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gecko-dev/layout/xul/nsMenuPopupFrame.cpp

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=2 sw=2 et tw=78: */
/* 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 "nsIAtom.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 "nsIDOMKeyEvent.h"
#include "nsIDOMScreen.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 "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/PopupBoxObject.h"
#include <algorithm>
using namespace mozilla;
using mozilla::dom::PopupBoxObject;
int8_t nsMenuPopupFrame::sDefaultLevelIsTop = -1;
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),
mCurrentMenu(nullptr),
mPrefSize(-1, -1),
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),
mHFlip(false),
mVFlip(false)
{
// 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;
nsCOMPtr<nsIAtom> 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->AttrValueIs(kNameSpaceID_None, nsGkAtoms::_default,
nsGkAtoms::_true, eIgnoreCase)) {
nsIRootBox* rootBox =
nsIRootBox::GetRootBox(PresContext()->GetPresShell());
if (rootBox) {
rootBox->SetDefaultTooltip(aContent);
}
}
AddStateBits(NS_FRAME_IN_POPUP);
}
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->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 nsIContent::AttrValuesArray strings[] =
{&nsGkAtoms::top, &nsGkAtoms::parent, &nsGkAtoms::floating, nullptr};
switch (mContent->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->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()
{
nsView* ourView = GetView();
if (!ourView->HasWidget()) {
NS_ASSERTION(!mGeneratedChildren && !GetFirstPrincipalChild(),
"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->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 (mContent && widgetData.mNoAutoHide) {
if (mContent->AttrValueIs(kNameSpaceID_None, nsGkAtoms::titlebar,
nsGkAtoms::normal, eCaseMatters)) {
widgetData.mBorderStyle = eBorderStyle_title;
mContent->GetAttr(kNameSpaceID_None, nsGkAtoms::label, title);
if (mContent->AttrValueIs(kNameSpaceID_None, nsGkAtoms::close,
nsGkAtoms::_true, eCaseMatters)) {
widgetData.mBorderStyle =
static_cast<enum nsBorderStyle>(widgetData.mBorderStyle | eBorderStyle_close);
}
}
}
nsTransparencyMode mode = nsLayoutUtils::GetFrameTransparency(this, this);
nsIContent* parentContent = GetContent()->GetParent();
nsIAtom *tag = nullptr;
if (parentContent && parentContent->IsXULElement())
tag = parentContent->NodeInfo()->NameAtom();
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, NS_XUL_POPUP_SHOWN, nullptr,
WidgetMouseEvent::eReal);
return EventDispatcher::Dispatch(mPopup, mPresContext, &event);
}
NS_IMETHODIMP nsXULPopupShownEvent::HandleEvent(nsIDOMEvent* aEvent)
{
nsMenuPopupFrame* popup = do_QueryFrame(mPopup->GetPrimaryFrame());
if (popup) {
// ResetPopupShownDispatcher will delete the reference to this, so keep
// another one until Run is finished.
nsRefPtr<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, nsRunnable, nsIDOMEventListener);
void
nsMenuPopupFrame::SetInitialChildList(ChildListID aListID,
nsFrameList& aChildList)
{
// unless the list is empty, indicate that children have been generated.
if (aChildList.NotEmpty())
mGeneratedChildren = true;
nsBoxFrame::SetInitialChildList(aListID, aChildList);
}
bool
nsMenuPopupFrame::IsLeaf() 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->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->HasAttr(kNameSpaceID_None, nsGkAtoms::sizetopopup));
}
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);
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
if (mIsOpenChanged) {
nsIScrollableFrame *scrollframe = do_QueryFrame(nsBox::GetChildBox(this));
if (scrollframe) {
nsWeakFrame 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 = GetPrefSize(aState);
nsSize minSize = GetMinSize(aState);
nsSize maxSize = GetMaxSize(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) {
SetBounds(aState, nsRect(0, 0, prefSize.width, prefSize.height), false);
mPrefSize = prefSize;
}
bool needCallback = false;
if (shouldPosition) {
SetPopupPosition(aAnchor, false, aSizedToPopup);
needCallback = true;
}
nsRect bounds(GetRect());
Layout(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.
