static PRUnichar*
GetValueAt(nsIFrame* aTableOrRowFrame,
const FramePropertyDescriptor* aProperty,
nsIAtom* aAttribute,
int32_t aRowOrColIndex)
{
FrameProperties props = aTableOrRowFrame->Properties();
nsValueList* valueList = static_cast<nsValueList*>(props.Get(aProperty));
if (!valueList) {
// The property isn't there yet, so set it
nsAutoString values;
aTableOrRowFrame->GetContent()->GetAttr(kNameSpaceID_None, aAttribute, values);
if (!values.IsEmpty())
valueList = new nsValueList(values);
if (!valueList || !valueList->mArray.Length()) {
delete valueList; // ok either way, delete is null safe
return nullptr;
}
props.Set(aProperty, valueList);
}
int32_t count = valueList->mArray.Length();
return (aRowOrColIndex < count)
? valueList->mArray[aRowOrColIndex]
: valueList->mArray[count-1];
}
static nsSVGRenderingObserver *
GetEffectPropertyForURI(nsIURI *aURI, nsIFrame *aFrame,
const FramePropertyDescriptor *aProperty,
nsSVGRenderingObserver * (* aCreate)(nsIURI *, nsIFrame *, bool))
{
if (!aURI)
return nsnull;
FrameProperties props = aFrame->Properties();
nsSVGEffects::URIObserverHashtable *hashtable =
static_cast<nsSVGEffects::URIObserverHashtable*>(props.Get(aProperty));
if (!hashtable) {
hashtable = new nsSVGEffects::URIObserverHashtable();
hashtable->Init();
props.Set(aProperty, hashtable);
}
nsSVGRenderingObserver* prop =
static_cast<nsSVGRenderingObserver*>(hashtable->GetWeak(aURI));
if (!prop) {
bool watchImage = aProperty == nsSVGEffects::BackgroundImageProperty();
prop = aCreate(aURI, aFrame, watchImage);
hashtable->Put(aURI, prop);
}
return prop;
}
// static
StickyScrollContainer*
StickyScrollContainer::GetStickyScrollContainerForScrollFrame(nsIFrame* aFrame)
{
FrameProperties props = aFrame->Properties();
return static_cast<StickyScrollContainer*>
(props.Get(StickyScrollContainerProperty()));
}
// static
void
StickyScrollContainer::NotifyReparentedFrameAcrossScrollFrameBoundary(nsIFrame* aFrame,
nsIFrame* aOldParent)
{
nsIScrollableFrame* oldScrollFrame =
nsLayoutUtils::GetNearestScrollableFrame(aOldParent,
nsLayoutUtils::SCROLLABLE_SAME_DOC |
nsLayoutUtils::SCROLLABLE_INCLUDE_HIDDEN);
if (!oldScrollFrame) {
// XXX maybe aFrame has sticky descendants that can be sticky now, but
// we aren't going to handle that.
return;
}
FrameProperties props = static_cast<nsIFrame*>(do_QueryFrame(oldScrollFrame))->
Properties();
StickyScrollContainer* oldSSC = static_cast<StickyScrollContainer*>
(props.Get(StickyScrollContainerProperty()));
if (!oldSSC) {
// aOldParent had no sticky descendants, so aFrame doesn't have any sticky
// descendants, and we're done here.
return;
}
auto i = oldSSC->mFrames.Length();
while (i-- > 0) {
nsIFrame* f = oldSSC->mFrames[i];
StickyScrollContainer* newSSC = GetStickyScrollContainerForFrame(f);
if (newSSC != oldSSC) {
oldSSC->RemoveFrame(f);
if (newSSC) {
newSSC->AddFrame(f);
}
}
}
}
static LayerActivity*
GetLayerActivity(nsIFrame* aFrame)
{
if (!aFrame->HasAnyStateBits(NS_FRAME_HAS_LAYER_ACTIVITY_PROPERTY)) {
return nullptr;
}
FrameProperties properties = aFrame->Properties();
return static_cast<LayerActivity*>(properties.Get(LayerActivityProperty()));
}
static LayerActivity*
GetLayerActivityForUpdate(nsIFrame* aFrame)
{
FrameProperties properties = aFrame->Properties();
LayerActivity* layerActivity =
static_cast<LayerActivity*>(properties.Get(LayerActivityProperty()));
if (layerActivity) {
gLayerActivityTracker->MarkUsed(layerActivity);
} else {
if (!gLayerActivityTracker) {
gLayerActivityTracker = new LayerActivityTracker();
}
layerActivity = new LayerActivity(aFrame);
gLayerActivityTracker->AddObject(layerActivity);
aFrame->AddStateBits(NS_FRAME_HAS_LAYER_ACTIVITY_PROPERTY);
properties.Set(LayerActivityProperty(), layerActivity);
}
return layerActivity;
}
void
nsFloatManager::StoreRegionFor(nsIFrame* aFloat,
nsRect& aRegion)
{
nsRect rect = aFloat->GetRect();
FrameProperties props = aFloat->Properties();
if (aRegion.IsEqualEdges(rect)) {
props.Delete(FloatRegionProperty());
}
else {
nsMargin* storedMargin = static_cast<nsMargin*>
(props.Get(FloatRegionProperty()));
if (!storedMargin) {
storedMargin = new nsMargin();
props.Set(FloatRegionProperty(), storedMargin);
}
*storedMargin = aRegion - rect;
}
}
static nsSVGFilterProperty*
GetOrCreateFilterProperty(nsIFrame *aFrame)
{
const nsStyleSVGReset* style = aFrame->StyleSVGReset();
if (!style->HasFilters())
return nullptr;
FrameProperties props = aFrame->Properties();
nsSVGFilterProperty *prop =
