bool
HTMLLinkAccessible::IsLinked() const
{
EventStates state = mContent->AsElement()->State();
return state.HasAtLeastOneOfStates(NS_EVENT_STATE_VISITED |
NS_EVENT_STATE_UNVISITED);
}
/* virtual */ void
nsHTMLStyleSheet::RulesMatching(ElementRuleProcessorData* aData)
{
nsRuleWalker *ruleWalker = aData->mRuleWalker;
if (aData->mElement->IsHTML() && !ruleWalker->AuthorStyleDisabled()) {
nsIAtom* tag = aData->mElement->Tag();
// if we have anchor colors, check if this is an anchor with an href
if (tag == nsGkAtoms::a) {
if (mLinkRule || mVisitedRule || mActiveRule) {
EventStates state =
nsCSSRuleProcessor::GetContentStateForVisitedHandling(
aData->mElement,
aData->mTreeMatchContext,
aData->mTreeMatchContext.VisitedHandling(),
// If the node being matched is a link,
// it's the relevant link.
nsCSSRuleProcessor::IsLink(aData->mElement));
if (mLinkRule && state.HasState(NS_EVENT_STATE_UNVISITED)) {
ruleWalker->Forward(mLinkRule);
aData->mTreeMatchContext.SetHaveRelevantLink();
}
else if (mVisitedRule && state.HasState(NS_EVENT_STATE_VISITED)) {
ruleWalker->Forward(mVisitedRule);
aData->mTreeMatchContext.SetHaveRelevantLink();
}
// No need to add to the active rule if it's not a link
if (mActiveRule && nsCSSRuleProcessor::IsLink(aData->mElement) &&
state.HasState(NS_EVENT_STATE_ACTIVE)) {
ruleWalker->Forward(mActiveRule);
}
} // end link/visited/active rules
} // end A tag
// add the rule to handle text-align for a <th>
else if (tag == nsGkAtoms::th) {
ruleWalker->Forward(mTableTHRule);
}
else if (tag == nsGkAtoms::table) {
if (aData->mTreeMatchContext.mCompatMode == eCompatibility_NavQuirks) {
ruleWalker->Forward(mTableQuirkColorRule);
}
}
} // end html element
// just get the style rules from the content. For SVG we do this even if
// author style is disabled, because SVG presentational hints aren't
// considered style.
if (!ruleWalker->AuthorStyleDisabled() || aData->mElement->IsSVG()) {
aData->mElement->WalkContentStyleRules(ruleWalker);
}
// http://www.whatwg.org/specs/web-apps/current-work/multipage/elements.html#language
// says that the xml:lang attribute overrides HTML's lang attribute,
// so we need to do this after WalkContentStyleRules.
nsString lang;
if (aData->mElement->GetAttr(kNameSpaceID_XML, nsGkAtoms::lang, lang)) {
ruleWalker->Forward(LangRuleFor(lang));
}
}
uint64_t HTMLButtonAccessible::NativeState() const {
uint64_t state = HyperTextAccessibleWrap::NativeState();
EventStates elmState = mContent->AsElement()->State();
if (elmState.HasState(NS_EVENT_STATE_DEFAULT)) state |= states::DEFAULT;
return state;
}
bool
nsNativeTheme::IsPressedButton(nsIFrame* aFrame)
{
EventStates eventState = GetContentState(aFrame, NS_THEME_TOOLBAR_BUTTON);
if (IsDisabled(aFrame, eventState))
return false;
return IsOpenButton(aFrame) ||
eventState.HasAllStates(NS_EVENT_STATE_ACTIVE | NS_EVENT_STATE_HOVER);
}
bool
HTMLLinkAccessible::IsLinked()
{
if (IsDefunct())
return false;
EventStates state = mContent->AsElement()->State();
return state.HasAtLeastOneOfStates(NS_EVENT_STATE_VISITED |
NS_EVENT_STATE_UNVISITED);
}
void
nsRangeFrame::BuildDisplayList(nsDisplayListBuilder* aBuilder,
const nsRect& aDirtyRect,
const nsDisplayListSet& aLists)
{
if (IsThemed()) {
DisplayBorderBackgroundOutline(aBuilder, aLists);
// Only create items for the thumb. Specifically, we do not want
// the track to paint, since *our* background is used to paint
// the track, and we don't want the unthemed track painting over
// the top of the themed track.
