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nsMenuPopupFrame.cpp
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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 "nsGkAtoms.h"
#include "nsIContent.h"
#include "nsAtom.h"
#include "nsPresContext.h"
#include "mozilla/ComputedStyle.h"
#include "nsCSSRendering.h"
#include "nsNameSpaceManager.h"
#include "nsViewManager.h"
#include "nsWidgetsCID.h"
#include "nsMenuFrame.h"
#include "nsMenuBarFrame.h"
#include "nsPopupSetFrame.h"
#include "nsPIDOMWindow.h"
#include "nsFrameManager.h"
#include "mozilla/dom/Document.h"
#include "nsRect.h"
#include "nsBoxLayoutState.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 "nsStyleConsts.h"
#include "nsStyleStructInlines.h"
#include "nsTransitionManager.h"
#include "nsDisplayList.h"
#include "nsIDOMXULSelectCntrlEl.h"
#include "mozilla/AnimationUtils.h"
#include "mozilla/BasePrincipal.h"
#include "mozilla/EventDispatcher.h"
#include "mozilla/EventStateManager.h"
#include "mozilla/EventStates.h"
#include "mozilla/Preferences.h"
#include "mozilla/LookAndFeel.h"
#include "mozilla/MouseEvents.h"
#include "mozilla/PresShell.h"
#include "mozilla/StaticPrefs_xul.h"
#include "mozilla/dom/Element.h"
#include "mozilla/dom/Event.h"
#include "mozilla/dom/KeyboardEvent.h"
#include "mozilla/dom/KeyboardEventBinding.h"
#include <algorithm>
#ifdef MOZ_WAYLAND
# include <gdk/gdk.h>
# include <gdk/gdkx.h>
# include <gdk/gdkwayland.h>
#endif /* MOZ_WAYLAND */
#include "X11UndefineNone.h"
using namespace mozilla;
using mozilla::dom::Document;
using mozilla::dom::Event;
using mozilla::dom::KeyboardEvent;
int8_t nsMenuPopupFrame::sDefaultLevelIsTop = -1;
DOMTimeStamp nsMenuPopupFrame::sLastKeyTime = 0;
// XXX, kyle.yuan@sun.com, there are 4 definitions for the same purpose:
// nsMenuPopupFrame.h, nsListControlFrame.cpp, listbox.xml, tree.xml
// need to find a good place to put them together.
// if someone changes one, please also change the other.
uint32_t nsMenuPopupFrame::sTimeoutOfIncrementalSearch = 1000;
const char kPrefIncrementalSearchTimeout[] =
"ui.menu.incremental_search.timeout";
// 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(nsBoxFrame)
//
// nsMenuPopupFrame ctor
//
nsMenuPopupFrame::nsMenuPopupFrame(ComputedStyle* aStyle,
nsPresContext* aPresContext)
: nsBoxFrame(aStyle, aPresContext, kClassID),
mCurrentMenu(nullptr),
mView(nullptr),
mPrefSize(-1, -1),
mXPos(0),
mYPos(0),
mAlignmentOffset(0),
mLastClientOffset(0, 0),
mPopupType(ePopupTypePanel),
mPopupState(ePopupClosed),
mPopupAlignment(POPUPALIGNMENT_NONE),
mPopupAnchor(POPUPALIGNMENT_NONE),
mPosition(POPUPPOSITION_UNKNOWN),
mFlip(FlipType_Default),
mIsOpenChanged(false),
mIsContextMenu(false),
mAdjustOffsetForContextMenu(false),
mGeneratedChildren(false),
mMenuCanOverlapOSBar(false),
mShouldAutoPosition(true),
mInContentShell(true),
mIsMenuLocked(false),
mMouseTransparent(false),
mIsOffset(false),
mHFlip(false),
mVFlip(false),
mPositionedOffset(0),
mAnchorType(MenuPopupAnchorType_Node) {
// 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);
Preferences::AddUintVarCache(&sTimeoutOfIncrementalSearch,
kPrefIncrementalSearchTimeout, 1000);
} // ctor
void nsMenuPopupFrame::Init(nsIContent* aContent, nsContainerFrame* aParent,
nsIFrame* aPrevInFlow) {
nsBoxFrame::Init(aContent, aParent, aPrevInFlow);
// lookup if we're allowed to overlap the OS bar (menubar/taskbar) from the
// look&feel object
mMenuCanOverlapOSBar =
LookAndFeel::GetInt(LookAndFeel::eIntID_MenusCanOverlapOSBar) != 0;
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);
mPopupType = ePopupTypePanel;
if (aContent->IsAnyOfXULElements(nsGkAtoms::menupopup, nsGkAtoms::popup)) {
mPopupType = ePopupTypeMenu;
} else if (aContent->IsXULElement(nsGkAtoms::tooltip)) {
mPopupType = ePopupTypeTooltip;
}
if (PresContext()->IsChrome()) {
mInContentShell = false;
}
// Support incontentshell=false attribute to allow popups to be displayed
// outside of the content shell. Chrome only.
