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-rw-r--r--layout/style/nsComputedDOMStyle.cpp67
-rw-r--r--layout/style/nsComputedDOMStyle.h12
2 files changed, 42 insertions, 37 deletions
diff --git a/layout/style/nsComputedDOMStyle.cpp b/layout/style/nsComputedDOMStyle.cpp
index 65c1d698c..647f7f6dc 100644
--- a/layout/style/nsComputedDOMStyle.cpp
+++ b/layout/style/nsComputedDOMStyle.cpp
@@ -64,13 +64,13 @@ using namespace mozilla::dom;
*/
already_AddRefed<nsComputedDOMStyle>
-NS_NewComputedDOMStyle(dom::Element* aElement, const nsAString& aPseudoElt,
- nsIPresShell* aPresShell,
+NS_NewComputedDOMStyle(dom::Element* aElement,
+ const nsAString& aPseudoElt,
+ nsIDocument* aDocument,
nsComputedDOMStyle::StyleType aStyleType)
{
RefPtr<nsComputedDOMStyle> computedStyle;
- computedStyle = new nsComputedDOMStyle(aElement, aPseudoElt, aPresShell,
- aStyleType);
+ computedStyle = new nsComputedDOMStyle(aElement, aPseudoElt, aDocument, aStyleType);
return computedStyle.forget();
}
@@ -243,7 +243,7 @@ nsComputedStyleMap::Update()
nsComputedDOMStyle::nsComputedDOMStyle(dom::Element* aElement,
const nsAString& aPseudoElt,
- nsIPresShell* aPresShell,
+ nsIDocument* aDocument,
StyleType aStyleType)
: mDocumentWeak(nullptr)
, mOuterFrame(nullptr)
@@ -254,11 +254,13 @@ nsComputedDOMStyle::nsComputedDOMStyle(dom::Element* aElement,
, mExposeVisitedStyle(false)
, mResolvedStyleContext(false)
{
- MOZ_ASSERT(aElement && aPresShell);
+ MOZ_ASSERT(aElement);
+ MOZ_ASSERT(aDocument);
+ // TODO(emilio, bug 548397, https://github.com/w3c/csswg-drafts/issues/2403):
+ // Should use aElement->OwnerDoc() instead.
+ mDocumentWeak = do_GetWeakReference(aDocument);
- mDocumentWeak = do_GetWeakReference(aPresShell->GetDocument());
-
- mContent = aElement;
+ mElement = aElement;
if (!DOMStringIsNull(aPseudoElt) && !aPseudoElt.IsEmpty() &&
aPseudoElt.First() == char16_t(':')) {
@@ -285,8 +287,6 @@ nsComputedDOMStyle::nsComputedDOMStyle(dom::Element* aElement,
mPseudo = nullptr;
}
}
-
- MOZ_ASSERT(aPresShell->GetPresContext());
}
nsComputedDOMStyle::~nsComputedDOMStyle()
@@ -297,13 +297,13 @@ nsComputedDOMStyle::~nsComputedDOMStyle()
NS_IMPL_CYCLE_COLLECTION_CLASS(nsComputedDOMStyle)
NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(nsComputedDOMStyle)
- tmp->ClearStyleContext(); // remove observer before clearing mContent
- NS_IMPL_CYCLE_COLLECTION_UNLINK(mContent)
+ tmp->ClearStyleContext(); // remove observer before clearing mElement
+ NS_IMPL_CYCLE_COLLECTION_UNLINK(mElement)
NS_IMPL_CYCLE_COLLECTION_UNLINK_PRESERVED_WRAPPER
NS_IMPL_CYCLE_COLLECTION_UNLINK_END
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(nsComputedDOMStyle)
- NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mContent)
+ NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mElement)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
NS_IMPL_CYCLE_COLLECTION_TRACE_WRAPPERCACHE(nsComputedDOMStyle)
