1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/content/base/src/nsMappedAttributes.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,118 @@
1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +/*
1.10 + * A unique per-element set of attributes that is used as an
1.11 + * nsIStyleRule; used to implement presentational attributes.
1.12 + */
1.13 +
1.14 +#ifndef nsMappedAttributes_h___
1.15 +#define nsMappedAttributes_h___
1.16 +
1.17 +#include "nsAttrAndChildArray.h"
1.18 +#include "nsMappedAttributeElement.h"
1.19 +#include "nsIStyleRule.h"
1.20 +#include "mozilla/Attributes.h"
1.21 +#include "mozilla/MemoryReporting.h"
1.22 +
1.23 +class nsIAtom;
1.24 +class nsHTMLStyleSheet;
1.25 +class nsRuleWalker;
1.26 +
1.27 +class nsMappedAttributes MOZ_FINAL : public nsIStyleRule
1.28 +{
1.29 +public:
1.30 + nsMappedAttributes(nsHTMLStyleSheet* aSheet,
1.31 + nsMapRuleToAttributesFunc aMapRuleFunc);
1.32 +
1.33 + // Do not return null.
1.34 + void* operator new(size_t size, uint32_t aAttrCount = 1) CPP_THROW_NEW;
1.35 + nsMappedAttributes* Clone(bool aWillAddAttr);
1.36 +
1.37 + NS_DECL_ISUPPORTS
1.38 +
1.39 + void SetAndTakeAttr(nsIAtom* aAttrName, nsAttrValue& aValue);
1.40 + const nsAttrValue* GetAttr(nsIAtom* aAttrName) const;
1.41 + const nsAttrValue* GetAttr(const nsAString& aAttrName) const;
1.42 +
1.43 + uint32_t Count() const
1.44 + {
1.45 + return mAttrCount;
1.46 + }
1.47 +
1.48 + bool Equals(const nsMappedAttributes* aAttributes) const;
1.49 + uint32_t HashValue() const;
1.50 +
1.51 + void DropStyleSheetReference()
1.52 + {
1.53 + mSheet = nullptr;
1.54 + }
1.55 + void SetStyleSheet(nsHTMLStyleSheet* aSheet);
1.56 + nsHTMLStyleSheet* GetStyleSheet()
1.57 + {
1.58 + return mSheet;
1.59 + }
1.60 +
1.61 + const nsAttrName* NameAt(uint32_t aPos) const
1.62 + {
1.63 + NS_ASSERTION(aPos < mAttrCount, "out-of-bounds");
1.64 + return &Attrs()[aPos].mName;
1.65 + }
1.66 + const nsAttrValue* AttrAt(uint32_t aPos) const
1.67 + {
1.68 + NS_ASSERTION(aPos < mAttrCount, "out-of-bounds");
1.69 + return &Attrs()[aPos].mValue;
1.70 + }
1.71 + // Remove the attr at position aPos. The value of the attr is placed in
1.72 + // aValue; any value that was already in aValue is destroyed.
1.73 + void RemoveAttrAt(uint32_t aPos, nsAttrValue& aValue);
1.74 + const nsAttrName* GetExistingAttrNameFromQName(const nsAString& aName) const;
1.75 + int32_t IndexOfAttr(nsIAtom* aLocalName) const;
1.76 +
1.77 +
1.78 + // nsIStyleRule
1.79 + virtual void MapRuleInfoInto(nsRuleData* aRuleData) MOZ_OVERRIDE;
1.80 +#ifdef DEBUG
1.81 + virtual void List(FILE* out = stdout, int32_t aIndent = 0) const MOZ_OVERRIDE;
1.82 +#endif
1.83 +
1.84 + size_t SizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf) const;
1.85 +
1.86 +private:
1.87 + nsMappedAttributes(const nsMappedAttributes& aCopy);
1.88 + ~nsMappedAttributes();
1.89 +
1.90 + struct InternalAttr
1.91 + {
1.92 + nsAttrName mName;
1.93 + nsAttrValue mValue;
1.94 + };
1.95 +
1.96 + /**
1.97 + * Due to a compiler bug in VisualAge C++ for AIX, we need to return the
1.98 + * address of the first index into mAttrs here, instead of simply
1.99 + * returning mAttrs itself.
1.100 + *
1.101 + * See Bug 231104 for more information.
1.102 + */
1.103 + const InternalAttr* Attrs() const
1.104 + {
1.105 + return reinterpret_cast<const InternalAttr*>(&(mAttrs[0]));
1.106 + }
1.107 + InternalAttr* Attrs()
1.108 + {
1.109 + return reinterpret_cast<InternalAttr*>(&(mAttrs[0]));
1.110 + }
1.111 +
1.112 + uint16_t mAttrCount;
1.113 +#ifdef DEBUG
1.114 + uint16_t mBufferSize;
1.115 +#endif
1.116 + nsHTMLStyleSheet* mSheet; //weak
1.117 + nsMapRuleToAttributesFunc mRuleMapper;
1.118 + void* mAttrs[1];
1.119 +};
1.120 +
1.121 +#endif /* nsMappedAttributes_h___ */