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) {
SetPopupPosition(aAnchor, false, aSizedToPopup);
needCallback = true;
}
}
}
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;
viewManager->ResizeView(view, rect);
if (mPopupState == ePopupOpening) {
mPopupState = ePopupVisible;
}
viewManager->SetViewVisibility(view, nsViewVisibility_kShow);
nsContainerFrame::SyncFrameViewProperties(pc, this, nullptr, view, 0);
}
// finally, if the popup just opened, send a popupshown event
if (mIsOpenChanged) {
mIsOpenChanged = false;
#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->AttrValueIs(kNameSpaceID_None, nsGkAtoms::animate,
nsGkAtoms::open, eCaseMatters) &&
nsLayoutUtils::HasCurrentAnimations(mContent,
nsGkAtoms::transitionsProperty)) {
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);
NS_DispatchToCurrentThread(event);
}
if (needCallback && !mReflowCallbackData.mPosted) {
pc->PresShell()->PostReflowCallback(this);
mReflowCallbackData.MarkPosted(aAnchor, aSizedToPopup);
}
}
bool
nsMenuPopupFrame::ReflowFinished()
{
SetPopupPosition(mReflowCallbackData.mAnchor, false, mReflowCallbackData.mSizedToPopup);
mReflowCallbackData.Clear();
return false;
}
void
nsMenuPopupFrame::ReflowCallbackCanceled()
{
mReflowCallbackData.Clear();
}
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,
bool aAttributesOverride)
{
EnsureWidget();
mPopupState = ePopupShowing;
mAnchorContent = aAnchorContent;
mTriggerContent = aTriggerContent;
mXPos = aXPos;
mYPos = aYPos;
mAdjustOffsetForContextMenu = false;
mVFlip = false;
mHFlip = false;
mAlignmentOffset = 0;
// 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) {
nsAutoString anchor, align, position, flip;
mContent->GetAttr(kNameSpaceID_None, nsGkAtoms::popupanchor, anchor);
mContent->GetAttr(kNameSpaceID_None, nsGkAtoms::popupalign, align);
mContent->GetAttr(kNameSpaceID_None, nsGkAtoms::position, position);
mContent->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 {
InitPositionFromAnchorAlign(anchor, align);
}
}
mScreenXPos = -1;
mScreenYPos = -1;
if (aAttributesOverride) {
// Use |left| and |top| dimension attributes to position the popup if
// present, as they may have been persisted.
nsAutoString left, top;
mContent->GetAttr(kNameSpaceID_None, nsGkAtoms::left, left);
mContent->GetAttr(kNameSpaceID_None, nsGkAtoms::top, top);
nsresult err;
if (!left.IsEmpty()) {
int32_t x = left.ToInteger(&err);
if (NS_SUCCEEDED(err))
mScreenXPos = x;
}
if (!top.IsEmpty()) {
int32_t y = top.ToInteger(&err);
if (NS_SUCCEEDED(err))
mScreenYPos = y;
}
}
}
void
nsMenuPopupFrame::InitializePopupAtScreen(nsIContent* aTriggerContent,
int32_t aXPos, int32_t aYPos,
bool aIsContextMenu)
{
EnsureWidget();
mPopupState = ePopupShowing;
mAnchorContent = nullptr;
mTriggerContent = aTriggerContent;
mScreenXPos = aXPos;
mScreenYPos = aYPos;
mFlip = FlipType_Default;
mPopupAnchor = POPUPALIGNMENT_NONE;
mPopupAlignment = POPUPALIGNMENT_NONE;
mIsContextMenu = aIsContextMenu;
mAdjustOffsetForContextMenu = aIsContextMenu;
}
void
nsMenuPopupFrame::InitializePopupWithAnchorAlign(nsIContent* aAnchorContent,
nsAString& aAnchor,
nsAString& aAlign,
int32_t aXPos, int32_t aYPos)
{
EnsureWidget();
mPopupState = ePopupShowing;
mAdjustOffsetForContextMenu = false;
mFlip = FlipType_Default;
// 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;
mScreenXPos = -1;
mScreenYPos = -1;
mXPos = 0;
mYPos = 0;
InitPositionFromAnchorAlign(aAnchor, aAlign);
}
else {
mAnchorContent = nullptr;
mPopupAnchor = POPUPALIGNMENT_NONE;
mPopupAlignment = POPUPALIGNMENT_NONE;
mScreenXPos = aXPos;
mScreenYPos = aYPos;
mXPos = aXPos;
mYPos = aYPos;
}
}
void
nsMenuPopupFrame::ShowPopup(bool aIsContextMenu, bool aSelectFirstItem)
{
mIsContextMenu = aIsContextMenu;
InvalidateFrameSubtree();
if (mPopupState == ePopupShowing) {
mPopupState = ePopupOpening;
mIsOpenChanged = true;
nsMenuFrame* menuFrame = do_QueryFrame(GetParent());
if (menuFrame) {
nsWeakFrame weakFrame(this);
menuFrame->PopupOpened();
if (!weakFrame.IsAlive())
return;
}
// do we need an actual reflow here?