static_cast<nsSVGFilterProperty*>(props.Get(nsSVGEffects::FilterProperty()));
if (prop)
return prop;
prop = new nsSVGFilterProperty(style->mFilters, aFrame);
if (!prop)
return nullptr;
NS_ADDREF(prop);
props.Set(nsSVGEffects::FilterProperty(), static_cast<nsISupports*>(prop));
return prop;
}
void
nsFloatManager::StoreRegionFor(WritingMode aWM, nsIFrame* aFloat,
const LogicalRect& aRegion,
const nsSize& aContainerSize)
{
nsRect region = aRegion.GetPhysicalRect(aWM, aContainerSize);
nsRect rect = aFloat->GetRect();
FrameProperties props = aFloat->Properties();
if (region.IsEqualEdges(rect)) {
props.Delete(FloatRegionProperty());
}
else {
nsMargin* storedMargin = props.Get(FloatRegionProperty());
if (!storedMargin) {
storedMargin = new nsMargin();
props.Set(FloatRegionProperty(), storedMargin);
}
*storedMargin = region - rect;
}
}
static nsSVGRenderingObserver *
GetEffectProperty(nsIURI *aURI, nsIFrame *aFrame,
const FramePropertyDescriptor *aProperty,
nsSVGRenderingObserver * (* aCreate)(nsIURI *, nsIFrame *, bool))
{
if (!aURI)
return nsnull;
FrameProperties props = aFrame->Properties();
nsSVGRenderingObserver *prop =
static_cast<nsSVGRenderingObserver*>(props.Get(aProperty));
if (prop)
return prop;
prop = aCreate(aURI, aFrame, false);
if (!prop)
return nsnull;
NS_ADDREF(prop);
props.Set(aProperty, static_cast<nsISupports*>(prop));
return prop;
}
/* This method looks for a property that applies to a cell, but it looks
* recursively because some cell properties can come from the cell, a row,
* a table, etc. This function searches through the heirarchy for a property
* and returns its value. The function stops searching after checking a <mtable>
* frame.
*/
static nsTArray<int8_t>*
FindCellProperty(const nsIFrame* aCellFrame,
const FramePropertyDescriptor* aFrameProperty)
{
const nsIFrame* currentFrame = aCellFrame;
nsTArray<int8_t>* propertyData = nullptr;
while (currentFrame) {
FrameProperties props = currentFrame->Properties();
propertyData = static_cast<nsTArray<int8_t>*>(props.Get(aFrameProperty));
bool frameIsTable = (currentFrame->GetType() == nsGkAtoms::tableFrame);
if (propertyData || frameIsTable)
currentFrame = nullptr; // A null frame pointer exits the loop
else
currentFrame = currentFrame->GetParent(); // Go to the parent frame
}
return propertyData;
}
// static
void
StickyScrollContainer::ComputeStickyOffsets(nsIFrame* aFrame)
{
nsIScrollableFrame* scrollableFrame =
nsLayoutUtils::GetNearestScrollableFrame(aFrame->GetParent(),
nsLayoutUtils::SCROLLABLE_SAME_DOC |
nsLayoutUtils::SCROLLABLE_INCLUDE_HIDDEN);
if (!scrollableFrame) {
// Bail.
return;
}
nsSize scrollContainerSize = scrollableFrame->GetScrolledFrame()->
GetContentRectRelativeToSelf().Size();
nsMargin computedOffsets;
const nsStylePosition* position = aFrame->StylePosition();
computedOffsets.left = ComputeStickySideOffset(eSideLeft, position->mOffset,
scrollContainerSize.width);
computedOffsets.right = ComputeStickySideOffset(eSideRight, position->mOffset,
scrollContainerSize.width);
computedOffsets.top = ComputeStickySideOffset(eSideTop, position->mOffset,
scrollContainerSize.height);
computedOffsets.bottom = ComputeStickySideOffset(eSideBottom, position->mOffset,
scrollContainerSize.height);
// Store the offset
FrameProperties props = aFrame->Properties();
nsMargin* offsets = static_cast<nsMargin*>
(props.Get(nsIFrame::ComputedOffsetProperty()));
if (offsets) {
*offsets = computedOffsets;
} else {
props.Set(nsIFrame::ComputedOffsetProperty(),
new nsMargin(computedOffsets));
}
}
// static
StickyScrollContainer*
StickyScrollContainer::GetStickyScrollContainerForFrame(nsIFrame* aFrame)
{
nsIScrollableFrame* scrollFrame =
nsLayoutUtils::GetNearestScrollableFrame(aFrame->GetParent(),
nsLayoutUtils::SCROLLABLE_SAME_DOC |
nsLayoutUtils::SCROLLABLE_INCLUDE_HIDDEN);
if (!scrollFrame) {
// We might not find any, for instance in the case of
// <html style="position: fixed">
return nullptr;
}
FrameProperties props = static_cast<nsIFrame*>(do_QueryFrame(scrollFrame))->
Properties();
StickyScrollContainer* s = static_cast<StickyScrollContainer*>
(props.Get(StickyScrollContainerProperty()));
if (!s) {
s = new StickyScrollContainer(scrollFrame);
props.Set(StickyScrollContainerProperty(), s);
}
return s;
}
nscoord
nsTableRowFrame::GetUnpaginatedHeight(nsPresContext* aPresContext)
{
FrameProperties props = GetFirstInFlow()->Properties();
return NS_PTR_TO_INT32(props.Get(RowUnpaginatedHeightProperty()));
}