/* -*- 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 "nsStyleContext.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 "nsIDOMEvent.h"
#include "nsIDOMScreen.h"
#include "nsIDOMXULMenuListElement.h"
#include "nsIPresShell.h"
#include "nsFrameManager.h"
#include "nsIDocument.h"
#include "nsRect.h"
#include "nsIComponentManager.h"
#include "nsBoxLayoutState.h"
#include "nsIScrollableFrame.h"
#include "nsIRootBox.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 "nsBindingManager.h"
#include "nsIDocShellTreeOwner.h"
#include "nsIBaseWindow.h"
#include "nsISound.h"
#include "nsIScreenManager.h"
#include "nsIServiceManager.h"
#include "nsThemeConstants.h"
#include "nsTransitionManager.h"
#include "nsDisplayList.h"
#include "nsIDOMXULSelectCntrlItemEl.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/dom/Element.h"
#include "mozilla/dom/Event.h"
#include "mozilla/dom/KeyboardEvent.h"
#include "mozilla/dom/KeyboardEventBinding.h"
#include "mozilla/dom/PopupBoxObject.h"
#include <algorithm>
using namespace mozilla;
using mozilla::dom::KeyboardEvent;
using mozilla::dom::PopupBoxObject;
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(nsIPresShell* aPresShell,
nsStyleContext* aContext) {
return new (aPresShell) nsMenuPopupFrame(aContext);
}
NS_IMPL_FRAMEARENA_HELPERS(nsMenuPopupFrame)
NS_QUERYFRAME_HEAD(nsMenuPopupFrame)
NS_QUERYFRAME_ENTRY(nsMenuPopupFrame)
NS_QUERYFRAME_TAIL_INHERITING(nsBoxFrame)
//
// nsMenuPopupFrame ctor
//
nsMenuPopupFrame::nsMenuPopupFrame(nsStyleContext* aContext)
: nsBoxFrame(aContext, 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),
mConsumeRollupEvent(PopupBoxObject::ROLLUP_DEFAULT),
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;
nsIDocument* doc = aContent->OwnerDoc();
int32_t namespaceID;
RefPtr<nsAtom> tag =
doc->BindingManager()->ResolveTag(aContent, &namespaceID);
if (namespaceID == kNameSpaceID_XUL) {
if (tag == nsGkAtoms::menupopup || tag == nsGkAtoms::popup)
mPopupType = ePopupTypeMenu;
else if (tag == nsGkAtoms::tooltip)
mPopupType = ePopupTypeTooltip;
}
nsCOMPtr<nsIDocShellTreeItem> dsti = PresContext()->GetDocShell();
if (dsti && dsti->ItemType() == nsIDocShellTreeItem::typeChrome) {
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)) {
nsIRootBox* rootBox = nsIRootBox::GetRootBox(PresContext()->GetPresShell());
if (rootBox) {
rootBox->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 mousethrough="always" is set directly on the popup, then the widget
// should ignore mouse events, passing them through to the content behind.
mMouseTransparent = GetStateBits() & NS_FRAME_MOUSE_THROUGH_ALWAYS;
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);
#ifdef MOZ_WIDGET_GTK
if (remote) {
// Paradoxically, on Linux, setting the transparency mode to opaque will
// give us proper transparency for composited popups. The shape-mask-based
// pseudo-transparency that we use otherwise will render transparent areas
// as opaque black when compositing is enabled.
// See bug 630346.
mode = eTransparencyOpaque;
}
#endif
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;
}
uint8_t nsMenuPopupFrame::GetShadowStyle() {
uint8_t shadow = StyleUIReset()->mWindowShadow;
if (shadow != NS_STYLE_WINDOW_SHADOW_DEFAULT) return shadow;
switch (StyleDisplay()->mAppearance) {
case NS_THEME_TOOLTIP:
return NS_STYLE_WINDOW_SHADOW_TOOLTIP;
case NS_THEME_MENUPOPUP:
return NS_STYLE_WINDOW_SHADOW_MENU;
}
return NS_STYLE_WINDOW_SHADOW_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(nsIDOMEvent* aEvent) {
nsMenuPopupFrame* popup = do_QueryFrame(mPopup->GetPrimaryFrame());
nsCOMPtr<nsIDOMEventTarget> eventTarget;
aEvent->GetTarget(getter_AddRefs(eventTarget));
// Ignore events not targeted at the popup itself (ie targeted at
// descendants):
if (!SameCOMIdentity(mPopup, eventTarget)) {
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);
void nsMenuPopupFrame::SetInitialChildList(ChildListID aListID,
nsFrameList& aChildList) {
// unless the list is empty, indicate that children have been generated.
if (aListID == kPrincipalList && aChildList.NotEmpty()) {
mGeneratedChildren = true;
}
nsBoxFrame::SetInitialChildList(aListID, aChildList);
}
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 parent menu has a sizetopopup attribute. In this case 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();
return parentContent && (!parentContent->IsElement() ||
!parentContent->AsElement()->HasAttr(
kNameSpaceID_None, nsGkAtoms::sizetopopup));
}
void nsMenuPopupFrame::UpdateWidgetProperties() {
if (nsIWidget* widget = GetWidget()) {
widget->SetWindowOpacity(StyleUIReset()->mWindowOpacity);
widget->SetWindowTransform(ComputeWidgetTransform());
}
}
void nsMenuPopupFrame::LayoutPopup(nsBoxLayoutState& aState,
nsIFrame* aParentMenu, nsIFrame* aAnchor,
bool aSizedToPopup) {
if (!mGeneratedChildren) 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), nsIScrollableFrame::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(aAnchor, 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(aAnchor, 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);
}
#ifndef MOZ_WIDGET_GTK
// If the animate attribute is set to open, check for a transition and wait
// for it to finish before firing the popupshown event.
