4256d59c55
r=heikki sr=jst a=roc+moz git-svn-id: svn://10.0.0.236/trunk@117531 18797224-902f-48f8-a5cc-f745e15eee43
286 lines
9.4 KiB
C++
286 lines
9.4 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: NPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.1 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the NPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the NPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef nsIHTMLAttributes_h___
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#define nsIHTMLAttributes_h___
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#include "nsISupports.h"
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#include "nsHTMLValue.h"
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#include "nsIHTMLContent.h"
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#include "nsINodeInfo.h"
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class nsIAtom;
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class nsISupportsArray;
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class nsIHTMLStyleSheet;
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class nsRuleWalker;
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struct HTMLAttribute;
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class nsHTMLMappedAttributes;
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// IID for the nsIHTMLMappedAttributes interface {0fdd27a0-2e7b-11d3-8060-006008159b5a}
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#define NS_IHTML_MAPPED_ATTRIBUTES_IID \
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{0x0fdd27a0, 0x2e7b, 0x11d3, \
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{0x80, 0x60, 0x00, 0x60, 0x08, 0x15, 0x9b, 0x5a}}
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class nsIHTMLMappedAttributes : public nsISupports
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{
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public:
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NS_DEFINE_STATIC_IID_ACCESSOR(NS_IHTML_MAPPED_ATTRIBUTES_IID);
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NS_IMETHOD GetAttribute(nsIAtom* aAttrName, nsHTMLValue& aValue) const = 0;
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NS_IMETHOD GetAttribute(nsIAtom* aAttrName, const nsHTMLValue** aValue) const = 0;
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NS_IMETHOD GetAttributeCount(PRInt32& aCount) const = 0;
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NS_IMETHOD Equals(const nsIHTMLMappedAttributes* aAttributes, PRBool& aResult) const = 0;
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NS_IMETHOD HashValue(PRUint32& aValue) const = 0;
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// Sheet accessors for unique table management
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NS_IMETHOD SetUniqued(PRBool aUniqued) = 0;
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NS_IMETHOD GetUniqued(PRBool& aUniqued) = 0;
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NS_IMETHOD DropStyleSheetReference(void) = 0;
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#ifdef DEBUG
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virtual void SizeOf(nsISizeOfHandler* aSizer, PRUint32 &aResult) = 0;
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#endif
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};
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const PRInt32 kHTMLAttrNameBufferSize = 4;
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struct nsHTMLClassList {
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nsHTMLClassList(nsIAtom* aAtom)
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: mAtom(aAtom), // take ref
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mNext(nsnull)
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{
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MOZ_COUNT_CTOR(nsHTMLClassList);
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}
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nsHTMLClassList(const nsHTMLClassList& aCopy)
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: mAtom(aCopy.mAtom),
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mNext(nsnull)
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{
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MOZ_COUNT_CTOR(nsHTMLClassList);
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NS_IF_ADDREF(mAtom);
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if (aCopy.mNext) {
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mNext = new nsHTMLClassList(*(aCopy.mNext));
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}
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}
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~nsHTMLClassList(void)
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{
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MOZ_COUNT_DTOR(nsHTMLClassList);
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Reset();
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}
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void Reset(void)
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{
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NS_IF_RELEASE(mAtom);
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if (mNext) {
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delete mNext;
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mNext = nsnull;
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}
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}
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nsIAtom* mAtom;
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nsHTMLClassList* mNext;
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};
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/*
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* union that represents an atom or a nsINodeInfo. It is used to save cycles
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* for the common case when an attribute is not in a namespace, and therefore
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* can't have a prefix. In that case we only store the attribute name and
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* don't spend cycles looking up the right nsINodeInfo in the nodeinfo-hash.
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* The union handles NO refcounting automatically, the client has to call
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* Addref and Release manually.