// is SetPopupPosition all that is needed?
PresContext()->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)
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->GetCurrentDoc();
if (doc) {
nsPIDOMWindow* win = doc->GetWindow();
if (win) {
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);
}
}
void
nsMenuPopupFrame::GetLayoutFlags(uint32_t& aFlags)
{
aFlags = 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;
}
// 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;
}
// 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;
}
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* aFlipSide)
{
// 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;
}
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 = true;
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) {
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 - aOffsetForContextMenu;
if (newScreenPoint != aScreenPoint) {
*aFlipSide = true;
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);
}
nsresult
nsMenuPopupFrame::SetPopupPosition(nsIFrame* aAnchorFrame, bool aIsMove, bool aSizedToPopup)
{
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()->FrameManager()->GetRootFrame();
NS_ASSERTION(rootFrame->GetView() && GetView() &&
rootFrame->GetView() == GetView()->GetParent(),
"rootFrame's view is not our view's parent???");
// 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;
}
}
// 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;
}
// And then we need its root frame for a reference
nsIFrame* referenceFrame = rootPresContext->FrameManager()->GetRootFrame();
// the dimensions of the anchor
nsRect parentRect = aAnchorFrame->GetRectRelativeToSelf();
// Relative to the root
parentRect = nsLayoutUtils::TransformFrameRectToAncestor(aAnchorFrame,
parentRect,
referenceFrame);
// Relative to the screen
parentRect.MoveBy(referenceFrame->GetScreenRectInAppUnits().TopLeft());
// In its own app units
parentRect =
parentRect.ScaleToOtherAppUnitsRoundOut(rootPresContext->AppUnitsPerDevPixel(),
presContext->AppUnitsPerDevPixel());
// 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 ? parentRect.width : mPrefSize.width;
mRect.height = mPrefSize.height;
// the screen position in app units where the popup should appear
nsPoint screenPoint;
// For anchored popups, the anchor rectangle. For non-anchored popups, the
// size will be 0.
nsRect anchorRect = parentRect;
// 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();
nscoord offsetForContextMenu = 0;
bool isNoAutoHide = IsNoAutoHide();
nsPopupLevel popupLevel = PopupLevel(isNoAutoHide);
if (IsAnchored()) {
// 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) {
// 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) {
// Account for the margin that will end up being added to the screen coordinate
// the next time SetPopupPosition is called.
mScreenXPos = presContext->AppUnitsToIntCSSPixels(screenPoint.x - margin.left);
mScreenYPos = presContext->AppUnitsToIntCSSPixels(screenPoint.y - margin.top);
}
}
else {
// the popup is positioned at a screen coordinate.
// first convert the screen position in mScreenXPos and mScreenYPos from
// CSS pixels into device pixels, ignoring any zoom as mScreenXPos and
// mScreenYPos are unzoomed screen coordinates.
int32_t factor = devContext->AppUnitsPerDevPixelAtUnitFullZoom();
// context menus should be offset by two pixels so 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) {
int32_t offsetForContextMenuDev =
nsPresContext::CSSPixelsToAppUnits(CONTEXT_MENU_OFFSET_PIXELS) / factor;
offsetForContextMenu = presContext->DevPixelsToAppUnits(offsetForContextMenuDev);
}
// next, convert into app units accounting for the zoom
screenPoint.x = presContext->DevPixelsToAppUnits(
nsPresContext::CSSPixelsToAppUnits(mScreenXPos) / factor);
screenPoint.y = presContext->DevPixelsToAppUnits(
nsPresContext::CSSPixelsToAppUnits(mScreenYPos) / factor);
anchorRect = nsRect(screenPoint, nsSize(0, 0));
// add the margins on the popup
screenPoint.MoveBy(margin.left + offsetForContextMenu,
margin.top + offsetForContextMenu);
// screen positioned popups can be flipped vertically but never horizontally
vFlip = FlipStyle_Outside;
}
// If a panel is being moved or has flip="none", don't constrain or flip it. But always do this for
// content shells, so that the popup doesn't extend outside the containing frame.
if (mInContentShell || (mFlip != FlipType_None && (!aIsMove || mPopupType != ePopupTypePanel))) {
nsRect screenRect = GetConstraintRect(anchorRect, rootScreenRect, popupLevel);
// 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.
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, hFlip,
&mHFlip);
}
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, vFlip,
&mVFlip);
}
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?