@@ -366,8 +366,6 @@ nsComputedDOMStyle::SetCssText(const nsAString& aCssText)
NS_IMETHODIMP
nsComputedDOMStyle::GetLength(uint32_t* aLength)
{
- NS_PRECONDITION(aLength, "Null aLength! Prepare to die!");
-
uint32_t length = GetComputedStyleMap()->Length();
// Make sure we have up to date style so that we can include custom
@@ -375,6 +373,8 @@ nsComputedDOMStyle::GetLength(uint32_t* aLength)
UpdateCurrentStyleSources(false);
if (mStyleContext) {
length += StyleVariables()->mVariables.Count();
+ } else {
+ length = 0;
}
*aLength = length;
@@ -616,7 +616,7 @@ nsComputedDOMStyle::ClearStyleContext()
{
if (mResolvedStyleContext) {
mResolvedStyleContext = false;
- mContent->RemoveMutationObserver(this);
+ mElement->RemoveMutationObserver(this);
}
mStyleContext = nullptr;
}
@@ -626,7 +626,7 @@ nsComputedDOMStyle::SetResolvedStyleContext(RefPtr<nsStyleContext>&& aContext)
{
if (!mResolvedStyleContext) {
mResolvedStyleContext = true;
- mContent->AddMutationObserver(this);
+ mElement->AddMutationObserver(this);
}
mStyleContext = aContext;
}
@@ -651,7 +651,7 @@ nsComputedDOMStyle::UpdateCurrentStyleSources(bool aNeedsLayoutFlush)
// Flush _before_ getting the presshell, since that could create a new
// presshell. Also note that we want to flush the style on the document
- // we're computing style in, not on the document mContent is in -- the two
+ // we're computing style in, not on the document mElement is in -- the two
// may be different.
document->FlushPendingNotifications(
aNeedsLayoutFlush ? Flush_Layout : Flush_Style);
@@ -659,7 +659,7 @@ nsComputedDOMStyle::UpdateCurrentStyleSources(bool aNeedsLayoutFlush)
mFlushedPendingReflows = aNeedsLayoutFlush;
#endif
- nsCOMPtr<nsIPresShell> presShellForContent = GetPresShellForContent(mContent);
+ nsCOMPtr<nsIPresShell> presShellForContent = GetPresShellForContent(mElement);
if (presShellForContent && presShellForContent != document->GetShell()) {
presShellForContent->FlushPendingNotifications(Flush_Style);
}
@@ -674,7 +674,11 @@ nsComputedDOMStyle::UpdateCurrentStyleSources(bool aNeedsLayoutFlush)
mPresShell->GetPresContext()->GetRestyleGeneration();
if (mStyleContext) {
- if (mStyleContextGeneration == currentGeneration) {
+ // We can't rely on the undisplayed restyle generation if mElement is
+ // out-of-document, since that generation is not incremented for DOM changes
+ // on out-of-document elements.
+ if (mStyleContextGeneration == currentGeneration &&
+ mElement->IsInComposedDoc()) {
// Our cached style context is still valid.
return;
}
@@ -683,12 +687,12 @@ nsComputedDOMStyle::UpdateCurrentStyleSources(bool aNeedsLayoutFlush)
mStyleContext = nullptr;
}
- // XXX the !mContent->IsHTMLElement(nsGkAtoms::area)
+ // XXX the !mElement->IsHTMLElement(nsGkAtoms::area)
// check is needed due to bug 135040 (to avoid using
// mPrimaryFrame). Remove it once that's fixed.
