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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 19:33:14 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 19:33:14 +0000
commit36d22d82aa202bb199967e9512281e9a53db42c9 (patch)
tree105e8c98ddea1c1e4784a60a5a6410fa416be2de /layout/xul/nsMenuPopupFrame.cpp
parentInitial commit. (diff)
downloadfirefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz
firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip
Adding upstream version 115.7.0esr.upstream/115.7.0esr
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'layout/xul/nsMenuPopupFrame.cpp')
-rw-r--r--layout/xul/nsMenuPopupFrame.cpp2433
1 files changed, 2433 insertions, 0 deletions
diff --git a/layout/xul/nsMenuPopupFrame.cpp b/layout/xul/nsMenuPopupFrame.cpp
new file mode 100644
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+++ b/layout/xul/nsMenuPopupFrame.cpp
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+/* -*- 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 "nsMenuPopupFrame.h"
+#include "LayoutConstants.h"
+#include "XULButtonElement.h"
+#include "XULPopupElement.h"
+#include "mozilla/dom/XULPopupElement.h"
+#include "nsGkAtoms.h"
+#include "nsIContent.h"
+#include "nsIFrameInlines.h"
+#include "nsAtom.h"
+#include "nsPresContext.h"
+#include "mozilla/ComputedStyle.h"
+#include "nsCSSRendering.h"
+#include "nsNameSpaceManager.h"
+#include "nsIFrameInlines.h"
+#include "nsViewManager.h"
+#include "nsWidgetsCID.h"
+#include "nsPIDOMWindow.h"
+#include "nsFrameManager.h"
+#include "mozilla/dom/Document.h"
+#include "nsRect.h"
+#include "nsIScrollableFrame.h"
+#include "nsIPopupContainer.h"
+#include "nsIDocShell.h"
+#include "nsReadableUtils.h"
+#include "nsUnicharUtils.h"
+#include "nsLayoutUtils.h"
+#include "nsContentUtils.h"
+#include "nsCSSFrameConstructor.h"
+#include "nsPIWindowRoot.h"
+#include "nsIReflowCallback.h"
+#include "nsIDocShellTreeOwner.h"
+#include "nsIBaseWindow.h"
+#include "nsISound.h"
+#include "nsIScreenManager.h"
+#include "nsServiceManagerUtils.h"
+#include "nsStyleConsts.h"
+#include "nsStyleStructInlines.h"
+#include "nsTransitionManager.h"
+#include "nsDisplayList.h"
+#include "nsIDOMXULSelectCntrlEl.h"
+#include "mozilla/widget/ScreenManager.h"
+#include "mozilla/AnimationUtils.h"
+#include "mozilla/BasePrincipal.h"
+#include "mozilla/EventDispatcher.h"
+#include "mozilla/EventStateManager.h"
+#include "mozilla/Preferences.h"
+#include "mozilla/LookAndFeel.h"
+#include "mozilla/MouseEvents.h"
+#include "mozilla/PresShell.h"
+#include "mozilla/Services.h"
+#include "mozilla/dom/BrowserParent.h"
+#include "mozilla/dom/Element.h"
+#include "mozilla/dom/Event.h"
+#include "mozilla/dom/KeyboardEvent.h"
+#include "mozilla/dom/KeyboardEventBinding.h"
+#include <algorithm>
+
+#include "X11UndefineNone.h"
+#include "nsXULPopupManager.h"
+
+using namespace mozilla;
+using mozilla::dom::Document;
+using mozilla::dom::Element;
+using mozilla::dom::Event;
+using mozilla::dom::XULButtonElement;
+
+int8_t nsMenuPopupFrame::sDefaultLevelIsTop = -1;
+
+TimeStamp nsMenuPopupFrame::sLastKeyTime;
+
+#ifdef MOZ_WAYLAND
+# include "mozilla/WidgetUtilsGtk.h"
+# define IS_WAYLAND_DISPLAY() mozilla::widget::GdkIsWaylandDisplay()
+extern mozilla::LazyLogModule gWidgetPopupLog;
+# define LOG_WAYLAND(...) \
+ MOZ_LOG(gWidgetPopupLog, mozilla::LogLevel::Debug, (__VA_ARGS__))
+#else
+# define IS_WAYLAND_DISPLAY() false
+# define LOG_WAYLAND(...)
+#endif
+
+// NS_NewMenuPopupFrame
+//
+// Wrapper for creating a new menu popup container
+//
+nsIFrame* NS_NewMenuPopupFrame(PresShell* aPresShell, ComputedStyle* aStyle) {
+ return new (aPresShell)
+ nsMenuPopupFrame(aStyle, aPresShell->GetPresContext());
+}
+
+NS_IMPL_FRAMEARENA_HELPERS(nsMenuPopupFrame)
+
+NS_QUERYFRAME_HEAD(nsMenuPopupFrame)
+ NS_QUERYFRAME_ENTRY(nsMenuPopupFrame)
+NS_QUERYFRAME_TAIL_INHERITING(nsBlockFrame)
+
+//
+// nsMenuPopupFrame ctor
+//
+nsMenuPopupFrame::nsMenuPopupFrame(ComputedStyle* aStyle,
+ nsPresContext* aPresContext)
+ : nsBlockFrame(aStyle, aPresContext, kClassID) {
+ // the preference name is backwards here. True means that the 'top' level is
+ // the default, and false means that the 'parent' level is the default.
+ if (sDefaultLevelIsTop >= 0) return;
+ sDefaultLevelIsTop =
+ Preferences::GetBool("ui.panel.default_level_parent", false);
+} // ctor
+
+nsMenuPopupFrame::~nsMenuPopupFrame() = default;
+
+static bool IsMouseTransparent(const ComputedStyle& aStyle) {
+ // If pointer-events: none; is set on the popup, then the widget should
+ // ignore mouse events, passing them through to the content behind.
+ return aStyle.PointerEvents() == StylePointerEvents::None;
+}
+
+static nsIWidget::InputRegion ComputeInputRegion(const ComputedStyle& aStyle,
+ const nsPresContext& aPc) {
+ return {IsMouseTransparent(aStyle),
+ (aStyle.StyleUIReset()->mMozWindowInputRegionMargin.ToCSSPixels() *
+ aPc.CSSToDevPixelScale())
+ .Truncated()};
+}
+
+bool nsMenuPopupFrame::ShouldCreateWidgetUpfront() const {
+ if (mPopupType != PopupType::Menu) {
+ // Any panel with a type attribute, such as the autocomplete popup, is
+ // always generated right away.
+ return mContent->AsElement()->HasAttr(nsGkAtoms::type);
+ }
+
+ // Generate the widget up-front if the parent menu is a <menulist> unless its
+ // sizetopopup is set to "none".
+ return ShouldExpandToInflowParentOrAnchor();
+}
+
+void nsMenuPopupFrame::Init(nsIContent* aContent, nsContainerFrame* aParent,
+ nsIFrame* aPrevInFlow) {
+ nsBlockFrame::Init(aContent, aParent, aPrevInFlow);
+
+ CreatePopupView();
+
+ // XXX Hack. The popup's view should float above all other views,
+ // so we use the nsView::SetFloating() to tell the view manager
+ // about that constraint.
+ nsView* ourView = GetView();
+ nsViewManager* viewManager = ourView->GetViewManager();
+ viewManager->SetViewFloating(ourView, true);
+
+ const auto& el = PopupElement();
+ mPopupType = PopupType::Panel;
+ if (el.IsMenu()) {
+ mPopupType = PopupType::Menu;
+ } else if (el.IsXULElement(nsGkAtoms::tooltip)) {
+ mPopupType = PopupType::Tooltip;
+ }
+
+ if (PresContext()->IsChrome()) {
+ mInContentShell = false;
+ }
+
+ // Support incontentshell=false attribute to allow popups to be displayed
+ // outside of the content shell. Chrome only.
+ if (el.NodePrincipal()->IsSystemPrincipal()) {
+ if (el.GetXULBoolAttr(nsGkAtoms::incontentshell)) {
+ mInContentShell = true;
+ } else if (el.AttrValueIs(kNameSpaceID_None, nsGkAtoms::incontentshell,
+ nsGkAtoms::_false, eCaseMatters)) {
+ mInContentShell = false;
+ }
+ }
+
+ // To improve performance, create the widget for the popup if needed. Popups
+ // such as menus will create their widgets later when the popup opens.
+ //
+ // FIXME(emilio): Doing this up-front for all menupopups causes a bunch of
+ // assertions, while it's supposed to be just an optimization.
+ if (!ourView->HasWidget() && ShouldCreateWidgetUpfront()) {
+ CreateWidgetForView(ourView);
+ }
+
+ AddStateBits(NS_FRAME_IN_POPUP);
+}
+
+bool nsMenuPopupFrame::HasRemoteContent() const {
+ return !mInContentShell && mPopupType == PopupType::Panel &&
+ mContent->AsElement()->AttrValueIs(kNameSpaceID_None,
+ nsGkAtoms::remote, nsGkAtoms::_true,
+ eIgnoreCase);
+}
+
+bool nsMenuPopupFrame::IsNoAutoHide() const {
+ // Panels with noautohide="true" don't hide when the mouse is clicked
+ // outside of them, or when another application is made active. Non-autohide
+ // panels cannot be used in content windows.
+ return !mInContentShell && mPopupType == PopupType::Panel &&
+ mContent->AsElement()->AttrValueIs(kNameSpaceID_None,
+ nsGkAtoms::noautohide,
+ nsGkAtoms::_true, eIgnoreCase);
+}
+
+widget::PopupLevel nsMenuPopupFrame::GetPopupLevel(bool aIsNoAutoHide) const {
+ // The popup level is determined as follows, in this order:
+ // 1. non-panels (menus and tooltips) are always topmost
+ // 2. any specified level attribute
+ // 3. if a titlebar attribute is set, use the 'floating' level
+ // 4. if this is a noautohide panel, use the 'parent' level
+ // 5. use the platform-specific default level
+
+ // If this is not a panel, this is always a top-most popup.
+ if (mPopupType != PopupType::Panel) {
+ return PopupLevel::Top;
+ }
+
+ // If the level attribute has been set, use that.
+ static Element::AttrValuesArray strings[] = {
+ nsGkAtoms::top, nsGkAtoms::parent, nsGkAtoms::floating, nullptr};
+ switch (mContent->AsElement()->FindAttrValueIn(
+ kNameSpaceID_None, nsGkAtoms::level, strings, eCaseMatters)) {
+ case 0:
+ return PopupLevel::Top;
+ case 1:
+ return PopupLevel::Parent;
+ case 2:
+ return PopupLevel::Floating;
+ }
+
+ // Panels with titlebars most likely want to be floating popups.
+ if (mContent->AsElement()->HasAttr(nsGkAtoms::titlebar)) {
+ return PopupLevel::Floating;
+ }
+
+ // If this panel is a noautohide panel, the default is the parent level.
+ if (aIsNoAutoHide) {
+ return PopupLevel::Parent;
+ }
+
+ // Otherwise, the result depends on the platform.
+ return sDefaultLevelIsTop ? PopupLevel::Top : PopupLevel::Parent;
+}
+
+void nsMenuPopupFrame::PrepareWidget(bool aRecreate) {
+ nsView* ourView = GetView();
+ if (aRecreate) {
+ if (auto* widget = GetWidget()) {
+ // Widget's WebRender resources needs to be cleared before creating new
+ // widget.
+ widget->ClearCachedWebrenderResources();
+ }
+ ourView->DestroyWidget();
+ }
+ if (!ourView->HasWidget()) {
+ CreateWidgetForView(ourView);
+ } else {
+ PropagateStyleToWidget();
+ }
+}
+
+nsresult nsMenuPopupFrame::CreateWidgetForView(nsView* aView) {
+ // Create a widget for ourselves.
+ widget::InitData widgetData;
+ widgetData.mWindowType = widget::WindowType::Popup;
+ widgetData.mBorderStyle = widget::BorderStyle::Default;
+ widgetData.mForMenupopupFrame = true;
+ widgetData.mClipSiblings = true;
+ widgetData.mPopupHint = mPopupType;
+ widgetData.mNoAutoHide = IsNoAutoHide();
+
+ if (!mInContentShell) {
+ // A drag popup may be used for non-static translucent drag feedback
+ if (mPopupType == PopupType::Panel &&
+ mContent->AsElement()->AttrValueIs(kNameSpaceID_None, nsGkAtoms::type,
+ nsGkAtoms::drag, eIgnoreCase)) {
+ widgetData.mIsDragPopup = true;
+ }
+ }
+
+ nsAutoString title;
+ if (widgetData.mNoAutoHide &&
+ mContent->AsElement()->AttrValueIs(kNameSpaceID_None, nsGkAtoms::titlebar,
+ nsGkAtoms::normal, eCaseMatters)) {
+ widgetData.mBorderStyle = widget::BorderStyle::Title;
+
+ mContent->AsElement()->GetAttr(kNameSpaceID_None, nsGkAtoms::label, title);
+ if (mContent->AsElement()->AttrValueIs(kNameSpaceID_None, nsGkAtoms::close,
+ nsGkAtoms::_true, eCaseMatters)) {
+ widgetData.mBorderStyle =
+ widgetData.mBorderStyle | widget::BorderStyle::Close;
+ }
+ }
+
+ bool remote = HasRemoteContent();
+
+ const auto mode = nsLayoutUtils::GetFrameTransparency(this, this);
+ widgetData.mHasRemoteContent = remote;
+ widgetData.mTransparencyMode = mode;
+ widgetData.mPopupLevel = GetPopupLevel(widgetData.mNoAutoHide);
+
+ // Panels which have a parent level need a parent widget. This allows them to
+ // always appear in front of the parent window but behind other windows that
+ // should be in front of it.