if (mContent->AsElement()->AttrValueIs(kNameSpaceID_None,
nsGkAtoms::animate, nsGkAtoms::open,
eCaseMatters) &&
nsLayoutUtils::HasCurrentTransitions(this)) {
mPopupShownDispatcher = new nsXULPopupShownEvent(mContent, pc);
mContent->AddSystemEventListener(NS_LITERAL_STRING("transitionend"),
mPopupShownDispatcher, false, false);
return;
}
#endif
// 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(aAnchor, 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();
if (!parentMenu) {
return false;
}
nsCOMPtr<nsIDOMXULMenuListElement> menulist =
do_QueryInterface(parentMenu->GetContent());
return menulist != nullptr;
}
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 <popup> 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::InitializePopupWithAnchorAlign(
nsIContent* aAnchorContent, nsAString& aAnchor, nsAString& aAlign,
int32_t aXPos, int32_t aYPos) {
EnsureWidget();
mPopupState = ePopupShowing;
mAdjustOffsetForContextMenu = false;
mFlip = FlipType_Default;
mPositionedOffset = 0;
// this popup opening function is provided for backwards compatibility
// only. It accepts either coordinates or an anchor and alignment value
// but doesn't use both together.
if (aXPos == -1 && aYPos == -1) {
mAnchorContent = aAnchorContent;
mAnchorType = MenuPopupAnchorType_Node;
mScreenRect = nsIntRect(-1, -1, 0, 0);
mXPos = 0;
mYPos = 0;
InitPositionFromAnchorAlign(aAnchor, aAlign);
} else {
mAnchorContent = nullptr;
mAnchorType = MenuPopupAnchorType_Point;
mPopupAnchor = POPUPALIGNMENT_NONE;
mPopupAlignment = POPUPALIGNMENT_NONE;
mPosition = POPUPPOSITION_UNKNOWN;
mScreenRect = nsIntRect(aXPos, aYPos, 0, 0);
mXPos = aXPos;
mYPos = aYPos;
}
}
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);
}
nsIPresShell::SetCapturingContent(nullptr, 0);
}
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, nsIPresShell::eTreeChange,
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) {
nsIDocument* 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);
}
}
uint32_t nsMenuPopupFrame::GetXULLayoutFlags() {
return NS_FRAME_NO_SIZE_VIEW | NS_FRAME_NO_MOVE_VIEW | NS_FRAME_NO_VISIBILITY;
}
///////////////////////////////////////////////////////////////////////////////
// GetRootViewForPopup
// Retrieves the view for the popup widget that contains the given frame.
// If the given frame is not contained by a popup widget, return the
// root view of the root viewmanager.
nsView* nsMenuPopupFrame::GetRootViewForPopup(nsIFrame* aStartFrame) {
nsView* view = aStartFrame->GetClosestView();
NS_ASSERTION(view, "frame must have a closest view!");
while (view) {
// Walk up the view hierarchy looking for a view whose widget has a
// window type of eWindowType_popup - in other words a popup window
// widget. If we find one, this is the view we want.
nsIWidget* widget = view->GetWidget();
if (widget && widget->WindowType() == eWindowType_popup) {
return view;
}
nsView* temp = view->GetParent();
if (!temp) {
// Otherwise, we've walked all the way up to the root view and not
// found a view for a popup window widget. Just return the root view.
return view;
}
view = temp;
}
return nullptr;
}
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);
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(0, 0, 0, 0);
StyleMargin()->GetMargin(margin);
switch (popupAlign) {
case POPUPALIGNMENT_TOPRIGHT:
pnt.MoveBy(-mRect.width - margin.right, margin.top);
break;
case POPUPALIGNMENT_BOTTOMLEFT:
pnt.MoveBy(margin.left, -mRect.height - margin.bottom);
break;
case POPUPALIGNMENT_BOTTOMRIGHT:
pnt.MoveBy(-mRect.width - margin.right, -mRect.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 || mReflowCallbackData.mIsOpenChanged) {
nsIFrame* selectedItemFrame = GetSelectedItemForAlignment();
if (selectedItemFrame) {
int32_t scrolly = 0;
nsIScrollableFrame* scrollframe =
do_QueryFrame(nsBox::GetChildXULBox(this));
if (scrollframe) {
scrolly = scrollframe->GetScrollPosition().y;
}
mPositionedOffset = originalAnchorRect.height +
selectedItemFrame->GetRect().y - scrolly;
}
}
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() {
// This method adjusts a menulist's popup such that the selected item is under
// the cursor, aligned with the menulist label.
nsCOMPtr<nsIDOMXULSelectControlElement> select =
do_QueryInterface(mAnchorContent);
if (!select) {
// If there isn't an anchor, then try just getting the parent of the popup.
select = do_QueryInterface(mContent->GetParent());
if (!select) {
return nullptr;
}
}
nsCOMPtr<nsIDOMXULSelectControlItemElement> item;
select->GetSelectedItem(getter_AddRefs(item));
nsCOMPtr<nsIContent> selectedElement = do_QueryInterface(item);
return selectedElement ? selectedElement->GetPrimaryFrame() : nullptr;
}
nscoord nsMenuPopupFrame::SlideOrResize(nscoord& aScreenPoint, nscoord aSize,
nscoord aScreenBegin,
nscoord aScreenEnd, nscoord* aOffset) {
// 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,
nscoord aOffsetForContextMenu,
FlipStyle aFlip, bool aEndAligned,
bool* aFlipSide) {
// 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 -
std::max(aOffsetForContextMenu, 0);
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) {
// 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());
}
nsresult nsMenuPopupFrame::SetPopupPosition(nsIFrame* aAnchorFrame,
bool aIsMove, bool aSizedToPopup,
bool aNotify) {
if (!mShouldAutoPosition) return NS_OK;
// If this is due to a move, return early if the popup hasn't been laid out
// yet. On Windows, this can happen when using a drag popup before it opens.
