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-rw-r--r--dom/base/nsMappedAttributes.h121
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diff --git a/dom/base/nsMappedAttributes.h b/dom/base/nsMappedAttributes.h
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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/. */
+
+/*
+ * A unique per-element set of attributes that is used as an
+ * nsIStyleRule; used to implement presentational attributes.
+ */
+
+#ifndef nsMappedAttributes_h___
+#define nsMappedAttributes_h___
+
+#include "nsAttrAndChildArray.h"
+#include "nsMappedAttributeElement.h"
+#include "nsIStyleRule.h"
+#include "mozilla/Attributes.h"
+#include "mozilla/MemoryReporting.h"
+
+class nsIAtom;
+class nsHTMLStyleSheet;
+
+class nsMappedAttributes final : public nsIStyleRule
+{
+public:
+ nsMappedAttributes(nsHTMLStyleSheet* aSheet,
+ nsMapRuleToAttributesFunc aMapRuleFunc);
+
+ // Do not return null.
+ void* operator new(size_t size, uint32_t aAttrCount = 1) CPP_THROW_NEW;
+ nsMappedAttributes* Clone(bool aWillAddAttr);
+
+ NS_DECL_ISUPPORTS
+
+ void SetAndTakeAttr(nsIAtom* aAttrName, nsAttrValue& aValue);
+ const nsAttrValue* GetAttr(nsIAtom* aAttrName) const;
+ const nsAttrValue* GetAttr(const nsAString& aAttrName) const;
+
+ uint32_t Count() const
+ {
+ return mAttrCount;
+ }
+
+ bool Equals(const nsMappedAttributes* aAttributes) const;
+ uint32_t HashValue() const;
+
+ void DropStyleSheetReference()
+ {
+ mSheet = nullptr;
+ }
+ void SetStyleSheet(nsHTMLStyleSheet* aSheet);
+ nsHTMLStyleSheet* GetStyleSheet()
+ {
+ return mSheet;
+ }
+
+ const nsAttrName* NameAt(uint32_t aPos) const
+ {
+ NS_ASSERTION(aPos < mAttrCount, "out-of-bounds");
+ return &Attrs()[aPos].mName;
+ }
+ const nsAttrValue* AttrAt(uint32_t aPos) const
+ {
+ NS_ASSERTION(aPos < mAttrCount, "out-of-bounds");
+ return &Attrs()[aPos].mValue;
+ }
+ // Remove the attr at position aPos. The value of the attr is placed in
+ // aValue; any value that was already in aValue is destroyed.
+ void RemoveAttrAt(uint32_t aPos, nsAttrValue& aValue);
+ const nsAttrName* GetExistingAttrNameFromQName(const nsAString& aName) const;
+ int32_t IndexOfAttr(nsIAtom* aLocalName) const;
+
+
+ // nsIStyleRule
+ virtual void MapRuleInfoInto(nsRuleData* aRuleData) override;
+ virtual bool MightMapInheritedStyleData() override;
+ virtual bool GetDiscretelyAnimatedCSSValue(nsCSSPropertyID aProperty,
+ nsCSSValue* aValue) override;
+#ifdef DEBUG
+ virtual void List(FILE* out = stdout, int32_t aIndent = 0) const override;
+#endif
+
+ size_t SizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf) const;
+
+private:
+ nsMappedAttributes(const nsMappedAttributes& aCopy);
+ ~nsMappedAttributes();
+
+ struct InternalAttr
+ {
+ nsAttrName mName;
+ nsAttrValue mValue;
+ };
+
+ /**
+ * Due to a compiler bug in VisualAge C++ for AIX, we need to return the
+ * address of the first index into mAttrs here, instead of simply
+ * returning mAttrs itself.
+ *
+ * See Bug 231104 for more information.
+ */
+ const InternalAttr* Attrs() const
+ {
+ return reinterpret_cast<const InternalAttr*>(&(mAttrs[0]));
+ }
+ InternalAttr* Attrs()
+ {
+ return reinterpret_cast<InternalAttr*>(&(mAttrs[0]));
+ }
+
+ uint16_t mAttrCount;
+#ifdef DEBUG
+ uint16_t mBufferSize;
+#endif
+ nsHTMLStyleSheet* mSheet; //weak
+ nsMapRuleToAttributesFunc mRuleMapper;
+ void* mAttrs[1];
+};
+
+#endif /* nsMappedAttributes_h___ */