if (aContent->NodePrincipal()->IsSystemPrincipal()) {
if (aContent->AsElement()->AttrValueIs(kNameSpaceID_None,
nsGkAtoms::incontentshell,
nsGkAtoms::_true, eCaseMatters)) {
mInContentShell = true;
} else if (aContent->AsElement()->AttrValueIs(
kNameSpaceID_None, nsGkAtoms::incontentshell,
nsGkAtoms::_false, eCaseMatters)) {
mInContentShell = false;
}
}
// To improve performance, create the widget for the popup only if it is not
// a leaf. Leaf popups such as menus will create their widgets later when
// the popup opens.
if (!IsLeaf() && !ourView->HasWidget()) {
CreateWidgetForView(ourView);
}
if (aContent->NodeInfo()->Equals(nsGkAtoms::tooltip, kNameSpaceID_XUL) &&
aContent->AsElement()->AttrValueIs(kNameSpaceID_None, nsGkAtoms::_default,
nsGkAtoms::_true, eIgnoreCase)) {
nsIPopupContainer* popupContainer =
nsIPopupContainer::GetPopupContainer(PresContext()->GetPresShell());
if (popupContainer) {
popupContainer->SetDefaultTooltip(aContent->AsElement());
}
}
AddStateBits(NS_FRAME_IN_POPUP);
}
bool nsMenuPopupFrame::HasRemoteContent() const {
return (!mInContentShell && mPopupType == ePopupTypePanel &&
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 == ePopupTypePanel &&
mContent->AsElement()->AttrValueIs(kNameSpaceID_None,
nsGkAtoms::noautohide,
nsGkAtoms::_true, eIgnoreCase));
}
nsPopupLevel nsMenuPopupFrame::PopupLevel(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 != ePopupTypePanel) return ePopupLevelTop;
// 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 ePopupLevelTop;
case 1:
return ePopupLevelParent;
case 2:
return ePopupLevelFloating;
}
// Panels with titlebars most likely want to be floating popups.
if (mContent->AsElement()->HasAttr(kNameSpaceID_None, nsGkAtoms::titlebar))
return ePopupLevelFloating;
// If this panel is a noautohide panel, the default is the parent level.
if (aIsNoAutoHide) return ePopupLevelParent;
// Otherwise, the result depends on the platform.
return sDefaultLevelIsTop ? ePopupLevelTop : ePopupLevelParent;
}
void nsMenuPopupFrame::EnsureWidget(bool aRecreate) {
nsView* ourView = GetView();
if (aRecreate) {
ourView->DestroyWidget();
}
if (!ourView->HasWidget()) {
NS_ASSERTION(!mGeneratedChildren && !PrincipalChildList().FirstChild(),
"Creating widget for MenuPopupFrame with children");
CreateWidgetForView(ourView);
}
}
nsresult nsMenuPopupFrame::CreateWidgetForView(nsView* aView) {
// Create a widget for ourselves.
nsWidgetInitData widgetData;
widgetData.mWindowType = eWindowType_popup;
widgetData.mBorderStyle = eBorderStyle_default;
widgetData.clipSiblings = true;
widgetData.mPopupHint = mPopupType;
widgetData.mNoAutoHide = IsNoAutoHide();
if (!mInContentShell) {
// A drag popup may be used for non-static translucent drag feedback
if (mPopupType == ePopupTypePanel &&
mContent->AsElement()->AttrValueIs(kNameSpaceID_None, nsGkAtoms::type,
nsGkAtoms::drag, eIgnoreCase)) {
widgetData.mIsDragPopup = true;
}
// If pointer-events: none; is set on the popup, then the widget should
// ignore mouse events, passing them through to the content behind.
