зеркало из https://github.com/mozilla/gecko-dev.git
2118 строки
64 KiB
C++
2118 строки
64 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
|
|
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
#include "CounterStyleManager.h"
|
|
|
|
#include "mozilla/ArenaObjectID.h"
|
|
#include "mozilla/ArrayUtils.h"
|
|
#include "mozilla/CheckedInt.h"
|
|
#include "mozilla/MathAlgorithms.h"
|
|
#include "mozilla/Types.h"
|
|
#include "mozilla/WritingModes.h"
|
|
#include "nsCSSRules.h"
|
|
#include "nsString.h"
|
|
#include "nsStyleSet.h"
|
|
#include "nsTArray.h"
|
|
#include "nsTHashtable.h"
|
|
#include "nsUnicodeProperties.h"
|
|
#include "mozilla/StyleSetHandle.h"
|
|
#include "mozilla/StyleSetHandleInlines.h"
|
|
|
|
namespace mozilla {
|
|
|
|
struct AdditiveSymbol
|
|
{
|
|
CounterValue weight;
|
|
nsString symbol;
|
|
};
|
|
|
|
struct NegativeType
|
|
{
|
|
nsString before, after;
|
|
};
|
|
|
|
struct PadType
|
|
{
|
|
int32_t width;
|
|
nsString symbol;
|
|
};
|
|
|
|
// This limitation will be applied to some systems, and pad descriptor.
|
|
// Any initial representation generated by symbolic or additive which is
|
|
// longer than this limitation will be dropped. If any pad is longer
|
|
// than this, the whole counter text will be dropped as well.
|
|
// The spec requires user agents to support at least 60 Unicode code-
|
|
// points for counter text. However, this constant only limits the
|
|
// length in 16-bit units. So it has to be at least 120, since code-
|
|
// points outside the BMP will need 2 16-bit units.
|
|
#define LENGTH_LIMIT 150
|
|
|
|
static bool
|
|
GetCyclicCounterText(CounterValue aOrdinal,
|
|
nsSubstring& aResult,
|
|
const nsTArray<nsString>& aSymbols)
|
|
{
|
|
MOZ_ASSERT(aSymbols.Length() >= 1,
|
|
"No symbol available for cyclic counter.");
|
|
auto n = aSymbols.Length();
|
|
CounterValue index = (aOrdinal - 1) % n;
|
|
aResult = aSymbols[index >= 0 ? index : index + n];
|
|
return true;
|
|
}
|
|
|
|
static bool
|
|
GetFixedCounterText(CounterValue aOrdinal,
|
|
nsSubstring& aResult,
|
|
CounterValue aStart,
|
|
const nsTArray<nsString>& aSymbols)
|
|
{
|
|
CounterValue index = aOrdinal - aStart;
|
|
if (index >= 0 && index < CounterValue(aSymbols.Length())) {
|
|
aResult = aSymbols[index];
|
|
return true;
|
|
} else {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
static bool
|
|
GetSymbolicCounterText(CounterValue aOrdinal,
|
|
nsSubstring& aResult,
|
|
const nsTArray<nsString>& aSymbols)
|
|
{
|
|
MOZ_ASSERT(aSymbols.Length() >= 1,
|
|
"No symbol available for symbolic counter.");
|
|
MOZ_ASSERT(aOrdinal >= 0, "Invalid ordinal.");
|
|
if (aOrdinal == 0) {
|
|
return false;
|
|
}
|
|
|
|
aResult.Truncate();
|
|
auto n = aSymbols.Length();
|
|
const nsString& symbol = aSymbols[(aOrdinal - 1) % n];
|
|
size_t len = (aOrdinal + n - 1) / n;
|
|
auto symbolLength = symbol.Length();
|
|
if (symbolLength > 0) {
|
|
if (len > LENGTH_LIMIT || symbolLength > LENGTH_LIMIT ||
|
|
len * symbolLength > LENGTH_LIMIT) {
|
|
return false;
|
|
}
|
|
for (size_t i = 0; i < len; ++i) {
|
|
aResult.Append(symbol);
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
static bool
|
|
GetAlphabeticCounterText(CounterValue aOrdinal,
|
|
nsSubstring& aResult,
|
|
const nsTArray<nsString>& aSymbols)
|
|
{
|
|
MOZ_ASSERT(aSymbols.Length() >= 2,
|
|
"Too few symbols for alphabetic counter.");
|
|
MOZ_ASSERT(aOrdinal >= 0, "Invalid ordinal.");
|
|
if (aOrdinal == 0) {
|
|
return false;
|
|
}
|
|
|
|
auto n = aSymbols.Length();
|
|
// The precise length of this array should be
|
|
// ceil(log((double) aOrdinal / n * (n - 1) + 1) / log(n)).
|
|
// The max length is slightly smaller than which defined below.
|
|
AutoTArray<int32_t, std::numeric_limits<CounterValue>::digits> indexes;
|
|
while (aOrdinal > 0) {
|
|
--aOrdinal;
|
|
indexes.AppendElement(aOrdinal % n);
|
|
aOrdinal /= n;
|
|
}
|
|
|
|
aResult.Truncate();
|
|
for (auto i = indexes.Length(); i > 0; --i) {
|
|
aResult.Append(aSymbols[indexes[i - 1]]);
|
|
}
|
|
return true;
|
|
}
|
|
|
|
static bool
|
|
GetNumericCounterText(CounterValue aOrdinal,
|
|
nsSubstring& aResult,
|
|
const nsTArray<nsString>& aSymbols)
|
|
{
|
|
MOZ_ASSERT(aSymbols.Length() >= 2,
|
|
"Too few symbols for numeric counter.");
|
|
MOZ_ASSERT(aOrdinal >= 0, "Invalid ordinal.");
|
|
|
|
if (aOrdinal == 0) {
|
|
aResult = aSymbols[0];
|
|
return true;
|
|
}
|
|
|
|
auto n = aSymbols.Length();
|
|
AutoTArray<int32_t, std::numeric_limits<CounterValue>::digits> indexes;
|
|
while (aOrdinal > 0) {
|
|
indexes.AppendElement(aOrdinal % n);
|
|
aOrdinal /= n;
|
|
}
|
|
|
|
aResult.Truncate();
|
|
for (auto i = indexes.Length(); i > 0; --i) {
|
|
aResult.Append(aSymbols[indexes[i - 1]]);
|
|
}
|
|
return true;
|
|
}
|
|
|
|
static bool
|
|
GetAdditiveCounterText(CounterValue aOrdinal,
|
|
nsSubstring& aResult,
|
|
const nsTArray<AdditiveSymbol>& aSymbols)
|
|
{
|
|
MOZ_ASSERT(aOrdinal >= 0, "Invalid ordinal.");
|
|
|
|
if (aOrdinal == 0) {
|
|
const AdditiveSymbol& last = aSymbols.LastElement();
|
|
if (last.weight == 0) {
|
|
aResult = last.symbol;
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
aResult.Truncate();
|
|
size_t length = 0;
|
|
for (size_t i = 0, iEnd = aSymbols.Length(); i < iEnd; ++i) {
|
|
const AdditiveSymbol& symbol = aSymbols[i];
|
|
if (symbol.weight == 0) {
|
|
break;
|
|
}
|
|
CounterValue times = aOrdinal / symbol.weight;
|
|
if (times > 0) {
|
|
auto symbolLength = symbol.symbol.Length();
|
|
if (symbolLength > 0) {
|
|
length += times * symbolLength;
|
|
if (times > LENGTH_LIMIT ||
|
|
symbolLength > LENGTH_LIMIT ||
|
|
length > LENGTH_LIMIT) {
|
|
return false;
|
|
}
|
|
for (CounterValue j = 0; j < times; ++j) {
|
|
aResult.Append(symbol.symbol);
|
|
}
|
|
}
|
|
aOrdinal -= times * symbol.weight;
|
|
}
|
|
}
|
|
return aOrdinal == 0;
|
|
}
|
|
|
|
static bool
|
|
DecimalToText(CounterValue aOrdinal, nsSubstring& aResult)
|
|
{
|
|
aResult.AppendInt(aOrdinal);
|
|
return true;
|
|
}
|
|
|
|
// We know cjk-ideographic need 31 characters to display 99,999,999,999,999,999
|
|
// georgian needs 6 at most
|
|
// armenian needs 12 at most
|
|
// hebrew may need more...
|
|
|
|
#define NUM_BUF_SIZE 34
|
|
|
|
enum CJKIdeographicLang {
|
|
CHINESE, KOREAN, JAPANESE
|
|
};
|
|
struct CJKIdeographicData {
|
|
char16_t digit[10];
|
|
char16_t unit[3];
|
|
char16_t unit10K[2];
|
|
uint8_t lang;
|
|
bool informal;
|
|
};
|
|
static const CJKIdeographicData gDataJapaneseInformal = {
|
|
{ // digit
|
|
0x3007, 0x4e00, 0x4e8c, 0x4e09, 0x56db,
|
|
0x4e94, 0x516d, 0x4e03, 0x516b, 0x4e5d
|
|
},
|
|
{ 0x5341, 0x767e, 0x5343 }, // unit
|
|
{ 0x4e07, 0x5104 }, // unit10K
|
|
JAPANESE, // lang
|
|
true // informal
|
|
};
|
|
static const CJKIdeographicData gDataJapaneseFormal = {
|
|
{ // digit
|
|
0x96f6, 0x58f1, 0x5f10, 0x53c2, 0x56db,
|
|
0x4f0d, 0x516d, 0x4e03, 0x516b, 0x4e5d
|
|
},
|
|
{ 0x62fe, 0x767e, 0x9621 }, // unit
|
|
{ 0x842c, 0x5104 }, // unit10K
|
|
JAPANESE, // lang
|
|
false // informal
|
|
};
|
|
static const CJKIdeographicData gDataKoreanHangulFormal = {
|
|
{ // digit
|
|
0xc601, 0xc77c, 0xc774, 0xc0bc, 0xc0ac,
|
|
0xc624, 0xc721, 0xce60, 0xd314, 0xad6c
|
|
},
|
|
{ 0xc2ed, 0xbc31, 0xcc9c }, // unit
|
|
{ 0xb9cc, 0xc5b5 }, // unit10K
|
|
KOREAN, // lang
|
|
false // informal
|
|
};
|
|
static const CJKIdeographicData gDataKoreanHanjaInformal = {
|
|
{ // digit
|
|
0x96f6, 0x4e00, 0x4e8c, 0x4e09, 0x56db,
|
|
0x4e94, 0x516d, 0x4e03, 0x516b, 0x4e5d
|
|
},
|
|
{ 0x5341, 0x767e, 0x5343 }, // unit
|
|
{ 0x842c, 0x5104 }, // unit10K
|
|