if (aIsMove && (mPrefSize.width == -1 || mPrefSize.height == -1)) {
return NS_OK;
}
nsPresContext* presContext = PresContext();
nsIFrame* rootFrame = presContext->PresShell()->GetRootFrame();
NS_ASSERTION(rootFrame->GetView() && GetView() &&
rootFrame->GetView() == GetView()->GetParent(),
"rootFrame's view is not our view's parent???");
// For anchored popups, the anchor rectangle. For non-anchored popups, the
// size will be 0.
nsRect anchorRect;
// Width of the parent, used when aSizedToPopup is true.
int32_t parentWidth = 0;
bool anchored = IsAnchored();
if (anchored || aSizedToPopup) {
// In order to deal with transforms, we need the root prescontext:
nsPresContext* rootPresContext = presContext->GetRootPresContext();
// If we can't reach a root pres context, don't bother continuing:
if (!rootPresContext) {
return NS_OK;
}
// If anchored to a rectangle, use that rectangle. Otherwise, determine the
// rectangle from the anchor.
if (mAnchorType == MenuPopupAnchorType_Rect) {
anchorRect = ToAppUnits(mScreenRect, presContext->AppUnitsPerCSSPixel());
} else {
// 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.
if (!aAnchorFrame) {
if (mAnchorContent) {
aAnchorFrame = mAnchorContent->GetPrimaryFrame();
}
if (!aAnchorFrame) {
aAnchorFrame = rootFrame;
if (!aAnchorFrame) return NS_OK;
}
}
anchorRect = ComputeAnchorRect(rootPresContext, aAnchorFrame);
}
// The width is needed when aSizedToPopup is true
parentWidth = anchorRect.width;
}
// 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. The preferred size should already be set by the parent frame.
NS_ASSERTION(mPrefSize.width >= 0 || mPrefSize.height >= 0,
"preferred size of popup not set");
mRect.width = aSizedToPopup ? parentWidth : mPrefSize.width;
mRect.height = mPrefSize.height;
// If we're anchoring to a rect, and the rect is smaller than the preferred
// size of the popup, change its width accordingly.
if (mAnchorType == MenuPopupAnchorType_Rect &&
parentWidth < mPrefSize.width) {
mRect.width = mPrefSize.width;
}
// the screen position in app units where the popup should appear
nsPoint screenPoint;
// indicators of whether the popup should be flipped or resized.
FlipStyle hFlip = FlipStyle_None, vFlip = FlipStyle_None;
nsMargin margin(0, 0, 0, 0);
StyleMargin()->GetMargin(margin);
// the screen rectangle of the root frame, in dev pixels.
nsRect rootScreenRect = rootFrame->GetScreenRectInAppUnits();
nsDeviceContext* devContext = presContext->DeviceContext();
nsPoint offsetForContextMenu;
bool isNoAutoHide = IsNoAutoHide();
nsPopupLevel popupLevel = PopupLevel(isNoAutoHide);
if (anchored) {
// 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.
screenPoint = AdjustPositionForAnchorAlign(anchorRect, hFlip, vFlip);
} else {
// with no anchor, the popup is positioned relative to the root frame
anchorRect = rootScreenRect;
screenPoint = anchorRect.TopLeft() + nsPoint(margin.left, margin.top);
}
// mXPos and mYPos specify an additonal 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.
nscoord anchorXOffset = presContext->CSSPixelsToAppUnits(mXPos);
if (IsDirectionRTL()) {
screenPoint.x -= anchorXOffset;
anchorRect.x -= anchorXOffset;
} else {
screenPoint.x += anchorXOffset;
anchorRect.x += anchorXOffset;
}
nscoord anchorYOffset = presContext->CSSPixelsToAppUnits(mYPos);
screenPoint.y += anchorYOffset;
anchorRect.y += anchorYOffset;
// 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.
if (isNoAutoHide && (popupLevel != ePopupLevelParent ||
mAnchorType == MenuPopupAnchorType_Rect)) {
// Account for the margin that will end up being added to the screen
// coordinate the next time SetPopupPosition is called.
mAnchorType = MenuPopupAnchorType_Point;
mScreenRect.x =
presContext->AppUnitsToIntCSSPixels(screenPoint.x - margin.left);
mScreenRect.y =
presContext->AppUnitsToIntCSSPixels(screenPoint.y - margin.top);
}
} else {
// The popup is positioned at a screen coordinate.
// First convert the screen position in mScreenRect from CSS pixels into
// device pixels, ignoring any zoom as mScreenRect holds unzoomed screen
// coordinates.
int32_t factor = devContext->AppUnitsPerDevPixelAtUnitFullZoom();
// Depending on the platform, context menus should be offset by varying
// amounts to ensure that they don't appear directly where the cursor is.
