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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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
#include "nsNativeTheme.h"
#include "nsIWidget.h"
#include "mozilla/dom/Document.h"
#include "nsIContent.h"
#include "nsIFrame.h"
#include "nsIScrollableFrame.h"
#include "nsLayoutUtils.h"
#include "nsNumberControlFrame.h"
#include "nsPresContext.h"
#include "nsString.h"
#include "nsNameSpaceManager.h"
#include "nsStyleConsts.h"
#include "nsPIDOMWindow.h"
#include "nsProgressFrame.h"
#include "nsMeterFrame.h"
#include "nsRangeFrame.h"
#include "nsCSSRendering.h"
#include "ImageContainer.h"
#include "mozilla/ComputedStyle.h"
#include "mozilla/dom/Element.h"
#include "mozilla/dom/HTMLBodyElement.h"
#include "mozilla/dom/HTMLInputElement.h"
#include "mozilla/dom/HTMLProgressElement.h"
#include "mozilla/PresShell.h"
#include "mozilla/StaticPrefs_layout.h"
#include "mozilla/dom/DocumentInlines.h"
#include <algorithm>
using namespace mozilla;
using namespace mozilla::dom;
nsNativeTheme::nsNativeTheme() : mAnimatedContentTimeout(UINT32_MAX) {}
NS_IMPL_ISUPPORTS(nsNativeTheme, nsITimerCallback, nsINamed)
/* static */ ElementState nsNativeTheme::GetContentState(
nsIFrame* aFrame, StyleAppearance aAppearance) {
if (!aFrame) {
return ElementState();
}
nsIContent* frameContent = aFrame->GetContent();
if (!frameContent || !frameContent->IsElement()) {
return ElementState();
}
const bool isXULElement = frameContent->IsXULElement();
if (isXULElement) {
if (aAppearance == StyleAppearance::Checkbox ||
aAppearance == StyleAppearance::Radio ||
aAppearance == StyleAppearance::ToolbarbuttonDropdown ||
aAppearance == StyleAppearance::ButtonArrowPrevious ||
aAppearance == StyleAppearance::ButtonArrowNext ||
aAppearance == StyleAppearance::ButtonArrowUp ||
#ifdef MOZ_WIDGET_GTK
aAppearance == StyleAppearance::MozWindowButtonClose ||
aAppearance == StyleAppearance::MozWindowButtonMinimize ||
aAppearance == StyleAppearance::MozWindowButtonRestore ||
aAppearance == StyleAppearance::MozWindowButtonMaximize ||
#endif
aAppearance == StyleAppearance::ButtonArrowDown) {
aFrame = aFrame->GetParent();
frameContent = aFrame->GetContent();
}
MOZ_ASSERT(frameContent && frameContent->IsElement());
}
ElementState flags = frameContent->AsElement()->StyleState();
nsNumberControlFrame* numberControlFrame =
nsNumberControlFrame::GetNumberControlFrameForSpinButton(aFrame);
if (numberControlFrame &&
numberControlFrame->GetContent()->AsElement()->StyleState().HasState(
ElementState::DISABLED)) {
flags |= ElementState::DISABLED;
}
if (!isXULElement) {
return flags;
}
if (CheckBooleanAttr(aFrame, nsGkAtoms::disabled)) {
flags |= ElementState::DISABLED;
}
switch (aAppearance) {
case StyleAppearance::Radio: {
if (CheckBooleanAttr(aFrame, nsGkAtoms::focused)) {
flags |= ElementState::FOCUS;
nsPIDOMWindowOuter* window =
aFrame->GetContent()->OwnerDoc()->GetWindow();
if (window && window->ShouldShowFocusRing()) {
flags |= ElementState::FOCUSRING;
}
}
if (CheckBooleanAttr(aFrame, nsGkAtoms::selected) ||
CheckBooleanAttr(aFrame, nsGkAtoms::checked)) {
flags |= ElementState::CHECKED;
}
break;
}
case StyleAppearance::Checkbox: {
if (CheckBooleanAttr(aFrame, nsGkAtoms::checked)) {
flags |= ElementState::CHECKED;
} else if (CheckBooleanAttr(aFrame, nsGkAtoms::indeterminate)) {
flags |= ElementState::INDETERMINATE;
}
break;
}
case StyleAppearance::Toolbarbutton:
if (CheckBooleanAttr(aFrame, nsGkAtoms::open)) {
flags |= ElementState::HOVER | ElementState::ACTIVE;
}
break;
case StyleAppearance::MenulistButton:
case StyleAppearance::Menulist:
case StyleAppearance::NumberInput:
case StyleAppearance::Textfield:
case StyleAppearance::Searchfield:
case StyleAppearance::Textarea: {
if (CheckBooleanAttr(aFrame, nsGkAtoms::focused)) {
flags |= ElementState::FOCUS | ElementState::FOCUSRING;
}
break;
}
default:
break;
}
return flags;
}
/* static */
bool nsNativeTheme::CheckBooleanAttr(nsIFrame* aFrame, nsAtom* aAtom) {
if (!aFrame) return false;
nsIContent* content = aFrame->GetContent();
if (!content || !content->IsElement()) return false;
if (content->IsHTMLElement()) return content->AsElement()->HasAttr(aAtom);
// For XML/XUL elements, an attribute must be equal to the literal
// string "true" to be counted as true. An empty string should _not_
// be counted as true.