KOREAN, // lang
|
|
true // informal
|
|
};
|
|
static const CJKIdeographicData gDataKoreanHanjaFormal = {
|
|
{ // digit
|
|
0x96f6, 0x58f9, 0x8cb3, 0x53c3, 0x56db,
|
|
0x4e94, 0x516d, 0x4e03, 0x516b, 0x4e5d
|
|
},
|
|
{ 0x62fe, 0x767e, 0x4edf }, // unit
|
|
{ 0x842c, 0x5104 }, // unit10K
|
|
KOREAN, // lang
|
|
false // informal
|
|
};
|
|
static const CJKIdeographicData gDataSimpChineseInformal = {
|
|
{ // digit
|
|
0x96f6, 0x4e00, 0x4e8c, 0x4e09, 0x56db,
|
|
0x4e94, 0x516d, 0x4e03, 0x516b, 0x4e5d
|
|
},
|
|
{ 0x5341, 0x767e, 0x5343 }, // unit
|
|
{ 0x4e07, 0x4ebf }, // unit10K
|
|
CHINESE, // lang
|
|
true // informal
|
|
};
|
|
static const CJKIdeographicData gDataSimpChineseFormal = {
|
|
{ // digit
|
|
0x96f6, 0x58f9, 0x8d30, 0x53c1, 0x8086,
|
|
0x4f0d, 0x9646, 0x67d2, 0x634c, 0x7396
|
|
},
|
|
{ 0x62fe, 0x4f70, 0x4edf }, // unit
|
|
{ 0x4e07, 0x4ebf }, // unit10K
|
|
CHINESE, // lang
|
|
false // informal
|
|
};
|
|
static const CJKIdeographicData gDataTradChineseInformal = {
|
|
{ // digit
|
|
0x96f6, 0x4e00, 0x4e8c, 0x4e09, 0x56db,
|
|
0x4e94, 0x516d, 0x4e03, 0x516b, 0x4e5d
|
|
},
|
|
{ 0x5341, 0x767e, 0x5343 }, // unit
|
|
{ 0x842c, 0x5104 }, // unit10K
|
|
CHINESE, // lang
|
|
true // informal
|
|
};
|
|
static const CJKIdeographicData gDataTradChineseFormal = {
|
|
{ // digit
|
|
0x96f6, 0x58f9, 0x8cb3, 0x53c3, 0x8086,
|
|
0x4f0d, 0x9678, 0x67d2, 0x634c, 0x7396
|
|
},
|
|
{ 0x62fe, 0x4f70, 0x4edf }, // unit
|
|
{ 0x842c, 0x5104 }, // unit10K
|
|
CHINESE, // lang
|
|
false // informal
|
|
};
|
|
|
|
static bool
|
|
CJKIdeographicToText(CounterValue aOrdinal, nsSubstring& aResult,
|
|
const CJKIdeographicData& data)
|
|
{
|
|
NS_ASSERTION(aOrdinal >= 0, "Only accept non-negative ordinal");
|
|
char16_t buf[NUM_BUF_SIZE];
|
|
int32_t idx = NUM_BUF_SIZE;
|
|
int32_t pos = 0;
|
|
bool needZero = (aOrdinal == 0);
|
|
int32_t unitidx = 0, unit10Kidx = 0;
|
|
do {
|
|
unitidx = pos % 4;
|
|
if (unitidx == 0) {
|
|
unit10Kidx = pos / 4;
|
|
}
|
|
auto cur = static_cast<MakeUnsigned<CounterValue>::Type>(aOrdinal) % 10;
|
|
if (cur == 0) {
|
|
if (needZero) {
|
|
needZero = false;
|
|
buf[--idx] = data.digit[0];
|
|
}
|
|
} else {
|
|
if (data.lang == CHINESE) {
|
|
needZero = true;
|
|
}
|
|
if (unit10Kidx != 0) {
|
|
if (data.lang == KOREAN && idx != NUM_BUF_SIZE) {
|
|
buf[--idx] = ' ';
|
|
}
|
|
buf[--idx] = data.unit10K[unit10Kidx - 1];
|
|
}
|
|
if (unitidx != 0) {
|
|
buf[--idx] = data.unit[unitidx - 1];
|
|
}
|
|
if (cur != 1) {
|
|
buf[--idx] = data.digit[cur];
|
|
} else {
|
|
bool needOne = true;
|
|
if (data.informal) {
|
|
switch (data.lang) {
|
|
case CHINESE:
|
|
if (unitidx == 1 &&
|
|
(aOrdinal == 1 || (pos > 4 && aOrdinal % 1000 == 1))) {
|
|
needOne = false;
|
|
}
|
|
break;
|
|
case JAPANESE:
|
|
if (unitidx > 0 &&
|
|
(unitidx != 3 || (pos == 3 && aOrdinal == 1))) {
|
|
needOne = false;
|
|
}
|
|
break;
|
|
case KOREAN:
|
|
if (unitidx > 0 || (pos == 4 && (aOrdinal % 1000) == 1)) {
|
|
needOne = false;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
if (needOne) {
|
|
buf[--idx] = data.digit[1];
|
|
}
|
|
}
|
|
unit10Kidx = 0;
|
|
}
|
|
aOrdinal /= 10;
|
|
pos++;
|
|
} while (aOrdinal > 0);
|
|
aResult.Assign(buf + idx, NUM_BUF_SIZE - idx);
|
|
return true;
|
|
}
|
|
|
|
#define HEBREW_GERESH 0x05F3
|
|
static const char16_t gHebrewDigit[22] =
|
|
{
|
|
// 1 2 3 4 5 6 7 8 9
|
|
0x05D0, 0x05D1, 0x05D2, 0x05D3, 0x05D4, 0x05D5, 0x05D6, 0x05D7, 0x05D8,
|
|
// 10 20 30 40 50 60 70 80 90
|
|
0x05D9, 0x05DB, 0x05DC, 0x05DE, 0x05E0, 0x05E1, 0x05E2, 0x05E4, 0x05E6,
|
|
// 100 200 300 400
|
|
0x05E7, 0x05E8, 0x05E9, 0x05EA
|
|
};
|
|
|
|
static bool
|
|
HebrewToText(CounterValue aOrdinal, nsSubstring& aResult)
|
|
{
|
|
if (aOrdinal < 1 || aOrdinal > 999999) {
|
|
return false;
|
|
}
|
|
|
|
bool outputSep = false;
|
|
nsAutoString allText, thousandsGroup;
|
|
do {
|
|
thousandsGroup.Truncate();
|
|
int32_t n3 = aOrdinal % 1000;
|
|
// Process digit for 100 - 900
|
|
for(int32_t n1 = 400; n1 > 0; )
|
|
{
|
|
if( n3 >= n1)
|
|
{
|
|
n3 -= n1;
|
|
thousandsGroup.Append(gHebrewDigit[(n1/100)-1+18]);
|
|
} else {
|
|
n1 -= 100;
|
|
} // if
|
|
} // for
|
|
|
|
// Process digit for 10 - 90
|
|
int32_t n2;
|
|
if( n3 >= 10 )
|
|
{
|
|
// Special process for 15 and 16
|
|
if(( 15 == n3 ) || (16 == n3)) {
|
|
// Special rule for religious reason...
|
|
// 15 is represented by 9 and 6, not 10 and 5
|
|
// 16 is represented by 9 and 7, not 10 and 6
|
|
n2 = 9;
|
|
thousandsGroup.Append(gHebrewDigit[ n2 - 1]);
|
|
} else {
|
|
n2 = n3 - (n3 % 10);
|
|
thousandsGroup.Append(gHebrewDigit[(n2/10)-1+9]);
|
|
} // if
|
|
n3 -= n2;
|
|
} // if
|
|
|
|
// Process digit for 1 - 9
|
|
if ( n3 > 0)
|
|
thousandsGroup.Append(gHebrewDigit[n3-1]);
|
|
if (outputSep)
|
|
thousandsGroup.Append((char16_t)HEBREW_GERESH);
|
|
if (allText.IsEmpty())
|
|
allText = thousandsGroup;
|
|
else
|
|
allText = thousandsGroup + allText;
|
|
aOrdinal /= 1000;
|
|
outputSep = true;
|
|
} while (aOrdinal >= 1);
|
|
|
|
aResult = allText;
|
|
return true;
|
|
}
|
|
|
|
// Convert ordinal to Ethiopic numeric representation.
|
|
// The detail is available at http://www.ethiopic.org/Numerals/
|
|
// The algorithm used here is based on the pseudo-code put up there by
|
|
// Daniel Yacob <yacob@geez.org>.
|
|
// Another reference is Unicode 3.0 standard section 11.1.
|
|
#define ETHIOPIC_ONE 0x1369
|
|
#define ETHIOPIC_TEN 0x1372
|
|
#define ETHIOPIC_HUNDRED 0x137B
|
|
#define ETHIOPIC_TEN_THOUSAND 0x137C
|
|
|
|
static bool
|
|
EthiopicToText(CounterValue aOrdinal, nsSubstring& aResult)
|
|
{
|
|
if (aOrdinal < 1) {
|
|
return false;
|
|
}
|
|
|
|
nsAutoString asciiNumberString; // decimal string representation of ordinal
|
|
DecimalToText(aOrdinal, asciiNumberString);
|
|
uint8_t asciiStringLength = asciiNumberString.Length();
|
|
|
|
// If number length is odd, add a leading "0"
|
|
// the leading "0" preconditions the string to always have the
|
|
// leading tens place populated, this avoids a check within the loop.
|
|
// If we didn't add the leading "0", decrement asciiStringLength so
|
|
// it will be equivalent to a zero-based index in both cases.
|
|
if (asciiStringLength & 1) {
|
|
asciiNumberString.Insert(NS_LITERAL_STRING("0"), 0);
|
|
} else {
|
|
asciiStringLength--;
|
|
}
|
|
|
|
aResult.Truncate();
|
|
// Iterate from the highest digits to lowest
|
|
// indexFromLeft indexes digits (0 = most significant)
|
|
// groupIndexFromRight indexes pairs of digits (0 = least significant)
|
|
for (uint8_t indexFromLeft = 0, groupIndexFromRight = asciiStringLength >> 1;
|
|
indexFromLeft <= asciiStringLength;
|
|
indexFromLeft += 2, groupIndexFromRight--) {
|
|
uint8_t tensValue = asciiNumberString.CharAt(indexFromLeft) & 0x0F;
|
|
uint8_t unitsValue = asciiNumberString.CharAt(indexFromLeft + 1) & 0x0F;
|
|
uint8_t groupValue = tensValue * 10 + unitsValue;
|
|
|
|
bool oddGroup = (groupIndexFromRight & 1);
|
|
|
|
// we want to clear ETHIOPIC_ONE when it is superfluous
|
|
if (aOrdinal > 1 &&
|
|
groupValue == 1 && // one without a leading ten
|
|
(oddGroup || indexFromLeft == 0)) { // preceding (100) or leading the sequence
|
|
unitsValue = 0;
|
|
}
|
|
|
|
// put it all together...
|
|
if (tensValue) {
|
|
// map onto Ethiopic "tens":
|
|
aResult.Append((char16_t) (tensValue + ETHIOPIC_TEN - 1));
|
|
}
|
|
if (unitsValue) {
|
|
//map onto Ethiopic "units":
|
|
aResult.Append((char16_t) (unitsValue + ETHIOPIC_ONE - 1));
|
|
}
|
|
// Add a separator for all even groups except the last,
|
|
// and for odd groups with non-zero value.