// Otherwise, it is too easy to have the context menu close up again.
if (mAdjustOffsetForContextMenu) {
nsPoint offsetForContextMenuDev;
offsetForContextMenuDev.x =
nsPresContext::CSSPixelsToAppUnits(LookAndFeel::GetInt(
LookAndFeel::eIntID_ContextMenuOffsetHorizontal)) /
factor;
offsetForContextMenuDev.y =
nsPresContext::CSSPixelsToAppUnits(LookAndFeel::GetInt(
LookAndFeel::eIntID_ContextMenuOffsetVertical)) /
factor;
offsetForContextMenu.x =
presContext->DevPixelsToAppUnits(offsetForContextMenuDev.x);
offsetForContextMenu.y =
presContext->DevPixelsToAppUnits(offsetForContextMenuDev.y);
}
// next, convert into app units accounting for the zoom
screenPoint.x = presContext->DevPixelsToAppUnits(
nsPresContext::CSSPixelsToAppUnits(mScreenRect.x) / factor);
screenPoint.y = presContext->DevPixelsToAppUnits(
nsPresContext::CSSPixelsToAppUnits(mScreenRect.y) / factor);
anchorRect = nsRect(screenPoint, nsSize(0, 0));
// add the margins on the popup
screenPoint.MoveBy(margin.left + offsetForContextMenu.x,
margin.top + offsetForContextMenu.y);
#ifdef XP_MACOSX
// OSX tooltips follow standard flip rule but other popups flip horizontally
// not vertically
if (mPopupType == ePopupTypeTooltip) {
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
}
nscoord oldAlignmentOffset = mAlignmentOffset;
// If a panel is being moved or has flip="none", don't constrain or flip it,
// in order to avoid visual noise when moving windows between screens.
// However, if a panel is already constrained or flipped (mIsOffset), then we
// want to continue to calculate this. Also, always do this for content
// shells, so that the popup doesn't extend outside the containing frame.
if (mInContentShell ||
(mFlip != FlipType_None &&
(!aIsMove || mIsOffset || mPopupType != ePopupTypePanel))) {
int32_t appPerDev = presContext->AppUnitsPerDevPixel();
LayoutDeviceIntRect anchorRectDevPix =
LayoutDeviceIntRect::FromAppUnitsToNearest(anchorRect, appPerDev);
LayoutDeviceIntRect rootScreenRectDevPix =
LayoutDeviceIntRect::FromAppUnitsToNearest(rootScreenRect, appPerDev);
LayoutDeviceIntRect screenRectDevPix =
GetConstraintRect(anchorRectDevPix, rootScreenRectDevPix, popupLevel);
nsRect screenRect =
LayoutDeviceIntRect::ToAppUnits(screenRectDevPix, appPerDev);
// Ensure that anchorRect is on screen.
anchorRect = anchorRect.Intersect(screenRect);
// shrink the the popup down if it is larger than the screen size
if (mRect.width > screenRect.width) mRect.width = screenRect.width;
if (mRect.height > screenRect.height) mRect.height = screenRect.height;
// at this point the anchor (anchorRect) is within the available screen
// area (screenRect) and the popup is known to be no larger than the screen.
// 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.
bool endAligned = IsDirectionRTL()
? mPopupAlignment == POPUPALIGNMENT_TOPLEFT ||
mPopupAlignment == POPUPALIGNMENT_BOTTOMLEFT
: mPopupAlignment == POPUPALIGNMENT_TOPRIGHT ||
mPopupAlignment == POPUPALIGNMENT_BOTTOMRIGHT;
nscoord preOffsetScreenPoint = screenPoint.x;
if (slideHorizontal) {
mRect.width = SlideOrResize(screenPoint.x, mRect.width, screenRect.x,
screenRect.XMost(), &mAlignmentOffset);
} else {
mRect.width = FlipOrResize(
screenPoint.x, mRect.width, screenRect.x, screenRect.XMost(),
anchorRect.x, anchorRect.XMost(), margin.left, margin.right,
offsetForContextMenu.x, hFlip, endAligned, &mHFlip);
}
mIsOffset = preOffsetScreenPoint != screenPoint.x;
endAligned = mPopupAlignment == POPUPALIGNMENT_BOTTOMLEFT ||
mPopupAlignment == POPUPALIGNMENT_BOTTOMRIGHT;
preOffsetScreenPoint = screenPoint.y;
if (slideVertical) {
mRect.height = SlideOrResize(screenPoint.y, mRect.height, screenRect.y,
screenRect.YMost(), &mAlignmentOffset);
} else {
mRect.height = FlipOrResize(
screenPoint.y, mRect.height, screenRect.y, screenRect.YMost(),
anchorRect.y, anchorRect.YMost(), margin.top, margin.bottom,
offsetForContextMenu.y, vFlip, endAligned, &mVFlip);
}
mIsOffset = mIsOffset || (preOffsetScreenPoint != screenPoint.y);
NS_ASSERTION(screenPoint.x >= screenRect.x &&
screenPoint.y >= screenRect.y &&
screenPoint.x + mRect.width <= screenRect.XMost() &&
screenPoint.y + mRect.height <= screenRect.YMost(),
"Popup is offscreen");
}
// snap the popup's position in screen coordinates to device pixels,
// see bug 622507, bug 961431
screenPoint.x = presContext->RoundAppUnitsToNearestDevPixels(screenPoint.x);
screenPoint.y = presContext->RoundAppUnitsToNearestDevPixels(screenPoint.y);
// determine the x and y position of the view by subtracting the desired
// screen position from the screen position of the root frame.
nsPoint viewPoint = screenPoint - rootScreenRect.TopLeft();
nsView* view = GetView();
NS_ASSERTION(view, "popup with no view");
// 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.
nsIWidget* widget = view->GetWidget();
if (mPopupType == ePopupTypePanel && widget) {
mLastClientOffset = widget->GetClientOffset();
viewPoint.x += presContext->DevPixelsToAppUnits(mLastClientOffset.x);
viewPoint.y += presContext->DevPixelsToAppUnits(mLastClientOffset.y);
}
presContext->GetPresShell()->GetViewManager()->MoveViewTo(view, viewPoint.x,
viewPoint.y);
// Now that we've positioned the view, sync up the frame's origin.
nsBoxFrame::SetPosition(viewPoint - GetParent()->GetOffsetTo(rootFrame));
if (aSizedToPopup) {
nsBoxLayoutState state(PresContext());
// XXXndeakin can parentSize.width still extend outside?