return content->AsElement()->AttrValueIs(kNameSpaceID_None, aAtom, u"true"_ns,
eCaseMatters);
}
/* static */
int32_t nsNativeTheme::CheckIntAttr(nsIFrame* aFrame, nsAtom* aAtom,
int32_t defaultValue) {
if (!aFrame) return defaultValue;
nsIContent* content = aFrame->GetContent();
if (!content || !content->IsElement()) return defaultValue;
nsAutoString attr;
content->AsElement()->GetAttr(aAtom, attr);
nsresult err;
int32_t value = attr.ToInteger(&err);
if (attr.IsEmpty() || NS_FAILED(err)) return defaultValue;
return value;
}
/* static */
double nsNativeTheme::GetProgressValue(nsIFrame* aFrame) {
if (!aFrame || !aFrame->GetContent()->IsHTMLElement(nsGkAtoms::progress)) {
return 0;
}
return static_cast<HTMLProgressElement*>(aFrame->GetContent())->Value();
}
/* static */
double nsNativeTheme::GetProgressMaxValue(nsIFrame* aFrame) {
if (!aFrame || !aFrame->GetContent()->IsHTMLElement(nsGkAtoms::progress)) {
return 100;
}
return static_cast<HTMLProgressElement*>(aFrame->GetContent())->Max();
}
bool nsNativeTheme::IsButtonTypeMenu(nsIFrame* aFrame) {
if (!aFrame) return false;
nsIContent* content = aFrame->GetContent();
return content->IsXULElement(nsGkAtoms::button) &&
content->AsElement()->AttrValueIs(kNameSpaceID_None, nsGkAtoms::type,
u"menu"_ns, eCaseMatters);
}
bool nsNativeTheme::IsPressedButton(nsIFrame* aFrame) {
ElementState state = GetContentState(aFrame, StyleAppearance::Toolbarbutton);
if (state.HasState(ElementState::DISABLED)) {
return false;
}
return IsOpenButton(aFrame) ||
state.HasAllStates(ElementState::ACTIVE | ElementState::HOVER);
}
bool nsNativeTheme::IsWidgetStyled(nsPresContext* aPresContext,
nsIFrame* aFrame,
StyleAppearance aAppearance) {
// Check for specific widgets to see if HTML has overridden the style.
if (!aFrame) {
return false;
}
/**
* Progress bar appearance should be the same for the bar and the container
* frame. nsProgressFrame owns the logic and will tell us what we should do.
*/
if (aAppearance == StyleAppearance::Progresschunk ||
aAppearance == StyleAppearance::ProgressBar) {
nsProgressFrame* progressFrame = do_QueryFrame(
aAppearance == StyleAppearance::Progresschunk ? aFrame->GetParent()
: aFrame);
if (progressFrame) {
return !progressFrame->ShouldUseNativeStyle();
}
}
/**
* Meter bar appearance should be the same for the bar and the container
* frame. nsMeterFrame owns the logic and will tell us what we should do.