|
|
if (oddGroup) {
|
|
if (groupValue) {
|
|
aResult.Append((char16_t) ETHIOPIC_HUNDRED);
|
|
}
|
|
} else {
|
|
if (groupIndexFromRight) {
|
|
aResult.Append((char16_t) ETHIOPIC_TEN_THOUSAND);
|
|
}
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
static uint8_t
|
|
GetDefaultSpeakAsForSystem(uint8_t aSystem)
|
|
{
|
|
MOZ_ASSERT(aSystem != NS_STYLE_COUNTER_SYSTEM_EXTENDS,
|
|
"Extends system does not have static default speak-as");
|
|
switch (aSystem) {
|
|
case NS_STYLE_COUNTER_SYSTEM_ALPHABETIC:
|
|
return NS_STYLE_COUNTER_SPEAKAS_SPELL_OUT;
|
|
case NS_STYLE_COUNTER_SYSTEM_CYCLIC:
|
|
return NS_STYLE_COUNTER_SPEAKAS_BULLETS;
|
|
default:
|
|
return NS_STYLE_COUNTER_SPEAKAS_NUMBERS;
|
|
}
|
|
}
|
|
|
|
static bool
|
|
SystemUsesNegativeSign(uint8_t aSystem)
|
|
{
|
|
MOZ_ASSERT(aSystem != NS_STYLE_COUNTER_SYSTEM_EXTENDS,
|
|
"Cannot check this for extending style");
|
|
switch (aSystem) {
|
|
case NS_STYLE_COUNTER_SYSTEM_SYMBOLIC:
|
|
case NS_STYLE_COUNTER_SYSTEM_ALPHABETIC:
|
|
case NS_STYLE_COUNTER_SYSTEM_NUMERIC:
|
|
case NS_STYLE_COUNTER_SYSTEM_ADDITIVE:
|
|
return true;
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
class BuiltinCounterStyle : public CounterStyle
|
|
{
|
|
public:
|
|
friend class CounterStyleManager;
|
|
|
|
// will be initialized by CounterStyleManager::InitializeBuiltinCounterStyles
|
|
MOZ_CONSTEXPR BuiltinCounterStyle()
|
|
: CounterStyle(NS_STYLE_LIST_STYLE_NONE)
|
|
{
|
|
}
|
|
|
|
protected:
|
|
MOZ_CONSTEXPR explicit BuiltinCounterStyle(int32_t aStyle)
|
|
: CounterStyle(aStyle)
|
|
{
|
|
}
|
|
|
|
public:
|
|
virtual void GetPrefix(nsSubstring& aResult) override;
|
|
virtual void GetSuffix(nsSubstring& aResult) override;
|
|
virtual void GetSpokenCounterText(CounterValue aOrdinal,
|
|
WritingMode aWritingMode,
|
|
nsSubstring& aResult,
|
|
bool& aIsBullet) override;
|
|
virtual bool IsBullet() override;
|
|
|
|
virtual void GetNegative(NegativeType& aResult) override;
|
|
virtual bool IsOrdinalInRange(CounterValue aOrdinal) override;
|
|
virtual bool IsOrdinalInAutoRange(CounterValue aOrdinal) override;
|
|
virtual void GetPad(PadType& aResult) override;
|
|
virtual CounterStyle* GetFallback() override;
|
|
virtual uint8_t GetSpeakAs() override;
|
|
virtual bool UseNegativeSign() override;
|
|
|
|
virtual bool GetInitialCounterText(CounterValue aOrdinal,
|
|
WritingMode aWritingMode,
|
|
nsSubstring& aResult,
|
|
bool& aIsRTL) override;
|
|
|
|
// Builtin counter style does not need refcount at all
|
|
NS_IMETHOD_(MozExternalRefCountType) AddRef() override { return 2; }
|
|
NS_IMETHOD_(MozExternalRefCountType) Release() override { return 2; }
|
|
};
|
|
|
|
/* virtual */ void
|
|
BuiltinCounterStyle::GetPrefix(nsSubstring& aResult)
|
|
{
|
|
aResult.Truncate();
|
|
}
|
|
|
|
/* virtual */ void
|
|
BuiltinCounterStyle::GetSuffix(nsSubstring& aResult)
|
|
{
|
|
switch (mStyle) {
|
|
case NS_STYLE_LIST_STYLE_NONE:
|
|
aResult.Truncate();
|
|
break;
|
|
|
|
case NS_STYLE_LIST_STYLE_DISC:
|
|
case NS_STYLE_LIST_STYLE_CIRCLE:
|
|
case NS_STYLE_LIST_STYLE_SQUARE:
|
|
case NS_STYLE_LIST_STYLE_DISCLOSURE_CLOSED:
|
|
case NS_STYLE_LIST_STYLE_DISCLOSURE_OPEN:
|
|
case NS_STYLE_LIST_STYLE_ETHIOPIC_NUMERIC:
|
|
aResult = ' ';
|
|
break;
|
|
|
|
case NS_STYLE_LIST_STYLE_TRAD_CHINESE_INFORMAL:
|
|
case NS_STYLE_LIST_STYLE_TRAD_CHINESE_FORMAL:
|
|
case NS_STYLE_LIST_STYLE_SIMP_CHINESE_INFORMAL:
|
|
case NS_STYLE_LIST_STYLE_SIMP_CHINESE_FORMAL:
|
|
case NS_STYLE_LIST_STYLE_JAPANESE_INFORMAL:
|
|
case NS_STYLE_LIST_STYLE_JAPANESE_FORMAL:
|
|
aResult = 0x3001;
|
|
break;
|
|
|
|
case NS_STYLE_LIST_STYLE_KOREAN_HANGUL_FORMAL:
|
|
case NS_STYLE_LIST_STYLE_KOREAN_HANJA_INFORMAL:
|
|
case NS_STYLE_LIST_STYLE_KOREAN_HANJA_FORMAL:
|
|
aResult.AssignLiteral(MOZ_UTF16(", "));
|
|
break;
|
|
|
|
default:
|
|
aResult.AssignLiteral(MOZ_UTF16(". "));
|
|
break;
|
|
}
|
|
}
|
|
|
|
static const char16_t kDiscCharacter = 0x2022;
|
|
static const char16_t kCircleCharacter = 0x25e6;
|
|
static const char16_t kSquareCharacter = 0x25fe;
|
|
static const char16_t kRightPointingCharacter = 0x25b8;
|
|
static const char16_t kLeftPointingCharacter = 0x25c2;
|
|
static const char16_t kDownPointingCharacter = 0x25be;
|
|
|
|
/* virtual */ void
|
|
BuiltinCounterStyle::GetSpokenCounterText(CounterValue aOrdinal,
|
|
WritingMode aWritingMode,
|
|
nsSubstring& aResult,
|
|
bool& aIsBullet)
|
|
{
|
|
switch (mStyle) {
|
|
case NS_STYLE_LIST_STYLE_NONE:
|
|
case NS_STYLE_LIST_STYLE_DISC:
|
|
case NS_STYLE_LIST_STYLE_CIRCLE:
|
|
case NS_STYLE_LIST_STYLE_SQUARE:
|
|
case NS_STYLE_LIST_STYLE_DISCLOSURE_CLOSED:
|
|
case NS_STYLE_LIST_STYLE_DISCLOSURE_OPEN: {
|
|
// Same as the initial representation
|
|
bool isRTL;
|
|
GetInitialCounterText(aOrdinal, aWritingMode, aResult, isRTL);
|
|
aIsBullet = true;
|
|
break;
|
|
}
|
|
default:
|
|
CounterStyle::GetSpokenCounterText(
|
|
aOrdinal, aWritingMode, aResult, aIsBullet);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* virtual */ bool
|
|
BuiltinCounterStyle::IsBullet()
|
|
{
|
|
switch (mStyle) {
|
|
case NS_STYLE_LIST_STYLE_DISC:
|
|
case NS_STYLE_LIST_STYLE_CIRCLE:
|
|
case NS_STYLE_LIST_STYLE_SQUARE:
|
|
case NS_STYLE_LIST_STYLE_DISCLOSURE_CLOSED:
|
|
case NS_STYLE_LIST_STYLE_DISCLOSURE_OPEN:
|
|
return true;
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
static const char16_t gJapaneseNegative[] = {
|
|
0x30de, 0x30a4, 0x30ca, 0x30b9, 0x0000
|
|
};
|
|
static const char16_t gKoreanNegative[] = {
|
|
0xb9c8, 0xc774, 0xb108, 0xc2a4, 0x0020, 0x0000
|
|
};
|
|
static const char16_t gSimpChineseNegative[] = {
|
|
0x8d1f, 0x0000
|
|
};
|
|
static const char16_t gTradChineseNegative[] = {
|
|
0x8ca0, 0x0000
|
|
};
|
|
|
|
/* virtual */ void
|
|
BuiltinCounterStyle::GetNegative(NegativeType& aResult)
|
|
{
|
|
switch (mStyle) {
|
|
case NS_STYLE_LIST_STYLE_JAPANESE_FORMAL:
|
|
case NS_STYLE_LIST_STYLE_JAPANESE_INFORMAL:
|
|
aResult.before = gJapaneseNegative;
|
|
break;
|
|
|
|
case NS_STYLE_LIST_STYLE_KOREAN_HANGUL_FORMAL:
|
|
case NS_STYLE_LIST_STYLE_KOREAN_HANJA_INFORMAL:
|
|
case NS_STYLE_LIST_STYLE_KOREAN_HANJA_FORMAL:
|
|
aResult.before = gKoreanNegative;
|
|
break;
|
|
|
|
case NS_STYLE_LIST_STYLE_SIMP_CHINESE_FORMAL:
|
|
case NS_STYLE_LIST_STYLE_SIMP_CHINESE_INFORMAL:
|
|
aResult.before = gSimpChineseNegative;
|
|
break;
|
|
|
|
case NS_STYLE_LIST_STYLE_TRAD_CHINESE_FORMAL:
|
|
case NS_STYLE_LIST_STYLE_TRAD_CHINESE_INFORMAL:
|
|
aResult.before = gTradChineseNegative;
|
|
break;
|
|
|
|
default:
|
|
aResult.before.AssignLiteral(MOZ_UTF16("-"));
|
|
}
|
|
aResult.after.Truncate();
|
|
}
|
|
|
|
/* virtual */ bool
|
|
BuiltinCounterStyle::IsOrdinalInRange(CounterValue aOrdinal)
|
|
{
|
|
switch (mStyle) {
|
|
default:
|
|
// cyclic
|
|
case NS_STYLE_LIST_STYLE_NONE:
|
|
case NS_STYLE_LIST_STYLE_DISC:
|
|
case NS_STYLE_LIST_STYLE_CIRCLE:
|
|
case NS_STYLE_LIST_STYLE_SQUARE:
|
|
case NS_STYLE_LIST_STYLE_DISCLOSURE_CLOSED:
|
|
case NS_STYLE_LIST_STYLE_DISCLOSURE_OPEN:
|
|
// use DecimalToText
|
|
case NS_STYLE_LIST_STYLE_DECIMAL:
|
|
// use CJKIdeographicToText
|
|
case NS_STYLE_LIST_STYLE_JAPANESE_FORMAL:
|
|
case NS_STYLE_LIST_STYLE_JAPANESE_INFORMAL:
|
|
case NS_STYLE_LIST_STYLE_KOREAN_HANJA_FORMAL:
|
|
case NS_STYLE_LIST_STYLE_KOREAN_HANJA_INFORMAL:
|
|
case NS_STYLE_LIST_STYLE_KOREAN_HANGUL_FORMAL:
|
|
case NS_STYLE_LIST_STYLE_TRAD_CHINESE_FORMAL:
|
|
case NS_STYLE_LIST_STYLE_TRAD_CHINESE_INFORMAL:
|
|
case NS_STYLE_LIST_STYLE_SIMP_CHINESE_FORMAL:
|
|
case NS_STYLE_LIST_STYLE_SIMP_CHINESE_INFORMAL:
|
|
return true;
|
|
|
|
// use EthiopicToText
|
|
case NS_STYLE_LIST_STYLE_ETHIOPIC_NUMERIC:
|
|
return aOrdinal >= 1;
|
|
|
|
// use HebrewToText
|
|
case NS_STYLE_LIST_STYLE_HEBREW:
|
|
return aOrdinal >= 1 && aOrdinal <= 999999;
|
|
}
|
|
}
|
|
|
|
/* virtual */ bool
|
|
BuiltinCounterStyle::IsOrdinalInAutoRange(CounterValue aOrdinal)
|
|
{
|
|
switch (mStyle) {
|
|
// cyclic:
|
|
case NS_STYLE_LIST_STYLE_NONE:
|
|
case NS_STYLE_LIST_STYLE_DISC:
|
|
case NS_STYLE_LIST_STYLE_CIRCLE:
|
|
case NS_STYLE_LIST_STYLE_SQUARE:
|
|
case NS_STYLE_LIST_STYLE_DISCLOSURE_CLOSED:
|
|
case NS_STYLE_LIST_STYLE_DISCLOSURE_OPEN:
|
|
// numeric:
|
|
case NS_STYLE_LIST_STYLE_DECIMAL:
|
|
return true;
|
|
|
|
// additive:
|
|
case NS_STYLE_LIST_STYLE_HEBREW:
|
|
return aOrdinal >= 0;
|
|
|
|
// complex predefined:
|
|
case NS_STYLE_LIST_STYLE_JAPANESE_FORMAL:
|
|
case NS_STYLE_LIST_STYLE_JAPANESE_INFORMAL:
|
|
case NS_STYLE_LIST_STYLE_KOREAN_HANJA_FORMAL:
|
|
case NS_STYLE_LIST_STYLE_KOREAN_HANJA_INFORMAL:
|
|
case NS_STYLE_LIST_STYLE_KOREAN_HANGUL_FORMAL:
|
|
case NS_STYLE_LIST_STYLE_TRAD_CHINESE_FORMAL:
|
|
case NS_STYLE_LIST_STYLE_TRAD_CHINESE_INFORMAL:
|
|
case NS_STYLE_LIST_STYLE_SIMP_CHINESE_FORMAL:
|
|
case NS_STYLE_LIST_STYLE_SIMP_CHINESE_INFORMAL:
|
|
case NS_STYLE_LIST_STYLE_ETHIOPIC_NUMERIC:
|
|
return IsOrdinalInRange(aOrdinal);
|
|
|
|
default:
|
|
NS_NOTREACHED("Unknown counter style");
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/* virtual */ void
|
|
BuiltinCounterStyle::GetPad(PadType& aResult)
|
|
{
|
|
aResult.width = 0;
|
|
aResult.symbol.Truncate();
|
|
}
|
|
|
|
/* virtual */ CounterStyle*
|
|
BuiltinCounterStyle::GetFallback()
|
|
{
|
|
// Fallback of dependent builtin counter styles are handled in class
|
|
// DependentBuiltinCounterStyle.