mMouseTransparent =
StyleUI()->GetEffectivePointerEvents(this) == StylePointerEvents::None;
widgetData.mMouseTransparent = mMouseTransparent;
}
nsAutoString title;
if (widgetData.mNoAutoHide) {
if (mContent->AsElement()->AttrValueIs(kNameSpaceID_None,
nsGkAtoms::titlebar,
nsGkAtoms::normal, eCaseMatters)) {
widgetData.mBorderStyle = eBorderStyle_title;
mContent->AsElement()->GetAttr(kNameSpaceID_None, nsGkAtoms::label,
title);
if (mContent->AsElement()->AttrValueIs(kNameSpaceID_None,
nsGkAtoms::close, nsGkAtoms::_true,
eCaseMatters)) {
widgetData.mBorderStyle = static_cast<enum nsBorderStyle>(
widgetData.mBorderStyle | eBorderStyle_close);
}
}
}
bool remote = HasRemoteContent();
nsTransparencyMode mode = nsLayoutUtils::GetFrameTransparency(this, this);
nsIContent* parentContent = GetContent()->GetParent();
nsAtom* tag = nullptr;
if (parentContent && parentContent->IsXULElement())
tag = parentContent->NodeInfo()->NameAtom();
widgetData.mHasRemoteContent = remote;
widgetData.mSupportTranslucency = mode == eTransparencyTransparent;
widgetData.mDropShadow =
!(mode == eTransparencyTransparent || tag == nsGkAtoms::menulist);
widgetData.mPopupLevel = PopupLevel(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 != ePopupLevelTop) {
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, true, true);
if (NS_FAILED(rv)) {
return rv;
}
nsIWidget* widget = aView->GetWidget();
widget->SetTransparencyMode(mode);
widget->SetWindowShadowStyle(GetShadowStyle());
// 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;
}
StyleWindowShadow nsMenuPopupFrame::GetShadowStyle() {
StyleWindowShadow shadow = StyleUIReset()->mWindowShadow;
if (shadow != StyleWindowShadow::Default) return shadow;
switch (StyleDisplay()->mAppearance) {
case StyleAppearance::Tooltip:
return StyleWindowShadow::Tooltip;
case StyleAppearance::Menupopup:
return StyleWindowShadow::Menu;
default:
return StyleWindowShadow::Default;
}
}
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);
}
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(NS_LITERAL_STRING("transitionend"), this,
false);
}
NS_IMPL_ISUPPORTS_INHERITED(nsXULPopupShownEvent, Runnable,
nsIDOMEventListener);
bool nsMenuPopupFrame::IsLeafDynamic() const {
if (mGeneratedChildren) return false;
if (mPopupType != ePopupTypeMenu) {
// any panel with a type attribute, such as the autocomplete popup,
// is always generated right away.
return !mContent->AsElement()->HasAttr(kNameSpaceID_None, nsGkAtoms::type);
}
// menu popups generate their child frames lazily only when opened, so
// behave like a leaf frame. However, generate child frames normally if the
// following is true:
//
// - If the parent menu is a <menulist> unless its sizetopopup is set to
// "none".
// - For other elements, if the parent menu has a sizetopopup attribute.
//
// In these cases the size of the parent menu is dependent on the size of
// the popup, so the frames need to exist in order to calculate this size.
nsIContent* parentContent = mContent->GetParent();
if (!parentContent) {
return false;
}
if (parentContent->IsXULElement(nsGkAtoms::menulist)) {
Element* parent = parentContent->AsElement();
if (!parent->HasAttr(kNameSpaceID_None, nsGkAtoms::sizetopopup)) {
// No prop set, generate child frames normally for the
// default value ("pref").
return false;
}
nsAutoString sizedToPopup;
parent->GetAttr(kNameSpaceID_None, nsGkAtoms::sizetopopup, sizedToPopup);
// Don't generate child frame only if the property is set to none.