*/
if (aAppearance == StyleAppearance::Meterchunk ||
aAppearance == StyleAppearance::Meter) {
nsMeterFrame* meterFrame = do_QueryFrame(
aAppearance == StyleAppearance::Meterchunk ? aFrame->GetParent()
: aFrame);
if (meterFrame) {
return !meterFrame->ShouldUseNativeStyle();
}
}
/**
* An nsRangeFrame and its children are treated atomically when it
* comes to native theming (either all parts, or no parts, are themed).
* nsRangeFrame owns the logic and will tell us what we should do.
*/
if (aAppearance == StyleAppearance::Range ||
aAppearance == StyleAppearance::RangeThumb) {
nsRangeFrame* rangeFrame = do_QueryFrame(
aAppearance == StyleAppearance::RangeThumb ? aFrame->GetParent()
: aFrame);
if (rangeFrame) {
return !rangeFrame->ShouldUseNativeStyle();
}
}
return nsLayoutUtils::AuthorSpecifiedBorderBackgroundDisablesTheming(
aAppearance) &&
aFrame->GetContent()->IsHTMLElement() &&
aFrame->Style()->HasAuthorSpecifiedBorderOrBackground();
}
/* static */
bool nsNativeTheme::IsFrameRTL(nsIFrame* aFrame) {
if (!aFrame) {
return false;
}
return aFrame->GetWritingMode().IsPhysicalRTL();
}
/* static */
bool nsNativeTheme::IsHTMLContent(nsIFrame* aFrame) {
if (!aFrame) {
return false;
}
nsIContent* content = aFrame->GetContent();
return content && content->IsHTMLElement();
}
// treeheadercell:
nsNativeTheme::TreeSortDirection nsNativeTheme::GetTreeSortDirection(
nsIFrame* aFrame) {
if (!aFrame || !aFrame->GetContent()) return eTreeSortDirection_Natural;
static Element::AttrValuesArray strings[] = {nsGkAtoms::descending,
nsGkAtoms::ascending, nullptr};
nsIContent* content = aFrame->GetContent();
if (content->IsElement()) {
switch (content->AsElement()->FindAttrValueIn(
kNameSpaceID_None, nsGkAtoms::sortDirection, strings, eCaseMatters)) {
case 0:
return eTreeSortDirection_Descending;
case 1:
return eTreeSortDirection_Ascending;
}
}
return eTreeSortDirection_Natural;
}
bool nsNativeTheme::IsLastTreeHeaderCell(nsIFrame* aFrame) {
if (!aFrame) {
return false;
}
// A tree column picker button is always the last header cell.
if (aFrame->GetContent()->IsXULElement(nsGkAtoms::button)) {
return true;
}
// Find the parent tree.
nsIContent* parent = aFrame->GetContent()->GetParent();
while (parent && !parent->IsXULElement(nsGkAtoms::tree)) {
parent = parent->GetParent();
}
// If the column picker is visible, this can't be the last column.
if (parent && !parent->AsElement()->AttrValueIs(kNameSpaceID_None,
nsGkAtoms::hidecolumnpicker,
u"true"_ns, eCaseMatters))
return false;
while ((aFrame = aFrame->GetNextSibling())) {
if (aFrame->GetRect().Width() > 0) return false;
}
return true;
}
// tab:
bool nsNativeTheme::IsBottomTab(nsIFrame* aFrame) {
if (!aFrame) return false;
nsAutoString classStr;
if (aFrame->GetContent()->IsElement()) {
aFrame->GetContent()->AsElement()->GetAttr(nsGkAtoms::_class, classStr);
}
// FIXME: This looks bogus, shouldn't this be looking at GetClasses()?