|
|
return CounterStyleManager::GetDecimalStyle();
|
|
}
|
|
|
|
/* virtual */ uint8_t
|
|
BuiltinCounterStyle::GetSpeakAs()
|
|
{
|
|
switch (mStyle) {
|
|
case NS_STYLE_LIST_STYLE_NONE:
|
|
case NS_STYLE_LIST_STYLE_DISC:
|
|
case NS_STYLE_LIST_STYLE_CIRCLE:
|
|
case NS_STYLE_LIST_STYLE_SQUARE:
|
|
case NS_STYLE_LIST_STYLE_DISCLOSURE_CLOSED:
|
|
case NS_STYLE_LIST_STYLE_DISCLOSURE_OPEN:
|
|
return NS_STYLE_COUNTER_SPEAKAS_BULLETS;
|
|
default:
|
|
return NS_STYLE_COUNTER_SPEAKAS_NUMBERS;
|
|
}
|
|
}
|
|
|
|
/* virtual */ bool
|
|
BuiltinCounterStyle::UseNegativeSign()
|
|
{
|
|
switch (mStyle) {
|
|
case NS_STYLE_LIST_STYLE_NONE:
|
|
case NS_STYLE_LIST_STYLE_DISC:
|
|
case NS_STYLE_LIST_STYLE_CIRCLE:
|
|
case NS_STYLE_LIST_STYLE_SQUARE:
|
|
case NS_STYLE_LIST_STYLE_DISCLOSURE_CLOSED:
|
|
case NS_STYLE_LIST_STYLE_DISCLOSURE_OPEN:
|
|
return false;
|
|
default:
|
|
return true;
|
|
}
|
|
}
|
|
|
|
/* virtual */ bool
|
|
BuiltinCounterStyle::GetInitialCounterText(CounterValue aOrdinal,
|
|
WritingMode aWritingMode,
|
|
nsSubstring& aResult,
|
|
bool& aIsRTL)
|
|
{
|
|
aIsRTL = false;
|
|
switch (mStyle) {
|
|
// used by counters & extends counter-style code only
|
|
// XXX We really need to do this the same way we do list bullets.
|
|
case NS_STYLE_LIST_STYLE_NONE:
|
|
aResult.Truncate();
|
|
return true;
|
|
case NS_STYLE_LIST_STYLE_DISC:
|
|
aResult.Assign(kDiscCharacter);
|
|
return true;
|
|
case NS_STYLE_LIST_STYLE_CIRCLE:
|
|
aResult.Assign(kCircleCharacter);
|
|
return true;
|
|
case NS_STYLE_LIST_STYLE_SQUARE:
|
|
aResult.Assign(kSquareCharacter);
|
|
return true;
|
|
case NS_STYLE_LIST_STYLE_DISCLOSURE_CLOSED:
|
|
if (aWritingMode.IsVertical()) {
|
|
aResult.Assign(kDownPointingCharacter);
|
|
} else if (aWritingMode.IsBidiLTR()) {
|
|
aResult.Assign(kRightPointingCharacter);
|
|
} else {
|
|
aResult.Assign(kLeftPointingCharacter);
|
|
}
|
|
return true;
|
|
case NS_STYLE_LIST_STYLE_DISCLOSURE_OPEN:
|
|
if (!aWritingMode.IsVertical()) {
|
|
aResult.Assign(kDownPointingCharacter);
|
|
} else if (aWritingMode.IsVerticalLR()) {
|
|
aResult.Assign(kRightPointingCharacter);
|
|
} else {
|
|
aResult.Assign(kLeftPointingCharacter);
|
|
}
|
|
return true;
|
|
|
|
case NS_STYLE_LIST_STYLE_DECIMAL:
|
|
return DecimalToText(aOrdinal, aResult);
|
|
|
|
case NS_STYLE_LIST_STYLE_TRAD_CHINESE_INFORMAL:
|
|
return CJKIdeographicToText(aOrdinal, aResult, gDataTradChineseInformal);
|
|
case NS_STYLE_LIST_STYLE_TRAD_CHINESE_FORMAL:
|
|
return CJKIdeographicToText(aOrdinal, aResult, gDataTradChineseFormal);
|
|
case NS_STYLE_LIST_STYLE_SIMP_CHINESE_INFORMAL:
|
|
return CJKIdeographicToText(aOrdinal, aResult, gDataSimpChineseInformal);
|
|
case NS_STYLE_LIST_STYLE_SIMP_CHINESE_FORMAL:
|
|
return CJKIdeographicToText(aOrdinal, aResult, gDataSimpChineseFormal);
|
|
case NS_STYLE_LIST_STYLE_JAPANESE_INFORMAL:
|
|
return CJKIdeographicToText(aOrdinal, aResult, gDataJapaneseInformal);
|
|
case NS_STYLE_LIST_STYLE_JAPANESE_FORMAL:
|
|
return CJKIdeographicToText(aOrdinal, aResult, gDataJapaneseFormal);
|
|
case NS_STYLE_LIST_STYLE_KOREAN_HANGUL_FORMAL:
|
|
return CJKIdeographicToText(aOrdinal, aResult, gDataKoreanHangulFormal);
|
|
case NS_STYLE_LIST_STYLE_KOREAN_HANJA_INFORMAL:
|
|
return CJKIdeographicToText(aOrdinal, aResult, gDataKoreanHanjaInformal);
|
|
case NS_STYLE_LIST_STYLE_KOREAN_HANJA_FORMAL:
|
|
return CJKIdeographicToText(aOrdinal, aResult, gDataKoreanHanjaFormal);
|
|
|
|
case NS_STYLE_LIST_STYLE_HEBREW:
|
|
aIsRTL = true;
|
|
return HebrewToText(aOrdinal, aResult);
|
|
|
|
case NS_STYLE_LIST_STYLE_ETHIOPIC_NUMERIC:
|
|
return EthiopicToText(aOrdinal, aResult);
|
|
|
|
default:
|
|
NS_NOTREACHED("Unknown builtin counter style");
|
|
return false;
|
|
}
|
|
}
|
|
|
|
class DependentBuiltinCounterStyle final : public BuiltinCounterStyle
|
|
{
|
|
private:
|
|
~DependentBuiltinCounterStyle() {}
|
|
public:
|
|
DependentBuiltinCounterStyle(int32_t aStyle, CounterStyleManager* aManager)
|
|
: BuiltinCounterStyle(aStyle),
|
|
mManager(aManager)
|
|
{
|
|
NS_ASSERTION(IsDependentStyle(), "Not a dependent builtin style");
|
|
MOZ_ASSERT(!IsCustomStyle(), "Not a builtin style");
|
|
}
|
|
|
|
virtual CounterStyle* GetFallback() override;
|
|
|
|
// DependentBuiltinCounterStyle is managed in the same way as
|
|
// CustomCounterStyle.
|
|
NS_IMETHOD_(MozExternalRefCountType) AddRef() override;
|
|
NS_IMETHOD_(MozExternalRefCountType) Release() override;
|
|
|
|
void* operator new(size_t sz, nsPresContext* aPresContext) CPP_THROW_NEW
|
|
{
|
|
return aPresContext->PresShell()->AllocateByObjectID(
|
|
eArenaObjectID_DependentBuiltinCounterStyle, sz);
|
|
}
|
|
|
|
private:
|
|
void Destroy()
|
|
{
|
|
nsIPresShell* shell = mManager->PresContext()->PresShell();
|
|
this->~DependentBuiltinCounterStyle();
|
|
shell->FreeByObjectID(eArenaObjectID_DependentBuiltinCounterStyle, this);
|
|
}
|
|
|
|
CounterStyleManager* mManager;
|
|
|
|
nsAutoRefCnt mRefCnt;
|
|
NS_DECL_OWNINGTHREAD
|
|
};
|
|
|
|
NS_IMPL_ADDREF(DependentBuiltinCounterStyle)
|
|
NS_IMPL_RELEASE_WITH_DESTROY(DependentBuiltinCounterStyle, Destroy())
|
|
|
|
/* virtual */ CounterStyle*
|
|
DependentBuiltinCounterStyle::GetFallback()
|
|
{
|
|
switch (GetStyle()) {
|
|
case NS_STYLE_LIST_STYLE_JAPANESE_INFORMAL:
|
|
case NS_STYLE_LIST_STYLE_JAPANESE_FORMAL:
|
|
case NS_STYLE_LIST_STYLE_KOREAN_HANGUL_FORMAL:
|
|
case NS_STYLE_LIST_STYLE_KOREAN_HANJA_INFORMAL:
|
|
case NS_STYLE_LIST_STYLE_KOREAN_HANJA_FORMAL:
|
|
case NS_STYLE_LIST_STYLE_SIMP_CHINESE_INFORMAL:
|
|
case NS_STYLE_LIST_STYLE_SIMP_CHINESE_FORMAL:
|
|
case NS_STYLE_LIST_STYLE_TRAD_CHINESE_INFORMAL:
|
|
case NS_STYLE_LIST_STYLE_TRAD_CHINESE_FORMAL:
|
|
// These styles all have a larger range than cjk-decimal, so the
|
|
// only case fallback is accessed is that they are extended.
|
|
// Since extending styles will cache the data themselves, we need
|
|
// not cache it here.
|
|
return mManager->BuildCounterStyle(NS_LITERAL_STRING("cjk-decimal"));
|
|
default:
|
|
NS_NOTREACHED("Not a valid dependent builtin style");
|
|
return BuiltinCounterStyle::GetFallback();
|
|
}
|
|
}
|
|
|
|
class CustomCounterStyle final : public CounterStyle
|
|
{
|
|
private:
|
|
~CustomCounterStyle() {}
|
|
public:
|
|
CustomCounterStyle(CounterStyleManager* aManager,
|
|
nsCSSCounterStyleRule* aRule)
|
|
: CounterStyle(NS_STYLE_LIST_STYLE_CUSTOM),
|
|
mManager(aManager),
|
|
mRule(aRule),
|
|
mRuleGeneration(aRule->GetGeneration()),
|
|
mSystem(aRule->GetSystem()),
|
|
mFlags(0),
|
|
mFallback(nullptr),
|
|
mSpeakAsCounter(nullptr),
|
|
mExtends(nullptr),
|
|
mExtendsRoot(nullptr)
|
|
{
|
|
}
|
|
|
|
// This method will clear all cached data in the style and update the
|
|
// generation number of the rule. It should be called when the rule of
|
|
// this style is changed.
