1 : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2 : /* ***** BEGIN LICENSE BLOCK *****
3 : * Version: MPL 1.1/GPL 2.0/LGPL 2.1
4 : *
5 : * The contents of this file are subject to the Mozilla Public License Version
6 : * 1.1 (the "License"); you may not use this file except in compliance with
7 : * the License. You may obtain a copy of the License at
8 : * http://www.mozilla.org/MPL/
9 : *
10 : * Software distributed under the License is distributed on an "AS IS" basis,
11 : * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
12 : * for the specific language governing rights and limitations under the
13 : * License.
14 : *
15 : * The Original Code is mozilla.org code.
16 : *
17 : * The Initial Developer of the Original Code is
18 : * Esben Mose Hansen.
19 : *
20 : * Contributor(s):
21 : * Esben Mose Hansen <esben@oek.dk> (original author)
22 : * L. David Baron <dbaron@dbaron.org>
23 : *
24 : * Alternatively, the contents of this file may be used under the terms of
25 : * either the GNU General Public License Version 2 or later (the "GPL"), or
26 : * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
27 : * in which case the provisions of the GPL or the LGPL are applicable instead
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34 : * the terms of any one of the MPL, the GPL or the LGPL.
35 : *
36 : * ***** END LICENSE BLOCK ***** */
37 :
38 : /* implementation of quotes for the CSS 'content' property */
39 :
40 : #ifndef nsQuoteList_h___
41 : #define nsQuoteList_h___
42 :
43 : #include "nsGenConList.h"
44 :
45 0 : struct nsQuoteNode : public nsGenConNode {
46 : // open-quote, close-quote, no-open-quote, or no-close-quote
47 : const nsStyleContentType mType;
48 :
49 : // Quote depth before this quote, which is always non-negative.
50 : PRInt32 mDepthBefore;
51 :
52 0 : nsQuoteNode(nsStyleContentType& aType, PRUint32 aContentIndex)
53 : : nsGenConNode(aContentIndex)
54 : , mType(aType)
55 0 : , mDepthBefore(0)
56 : {
57 0 : NS_ASSERTION(aType == eStyleContentType_OpenQuote ||
58 : aType == eStyleContentType_CloseQuote ||
59 : aType == eStyleContentType_NoOpenQuote ||
60 : aType == eStyleContentType_NoCloseQuote,
61 : "incorrect type");
62 0 : NS_ASSERTION(aContentIndex <= PR_INT32_MAX, "out of range");
63 0 : }
64 :
65 : virtual bool InitTextFrame(nsGenConList* aList,
66 : nsIFrame* aPseudoFrame, nsIFrame* aTextFrame);
67 :
68 : // is this 'open-quote' or 'no-open-quote'?
69 0 : bool IsOpenQuote() {
70 : return mType == eStyleContentType_OpenQuote ||
71 0 : mType == eStyleContentType_NoOpenQuote;
72 : }
73 :
74 : // is this 'close-quote' or 'no-close-quote'?
75 : bool IsCloseQuote() {
76 : return !IsOpenQuote();
77 : }
78 :
79 : // is this 'open-quote' or 'close-quote'?
80 0 : bool IsRealQuote() {
81 : return mType == eStyleContentType_OpenQuote ||
82 0 : mType == eStyleContentType_CloseQuote;
83 : }
84 :
85 : // Depth of the quote for *this* node. Either non-negative or -1.
86 : // -1 means this is a closing quote that tried to decrement the
87 : // counter below zero (which means no quote should be rendered).
88 0 : PRInt32 Depth() {
89 0 : return IsOpenQuote() ? mDepthBefore : mDepthBefore - 1;
90 : }
91 :
92 : // always non-negative
93 0 : PRInt32 DepthAfter() {
94 0 : return IsOpenQuote() ? mDepthBefore + 1
95 0 : : (mDepthBefore == 0 ? 0 : mDepthBefore - 1);
96 : }
97 :
98 : // The text that should be displayed for this quote.
99 : const nsString* Text();
100 : };
101 :
102 0 : class nsQuoteList : public nsGenConList {
103 : private:
104 0 : nsQuoteNode* FirstNode() { return static_cast<nsQuoteNode*>(mFirstNode); }
105 : public:
106 : // assign the correct |mDepthBefore| value to a node that has been inserted
107 : // Should be called immediately after calling |Insert|.
108 : void Calc(nsQuoteNode* aNode);
109 :
110 0 : nsQuoteNode* Next(nsQuoteNode* aNode) {
111 0 : return static_cast<nsQuoteNode*>(nsGenConList::Next(aNode));
112 : }
113 0 : nsQuoteNode* Prev(nsQuoteNode* aNode) {
114 0 : return static_cast<nsQuoteNode*>(nsGenConList::Prev(aNode));
115 : }
116 :
117 : void RecalcAll();
118 : #ifdef DEBUG
119 : void PrintChain();
120 : #endif
121 : };
122 :
123 : #endif /* nsQuoteList_h___ */
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