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lightning-sunbird  0.9+nobinonly
nsCSSKeywords.cpp
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00001 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
00002 /* ***** BEGIN LICENSE BLOCK *****
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00015  * The Original Code is mozilla.org code.
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00017  * The Initial Developer of the Original Code is
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00024  * Alternatively, the contents of this file may be used under the terms of
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00037 
00038 #include "nsCSSKeywords.h"
00039 #include "nsString.h"
00040 #include "nsStaticNameTable.h"
00041 #include "nsReadableUtils.h"
00042 
00043 // required to make the symbol external, so that TestCSSPropertyLookup.cpp can link with it
00044 extern const char* const kCSSRawKeywords[];
00045 
00046 // define an array of all CSS keywords
00047 #define CSS_KEY(_name,_id) #_name,
00048 const char* const kCSSRawKeywords[] = {
00049 #include "nsCSSKeywordList.h"
00050 };
00051 #undef CSS_KEY
00052 
00053 static PRInt32 gTableRefCount;
00054 static nsStaticCaseInsensitiveNameTable* gKeywordTable;
00055 
00056 void
00057 nsCSSKeywords::AddRefTable(void) 
00058 {
00059   if (0 == gTableRefCount++) {
00060     NS_ASSERTION(!gKeywordTable, "pre existing array!");
00061     gKeywordTable = new nsStaticCaseInsensitiveNameTable();
00062     if (gKeywordTable) {
00063 #ifdef DEBUG
00064     {
00065       // let's verify the table...
00066       PRInt32 index = 0;
00067       for (; index < eCSSKeyword_COUNT && kCSSRawKeywords[index]; ++index) {
00068         nsCAutoString temp1(kCSSRawKeywords[index]);
00069         nsCAutoString temp2(kCSSRawKeywords[index]);
00070         ToLowerCase(temp1);
00071         NS_ASSERTION(temp1.Equals(temp2), "upper case char in table");
00072         NS_ASSERTION(-1 == temp1.FindChar('_'), "underscore char in table");
00073       }
00074       NS_ASSERTION(index == eCSSKeyword_COUNT, "kCSSRawKeywords and eCSSKeyword_COUNT are out of sync");
00075     }
00076 #endif      
00077       gKeywordTable->Init(kCSSRawKeywords, eCSSKeyword_COUNT); 
00078     }
00079   }
00080 }
00081 
00082 void
00083 nsCSSKeywords::ReleaseTable(void) 
00084 {
00085   if (0 == --gTableRefCount) {
00086     if (gKeywordTable) {
00087       delete gKeywordTable;
00088       gKeywordTable = nsnull;
00089     }
00090   }
00091 }
00092 
00093 nsCSSKeyword 
00094 nsCSSKeywords::LookupKeyword(const nsACString& aKeyword)
00095 {
00096   NS_ASSERTION(gKeywordTable, "no lookup table, needs addref");
00097   if (gKeywordTable) {
00098     return nsCSSKeyword(gKeywordTable->Lookup(aKeyword));
00099   }  
00100   return eCSSKeyword_UNKNOWN;
00101 }
00102 
00103 nsCSSKeyword 
00104 nsCSSKeywords::LookupKeyword(const nsAString& aKeyword)
00105 {
00106   NS_ASSERTION(gKeywordTable, "no lookup table, needs addref");
00107   if (gKeywordTable) {
00108     return nsCSSKeyword(gKeywordTable->Lookup(aKeyword));
00109   }  
00110   return eCSSKeyword_UNKNOWN;
00111 }
00112 
00113 const nsAFlatCString& 
00114 nsCSSKeywords::GetStringValue(nsCSSKeyword aKeyword)
00115 {
00116   NS_ASSERTION(gKeywordTable, "no lookup table, needs addref");
00117   if (gKeywordTable) {
00118     return gKeywordTable->GetStringValue(PRInt32(aKeyword));
00119   } else {
00120     static nsDependentCString kNullStr("");
00121     return kNullStr;
00122   }
00123 }
00124