|
|
void ResetCachedData();
|
|
|
|
// This method will reset all cached data which may depend on other
|
|
// counter style. It will reset all pointers to other counter styles.
|
|
// For counter style extends other, in addition, all fields will be
|
|
// reset to uninitialized state. This method should be called when any
|
|
// other counter style is added, removed, or changed.
|
|
void ResetDependentData();
|
|
|
|
nsCSSCounterStyleRule* GetRule() const { return mRule; }
|
|
uint32_t GetRuleGeneration() const { return mRuleGeneration; }
|
|
|
|
virtual void GetPrefix(nsSubstring& aResult) override;
|
|
virtual void GetSuffix(nsSubstring& aResult) override;
|
|
virtual void GetSpokenCounterText(CounterValue aOrdinal,
|
|
WritingMode aWritingMode,
|
|
nsSubstring& aResult,
|
|
bool& aIsBullet) override;
|
|
virtual bool IsBullet() override;
|
|
|
|
virtual void GetNegative(NegativeType& aResult) override;
|
|
virtual bool IsOrdinalInRange(CounterValue aOrdinal) override;
|
|
virtual bool IsOrdinalInAutoRange(CounterValue aOrdinal) override;
|
|
virtual void GetPad(PadType& aResult) override;
|
|
virtual CounterStyle* GetFallback() override;
|
|
virtual uint8_t GetSpeakAs() override;
|
|
virtual bool UseNegativeSign() override;
|
|
|
|
virtual void CallFallbackStyle(CounterValue aOrdinal,
|
|
WritingMode aWritingMode,
|
|
nsSubstring& aResult,
|
|
bool& aIsRTL) override;
|
|
virtual bool GetInitialCounterText(CounterValue aOrdinal,
|
|
WritingMode aWritingMode,
|
|
nsSubstring& aResult,
|
|
bool& aIsRTL) override;
|
|
|
|
bool IsExtendsSystem()
|
|
{
|
|
return mSystem == NS_STYLE_COUNTER_SYSTEM_EXTENDS;
|
|
}
|
|
|
|
// CustomCounterStyle should be reference-counted because it may be
|
|
// dereferenced from the manager but still referenced by nodes and
|
|
// frames before the style change is propagated.
|
|
NS_IMETHOD_(MozExternalRefCountType) AddRef() override;
|
|
NS_IMETHOD_(MozExternalRefCountType) Release() override;
|
|
|
|
void* operator new(size_t sz, nsPresContext* aPresContext) CPP_THROW_NEW
|
|
{
|
|
return aPresContext->PresShell()->AllocateByObjectID(
|
|
eArenaObjectID_CustomCounterStyle, sz);
|
|
}
|
|
|
|
private:
|
|
void Destroy()
|
|
{
|
|
nsIPresShell* shell = mManager->PresContext()->PresShell();
|
|
this->~CustomCounterStyle();
|
|
shell->FreeByObjectID(eArenaObjectID_CustomCounterStyle, this);
|
|
}
|
|
|
|
const nsTArray<nsString>& GetSymbols();
|
|
const nsTArray<AdditiveSymbol>& GetAdditiveSymbols();
|
|
|
|
// The speak-as values of counter styles may form a loop, and the
|
|
// loops may have complex interaction with the loop formed by
|
|
// extending. To solve this problem, the computation of speak-as is
|
|
// divided into two phases:
|
|
// 1. figure out the raw value, by ComputeRawSpeakAs, and
|
|
// 2. eliminate loop, by ComputeSpeakAs.
|
|
// See comments before the definitions of these methods for details.
|
|
uint8_t GetSpeakAsAutoValue();
|
|
void ComputeRawSpeakAs(uint8_t& aSpeakAs,
|
|
CounterStyle*& aSpeakAsCounter);
|
|
CounterStyle* ComputeSpeakAs();
|
|
|
|
CounterStyle* ComputeExtends();
|
|
CounterStyle* GetExtends();
|
|
CounterStyle* GetExtendsRoot();
|
|
|
|
// CounterStyleManager should always overlive any CounterStyle as it
|
|
// is owned by nsPresContext, and will be released after all nodes and
|
|
// frames are released.
|
|
CounterStyleManager* mManager;
|
|
|
|
RefPtr<nsCSSCounterStyleRule> mRule;
|
|
uint32_t mRuleGeneration;
|
|
|
|
uint8_t mSystem;
|
|
uint8_t mSpeakAs;
|
|
|
|
enum {
|
|
// loop detection
|
|
FLAG_EXTENDS_VISITED = 1 << 0,
|
|
FLAG_EXTENDS_LOOP = 1 << 1,
|
|
FLAG_SPEAKAS_VISITED = 1 << 2,
|
|
FLAG_SPEAKAS_LOOP = 1 << 3,
|
|
// field status
|
|
FLAG_NEGATIVE_INITED = 1 << 4,
|
|
FLAG_PREFIX_INITED = 1 << 5,
|
|
FLAG_SUFFIX_INITED = 1 << 6,
|
|
FLAG_PAD_INITED = 1 << 7,
|
|
FLAG_SPEAKAS_INITED = 1 << 8,
|
|
};
|
|
uint16_t mFlags;
|
|
|
|
// Fields below will be initialized when necessary.
|
|
nsTArray<nsString> mSymbols;
|
|
nsTArray<AdditiveSymbol> mAdditiveSymbols;
|
|
NegativeType mNegative;
|
|
nsString mPrefix, mSuffix;
|
|
PadType mPad;
|
|
|
|
// CounterStyleManager will guarantee that none of the pointers below
|
|
// refers to a freed CounterStyle. There are two possible cases where
|
|
// the manager will release its reference to a CounterStyle: 1. the
|
|
// manager itself is released, 2. a rule is invalidated. In the first
|
|
// case, all counter style are removed from the manager, and should
|
|
// also have been dereferenced from other objects. All styles will be
|
|
// released all together. In the second case, CounterStyleManager::
|
|
// NotifyRuleChanged will guarantee that all pointers will be reset
|
|
// before any CounterStyle is released.
|
|
|
|
CounterStyle* mFallback;
|
|
// This field refers to the last counter in a speak-as chain.
|
|
// That counter must not speak as another counter.
|
|
CounterStyle* mSpeakAsCounter;
|
|
|
|
CounterStyle* mExtends;
|
|
// This field refers to the last counter in the extends chain. The
|
|
// counter must be either a builtin style or a style whose system is
|
|
// not 'extends'.
|
|
CounterStyle* mExtendsRoot;
|
|
|
|
nsAutoRefCnt mRefCnt;
|
|
NS_DECL_OWNINGTHREAD
|
|
};
|
|
|
|
NS_IMPL_ADDREF(CustomCounterStyle)
|
|
NS_IMPL_RELEASE_WITH_DESTROY(CustomCounterStyle, Destroy())
|
|
|
|
void
|
|
CustomCounterStyle::ResetCachedData()
|
|
{
|
|
mSymbols.Clear();
|
|
mAdditiveSymbols.Clear();
|
|
mFlags &= ~(FLAG_NEGATIVE_INITED |
|
|
FLAG_PREFIX_INITED |
|
|
FLAG_SUFFIX_INITED |
|
|
FLAG_PAD_INITED |
|
|
FLAG_SPEAKAS_INITED);
|
|
mFallback = nullptr;
|
|
mSpeakAsCounter = nullptr;
|
|
mExtends = nullptr;
|
|
mExtendsRoot = nullptr;
|
|
mRuleGeneration = mRule->GetGeneration();
|
|
}
|
|
|
|
void
|
|
CustomCounterStyle::ResetDependentData()
|
|
{
|
|
mFlags &= ~FLAG_SPEAKAS_INITED;
|
|
mSpeakAsCounter = nullptr;
|
|
mFallback = nullptr;
|
|
mExtends = nullptr;
|
|
mExtendsRoot = nullptr;
|
|
if (IsExtendsSystem()) {
|
|
mFlags &= ~(FLAG_NEGATIVE_INITED |
|
|
FLAG_PREFIX_INITED |
|
|
FLAG_SUFFIX_INITED |
|
|
FLAG_PAD_INITED);
|
|
}
|
|
}
|
|
|
|
/* virtual */ void
|
|
CustomCounterStyle::GetPrefix(nsSubstring& aResult)
|
|
{
|
|
if (!(mFlags & FLAG_PREFIX_INITED)) {
|
|
mFlags |= FLAG_PREFIX_INITED;
|
|
|
|
const nsCSSValue& value = mRule->GetDesc(eCSSCounterDesc_Prefix);
|
|
if (value.UnitHasStringValue()) {
|
|
value.GetStringValue(mPrefix);
|
|
} else if (IsExtendsSystem()) {
|
|
GetExtends()->GetPrefix(mPrefix);
|
|
} else {
|
|
mPrefix.Truncate();
|
|
}
|
|
}
|
|
aResult = mPrefix;
|
|
}
|
|
|
|
/* virtual */ void
|
|
CustomCounterStyle::GetSuffix(nsSubstring& aResult)
|
|
{
|
|
if (!(mFlags & FLAG_SUFFIX_INITED)) {
|
|
mFlags |= FLAG_SUFFIX_INITED;
|
|
|
|
const nsCSSValue& value = mRule->GetDesc(eCSSCounterDesc_Suffix);
|
|
if (value.UnitHasStringValue()) {
|
|
value.GetStringValue(mSuffix);
|
|
} else if (IsExtendsSystem()) {
|
|
GetExtends()->GetSuffix(mSuffix);
|
|
} else {
|
|
mSuffix.AssignLiteral(MOZ_UTF16(". "));
|
|
}
|
|
}
|
|
aResult = mSuffix;
|
|
}
|
|
|
|
/* virtual */ void
|
|
CustomCounterStyle::GetSpokenCounterText(CounterValue aOrdinal,
|
|
WritingMode aWritingMode,
|
|
nsSubstring& aResult,
|
|
bool& aIsBullet)
|
|
{
|
|
if (GetSpeakAs() != NS_STYLE_COUNTER_SPEAKAS_OTHER) {
|
|
CounterStyle::GetSpokenCounterText(
|
|
aOrdinal, aWritingMode, aResult, aIsBullet);
|
|
} else {
|
|
MOZ_ASSERT(mSpeakAsCounter,
|
|
"mSpeakAsCounter should have been initialized.");
|
|
mSpeakAsCounter->GetSpokenCounterText(
|
|
aOrdinal, aWritingMode, aResult, aIsBullet);
|
|
}
|
|
}
|
|
|
|
/* virtual */ bool
|
|
CustomCounterStyle::IsBullet()
|
|
{
|
|
switch (mSystem) {
|
|
case NS_STYLE_COUNTER_SYSTEM_CYCLIC:
|
|
// Only use ::-moz-list-bullet for cyclic system
|
|
return true;
|
|
case NS_STYLE_COUNTER_SYSTEM_EXTENDS:
|
|
return GetExtendsRoot()->IsBullet();
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/* virtual */ void
|
|
CustomCounterStyle::GetNegative(NegativeType& aResult)
|
|
{
|
|
if (!(mFlags & FLAG_NEGATIVE_INITED)) {
|
|
mFlags |= FLAG_NEGATIVE_INITED;
|
|
const nsCSSValue& value = mRule->GetDesc(eCSSCounterDesc_Negative);
|
|
switch (value.GetUnit()) {
|
|
case eCSSUnit_Ident:
|
|
case eCSSUnit_String:
|
|
value.GetStringValue(mNegative.before);
|
|
mNegative.after.Truncate();
|
|
break;
|
|
case eCSSUnit_Pair: {
|
|
const nsCSSValuePair& pair = value.GetPairValue();
|
|
pair.mXValue.GetStringValue(mNegative.before);
|
|
pair.mYValue.GetStringValue(mNegative.after);
|
|
break;
|
|
}
|
|
default: {
|
|
if (IsExtendsSystem()) {
|
|
GetExtends()->GetNegative(mNegative);
|
|
} else {
|
|
mNegative.before.AssignLiteral(MOZ_UTF16("-"));
|
|
mNegative.after.Truncate();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
aResult = mNegative;
|
|
}
|
|
|
|
static inline bool
|
|
IsRangeValueInfinite(const nsCSSValue& aValue)
|
|
{
|
|
return aValue.GetUnit() == eCSSUnit_Enumerated &&
|
|
aValue.GetIntValue() == NS_STYLE_COUNTER_RANGE_INFINITE;
|
|
}
|
|
|
|
/* virtual */ bool
|
|
CustomCounterStyle::IsOrdinalInRange(CounterValue aOrdinal)
|
|
{
|
|
const nsCSSValue& value = mRule->GetDesc(eCSSCounterDesc_Range);
|
|
if (value.GetUnit() == eCSSUnit_PairList) {
|
|
for (const nsCSSValuePairList* item = value.GetPairListValue();
|
|
item != nullptr; item = item->mNext) {
|
|
const nsCSSValue& lowerBound = item->mXValue;
|
|
const nsCSSValue& upperBound = item->mYValue;
|
|
if ((IsRangeValueInfinite(lowerBound) ||
|
|
aOrdinal >= lowerBound.GetIntValue()) &&
|
|
(IsRangeValueInfinite(upperBound) ||
|
|
aOrdinal <= upperBound.GetIntValue())) {
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
} else if (IsExtendsSystem() && value.GetUnit() == eCSSUnit_None) {
|
|
// Only use the range of extended style when 'range' is not specified.
