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-rw-r--r--dom/html/HTMLHRElement.cpp192
1 files changed, 192 insertions, 0 deletions
diff --git a/dom/html/HTMLHRElement.cpp b/dom/html/HTMLHRElement.cpp
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+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "mozilla/dom/HTMLHRElement.h"
+#include "mozilla/dom/HTMLHRElementBinding.h"
+
+#include "nsCSSProps.h"
+#include "nsStyleConsts.h"
+#include "mozilla/MappedDeclarations.h"
+
+NS_IMPL_NS_NEW_HTML_ELEMENT(HR)
+
+namespace mozilla::dom {
+
+HTMLHRElement::HTMLHRElement(
+ already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo)
+ : nsGenericHTMLElement(std::move(aNodeInfo)) {}
+
+HTMLHRElement::~HTMLHRElement() = default;
+
+NS_IMPL_ELEMENT_CLONE(HTMLHRElement)
+
+bool HTMLHRElement::ParseAttribute(int32_t aNamespaceID, nsAtom* aAttribute,
+ const nsAString& aValue,
+ nsIPrincipal* aMaybeScriptedPrincipal,
+ nsAttrValue& aResult) {
+ static const nsAttrValue::EnumTable kAlignTable[] = {
+ {"left", StyleTextAlign::Left},
+ {"right", StyleTextAlign::Right},
+ {"center", StyleTextAlign::Center},
+ {nullptr, 0}};
+
+ if (aNamespaceID == kNameSpaceID_None) {
+ if (aAttribute == nsGkAtoms::width) {
+ return aResult.ParseHTMLDimension(aValue);
+ }
+ if (aAttribute == nsGkAtoms::size) {
+ return aResult.ParseIntWithBounds(aValue, 1, 1000);
+ }
+ if (aAttribute == nsGkAtoms::align) {
+ return aResult.ParseEnumValue(aValue, kAlignTable, false);
+ }
+ if (aAttribute == nsGkAtoms::color) {
+ return aResult.ParseColor(aValue);
+ }
+ }
+
+ return nsGenericHTMLElement::ParseAttribute(aNamespaceID, aAttribute, aValue,
+ aMaybeScriptedPrincipal, aResult);
+}
+
+void HTMLHRElement::MapAttributesIntoRule(const nsMappedAttributes* aAttributes,
+ MappedDeclarations& aDecls) {
+ bool noshade = false;
+
+ const nsAttrValue* colorValue = aAttributes->GetAttr(nsGkAtoms::color);
+ nscolor color;
+ bool colorIsSet = colorValue && colorValue->GetColorValue(color);
+
+ if (colorIsSet) {
+ noshade = true;
+ } else {
+ noshade = !!aAttributes->GetAttr(nsGkAtoms::noshade);
+ }
+
+ // align: enum
+ const nsAttrValue* value = aAttributes->GetAttr(nsGkAtoms::align);
+ if (value && value->Type() == nsAttrValue::eEnum) {
+ // Map align attribute into auto side margins
+ switch (StyleTextAlign(value->GetEnumValue())) {
+ case StyleTextAlign::Left:
+ aDecls.SetPixelValueIfUnset(eCSSProperty_margin_left, 0.0f);
+ aDecls.SetAutoValueIfUnset(eCSSProperty_margin_right);
+ break;
+ case StyleTextAlign::Right:
+ aDecls.SetAutoValueIfUnset(eCSSProperty_margin_left);
+ aDecls.SetPixelValueIfUnset(eCSSProperty_margin_right, 0.0f);
+ break;
+ case StyleTextAlign::Center:
+ aDecls.SetAutoValueIfUnset(eCSSProperty_margin_left);
+ aDecls.SetAutoValueIfUnset(eCSSProperty_margin_right);
+ break;
+ default:
+ MOZ_ASSERT_UNREACHABLE("Unknown <hr align> value");
+ break;
+ }
+ }
+ if (!aDecls.PropertyIsSet(eCSSProperty_height)) {
+ // size: integer
+ if (noshade) {
+ // noshade case: size is set using the border
+ aDecls.SetAutoValue(eCSSProperty_height);
+ } else {
+ // normal case
+ // the height includes the top and bottom borders that are initially 1px.