+ nsCOMPtr<nsIWidget> parentWidget;
+ if (widgetData.mPopupLevel != PopupLevel::Top) {
+ nsCOMPtr<nsIDocShellTreeItem> dsti = PresContext()->GetDocShell();
+ if (!dsti) return NS_ERROR_FAILURE;
+
+ nsCOMPtr<nsIDocShellTreeOwner> treeOwner;
+ dsti->GetTreeOwner(getter_AddRefs(treeOwner));
+ if (!treeOwner) return NS_ERROR_FAILURE;
+
+ nsCOMPtr<nsIBaseWindow> baseWindow(do_QueryInterface(treeOwner));
+ if (baseWindow) baseWindow->GetMainWidget(getter_AddRefs(parentWidget));
+ }
+
+ nsresult rv = aView->CreateWidgetForPopup(&widgetData, parentWidget);
+ if (NS_FAILED(rv)) {
+ return rv;
+ }
+
+ nsIWidget* widget = aView->GetWidget();
+ widget->SetTransparencyMode(mode);
+
+ PropagateStyleToWidget();
+
+ // most popups don't have a title so avoid setting the title if there isn't
+ // one
+ if (!title.IsEmpty()) {
+ widget->SetTitle(title);
+ }
+
+ return NS_OK;
+}
+
+void nsMenuPopupFrame::PropagateStyleToWidget(WidgetStyleFlags aFlags) const {
+ if (aFlags.isEmpty()) {
+ return;
+ }
+
+ nsIWidget* widget = GetWidget();
+ if (!widget) {
+ return;
+ }
+
+ if (aFlags.contains(WidgetStyle::ColorScheme)) {
+ widget->SetColorScheme(Some(LookAndFeel::ColorSchemeForFrame(this)));
+ }
+ if (aFlags.contains(WidgetStyle::InputRegion)) {
+ widget->SetInputRegion(ComputeInputRegion(*Style(), *PresContext()));
+ }
+ if (aFlags.contains(WidgetStyle::Opacity)) {
+ widget->SetWindowOpacity(StyleUIReset()->mWindowOpacity);
+ }
+ if (aFlags.contains(WidgetStyle::Shadow)) {
+ widget->SetWindowShadowStyle(GetShadowStyle());
+ }
+ if (aFlags.contains(WidgetStyle::Transform)) {
+ widget->SetWindowTransform(ComputeWidgetTransform());
+ }
+}
+
+bool nsMenuPopupFrame::IsMouseTransparent() const {
+ return ::IsMouseTransparent(*Style());
+}
+
+StyleWindowShadow nsMenuPopupFrame::GetShadowStyle() const {
+ StyleWindowShadow shadow = StyleUIReset()->mWindowShadow;
+ if (shadow != StyleWindowShadow::Default) {
+ return shadow;
+ }
+
+ switch (StyleDisplay()->EffectiveAppearance()) {
+ case StyleAppearance::Tooltip:
+ return StyleWindowShadow::Tooltip;
+ case StyleAppearance::Menupopup:
+ return StyleWindowShadow::Menu;
+ default:
+ return StyleWindowShadow::Default;
+ }
+}
+
+void nsMenuPopupFrame::SetPopupState(nsPopupState aState) {
+ mPopupState = aState;
+
+ // Work around https://gitlab.gnome.org/GNOME/gtk/-/issues/4166
+ if (aState == ePopupShown && IS_WAYLAND_DISPLAY()) {
+ if (nsIWidget* widget = GetWidget()) {
+ widget->SetInputRegion(ComputeInputRegion(*Style(), *PresContext()));
+ }
+ }
+}
+
+// TODO: Convert this to MOZ_CAN_RUN_SCRIPT (bug 1415230, bug 1535398)
+MOZ_CAN_RUN_SCRIPT_BOUNDARY NS_IMETHODIMP nsXULPopupShownEvent::Run() {
+ nsMenuPopupFrame* popup = do_QueryFrame(mPopup->GetPrimaryFrame());
+ // Set the state to visible if the popup is still open.
+ if (popup && popup->IsOpen()) {
+ popup->SetPopupState(ePopupShown);
+ }
+
+ if (!mPopup->IsXULElement(nsGkAtoms::tooltip)) {
+ nsCOMPtr<nsIObserverService> obsService =
+ mozilla::services::GetObserverService();
+ if (obsService) {
+ obsService->NotifyObservers(mPopup, "popup-shown", nullptr);
+ }
+ }
+ WidgetMouseEvent event(true, eXULPopupShown, nullptr,
+ WidgetMouseEvent::eReal);
+ return EventDispatcher::Dispatch(mPopup, mPresContext, &event);
+}
+
+NS_IMETHODIMP nsXULPopupShownEvent::HandleEvent(Event* aEvent) {
+ nsMenuPopupFrame* popup = do_QueryFrame(mPopup->GetPrimaryFrame());
+ // Ignore events not targeted at the popup itself (ie targeted at
+ // descendants):
+ if (mPopup != aEvent->GetTarget()) {
+ return NS_OK;
+ }
+ if (popup) {
+ // ResetPopupShownDispatcher will delete the reference to this, so keep
+ // another one until Run is finished.
+ RefPtr<nsXULPopupShownEvent> event = this;
+ // Only call Run if it the dispatcher was assigned. This avoids calling the
+ // Run method if the transitionend event fires multiple times.
+ if (popup->ClearPopupShownDispatcher()) {
+ return Run();
+ }
+ }
+
+ CancelListener();
+ return NS_OK;
+}
+
+void nsXULPopupShownEvent::CancelListener() {
+ mPopup->RemoveSystemEventListener(u"transitionend"_ns, this, false);
+}
+
+NS_IMPL_ISUPPORTS_INHERITED(nsXULPopupShownEvent, Runnable,
+ nsIDOMEventListener);
+
+void nsMenuPopupFrame::DidSetComputedStyle(ComputedStyle* aOldStyle) {
+ nsBlockFrame::DidSetComputedStyle(aOldStyle);
+
+ if (!aOldStyle) {
+ return;
+ }
+
+ WidgetStyleFlags flags;
+
+ if (aOldStyle->StyleUI()->mColorScheme != StyleUI()->mColorScheme) {
+ flags += WidgetStyle::ColorScheme;
+ }
+
+ auto& newUI = *StyleUIReset();
+ auto& oldUI = *aOldStyle->StyleUIReset();
+ if (newUI.mWindowOpacity != oldUI.mWindowOpacity) {
+ flags += WidgetStyle::Opacity;
+ }
+
+ if (newUI.mMozWindowTransform != oldUI.mMozWindowTransform) {
+ flags += WidgetStyle::Transform;
+ }
+
+ if (newUI.mWindowShadow != oldUI.mWindowShadow) {
+ flags += WidgetStyle::Shadow;
+ }
+
+ const auto& pc = *PresContext();
+ auto oldRegion = ComputeInputRegion(*aOldStyle, pc);
+ auto newRegion = ComputeInputRegion(*Style(), pc);
+ if (oldRegion.mFullyTransparent != newRegion.mFullyTransparent ||
+ oldRegion.mMargin != newRegion.mMargin) {
+ flags += WidgetStyle::InputRegion;
+ }
+
+ PropagateStyleToWidget(flags);
+}
+
+void nsMenuPopupFrame::TweakMinPrefISize(nscoord& aSize) {
+ if (!ShouldExpandToInflowParentOrAnchor()) {
+ return;
+ }
+ // Make sure to accommodate for our scrollbar if needed. Do it only for
+ // menulists to match previous behavior.
+ //
+ // NOTE(emilio): This is somewhat hacky. The "right" fix (which would be
+ // using scrollbar-gutter: stable on the scroller) isn't great, because even
+ // though we want a stable gutter, we want to draw on top of the gutter when
+ // there's no scrollbar, otherwise it looks rather weird.
+ //
+ // Automatically accommodating for the scrollbar otherwise would be bug
+ // 764076, but that has its own set of problems.
+ if (nsIScrollableFrame* sf = GetScrollFrame()) {
+ aSize += sf->GetDesiredScrollbarSizes().LeftRight();
+ }
+
+ nscoord menuListOrAnchorWidth = 0;
+ if (nsIFrame* menuList = GetInFlowParent()) {
+ menuListOrAnchorWidth = menuList->GetRect().width;
+ }
+ if (mAnchorType == MenuPopupAnchorType_Rect) {
+ menuListOrAnchorWidth = std::max(menuListOrAnchorWidth, mScreenRect.width);
+ }
+ // Input margin doesn't have contents, so account for it for popup sizing
+ // purposes.
+ menuListOrAnchorWidth +=
+ 2 * StyleUIReset()->mMozWindowInputRegionMargin.ToAppUnits();
+ aSize = std::max(aSize, menuListOrAnchorWidth);
+}
+
+nscoord nsMenuPopupFrame::GetMinISize(gfxContext* aRC) {
+ nscoord result;
+ DISPLAY_PREF_INLINE_SIZE(this, result);
+
+ result = nsBlockFrame::GetMinISize(aRC);
+ TweakMinPrefISize(result);
+ return result;
+}
+
+nscoord nsMenuPopupFrame::GetPrefISize(gfxContext* aRC) {
+ nscoord result;
+ DISPLAY_PREF_INLINE_SIZE(this, result);
+
+ result = nsBlockFrame::GetPrefISize(aRC);
+ TweakMinPrefISize(result);
+ return result;
+}
+
+void nsMenuPopupFrame::Reflow(nsPresContext* aPresContext,
+ ReflowOutput& aDesiredSize,
+ const ReflowInput& aReflowInput,
+ nsReflowStatus& aStatus) {
+ MarkInReflow();
+ DO_GLOBAL_REFLOW_COUNT("nsMenuPopupFrame");
+ DISPLAY_REFLOW(aPresContext, this, aReflowInput, aDesiredSize, aStatus);
+ MOZ_ASSERT(aStatus.IsEmpty(), "Caller should pass a fresh reflow status!");
+
+ const auto wm = GetWritingMode();
+ // Default to preserving our bounds.
+ aDesiredSize.SetSize(wm, GetLogicalSize(wm));
+
+ LayoutPopup(aPresContext, aDesiredSize, aReflowInput, aStatus);
+
+ aDesiredSize.SetBlockStartAscent(aDesiredSize.BSize(wm));
+ aDesiredSize.SetOverflowAreasToDesiredBounds();
+ FinishAndStoreOverflow(&aDesiredSize, aReflowInput.mStyleDisplay);
+}
+
+void nsMenuPopupFrame::EnsureActiveMenuListItemIsVisible() {
+ if (!IsMenuList() || !IsOpen()) {
+ return;
+ }
+ nsIFrame* frame = GetCurrentMenuItemFrame();
+ if (!frame) {
+ return;
+ }
+ RefPtr<mozilla::PresShell> presShell = PresShell();
+ presShell->ScrollFrameIntoView(
+ frame, Nothing(), ScrollAxis(), ScrollAxis(),
+ ScrollFlags::ScrollOverflowHidden | ScrollFlags::ScrollFirstAncestorOnly);
+}
+
+void nsMenuPopupFrame::LayoutPopup(nsPresContext* aPresContext,
+ ReflowOutput& aDesiredSize,
+ const ReflowInput& aReflowInput,
+ nsReflowStatus& aStatus) {
+ if (IsNativeMenu()) {
+ return;
+ }
+
+ SchedulePaint();
+
+ const bool isOpen = IsOpen();
+ if (!isOpen) {
+ // If the popup is not open, only do layout while showing or if we're a
+ // menulist.
+ //
+ // This is needed because the SelectParent code wants to limit the height of
+ // the popup before opening it.
+ //
+ // TODO(emilio): We should consider adding a way to do that more reliably
+ // instead, but this preserves existing behavior.
+ const bool needsLayout = mPopupState == ePopupShowing ||
+ mPopupState == ePopupPositioning || IsMenuList();
+ if (!needsLayout) {
+ RemoveStateBits(NS_FRAME_FIRST_REFLOW);
+ return;
+ }
+ }
+
+ // Do a first reflow, with all our content, in order to find our preferred
+ // size. Then, we do a second reflow with the updated dimensions.
+ const bool needsPrefSize = mPrefSize == nsSize(-1, -1) || IsSubtreeDirty();
+ if (needsPrefSize) {
+ // Get the preferred, minimum and maximum size. If the menu is sized to the
+ // popup, then the popup's width is the menu's width.
+ ReflowOutput preferredSize(aReflowInput);
+ nsBlockFrame::Reflow(aPresContext, preferredSize, aReflowInput, aStatus);
+ mPrefSize = preferredSize.PhysicalSize();
+ }
+
+ // Get our desired position and final size, now that we have a preferred size.
+ auto constraints = GetRects(mPrefSize);
+ const auto finalSize = constraints.mUsedRect.Size();
+
+ // We need to do an extra reflow if we haven't reflowed, our size doesn't
+ // match with our final intended size, or our bsize is unconstrained (in which
+ // case we need to specify the final size so that percentages work).