return sizedToPopup.EqualsLiteral("none");
}
return (!parentContent->IsElement() ||
!parentContent->AsElement()->HasAttr(kNameSpaceID_None,
nsGkAtoms::sizetopopup));
}
void nsMenuPopupFrame::DidSetComputedStyle(ComputedStyle* aOldStyle) {
nsBoxFrame::DidSetComputedStyle(aOldStyle);
if (!aOldStyle) {
return;
}
auto& newUI = *StyleUIReset();
auto& oldUI = *aOldStyle->StyleUIReset();
if (newUI.mWindowOpacity != oldUI.mWindowOpacity) {
if (nsIWidget* widget = GetWidget()) {
widget->SetWindowOpacity(newUI.mWindowOpacity);
}
}
if (newUI.mMozWindowTransform != oldUI.mMozWindowTransform) {
if (nsIWidget* widget = GetWidget()) {
widget->SetWindowTransform(ComputeWidgetTransform());
}
}
bool newMouseTransparent =
StyleUI()->GetEffectivePointerEvents(this) == StylePointerEvents::None;
bool oldMouseTransparent = aOldStyle->StyleUI()->GetEffectivePointerEvents(
this) == StylePointerEvents::None;
if (newMouseTransparent != oldMouseTransparent) {
if (nsIWidget* widget = GetWidget()) {
widget->SetWindowMouseTransparent(newMouseTransparent);
mMouseTransparent = newMouseTransparent;
}
}
}
void nsMenuPopupFrame::LayoutPopup(nsBoxLayoutState& aState,
nsIFrame* aParentMenu, bool aSizedToPopup) {
if (IsLeaf()) {
return;
}
SchedulePaint();
bool shouldPosition = true;
bool isOpen = IsOpen();
if (!isOpen) {
// if the popup is not open, only do layout while showing or if the menu
// is sized to the popup
shouldPosition =
(mPopupState == ePopupShowing || mPopupState == ePopupPositioning);
if (!shouldPosition && !aSizedToPopup) {
RemoveStateBits(NS_FRAME_FIRST_REFLOW);
return;
}
}
// if the popup has just been opened, make sure the scrolled window is at 0,0
// Don't scroll menulists as they will scroll to their selected item on their
// own.
if (mIsOpenChanged && !IsMenuList()) {
nsIScrollableFrame* scrollframe =
do_QueryFrame(nsBox::GetChildXULBox(this));
if (scrollframe) {
AutoWeakFrame weakFrame(this);
scrollframe->ScrollTo(nsPoint(0, 0), ScrollMode::Instant);
if (!weakFrame.IsAlive()) {
return;
}
}
}
// 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.
nsSize prefSize = GetXULPrefSize(aState);
nsSize minSize = GetXULMinSize(aState);
nsSize maxSize = GetXULMaxSize(aState);
if (aSizedToPopup) {
prefSize.width = aParentMenu->GetRect().width;
}
prefSize = BoundsCheck(minSize, prefSize, maxSize);
// if the size changed then set the bounds to be the preferred size
bool sizeChanged = (mPrefSize != prefSize);
if (sizeChanged) {
SetXULBounds(aState, nsRect(0, 0, prefSize.width, prefSize.height), false);
mPrefSize = prefSize;
}
bool needCallback = false;
if (shouldPosition) {
SetPopupPosition(aParentMenu, false, aSizedToPopup,
mPopupState == ePopupPositioning);
needCallback = true;
}
nsRect bounds(GetRect());
XULLayout(aState);
// if the width or height changed, readjust the popup position. This is a
// special case for tooltips where the preferred height doesn't include the
// real height for its inline element, but does once it is laid out.
// This is bug 228673 which doesn't have a simple fix.
bool rePosition = shouldPosition && (mPosition == POPUPPOSITION_SELECTION);
if (!aParentMenu) {
nsSize newsize = GetSize();
if (newsize.width > bounds.width || newsize.height > bounds.height) {
// the size after layout was larger than the preferred size,
// so set the preferred size accordingly
mPrefSize = newsize;
if (isOpen) {
rePosition = true;
needCallback = true;
}
}
}
if (rePosition) {
SetPopupPosition(aParentMenu, false, aSizedToPopup, false);
}
nsPresContext* pc = PresContext();
nsView* view = GetView();
if (sizeChanged) {
// If the size of the popup changed, apply any size constraints.
