aRect.Top(), aRect.Width(), aRect.Height()));
+  }
+}
+
+bool XULPopupElement::IsWaylandDragSource() const {
+#ifdef MOZ_WAYLAND
+  nsMenuPopupFrame* f = do_QueryFrame(GetPrimaryFrame());
+  return f && f->IsDragSource();
+#else
+  return false;
+#endif
+}
+
+bool XULPopupElement::IsWaylandPopup() const {
+#ifdef MOZ_WAYLAND
+  return widget::GdkIsWaylandDisplay() || widget::IsXWaylandProtocol();
+#else
+  return false;
+#endif
+}
+
+}  // namespace mozilla::dom