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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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/. */
/**
* nsStyledElement is the base for elements supporting styling via the
* id/class/style attributes; it is a common base for their support in HTML,
* SVG and MathML.
*/
#ifndef __NS_STYLEDELEMENT_H_
#define __NS_STYLEDELEMENT_H_
#include "mozilla/Attributes.h"
#include "nsString.h"
#include "mozilla/dom/Element.h"
namespace mozilla {
class DeclarationBlock;
} // namespace mozilla
// IID for nsStyledElement interface
#define NS_STYLED_ELEMENT_IID \
{ 0xacbd9ea6, 0x15aa, 0x4f37, \
{ 0x8c, 0xe0, 0x35, 0x1e, 0xd7, 0x21, 0xca, 0xe9 } }
typedef mozilla::dom::Element nsStyledElementBase;
class nsStyledElement : public nsStyledElementBase
{
protected:
inline explicit nsStyledElement(already_AddRefed<mozilla::dom::NodeInfo>& aNodeInfo)
: nsStyledElementBase(aNodeInfo)
{}
public:
// We don't want to implement AddRef/Release because that would add an extra
// function call for those on pretty much all elements. But we do need QI, so
// we can QI to nsStyledElement.
NS_IMETHOD QueryInterface(REFNSIID aIID, void** aInstancePtr) override;
// Element interface methods
virtual mozilla::DeclarationBlock* GetInlineStyleDeclaration() override;
virtual nsresult SetInlineStyleDeclaration(mozilla::DeclarationBlock* aDeclaration,
const nsAString* aSerialized,
bool aNotify) override;
nsICSSDeclaration* Style();
NS_DECLARE_STATIC_IID_ACCESSOR(NS_STYLED_ELEMENT_IID)
protected:
nsICSSDeclaration* GetExistingStyle();
/**
* Parse a style attr value into a CSS rulestruct (or, if there is no
* document, leave it as a string) and return as nsAttrValue.
*
* @param aValue the value to parse
* @param aResult the resulting HTMLValue [OUT]
*/
void ParseStyleAttribute(const nsAString& aValue,
nsAttrValue& aResult,
bool aForceInDataDoc);
virtual bool ParseAttribute(int32_t aNamespaceID, nsIAtom* aAttribute,
const nsAString& aValue, nsAttrValue& aResult) override;
friend class mozilla::dom::Element;
/**
* Create the style struct from the style attr. Used when an element is
* first put into a document. Only has an effect if the old value is a
* string. If aForceInDataDoc is true, will reparse even if we're in a data
* document.
*/
nsresult ReparseStyleAttribute(bool aForceInDataDoc);
virtual nsresult BeforeSetAttr(int32_t aNamespaceID, nsIAtom* aName,
const nsAttrValueOrString* aValue,
bool aNotify) override;
};
NS_DEFINE_STATIC_IID_ACCESSOR(nsStyledElement, NS_STYLED_ELEMENT_IID)
#endif // __NS_STYLEDELEMENT_H_
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