nsIWidget* widget = view->GetWidget();
if (widget) {
SetSizeConstraints(pc, widget, minSize, maxSize);
}
}
if (isOpen) {
nsViewManager* viewManager = view->GetViewManager();
nsRect rect = GetRect();
rect.x = rect.y = 0;
rect.SizeTo(BoundsCheck(minSize, rect.Size(), maxSize));
viewManager->ResizeView(view, rect);
if (mPopupState == ePopupOpening) {
mPopupState = ePopupVisible;
}
viewManager->SetViewVisibility(view, nsViewVisibility_kShow);
SyncFrameViewProperties(view);
}
// 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.
if (IsMenuList() && mCurrentMenu) {
EnsureMenuItemIsVisible(mCurrentMenu);
}
// If the animate attribute is set to open, check for a transition and wait
// for it to finish before firing the popupshown event.
if (StaticPrefs::xul_panel_animations_enabled() &&
mContent->AsElement()->AttrValueIs(kNameSpaceID_None,
nsGkAtoms::animate, nsGkAtoms::open,
eCaseMatters) &&
AnimationUtils::HasCurrentTransitions(mContent->AsElement(),
PseudoStyleType::NotPseudo)) {
mPopupShownDispatcher = new nsXULPopupShownEvent(mContent, pc);
mContent->AddSystemEventListener(NS_LITERAL_STRING("transitionend"),
mPopupShownDispatcher, false, false);
return;
}
// If there are no transitions, fire the popupshown event right away.
nsCOMPtr<nsIRunnable> event = new nsXULPopupShownEvent(GetContent(), pc);
mContent->OwnerDoc()->Dispatch(TaskCategory::Other, event.forget());
}
if (needCallback && !mReflowCallbackData.mPosted) {
pc->PresShell()->PostReflowCallback(this);
mReflowCallbackData.MarkPosted(aParentMenu, aSizedToPopup, openChanged);
}
}
bool nsMenuPopupFrame::ReflowFinished() {
SetPopupPosition(mReflowCallbackData.mAnchor, false,
mReflowCallbackData.mSizedToPopup, true);
mReflowCallbackData.Clear();
return false;
}
void nsMenuPopupFrame::ReflowCallbackCanceled() { mReflowCallbackData.Clear(); }
bool nsMenuPopupFrame::IsMenuList() {
nsIFrame* parentMenu = GetParent();
return (parentMenu && parentMenu->GetContent() &&
parentMenu->GetContent()->IsXULElement(nsGkAtoms::menulist));
}
nsIContent* nsMenuPopupFrame::GetTriggerContent(
nsMenuPopupFrame* aMenuPopupFrame) {
while (aMenuPopupFrame) {
if (aMenuPopupFrame->mTriggerContent)
return aMenuPopupFrame->mTriggerContent;
// check up the menu hierarchy until a popup with a trigger node is found
nsMenuFrame* menuFrame = do_QueryFrame(aMenuPopupFrame->GetParent());
if (!menuFrame) break;
nsMenuParent* parentPopup = menuFrame->GetMenuParent();
if (!parentPopup || !parentPopup->IsMenu()) break;
aMenuPopupFrame = static_cast<nsMenuPopupFrame*>(parentPopup);
}
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) {
EnsureWidget();
mPopupState = ePopupShowing;
mAnchorContent = aAnchorContent;
mTriggerContent = aTriggerContent;
mXPos = aXPos;
mYPos = aYPos;
mAdjustOffsetForContextMenu = false;
mVFlip = false;
mHFlip = false;
mAlignmentOffset = 0;
mPositionedOffset = 0;
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);
}
}
mScreenRect = nsIntRect(-1, -1, 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 = x;
}
if (!top.IsEmpty()) {
int32_t y = top.ToInteger(&err);
if (NS_SUCCEEDED(err)) mScreenRect.y = y;
}
}
}
void nsMenuPopupFrame::InitializePopupAtScreen(nsIContent* aTriggerContent,
int32_t aXPos, int32_t aYPos,
bool aIsContextMenu) {
EnsureWidget();
mPopupState = ePopupShowing;
mAnchorContent = nullptr;
mTriggerContent = aTriggerContent;