return !classStr.IsEmpty() && classStr.Find(u"tab-bottom") != kNotFound;
}
bool nsNativeTheme::IsFirstTab(nsIFrame* aFrame) {
if (!aFrame) return false;
for (nsIFrame* first : aFrame->GetParent()->PrincipalChildList()) {
if (first->GetRect().Width() > 0 &&
first->GetContent()->IsXULElement(nsGkAtoms::tab))
return (first == aFrame);
}
return false;
}
bool nsNativeTheme::IsHorizontal(nsIFrame* aFrame) {
if (!aFrame) return false;
if (!aFrame->GetContent()->IsElement()) return true;
return !aFrame->GetContent()->AsElement()->AttrValueIs(
kNameSpaceID_None, nsGkAtoms::orient, nsGkAtoms::vertical, eCaseMatters);
}
bool nsNativeTheme::IsNextToSelectedTab(nsIFrame* aFrame, int32_t aOffset) {
if (!aFrame) return false;
if (aOffset == 0) return IsSelectedTab(aFrame);
int32_t thisTabIndex = -1, selectedTabIndex = -1;
nsIFrame* currentTab = aFrame->GetParent()->PrincipalChildList().FirstChild();
for (int32_t i = 0; currentTab; currentTab = currentTab->GetNextSibling()) {
if (currentTab->GetRect().Width() == 0) continue;
if (aFrame == currentTab) thisTabIndex = i;
if (IsSelectedTab(currentTab)) selectedTabIndex = i;
++i;
}
if (thisTabIndex == -1 || selectedTabIndex == -1) return false;
return (thisTabIndex - selectedTabIndex == aOffset);
}
bool nsNativeTheme::IsVerticalProgress(nsIFrame* aFrame) {
if (!aFrame) {
return false;
}
return IsVerticalMeter(aFrame);
}
bool nsNativeTheme::IsVerticalMeter(nsIFrame* aFrame) {
MOZ_ASSERT(aFrame, "You have to pass a non-null aFrame");
switch (aFrame->StyleDisplay()->mOrient) {
case StyleOrient::Horizontal:
return false;
case StyleOrient::Vertical:
return true;
case StyleOrient::Inline:
return aFrame->GetWritingMode().IsVertical();
case StyleOrient::Block:
return !aFrame->GetWritingMode().IsVertical();
}
MOZ_ASSERT_UNREACHABLE("unexpected -moz-orient value");
return false;
}
// menupopup:
bool nsNativeTheme::IsSubmenu(nsIFrame* aFrame, bool* aLeftOfParent) {
if (!aFrame) return false;
nsIContent* parentContent = aFrame->GetContent()->GetParent();
if (!parentContent || !parentContent->IsXULElement(nsGkAtoms::menu))
return false;
nsIFrame* parent = aFrame;
while ((parent = parent->GetParent())) {
if (parent->GetContent() == parentContent) {
if (aLeftOfParent) {
LayoutDeviceIntRect selfBounds, parentBounds;
selfBounds = aFrame->GetNearestWidget()->GetScreenBounds();
parentBounds = parent->GetNearestWidget()->GetScreenBounds();
*aLeftOfParent = selfBounds.X() < parentBounds.X();
}
return true;
}
}
return false;
}
bool nsNativeTheme::QueueAnimatedContentForRefresh(nsIContent* aContent,
uint32_t aMinimumFrameRate) {
NS_ASSERTION(aContent, "Null pointer!");
NS_ASSERTION(aMinimumFrameRate, "aMinimumFrameRate must be non-zero!");
NS_ASSERTION(aMinimumFrameRate <= 1000,
"aMinimumFrameRate must be less than 1000!");
uint32_t timeout = 1000 / aMinimumFrameRate;
timeout = std::min(mAnimatedContentTimeout, timeout);
if (!mAnimatedContentTimer) {
mAnimatedContentTimer = NS_NewTimer();
NS_ENSURE_TRUE(mAnimatedContentTimer, false);
}
if (mAnimatedContentList.IsEmpty() || timeout != mAnimatedContentTimeout) {
nsresult rv;
if (!mAnimatedContentList.IsEmpty()) {
rv = mAnimatedContentTimer->Cancel();
NS_ENSURE_SUCCESS(rv, false);
}
if (XRE_IsContentProcess() && NS_IsMainThread()) {
mAnimatedContentTimer->SetTarget(GetMainThreadSerialEventTarget());
}
rv = mAnimatedContentTimer->InitWithCallback(this, timeout,
nsITimer::TYPE_ONE_SHOT);
NS_ENSURE_SUCCESS(rv, false);
mAnimatedContentTimeout = timeout;
}
// pretended earlier.
mAnimatedContentList.AppendElement(aContent);
return true;
}
NS_IMETHODIMP
nsNativeTheme::Notify(nsITimer* aTimer) {
NS_ASSERTION(aTimer == mAnimatedContentTimer, "Wrong timer!");
// XXX Assumes that calling nsIFrame::Invalidate won't reenter
// QueueAnimatedContentForRefresh.
