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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/MappedDeclarationsBuilder.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(MappedDeclarationsBuilder& aBuilder) {
bool noshade = false;
const nsAttrValue* colorValue = aBuilder.GetAttr(nsGkAtoms::color);
nscolor color;
bool colorIsSet = colorValue && colorValue->GetColorValue(color);
if (colorIsSet) {
noshade = true;
} else {
noshade = !!aBuilder.GetAttr(nsGkAtoms::noshade);
}
// align: enum
const nsAttrValue* value = aBuilder.GetAttr(nsGkAtoms::align);
if (value && value->Type() == nsAttrValue::eEnum) {
// Map align attribute into auto side margins
switch (StyleTextAlign(value->GetEnumValue())) {
case StyleTextAlign::Left:
aBuilder.SetPixelValueIfUnset(eCSSProperty_margin_left, 0.0f);
aBuilder.SetAutoValueIfUnset(eCSSProperty_margin_right);
break;
case StyleTextAlign::Right:
aBuilder.SetAutoValueIfUnset(eCSSProperty_margin_left);
aBuilder.SetPixelValueIfUnset(eCSSProperty_margin_right, 0.0f);
break;
case StyleTextAlign::Center:
aBuilder.SetAutoValueIfUnset(eCSSProperty_margin_left);
aBuilder.SetAutoValueIfUnset(eCSSProperty_margin_right);
break;
default:
MOZ_ASSERT_UNREACHABLE("Unknown <hr align> value");
break;
}
}
if (!aBuilder.PropertyIsSet(eCSSProperty_height)) {
// size: integer
if (noshade) {
// noshade case: size is set using the border
aBuilder.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 = aBuilder.GetAttr(nsGkAtoms::size);
if (value && value->Type() == nsAttrValue::eInteger) {
aBuilder.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 = aBuilder.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
}
aBuilder.SetPixelValueIfUnset(eCSSProperty_border_top_width, sizePerSide);
if (allSides) {
aBuilder.SetPixelValueIfUnset(eCSSProperty_border_right_width,
sizePerSide);
aBuilder.SetPixelValueIfUnset(eCSSProperty_border_bottom_width,
sizePerSide);
aBuilder.SetPixelValueIfUnset(eCSSProperty_border_left_width,
sizePerSide);
}
if (!aBuilder.PropertyIsSet(eCSSProperty_border_top_style)) {
aBuilder.SetKeywordValue(eCSSProperty_border_top_style,
StyleBorderStyle::Solid);
}
if (allSides) {
aBuilder.SetKeywordValueIfUnset(eCSSProperty_border_right_style,
StyleBorderStyle::Solid);
aBuilder.SetKeywordValueIfUnset(eCSSProperty_border_bottom_style,
StyleBorderStyle::Solid);
aBuilder.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) {
aBuilder.SetPixelValueIfUnset(*props, 10000.0f);
}
}
}
// color: a color
// (we got the color attribute earlier)
if (colorIsSet) {
aBuilder.SetColorValueIfUnset(eCSSProperty_color, color);
}
MapWidthAttributeInto(aBuilder);
MapCommonAttributesInto(aBuilder);
}
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
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