forked from mirrors/gecko-dev
a80ffc72ff
Doing it during layout instead. This also has the nice side-effect of no longer needing to do a full restyle when counter-style rules are inserted. Differential Revision: https://phabricator.services.mozilla.com/D18343
1889 lines
63 KiB
C++
1889 lines
63 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "CounterStyleManager.h"
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#include "mozilla/ArenaObjectID.h"
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#include "mozilla/ArrayUtils.h"
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#include "mozilla/CheckedInt.h"
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#include "mozilla/MathAlgorithms.h"
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#include "mozilla/Types.h"
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#include "mozilla/WritingModes.h"
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#include "nsPresContext.h"
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#include "nsString.h"
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#include "nsTArray.h"
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#include "nsTHashtable.h"
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#include "nsUnicodeProperties.h"
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#include "mozilla/ServoBindings.h"
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#include "mozilla/ServoStyleSet.h"
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namespace mozilla {
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struct AdditiveSymbol {
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CounterValue weight;
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nsString symbol;
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};
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struct NegativeType {
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nsString before, after;
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};
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struct PadType {
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int32_t width;
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nsString symbol;
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};
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// This limitation will be applied to some systems, and pad descriptor.
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// Any initial representation generated by symbolic or additive which is
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// longer than this limitation will be dropped. If any pad is longer
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// than this, the whole counter text will be dropped as well.
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// The spec requires user agents to support at least 60 Unicode code-
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// points for counter text. However, this constant only limits the
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// length in 16-bit units. So it has to be at least 120, since code-
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// points outside the BMP will need 2 16-bit units.
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#define LENGTH_LIMIT 150
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static bool GetCyclicCounterText(CounterValue aOrdinal, nsAString& aResult,
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const nsTArray<nsString>& aSymbols) {
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MOZ_ASSERT(aSymbols.Length() >= 1, "No symbol available for cyclic counter.");
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auto n = aSymbols.Length();
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CounterValue index = (aOrdinal - 1) % n;
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aResult = aSymbols[index >= 0 ? index : index + n];
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return true;
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}
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static bool GetFixedCounterText(CounterValue aOrdinal, nsAString& aResult,
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CounterValue aStart,
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const nsTArray<nsString>& aSymbols) {
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CounterValue index = aOrdinal - aStart;
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if (index >= 0 && index < CounterValue(aSymbols.Length())) {
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aResult = aSymbols[index];
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return true;
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} else {
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return false;
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}
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}
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static bool GetSymbolicCounterText(CounterValue aOrdinal, nsAString& aResult,
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const nsTArray<nsString>& aSymbols) {
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MOZ_ASSERT(aSymbols.Length() >= 1,
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"No symbol available for symbolic counter.");
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MOZ_ASSERT(aOrdinal >= 0, "Invalid ordinal.");
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if (aOrdinal == 0) {
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return false;
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}
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aResult.Truncate();
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auto n = aSymbols.Length();
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const nsString& symbol = aSymbols[(aOrdinal - 1) % n];
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size_t len = (aOrdinal + n - 1) / n;
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auto symbolLength = symbol.Length();
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if (symbolLength > 0) {
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if (len > LENGTH_LIMIT || symbolLength > LENGTH_LIMIT ||
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len * symbolLength > LENGTH_LIMIT) {
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return false;
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}
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for (size_t i = 0; i < len; ++i) {
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aResult.Append(symbol);
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}
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}
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return true;
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}
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static bool GetAlphabeticCounterText(CounterValue aOrdinal, nsAString& aResult,
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const nsTArray<nsString>& aSymbols) {
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MOZ_ASSERT(aSymbols.Length() >= 2, "Too few symbols for alphabetic counter.");
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MOZ_ASSERT(aOrdinal >= 0, "Invalid ordinal.");
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if (aOrdinal == 0) {
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return false;
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}
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auto n = aSymbols.Length();
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// The precise length of this array should be
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// ceil(log((double) aOrdinal / n * (n - 1) + 1) / log(n)).