// This logic is copied from
// nsContainerFrame::BuildDisplayListForNonBlockChildren as
// called by BuildDisplayListForInline.
nsIFrame* thumb = mThumbDiv->GetPrimaryFrame();
if (thumb) {
nsDisplayListSet set(aLists, aLists.Content());
BuildDisplayListForChild(aBuilder, thumb, aDirtyRect, set, DISPLAY_CHILD_INLINE);
}
} else {
BuildDisplayListForInline(aBuilder, aDirtyRect, aLists);
}
// Draw a focus outline if appropriate:
if (!aBuilder->IsForPainting() ||
!IsVisibleForPainting(aBuilder)) {
// we don't want the focus ring item for hit-testing or if the item isn't
// in the area being [re]painted
return;
}
EventStates eventStates = mContent->AsElement()->State();
if (eventStates.HasState(NS_EVENT_STATE_DISABLED) ||
!eventStates.HasState(NS_EVENT_STATE_FOCUSRING)) {
return; // can't have focus or doesn't match :-moz-focusring
}
if (!mOuterFocusStyle ||
!mOuterFocusStyle->StyleBorder()->HasBorder()) {
// no ::-moz-focus-outer specified border (how style specifies a focus ring
// for range)
return;
}
const nsStyleDisplay *disp = StyleDisplay();
if (IsThemed(disp) &&
PresContext()->GetTheme()->ThemeDrawsFocusForWidget(disp->mAppearance)) {
return; // the native theme displays its own visual indication of focus
}
aLists.Content()->AppendNewToTop(
new (aBuilder) nsDisplayRangeFocusRing(aBuilder, this));
}
void
nsNumberControlFrame::SyncDisabledState()
{
EventStates eventStates = mContent->AsElement()->State();
if (eventStates.HasState(NS_EVENT_STATE_DISABLED)) {
mTextField->SetAttr(kNameSpaceID_None, nsGkAtoms::disabled, EmptyString(),
true);
} else {
mTextField->UnsetAttr(kNameSpaceID_None, nsGkAtoms::disabled, true);
}
}
EventStates
HTMLTextAreaElement::IntrinsicState() const
{
EventStates state = nsGenericHTMLFormElementWithState::IntrinsicState();
if (HasAttr(kNameSpaceID_None, nsGkAtoms::required)) {
state |= NS_EVENT_STATE_REQUIRED;
} else {
state |= NS_EVENT_STATE_OPTIONAL;
}
if (IsCandidateForConstraintValidation()) {
if (IsValid()) {
state |= NS_EVENT_STATE_VALID;
} else {
state |= NS_EVENT_STATE_INVALID;
// :-moz-ui-invalid always apply if the element suffers from a custom
// error and never applies if novalidate is set on the form owner.
if ((!mForm || !mForm->HasAttr(kNameSpaceID_None, nsGkAtoms::novalidate)) &&
(GetValidityState(VALIDITY_STATE_CUSTOM_ERROR) ||
(mCanShowInvalidUI && ShouldShowValidityUI()))) {
state |= NS_EVENT_STATE_MOZ_UI_INVALID;
}
}
// :-moz-ui-valid applies if all the following are true:
// 1. The element is not focused, or had either :-moz-ui-valid or
// :-moz-ui-invalid applying before it was focused ;
// 2. The element is either valid or isn't allowed to have
// :-moz-ui-invalid applying ;
// 3. The element has no form owner or its form owner doesn't have the
// novalidate attribute set ;
// 4. The element has already been modified or the user tried to submit the
// form owner while invalid.