uint32_t count = mAnimatedContentList.Length();
for (uint32_t index = 0; index < count; index++) {
nsIFrame* frame = mAnimatedContentList[index]->GetPrimaryFrame();
if (frame) {
frame->InvalidateFrame();
}
}
mAnimatedContentList.Clear();
mAnimatedContentTimeout = UINT32_MAX;
return NS_OK;
}
NS_IMETHODIMP
nsNativeTheme::GetName(nsACString& aName) {
aName.AssignLiteral("nsNativeTheme");
return NS_OK;
}
nsIFrame* nsNativeTheme::GetAdjacentSiblingFrameWithSameAppearance(
nsIFrame* aFrame, bool aNextSibling) {
if (!aFrame) return nullptr;
// Find the next visible sibling.
nsIFrame* sibling = aFrame;
do {
sibling =
aNextSibling ? sibling->GetNextSibling() : sibling->GetPrevSibling();
} while (sibling && sibling->GetRect().Width() == 0);
// Check same appearance and adjacency.
if (!sibling ||
sibling->StyleDisplay()->EffectiveAppearance() !=
aFrame->StyleDisplay()->EffectiveAppearance() ||
(sibling->GetRect().XMost() != aFrame->GetRect().X() &&
aFrame->GetRect().XMost() != sibling->GetRect().X()))
return nullptr;
return sibling;
}
bool nsNativeTheme::IsRangeHorizontal(nsIFrame* aFrame) {
nsIFrame* rangeFrame = aFrame;
if (!rangeFrame->IsRangeFrame()) {
// If the thumb's frame is passed in, get its range parent:
rangeFrame = aFrame->GetParent();
}
if (rangeFrame->IsRangeFrame()) {
return static_cast<nsRangeFrame*>(rangeFrame)->IsHorizontal();
}
// Not actually a range frame - just use the ratio of the frame's size to
// decide:
return aFrame->GetSize().width >= aFrame->GetSize().height;
}
/* static */
bool nsNativeTheme::IsDarkBackgroundForScrollbar(nsIFrame* aFrame) {
// Try to find the scrolled frame. Note that for stuff like xul <tree> there
// might be none.
{
nsIFrame* frame = aFrame;
nsIScrollableFrame* scrollFrame = nullptr;
while (!scrollFrame && frame) {
scrollFrame = frame->GetScrollTargetFrame();
frame = frame->GetParent();
}
if (scrollFrame) {
aFrame = scrollFrame->GetScrolledFrame();
} else {
// Leave aFrame untouched.
}
}
return IsDarkBackground(aFrame);
}
/* static */
bool nsNativeTheme::IsDarkBackground(nsIFrame* aFrame) {
auto color =
nsCSSRendering::FindEffectiveBackgroundColor(
aFrame, /* aStopAtThemed = */ false, /* aPreferBodyToCanvas = */ true)
.mColor;
return LookAndFeel::IsDarkColor(color);
}
/*static*/
bool nsNativeTheme::IsWidgetScrollbarPart(StyleAppearance aAppearance) {
switch (aAppearance) {
case StyleAppearance::ScrollbarVertical:
case StyleAppearance::ScrollbarHorizontal:
case StyleAppearance::ScrollbarbuttonUp:
case StyleAppearance::ScrollbarbuttonDown:
case StyleAppearance::ScrollbarbuttonLeft:
case StyleAppearance::ScrollbarbuttonRight:
case StyleAppearance::ScrollbarthumbVertical:
case StyleAppearance::ScrollbarthumbHorizontal:
case StyleAppearance::ScrollbartrackHorizontal:
case StyleAppearance::ScrollbartrackVertical:
case StyleAppearance::Scrollcorner:
return true;
default:
return false;
}
}
/*static*/
bool nsNativeTheme::IsWidgetAlwaysNonNative(nsIFrame* aFrame,
StyleAppearance aAppearance) {
return IsWidgetScrollbarPart(aAppearance) ||
aAppearance == StyleAppearance::FocusOutline ||
(aFrame && aFrame->StyleUI()->mMozTheme == StyleMozTheme::NonNative);
}