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// The max length is slightly smaller than which defined below.
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AutoTArray<int32_t, std::numeric_limits<CounterValue>::digits> indexes;
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while (aOrdinal > 0) {
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--aOrdinal;
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indexes.AppendElement(aOrdinal % n);
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aOrdinal /= n;
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}
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aResult.Truncate();
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for (auto i = indexes.Length(); i > 0; --i) {
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aResult.Append(aSymbols[indexes[i - 1]]);
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}
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return true;
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}
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static bool GetNumericCounterText(CounterValue aOrdinal, nsAString& aResult,
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const nsTArray<nsString>& aSymbols) {
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MOZ_ASSERT(aSymbols.Length() >= 2, "Too few symbols for numeric counter.");
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MOZ_ASSERT(aOrdinal >= 0, "Invalid ordinal.");
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if (aOrdinal == 0) {
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aResult = aSymbols[0];
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return true;
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}
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auto n = aSymbols.Length();
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AutoTArray<int32_t, std::numeric_limits<CounterValue>::digits> indexes;
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while (aOrdinal > 0) {
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indexes.AppendElement(aOrdinal % n);
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aOrdinal /= n;
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}
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aResult.Truncate();
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for (auto i = indexes.Length(); i > 0; --i) {
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aResult.Append(aSymbols[indexes[i - 1]]);
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}
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return true;
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}
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static bool GetAdditiveCounterText(CounterValue aOrdinal, nsAString& aResult,
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const nsTArray<AdditiveSymbol>& aSymbols) {
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MOZ_ASSERT(aOrdinal >= 0, "Invalid ordinal.");
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if (aOrdinal == 0) {
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const AdditiveSymbol& last = aSymbols.LastElement();
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if (last.weight == 0) {
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aResult = last.symbol;
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return true;
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}
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return false;
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}
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aResult.Truncate();
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size_t length = 0;
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for (size_t i = 0, iEnd = aSymbols.Length(); i < iEnd; ++i) {
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const AdditiveSymbol& symbol = aSymbols[i];
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if (symbol.weight == 0) {
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break;
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}
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CounterValue times = aOrdinal / symbol.weight;
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if (times > 0) {
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auto symbolLength = symbol.symbol.Length();
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if (symbolLength > 0) {
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length += times * symbolLength;
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if (times > LENGTH_LIMIT || symbolLength > LENGTH_LIMIT ||
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length > LENGTH_LIMIT) {
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return false;
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}
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for (CounterValue j = 0; j < times; ++j) {
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aResult.Append(symbol.symbol);
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}
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}
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aOrdinal -= times * symbol.weight;
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}
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}
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return aOrdinal == 0;
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}
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static bool DecimalToText(CounterValue aOrdinal, nsAString& aResult) {
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aResult.AppendInt(aOrdinal);
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return true;
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}
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// We know cjk-ideographic need 31 characters to display 99,999,999,999,999,999
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// georgian needs 6 at most
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// armenian needs 12 at most
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// hebrew may need more...
