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7bddcf9e5a
Instead, lazily schedule evaluation of them before styling, much like we were doing for SVG. A subtle tweak is that we only remain scheduled while in the document. This allows us to use the "in document" bit plus the "mapped attributes dirty" bit to know our scheduled status. It also prevents doing silly work for disconnected elements, and having to do hashmap lookups on adoption and node destruction. Differential Revision: https://phabricator.services.mozilla.com/D181549
194 lines
7.0 KiB
C++
194 lines
7.0 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "mozilla/dom/HTMLHRElement.h"
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#include "mozilla/dom/HTMLHRElementBinding.h"
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#include "nsCSSProps.h"
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#include "nsStyleConsts.h"
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#include "mozilla/MappedDeclarationsBuilder.h"
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NS_IMPL_NS_NEW_HTML_ELEMENT(HR)
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namespace mozilla::dom {
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HTMLHRElement::HTMLHRElement(
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already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo)
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: nsGenericHTMLElement(std::move(aNodeInfo)) {}
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HTMLHRElement::~HTMLHRElement() = default;
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NS_IMPL_ELEMENT_CLONE(HTMLHRElement)
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bool HTMLHRElement::ParseAttribute(int32_t aNamespaceID, nsAtom* aAttribute,
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const nsAString& aValue,
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nsIPrincipal* aMaybeScriptedPrincipal,
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nsAttrValue& aResult) {
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static const nsAttrValue::EnumTable kAlignTable[] = {
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{"left", StyleTextAlign::Left},
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{"right", StyleTextAlign::Right},
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{"center", StyleTextAlign::Center},
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{nullptr, 0}};
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if (aNamespaceID == kNameSpaceID_None) {
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if (aAttribute == nsGkAtoms::width) {
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return aResult.ParseHTMLDimension(aValue);
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}
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if (aAttribute == nsGkAtoms::size) {
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return aResult.ParseIntWithBounds(aValue, 1, 1000);
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}
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if (aAttribute == nsGkAtoms::align) {
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return aResult.ParseEnumValue(aValue, kAlignTable, false);
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}
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if (aAttribute == nsGkAtoms::color) {
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return aResult.ParseColor(aValue);
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}
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}
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return nsGenericHTMLElement::ParseAttribute(aNamespaceID, aAttribute, aValue,
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aMaybeScriptedPrincipal, aResult);
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}
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void HTMLHRElement::MapAttributesIntoRule(MappedDeclarationsBuilder& aBuilder) {
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bool noshade = false;
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const nsAttrValue* colorValue = aBuilder.GetAttr(nsGkAtoms::color);
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nscolor color;
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bool colorIsSet = colorValue && colorValue->GetColorValue(color);
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if (colorIsSet) {
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noshade = true;
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} else {
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noshade = !!aBuilder.GetAttr(nsGkAtoms::noshade);
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}
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// align: enum
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const nsAttrValue* value = aBuilder.GetAttr(nsGkAtoms::align);
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if (value && value->Type() == nsAttrValue::eEnum) {
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// Map align attribute into auto side margins
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switch (StyleTextAlign(value->GetEnumValue())) {
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case StyleTextAlign::Left:
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aBuilder.SetPixelValueIfUnset(eCSSProperty_margin_left, 0.0f);
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aBuilder.SetAutoValueIfUnset(eCSSProperty_margin_right);
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break;
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case StyleTextAlign::Right:
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aBuilder.SetAutoValueIfUnset(eCSSProperty_margin_left);
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aBuilder.SetPixelValueIfUnset(eCSSProperty_margin_right, 0.0f);
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break;
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case StyleTextAlign::Center:
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aBuilder.SetAutoValueIfUnset(eCSSProperty_margin_left);
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aBuilder.SetAutoValueIfUnset(eCSSProperty_margin_right);
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break;
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default:
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MOZ_ASSERT_UNREACHABLE("Unknown <hr align> value");
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break;
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}
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}
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if (!aBuilder.PropertyIsSet(eCSSProperty_height)) {
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// size: integer
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if (noshade) {
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// noshade case: size is set using the border
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aBuilder.SetAutoValue(eCSSProperty_height);
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} else {
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// normal case
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// the height includes the top and bottom borders that are initially 1px.