|
|
return GetExtends()->IsOrdinalInRange(aOrdinal);
|
|
}
|
|
return IsOrdinalInAutoRange(aOrdinal);
|
|
}
|
|
|
|
/* virtual */ bool
|
|
CustomCounterStyle::IsOrdinalInAutoRange(CounterValue aOrdinal)
|
|
{
|
|
switch (mSystem) {
|
|
case NS_STYLE_COUNTER_SYSTEM_CYCLIC:
|
|
case NS_STYLE_COUNTER_SYSTEM_NUMERIC:
|
|
case NS_STYLE_COUNTER_SYSTEM_FIXED:
|
|
return true;
|
|
case NS_STYLE_COUNTER_SYSTEM_ALPHABETIC:
|
|
case NS_STYLE_COUNTER_SYSTEM_SYMBOLIC:
|
|
return aOrdinal >= 1;
|
|
case NS_STYLE_COUNTER_SYSTEM_ADDITIVE:
|
|
return aOrdinal >= 0;
|
|
case NS_STYLE_COUNTER_SYSTEM_EXTENDS:
|
|
return GetExtendsRoot()->IsOrdinalInAutoRange(aOrdinal);
|
|
default:
|
|
NS_NOTREACHED("Invalid system for computing auto value.");
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/* virtual */ void
|
|
CustomCounterStyle::GetPad(PadType& aResult)
|
|
{
|
|
if (!(mFlags & FLAG_PAD_INITED)) {
|
|
mFlags |= FLAG_PAD_INITED;
|
|
const nsCSSValue& value = mRule->GetDesc(eCSSCounterDesc_Pad);
|
|
if (value.GetUnit() == eCSSUnit_Pair) {
|
|
const nsCSSValuePair& pair = value.GetPairValue();
|
|
mPad.width = pair.mXValue.GetIntValue();
|
|
pair.mYValue.GetStringValue(mPad.symbol);
|
|
} else if (IsExtendsSystem()) {
|
|
GetExtends()->GetPad(mPad);
|
|
} else {
|
|
mPad.width = 0;
|
|
mPad.symbol.Truncate();
|
|
}
|
|
}
|
|
aResult = mPad;
|
|
}
|
|
|
|
/* virtual */ CounterStyle*
|
|
CustomCounterStyle::GetFallback()
|
|
{
|
|
if (!mFallback) {
|
|
const nsCSSValue& value = mRule->GetDesc(eCSSCounterDesc_Fallback);
|
|
if (value.UnitHasStringValue()) {
|
|
mFallback = mManager->BuildCounterStyle(
|
|
nsDependentString(value.GetStringBufferValue()));
|
|
} else if (IsExtendsSystem()) {
|
|
mFallback = GetExtends()->GetFallback();
|
|
} else {
|
|
mFallback = CounterStyleManager::GetDecimalStyle();
|
|
}
|
|
}
|
|
return mFallback;
|
|
}
|
|
|
|
/* virtual */ uint8_t
|
|
CustomCounterStyle::GetSpeakAs()
|
|
{
|
|
if (!(mFlags & FLAG_SPEAKAS_INITED)) {
|
|
ComputeSpeakAs();
|
|
}
|
|
return mSpeakAs;
|
|
}
|
|
|
|
/* virtual */ bool
|
|
CustomCounterStyle::UseNegativeSign()
|
|
{
|
|
if (mSystem == NS_STYLE_COUNTER_SYSTEM_EXTENDS) {
|
|
return GetExtendsRoot()->UseNegativeSign();
|
|
}
|
|
return SystemUsesNegativeSign(mSystem);
|
|
}
|
|
|
|
/* virtual */ void
|
|
CustomCounterStyle::CallFallbackStyle(CounterValue aOrdinal,
|
|
WritingMode aWritingMode,
|
|
nsSubstring& aResult,
|
|
bool& aIsRTL)
|
|
{
|
|
CounterStyle* fallback = GetFallback();
|
|
// If it recursively falls back to this counter style again,
|
|
// it will then fallback to decimal to break the loop.
|
|
mFallback = CounterStyleManager::GetDecimalStyle();
|
|
fallback->GetCounterText(aOrdinal, aWritingMode, aResult, aIsRTL);
|
|
mFallback = fallback;
|
|
}
|
|
|
|
/* virtual */ bool
|
|
CustomCounterStyle::GetInitialCounterText(CounterValue aOrdinal,
|
|
WritingMode aWritingMode,
|
|
nsSubstring& aResult,
|
|
bool& aIsRTL)
|
|
{
|
|
switch (mSystem) {
|
|
case NS_STYLE_COUNTER_SYSTEM_CYCLIC:
|
|
return GetCyclicCounterText(aOrdinal, aResult, GetSymbols());
|
|
case NS_STYLE_COUNTER_SYSTEM_FIXED: {
|
|
int32_t start = mRule->GetSystemArgument().GetIntValue();
|
|
return GetFixedCounterText(aOrdinal, aResult, start, GetSymbols());
|
|
}
|
|
case NS_STYLE_COUNTER_SYSTEM_SYMBOLIC:
|
|
return GetSymbolicCounterText(aOrdinal, aResult, GetSymbols());
|
|
case NS_STYLE_COUNTER_SYSTEM_ALPHABETIC:
|
|
return GetAlphabeticCounterText(aOrdinal, aResult, GetSymbols());
|
|
case NS_STYLE_COUNTER_SYSTEM_NUMERIC:
|
|
return GetNumericCounterText(aOrdinal, aResult, GetSymbols());
|
|
case NS_STYLE_COUNTER_SYSTEM_ADDITIVE:
|
|
return GetAdditiveCounterText(aOrdinal, aResult, GetAdditiveSymbols());
|
|
case NS_STYLE_COUNTER_SYSTEM_EXTENDS:
|
|
return GetExtendsRoot()->
|
|
GetInitialCounterText(aOrdinal, aWritingMode, aResult, aIsRTL);
|
|
default:
|
|
NS_NOTREACHED("Invalid system.");
|
|
return false;
|
|
}
|
|
}
|
|
|
|
const nsTArray<nsString>&
|
|
CustomCounterStyle::GetSymbols()
|
|
{
|
|
if (mSymbols.IsEmpty()) {
|
|
const nsCSSValue& values = mRule->GetDesc(eCSSCounterDesc_Symbols);
|
|
for (const nsCSSValueList* item = values.GetListValue();
|
|
item; item = item->mNext) {
|
|
nsString* symbol = mSymbols.AppendElement();
|
|
item->mValue.GetStringValue(*symbol);
|
|
}
|
|
mSymbols.Compact();
|
|
}
|
|
return mSymbols;
|
|
}
|
|
|
|
const nsTArray<AdditiveSymbol>&
|
|
CustomCounterStyle::GetAdditiveSymbols()
|
|
{
|
|
if (mAdditiveSymbols.IsEmpty()) {
|
|
const nsCSSValue& values = mRule->GetDesc(eCSSCounterDesc_AdditiveSymbols);
|
|
for (const nsCSSValuePairList* item = values.GetPairListValue();
|
|
item; item = item->mNext) {
|
|
AdditiveSymbol* symbol = mAdditiveSymbols.AppendElement();
|
|
symbol->weight = item->mXValue.GetIntValue();
|
|
item->mYValue.GetStringValue(symbol->symbol);
|
|
}
|
|
mAdditiveSymbols.Compact();
|
|
}
|
|
return mAdditiveSymbols;
|
|
}
|
|
|
|
// This method is used to provide the computed value for 'auto'.
|
|
uint8_t
|
|
CustomCounterStyle::GetSpeakAsAutoValue()
|
|
{
|
|
uint8_t system = mSystem;
|
|
if (IsExtendsSystem()) {
|
|
CounterStyle* root = GetExtendsRoot();
|
|
if (!root->IsCustomStyle()) {
|
|
// It is safe to call GetSpeakAs on non-custom style.
|
|
return root->GetSpeakAs();
|
|
}
|
|
system = static_cast<CustomCounterStyle*>(root)->mSystem;
|
|
}
|
|
return GetDefaultSpeakAsForSystem(system);
|
|
}
|
|
|
|
// This method corresponds to the first stage of computation of the
|
|
// value of speak-as. It will extract the value from the rule and
|
|
// possibly recursively call itself on the extended style to figure
|
|
// out the raw value. To keep things clear, this method is designed to
|
|
// have no side effects (but functions it calls may still affect other
|
|
// fields in the style.)
|
|
void
|
|
CustomCounterStyle::ComputeRawSpeakAs(uint8_t& aSpeakAs,
|
|
CounterStyle*& aSpeakAsCounter)
|
|
{
|
|
NS_ASSERTION(!(mFlags & FLAG_SPEAKAS_INITED),
|
|
"ComputeRawSpeakAs is called with speak-as inited.");
|
|
|
|
const nsCSSValue& value = mRule->GetDesc(eCSSCounterDesc_SpeakAs);
|
|
switch (value.GetUnit()) {
|
|
case eCSSUnit_Auto:
|
|
aSpeakAs = GetSpeakAsAutoValue();
|
|
break;
|
|
case eCSSUnit_Enumerated:
|
|
aSpeakAs = value.GetIntValue();
|
|
break;
|
|
case eCSSUnit_Ident:
|
|
aSpeakAs = NS_STYLE_COUNTER_SPEAKAS_OTHER;
|
|
aSpeakAsCounter = mManager->BuildCounterStyle(
|
|
nsDependentString(value.GetStringBufferValue()));
|
|
break;
|
|
case eCSSUnit_Null: {
|
|
if (!IsExtendsSystem()) {
|
|
aSpeakAs = GetSpeakAsAutoValue();
|
|
} else {
|
|
CounterStyle* extended = GetExtends();
|
|
if (!extended->IsCustomStyle()) {
|
|
// It is safe to call GetSpeakAs on non-custom style.