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#define NUM_BUF_SIZE 34
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enum CJKIdeographicLang { CHINESE, KOREAN, JAPANESE };
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struct CJKIdeographicData {
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char16_t digit[10];
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char16_t unit[3];
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char16_t unit10K[2];
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uint8_t lang;
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bool informal;
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};
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static const CJKIdeographicData gDataJapaneseInformal = {
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{0x3007, 0x4e00, 0x4e8c, 0x4e09, 0x56db, 0x4e94, 0x516d, 0x4e03, 0x516b,
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0x4e5d}, // digit
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{0x5341, 0x767e, 0x5343}, // unit
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{0x4e07, 0x5104}, // unit10K
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JAPANESE, // lang
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true // informal
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};
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static const CJKIdeographicData gDataJapaneseFormal = {
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{0x96f6, 0x58f1, 0x5f10, 0x53c2, 0x56db, 0x4f0d, 0x516d, 0x4e03, 0x516b,
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0x4e5d}, // digit
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{0x62fe, 0x767e, 0x9621}, // unit
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{0x842c, 0x5104}, // unit10K
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JAPANESE, // lang
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false // informal
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};
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static const CJKIdeographicData gDataKoreanHangulFormal = {
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{0xc601, 0xc77c, 0xc774, 0xc0bc, 0xc0ac, 0xc624, 0xc721, 0xce60, 0xd314,
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0xad6c}, // digit
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{0xc2ed, 0xbc31, 0xcc9c}, // unit
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{0xb9cc, 0xc5b5}, // unit10K
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KOREAN, // lang
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false // informal
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};
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static const CJKIdeographicData gDataKoreanHanjaInformal = {
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{0x96f6, 0x4e00, 0x4e8c, 0x4e09, 0x56db, 0x4e94, 0x516d, 0x4e03, 0x516b,
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0x4e5d}, // digit
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{0x5341, 0x767e, 0x5343}, // unit
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{0x842c, 0x5104}, // unit10K
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KOREAN, // lang
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true // informal
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};
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static const CJKIdeographicData gDataKoreanHanjaFormal = {
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{0x96f6, 0x58f9, 0x8cb3, 0x53c3, 0x56db, 0x4e94, 0x516d, 0x4e03, 0x516b,
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0x4e5d}, // digit
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{0x62fe, 0x767e, 0x4edf}, // unit
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{0x842c, 0x5104}, // unit10K
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KOREAN, // lang
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false // informal
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};
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static const CJKIdeographicData gDataSimpChineseInformal = {
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{0x96f6, 0x4e00, 0x4e8c, 0x4e09, 0x56db, 0x4e94, 0x516d, 0x4e03, 0x516b,
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0x4e5d}, // digit
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{0x5341, 0x767e, 0x5343}, // unit
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{0x4e07, 0x4ebf}, // unit10K
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CHINESE, // lang
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true // informal
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};
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static const CJKIdeographicData gDataSimpChineseFormal = {
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{0x96f6, 0x58f9, 0x8d30, 0x53c1, 0x8086, 0x4f0d, 0x9646, 0x67d2, 0x634c,
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0x7396}, // digit
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{0x62fe, 0x4f70, 0x4edf}, // unit
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{0x4e07, 0x4ebf}, // unit10K
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CHINESE, // lang
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false // informal
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};
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static const CJKIdeographicData gDataTradChineseInformal = {
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{0x96f6, 0x4e00, 0x4e8c, 0x4e09, 0x56db, 0x4e94, 0x516d, 0x4e03, 0x516b,
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0x4e5d}, // digit
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{0x5341, 0x767e, 0x5343}, // unit
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{0x842c, 0x5104}, // unit10K
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CHINESE, // lang
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true // informal
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};
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static const CJKIdeographicData gDataTradChineseFormal = {
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{0x96f6, 0x58f9, 0x8cb3, 0x53c3, 0x8086, 0x4f0d, 0x9678, 0x67d2, 0x634c,
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0x7396}, // digit
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{0x62fe, 0x4f70, 0x4edf}, // unit
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{0x842c, 0x5104}, // unit10K
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CHINESE, // lang
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false // informal
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};
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static bool CJKIdeographicToText(CounterValue aOrdinal, nsAString& aResult,
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const CJKIdeographicData& data) {
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NS_ASSERTION(aOrdinal >= 0, "Only accept non-negative ordinal");
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char16_t buf[NUM_BUF_SIZE];
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int32_t idx = NUM_BUF_SIZE;
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int32_t pos = 0;
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bool needZero = (aOrdinal == 0);
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int32_t unitidx = 0, unit10Kidx = 0;
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do {
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unitidx = pos % 4;
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if (unitidx == 0) {
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unit10Kidx = pos / 4;
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}
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auto cur = static_cast<MakeUnsigned<CounterValue>::Type>(aOrdinal) % 10;
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if (cur == 0) {
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if (needZero) {
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needZero = false;