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*/
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#define NS_ATTRNAME_NODEINFO_BIT 0x01
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union nsHTMLAttrName {
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nsHTMLAttrName()
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{
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}
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nsHTMLAttrName(nsIAtom* aAtom) : mAtom(aAtom)
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{
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NS_ASSERTION(aAtom, "null atom-name in nsHTMLAttrName");
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}
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nsHTMLAttrName(nsINodeInfo* aNodeInfo) : mNodeInfo(aNodeInfo)
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{
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NS_ASSERTION(aNodeInfo, "null nodeinfo-name in nsHTMLAttrName");
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mBits |= NS_ATTRNAME_NODEINFO_BIT;
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}
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PRBool IsAtom() const
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{
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return !(mBits & NS_ATTRNAME_NODEINFO_BIT);
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}
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nsINodeInfo* GetNodeInfo() const
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{
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NS_ASSERTION(!IsAtom(), "getting NodeInfo-value of atom-name");
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return (nsINodeInfo*)(mBits & ~NS_ATTRNAME_NODEINFO_BIT);
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}
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void SetNodeInfo(nsINodeInfo* aNodeInfo)
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{
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NS_ASSERTION(aNodeInfo, "null nodeinfo-name in nsHTMLAttrName");
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mNodeInfo = aNodeInfo;
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mBits |= NS_ATTRNAME_NODEINFO_BIT;
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}
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void Addref()
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{
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// Since both nsINodeInfo and nsIAtom inherits nsISupports as it's first
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// interface we can safly assume that it's first in the vtable
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nsISupports* name = NS_REINTERPRET_CAST(nsISupports *,
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mBits & ~NS_ATTRNAME_NODEINFO_BIT);
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NS_IF_ADDREF(name);
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}
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void Release()
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{
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// Since both nsINodeInfo and nsIAtom inherits nsISupports as it's first
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// interface we can safly assume that it's first in the vtable
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nsISupports* name = NS_REINTERPRET_CAST(nsISupports *,
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mBits & ~NS_ATTRNAME_NODEINFO_BIT);
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NS_IF_RELEASE(name);
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mBits = 0;
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}
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nsIAtom* mAtom; // Used if !(mBits & NS_ATTRNAME_NODEINFO_BIT)
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nsINodeInfo* mNodeInfo; // Used if (mBits & NS_ATTRNAME_NODEINFO_BIT)
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PRWord mBits;
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};
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class nsHTMLAttributes {
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public:
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nsHTMLAttributes(void);
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nsHTMLAttributes(const nsHTMLAttributes& aCopy);
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~nsHTMLAttributes(void);
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NS_METHOD SetAttributeFor(nsIAtom* aAttrName, const nsHTMLValue& aValue,
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PRBool aMappedToStyle,
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nsIHTMLContent* aContent,
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nsIHTMLStyleSheet* aSheet,
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PRInt32& aAttrCount);
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NS_METHOD SetAttributeFor(nsIAtom* aAttrName, const nsAString& aValue,
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PRBool aMappedToStyle,
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nsIHTMLContent* aContent,
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nsIHTMLStyleSheet* aSheet);
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NS_METHOD UnsetAttributeFor(nsIAtom* aAttrName,
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PRInt32 aNamespaceID,
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nsIHTMLContent* aContent,
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nsIHTMLStyleSheet* aSheet,
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PRInt32& aAttrCount);
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NS_METHOD GetAttribute(nsIAtom* aAttrName,
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nsHTMLValue& aValue) const;
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NS_METHOD GetAttribute(nsIAtom* aAttribute,
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const nsHTMLValue** aValue) const;
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NS_METHOD_(PRBool) HasAttribute(nsIAtom* aAttrName,
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PRInt32 aNamespaceID) const;
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// Namespace-able methods. The namespace must NOT be null
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NS_METHOD SetAttributeFor(nsINodeInfo* aAttrName,
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const nsAString& aValue);
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NS_METHOD GetAttribute(nsIAtom* aAttrName, PRInt32 aNamespaceID,
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nsIAtom*& aPrefix,
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const nsHTMLValue** aValue) const;
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NS_METHOD GetAttributeNameAt(PRInt32 aIndex,
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PRInt32& aNamespaceID,
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nsIAtom*& aName,
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nsIAtom*& aPrefix) const;
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NS_METHOD GetAttributeCount(PRInt32& aCount) const;
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NS_METHOD GetID(nsIAtom*& aResult) const;
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NS_METHOD GetClasses(nsVoidArray& aArray) const;
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NS_METHOD HasClass(nsIAtom* aClass, PRBool aCaseSensitive) const;
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NS_METHOD Clone(nsHTMLAttributes** aInstancePtrResult) const;
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NS_METHOD SetStyleSheet(nsIHTMLStyleSheet* aSheet);
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NS_METHOD WalkMappedAttributeStyleRules(nsRuleWalker* aRuleWalker) const;
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#ifdef UNIQUE_ATTR_SUPPORT
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NS_METHOD AddContentRef(void);
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NS_METHOD ReleaseContentRef(void);
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NS_METHOD GetContentRefCount(PRInt32& aCount) const;
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#endif
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NS_METHOD Reset(void);
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#ifdef DEBUG
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NS_METHOD List(FILE* out = stdout, PRInt32 aIndent = 0) const;
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void SizeOf(nsISizeOfHandler* aSizer, PRUint32 &aResult);
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#endif
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protected:
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nsresult SetAttributeName(nsHTMLAttrName aAttrName, PRBool& aFound);
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nsresult UnsetAttributeName(nsIAtom* aAttrName, PRBool& aFound);
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nsresult UnsetAttributeName(nsIAtom* aAttrName, PRInt32 aNamespaceID,
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PRBool& aFound);
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nsresult EnsureSingleMappedFor(nsIHTMLContent* aContent,
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nsIHTMLStyleSheet* aSheet,
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PRBool aCreate);
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nsresult UniqueMapped(nsIHTMLStyleSheet* aSheet);
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private:
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nsHTMLAttributes& operator=(const nsHTMLAttributes& aCopy);
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PRBool operator==(const nsHTMLAttributes& aCopy) const;
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protected:
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nsHTMLAttrName* mAttrNames;
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PRInt32 mAttrCount;
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PRInt32 mAttrSize;
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HTMLAttribute* mFirstUnmapped;
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nsHTMLMappedAttributes* mMapped;
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nsIAtom* mID;
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nsHTMLClassList mFirstClass;
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nsHTMLAttrName mNameBuffer[kHTMLAttrNameBufferSize];
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};
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nsresult
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NS_NewHTMLAttributes(nsHTMLAttributes** aInstancePtrResult);
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#endif /* nsIHTMLAttributes_h___ */
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