+ const bool needDefiniteReflow =
+ aReflowInput.ComputedBSize() == NS_UNCONSTRAINEDSIZE || !needsPrefSize ||
+ finalSize != mPrefSize;
+
+ if (needDefiniteReflow) {
+ ReflowInput constrainedReflowInput(aReflowInput);
+ const auto& bp = aReflowInput.ComputedPhysicalBorderPadding();
+ // TODO: writing-mode handling not terribly correct, but it doesn't matter.
+ const nsSize finalContentSize(finalSize.width - bp.LeftRight(),
+ finalSize.height - bp.TopBottom());
+ constrainedReflowInput.SetComputedISize(finalContentSize.width);
+ constrainedReflowInput.SetComputedBSize(finalContentSize.height);
+ constrainedReflowInput.SetIResize(finalSize.width != mPrefSize.width);
+ constrainedReflowInput.SetBResize([&] {
+ if (finalSize.height != mPrefSize.height) {
+ return true;
+ }
+ if (needsPrefSize &&
+ aReflowInput.ComputedBSize() == NS_UNCONSTRAINEDSIZE &&
+ aReflowInput.ComputedMaxBSize() == finalContentSize.height) {
+ // If we have measured, and maybe clamped our children via max-height,
+ // they might need to get percentages in the block axis re-resolved.
+ return true;
+ }
+ return false;
+ }());
+
+ aStatus.Reset();
+ nsBlockFrame::Reflow(aPresContext, aDesiredSize, constrainedReflowInput,
+ aStatus);
+ }
+
+ // Set our size, since nsAbsoluteContainingBlock won't.
+ SetRect(constraints.mUsedRect);
+
+ nsView* view = GetView();
+ if (isOpen) {
+ nsViewManager* viewManager = view->GetViewManager();
+ viewManager->ResizeView(view,
+ nsRect(nsPoint(), constraints.mUsedRect.Size()));
+ if (mPopupState == ePopupOpening) {
+ mPopupState = ePopupVisible;
+ }
+
+ viewManager->SetViewVisibility(view, ViewVisibility::Show);
+ SyncFrameViewProperties(view);
+ }
+
+ // Perform our move now. That will position the view and so on.
+ PerformMove(constraints);
+
+ // finally, if the popup just opened, send a popupshown event
+ bool openChanged = mIsOpenChanged;
+ if (openChanged) {
+ mIsOpenChanged = false;
+
+ // Make sure the current selection in a menulist is visible.
+ EnsureActiveMenuListItemIsVisible();
+
+ // If the animate attribute is set to open, check for a transition and wait
+ // for it to finish before firing the popupshown event.
+ if (LookAndFeel::GetInt(LookAndFeel::IntID::PanelAnimations) &&
+ mContent->AsElement()->AttrValueIs(kNameSpaceID_None,
+ nsGkAtoms::animate, nsGkAtoms::open,
+ eCaseMatters) &&
+ AnimationUtils::HasCurrentTransitions(mContent->AsElement(),
+ PseudoStyleType::NotPseudo)) {
+ mPopupShownDispatcher = new nsXULPopupShownEvent(mContent, aPresContext);
+ mContent->AddSystemEventListener(u"transitionend"_ns,
+ mPopupShownDispatcher, false, false);
+ return;
+ }
+
+ // If there are no transitions, fire the popupshown event right away.
+ nsCOMPtr<nsIRunnable> event =
+ new nsXULPopupShownEvent(GetContent(), aPresContext);
+ mContent->OwnerDoc()->Dispatch(TaskCategory::Other, event.forget());
+ }
+}
+
+bool nsMenuPopupFrame::IsMenuList() const {
+ return PopupElement().IsInMenuList();
+}
+
+bool nsMenuPopupFrame::ShouldExpandToInflowParentOrAnchor() const {
+ return IsMenuList() && !mContent->GetParent()->AsElement()->AttrValueIs(
+ kNameSpaceID_None, nsGkAtoms::sizetopopup,
+ nsGkAtoms::none, eCaseMatters);
+}
+
+nsIContent* nsMenuPopupFrame::GetTriggerContent(
+ nsMenuPopupFrame* aMenuPopupFrame) {
+ while (aMenuPopupFrame) {
+ if (aMenuPopupFrame->mTriggerContent) {
+ return aMenuPopupFrame->mTriggerContent;
+ }
+
+ auto* button = XULButtonElement::FromNodeOrNull(
+ aMenuPopupFrame->GetContent()->GetParent());
+ if (!button || !button->IsMenu()) {
+ break;
+ }
+
+ auto* popup = button->GetContainingPopupElement();
+ if (!popup) {
+ break;
+ }
+
+ // check up the menu hierarchy until a popup with a trigger node is found
+ aMenuPopupFrame = do_QueryFrame(popup->GetPrimaryFrame());
+ }
+
+ return nullptr;
+}
+
+void nsMenuPopupFrame::InitPositionFromAnchorAlign(const nsAString& aAnchor,
+ const nsAString& aAlign) {
+ mTriggerContent = nullptr;
+
+ if (aAnchor.EqualsLiteral("topleft"))
+ mPopupAnchor = POPUPALIGNMENT_TOPLEFT;
+ else if (aAnchor.EqualsLiteral("topright"))
+ mPopupAnchor = POPUPALIGNMENT_TOPRIGHT;
+ else if (aAnchor.EqualsLiteral("bottomleft"))
+ mPopupAnchor = POPUPALIGNMENT_BOTTOMLEFT;
+ else if (aAnchor.EqualsLiteral("bottomright"))
+ mPopupAnchor = POPUPALIGNMENT_BOTTOMRIGHT;
+ else if (aAnchor.EqualsLiteral("leftcenter"))
+ mPopupAnchor = POPUPALIGNMENT_LEFTCENTER;
+ else if (aAnchor.EqualsLiteral("rightcenter"))
+ mPopupAnchor = POPUPALIGNMENT_RIGHTCENTER;
+ else if (aAnchor.EqualsLiteral("topcenter"))
+ mPopupAnchor = POPUPALIGNMENT_TOPCENTER;
+ else if (aAnchor.EqualsLiteral("bottomcenter"))
+ mPopupAnchor = POPUPALIGNMENT_BOTTOMCENTER;
+ else
+ mPopupAnchor = POPUPALIGNMENT_NONE;
+
+ if (aAlign.EqualsLiteral("topleft"))
+ mPopupAlignment = POPUPALIGNMENT_TOPLEFT;
+ else if (aAlign.EqualsLiteral("topright"))
+ mPopupAlignment = POPUPALIGNMENT_TOPRIGHT;
+ else if (aAlign.EqualsLiteral("bottomleft"))
+ mPopupAlignment = POPUPALIGNMENT_BOTTOMLEFT;
+ else if (aAlign.EqualsLiteral("bottomright"))
+ mPopupAlignment = POPUPALIGNMENT_BOTTOMRIGHT;
+ else
+ mPopupAlignment = POPUPALIGNMENT_NONE;
+
+ mPosition = POPUPPOSITION_UNKNOWN;
+}
+
+void nsMenuPopupFrame::InitializePopup(nsIContent* aAnchorContent,
+ nsIContent* aTriggerContent,
+ const nsAString& aPosition,
+ int32_t aXPos, int32_t aYPos,
+ MenuPopupAnchorType aAnchorType,
+ bool aAttributesOverride) {
+ auto* widget = GetWidget();
+ bool recreateWidget = widget && widget->NeedsRecreateToReshow();
+ PrepareWidget(recreateWidget);
+
+ mPopupState = ePopupShowing;
+ mAnchorContent = aAnchorContent;
+ mTriggerContent = aTriggerContent;
+ mXPos = aXPos;
+ mYPos = aYPos;
+ mIsNativeMenu = false;
+ mIsTopLevelContextMenu = false;
+ mVFlip = false;
+ mHFlip = false;
+ mAlignmentOffset = 0;
+ mPositionedOffset = 0;
+ mPositionedByMoveToRect = false;
+
+ mAnchorType = aAnchorType;
+
+ // if aAttributesOverride is true, then the popupanchor, popupalign and
+ // position attributes on the <menupopup> override those values passed in.
+ // If false, those attributes are only used if the values passed in are empty
+ if (aAnchorContent || aAnchorType == MenuPopupAnchorType_Rect) {
+ nsAutoString anchor, align, position, flip;
+ mContent->AsElement()->GetAttr(kNameSpaceID_None, nsGkAtoms::popupanchor,
+ anchor);
+ mContent->AsElement()->GetAttr(kNameSpaceID_None, nsGkAtoms::popupalign,
+ align);
+ mContent->AsElement()->GetAttr(kNameSpaceID_None, nsGkAtoms::position,
+ position);
+ mContent->AsElement()->GetAttr(kNameSpaceID_None, nsGkAtoms::flip, flip);
+
+ if (aAttributesOverride) {
+ // if the attributes are set, clear the offset position. Otherwise,
+ // the offset is used to adjust the position from the anchor point
+ if (anchor.IsEmpty() && align.IsEmpty() && position.IsEmpty())
+ position.Assign(aPosition);
+ else
+ mXPos = mYPos = 0;
+ } else if (!aPosition.IsEmpty()) {
+ position.Assign(aPosition);
+ }
+
+ if (flip.EqualsLiteral("none")) {
+ mFlip = FlipType_None;
+ } else if (flip.EqualsLiteral("both")) {
+ mFlip = FlipType_Both;
+ } else if (flip.EqualsLiteral("slide")) {
+ mFlip = FlipType_Slide;
+ }
+
+ position.CompressWhitespace();
+ int32_t spaceIdx = position.FindChar(' ');
+ // if there is a space in the position, assume it is the anchor and
+ // alignment as two separate tokens.
+ if (spaceIdx >= 0) {
+ InitPositionFromAnchorAlign(Substring(position, 0, spaceIdx),
+ Substring(position, spaceIdx + 1));
+ } else if (position.EqualsLiteral("before_start")) {
+ mPopupAnchor = POPUPALIGNMENT_TOPLEFT;
+ mPopupAlignment = POPUPALIGNMENT_BOTTOMLEFT;
+ mPosition = POPUPPOSITION_BEFORESTART;
+ } else if (position.EqualsLiteral("before_end")) {
+ mPopupAnchor = POPUPALIGNMENT_TOPRIGHT;
+ mPopupAlignment = POPUPALIGNMENT_BOTTOMRIGHT;
+ mPosition = POPUPPOSITION_BEFOREEND;
+ } else if (position.EqualsLiteral("after_start")) {
+ mPopupAnchor = POPUPALIGNMENT_BOTTOMLEFT;
+ mPopupAlignment = POPUPALIGNMENT_TOPLEFT;
+ mPosition = POPUPPOSITION_AFTERSTART;
+ } else if (position.EqualsLiteral("after_end")) {
+ mPopupAnchor = POPUPALIGNMENT_BOTTOMRIGHT;
+ mPopupAlignment = POPUPALIGNMENT_TOPRIGHT;
+ mPosition = POPUPPOSITION_AFTEREND;
+ } else if (position.EqualsLiteral("start_before")) {
+ mPopupAnchor = POPUPALIGNMENT_TOPLEFT;
+ mPopupAlignment = POPUPALIGNMENT_TOPRIGHT;
+ mPosition = POPUPPOSITION_STARTBEFORE;
+ } else if (position.EqualsLiteral("start_after")) {
+ mPopupAnchor = POPUPALIGNMENT_BOTTOMLEFT;
+ mPopupAlignment = POPUPALIGNMENT_BOTTOMRIGHT;
+ mPosition = POPUPPOSITION_STARTAFTER;
+ } else if (position.EqualsLiteral("end_before")) {
+ mPopupAnchor = POPUPALIGNMENT_TOPRIGHT;
+ mPopupAlignment = POPUPALIGNMENT_TOPLEFT;
+ mPosition = POPUPPOSITION_ENDBEFORE;
+ } else if (position.EqualsLiteral("end_after")) {
+ mPopupAnchor = POPUPALIGNMENT_BOTTOMRIGHT;
+ mPopupAlignment = POPUPALIGNMENT_BOTTOMLEFT;
+ mPosition = POPUPPOSITION_ENDAFTER;
+ } else if (position.EqualsLiteral("overlap")) {
+ mPopupAnchor = POPUPALIGNMENT_TOPLEFT;
+ mPopupAlignment = POPUPALIGNMENT_TOPLEFT;
+ mPosition = POPUPPOSITION_OVERLAP;
+ } else if (position.EqualsLiteral("after_pointer")) {
+ mPopupAnchor = POPUPALIGNMENT_TOPLEFT;
+ mPopupAlignment = POPUPALIGNMENT_TOPLEFT;
+ mPosition = POPUPPOSITION_AFTERPOINTER;
+ // XXXndeakin this is supposed to anchor vertically after, but with the
+ // horizontal position as the mouse pointer.
+ mYPos += 21;
+ } else if (position.EqualsLiteral("selection")) {
+ mPopupAnchor = POPUPALIGNMENT_BOTTOMLEFT;
+ mPopupAlignment = POPUPALIGNMENT_TOPLEFT;
+ mPosition = POPUPPOSITION_SELECTION;
+ } else {
+ InitPositionFromAnchorAlign(anchor, align);
+ }
+ }
+ // When converted back to CSSIntRect it is (-1, -1, 0, 0) - as expected in
+ // nsXULPopupManager::Rollup
+ mScreenRect = nsRect(-AppUnitsPerCSSPixel(), -AppUnitsPerCSSPixel(), 0, 0);
+
+ if (aAttributesOverride) {
+ // Use |left| and |top| dimension attributes to position the popup if
+ // present, as they may have been persisted.