SetBounds(state, nsRect(mRect.x, mRect.y, parentRect.width, mRect.height));
}
return NS_OK;
}
/* virtual */ nsMenuFrame*
nsMenuPopupFrame::GetCurrentMenuItem()
{
return mCurrentMenu;
}
nsRect
nsMenuPopupFrame::GetConstraintRect(const nsRect& aAnchorRect,
const nsRect& aRootScreenRect,
nsPopupLevel aPopupLevel)
{
nsIntRect screenRectPixels;
nsPresContext* presContext = PresContext();
// 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.
nsRect rect = mInContentShell ? aRootScreenRect : aAnchorRect;
// nsIScreenManager::ScreenForRect wants the coordinates in CSS pixels
int32_t width = std::max(1, nsPresContext::AppUnitsToIntCSSPixels(rect.width));
int32_t height = std::max(1, nsPresContext::AppUnitsToIntCSSPixels(rect.height));
sm->ScreenForRect(nsPresContext::AppUnitsToIntCSSPixels(rect.x),
nsPresContext::AppUnitsToIntCSSPixels(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);
}
}
nsRect screenRect = screenRectPixels.ToAppUnits(presContext->AppUnitsPerDevPixel());
if (mInContentShell) {
// for content shells, clip to the client area rather than the screen area
screenRect.IntersectRect(screenRect, aRootScreenRect);
}
return screenRect;
}
void nsMenuPopupFrame::CanAdjustEdges(int8_t aHorizontalSide,
int8_t aVerticalSide,
LayoutDeviceIntPoint& aChange)
{
int8_t popupAlign(mPopupAlignment);
if (IsDirectionRTL()) {
popupAlign = -popupAlign;
}
if (aHorizontalSide == (mHFlip ? NS_SIDE_RIGHT : NS_SIDE_LEFT)) {
if (popupAlign == POPUPALIGNMENT_TOPLEFT || popupAlign == POPUPALIGNMENT_BOTTOMLEFT) {
aChange.x = 0;
}
}
else if (aHorizontalSide == (mHFlip ? NS_SIDE_LEFT : NS_SIDE_RIGHT)) {
if (popupAlign == POPUPALIGNMENT_TOPRIGHT || popupAlign == POPUPALIGNMENT_BOTTOMRIGHT) {
aChange.x = 0;
}
}
if (aVerticalSide == (mVFlip ? NS_SIDE_BOTTOM : NS_SIDE_TOP)) {
if (popupAlign == POPUPALIGNMENT_TOPLEFT || popupAlign == POPUPALIGNMENT_TOPRIGHT) {
aChange.y = 0;
}
}
else if (aVerticalSide == (mVFlip ? NS_SIDE_TOP : NS_SIDE_BOTTOM)) {
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->AttrValueIs(kNameSpaceID_None, nsGkAtoms::consumeoutsideclicks,
nsGkAtoms::_true, eCaseMatters)) {
return ConsumeOutsideClicks_True;
}
if (mContent->AttrValueIs(kNameSpaceID_None, nsGkAtoms::consumeoutsideclicks,
nsGkAtoms::_false, eCaseMatters)) {
return ConsumeOutsideClicks_ParentOnly;
}
if (mContent->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::splitmenu, kNameSpaceID_XUL) ||
ni->Equals(nsGkAtoms::popupset, kNameSpaceID_XUL) ||
((ni->Equals(nsGkAtoms::button, kNameSpaceID_XUL) ||
ni->Equals(nsGkAtoms::toolbarbutton, kNameSpaceID_XUL)) &&
(parentContent->AttrValueIs(kNameSpaceID_None, nsGkAtoms::type,
nsGkAtoms::menu, eCaseMatters) ||
parentContent->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->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->GetFirstPrincipalChild();
nsIScrollableFrame* sf = GetScrollFrame(childFrame);
if (sf)
return sf;
currFrame = currFrame->GetNextSibling();
} while (currFrame);
return nullptr;
}
void nsMenuPopupFrame::EnsureMenuItemIsVisible(nsMenuFrame* aMenuItem)
{
if (aMenuItem) {
aMenuItem->PresContext()->PresShell()->ScrollFrameRectIntoView(
aMenuItem,
nsRect(nsPoint(0,0), aMenuItem->GetRect().Size()),
nsIPresShell::ScrollAxis(),
nsIPresShell::ScrollAxis(),
nsIPresShell::SCROLL_OVERFLOW_HIDDEN |
nsIPresShell::SCROLL_FIRST_ANCESTOR_ONLY);
}
}
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)
{
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);
}
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(nsIDOMKeyEvent* aKeyEvent, bool& doAction)
{
uint32_t charCode, keyCode;
aKeyEvent->GetCharCode(&charCode);
aKeyEvent->GetKeyCode(&keyCode);
doAction = false;
// Enumerate over our list of frames.
