bf3516e81e
In modern C++, static constexpr member variables are automatically inline (aka weak) so the template trick is not needed. This also avoid duplication and reduces the amount of parsed code. No impact on generated binary (actually: smaller debuginfo, close to identical binary). Differential Revision: https://phabricator.services.mozilla.com/D247825
95 lines
3.3 KiB
C++
95 lines
3.3 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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/**
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* nsStyledElement is the base for elements supporting styling via the
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* id/class/style attributes; it is a common base for their support in HTML,
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* SVG and MathML.
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*/
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#ifndef __NS_STYLEDELEMENT_H_
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#define __NS_STYLEDELEMENT_H_
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#include "mozilla/Attributes.h"
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#include "mozilla/dom/Element.h"
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#include "nsString.h"
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namespace mozilla {
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class DeclarationBlock;
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struct MutationClosureData;
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} // namespace mozilla
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// IID for nsStyledElement interface
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#define NS_STYLED_ELEMENT_IID \
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{0xacbd9ea6, 0x15aa, 0x4f37, {0x8c, 0xe0, 0x35, 0x1e, 0xd7, 0x21, 0xca, 0xe9}}
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using nsStyledElementBase = mozilla::dom::Element;
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class nsStyledElement : public nsStyledElementBase {
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protected:
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inline explicit nsStyledElement(
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already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo)
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: nsStyledElementBase(std::move(aNodeInfo)) {}
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public:
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// We don't want to implement AddRef/Release because that would add an extra
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// function call for those on pretty much all elements. But we do need QI, so
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// we can QI to nsStyledElement.
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NS_IMETHOD QueryInterface(REFNSIID aIID, void** aInstancePtr) override;
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// Element interface methods
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virtual void InlineStyleDeclarationWillChange(
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mozilla::MutationClosureData& aData) override;
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virtual nsresult SetInlineStyleDeclaration(
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mozilla::DeclarationBlock& aDeclaration,
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mozilla::MutationClosureData& aData) override;
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virtual nsresult BindToTree(BindContext& aContext, nsINode& aParent) override;
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nsICSSDeclaration* Style();
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NS_INLINE_DECL_STATIC_IID(NS_STYLED_ELEMENT_IID)
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NS_IMPL_FROMNODE_HELPER(nsStyledElement, IsStyledElement());
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bool IsStyledElement() const final { return true; }
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protected:
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nsICSSDeclaration* GetExistingStyle();
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/**
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* Parse a style attr value into a CSS rulestruct (or, if there is no
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* document, leave it as a string) and return as nsAttrValue.
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*
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* @param aValue the value to parse
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* @param aMaybeScriptedPrincipal if available, the scripted principal
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* responsible for this attribute value, as passed to
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* Element::ParseAttribute.
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* @param aResult the resulting HTMLValue [OUT]
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*/
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void ParseStyleAttribute(const nsAString& aValue,
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nsIPrincipal* aMaybeScriptedPrincipal,
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nsAttrValue& aResult, bool aForceInDataDoc);
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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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friend class mozilla::dom::Element;
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/**
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* Create the style struct from the style attr. Used when an element is
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* first put into a document. Only has an effect if the old value is a
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* string. If aForceInDataDoc is true, will reparse even if we're in a data
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* document.
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*/
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nsresult ReparseStyleAttribute(bool aForceInDataDoc);
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void BeforeSetAttr(int32_t aNamespaceID, nsAtom* aName,
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const nsAttrValue* aValue, bool aNotify) override;
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};
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#endif // __NS_STYLEDELEMENT_H_
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