forked from mirrors/gecko-dev
25b79c7b15
ParseAttribute ideally would be const (see bug 1829138), but the SVG and SMIL code is rather messy. Still, now that BeforeSetAttr can't really fail, swapping the order of ParseAttribute and BeforeSetAttr shouldn't really change behavior. Sorry for the extra `virtual` keyword removal and such. I had to do this one by hand unlike the dependent bugs, and I went a bit drive-by, lmk if you want me to split those changes. Differential Revision: https://phabricator.services.mozilla.com/D176086
99 lines
3.6 KiB
C++
99 lines
3.6 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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{ \
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0xacbd9ea6, 0x15aa, 0x4f37, { \
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0x8c, 0xe0, 0x35, 0x1e, 0xd7, 0x21, 0xca, 0xe9 \
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} \
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}
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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_DECLARE_STATIC_IID_ACCESSOR(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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NS_DEFINE_STATIC_IID_ACCESSOR(nsStyledElement, NS_STYLED_ELEMENT_IID)
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#endif // __NS_STYLEDELEMENT_H_
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