|
|
aSpeakAs = extended->GetSpeakAs();
|
|
} else {
|
|
CustomCounterStyle* custom =
|
|
static_cast<CustomCounterStyle*>(extended);
|
|
if (!(custom->mFlags & FLAG_SPEAKAS_INITED)) {
|
|
custom->ComputeRawSpeakAs(aSpeakAs, aSpeakAsCounter);
|
|
} else {
|
|
aSpeakAs = custom->mSpeakAs;
|
|
aSpeakAsCounter = custom->mSpeakAsCounter;
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
default:
|
|
NS_NOTREACHED("Invalid speak-as value");
|
|
}
|
|
}
|
|
|
|
// This method corresponds to the second stage of getting speak-as
|
|
// related values. It will recursively figure out the final value of
|
|
// mSpeakAs and mSpeakAsCounter. This method returns nullptr if the
|
|
// caller is in a loop, and the root counter style in the chain
|
|
// otherwise. It use the same loop detection algorithm as
|
|
// CustomCounterStyle::ComputeExtends, see comments before that
|
|
// method for more details.
|
|
CounterStyle*
|
|
CustomCounterStyle::ComputeSpeakAs()
|
|
{
|
|
if (mFlags & FLAG_SPEAKAS_INITED) {
|
|
if (mSpeakAs == NS_STYLE_COUNTER_SPEAKAS_OTHER) {
|
|
return mSpeakAsCounter;
|
|
}
|
|
return this;
|
|
}
|
|
|
|
if (mFlags & FLAG_SPEAKAS_VISITED) {
|
|
// loop detected
|
|
mFlags |= FLAG_SPEAKAS_LOOP;
|
|
return nullptr;
|
|
}
|
|
|
|
CounterStyle* speakAsCounter;
|
|
ComputeRawSpeakAs(mSpeakAs, speakAsCounter);
|
|
|
|
bool inLoop = false;
|
|
if (mSpeakAs != NS_STYLE_COUNTER_SPEAKAS_OTHER) {
|
|
mSpeakAsCounter = nullptr;
|
|
} else if (!speakAsCounter->IsCustomStyle()) {
|
|
mSpeakAsCounter = speakAsCounter;
|
|
} else {
|
|
mFlags |= FLAG_SPEAKAS_VISITED;
|
|
CounterStyle* target =
|
|
static_cast<CustomCounterStyle*>(speakAsCounter)->ComputeSpeakAs();
|
|
mFlags &= ~FLAG_SPEAKAS_VISITED;
|
|
|
|
if (target) {
|
|
NS_ASSERTION(!(mFlags & FLAG_SPEAKAS_LOOP),
|
|
"Invalid state for speak-as loop detecting");
|
|
mSpeakAsCounter = target;
|
|
} else {
|
|
mSpeakAs = GetSpeakAsAutoValue();
|
|
mSpeakAsCounter = nullptr;
|
|
if (mFlags & FLAG_SPEAKAS_LOOP) {
|
|
mFlags &= ~FLAG_SPEAKAS_LOOP;
|
|
} else {
|
|
inLoop = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
mFlags |= FLAG_SPEAKAS_INITED;
|
|
if (inLoop) {
|
|
return nullptr;
|
|
}
|
|
return mSpeakAsCounter ? mSpeakAsCounter : this;
|
|
}
|
|
|
|
// This method will recursively figure out mExtends in the whole chain.
|
|
// It will return nullptr if the caller is in a loop, and return this
|
|
// otherwise. To detect the loop, this method marks the style VISITED
|
|
// before the recursive call. When a VISITED style is reached again, the
|
|
// loop is detected, and flag LOOP will be marked on the first style in
|
|
// loop. mExtends of all counter styles in loop will be set to decimal
|
|
// according to the spec.
|
|
CounterStyle*
|
|
CustomCounterStyle::ComputeExtends()
|
|
{
|
|
if (!IsExtendsSystem() || mExtends) {
|
|
return this;
|
|
}
|
|
if (mFlags & FLAG_EXTENDS_VISITED) {
|
|
// loop detected
|
|
mFlags |= FLAG_EXTENDS_LOOP;
|
|
return nullptr;
|
|
}
|
|
|
|
const nsCSSValue& value = mRule->GetSystemArgument();
|
|
CounterStyle* nextCounter = mManager->BuildCounterStyle(
|
|
nsDependentString(value.GetStringBufferValue()));
|
|
CounterStyle* target = nextCounter;
|
|
if (nextCounter->IsCustomStyle()) {
|
|
mFlags |= FLAG_EXTENDS_VISITED;
|
|
target = static_cast<CustomCounterStyle*>(nextCounter)->ComputeExtends();
|
|
mFlags &= ~FLAG_EXTENDS_VISITED;
|
|
}
|
|
|
|
if (target) {
|
|
NS_ASSERTION(!(mFlags & FLAG_EXTENDS_LOOP),
|
|
"Invalid state for extends loop detecting");
|
|
mExtends = nextCounter;
|
|
return this;
|
|
} else {
|
|
mExtends = CounterStyleManager::GetDecimalStyle();
|
|
if (mFlags & FLAG_EXTENDS_LOOP) {
|
|
mFlags &= ~FLAG_EXTENDS_LOOP;
|
|
return this;
|
|
} else {
|
|
return nullptr;
|
|
}
|
|
}
|
|
}
|
|
|
|
CounterStyle*
|
|
CustomCounterStyle::GetExtends()
|
|
{
|
|
if (!mExtends) {
|
|
// Any extends loop will be eliminated in the method below.
|
|
ComputeExtends();
|
|
}
|
|
return mExtends;
|
|
}
|
|
|
|
CounterStyle*
|
|
CustomCounterStyle::GetExtendsRoot()
|
|
{
|
|
if (!mExtendsRoot) {
|
|
CounterStyle* extended = GetExtends();
|
|
mExtendsRoot = extended;
|
|
if (extended->IsCustomStyle()) {
|
|
CustomCounterStyle* custom = static_cast<CustomCounterStyle*>(extended);
|
|
if (custom->IsExtendsSystem()) {
|
|
// This will make mExtendsRoot in the whole extends chain be
|
|
// set recursively, which could save work when part of a chain
|
|
// is shared by multiple counter styles.
|
|
mExtendsRoot = custom->GetExtendsRoot();
|
|
}
|
|
}
|
|
}
|
|
return mExtendsRoot;
|
|
}
|
|
|
|
AnonymousCounterStyle::AnonymousCounterStyle(const nsSubstring& aContent)
|
|
: CounterStyle(NS_STYLE_LIST_STYLE_CUSTOM)
|
|
, mSingleString(true)
|
|
, mSystem(NS_STYLE_COUNTER_SYSTEM_CYCLIC)
|
|
{
|
|
mSymbols.SetCapacity(1);
|
|
mSymbols.AppendElement(aContent);
|
|
}
|
|
|
|
AnonymousCounterStyle::AnonymousCounterStyle(const nsCSSValue::Array* aParams)
|
|
: CounterStyle(NS_STYLE_LIST_STYLE_CUSTOM)
|
|
, mSingleString(false)
|
|
, mSystem(aParams->Item(0).GetIntValue())
|
|
{
|
|
for (const nsCSSValueList* item = aParams->Item(1).GetListValue();
|
|
item; item = item->mNext) {
|
|
item->mValue.GetStringValue(*mSymbols.AppendElement());
|
|
}
|
|
mSymbols.Compact();
|
|
}
|
|
|
|
/* virtual */ void
|
|
AnonymousCounterStyle::GetPrefix(nsAString& aResult)
|
|
{
|
|
aResult.Truncate();
|
|
}
|
|
|
|
/* virtual */ void
|
|
AnonymousCounterStyle::GetSuffix(nsAString& aResult)
|
|
{
|
|
if (IsSingleString()) {
|
|
aResult.Truncate();
|
|
} else {
|
|
aResult = ' ';
|
|
}
|
|
}
|
|
|
|
/* virtual */ bool
|
|
AnonymousCounterStyle::IsBullet()
|
|
{
|
|
switch (mSystem) {
|
|
case NS_STYLE_COUNTER_SYSTEM_CYCLIC:
|
|
// Only use ::-moz-list-bullet for cyclic system
|
|
return true;
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/* virtual */ void
|
|
AnonymousCounterStyle::GetNegative(NegativeType& aResult)
|
|
{
|
|
aResult.before.AssignLiteral(MOZ_UTF16("-"));
|
|
aResult.after.Truncate();
|
|
}
|
|
|
|
/* virtual */ bool
|
|
AnonymousCounterStyle::IsOrdinalInRange(CounterValue aOrdinal)
|
|
{
|
|
switch (mSystem) {
|
|
case NS_STYLE_COUNTER_SYSTEM_CYCLIC:
|
|
case NS_STYLE_COUNTER_SYSTEM_NUMERIC:
|
|
case NS_STYLE_COUNTER_SYSTEM_FIXED:
|
|
return true;
|
|
case NS_STYLE_COUNTER_SYSTEM_ALPHABETIC:
|
|
case NS_STYLE_COUNTER_SYSTEM_SYMBOLIC:
|
|
return aOrdinal >= 1;
|
|
default:
|
|
NS_NOTREACHED("Invalid system.");
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/* virtual */ bool
|
|
AnonymousCounterStyle::IsOrdinalInAutoRange(CounterValue aOrdinal)
|
|
{
|
|
return AnonymousCounterStyle::IsOrdinalInRange(aOrdinal);
|
|
}
|
|
|
|
/* virtual */ void
|
|
AnonymousCounterStyle::GetPad(PadType& aResult)
|
|
{
|
|
aResult.width = 0;
|
|
aResult.symbol.Truncate();
|
|
}
|
|
|
|
/* virtual */ CounterStyle*
|
|
AnonymousCounterStyle::GetFallback()
|
|
{
|
|
return CounterStyleManager::GetDecimalStyle();
|
|
}
|
|
|
|
/* virtual */ uint8_t
|
|
AnonymousCounterStyle::GetSpeakAs()
|
|
{
|
|
return GetDefaultSpeakAsForSystem(mSystem);
|
|
}
|
|
|
|
/* virtual */ bool
|
|
AnonymousCounterStyle::UseNegativeSign()
|
|
{
|
|
return SystemUsesNegativeSign(mSystem);
|
|
}
|
|
|
|
/* virtual */ bool
|
|
AnonymousCounterStyle::GetInitialCounterText(CounterValue aOrdinal,
|
|
WritingMode aWritingMode,
|
|
nsAString& aResult,
|
|
bool& aIsRTL)
|
|
{
|
|
switch (mSystem) {
|
|
case NS_STYLE_COUNTER_SYSTEM_CYCLIC:
|
|
return GetCyclicCounterText(aOrdinal, aResult, mSymbols);
|
|
case NS_STYLE_COUNTER_SYSTEM_FIXED:
|
|
return GetFixedCounterText(aOrdinal, aResult, 1, mSymbols);
|
|
case NS_STYLE_COUNTER_SYSTEM_SYMBOLIC:
|
|
return GetSymbolicCounterText(aOrdinal, aResult, mSymbols);
|
|
case NS_STYLE_COUNTER_SYSTEM_ALPHABETIC:
|
|
return GetAlphabeticCounterText(aOrdinal, aResult, mSymbols);
|
|
case NS_STYLE_COUNTER_SYSTEM_NUMERIC:
|
|
return GetNumericCounterText(aOrdinal, aResult, mSymbols);
|
|
default:
|
|
NS_NOTREACHED("Invalid system.");
|
|
return false;
|
|
}
|
|
}
|
|
|
|
bool
|
|
CounterStyle::IsDependentStyle() const
|
|
{
|
|
switch (mStyle) {
|
|
// CustomCounterStyle
|
|
case NS_STYLE_LIST_STYLE_CUSTOM:
|
|
// DependentBuiltinCounterStyle
|
|
case NS_STYLE_LIST_STYLE_JAPANESE_INFORMAL:
|
|
case NS_STYLE_LIST_STYLE_JAPANESE_FORMAL:
|
|
case NS_STYLE_LIST_STYLE_KOREAN_HANGUL_FORMAL:
|
|
case NS_STYLE_LIST_STYLE_KOREAN_HANJA_INFORMAL:
|
|
case NS_STYLE_LIST_STYLE_KOREAN_HANJA_FORMAL:
|
|
case NS_STYLE_LIST_STYLE_SIMP_CHINESE_INFORMAL:
|
|
case NS_STYLE_LIST_STYLE_SIMP_CHINESE_FORMAL:
|
|
case NS_STYLE_LIST_STYLE_TRAD_CHINESE_INFORMAL:
|
|
case NS_STYLE_LIST_STYLE_TRAD_CHINESE_FORMAL:
|
|
return true;
|
|
|
|
// BuiltinCounterStyle
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
static int32_t
|
|
CountGraphemeClusters(const nsSubstring& aText)
|
|
{
|
|
using mozilla::unicode::ClusterIterator;
|
|
ClusterIterator iter(aText.Data(), aText.Length());
|
|
int32_t result = 0;
|
|
while (!iter.AtEnd()) {
|
|
++result;
|
|
iter.Next();
|
|
}
|
|
return result;
|
|
}
|
|
|
|
void
|
|
CounterStyle::GetCounterText(CounterValue aOrdinal,
|
|
WritingMode aWritingMode,
|
|
nsSubstring& aResult,
|
|
bool& aIsRTL)
|
|
{
|
|
bool success = IsOrdinalInRange(aOrdinal);
|
|
aIsRTL = false;
|
|
|
|
if (success) {
|
|
// generate initial representation
|
|
bool useNegativeSign = UseNegativeSign();
|
|
nsAutoString initialText;
|
|
CounterValue ordinal;
|
|
if (!useNegativeSign) {
|
|
ordinal = aOrdinal;
|
|
} else {
|
|
CheckedInt<CounterValue> absolute(Abs(aOrdinal));
|
|
ordinal = absolute.isValid() ?