if (!mPseudo && mStyleType == eAll &&
- !mContent->IsHTMLElement(nsGkAtoms::area)) {
- mOuterFrame = mContent->GetPrimaryFrame();
+ !mElement->IsHTMLElement(nsGkAtoms::area)) {
+ mOuterFrame = mElement->GetPrimaryFrame();
mInnerFrame = mOuterFrame;
if (mOuterFrame) {
nsIAtom* type = mOuterFrame->GetType();
@@ -731,7 +735,7 @@ nsComputedDOMStyle::UpdateCurrentStyleSources(bool aNeedsLayoutFlush)
// Need to resolve a style context
RefPtr<nsStyleContext> resolvedStyleContext =
nsComputedDOMStyle::GetStyleContextForElementNoFlush(
- mContent->AsElement(),
+ mElement,
mPseudo,
presShellForContent ? presShellForContent.get() : mPresShell,
mStyleType);
@@ -824,7 +828,6 @@ nsComputedDOMStyle::GetPropertyCSSValue(const nsAString& aPropertyName, ErrorRes
UpdateCurrentStyleSources(needsLayoutFlush);
if (!mStyleContext) {
- aRv.Throw(NS_ERROR_NOT_AVAILABLE);
return nullptr;
}
@@ -2861,7 +2864,7 @@ nsComputedDOMStyle::DoGetGridTemplateColumns()
nsGridContainerFrame* gridFrame =
nsGridContainerFrame::GetGridFrameWithComputedInfo(
- mContent->GetPrimaryFrame());
+ mElement->GetPrimaryFrame());
if (gridFrame) {
info = gridFrame->GetComputedTemplateColumns();
@@ -2877,7 +2880,7 @@ nsComputedDOMStyle::DoGetGridTemplateRows()
nsGridContainerFrame* gridFrame =
nsGridContainerFrame::GetGridFrameWithComputedInfo(
- mContent->GetPrimaryFrame());
+ mElement->GetPrimaryFrame());
if (gridFrame) {
info = gridFrame->GetComputedTemplateRows();
@@ -5214,8 +5217,10 @@ nsComputedDOMStyle::GetLineHeightCoord(nscoord& aCoord)
// lie about font size inflation since we lie about font size (since
// the inflation only applies to text)
- aCoord = ReflowInput::CalcLineHeight(mContent, mStyleContext,
- blockHeight, 1.0f);
+ aCoord = ReflowInput::CalcLineHeight(mElement,
+ mStyleContext,
+ blockHeight,
+ 1.0f);
// CalcLineHeight uses font->mFont.size, but we want to use
// font->mSize as the font size. Adjust for that. Also adjust for
@@ -6642,7 +6647,7 @@ nsComputedDOMStyle::DoGetCustomProperty(const nsAString& aPropertyName)
void
nsComputedDOMStyle::ParentChainChanged(nsIContent* aContent)
{
- NS_ASSERTION(mContent == aContent, "didn't we register mContent?");
+ NS_ASSERTION(mElement == aContent, "didn't we register mElement?");
NS_ASSERTION(mResolvedStyleContext,
"should have only registered an observer when "
"mResolvedStyleContext is true");
diff --git a/layout/style/nsComputedDOMStyle.h b/layout/style/nsComputedDOMStyle.h
index 77df71ec8..7fbf49afe 100644
--- a/layout/style/nsComputedDOMStyle.h
+++ b/layout/style/nsComputedDOMStyle.h
@@ -76,12 +76,12 @@ public:
nsComputedDOMStyle(mozilla::dom::Element* aElement,
const nsAString& aPseudoElt,
- nsIPresShell* aPresShell,
+ nsIDocument* aDocument,
StyleType aStyleType);
- virtual nsINode *GetParentObject() override
+ nsINode *GetParentObject() override
{
- return mContent;
+ return mElement;
}
static already_AddRefed<nsStyleContext>
@@ -667,9 +667,9 @@ private:
// We don't really have a good immutable representation of "presentation".
// Given the way GetComputedStyle is currently used, we should just grab the
- // 0th presshell, if any, from the document.
+ // presshell, if any, from the document.
nsWeakPtr mDocumentWeak;
- nsCOMPtr<nsIContent> mContent;
+ RefPtr<mozilla::dom::Element> mElement;
/**
* Strong reference to the style context we access data from. This can be
@@ -735,7 +735,7 @@ private:
already_AddRefed<nsComputedDOMStyle>
NS_NewComputedDOMStyle(mozilla::dom::Element* aElement,
const nsAString& aPseudoElt,
- nsIPresShell* aPresShell,
+ nsIDocument* aDocument,
nsComputedDOMStyle::StyleType aStyleType =
nsComputedDOMStyle::eAll);
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-14 08:25:30 +0000