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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
74 lines
2.5 KiB
C++
74 lines
2.5 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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#ifndef mozilla_dom_HTMLBRElement_h
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#define mozilla_dom_HTMLBRElement_h
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#include "mozilla/Attributes.h"
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#include "nsGenericHTMLElement.h"
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#include "nsGkAtoms.h"
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namespace mozilla::dom {
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#define BR_ELEMENT_FLAG_BIT(n_) \
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NODE_FLAG_BIT(HTML_ELEMENT_TYPE_SPECIFIC_BITS_OFFSET + (n_))
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// BR element specific bits
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enum {
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// NS_PADDING_FOR_EMPTY_EDITOR is set if the <br> element is created by
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// editor for placing caret at proper position in empty editor.
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NS_PADDING_FOR_EMPTY_EDITOR = BR_ELEMENT_FLAG_BIT(0),
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// NS_PADDING_FOR_EMPTY_LAST_LINE is set if the <br> element is created by
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// editor for placing caret at proper position for making empty last line
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// in a block or <textarea> element visible.
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NS_PADDING_FOR_EMPTY_LAST_LINE = BR_ELEMENT_FLAG_BIT(1),
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};
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ASSERT_NODE_FLAGS_SPACE(HTML_ELEMENT_TYPE_SPECIFIC_BITS_OFFSET + 2);
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class HTMLBRElement final : public nsGenericHTMLElement {
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public:
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explicit HTMLBRElement(already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo);
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NS_IMPL_FROMNODE_HTML_WITH_TAG(HTMLBRElement, br)
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bool 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) override;
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NS_IMETHOD_(bool) IsAttributeMapped(const nsAtom* aAttribute) const override;
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nsMapRuleToAttributesFunc GetAttributeMappingFunction() const override;
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nsresult Clone(dom::NodeInfo*, nsINode** aResult) const override;
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bool Clear() const { return GetBoolAttr(nsGkAtoms::clear); }
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void SetClear(const nsAString& aClear, ErrorResult& aError) {
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return SetHTMLAttr(nsGkAtoms::clear, aClear, aError);
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}
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void GetClear(DOMString& aClear) const {
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return GetHTMLAttr(nsGkAtoms::clear, aClear);
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}
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JSObject* WrapNode(JSContext* aCx,
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JS::Handle<JSObject*> aGivenProto) override;
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bool IsPaddingForEmptyEditor() const {
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return HasFlag(NS_PADDING_FOR_EMPTY_EDITOR);
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}
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bool IsPaddingForEmptyLastLine() const {
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return HasFlag(NS_PADDING_FOR_EMPTY_LAST_LINE);
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}
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private:
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virtual ~HTMLBRElement();
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static void MapAttributesIntoRule(MappedDeclarationsBuilder&);
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};
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} // namespace mozilla::dom
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#endif
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