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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/. */
+
+/**
+ * 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 "mozilla/dom/Element.h"
+#include "nsString.h"
+
+namespace mozilla {
+class DeclarationBlock;
+struct MutationClosureData;
+} // namespace mozilla
+
+// IID for nsStyledElement interface
+#define NS_STYLED_ELEMENT_IID \
+ { \
+ 0xacbd9ea6, 0x15aa, 0x4f37, { \
+ 0x8c, 0xe0, 0x35, 0x1e, 0xd7, 0x21, 0xca, 0xe9 \
+ } \
+ }
+
+using nsStyledElementBase = mozilla::dom::Element;
+
+class nsStyledElement : public nsStyledElementBase {
+ protected:
+ inline explicit nsStyledElement(
+ already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo)
+ : nsStyledElementBase(std::move(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 void InlineStyleDeclarationWillChange(
+ mozilla::MutationClosureData& aData) override;
+ virtual nsresult SetInlineStyleDeclaration(
+ mozilla::DeclarationBlock& aDeclaration,
+ mozilla::MutationClosureData& aData) override;
+ virtual nsresult BindToTree(BindContext& aContext, nsINode& aParent) override;
+
+ nsICSSDeclaration* Style();
+
+ NS_DECLARE_STATIC_IID_ACCESSOR(NS_STYLED_ELEMENT_IID)
+ NS_IMPL_FROMNODE_HELPER(nsStyledElement, IsStyledElement());
+
+ bool IsStyledElement() const final { return true; }
+
+ 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 aMaybeScriptedPrincipal if available, the scripted principal
+ * responsible for this attribute value, as passed to
+ * Element::ParseAttribute.
+ * @param aResult the resulting HTMLValue [OUT]
+ */
+ void ParseStyleAttribute(const nsAString& aValue,
+ nsIPrincipal* aMaybeScriptedPrincipal,
+ nsAttrValue& aResult, bool aForceInDataDoc);
+
+ bool ParseAttribute(int32_t aNamespaceID, nsAtom* aAttribute,
+ const nsAString& aValue,
+ nsIPrincipal* aMaybeScriptedPrincipal,
+ 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);
+
+ void BeforeSetAttr(int32_t aNamespaceID, nsAtom* aName,
+ const nsAttrValue* aValue, bool aNotify) override;
+};
+
+NS_DEFINE_STATIC_IID_ACCESSOR(nsStyledElement, NS_STYLED_ELEMENT_IID)
+#endif // __NS_STYLEDELEMENT_H_