+ nsAutoString left, top;
+ mContent->AsElement()->GetAttr(kNameSpaceID_None, nsGkAtoms::left, left);
+ mContent->AsElement()->GetAttr(kNameSpaceID_None, nsGkAtoms::top, top);
+
+ nsresult err;
+ if (!left.IsEmpty()) {
+ int32_t x = left.ToInteger(&err);
+ if (NS_SUCCEEDED(err)) {
+ mScreenRect.x = CSSPixel::ToAppUnits(x);
+ }
+ }
+ if (!top.IsEmpty()) {
+ int32_t y = top.ToInteger(&err);
+ if (NS_SUCCEEDED(err)) {
+ mScreenRect.y = CSSPixel::ToAppUnits(y);
+ }
+ }
+ }
+}
+
+void nsMenuPopupFrame::InitializePopupAtScreen(nsIContent* aTriggerContent,
+ int32_t aXPos, int32_t aYPos,
+ bool aIsContextMenu) {
+ auto* widget = GetWidget();
+ bool recreateWidget = widget && widget->NeedsRecreateToReshow();
+ PrepareWidget(recreateWidget);
+
+ mPopupState = ePopupShowing;
+ mAnchorContent = nullptr;
+ mTriggerContent = aTriggerContent;
+ mScreenRect =
+ nsRect(CSSPixel::ToAppUnits(aXPos), CSSPixel::ToAppUnits(aYPos), 0, 0);
+ mXPos = 0;
+ mYPos = 0;
+ mFlip = FlipType_Default;
+ mPopupAnchor = POPUPALIGNMENT_NONE;
+ mPopupAlignment = POPUPALIGNMENT_NONE;
+ mPosition = POPUPPOSITION_UNKNOWN;
+ mIsContextMenu = aIsContextMenu;
+ mIsTopLevelContextMenu = aIsContextMenu;
+ mIsNativeMenu = false;
+ mAnchorType = MenuPopupAnchorType_Point;
+ mPositionedOffset = 0;
+ mPositionedByMoveToRect = false;
+}
+
+void nsMenuPopupFrame::InitializePopupAsNativeContextMenu(
+ nsIContent* aTriggerContent, int32_t aXPos, int32_t aYPos) {
+ mTriggerContent = aTriggerContent;
+ mPopupState = ePopupShowing;
+ mAnchorContent = nullptr;
+ mScreenRect =
+ nsRect(CSSPixel::ToAppUnits(aXPos), CSSPixel::ToAppUnits(aYPos), 0, 0);
+ mXPos = 0;
+ mYPos = 0;
+ mFlip = FlipType_Default;
+ mPopupAnchor = POPUPALIGNMENT_NONE;
+ mPopupAlignment = POPUPALIGNMENT_NONE;
+ mPosition = POPUPPOSITION_UNKNOWN;
+ mIsContextMenu = true;
+ mIsTopLevelContextMenu = true;
+ mIsNativeMenu = true;
+ mAnchorType = MenuPopupAnchorType_Point;
+ mPositionedOffset = 0;
+ mPositionedByMoveToRect = false;
+}
+
+void nsMenuPopupFrame::InitializePopupAtRect(nsIContent* aTriggerContent,
+ const nsAString& aPosition,
+ const nsIntRect& aRect,
+ bool aAttributesOverride) {
+ InitializePopup(nullptr, aTriggerContent, aPosition, 0, 0,
+ MenuPopupAnchorType_Rect, aAttributesOverride);
+ mScreenRect = ToAppUnits(aRect, AppUnitsPerCSSPixel());
+}
+
+void nsMenuPopupFrame::ShowPopup(bool aIsContextMenu) {
+ mIsContextMenu = aIsContextMenu;
+
+ InvalidateFrameSubtree();
+
+ if (mPopupState == ePopupShowing || mPopupState == ePopupPositioning) {
+ mPopupState = ePopupOpening;
+ mIsOpenChanged = true;
+
+ // Clear mouse capture when a popup is opened.
+ if (mPopupType == PopupType::Menu) {
+ if (auto* activeESM = EventStateManager::GetActiveEventStateManager()) {
+ EventStateManager::ClearGlobalActiveContent(activeESM);
+ }
+
+ PresShell::ReleaseCapturingContent();
+ }
+
+ if (RefPtr menu = PopupElement().GetContainingMenu()) {
+ menu->PopupOpened();
+ }
+
+ // do we need an actual reflow here?
+ // is SetPopupPosition all that is needed?
+ PresShell()->FrameNeedsReflow(this, IntrinsicDirty::FrameAndAncestors,
+ NS_FRAME_IS_DIRTY);
+
+ if (mPopupType == PopupType::Menu) {
+ nsCOMPtr<nsISound> sound(do_GetService("@mozilla.org/sound;1"));
+ if (sound) sound->PlayEventSound(nsISound::EVENT_MENU_POPUP);
+ }
+ }
+}
+
+void nsMenuPopupFrame::ClearTriggerContentIncludingDocument() {
+ // clear the trigger content if the popup is being closed. But don't clear
+ // it if the popup is just being made invisible as a popuphiding or command
+ if (mTriggerContent) {
+ // if the popup had a trigger node set, clear the global window popup node
+ // as well
+ Document* doc = mContent->GetUncomposedDoc();
+ if (doc) {
+ if (nsPIDOMWindowOuter* win = doc->GetWindow()) {
+ nsCOMPtr<nsPIWindowRoot> root = win->GetTopWindowRoot();
+ if (root) {
+ root->SetPopupNode(nullptr);
+ }
+ }
+ }
+ }
+ mTriggerContent = nullptr;
+}
+
+void nsMenuPopupFrame::HidePopup(bool aDeselectMenu, nsPopupState aNewState,
+ bool aFromFrameDestruction) {
+ NS_ASSERTION(aNewState == ePopupClosed || aNewState == ePopupInvisible,
+ "popup being set to unexpected state");
+
+ ClearPopupShownDispatcher();
+
+ // don't hide the popup when it isn't open
+ if (mPopupState == ePopupClosed || mPopupState == ePopupShowing ||
+ mPopupState == ePopupPositioning) {
+ return;
+ }
+
+ if (aNewState == ePopupClosed) {
+ // clear the trigger content if the popup is being closed. But don't clear
+ // it if the popup is just being made invisible as a popuphiding or command
+ // event may want to retrieve it.
+ ClearTriggerContentIncludingDocument();
+ mAnchorContent = nullptr;
+ }
+
+ // when invisible and about to be closed, HidePopup has already been called,
+ // so just set the new state to closed and return
+ if (mPopupState == ePopupInvisible) {
+ if (aNewState == ePopupClosed) {
+ mPopupState = ePopupClosed;
+ }
+ return;
+ }
+
+ mPopupState = aNewState;
+
+ mIncrementalString.Truncate();
+
+ mIsOpenChanged = false;
+ mHFlip = mVFlip = false;
+
+ if (auto* widget = GetWidget()) {
+ // Ideally we should call ClearCachedWebrenderResources but there are
+ // intermittent failures (see bug 1748788), so we currently call
+ // ClearWebrenderAnimationResources instead.
+ widget->ClearWebrenderAnimationResources();
+ }
+
+ nsView* view = GetView();
+ nsViewManager* viewManager = view->GetViewManager();
+ viewManager->SetViewVisibility(view, ViewVisibility::Hide);
+
+ RefPtr popup = &PopupElement();
+ // XXX, bug 137033, In Windows, if mouse is outside the window when the
+ // menupopup closes, no mouse_enter/mouse_exit event will be fired to clear
+ // current hover state, we should clear it manually. This code may not the
+ // best solution, but we can leave it here until we find the better approach.
+ if (!aFromFrameDestruction &&
+ popup->State().HasState(dom::ElementState::HOVER)) {
+ EventStateManager* esm = PresContext()->EventStateManager();
+ esm->SetContentState(nullptr, dom::ElementState::HOVER);
+ }
+ popup->PopupClosed(aDeselectMenu);
+}
+
+nsPoint nsMenuPopupFrame::AdjustPositionForAnchorAlign(
+ nsRect& anchorRect, const nsSize& aPrefSize, FlipStyle& aHFlip,
+ FlipStyle& aVFlip) const {
+ // flip the anchor and alignment for right-to-left
+ int8_t popupAnchor(mPopupAnchor);
+ int8_t popupAlign(mPopupAlignment);
+ if (IsDirectionRTL()) {
+ // no need to flip the centered anchor types vertically
+ if (popupAnchor <= POPUPALIGNMENT_LEFTCENTER) {
+ popupAnchor = -popupAnchor;
+ }
+ popupAlign = -popupAlign;
+ }
+
+ nsRect originalAnchorRect(anchorRect);
+
+ // first, determine at which corner of the anchor the popup should appear
+ nsPoint pnt;
+ switch (popupAnchor) {
+ case POPUPALIGNMENT_LEFTCENTER:
+ pnt = nsPoint(anchorRect.x, anchorRect.y + anchorRect.height / 2);
+ anchorRect.y = pnt.y;
+ anchorRect.height = 0;
+ break;
+ case POPUPALIGNMENT_RIGHTCENTER:
+ pnt = nsPoint(anchorRect.XMost(), anchorRect.y + anchorRect.height / 2);
+ anchorRect.y = pnt.y;
+ anchorRect.height = 0;
+ break;
+ case POPUPALIGNMENT_TOPCENTER:
+ pnt = nsPoint(anchorRect.x + anchorRect.width / 2, anchorRect.y);
+ anchorRect.x = pnt.x;
+ anchorRect.width = 0;
+ break;
+ case POPUPALIGNMENT_BOTTOMCENTER:
+ pnt = nsPoint(anchorRect.x + anchorRect.width / 2, anchorRect.YMost());
+ anchorRect.x = pnt.x;
+ anchorRect.width = 0;
+ break;
+ case POPUPALIGNMENT_TOPRIGHT:
+ pnt = anchorRect.TopRight();
+ break;
+ case POPUPALIGNMENT_BOTTOMLEFT:
+ pnt = anchorRect.BottomLeft();
+ break;
+ case POPUPALIGNMENT_BOTTOMRIGHT:
+ pnt = anchorRect.BottomRight();
+ break;
+ case POPUPALIGNMENT_TOPLEFT:
+ default:
+ pnt = anchorRect.TopLeft();
+ break;
+ }
+
+ // If the alignment is on the right edge of the popup, move the popup left
+ // by the width. Similarly, if the alignment is on the bottom edge of the
+ // popup, move the popup up by the height. In addition, account for the
+ // margins of the popup on the edge on which it is aligned.
+ nsMargin margin = GetMargin();
+ switch (popupAlign) {
+ case POPUPALIGNMENT_TOPRIGHT:
+ pnt.MoveBy(-aPrefSize.width - margin.right, margin.top);
+ break;
+ case POPUPALIGNMENT_BOTTOMLEFT:
+ pnt.MoveBy(margin.left, -aPrefSize.height - margin.bottom);
+ break;
+ case POPUPALIGNMENT_BOTTOMRIGHT:
+ pnt.MoveBy(-aPrefSize.width - margin.right,
+ -aPrefSize.height - margin.bottom);
+ break;
+ case POPUPALIGNMENT_TOPLEFT:
+ default:
+ pnt.MoveBy(margin.left, margin.top);
+ break;
+ }
+
+ // If we aligning to the selected item in the popup, adjust the vertical
+ // position by the height of the menulist label and the selected item's
+ // position.
+ if (mPosition == POPUPPOSITION_SELECTION) {
+ MOZ_ASSERT(popupAnchor == POPUPALIGNMENT_BOTTOMLEFT ||
+ popupAnchor == POPUPALIGNMENT_BOTTOMRIGHT);
+ MOZ_ASSERT(popupAlign == POPUPALIGNMENT_TOPLEFT ||
+ popupAlign == POPUPALIGNMENT_TOPRIGHT);
+
+ // Only adjust the popup if it just opened, otherwise the popup will move
+ // around if its gets resized or the selection changed. Cache the value in
+ // mPositionedOffset and use that instead for any future calculations.
+ if (mIsOpenChanged) {
+ if (nsIFrame* selectedItemFrame = GetSelectedItemForAlignment()) {
+ const nscoord itemHeight = selectedItemFrame->GetRect().height;
+ const nscoord itemOffset =
+ selectedItemFrame->GetOffsetToIgnoringScrolling(this).y;
+ // We want to line-up the anchor rect with the selected item, but if the
+ // selected item is outside of our bounds, we don't want to shift the
+ // popup up in a way that our box would no longer intersect with the
+ // anchor.
+ nscoord maxOffset = aPrefSize.height - itemHeight;
+ if (const nsIScrollableFrame* sf = GetScrollFrame()) {
+ // HACK: We ideally would want to use the offset from the bottom
+ // bottom of our scroll-frame to the bottom of our frame (so as to
+ // ensure that the bottom of the scrollport is inside the anchor
+ // rect).
+ //
+ // But at this point of the code, the scroll frame may not be laid out
+ // with a definite size (might be overflowing us).
+ //
+ // So, we assume the offset from the bottom is symmetric to the offset
+ // from the top. This holds for all the popups where this matters
+ // (menulists on macOS, effectively), and seems better than somehow
+ // moving the popup after the fact as we used to do.