SetXULBounds(state, mRect);
}
// 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.
nsIntRect newRect(screenPoint.x, screenPoint.y, mRect.width, mRect.height);
if (mPopupState == ePopupPositioning ||
(mPopupState == ePopupShown && !newRect.IsEqualEdges(mUsedScreenRect)) ||
(mPopupState == ePopupShown && oldAlignmentOffset != mAlignmentOffset)) {
mUsedScreenRect = newRect;
if (aNotify) {
nsXULPopupPositionedEvent::DispatchIfNeeded(mContent, false, false);
}
}
return NS_OK;
}
/* virtual */ nsMenuFrame* nsMenuPopupFrame::GetCurrentMenuItem() {
return mCurrentMenu;
}
LayoutDeviceIntRect nsMenuPopupFrame::GetConstraintRect(
const LayoutDeviceIntRect& aAnchorRect,
const LayoutDeviceIntRect& aRootScreenRect, nsPopupLevel aPopupLevel) {
LayoutDeviceIntRect screenRectPixels;
// 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.
nsCOMPtr<nsIScreen> screen;
nsCOMPtr<nsIScreenManager> sm(
do_GetService("@mozilla.org/gfx/screenmanager;1"));
if (sm) {
// 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.
DesktopToLayoutDeviceScale scale =
PresContext()->DeviceContext()->GetDesktopToDeviceScale();
DesktopRect rect =
(mInContentShell ? aRootScreenRect : aAnchorRect) / scale;
int32_t width = std::max(1, NSToIntRound(rect.width));
int32_t height = std::max(1, NSToIntRound(rect.height));
sm->ScreenForRect(rect.x, rect.y, width, height, getter_AddRefs(screen));
if (screen) {
// Non-top-level popups (which will always be panels)
// should never overlap the OS bar:
bool dontOverlapOSBar = aPopupLevel != ePopupLevelTop;
// get the total screen area if the popup is allowed to overlap it.
if (!dontOverlapOSBar && mMenuCanOverlapOSBar && !mInContentShell)
screen->GetRect(&screenRectPixels.x, &screenRectPixels.y,
&screenRectPixels.width, &screenRectPixels.height);
else
screen->GetAvailRect(&screenRectPixels.x, &screenRectPixels.y,
&screenRectPixels.width, &screenRectPixels.height);
}
}
if (mInContentShell) {
// for content shells, clip to the client area rather than the screen area
screenRectPixels.IntersectRect(screenRectPixels, aRootScreenRect);
} else if (!mOverrideConstraintRect.IsEmpty()) {
LayoutDeviceIntRect overrideConstrainRect =
LayoutDeviceIntRect::FromAppUnitsToNearest(
mOverrideConstraintRect, PresContext()->AppUnitsPerDevPixel());
// 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.
screenRectPixels.IntersectRect(screenRectPixels, overrideConstrainRect);
screenRectPixels.x = overrideConstrainRect.x;
screenRectPixels.width = overrideConstrainRect.width;
}
return screenRectPixels;
}
void nsMenuPopupFrame::CanAdjustEdges(Side aHorizontalSide, Side aVerticalSide,
LayoutDeviceIntPoint& aChange) {
int8_t popupAlign(mPopupAlignment);
if (IsDirectionRTL()) {
popupAlign = -popupAlign;
}
if (aHorizontalSide == (mHFlip ? eSideRight : eSideLeft)) {
if (popupAlign == POPUPALIGNMENT_TOPLEFT ||
popupAlign == POPUPALIGNMENT_BOTTOMLEFT) {
aChange.x = 0;
}
} else if (aHorizontalSide == (mHFlip ? eSideLeft : eSideRight)) {
if (popupAlign == POPUPALIGNMENT_TOPRIGHT ||
popupAlign == POPUPALIGNMENT_BOTTOMRIGHT) {
aChange.x = 0;
}
}
if (aVerticalSide == (mVFlip ? eSideBottom : eSideTop)) {
if (popupAlign == POPUPALIGNMENT_TOPLEFT ||
popupAlign == POPUPALIGNMENT_TOPRIGHT) {
aChange.y = 0;
}
} else if (aVerticalSide == (mVFlip ? eSideTop : eSideBottom)) {
if (popupAlign == POPUPALIGNMENT_BOTTOMLEFT ||
popupAlign == POPUPALIGNMENT_BOTTOMRIGHT) {
aChange.y = 0;
}
}
}
ConsumeOutsideClicksResult nsMenuPopupFrame::ConsumeOutsideClicks() {
// If the popup has explicitly set a consume mode, honor that.