mScreenRect = nsIntRect(aXPos, aYPos, 0, 0);
mXPos = 0;
mYPos = 0;
mFlip = FlipType_Default;
mPopupAnchor = POPUPALIGNMENT_NONE;
mPopupAlignment = POPUPALIGNMENT_NONE;
mPosition = POPUPPOSITION_UNKNOWN;
mIsContextMenu = aIsContextMenu;
mAdjustOffsetForContextMenu = aIsContextMenu;
mAnchorType = MenuPopupAnchorType_Point;
mPositionedOffset = 0;
}
void nsMenuPopupFrame::InitializePopupAtRect(nsIContent* aTriggerContent,
const nsAString& aPosition,
const nsIntRect& aRect,
bool aAttributesOverride) {
InitializePopup(nullptr, aTriggerContent, aPosition, 0, 0,
MenuPopupAnchorType_Rect, aAttributesOverride);
mScreenRect = aRect;
}
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 == ePopupTypeMenu) {
EventStateManager* activeESM = static_cast<EventStateManager*>(
EventStateManager::GetActiveEventStateManager());
if (activeESM) {
EventStateManager::ClearGlobalActiveContent(activeESM);
}
PresShell::ReleaseCapturingContent();
}
nsMenuFrame* menuFrame = do_QueryFrame(GetParent());
if (menuFrame) {
AutoWeakFrame weakFrame(this);
menuFrame->PopupOpened();
if (!weakFrame.IsAlive()) return;
}
// do we need an actual reflow here?
// is SetPopupPosition all that is needed?
PresShell()->FrameNeedsReflow(this, IntrinsicDirty::TreeChange,
NS_FRAME_HAS_DIRTY_CHILDREN);
if (mPopupType == ePopupTypeMenu) {
nsCOMPtr<nsISound> sound(do_CreateInstance("@mozilla.org/sound;1"));
if (sound) sound->PlayEventSound(nsISound::EVENT_MENU_POPUP);
}
}
mShouldAutoPosition = true;
}
void nsMenuPopupFrame::HidePopup(bool aDeselectMenu, nsPopupState aNewState) {
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;
// 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.
if (aNewState == ePopupClosed) {
// if the popup had a trigger node set, clear the global window popup node
// as well
if (mTriggerContent) {
Document* doc = mContent->GetUncomposedDoc();
if (doc) {
if (nsPIDOMWindowOuter* win = doc->GetWindow()) {
nsCOMPtr<nsPIWindowRoot> root = win->GetTopWindowRoot();
if (root) {
root->SetPopupNode(nullptr);
}
}
}
}
mTriggerContent = nullptr;
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;
if (IsMenu()) SetCurrentMenuItem(nullptr);
mIncrementalString.Truncate();
LockMenuUntilClosed(false);
mIsOpenChanged = false;
mCurrentMenu = nullptr; // make sure no current menu is set
mHFlip = mVFlip = false;
nsView* view = GetView();
nsViewManager* viewManager = view->GetViewManager();
viewManager->SetViewVisibility(view, nsViewVisibility_kHide);
FireDOMEvent(NS_LITERAL_STRING("DOMMenuInactive"), mContent);
// 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.
NS_ASSERTION(mContent->IsElement(), "How do we have a non-element?");
EventStates state = mContent->AsElement()->State();
if (state.HasState(NS_EVENT_STATE_HOVER)) {
EventStateManager* esm = PresContext()->EventStateManager();
esm->SetContentState(nullptr, NS_EVENT_STATE_HOVER);
}
nsMenuFrame* menuFrame = do_QueryFrame(GetParent());
if (menuFrame) {
menuFrame->PopupClosed(aDeselectMenu);
}
}
nsIFrame::ReflowChildFlags nsMenuPopupFrame::GetXULLayoutFlags() {
return ReflowChildFlags::NoSizeView | ReflowChildFlags::NoMoveView;
}
nsPoint nsMenuPopupFrame::AdjustPositionForAnchorAlign(nsRect& anchorRect,
FlipStyle& aHFlip,
FlipStyle& aVFlip) {
// flip the anchor and alignment for right-to-left
int8_t popupAnchor(mPopupAnchor);
int8_t popupAlign(mPopupAlignment);