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buf[--idx] = data.digit[0];
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}
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} else {
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if (data.lang == CHINESE) {
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needZero = true;
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}
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if (unit10Kidx != 0) {
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if (data.lang == KOREAN && idx != NUM_BUF_SIZE) {
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buf[--idx] = ' ';
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}
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buf[--idx] = data.unit10K[unit10Kidx - 1];
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}
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if (unitidx != 0) {
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buf[--idx] = data.unit[unitidx - 1];
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}
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if (cur != 1) {
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buf[--idx] = data.digit[cur];
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} else {
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bool needOne = true;
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if (data.informal) {
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switch (data.lang) {
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case CHINESE:
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if (unitidx == 1 &&
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(aOrdinal == 1 || (pos > 4 && aOrdinal % 1000 == 1))) {
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needOne = false;
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}
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break;
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case JAPANESE:
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if (unitidx > 0 &&
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(unitidx != 3 || (pos == 3 && aOrdinal == 1))) {
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needOne = false;
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}
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break;
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case KOREAN:
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if (unitidx > 0 || (pos == 4 && (aOrdinal % 1000) == 1)) {
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needOne = false;
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}
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break;
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}
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}
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if (needOne) {
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buf[--idx] = data.digit[1];
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}
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}
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unit10Kidx = 0;
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}
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aOrdinal /= 10;
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pos++;
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} while (aOrdinal > 0);
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aResult.Assign(buf + idx, NUM_BUF_SIZE - idx);
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return true;
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}
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#define HEBREW_GERESH 0x05F3
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static const char16_t gHebrewDigit[22] = {
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// 1 2 3 4 5 6 7 8 9
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0x05D0, 0x05D1, 0x05D2, 0x05D3, 0x05D4, 0x05D5, 0x05D6, 0x05D7, 0x05D8,
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// 10 20 30 40 50 60 70 80 90
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0x05D9, 0x05DB, 0x05DC, 0x05DE, 0x05E0, 0x05E1, 0x05E2, 0x05E4, 0x05E6,
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// 100 200 300 400
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0x05E7, 0x05E8, 0x05E9, 0x05EA};
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static bool HebrewToText(CounterValue aOrdinal, nsAString& aResult) {
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if (aOrdinal < 1 || aOrdinal > 999999) {
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return false;
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}
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bool outputSep = false;
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nsAutoString allText, thousandsGroup;
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do {
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thousandsGroup.Truncate();
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int32_t n3 = aOrdinal % 1000;
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// Process digit for 100 - 900
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for (int32_t n1 = 400; n1 > 0;) {
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if (n3 >= n1) {
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n3 -= n1;
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thousandsGroup.Append(gHebrewDigit[(n1 / 100) - 1 + 18]);
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} else {
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n1 -= 100;
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} // if
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} // for
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// Process digit for 10 - 90
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int32_t n2;
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if (n3 >= 10) {
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// Special process for 15 and 16
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if ((15 == n3) || (16 == n3)) {
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// Special rule for religious reason...
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// 15 is represented by 9 and 6, not 10 and 5
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// 16 is represented by 9 and 7, not 10 and 6
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n2 = 9;
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thousandsGroup.Append(gHebrewDigit[n2 - 1]);
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} else {
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n2 = n3 - (n3 % 10);
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thousandsGroup.Append(gHebrewDigit[(n2 / 10) - 1 + 9]);
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} // if
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n3 -= n2;
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} // if
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// Process digit for 1 - 9
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if (n3 > 0) thousandsGroup.Append(gHebrewDigit[n3 - 1]);
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if (outputSep) thousandsGroup.Append((char16_t)HEBREW_GERESH);
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if (allText.IsEmpty())
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allText = thousandsGroup;
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else
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allText = thousandsGroup + allText;
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aOrdinal /= 1000;
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outputSep = true;
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} while (aOrdinal >= 1);
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aResult = allText;
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return true;
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}
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// Convert ordinal to Ethiopic numeric representation.
