mirror of
https://github.com/mozilla/gecko-dev.git
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124 lines
4.2 KiB
C++
124 lines
4.2 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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/* implementation of quotes for the CSS 'content' property */
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#ifndef nsQuoteList_h___
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#define nsQuoteList_h___
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#include "nsGenConList.h"
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struct nsQuoteNode : public nsGenConNode {
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// open-quote, close-quote, no-open-quote, or no-close-quote
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const nsStyleContentType mType;
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// Quote depth before this quote, which is always non-negative.
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PRInt32 mDepthBefore;
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nsQuoteNode(nsStyleContentType& aType, PRUint32 aContentIndex)
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: nsGenConNode(aContentIndex)
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, mType(aType)
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, mDepthBefore(0)
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{
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NS_ASSERTION(aType == eStyleContentType_OpenQuote ||
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aType == eStyleContentType_CloseQuote ||
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aType == eStyleContentType_NoOpenQuote ||
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aType == eStyleContentType_NoCloseQuote,
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"incorrect type");
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NS_ASSERTION(aContentIndex <= PR_INT32_MAX, "out of range");
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}
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virtual PRBool InitTextFrame(nsGenConList* aList,
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nsIFrame* aPseudoFrame, nsIFrame* aTextFrame);
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// is this 'open-quote' or 'no-open-quote'?
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PRBool IsOpenQuote() {
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return mType == eStyleContentType_OpenQuote ||
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mType == eStyleContentType_NoOpenQuote;
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}
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// is this 'close-quote' or 'no-close-quote'?
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PRBool IsCloseQuote() {
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return !IsOpenQuote();
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}
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// is this 'open-quote' or 'close-quote'?
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PRBool IsRealQuote() {
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return mType == eStyleContentType_OpenQuote ||
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mType == eStyleContentType_CloseQuote;
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}
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// Depth of the quote for *this* node. Either non-negative or -1.
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// -1 means this is a closing quote that tried to decrement the
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// counter below zero (which means no quote should be rendered).
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PRInt32 Depth() {
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return IsOpenQuote() ? mDepthBefore : mDepthBefore - 1;
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}
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// always non-negative
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PRInt32 DepthAfter() {
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return IsOpenQuote() ? mDepthBefore + 1
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: (mDepthBefore == 0 ? 0 : mDepthBefore - 1);
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}
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// The text that should be displayed for this quote.
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const nsString* Text();
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};
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class nsQuoteList : public nsGenConList {
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private:
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nsQuoteNode* FirstNode() { return static_cast<nsQuoteNode*>(mFirstNode); }
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public:
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// assign the correct |mDepthBefore| value to a node that has been inserted
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// Should be called immediately after calling |Insert|.
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void Calc(nsQuoteNode* aNode);
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nsQuoteNode* Next(nsQuoteNode* aNode) {
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return static_cast<nsQuoteNode*>(nsGenConList::Next(aNode));
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}
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nsQuoteNode* Prev(nsQuoteNode* aNode) {
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return static_cast<nsQuoteNode*>(nsGenConList::Prev(aNode));
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}
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void RecalcAll();
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#ifdef DEBUG
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void PrintChain();
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#endif
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};
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#endif /* nsQuoteList_h___ */
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