+ const nsIFrame* f = do_QueryFrame(sf);
+ maxOffset -= f->GetOffsetTo(this).y;
+ }
+ mPositionedOffset =
+ originalAnchorRect.height + std::min(itemOffset, maxOffset);
+ }
+ }
+
+ pnt.y -= mPositionedOffset;
+ }
+
+ // Flipping horizontally is allowed as long as the popup is above or below
+ // the anchor. This will happen if both the anchor and alignment are top or
+ // both are bottom, but different values. Similarly, flipping vertically is
+ // allowed if the popup is to the left or right of the anchor. In this case,
+ // the values of the constants are such that both must be positive or both
+ // must be negative. A special case, used for overlap, allows flipping
+ // vertically as well.
+ // If we are flipping in both directions, we want to set a flip style both
+ // horizontally and vertically. However, we want to flip on the inside edge
+ // of the anchor. Consider the example of a typical dropdown menu.
+ // Vertically, we flip the popup on the outside edges of the anchor menu,
+ // however horizontally, we want to to use the inside edges so the popup
+ // still appears underneath the anchor menu instead of floating off the
+ // side of the menu.
+ switch (popupAnchor) {
+ case POPUPALIGNMENT_LEFTCENTER:
+ case POPUPALIGNMENT_RIGHTCENTER:
+ aHFlip = FlipStyle_Outside;
+ aVFlip = FlipStyle_Inside;
+ break;
+ case POPUPALIGNMENT_TOPCENTER:
+ case POPUPALIGNMENT_BOTTOMCENTER:
+ aHFlip = FlipStyle_Inside;
+ aVFlip = FlipStyle_Outside;
+ break;
+ default: {
+ FlipStyle anchorEdge =
+ mFlip == FlipType_Both ? FlipStyle_Inside : FlipStyle_None;
+ aHFlip = (popupAnchor == -popupAlign) ? FlipStyle_Outside : anchorEdge;
+ if (((popupAnchor > 0) == (popupAlign > 0)) ||
+ (popupAnchor == POPUPALIGNMENT_TOPLEFT &&
+ popupAlign == POPUPALIGNMENT_TOPLEFT))
+ aVFlip = FlipStyle_Outside;
+ else
+ aVFlip = anchorEdge;
+ break;
+ }
+ }
+
+ return pnt;
+}
+
+nsIFrame* nsMenuPopupFrame::GetSelectedItemForAlignment() const {
+ // This method adjusts a menulist's popup such that the selected item is under
+ // the cursor, aligned with the menulist label.
+ nsCOMPtr<nsIDOMXULSelectControlElement> select;
+ if (mAnchorContent) {
+ select = mAnchorContent->AsElement()->AsXULSelectControl();
+ }
+
+ if (!select) {
+ // If there isn't an anchor, then try just getting the parent of the popup.
+ select = mContent->GetParent()->AsElement()->AsXULSelectControl();
+ if (!select) {
+ return nullptr;
+ }
+ }
+
+ nsCOMPtr<Element> selectedElement;
+ select->GetSelectedItem(getter_AddRefs(selectedElement));
+ return selectedElement ? selectedElement->GetPrimaryFrame() : nullptr;
+}
+
+nscoord nsMenuPopupFrame::SlideOrResize(nscoord& aScreenPoint, nscoord aSize,
+ nscoord aScreenBegin,
+ nscoord aScreenEnd,
+ nscoord* aOffset) const {
+ // The popup may be positioned such that either the left/top or bottom/right
+ // is outside the screen - but never both.
+ nscoord newPos =
+ std::max(aScreenBegin, std::min(aScreenEnd - aSize, aScreenPoint));
+ *aOffset = newPos - aScreenPoint;
+ aScreenPoint = newPos;
+ return std::min(aSize, aScreenEnd - aScreenPoint);
+}
+
+nscoord nsMenuPopupFrame::FlipOrResize(nscoord& aScreenPoint, nscoord aSize,
+ nscoord aScreenBegin, nscoord aScreenEnd,
+ nscoord aAnchorBegin, nscoord aAnchorEnd,
+ nscoord aMarginBegin, nscoord aMarginEnd,
+ FlipStyle aFlip, bool aEndAligned,
+ bool* aFlipSide) const {
+ // The flip side argument will be set to true if there wasn't room and we
+ // flipped to the opposite side.
+ *aFlipSide = false;
+
+ // all of the coordinates used here are in app units relative to the screen
+ nscoord popupSize = aSize;
+ if (aScreenPoint < aScreenBegin) {
+ // at its current position, the popup would extend past the left or top
+ // edge of the screen, so it will have to be moved or resized.
+ if (aFlip) {
+ // for inside flips, we flip on the opposite side of the anchor
+ nscoord startpos = aFlip == FlipStyle_Outside ? aAnchorBegin : aAnchorEnd;
+ nscoord endpos = aFlip == FlipStyle_Outside ? aAnchorEnd : aAnchorBegin;
+
+ // check whether there is more room to the left and right (or top and
+ // bottom) of the anchor and put the popup on the side with more room.
+ if (startpos - aScreenBegin >= aScreenEnd - endpos) {
+ aScreenPoint = aScreenBegin;
+ popupSize = startpos - aScreenPoint - aMarginEnd;
+ *aFlipSide = !aEndAligned;
+ } else {
+ // If the newly calculated position is different than the existing
+ // position, flip such that the popup is to the right or bottom of the
+ // anchor point instead . However, when flipping use the same margin
+ // size.
+ nscoord newScreenPoint = endpos + aMarginEnd;
+ if (newScreenPoint != aScreenPoint) {
+ *aFlipSide = aEndAligned;
+ aScreenPoint = newScreenPoint;
+ // check if the new position is still off the right or bottom edge of
+ // the screen. If so, resize the popup.
+ if (aScreenPoint + aSize > aScreenEnd) {
+ popupSize = aScreenEnd - aScreenPoint;
+ }
+ }
+ }
+ } else {
+ aScreenPoint = aScreenBegin;
+ }
+ } else if (aScreenPoint + aSize > aScreenEnd) {
+ // at its current position, the popup would extend past the right or
+ // bottom edge of the screen, so it will have to be moved or resized.
+ if (aFlip) {
+ // for inside flips, we flip on the opposite side of the anchor
+ nscoord startpos = aFlip == FlipStyle_Outside ? aAnchorBegin : aAnchorEnd;
+ nscoord endpos = aFlip == FlipStyle_Outside ? aAnchorEnd : aAnchorBegin;
+
+ // check whether there is more room to the left and right (or top and
+ // bottom) of the anchor and put the popup on the side with more room.
+ if (aScreenEnd - endpos >= startpos - aScreenBegin) {
+ *aFlipSide = aEndAligned;
+ if (mIsContextMenu) {
+ aScreenPoint = aScreenEnd - aSize;
+ } else {
+ aScreenPoint = endpos + aMarginBegin;
+ popupSize = aScreenEnd - aScreenPoint;
+ }
+ } else {
+ // if the newly calculated position is different than the existing
+ // position, we flip such that the popup is to the left or top of the
+ // anchor point instead.
+ nscoord newScreenPoint = startpos - aSize - aMarginBegin;
+ if (newScreenPoint != aScreenPoint) {
+ *aFlipSide = !aEndAligned;
+ aScreenPoint = newScreenPoint;
+
+ // check if the new position is still off the left or top edge of the
+ // screen. If so, resize the popup.
+ if (aScreenPoint < aScreenBegin) {
+ aScreenPoint = aScreenBegin;
+ if (!mIsContextMenu) {
+ popupSize = startpos - aScreenPoint - aMarginBegin;
+ }
+ }
+ }
+ }
+ } else {
+ aScreenPoint = aScreenEnd - aSize;
+ }
+ }
+
+ // Make sure that the point is within the screen boundaries and that the
+ // size isn't off the edge of the screen. This can happen when a large
+ // positive or negative margin is used.
+ if (aScreenPoint < aScreenBegin) {
+ aScreenPoint = aScreenBegin;
+ }
+ if (aScreenPoint > aScreenEnd) {
+ aScreenPoint = aScreenEnd - aSize;
+ }
+
+ // If popupSize ended up being negative, or the original size was actually
+ // smaller than the calculated popup size, just use the original size instead.
+ if (popupSize <= 0 || aSize < popupSize) {
+ popupSize = aSize;
+ }
+
+ return std::min(popupSize, aScreenEnd - aScreenPoint);
+}
+
+nsRect nsMenuPopupFrame::ComputeAnchorRect(nsPresContext* aRootPresContext,
+ nsIFrame* aAnchorFrame) const {
+ // Get the root frame for a reference
+ nsIFrame* rootFrame = aRootPresContext->PresShell()->GetRootFrame();
+
+ // The dimensions of the anchor
+ nsRect anchorRect = aAnchorFrame->GetRectRelativeToSelf();
+
+ // Relative to the root
+ anchorRect = nsLayoutUtils::TransformFrameRectToAncestor(
+ aAnchorFrame, anchorRect, rootFrame);
+ // Relative to the screen
+ anchorRect.MoveBy(rootFrame->GetScreenRectInAppUnits().TopLeft());
+
+ // In its own app units
+ return anchorRect.ScaleToOtherAppUnitsRoundOut(
+ aRootPresContext->AppUnitsPerDevPixel(),
+ PresContext()->AppUnitsPerDevPixel());
+}
+
+static nsIFrame* MaybeDelegatedAnchorFrame(nsIFrame* aFrame) {
+ if (!aFrame) {
+ return nullptr;
+ }
+ if (auto* element = Element::FromNodeOrNull(aFrame->GetContent())) {
+ if (element->HasAttr(nsGkAtoms::delegatesanchor)) {
+ for (nsIFrame* f : aFrame->PrincipalChildList()) {
+ if (!f->IsPlaceholderFrame()) {
+ return f;
+ }
+ }
+ }
+ }
+ return aFrame;
+}
+
+auto nsMenuPopupFrame::GetRects(const nsSize& aPrefSize) const -> Rects {
+ if (NS_WARN_IF(aPrefSize == nsSize(-1, -1))) {
+ // Return early if the popup hasn't been laid out yet. On Windows, this can
+ // happen when using a drag popup before it opens.
+ return {};
+ }
+
+ nsPresContext* pc = PresContext();
+ nsIFrame* rootFrame = pc->PresShell()->GetRootFrame();
+ NS_ASSERTION(rootFrame->GetView() && GetView() &&
+ rootFrame->GetView() == GetView()->GetParent(),
+ "rootFrame's view is not our view's parent???");
+
+ // Indicators of whether the popup should be flipped or resized.
+ FlipStyle hFlip = FlipStyle_None, vFlip = FlipStyle_None;
+
+ const nsMargin margin = GetMargin();
+
+ // the screen rectangle of the root frame, in dev pixels.
+ const nsRect rootScreenRect = rootFrame->GetScreenRectInAppUnits();
+
+ const bool isNoAutoHide = IsNoAutoHide();
+ const PopupLevel popupLevel = GetPopupLevel(isNoAutoHide);
+
+ Rects result;
+
+ // Set the popup's size to the preferred size. Below, this size will be
+ // adjusted to fit on the screen or within the content area. If the anchor is
+ // sized to the popup, use the anchor's width instead of the preferred width.
+ result.mUsedRect = nsRect(nsPoint(), aPrefSize);
+
+ const bool anchored = IsAnchored();
+ if (anchored) {
+ // In order to deal with transforms, we need the root prescontext:
+ nsPresContext* rootPc = pc->GetRootPresContext();
+ if (NS_WARN_IF(!rootPc)) {
+ // If we can't reach a root pres context, don't bother continuing.
+ return result;
+ }
+
+ result.mAnchorRect = result.mUntransformedAnchorRect = [&] {
+ // If anchored to a rectangle, use that rectangle. Otherwise, determine
+ // the rectangle from the anchor.
+ if (mAnchorType == MenuPopupAnchorType_Rect) {
+ return mScreenRect;
+ }
+ // if the frame is not specified, use the anchor node passed to OpenPopup.
+ // If that wasn't specified either, use the root frame. Note that
+ // mAnchorContent might be a different document so its presshell must be
+ // used.
+ nsIFrame* anchorFrame = GetAnchorFrame();
+ if (!anchorFrame) {
+ return rootScreenRect;
+ }
+ return ComputeAnchorRect(rootPc, anchorFrame);
+ }();
+
+ // if we are anchored, there are certain things we don't want to do when
+ // repositioning the popup to fit on the screen, such as end up positioned
+ // over the anchor, for instance a popup appearing over the menu label.
+ // When doing this reposition, we want to move the popup to the side with
+ // the most room. The combination of anchor and alignment dictate if we
+ // readjust above/below or to the left/right.
+ if (mAnchorContent || mAnchorType == MenuPopupAnchorType_Rect) {
+ // move the popup according to the anchor and alignment. This will also
+ // tell us which axis the popup is flush against in case we have to move
+ // it around later. The AdjustPositionForAnchorAlign method accounts for
+ // the popup's margin.
+ result.mUsedRect.MoveTo(AdjustPositionForAnchorAlign(
+ result.mAnchorRect, aPrefSize, hFlip, vFlip));
+ } else {
+ // With no anchor, the popup is positioned relative to the root frame.
+ result.mUsedRect.MoveTo(result.mAnchorRect.TopLeft() +
+ nsPoint(margin.left, margin.top));
+ }
+
+ // mXPos and mYPos specify an additional offset passed to OpenPopup that
+ // should be added to the position. We also add the offset to the anchor
+ // pos so a later flip/resize takes the offset into account.