if (mConsumeRollupEvent != PopupBoxObject::ROLLUP_DEFAULT) {
return (mConsumeRollupEvent == PopupBoxObject::ROLLUP_CONSUME)
? ConsumeOutsideClicks_True
: ConsumeOutsideClicks_ParentOnly;
}
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) ||
parentContent->AsElement()->AttrValueIs(
kNameSpaceID_None, nsGkAtoms::type, nsGkAtoms::menuButton,
eCaseMatters)))) {
return ConsumeOutsideClicks_Never;
}
#endif
if (ni->Equals(nsGkAtoms::textbox, kNameSpaceID_XUL)) {
// Don't consume outside clicks for autocomplete widget
if (parentContent->AsElement()->AttrValueIs(
kNameSpaceID_None, nsGkAtoms::type, nsGkAtoms::autocomplete,
eCaseMatters)) {
return ConsumeOutsideClicks_Never;
}
}
}
return ConsumeOutsideClicks_True;
}
// 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(nsIFrame* aStart) {
if (!aStart) return nullptr;
// try start frame and siblings
nsIFrame* currFrame = aStart;
do {
nsIScrollableFrame* sf = do_QueryFrame(currFrame);
if (sf) return sf;
currFrame = currFrame->GetNextSibling();
} while (currFrame);
// try children
currFrame = aStart;
do {
nsIFrame* childFrame = currFrame->PrincipalChildList().FirstChild();
nsIScrollableFrame* sf = GetScrollFrame(childFrame);
if (sf) return sf;
currFrame = currFrame->GetNextSibling();
} while (currFrame);
return nullptr;
}
void nsMenuPopupFrame::EnsureMenuItemIsVisible(nsMenuFrame* aMenuItem) {
if (aMenuItem) {
aMenuItem->PresShell()->ScrollFrameRectIntoView(
aMenuItem, nsRect(nsPoint(0, 0), aMenuItem->GetRect().Size()),
nsIPresShell::ScrollAxis(), nsIPresShell::ScrollAxis(),
nsIPresShell::SCROLL_OVERFLOW_HIDDEN |
nsIPresShell::SCROLL_FIRST_ANCESTOR_ONLY);
}
}
void nsMenuPopupFrame::ChangeByPage(bool aIsUp) {
// Only scroll by page within menulists.
if (!IsMenuList()) {
return;
}
nsMenuFrame* newMenu = nullptr;
nsIFrame* currentMenu = mCurrentMenu;
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 = nsXULPopupManager::GetNextMenuItem(this, nullptr, true, false);
if (!aIsUp) {
currentMenu = newMenu;
}
}
if (currentMenu) {
nscoord scrollHeight = mRect.height;
nsIScrollableFrame* scrollframe = GetScrollFrame(this);
if (scrollframe) {
scrollHeight = scrollframe->GetScrollPortRect().height;
}
// Get the position of the current item and add or subtract one popup's
// height to or from it.
nscoord targetPosition = aIsUp
? currentMenu->GetRect().YMost() - scrollHeight
: currentMenu->GetRect().y + scrollHeight;
// Indicates that the last visible child was a valid menuitem.
bool lastWasValid = false;
// Look for the next child which is just past the target position. This
// child will need to be selected.
while (currentMenu) {
// Only consider menu frames.
nsMenuFrame* menuFrame = do_QueryFrame(currentMenu);
if (menuFrame &&
nsXULPopupManager::IsValidMenuItem(menuFrame->GetContent(), true)) {
// If the right position was found, break out. Otherwise, look for
// another item.
if ((!aIsUp && currentMenu->GetRect().YMost() > targetPosition) ||
(aIsUp && currentMenu->GetRect().y < targetPosition)) {
// If the last visible child was not a valid menuitem or was disabled,
// use this as the menu to select, skipping over any non-valid items
// at the edge of the page.
if (!lastWasValid) {
newMenu = menuFrame;
}
break;
}
// Assign this item to newMenu. This item will be selected in case we
// don't find any more.
lastWasValid = true;
newMenu = menuFrame;
} else {
lastWasValid = false;
}
currentMenu =
aIsUp ? currentMenu->GetPrevSibling() : currentMenu->GetNextSibling();
}
}
// Select the new menuitem.
if (newMenu) {
ChangeMenuItem(newMenu, false, true);
}
}
NS_IMETHODIMP nsMenuPopupFrame::SetCurrentMenuItem(nsMenuFrame* aMenuItem) {
if (mCurrentMenu == aMenuItem) return NS_OK;
if (mCurrentMenu) {
mCurrentMenu->SelectMenu(false);
}
if (aMenuItem) {
EnsureMenuItemIsVisible(aMenuItem);
aMenuItem->SelectMenu(true);
}
mCurrentMenu = aMenuItem;
return NS_OK;
}
void nsMenuPopupFrame::CurrentMenuIsBeingDestroyed() { mCurrentMenu = nullptr; }
NS_IMETHODIMP
nsMenuPopupFrame::ChangeMenuItem(nsMenuFrame* aMenuItem, bool aSelectFirstItem,
bool aFromKey) {
if (mCurrentMenu == aMenuItem) return NS_OK;
// When a context menu is open, the current menu is locked, and no change
// to the menu is allowed.
nsXULPopupManager* pm = nsXULPopupManager::GetInstance();
if (!mIsContextMenu && pm && pm->HasContextMenu(this)) return NS_OK;
// Unset the current child.
if (mCurrentMenu) {
mCurrentMenu->SelectMenu(false);
nsMenuPopupFrame* popup = mCurrentMenu->GetPopup();
if (popup) {
if (mCurrentMenu->IsOpen()) {
if (pm) pm->HidePopupAfterDelay(popup);
}
}
}
// Set the new child.
if (aMenuItem) {
EnsureMenuItemIsVisible(aMenuItem);
aMenuItem->SelectMenu(true);
// On Windows, a menulist should update its value whenever navigation was
// done by the keyboard.