if ((!mForm || !mForm->HasAttr(kNameSpaceID_None, nsGkAtoms::novalidate)) &&
(mCanShowValidUI && ShouldShowValidityUI() &&
(IsValid() || (state.HasState(NS_EVENT_STATE_MOZ_UI_INVALID) &&
!mCanShowInvalidUI)))) {
state |= NS_EVENT_STATE_MOZ_UI_VALID;
}
}
if (HasAttr(kNameSpaceID_None, nsGkAtoms::placeholder) &&
IsValueEmpty()) {
state |= NS_EVENT_STATE_PLACEHOLDERSHOWN;
}
return state;
}
void
nsButtonBoxFrame::Blurred()
{
NS_ASSERTION(mContent->IsElement(), "How do we have a non-element?");
EventStates buttonState = mContent->AsElement()->State();
if (mIsHandlingKeyEvent &&
buttonState.HasAllStates(NS_EVENT_STATE_ACTIVE |
NS_EVENT_STATE_HOVER)) {
// return to normal state
EventStateManager* esm = PresContext()->EventStateManager();
esm->SetContentState(nullptr, NS_EVENT_STATE_ACTIVE);
esm->SetContentState(nullptr, NS_EVENT_STATE_HOVER);
}
mIsHandlingKeyEvent = false;
}
uint64_t
HTMLLinkAccessible::NativeLinkState() const
{
EventStates eventState = mContent->AsElement()->State();
if (eventState.HasState(NS_EVENT_STATE_UNVISITED))
return states::LINKED;
if (eventState.HasState(NS_EVENT_STATE_VISITED))
return states::LINKED | states::TRAVERSED;
// This is a either named anchor (a link with also a name attribute) or
// it doesn't have any attributes. Check if 'click' event handler is
// registered, otherwise bail out.
return nsCoreUtils::HasClickListener(mContent) ? states::LINKED : 0;
}
void
nsNumberControlFrame::ContentStatesChanged(EventStates aStates)
{
if (aStates.HasState(NS_EVENT_STATE_DISABLED)) {
nsContentUtils::AddScriptRunner(new SyncDisabledStateEvent(this));
}
}
// progressbar:
bool
nsNativeTheme::IsIndeterminateProgress(nsIFrame* aFrame,
EventStates aEventStates)
{
if (!aFrame || !aFrame->GetContent())
return false;
if (aFrame->GetContent()->IsHTML(nsGkAtoms::progress)) {
return aEventStates.HasState(NS_EVENT_STATE_INDETERMINATE);
}
return aFrame->GetContent()->AttrValueIs(kNameSpaceID_None, nsGkAtoms::mode,
NS_LITERAL_STRING("undetermined"),
eCaseMatters);
}
bool
nsNativeTheme::IsDisabled(nsIFrame* aFrame, EventStates aEventStates)
{
if (!aFrame) {
return false;
}
nsIContent* content = aFrame->GetContent();
if (!content) {
return false;
}
if (content->IsHTML()) {
return aEventStates.HasState(NS_EVENT_STATE_DISABLED);
}
// 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->AttrValueIs(kNameSpaceID_None, nsGkAtoms::disabled,
NS_LITERAL_STRING("true"), eCaseMatters);
}
nsresult
nsButtonBoxFrame::HandleEvent(nsPresContext* aPresContext,
WidgetGUIEvent* aEvent,
nsEventStatus* aEventStatus)
{
NS_ENSURE_ARG_POINTER(aEventStatus);
if (nsEventStatus_eConsumeNoDefault == *aEventStatus) {
return NS_OK;
}
switch (aEvent->message) {
case NS_KEY_DOWN: {
WidgetKeyboardEvent* keyEvent = aEvent->AsKeyboardEvent();
if (!keyEvent) {
break;
}
if (NS_VK_SPACE == keyEvent->keyCode) {
EventStateManager* esm = aPresContext->EventStateManager();
// :hover:active state
esm->SetContentState(mContent, NS_EVENT_STATE_HOVER);
esm->SetContentState(mContent, NS_EVENT_STATE_ACTIVE);
mIsHandlingKeyEvent = true;
}
break;
}
// On mac, Return fires the default button, not the focused one.