+ // FIXME(emilio): Wayland doesn't seem to be accounting for this offset
+ // anywhere, and it probably should.
+ {
+ nsPoint offset(CSSPixel::ToAppUnits(mXPos), CSSPixel::ToAppUnits(mYPos));
+ if (IsDirectionRTL()) {
+ offset.x = -offset.x;
+ }
+ result.mUsedRect.MoveBy(offset);
+ result.mAnchorRect.MoveBy(offset);
+ }
+ } else {
+ // Not anchored, use mScreenRect
+ result.mUsedRect.MoveTo(mScreenRect.TopLeft());
+ result.mAnchorRect = result.mUntransformedAnchorRect =
+ nsRect(mScreenRect.TopLeft(), nsSize());
+
+ // Right-align RTL context menus, and apply margin and offsets as per the
+ // platform conventions.
+ if (mIsContextMenu && IsDirectionRTL()) {
+ result.mUsedRect.x -= aPrefSize.Width();
+ result.mUsedRect.MoveBy(-margin.right, margin.top);
+ } else {
+ result.mUsedRect.MoveBy(margin.left, margin.top);
+ }
+#ifdef XP_MACOSX
+ // OSX tooltips follow standard flip rule but other popups flip horizontally
+ // not vertically
+ if (mPopupType == PopupType::Tooltip) {
+ vFlip = FlipStyle_Outside;
+ } else {
+ hFlip = FlipStyle_Outside;
+ }
+#else
+ // Other OS screen positioned popups can be flipped vertically but never
+ // horizontally
+ vFlip = FlipStyle_Outside;
+#endif // #ifdef XP_MACOSX
+ }
+
+ const int32_t a2d = pc->AppUnitsPerDevPixel();
+
+ nsView* view = GetView();
+ NS_ASSERTION(view, "popup with no view");
+
+ nsIWidget* widget = view->GetWidget();
+
+ // If a panel has flip="none", don't constrain or flip it.
+ // Also, always do this for content shells, so that the popup doesn't extend
+ // outside the containing frame.
+ if (mInContentShell || mFlip != FlipType_None) {
+ const Maybe<nsRect> constraintRect =
+ GetConstraintRect(result.mAnchorRect, rootScreenRect, popupLevel);
+
+ if (constraintRect) {
+ // Ensure that anchorRect is on the constraint rect.
+ result.mAnchorRect = result.mAnchorRect.Intersect(*constraintRect);
+ // Shrink the popup down if it is larger than the constraint size
+ if (result.mUsedRect.width > constraintRect->width) {
+ result.mUsedRect.width = constraintRect->width;
+ }
+ if (result.mUsedRect.height > constraintRect->height) {
+ result.mUsedRect.height = constraintRect->height;
+ }
+ }
+
+ if (IS_WAYLAND_DISPLAY() && widget) {
+ // Shrink the popup down if it's larger than popup size received from
+ // Wayland compositor. We don't know screen size on Wayland so this is the
+ // only info we have there.
+ const nsSize waylandSize = LayoutDeviceIntRect::ToAppUnits(
+ widget->GetMoveToRectPopupSize(), a2d);
+ if (waylandSize.width > 0 && result.mUsedRect.width > waylandSize.width) {
+ LOG_WAYLAND("Wayland constraint width [%p]: %d to %d", widget,
+ result.mUsedRect.width, waylandSize.width);
+ result.mUsedRect.width = waylandSize.width;
+ }
+ if (waylandSize.height > 0 &&
+ result.mUsedRect.height > waylandSize.height) {
+ LOG_WAYLAND("Wayland constraint height [%p]: %d to %d", widget,
+ result.mUsedRect.height, waylandSize.height);
+ result.mUsedRect.height = waylandSize.height;
+ }
+ }
+
+ // At this point the anchor (anchorRect) is within the available screen
+ // area (constraintRect) and the popup is known to be no larger than the
+ // screen.
+ if (constraintRect) {
+ // We might want to "slide" an arrow if the panel is of the correct type -
+ // but we can only slide on one axis - the other axis must be "flipped or
+ // resized" as normal.
+ bool slideHorizontal = false, slideVertical = false;
+ if (mFlip == FlipType_Slide) {
+ int8_t position = GetAlignmentPosition();
+ slideHorizontal = position >= POPUPPOSITION_BEFORESTART &&
+ position <= POPUPPOSITION_AFTEREND;
+ slideVertical = position >= POPUPPOSITION_STARTBEFORE &&
+ position <= POPUPPOSITION_ENDAFTER;
+ }
+
+ // Next, check if there is enough space to show the popup at full size
+ // when positioned at screenPoint. If not, flip the popups to the opposite
+ // side of their anchor point, or resize them as necessary.
+ if (slideHorizontal) {
+ result.mUsedRect.width = SlideOrResize(
+ result.mUsedRect.x, result.mUsedRect.width, constraintRect->x,
+ constraintRect->XMost(), &result.mAlignmentOffset);
+ } else {
+ const bool endAligned =
+ IsDirectionRTL()
+ ? mPopupAlignment == POPUPALIGNMENT_TOPLEFT ||
+ mPopupAlignment == POPUPALIGNMENT_BOTTOMLEFT
+ : mPopupAlignment == POPUPALIGNMENT_TOPRIGHT ||
+ mPopupAlignment == POPUPALIGNMENT_BOTTOMRIGHT;
+ result.mUsedRect.width = FlipOrResize(
+ result.mUsedRect.x, result.mUsedRect.width, constraintRect->x,
+ constraintRect->XMost(), result.mAnchorRect.x,
+ result.mAnchorRect.XMost(), margin.left, margin.right, hFlip,
+ endAligned, &result.mHFlip);
+ }
+ if (slideVertical) {
+ result.mUsedRect.height = SlideOrResize(
+ result.mUsedRect.y, result.mUsedRect.height, constraintRect->y,
+ constraintRect->YMost(), &result.mAlignmentOffset);
+ } else {
+ bool endAligned = mPopupAlignment == POPUPALIGNMENT_BOTTOMLEFT ||
+ mPopupAlignment == POPUPALIGNMENT_BOTTOMRIGHT;
+ result.mUsedRect.height = FlipOrResize(
+ result.mUsedRect.y, result.mUsedRect.height, constraintRect->y,
+ constraintRect->YMost(), result.mAnchorRect.y,
+ result.mAnchorRect.YMost(), margin.top, margin.bottom, vFlip,
+ endAligned, &result.mVFlip);
+ }
+
+#ifdef DEBUG
+ NS_ASSERTION(constraintRect->Contains(result.mUsedRect),
+ "Popup is offscreen");
+ if (!constraintRect->Contains(result.mUsedRect)) {
+ NS_WARNING(nsPrintfCString("Popup is offscreen (%s vs. %s)",
+ ToString(constraintRect).c_str(),
+ ToString(result.mUsedRect).c_str())
+ .get());
+ }
+#endif
+ }
+ }
+ // snap the popup's position in screen coordinates to device pixels, see
+ // bug 622507, bug 961431
+ result.mUsedRect.x = pc->RoundAppUnitsToNearestDevPixels(result.mUsedRect.x);
+ result.mUsedRect.y = pc->RoundAppUnitsToNearestDevPixels(result.mUsedRect.y);
+
+ // determine the x and y position of the view by subtracting the desired
+ // screen position from the screen position of the root frame.
+ result.mViewPoint = result.mUsedRect.TopLeft() - rootScreenRect.TopLeft();
+
+ // Offset the position by the width and height of the borders and titlebar.
+ // Even though GetClientOffset should return (0, 0) when there is no titlebar
+ // or borders, we skip these calculations anyway for non-panels to save time
+ // since they will never have a titlebar.
+ if (mPopupType == PopupType::Panel && widget) {
+ result.mClientOffset = widget->GetClientOffset();
+ result.mViewPoint +=
+ LayoutDeviceIntPoint::ToAppUnits(result.mClientOffset, a2d);
+ }
+
+ return result;
+}
+
+void nsMenuPopupFrame::SetPopupPosition(bool aIsMove) {
+ if (aIsMove && (mPrefSize.width == -1 || mPrefSize.height == -1)) {
+ return;
+ }
+
+ auto rects = GetRects(mPrefSize);
+ if (rects.mUsedRect.Size() != mRect.Size()) {
+ MOZ_ASSERT(!HasAnyStateBits(NS_FRAME_IN_REFLOW));
+ // We need to resize on top of moving, trigger an actual reflow.
+ PresShell()->FrameNeedsReflow(this, IntrinsicDirty::FrameAndAncestors,
+ NS_FRAME_IS_DIRTY);
+ return;
+ }
+ PerformMove(rects);
+}
+
+void nsMenuPopupFrame::PerformMove(const Rects& aRects) {
+ auto* ps = PresShell();
+
+ // We're just moving, sync frame position and offset as needed.
+ ps->GetViewManager()->MoveViewTo(GetView(), aRects.mViewPoint.x,
+ aRects.mViewPoint.y);
+
+ // Now that we've positioned the view, sync up the frame's origin.
+ nsBlockFrame::SetPosition(aRects.mViewPoint -
+ GetParent()->GetOffsetTo(ps->GetRootFrame()));
+
+ // If the popup is in the positioned state or if it is shown and the position
+ // or size changed, dispatch a popuppositioned event if the popup wants it.
+ if (mPopupState == ePopupPositioning ||
+ (mPopupState == ePopupShown &&
+ !aRects.mUsedRect.IsEqualEdges(mUsedScreenRect)) ||
+ (mPopupState == ePopupShown &&
+ aRects.mAlignmentOffset != mAlignmentOffset)) {
+ mUsedScreenRect = aRects.mUsedRect;
+ if (!HasAnyStateBits(NS_FRAME_FIRST_REFLOW) && !mPendingPositionedEvent) {
+ mPendingPositionedEvent =
+ nsXULPopupPositionedEvent::DispatchIfNeeded(mContent->AsElement());
+ }
+ }
+
+ if (!mPositionedByMoveToRect) {
+ mUntransformedAnchorRect = aRects.mUntransformedAnchorRect;
+ }
+
+ mAlignmentOffset = aRects.mAlignmentOffset;
+ mLastClientOffset = aRects.mClientOffset;
+ mHFlip = aRects.mHFlip;
+ mVFlip = aRects.mVFlip;
+
+ // If this is a noautohide popup, set the screen coordinates of the popup.
+ // This way, the popup stays at the location where it was opened even when the
+ // window is moved. Popups at the parent level follow the parent window as it
+ // is moved and remained anchored, so we want to maintain the anchoring
+ // instead.
+ //
+ // FIXME: This suffers from issues like bug 1823552, where constraints imposed
+ // by the anchor are lost, but this is super-old behavior.
+ const bool fixPositionToPoint =
+ IsNoAutoHide() && (GetPopupLevel() != PopupLevel::Parent ||
+ mAnchorType == MenuPopupAnchorType_Rect);
+ if (fixPositionToPoint) {
+ // Account for the margin that will end up being added to the screen
+ // coordinate the next time SetPopupPosition is called.
+ const auto& margin = GetMargin();
+ mAnchorType = MenuPopupAnchorType_Point;
+ mScreenRect.x = aRects.mUsedRect.x - margin.left;
+ mScreenRect.y = aRects.mUsedRect.y - margin.top;
+ }
+
+ // For anchored popups that shouldn't follow the anchor, fix the original
+ // anchor rect.
+ if (IsAnchored() && !ShouldFollowAnchor() && !mUsedScreenRect.IsEmpty() &&
+ mAnchorType != MenuPopupAnchorType_Rect) {
+ mAnchorType = MenuPopupAnchorType_Rect;
+ mScreenRect = aRects.mUntransformedAnchorRect;
+ }
+
+ // NOTE(emilio): This call below is kind of a workaround, but we need to do
+ // this here because some position changes don't go through the
+ // view system -> popup manager, like:
+ //
+ // https://searchfox.org/mozilla-central/rev/477950cf9ca9c9bb5ff6f34e0d0f6ca4718ea798/widget/gtk/nsWindow.cpp#3847
+ //
+ // So this might be the last chance we have to set the remote browser's
+ // position.
+ //
+ // Ultimately this probably wants to get fixed in the widget size of things,
+ // but given this is worst-case a redundant DOM traversal, and that popups
+ // usually don't have all that much content, this is probably an ok
+ // workaround.
+ WidgetPositionOrSizeDidChange();
+}
+
+void nsMenuPopupFrame::WidgetPositionOrSizeDidChange() {
+ // In the case this popup has remote contents having OOP iframes, it's
+ // possible that OOP iframe's nsSubDocumentFrame has been already reflowed
+ // thus, we will never have a chance to tell this parent browser's position
+ // update to the OOP documents without notifying it explicitly.
+ if (!HasRemoteContent()) {
+ return;
+ }
+ for (nsIContent* content = mContent->GetFirstChild(); content;
+ content = content->GetNextNode(mContent)) {
+ if (content->IsXULElement(nsGkAtoms::browser) &&
+ content->AsElement()->AttrValueIs(kNameSpaceID_None, nsGkAtoms::remote,
+ nsGkAtoms::_true, eIgnoreCase)) {
+ if (auto* browserParent = dom::BrowserParent::GetFrom(content)) {
+ browserParent->NotifyPositionUpdatedForContentsInPopup();
+ }
+ }
+ }
+}
+
+Maybe<nsRect> nsMenuPopupFrame::GetConstraintRect(
+ const nsRect& aAnchorRect, const nsRect& aRootScreenRect,
+ PopupLevel aPopupLevel) const {
+ const nsPresContext* pc = PresContext();
+ const int32_t a2d = PresContext()->AppUnitsPerDevPixel();
+ Maybe<nsRect> result;
+
+ auto AddConstraint = [&result](const nsRect& aConstraint) {
+ if (result) {
+ *result = result->Intersect(aConstraint);
+ } else {
+ result.emplace(aConstraint);
+ }
+ };
+
+ // Determine the available screen space. It will be reduced by the OS chrome
+ // such as menubars. It addition, for content shells, it will be the area of
+ // the content rather than the screen.