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// for size=1, html.css has a special case rule that makes this work by
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// removing all but the top border.
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const nsAttrValue* value = aBuilder.GetAttr(nsGkAtoms::size);
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if (value && value->Type() == nsAttrValue::eInteger) {
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aBuilder.SetPixelValue(eCSSProperty_height,
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(float)value->GetIntegerValue());
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} // else use default value from html.css
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}
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}
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// if not noshade, border styles are dealt with by html.css
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if (noshade) {
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// size: integer
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// if a size is set, use half of it per side, otherwise, use 1px per side
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float sizePerSide;
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bool allSides = true;
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value = aBuilder.GetAttr(nsGkAtoms::size);
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if (value && value->Type() == nsAttrValue::eInteger) {
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sizePerSide = (float)value->GetIntegerValue() / 2.0f;
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if (sizePerSide < 1.0f) {
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// XXX When the pixel bug is fixed, all the special casing for
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// subpixel borders should be removed.
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// In the meantime, this makes http://www.microsoft.com/ look right.
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sizePerSide = 1.0f;
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allSides = false;
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}
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} else {
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sizePerSide = 1.0f; // default to a 2px high line
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}
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aBuilder.SetPixelValueIfUnset(eCSSProperty_border_top_width, sizePerSide);
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if (allSides) {
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aBuilder.SetPixelValueIfUnset(eCSSProperty_border_right_width,
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sizePerSide);
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aBuilder.SetPixelValueIfUnset(eCSSProperty_border_bottom_width,
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sizePerSide);
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aBuilder.SetPixelValueIfUnset(eCSSProperty_border_left_width,
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sizePerSide);
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}
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if (!aBuilder.PropertyIsSet(eCSSProperty_border_top_style)) {
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aBuilder.SetKeywordValue(eCSSProperty_border_top_style,
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StyleBorderStyle::Solid);
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}
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if (allSides) {
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aBuilder.SetKeywordValueIfUnset(eCSSProperty_border_right_style,
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StyleBorderStyle::Solid);
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aBuilder.SetKeywordValueIfUnset(eCSSProperty_border_bottom_style,
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StyleBorderStyle::Solid);
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aBuilder.SetKeywordValueIfUnset(eCSSProperty_border_left_style,
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StyleBorderStyle::Solid);
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// If it would be noticeable, set the border radius to
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// 10000px on all corners; this triggers the clamping to make
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// circular ends. This assumes the <hr> isn't larger than
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// that in *both* dimensions.
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for (const nsCSSPropertyID* props =
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nsCSSProps::SubpropertyEntryFor(eCSSProperty_border_radius);
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*props != eCSSProperty_UNKNOWN; ++props) {
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aBuilder.SetPixelValueIfUnset(*props, 10000.0f);
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}
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}
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}
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// color: a color
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// (we got the color attribute earlier)
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if (colorIsSet) {
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aBuilder.SetColorValueIfUnset(eCSSProperty_color, color);
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}
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MapWidthAttributeInto(aBuilder);
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MapCommonAttributesInto(aBuilder);
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}
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NS_IMETHODIMP_(bool)
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HTMLHRElement::IsAttributeMapped(const nsAtom* aAttribute) const {
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static const MappedAttributeEntry attributes[] = {
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{nsGkAtoms::align}, {nsGkAtoms::width}, {nsGkAtoms::size},
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{nsGkAtoms::color}, {nsGkAtoms::noshade}, {nullptr},
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};
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static const MappedAttributeEntry* const map[] = {
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attributes,
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sCommonAttributeMap,
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};
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return FindAttributeDependence(aAttribute, map);
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}
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nsMapRuleToAttributesFunc HTMLHRElement::GetAttributeMappingFunction() const {
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return &MapAttributesIntoRule;
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}
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JSObject* HTMLHRElement::WrapNode(JSContext* aCx,
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JS::Handle<JSObject*> aGivenProto) {
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return HTMLHRElement_Binding::Wrap(aCx, this, aGivenProto);
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}
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} // namespace mozilla::dom
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