+ // for size=1, html.css has a special case rule that makes this work by
+ // removing all but the top border.
+ const nsAttrValue* value = aAttributes->GetAttr(nsGkAtoms::size);
+ if (value && value->Type() == nsAttrValue::eInteger) {
+ aDecls.SetPixelValue(eCSSProperty_height,
+ (float)value->GetIntegerValue());
+ } // else use default value from html.css
+ }
+ }
+
+ // if not noshade, border styles are dealt with by html.css
+ if (noshade) {
+ // size: integer
+ // if a size is set, use half of it per side, otherwise, use 1px per side
+ float sizePerSide;
+ bool allSides = true;
+ value = aAttributes->GetAttr(nsGkAtoms::size);
+ if (value && value->Type() == nsAttrValue::eInteger) {
+ sizePerSide = (float)value->GetIntegerValue() / 2.0f;
+ if (sizePerSide < 1.0f) {
+ // XXX When the pixel bug is fixed, all the special casing for
+ // subpixel borders should be removed.
+ // In the meantime, this makes http://www.microsoft.com/ look right.
+ sizePerSide = 1.0f;
+ allSides = false;
+ }
+ } else {
+ sizePerSide = 1.0f; // default to a 2px high line
+ }
+ aDecls.SetPixelValueIfUnset(eCSSProperty_border_top_width, sizePerSide);
+ if (allSides) {
+ aDecls.SetPixelValueIfUnset(eCSSProperty_border_right_width, sizePerSide);
+ aDecls.SetPixelValueIfUnset(eCSSProperty_border_bottom_width,
+ sizePerSide);
+ aDecls.SetPixelValueIfUnset(eCSSProperty_border_left_width, sizePerSide);
+ }
+
+ if (!aDecls.PropertyIsSet(eCSSProperty_border_top_style))
+ aDecls.SetKeywordValue(eCSSProperty_border_top_style,
+ StyleBorderStyle::Solid);
+ if (allSides) {
+ aDecls.SetKeywordValueIfUnset(eCSSProperty_border_right_style,
+ StyleBorderStyle::Solid);
+ aDecls.SetKeywordValueIfUnset(eCSSProperty_border_bottom_style,
+ StyleBorderStyle::Solid);
+ aDecls.SetKeywordValueIfUnset(eCSSProperty_border_left_style,
+ StyleBorderStyle::Solid);
+
+ // If it would be noticeable, set the border radius to
+ // 10000px on all corners; this triggers the clamping to make
+ // circular ends. This assumes the <hr> isn't larger than
+ // that in *both* dimensions.
+ for (const nsCSSPropertyID* props =
+ nsCSSProps::SubpropertyEntryFor(eCSSProperty_border_radius);
+ *props != eCSSProperty_UNKNOWN; ++props) {
+ aDecls.SetPixelValueIfUnset(*props, 10000.0f);
+ }
+ }
+ }
+ // color: a color
+ // (we got the color attribute earlier)
+ if (colorIsSet) {
+ aDecls.SetColorValueIfUnset(eCSSProperty_color, color);
+ }
+
+ nsGenericHTMLElement::MapWidthAttributeInto(aAttributes, aDecls);
+ nsGenericHTMLElement::MapCommonAttributesInto(aAttributes, aDecls);
+}
+
+NS_IMETHODIMP_(bool)
+HTMLHRElement::IsAttributeMapped(const nsAtom* aAttribute) const {
+ static const MappedAttributeEntry attributes[] = {
+ {nsGkAtoms::align}, {nsGkAtoms::width}, {nsGkAtoms::size},
+ {nsGkAtoms::color}, {nsGkAtoms::noshade}, {nullptr},
+ };
+
+ static const MappedAttributeEntry* const map[] = {
+ attributes,
+ sCommonAttributeMap,
+ };
+
+ return FindAttributeDependence(aAttribute, map);
+}
+
+nsMapRuleToAttributesFunc HTMLHRElement::GetAttributeMappingFunction() const {
+ return &MapAttributesIntoRule;
+}
+
+JSObject* HTMLHRElement::WrapNode(JSContext* aCx,
+ JS::Handle<JSObject*> aGivenProto) {
+ return HTMLHRElement_Binding::Wrap(aCx, this, aGivenProto);
+}
+
+} // namespace mozilla::dom