#ifdef XP_WIN
if (aFromKey && IsOpen() && IsMenuList()) {
// Fire a command event as the new item, but we don't want to close
// the menu, blink it, or update any other state of the menuitem. The
// command event will cause the item to be selected.
nsContentUtils::DispatchXULCommand(
aMenuItem->GetContent(), /* aTrusted = */ true, nullptr, PresShell(),
false, false, false, false);
}
#endif
}
mCurrentMenu = aMenuItem;
return NS_OK;
}
nsMenuFrame* nsMenuPopupFrame::Enter(WidgetGUIEvent* aEvent) {
mIncrementalString.Truncate();
// Give it to the child.
if (mCurrentMenu) return mCurrentMenu->Enter(aEvent);
return nullptr;
}
nsMenuFrame* nsMenuPopupFrame::FindMenuWithShortcut(KeyboardEvent* aKeyEvent,
bool& doAction) {
uint32_t charCode = aKeyEvent->CharCode();
uint32_t keyCode = aKeyEvent->KeyCode();
doAction = false;
// Enumerate over our list of frames.
nsContainerFrame* immediateParent =
nsXULPopupManager::ImmediateParentFrame(this);
uint32_t matchCount = 0, matchShortcutCount = 0;
bool foundActive = false;
nsMenuFrame* frameBefore = nullptr;
nsMenuFrame* frameAfter = nullptr;
nsMenuFrame* frameShortcut = nullptr;
nsIContent* parentContent = mContent->GetParent();
bool isMenu = parentContent && !parentContent->NodeInfo()->Equals(
nsGkAtoms::menulist, kNameSpaceID_XUL);
DOMTimeStamp keyTime = aKeyEvent->TimeStamp();
if (charCode == 0) {
if (keyCode == dom::KeyboardEventBinding::DOM_VK_BACK_SPACE) {
if (!isMenu && !mIncrementalString.IsEmpty()) {
mIncrementalString.SetLength(mIncrementalString.Length() - 1);
return nullptr;
} else {
#ifdef XP_WIN
nsCOMPtr<nsISound> soundInterface =
do_CreateInstance("@mozilla.org/sound;1");
if (soundInterface) soundInterface->Beep();
#endif // #ifdef XP_WIN
}
}
return nullptr;
} else {
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;
// NOTE: If you crashed here due to a bogus |immediateParent| it is
// possible that the menu whose shortcut is being looked up has
// been destroyed already. One strategy would be to
// setTimeout(<func>,0) as detailed in:
// <http://bugzilla.mozilla.org/show_bug.cgi?id=126675#c32>
nsIFrame* firstMenuItem =
nsXULPopupManager::GetNextMenuItem(immediateParent, nullptr, true, false);
nsIFrame* currFrame = firstMenuItem;
int32_t menuAccessKey = -1;
nsMenuBarListener::GetMenuAccessKey(&menuAccessKey);
// We start searching from first child. This process is divided into two parts
// -- before current and after current -- by the current item
while (currFrame) {
nsIContent* current = currFrame->GetContent();
nsAutoString textKey;
bool isShortcut = false;
if (current->IsElement()) {
if (menuAccessKey >= 0) {
// Get the shortcut attribute.
current->AsElement()->GetAttr(kNameSpaceID_None, nsGkAtoms::accesskey,
textKey);
}
isShortcut = !textKey.IsEmpty();
if (textKey.IsEmpty()) { // No shortcut, try first letter
current->AsElement()->GetAttr(kNameSpaceID_None, nsGkAtoms::label,
textKey);
if (textKey.IsEmpty()) // No label, try another attribute (value)
current->AsElement()->GetAttr(kNameSpaceID_None, nsGkAtoms::value,
textKey);
}
}
if (StringBeginsWith(textKey, incrementalString,
nsCaseInsensitiveStringComparator())) {
// mIncrementalString is a prefix of textKey
nsMenuFrame* menu = do_QueryFrame(currFrame);
if (menu) {
// There is one match
matchCount++;
if (isShortcut) {
// There is one shortcut-key match
matchShortcutCount++;
// Record the matched item. If there is only one matched shortcut
// item, do it
frameShortcut = menu;
}
if (!foundActive) {
// It's a first candidate item located before/on the current item
if (!frameBefore) frameBefore = menu;
} else {
// It's a first candidate item located after the current item
if (!frameAfter) frameAfter = menu;
}
} else
return nullptr;
}
// Get the active status
if (current->IsElement() && current->AsElement()->AttrValueIs(
kNameSpaceID_None, nsGkAtoms::menuactive,
nsGkAtoms::_true, eCaseMatters)) {
foundActive = true;
if (stringLength > 1) {
// If there is more than one char typed, the current item has highest
// priority,
// otherwise the item next to current has highest priority
if (currFrame == frameBefore) return frameBefore;
}
}
nsMenuFrame* menu = do_QueryFrame(currFrame);
currFrame =
nsXULPopupManager::GetNextMenuItem(immediateParent, menu, true, true);
if (currFrame == firstMenuItem) break;
}
doAction = (isMenu && (matchCount == 1 || matchShortcutCount == 1));
if (matchShortcutCount == 1) // We have one matched shortcut item
return frameShortcut;
if (frameAfter) // If we have matched item after the current, use it
return frameAfter;
else if (frameBefore) // If we haven't, use the item before the current
return frameBefore;
// 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) {
nsCOMPtr<nsISound> soundInterface =
do_CreateInstance("@mozilla.org/sound;1");
if (soundInterface) soundInterface->Beep();
}
#endif // #ifdef XP_WIN
return nullptr;
}
void nsMenuPopupFrame::LockMenuUntilClosed(bool aLock) {
mIsMenuLocked = aLock;
// Lock / unlock the parent, too.
nsMenuFrame* menu = do_QueryFrame(GetParent());
if (menu) {
nsMenuParent* parentParent = menu->GetMenuParent();
if (parentParent) {
parentParent->LockMenuUntilClosed(aLock);
}
}
}
nsIWidget* nsMenuPopupFrame::GetWidget() {
nsView* view = GetRootViewForPopup(this);
if (!view) return nullptr;
return view->GetWidget();
}
void nsMenuPopupFrame::AttachedDismissalListener() {
mConsumeRollupEvent = PopupBoxObject::ROLLUP_DEFAULT;
}
// helpers /////////////////////////////////////////////////////////////
nsresult nsMenuPopupFrame::AttributeChanged(int32_t aNameSpaceID,
nsAtom* aAttribute,
int32_t aModType)
{
nsresult rv =
nsBoxFrame::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.