+ // In Wayland we can't use the screen rect because we can't know absolute
+ // window position.
+ if (!IS_WAYLAND_DISPLAY()) {
+ const DesktopToLayoutDeviceScale scale =
+ pc->DeviceContext()->GetDesktopToDeviceScale();
+ // For content shells, get the screen where the root frame is located. This
+ // is because we need to constrain the content to this content area, so we
+ // should use the same screen. Otherwise, use the screen where the anchor is
+ // located.
+ const nsRect& rect = mInContentShell ? aRootScreenRect : aAnchorRect;
+ auto desktopRect = DesktopIntRect::RoundOut(
+ LayoutDeviceRect::FromAppUnits(rect, a2d) / scale);
+ desktopRect.width = std::max(1, desktopRect.width);
+ desktopRect.height = std::max(1, desktopRect.height);
+
+ RefPtr<nsIScreen> screen =
+ widget::ScreenManager::GetSingleton().ScreenForRect(desktopRect);
+ MOZ_ASSERT(screen, "We always fall back to the primary screen");
+ // Non-top-level popups (which will always be panels) should never overlap
+ // the OS bar.
+ const bool canOverlapOSBar =
+ aPopupLevel == PopupLevel::Top &&
+ LookAndFeel::GetInt(LookAndFeel::IntID::MenusCanOverlapOSBar) &&
+ !mInContentShell;
+ // Get the total screen area if the popup is allowed to overlap it.
+ const auto screenRect =
+ canOverlapOSBar ? screen->GetRect() : screen->GetAvailRect();
+ AddConstraint(LayoutDeviceRect::ToAppUnits(screenRect, a2d));
+ }
+
+ if (mInContentShell) {
+ // For content shells, clip to the client area rather than the screen area
+ AddConstraint(aRootScreenRect);
+ } else if (!mOverrideConstraintRect.IsEmpty()) {
+ AddConstraint(mOverrideConstraintRect);
+ // This is currently only used for <select> elements where we want to
+ // constrain vertically to the screen but not horizontally, so do the
+ // intersection and then reset the horizontal values.
+ //
+ // FIXME(emilio): This doesn't make any sense to me...
+ result->x = mOverrideConstraintRect.x;
+ result->width = mOverrideConstraintRect.width;
+ }
+
+ // Expand the allowable screen rect by the input margin (which can't be
+ // interacted with).
+ if (result) {
+ const nscoord inputMargin =
+ StyleUIReset()->mMozWindowInputRegionMargin.ToAppUnits();
+ result->Inflate(inputMargin);
+ }
+ return result;
+}
+
+ConsumeOutsideClicksResult nsMenuPopupFrame::ConsumeOutsideClicks() {
+ if (mContent->AsElement()->AttrValueIs(kNameSpaceID_None,
+ nsGkAtoms::consumeoutsideclicks,
+ nsGkAtoms::_true, eCaseMatters)) {
+ return ConsumeOutsideClicks_True;
+ }
+ if (mContent->AsElement()->AttrValueIs(kNameSpaceID_None,
+ nsGkAtoms::consumeoutsideclicks,
+ nsGkAtoms::_false, eCaseMatters)) {
+ return ConsumeOutsideClicks_ParentOnly;
+ }
+ if (mContent->AsElement()->AttrValueIs(kNameSpaceID_None,
+ nsGkAtoms::consumeoutsideclicks,
+ nsGkAtoms::never, eCaseMatters)) {
+ return ConsumeOutsideClicks_Never;
+ }
+
+ nsCOMPtr<nsIContent> parentContent = mContent->GetParent();
+ if (parentContent) {
+ dom::NodeInfo* ni = parentContent->NodeInfo();
+ if (ni->Equals(nsGkAtoms::menulist, kNameSpaceID_XUL)) {
+ return ConsumeOutsideClicks_True; // Consume outside clicks for combo
+ // boxes on all platforms
+ }
+#if defined(XP_WIN)
+ // Don't consume outside clicks for menus in Windows
+ if (ni->Equals(nsGkAtoms::menu, kNameSpaceID_XUL) ||
+ ni->Equals(nsGkAtoms::popupset, kNameSpaceID_XUL) ||
+ ((ni->Equals(nsGkAtoms::button, kNameSpaceID_XUL) ||
+ ni->Equals(nsGkAtoms::toolbarbutton, kNameSpaceID_XUL)) &&
+ parentContent->AsElement()->AttrValueIs(
+ kNameSpaceID_None, nsGkAtoms::type, nsGkAtoms::menu,
+ eCaseMatters))) {
+ return ConsumeOutsideClicks_Never;
+ }
+#endif
+ }
+
+ return ConsumeOutsideClicks_True;
+}
+
+static nsIScrollableFrame* DoGetScrollFrame(const nsIFrame* aFrame) {
+ if (const nsIScrollableFrame* sf = do_QueryFrame(aFrame)) {
+ return const_cast<nsIScrollableFrame*>(sf);
+ }
+ for (nsIFrame* childFrame : aFrame->PrincipalChildList()) {
+ if (auto* sf = DoGetScrollFrame(childFrame)) {
+ return sf;
+ }
+ }
+ return nullptr;
+}
+
+// XXXroc this is megalame. Fossicking around for a frame of the right
+// type is a recipe for disaster in the long term.
+nsIScrollableFrame* nsMenuPopupFrame::GetScrollFrame() const {
+ return DoGetScrollFrame(this);
+}
+
+void nsMenuPopupFrame::ChangeByPage(bool aIsUp) {
+ // Only scroll by page within menulists.
+ if (!IsMenuList()) {
+ return;
+ }
+
+ nsIScrollableFrame* scrollframe = GetScrollFrame();
+
+ RefPtr popup = &PopupElement();
+ XULButtonElement* currentMenu = popup->GetActiveMenuChild();
+ XULButtonElement* newMenu = nullptr;
+ if (!currentMenu) {
+ // If there is no current menu item, get the first item. When moving up,
+ // just use this as the newMenu and leave currentMenu null so that no check
+ // for a later element is performed. When moving down, set currentMenu so
+ // that we look for one page down from the first item.
+ newMenu = popup->GetFirstMenuItem();
+ if (!aIsUp) {
+ currentMenu = newMenu;
+ }
+ }
+
+ if (currentMenu && currentMenu->GetPrimaryFrame()) {
+ const nscoord scrollHeight =
+ scrollframe ? scrollframe->GetScrollPortRect().height : mRect.height;
+ const nsRect currentRect = currentMenu->GetPrimaryFrame()->GetRect();
+ const XULButtonElement* startMenu = currentMenu;
+
+ // Get the position of the current item and add or subtract one popup's
+ // height to or from it.
+ const nscoord targetPos = aIsUp ? currentRect.YMost() - scrollHeight
+ : currentRect.y + scrollHeight;
+ // Look for the next child which is just past the target position. This
+ // child will need to be selected.
+ for (; currentMenu;
+ currentMenu = aIsUp ? popup->GetPrevMenuItemFrom(*currentMenu)
+ : popup->GetNextMenuItemFrom(*currentMenu)) {
+ if (!currentMenu->GetPrimaryFrame()) {
+ continue;
+ }
+ const nsRect curRect = currentMenu->GetPrimaryFrame()->GetRect();
+ const nscoord curPos = aIsUp ? curRect.y : curRect.YMost();
+ // If the right position was found, break out. Otherwise, look for another
+ // item.
+ if (aIsUp ? (curPos < targetPos) : (curPos > targetPos)) {
+ if (!newMenu || newMenu == startMenu) {
+ newMenu = currentMenu;
+ }
+ break;
+ }
+
+ // Assign this item to newMenu. This item will be selected in case we
+ // don't find any more.
+ newMenu = currentMenu;
+ }
+ }
+
+ // Select the new menuitem.
+ if (RefPtr newMenuRef = newMenu) {
+ popup->SetActiveMenuChild(newMenuRef);
+ }
+}
+
+dom::XULPopupElement& nsMenuPopupFrame::PopupElement() const {
+ auto* popup = dom::XULPopupElement::FromNode(GetContent());
+ MOZ_DIAGNOSTIC_ASSERT(popup);
+ return *popup;
+}
+
+XULButtonElement* nsMenuPopupFrame::GetCurrentMenuItem() const {
+ return PopupElement().GetActiveMenuChild();
+}
+
+nsIFrame* nsMenuPopupFrame::GetCurrentMenuItemFrame() const {
+ auto* child = GetCurrentMenuItem();
+ return child ? child->GetPrimaryFrame() : nullptr;
+}
+
+void nsMenuPopupFrame::HandleEnterKeyPress(WidgetEvent& aEvent) {
+ mIncrementalString.Truncate();
+ RefPtr popup = &PopupElement();
+ popup->HandleEnterKeyPress(aEvent);
+}
+
+XULButtonElement* nsMenuPopupFrame::FindMenuWithShortcut(
+ mozilla::dom::KeyboardEvent& aKeyEvent, bool& aDoAction) {
+ uint32_t charCode = aKeyEvent.CharCode();
+ uint32_t keyCode = aKeyEvent.KeyCode();
+
+ aDoAction = false;
+
+ // Enumerate over our list of frames.
+ const bool isMenu = !IsMenuList();
+ TimeStamp keyTime = aKeyEvent.WidgetEventPtr()->mTimeStamp;
+ if (charCode == 0) {
+ if (keyCode == dom::KeyboardEvent_Binding::DOM_VK_BACK_SPACE) {
+ if (!isMenu && !mIncrementalString.IsEmpty()) {
+ mIncrementalString.SetLength(mIncrementalString.Length() - 1);
+ return nullptr;
+ }
+#ifdef XP_WIN
+ if (nsCOMPtr<nsISound> sound = do_GetService("@mozilla.org/sound;1")) {
+ sound->Beep();
+ }
+#endif // #ifdef XP_WIN
+ }
+ return nullptr;
+ }
+ char16_t uniChar = ToLowerCase(static_cast<char16_t>(charCode));
+ if (isMenu) {
+ // Menu supports only first-letter navigation
+ mIncrementalString = uniChar;
+ } else if (IsWithinIncrementalTime(keyTime)) {
+ mIncrementalString.Append(uniChar);
+ } else {
+ // Interval too long, treat as new typing
+ mIncrementalString = uniChar;
+ }
+
+ // See bug 188199 & 192346, if all letters in incremental string are same,
+ // just try to match the first one
+ nsAutoString incrementalString(mIncrementalString);
+ uint32_t charIndex = 1, stringLength = incrementalString.Length();
+ while (charIndex < stringLength &&
+ incrementalString[charIndex] == incrementalString[charIndex - 1]) {
+ charIndex++;
+ }
+ if (charIndex == stringLength) {
+ incrementalString.Truncate(1);
+ stringLength = 1;
+ }
+
+ sLastKeyTime = keyTime;
+
+ auto* item =
+ PopupElement().FindMenuWithShortcut(incrementalString, aDoAction);
+ if (item) {
+ return item;
+ }
+
+ // If we don't match anything, rollback the last typing
+ mIncrementalString.SetLength(mIncrementalString.Length() - 1);
+
+ // didn't find a matching menu item
+#ifdef XP_WIN
+ // behavior on Windows - this item is in a menu popup off of the
+ // menu bar, so beep and do nothing else
+ if (isMenu) {
+ if (nsCOMPtr<nsISound> sound = do_GetService("@mozilla.org/sound;1")) {
+ sound->Beep();
+ }
+ }
+#endif // #ifdef XP_WIN
+
+ return nullptr;
+}
+
+nsIWidget* nsMenuPopupFrame::GetWidget() const {
+ return mView ? mView->GetWidget() : nullptr;
+}
+
+// helpers /////////////////////////////////////////////////////////////
+
+nsresult nsMenuPopupFrame::AttributeChanged(int32_t aNameSpaceID,
+ nsAtom* aAttribute,
+ int32_t aModType)
+
+{
+ nsresult rv =
+ nsBlockFrame::AttributeChanged(aNameSpaceID, aAttribute, aModType);
+
+ if (aAttribute == nsGkAtoms::left || aAttribute == nsGkAtoms::top) {
+ MoveToAttributePosition();
+ }
+
+ if (aAttribute == nsGkAtoms::remote) {
+ // When the remote attribute changes, we need to create a new widget to
+ // ensure that it has the correct compositor and transparency settings to
+ // match the new value.