|
|
absolute.value() : std::numeric_limits<CounterValue>::max();
|
|
}
|
|
success = GetInitialCounterText(
|
|
ordinal, aWritingMode, initialText, aIsRTL);
|
|
|
|
// add pad & negative, build the final result
|
|
if (success) {
|
|
PadType pad;
|
|
GetPad(pad);
|
|
// We have to calculate the difference here since suffix part of negative
|
|
// sign may be appended to initialText later.
|
|
int32_t diff = pad.width - CountGraphemeClusters(initialText);
|
|
aResult.Truncate();
|
|
if (useNegativeSign && aOrdinal < 0) {
|
|
NegativeType negative;
|
|
GetNegative(negative);
|
|
aResult.Append(negative.before);
|
|
// There is nothing between the suffix part of negative and initial
|
|
// representation, so we append it directly here.
|
|
initialText.Append(negative.after);
|
|
}
|
|
if (diff > 0) {
|
|
auto length = pad.symbol.Length();
|
|
if (diff > LENGTH_LIMIT || length > LENGTH_LIMIT ||
|
|
diff * length > LENGTH_LIMIT) {
|
|
success = false;
|
|
} else if (length > 0) {
|
|
for (int32_t i = 0; i < diff; ++i) {
|
|
aResult.Append(pad.symbol);
|
|
}
|
|
}
|
|
}
|
|
if (success) {
|
|
aResult.Append(initialText);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!success) {
|
|
CallFallbackStyle(aOrdinal, aWritingMode, aResult, aIsRTL);
|
|
}
|
|
}
|
|
|
|
/* virtual */ void
|
|
CounterStyle::GetSpokenCounterText(CounterValue aOrdinal,
|
|
WritingMode aWritingMode,
|
|
nsSubstring& aResult,
|
|
bool& aIsBullet)
|
|
{
|
|
bool isRTL; // we don't care about direction for spoken text
|
|
aIsBullet = false;
|
|
switch (GetSpeakAs()) {
|
|
case NS_STYLE_COUNTER_SPEAKAS_BULLETS:
|
|
aResult.Assign(kDiscCharacter);
|
|
aIsBullet = true;
|
|
break;
|
|
case NS_STYLE_COUNTER_SPEAKAS_NUMBERS:
|
|
DecimalToText(aOrdinal, aResult);
|
|
break;
|
|
case NS_STYLE_COUNTER_SPEAKAS_SPELL_OUT:
|
|
// we currently do not actually support 'spell-out',
|
|
// so 'words' is used instead.
|
|
case NS_STYLE_COUNTER_SPEAKAS_WORDS:
|
|
GetCounterText(aOrdinal, WritingMode(), aResult, isRTL);
|
|
break;
|
|
case NS_STYLE_COUNTER_SPEAKAS_OTHER:
|
|
// This should be processed by CustomCounterStyle
|
|
NS_NOTREACHED("Invalid speak-as value");
|
|
break;
|
|
default:
|
|
NS_NOTREACHED("Unknown speak-as value");
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* virtual */ void
|
|
CounterStyle::CallFallbackStyle(CounterValue aOrdinal,
|
|
WritingMode aWritingMode,
|
|
nsAString& aResult,
|
|
bool& aIsRTL)
|
|
{
|
|
GetFallback()->GetCounterText(aOrdinal, aWritingMode, aResult, aIsRTL);
|
|
}
|
|
|
|
static BuiltinCounterStyle gBuiltinStyleTable[NS_STYLE_LIST_STYLE__MAX];
|
|
|
|
CounterStyleManager::CounterStyleManager(nsPresContext* aPresContext)
|
|
: mPresContext(aPresContext)
|
|
{
|
|
// Insert the static styles into cache table
|
|
mCacheTable.Put(NS_LITERAL_STRING("none"), GetNoneStyle());
|
|
mCacheTable.Put(NS_LITERAL_STRING("decimal"), GetDecimalStyle());
|
|
}
|
|
|
|
CounterStyleManager::~CounterStyleManager()
|
|
{
|
|
MOZ_ASSERT(!mPresContext, "Disconnect should have been called");
|
|
}
|
|
|
|
/* static */ void
|
|
CounterStyleManager::InitializeBuiltinCounterStyles()
|
|
{
|
|
for (uint32_t i = 0; i < NS_STYLE_LIST_STYLE__MAX; ++i) {
|
|
gBuiltinStyleTable[i].mStyle = i;
|
|
}
|
|
}
|
|
|
|
void
|
|
CounterStyleManager::Disconnect()
|
|
{
|
|
#ifdef DEBUG
|
|
for (auto iter = mCacheTable.Iter(); !iter.Done(); iter.Next()) {
|
|
CounterStyle* style = iter.UserData();
|
|
style->AddRef();
|
|
auto refcnt = style->Release();
|
|
NS_ASSERTION(!style->IsDependentStyle() || refcnt == 1,
|
|
"Counter style is still referenced by other objects.");
|
|
}
|
|
#endif
|
|
mCacheTable.Clear();
|
|
mPresContext = nullptr;
|
|
}
|
|
|
|
CounterStyle*
|
|
CounterStyleManager::BuildCounterStyle(const nsSubstring& aName)
|
|
{
|
|
CounterStyle* data = mCacheTable.GetWeak(aName);
|
|
if (data) {
|
|
return data;
|
|
}
|
|
|
|
// It is intentional that the predefined names are case-insensitive
|
|
// but the user-defined names case-sensitive.
|
|
// XXXheycam ServoStyleSets do not support custom counter styles yet.
|
|
StyleSetHandle styleSet = mPresContext->StyleSet();
|
|
NS_ASSERTION(styleSet->IsGecko(),
|
|
"stylo: ServoStyleSets do not support custom counter "
|
|
"styles yet");
|
|
nsCSSCounterStyleRule* rule = styleSet->IsGecko() ?
|
|
styleSet->AsGecko()->CounterStyleRuleForName(aName) : nullptr;
|
|
if (rule) {
|
|
data = new (mPresContext) CustomCounterStyle(this, rule);
|
|
} else {
|
|
int32_t type;
|
|
nsCSSKeyword keyword = nsCSSKeywords::LookupKeyword(aName);
|
|
if (nsCSSProps::FindKeyword(keyword, nsCSSProps::kListStyleKTable, type)) {
|
|
if (gBuiltinStyleTable[type].IsDependentStyle()) {
|
|
data = new (mPresContext) DependentBuiltinCounterStyle(type, this);
|
|
} else {
|
|
data = GetBuiltinStyle(type);
|
|
}
|
|
}
|
|
}
|
|
if (!data) {
|
|
data = GetDecimalStyle();
|
|
}
|
|
mCacheTable.Put(aName, data);
|
|
return data;
|
|
}
|
|
|
|
/* static */ CounterStyle*
|
|
CounterStyleManager::GetBuiltinStyle(int32_t aStyle)
|
|
{
|
|
MOZ_ASSERT(0 <= aStyle && aStyle < NS_STYLE_LIST_STYLE__MAX,
|
|
"Require a valid builtin style constant");
|
|
MOZ_ASSERT(!gBuiltinStyleTable[aStyle].IsDependentStyle(),
|
|
"Cannot get dependent builtin style");
|
|
return &gBuiltinStyleTable[aStyle];
|
|
}
|
|
|
|
bool
|
|
CounterStyleManager::NotifyRuleChanged()
|
|
{
|
|
bool changed = false;
|
|
nsTArray<RefPtr<CounterStyle>> kungFuDeathGrip;
|
|
for (auto iter = mCacheTable.Iter(); !iter.Done(); iter.Next()) {
|
|
RefPtr<CounterStyle>& style = iter.Data();
|
|
bool toBeUpdated = false;
|
|
bool toBeRemoved = false;
|
|
// XXXheycam ServoStyleSets do not support custom counter styles yet.
|
|
StyleSetHandle styleSet = mPresContext->StyleSet();
|
|
NS_ASSERTION(styleSet->IsGecko(),
|
|
"stylo: ServoStyleSets do not support custom counter "
|
|
"styles yet");
|
|
nsCSSCounterStyleRule* newRule = styleSet->IsGecko() ?
|
|
styleSet->AsGecko()->CounterStyleRuleForName(iter.Key()) : nullptr;
|
|
if (!newRule) {
|
|
if (style->IsCustomStyle()) {
|
|
toBeRemoved = true;
|
|
}
|
|
} else {
|
|
if (!style->IsCustomStyle()) {
|
|
toBeRemoved = true;
|
|
} else {
|
|
auto custom = static_cast<CustomCounterStyle*>(style.get());
|
|
if (custom->GetRule() != newRule) {
|
|
toBeRemoved = true;
|
|
} else if (custom->GetRuleGeneration() != newRule->GetGeneration()) {
|
|
toBeUpdated = true;
|
|
custom->ResetCachedData();
|
|
}
|
|
}
|
|
}
|
|
changed = changed || toBeUpdated || toBeRemoved;
|
|
if (toBeRemoved) {
|
|
if (style->IsDependentStyle()) {
|
|
if (style->IsCustomStyle()) {
|
|
// Since |style| is being removed from mCacheTable, it won't be
|
|
// visited by our post-removal iteration. So, we have to give it a
|
|
// manual ResetDependentData() call. (This only really matters if
|
|
// something else is holding a reference and keeping it alive.)
|
|
static_cast<CustomCounterStyle*>(style.get())->ResetDependentData();
|
|
}
|
|
// The object has to be held here so that it will not be released
|
|
// before all pointers that refer to it are reset. It will be released
|
|
// when kungFuDeathGrip goes out of scope at the end of this function.
|
|
kungFuDeathGrip.AppendElement(style);
|
|
}
|
|
iter.Remove();
|
|
}
|
|
}
|
|
|
|
if (changed) {
|
|
for (auto iter = mCacheTable.Iter(); !iter.Done(); iter.Next()) {
|
|
CounterStyle* style = iter.UserData();
|
|
if (style->IsCustomStyle()) {
|
|
CustomCounterStyle* custom = static_cast<CustomCounterStyle*>(style);
|
|
custom->ResetDependentData();
|
|
}
|
|
// There is no dependent data cached in DependentBuiltinCounterStyle
|
|
// instances, so we don't need to reset their data.
|
|
}
|
|
}
|
|
return changed;
|
|
}
|
|
|
|
} // namespace mozilla
|