EnsureWidget(true);
}
if (aAttribute == nsGkAtoms::followanchor) {
nsXULPopupManager* pm = nsXULPopupManager::GetInstance();
if (pm) {
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 PopupBoxObject 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);
}
void nsMenuPopupFrame::DestroyFrom(nsIFrame* aDestructRoot,
PostDestroyData& aPostDestroyData) {
if (mReflowCallbackData.mPosted) {
PresShell()->CancelReflowCallback(this);
mReflowCallbackData.Clear();
}
nsMenuFrame* menu = do_QueryFrame(GetParent());
if (menu) {
// clear the open attribute on the parent menu
nsContentUtils::AddScriptRunner(new nsUnsetAttrRunnable(
menu->GetContent()->AsElement(), nsGkAtoms::open));
}
ClearPopupShownDispatcher();
nsXULPopupManager* pm = nsXULPopupManager::GetInstance();
if (pm) pm->PopupDestroyed(this);
nsIRootBox* rootBox = nsIRootBox::GetRootBox(PresContext()->GetPresShell());
if (rootBox && rootBox->GetDefaultTooltip() == mContent) {
rootBox->SetDefaultTooltip(nullptr);
}
nsBoxFrame::DestroyFrom(aDestructRoot, aPostDestroyData);
}
void nsMenuPopupFrame::MoveTo(const CSSIntPoint& aPos, bool aUpdateAttrs) {
nsIWidget* widget = GetWidget();
if ((mScreenRect.x == aPos.x && mScreenRect.y == aPos.y) &&
(!widget || widget->GetClientOffset() == mLastClientOffset)) {
return;
}
// 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(0, 0, 0, 0);
StyleMargin()->GetMargin(margin);
// Workaround for bug 788189. See also bug 708278 comment #25 and following.
if (mAdjustOffsetForContextMenu) {
margin.left += nsPresContext::CSSPixelsToAppUnits(
LookAndFeel::GetInt(LookAndFeel::eIntID_ContextMenuOffsetHorizontal));
margin.top += nsPresContext::CSSPixelsToAppUnits(
LookAndFeel::GetInt(LookAndFeel::eIntID_ContextMenuOffsetVertical));
}
nsPresContext* presContext = PresContext();
mAnchorType = MenuPopupAnchorType_Point;
mScreenRect.x = aPos.x - presContext->AppUnitsToIntCSSPixels(margin.left);
mScreenRect.y = aPos.y - presContext->AppUnitsToIntCSSPixels(margin.top);
SetPopupPosition(nullptr, true, false, true);
RefPtr<Element> popup = mContent->AsElement();
if (aUpdateAttrs && (popup->HasAttr(kNameSpaceID_None, nsGkAtoms::left) ||
popup->HasAttr(kNameSpaceID_None, nsGkAtoms::top))) {
nsAutoString left, top;
left.AppendInt(aPos.x);
top.AppendInt(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(nullptr, false, false, true);
}
bool nsMenuPopupFrame::GetAutoPosition() { return mShouldAutoPosition; }
void nsMenuPopupFrame::SetAutoPosition(bool aShouldAutoPosition) {
mShouldAutoPosition = aShouldAutoPosition;
nsXULPopupManager* pm = nsXULPopupManager::GetInstance();
if (pm) {
pm->UpdateFollowAnchor(this);
}
}
void nsMenuPopupFrame::SetConsumeRollupEvent(uint32_t aConsumeMode) {
mConsumeRollupEvent = aConsumeMode;
}
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_BOTTOMCENTER:
position = mPopupAlignment == POPUPALIGNMENT_TOPRIGHT
? POPUPPOSITION_AFTEREND
: POPUPPOSITION_AFTERSTART;
break;
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 nsFrame::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();
nsViewVisibility visibility = nsViewVisibility_kHide;
int32_t zIndex = INT32_MAX;
bool autoZIndex = false;
NS_ASSERTION(parentView, "no parent view");
// Create a view
nsView* view = viewManager->CreateView(GetRect(), parentView, visibility);
viewManager->SetViewZIndex(view, autoZIndex, zIndex);
// 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() {
if (!mShouldAutoPosition || 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 == ePopupTypePanel &&
mContent->AsElement()->AttrValueIs(kNameSpaceID_None, nsGkAtoms::type,
nsGkAtoms::arrow, eCaseMatters));
}
bool nsMenuPopupFrame::ShouldFollowAnchor(nsRect& aRect) {
if (!ShouldFollowAnchor()) {
return false;
}
nsIFrame* anchorFrame = mAnchorContent->GetPrimaryFrame();
if (anchorFrame) {
nsPresContext* rootPresContext = PresContext()->GetRootPresContext();
if (rootPresContext) {
aRect = ComputeAnchorRect(rootPresContext, anchorFrame);
}
}
return true;
}
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 = mAnchorContent->GetPrimaryFrame();
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, false, true, true, false);
}
return;
}
nsRect anchorRect = ComputeAnchorRect(rootPresContext, anchor);
// If the rectangles are different, move the popup.
if (!anchorRect.IsEqualEdges(aRect)) {
aRect = anchorRect;
SetPopupPosition(nullptr, true, false, true);
}
}