forked from mirrors/gecko-dev
115 lines
4.5 KiB
C++
115 lines
4.5 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: MPL 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 Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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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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* Esben Mose Hansen.
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*
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* Contributor(s):
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* Esben Mose Hansen <esben@oek.dk> (original author)
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* L. David Baron <dbaron@dbaron.org>
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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 MPL, 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 MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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/* base class for nsCounterList and nsQuoteList */
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#ifndef nsGenConList_h___
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#define nsGenConList_h___
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#include "nsIFrame.h"
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#include "nsStyleStruct.h"
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#include "prclist.h"
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#include "nsIDOMCharacterData.h"
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#include "nsCSSPseudoElements.h"
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struct nsGenConNode : public PRCList {
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// The wrapper frame for all of the pseudo-element's content. This
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// frame generally has useful style data and has the
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// NS_FRAME_GENERATED_CONTENT bit set (so we use it to track removal),
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// but does not necessarily for |nsCounterChangeNode|s.
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nsIFrame* const mPseudoFrame;
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// Index within the list of things specified by the 'content' property,
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// which is needed to do 'content: open-quote open-quote' correctly,
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// and needed for similar cases for counters.
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const PRInt32 mContentIndex;
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// null for 'content:no-open-quote', 'content:no-close-quote' and for
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// counter nodes for increments and resets (rather than uses)
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nsCOMPtr<nsIDOMCharacterData> mText;
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nsGenConNode(nsIFrame* aPseudoFrame, PRInt32 aContentIndex)
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: mPseudoFrame(aPseudoFrame)
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, mContentIndex(aContentIndex)
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{
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NS_ASSERTION(aContentIndex <
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PRInt32(aPseudoFrame->GetStyleContent()->ContentCount()),
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"index out of range");
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// We allow negative values of mContentIndex for 'counter-reset' and
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// 'counter-increment'.
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NS_ASSERTION(aContentIndex < 0 ||
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aPseudoFrame->GetStyleContext()->GetPseudoType() ==
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nsCSSPseudoElements::before ||
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aPseudoFrame->GetStyleContext()->GetPseudoType() ==
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nsCSSPseudoElements::after,
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"not :before/:after generated content and not counter change");
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NS_ASSERTION(aContentIndex < 0 ||
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aPseudoFrame->GetStateBits() & NS_FRAME_GENERATED_CONTENT,
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"not generated content and not counter change");
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}
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virtual ~nsGenConNode() {} // XXX Avoid, perhaps?
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};
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class nsGenConList {
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protected:
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nsGenConNode* mFirstNode;
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PRUint32 mSize;
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public:
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nsGenConList() : mFirstNode(nsnull), mSize(0) {}
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~nsGenConList() { Clear(); }
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void Clear();
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static nsGenConNode* Next(nsGenConNode* aNode) {
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return static_cast<nsGenConNode*>(PR_NEXT_LINK(aNode));
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}
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static nsGenConNode* Prev(nsGenConNode* aNode) {
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return static_cast<nsGenConNode*>(PR_PREV_LINK(aNode));
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}
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void Insert(nsGenConNode* aNode);
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// returns whether any nodes have been destroyed
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PRBool DestroyNodesFor(nsIFrame* aFrame); //destroy all nodes with aFrame as parent
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// Return true if |aNode1| is after |aNode2|.
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static PRBool NodeAfter(const nsGenConNode* aNode1,
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const nsGenConNode* aNode2);
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void Remove(nsGenConNode* aNode) { PR_REMOVE_LINK(aNode); mSize--; }
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PRBool IsLast(nsGenConNode* aNode) { return (Next(aNode) == mFirstNode); }
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};
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#endif /* nsGenConList_h___ */
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