#ifndef XP_MACOSX
case NS_KEY_PRESS: {
WidgetKeyboardEvent* keyEvent = aEvent->AsKeyboardEvent();
if (!keyEvent) {
break;
}
if (NS_VK_RETURN == keyEvent->keyCode) {
nsCOMPtr<nsIDOMXULButtonElement> buttonEl(do_QueryInterface(mContent));
if (buttonEl) {
MouseClicked(aPresContext, aEvent);
*aEventStatus = nsEventStatus_eConsumeNoDefault;
}
}
break;
}
#endif
case NS_KEY_UP: {
WidgetKeyboardEvent* keyEvent = aEvent->AsKeyboardEvent();
if (!keyEvent) {
break;
}
if (NS_VK_SPACE == keyEvent->keyCode) {
mIsHandlingKeyEvent = false;
// only activate on keyup if we're already in the :hover:active state
NS_ASSERTION(mContent->IsElement(), "How do we have a non-element?");
EventStates buttonState = mContent->AsElement()->State();
if (buttonState.HasAllStates(NS_EVENT_STATE_ACTIVE |
NS_EVENT_STATE_HOVER)) {
// return to normal state
EventStateManager* esm = aPresContext->EventStateManager();
esm->SetContentState(nullptr, NS_EVENT_STATE_ACTIVE);
esm->SetContentState(nullptr, NS_EVENT_STATE_HOVER);
MouseClicked(aPresContext, aEvent);
}
}
break;
}
case NS_MOUSE_CLICK: {
WidgetMouseEvent* mouseEvent = aEvent->AsMouseEvent();
if (mouseEvent->IsLeftClickEvent()) {
MouseClicked(aPresContext, mouseEvent);
}
break;
}
}
return nsBoxFrame::HandleEvent(aPresContext, aEvent, aEventStatus);
}
/**
* Calculates the change hint and the restyle hint for a given content state
* change.
*
* This is called from both Restyle managers.
*/
void
RestyleManagerBase::ContentStateChangedInternal(Element* aElement,
EventStates aStateMask,
nsChangeHint* aOutChangeHint,
nsRestyleHint* aOutRestyleHint)
{
MOZ_ASSERT(aOutChangeHint);
MOZ_ASSERT(aOutRestyleHint);
StyleSetHandle styleSet = PresContext()->StyleSet();
NS_ASSERTION(styleSet, "couldn't get style set");
*aOutChangeHint = nsChangeHint(0);
// Any change to a content state that affects which frames we construct
// must lead to a frame reconstruct here if we already have a frame.
// Note that we never decide through non-CSS means to not create frames
// based on content states, so if we already don't have a frame we don't
// need to force a reframe -- if it's needed, the HasStateDependentStyle
// call will handle things.
nsIFrame* primaryFrame = aElement->GetPrimaryFrame();
CSSPseudoElementType pseudoType = CSSPseudoElementType::NotPseudo;
if (primaryFrame) {
// If it's generated content, ignore LOADING/etc state changes on it.
if (!primaryFrame->IsGeneratedContentFrame() &&
aStateMask.HasAtLeastOneOfStates(NS_EVENT_STATE_BROKEN |
NS_EVENT_STATE_USERDISABLED |
NS_EVENT_STATE_SUPPRESSED |
NS_EVENT_STATE_LOADING)) {
*aOutChangeHint = nsChangeHint_ReconstructFrame;
} else {
uint8_t app = primaryFrame->StyleDisplay()->mAppearance;
if (app) {
nsITheme* theme = PresContext()->GetTheme();
if (theme &&
theme->ThemeSupportsWidget(PresContext(), primaryFrame, app)) {
bool repaint = false;
theme->WidgetStateChanged(primaryFrame, app, nullptr, &repaint,
nullptr);
if (repaint) {
*aOutChangeHint |= nsChangeHint_RepaintFrame;
}
}
}
}
pseudoType = primaryFrame->StyleContext()->GetPseudoType();
primaryFrame->ContentStatesChanged(aStateMask);
}
if (pseudoType >= CSSPseudoElementType::Count) {
*aOutRestyleHint = styleSet->HasStateDependentStyle(aElement, aStateMask);
} else if (nsCSSPseudoElements::PseudoElementSupportsUserActionState(
pseudoType)) {
// If aElement is a pseudo-element, we want to check to see whether there
// are any state-dependent rules applying to that pseudo.
Element* ancestor =
ElementForStyleContext(nullptr, primaryFrame, pseudoType);
*aOutRestyleHint = styleSet->HasStateDependentStyle(ancestor, pseudoType,
aElement, aStateMask);
} else {
*aOutRestyleHint = nsRestyleHint(0);
}
if (aStateMask.HasState(NS_EVENT_STATE_HOVER) && *aOutRestyleHint != 0) {
IncrementHoverGeneration();
}
if (aStateMask.HasState(NS_EVENT_STATE_VISITED)) {
// Exposing information to the page about whether the link is
// visited or not isn't really something we can worry about here.
// FIXME: We could probably do this a bit better.
*aOutChangeHint |= nsChangeHint_RepaintFrame;
}
}