auto insertion = PresContext()->PresShell()->
FrameConstructor()->GetInsertionPoint(GetContent(), nullptr);
nsContainerFrame* immediateParent = insertion.mParentFrame;
if (!immediateParent)
immediateParent = this;
uint32_t matchCount = 0, matchShortcutCount = 0;
bool foundActive = false;
bool isShortcut;
nsMenuFrame* frameBefore = nullptr;
nsMenuFrame* frameAfter = nullptr;
nsMenuFrame* frameShortcut = nullptr;
nsIContent* parentContent = mContent->GetParent();
bool isMenu = parentContent &&
!parentContent->NodeInfo()->Equals(nsGkAtoms::menulist, kNameSpaceID_XUL);
static DOMTimeStamp lastKeyTime = 0;
DOMTimeStamp keyTime;
aKeyEvent->GetTimeStamp(&keyTime);
if (charCode == 0) {
if (keyCode == nsIDOMKeyEvent::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 (sTimeoutOfIncrementalSearch &&
keyTime - lastKeyTime > sTimeoutOfIncrementalSearch) {
// Interval too long, treat as new typing
mIncrementalString = uniChar;
} else {
mIncrementalString.Append(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;
}
lastKeyTime = 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);
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;
if (menuAccessKey >= 0) {
// Get the shortcut attribute.
current->GetAttr(kNameSpaceID_None, nsGkAtoms::accesskey, textKey);
}
if (textKey.IsEmpty()) { // No shortcut, try first letter
isShortcut = false;
current->GetAttr(kNameSpaceID_None, nsGkAtoms::label, textKey);
if (textKey.IsEmpty()) // No label, try another attribute (value)
current->GetAttr(kNameSpaceID_None, nsGkAtoms::value, textKey);
}
else
isShortcut = true;
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->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);
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,
nsIAtom* aAttribute,
int32_t aModType)
{
nsresult rv = nsBoxFrame::AttributeChanged(aNameSpaceID, aAttribute,
aModType);
if (aAttribute == nsGkAtoms::left || aAttribute == nsGkAtoms::top)
MoveToAttributePosition();
if (aAttribute == nsGkAtoms::label) {
// set the label for the titlebar
nsView* view = GetView();
if (view) {
nsIWidget* widget = view->GetWidget();
if (widget) {
nsAutoString title;
mContent->GetAttr(kNameSpaceID_None, nsGkAtoms::label, title);
if (!title.IsEmpty()) {
widget->SetTitle(title);
}
}
}
}
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->GetAttr(kNameSpaceID_None, nsGkAtoms::left, left);
mContent->GetAttr(kNameSpaceID_None, nsGkAtoms::top, top);
nsresult err1, err2;
int32_t xpos = left.ToInteger(&err1);
int32_t ypos = top.ToInteger(&err2);
if (NS_SUCCEEDED(err1) && NS_SUCCEEDED(err2))
MoveTo(xpos, ypos, false);
}
void
nsMenuPopupFrame::DestroyFrom(nsIFrame* aDestructRoot)
{
if (mReflowCallbackData.mPosted) {
PresContext()->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(), 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);
}
void
nsMenuPopupFrame::MoveTo(int32_t aLeft, int32_t aTop, bool aUpdateAttrs)
{
nsIWidget* widget = GetWidget();
if ((mScreenXPos == aLeft && mScreenYPos == aTop) &&
(!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) {
nscoord offsetForContextMenu =
nsPresContext::CSSPixelsToAppUnits(CONTEXT_MENU_OFFSET_PIXELS);
margin.left += offsetForContextMenu;
margin.top += offsetForContextMenu;
}
nsPresContext* presContext = PresContext();
mScreenXPos = aLeft - presContext->AppUnitsToIntCSSPixels(margin.left);
mScreenYPos = aTop - presContext->AppUnitsToIntCSSPixels(margin.top);
SetPopupPosition(nullptr, true, false);
nsCOMPtr<nsIContent> popup = mContent;
if (aUpdateAttrs && (popup->HasAttr(kNameSpaceID_None, nsGkAtoms::left) ||
popup->HasAttr(kNameSpaceID_None, nsGkAtoms::top)))
{
nsAutoString left, top;
left.AppendInt(aLeft);
top.AppendInt(aTop);
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, 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);
}
bool
nsMenuPopupFrame::GetAutoPosition()
{
return mShouldAutoPosition;
}
void
nsMenuPopupFrame::SetAutoPosition(bool aShouldAutoPosition)
{
mShouldAutoPosition = aShouldAutoPosition;
}
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)
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 nsContainerFrame::CreateViewForFrame
* 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));
}
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