+ PrepareWidget(true);
+ }
+
+ if (aAttribute == nsGkAtoms::followanchor) {
+ if (nsXULPopupManager* pm = nsXULPopupManager::GetInstance()) {
+ pm->UpdateFollowAnchor(this);
+ }
+ }
+
+ if (aAttribute == nsGkAtoms::label) {
+ // set the label for the titlebar
+ nsView* view = GetView();
+ if (view) {
+ nsIWidget* widget = view->GetWidget();
+ if (widget) {
+ nsAutoString title;
+ mContent->AsElement()->GetAttr(kNameSpaceID_None, nsGkAtoms::label,
+ title);
+ if (!title.IsEmpty()) {
+ widget->SetTitle(title);
+ }
+ }
+ }
+ } else if (aAttribute == nsGkAtoms::ignorekeys) {
+ nsXULPopupManager* pm = nsXULPopupManager::GetInstance();
+ if (pm) {
+ nsAutoString ignorekeys;
+ mContent->AsElement()->GetAttr(kNameSpaceID_None, nsGkAtoms::ignorekeys,
+ ignorekeys);
+ pm->UpdateIgnoreKeys(ignorekeys.EqualsLiteral("true"));
+ }
+ }
+
+ return rv;
+}
+
+void nsMenuPopupFrame::MoveToAttributePosition() {
+ // Move the widget around when the user sets the |left| and |top| attributes.
+ // Note that this is not the best way to move the widget, as it results in
+ // lots of FE notifications and is likely to be slow as molasses. Use |moveTo|
+ // on the element if possible.
+ nsAutoString left, top;
+ mContent->AsElement()->GetAttr(kNameSpaceID_None, nsGkAtoms::left, left);
+ mContent->AsElement()->GetAttr(kNameSpaceID_None, nsGkAtoms::top, top);
+ nsresult err1, err2;
+ mozilla::CSSIntPoint pos(left.ToInteger(&err1), top.ToInteger(&err2));
+
+ if (NS_SUCCEEDED(err1) && NS_SUCCEEDED(err2)) MoveTo(pos, false);
+
+ PresShell()->FrameNeedsReflow(
+ this, IntrinsicDirty::FrameAncestorsAndDescendants, NS_FRAME_IS_DIRTY);
+}
+
+void nsMenuPopupFrame::Destroy(DestroyContext& aContext) {
+ // XXX: Currently we don't fire popuphidden for these popups, that seems wrong
+ // but alas, also pre-existing.
+ HidePopup(/* aDeselectMenu = */ false, ePopupClosed,
+ /* aFromFrameDestruction = */ true);
+
+ if (RefPtr<nsXULPopupManager> pm = nsXULPopupManager::GetInstance()) {
+ pm->PopupDestroyed(this);
+ }
+
+ nsBlockFrame::Destroy(aContext);
+}
+
+nsMargin nsMenuPopupFrame::GetMargin() const {
+ nsMargin margin;
+ StyleMargin()->GetMargin(margin);
+ if (mIsTopLevelContextMenu) {
+ const CSSIntPoint offset(
+ LookAndFeel::GetInt(LookAndFeel::IntID::ContextMenuOffsetHorizontal),
+ LookAndFeel::GetInt(LookAndFeel::IntID::ContextMenuOffsetVertical));
+ auto auOffset = CSSIntPoint::ToAppUnits(offset);
+ margin.top += auOffset.y;
+ margin.bottom += auOffset.y;
+ margin.left += auOffset.x;
+ margin.right += auOffset.x;
+ }
+ return margin;
+}
+
+void nsMenuPopupFrame::MoveTo(const CSSPoint& aPos, bool aUpdateAttrs,
+ bool aByMoveToRect) {
+ nsIWidget* widget = GetWidget();
+ nsPoint appUnitsPos = CSSPixel::ToAppUnits(aPos);
+
+ // reposition the popup at the specified coordinates. Don't clear the anchor
+ // and position, because the popup can be reset to its anchor position by
+ // using (-1, -1) as coordinates.
+ //
+ // Subtract off the margin as it will be added to the position when
+ // SetPopupPosition is called.
+ {
+ nsMargin margin = GetMargin();
+ if (mIsContextMenu && IsDirectionRTL()) {
+ appUnitsPos.x += margin.right + mRect.Width();
+ } else {
+ appUnitsPos.x -= margin.left;
+ }
+ appUnitsPos.y -= margin.top;
+ }
+
+ if (mScreenRect.TopLeft() == appUnitsPos &&
+ (!widget || widget->GetClientOffset() == mLastClientOffset)) {
+ return;
+ }
+
+ mPositionedByMoveToRect = aByMoveToRect;
+ mScreenRect.MoveTo(appUnitsPos);
+ if (mAnchorType == MenuPopupAnchorType_Rect) {
+ // This ensures that the anchor width is still honored, to prevent it from
+ // changing spuriously.
+ mScreenRect.height = 0;
+ // But we still need to make sure that our top left position ends up in
+ // appUnitsPos.
+ mPopupAlignment = POPUPALIGNMENT_TOPLEFT;
+ mPopupAnchor = POPUPALIGNMENT_BOTTOMLEFT;
+ mXPos = mYPos = 0;
+ } else {
+ mAnchorType = MenuPopupAnchorType_Point;
+ }
+
+ SetPopupPosition(true);
+
+ RefPtr<Element> popup = mContent->AsElement();
+ if (aUpdateAttrs &&
+ (popup->HasAttr(nsGkAtoms::left) || popup->HasAttr(nsGkAtoms::top))) {
+ nsAutoString left, top;
+ left.AppendInt(RoundedToInt(aPos).x);
+ top.AppendInt(RoundedToInt(aPos).y);
+ popup->SetAttr(kNameSpaceID_None, nsGkAtoms::left, left, false);
+ popup->SetAttr(kNameSpaceID_None, nsGkAtoms::top, top, false);
+ }
+}
+
+void nsMenuPopupFrame::MoveToAnchor(nsIContent* aAnchorContent,
+ const nsAString& aPosition, int32_t aXPos,
+ int32_t aYPos, bool aAttributesOverride) {
+ NS_ASSERTION(IsVisible(), "popup must be visible to move it");
+
+ nsPopupState oldstate = mPopupState;
+ InitializePopup(aAnchorContent, mTriggerContent, aPosition, aXPos, aYPos,
+ MenuPopupAnchorType_Node, aAttributesOverride);
+ // InitializePopup changed the state so reset it.
+ mPopupState = oldstate;
+
+ // Pass false here so that flipping and adjusting to fit on the screen happen.
+ SetPopupPosition(false);
+}
+
+int8_t nsMenuPopupFrame::GetAlignmentPosition() const {
+ // The code below handles most cases of alignment, anchor and position values.
+ // Those that are not handled just return POPUPPOSITION_UNKNOWN.
+
+ if (mPosition == POPUPPOSITION_OVERLAP ||
+ mPosition == POPUPPOSITION_AFTERPOINTER ||
+ mPosition == POPUPPOSITION_SELECTION) {
+ return mPosition;
+ }
+
+ int8_t position = mPosition;
+
+ if (position == POPUPPOSITION_UNKNOWN) {
+ switch (mPopupAnchor) {
+ case POPUPALIGNMENT_BOTTOMRIGHT:
+ case POPUPALIGNMENT_BOTTOMLEFT:
+ case POPUPALIGNMENT_BOTTOMCENTER:
+ position = mPopupAlignment == POPUPALIGNMENT_TOPRIGHT
+ ? POPUPPOSITION_AFTEREND
+ : POPUPPOSITION_AFTERSTART;
+ break;
+ case POPUPALIGNMENT_TOPRIGHT:
+ case POPUPALIGNMENT_TOPLEFT:
+ case POPUPALIGNMENT_TOPCENTER:
+ position = mPopupAlignment == POPUPALIGNMENT_BOTTOMRIGHT
+ ? POPUPPOSITION_BEFOREEND
+ : POPUPPOSITION_BEFORESTART;
+ break;
+ case POPUPALIGNMENT_LEFTCENTER:
+ position = mPopupAlignment == POPUPALIGNMENT_BOTTOMRIGHT
+ ? POPUPPOSITION_STARTAFTER
+ : POPUPPOSITION_STARTBEFORE;
+ break;
+ case POPUPALIGNMENT_RIGHTCENTER:
+ position = mPopupAlignment == POPUPALIGNMENT_BOTTOMLEFT
+ ? POPUPPOSITION_ENDAFTER
+ : POPUPPOSITION_ENDBEFORE;
+ break;
+ default:
+ break;
+ }
+ }
+
+ if (mHFlip) {
+ position = POPUPPOSITION_HFLIP(position);
+ }
+
+ if (mVFlip) {
+ position = POPUPPOSITION_VFLIP(position);
+ }
+
+ return position;
+}
+
+/**
+ * KEEP THIS IN SYNC WITH nsIFrame::CreateView
+ * as much as possible. Until we get rid of views finally...
+ */
+void nsMenuPopupFrame::CreatePopupView() {
+ if (HasView()) {
+ return;
+ }
+
+ nsViewManager* viewManager = PresContext()->GetPresShell()->GetViewManager();
+ NS_ASSERTION(nullptr != viewManager, "null view manager");
+
+ // Create a view
+ nsView* parentView = viewManager->GetRootView();
+ auto visibility = ViewVisibility::Hide;
+
+ NS_ASSERTION(parentView, "no parent view");
+
+ // Create a view
+ nsView* view = viewManager->CreateView(GetRect(), parentView, visibility);
+ auto zIndex = ZIndex();
+ viewManager->SetViewZIndex(view, zIndex.isNothing(), zIndex.valueOr(0));
+ // XXX put view last in document order until we can do better
+ viewManager->InsertChild(parentView, view, nullptr, true);
+
+ // Remember our view
+ SetView(view);
+
+ NS_FRAME_LOG(
+ NS_FRAME_TRACE_CALLS,
+ ("nsMenuPopupFrame::CreatePopupView: frame=%p view=%p", this, view));
+}
+
+bool nsMenuPopupFrame::ShouldFollowAnchor() const {
+ if (mAnchorType != MenuPopupAnchorType_Node || !mAnchorContent) {
+ return false;
+ }
+
+ // Follow anchor mode is used when followanchor="true" is set or for arrow
+ // panels.
+ if (mContent->AsElement()->AttrValueIs(kNameSpaceID_None,
+ nsGkAtoms::followanchor,
+ nsGkAtoms::_true, eCaseMatters)) {
+ return true;
+ }
+
+ if (mContent->AsElement()->AttrValueIs(kNameSpaceID_None,
+ nsGkAtoms::followanchor,
+ nsGkAtoms::_false, eCaseMatters)) {
+ return false;
+ }
+
+ return mPopupType == PopupType::Panel &&
+ mContent->AsElement()->AttrValueIs(kNameSpaceID_None, nsGkAtoms::type,
+ nsGkAtoms::arrow, eCaseMatters);
+}
+
+bool nsMenuPopupFrame::ShouldFollowAnchor(nsRect& aRect) {
+ if (!ShouldFollowAnchor()) {
+ return false;
+ }
+
+ if (nsIFrame* anchorFrame = GetAnchorFrame()) {
+ if (nsPresContext* rootPresContext = PresContext()->GetRootPresContext()) {
+ aRect = ComputeAnchorRect(rootPresContext, anchorFrame);
+ }
+ }
+
+ return true;
+}
+
+bool nsMenuPopupFrame::IsDirectionRTL() const {
+ const nsIFrame* anchor = GetAnchorFrame();
+ const nsIFrame* f = anchor ? anchor : this;
+ return f->StyleVisibility()->mDirection == StyleDirection::Rtl;
+}
+
+nsIFrame* nsMenuPopupFrame::GetAnchorFrame() const {
+ nsIContent* anchor = mAnchorContent;
+ if (!anchor) {
+ return nullptr;
+ }
+ return MaybeDelegatedAnchorFrame(anchor->GetPrimaryFrame());
+}
+
+void nsMenuPopupFrame::CheckForAnchorChange(nsRect& aRect) {
+ // Don't update if the popup isn't visible or we shouldn't be following the
+ // anchor.
+ if (!IsVisible() || !ShouldFollowAnchor()) {
+ return;
+ }
+
+ bool shouldHide = false;
+
+ nsPresContext* rootPresContext = PresContext()->GetRootPresContext();
+
+ // If the frame for the anchor has gone away, hide the popup.
+ nsIFrame* anchor = GetAnchorFrame();
+ if (!anchor || !rootPresContext) {
+ shouldHide = true;
+ } else if (!anchor->IsVisibleConsideringAncestors(
+ VISIBILITY_CROSS_CHROME_CONTENT_BOUNDARY)) {
+ // If the anchor is now inside something that is invisible, hide the popup.
+ shouldHide = true;
+ } else {
+ // If the anchor is now inside a hidden parent popup, hide the popup.
+ nsIFrame* frame = anchor;
+ while (frame) {
+ nsMenuPopupFrame* popup = do_QueryFrame(frame);
+ if (popup && popup->PopupState() != ePopupShown) {
+ shouldHide = true;
+ break;
+ }
+
+ frame = frame->GetParent();
+ }
+ }
+
+ if (shouldHide) {
+ nsXULPopupManager* pm = nsXULPopupManager::GetInstance();
+ if (pm) {
+ // As the caller will be iterating over the open popups, hide
+ // asyncronously.
+ pm->HidePopup(mContent->AsElement(),
+ {HidePopupOption::DeselectMenu, HidePopupOption::Async});
+ }
+
+ return;
+ }
+
+ nsRect anchorRect = ComputeAnchorRect(rootPresContext, anchor);
+
+ // If the rectangles are different, move the popup.
+ if (!anchorRect.IsEqualEdges(aRect)) {
+ aRect = anchorRect;
+ SetPopupPosition(true);
+ }
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-04 13:04:22 +0000