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// The detail is available at http://www.ethiopic.org/Numerals/
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// The algorithm used here is based on the pseudo-code put up there by
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// Daniel Yacob <yacob@geez.org>.
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// Another reference is Unicode 3.0 standard section 11.1.
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#define ETHIOPIC_ONE 0x1369
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#define ETHIOPIC_TEN 0x1372
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#define ETHIOPIC_HUNDRED 0x137B
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#define ETHIOPIC_TEN_THOUSAND 0x137C
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static bool EthiopicToText(CounterValue aOrdinal, nsAString& aResult) {
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if (aOrdinal < 1) {
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return false;
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}
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nsAutoString asciiNumberString; // decimal string representation of ordinal
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DecimalToText(aOrdinal, asciiNumberString);
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uint8_t asciiStringLength = asciiNumberString.Length();
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// If number length is odd, add a leading "0"
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// the leading "0" preconditions the string to always have the
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// leading tens place populated, this avoids a check within the loop.
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// If we didn't add the leading "0", decrement asciiStringLength so
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// it will be equivalent to a zero-based index in both cases.
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if (asciiStringLength & 1) {
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asciiNumberString.InsertLiteral(u"0", 0);
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} else {
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asciiStringLength--;
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}
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aResult.Truncate();
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// Iterate from the highest digits to lowest
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// indexFromLeft indexes digits (0 = most significant)
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// groupIndexFromRight indexes pairs of digits (0 = least significant)
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for (uint8_t indexFromLeft = 0, groupIndexFromRight = asciiStringLength >> 1;
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indexFromLeft <= asciiStringLength;
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indexFromLeft += 2, groupIndexFromRight--) {
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uint8_t tensValue = asciiNumberString.CharAt(indexFromLeft) & 0x0F;
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uint8_t unitsValue = asciiNumberString.CharAt(indexFromLeft + 1) & 0x0F;
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uint8_t groupValue = tensValue * 10 + unitsValue;
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bool oddGroup = (groupIndexFromRight & 1);
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// we want to clear ETHIOPIC_ONE when it is superfluous
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if (aOrdinal > 1 && groupValue == 1 && // one without a leading ten
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(oddGroup ||
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indexFromLeft == 0)) { // preceding (100) or leading the sequence
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unitsValue = 0;
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}
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// put it all together...
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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:
|
|
constexpr BuiltinCounterStyle(int32_t aStyle, nsStaticAtom* aName)
|
|
: CounterStyle(aStyle), mName(aName) {}
|
|
|
|
nsStaticAtom* GetStyleName() const { return mName; }
|
|
|
|
virtual void GetPrefix(nsAString& aResult) override;
|
|
virtual void GetSuffix(nsAString& aResult) override;
|
|
virtual void GetSpokenCounterText(CounterValue aOrdinal,
|
|
WritingMode aWritingMode,
|
|
nsAString& 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,
|
|
nsAString& aResult, bool& aIsRTL) override;
|
|
|
|
protected:
|
|
constexpr BuiltinCounterStyle(const BuiltinCounterStyle& aOther)
|
|
: CounterStyle(aOther.mStyle), mName(aOther.mName) {}
|
|
|
|
private:
|
|
nsStaticAtom* mName;
|
|
};
|
|
|
|
/* virtual */ void BuiltinCounterStyle::GetPrefix(nsAString& aResult) {
|
|
aResult.Truncate();
|
|
}
|
|
|
|
/* virtual */ void BuiltinCounterStyle::GetSuffix(nsAString& 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(u", ");
|
|
break;
|
|
|
|
default:
|
|
aResult.AssignLiteral(u". ");
|
|
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, nsAString& 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(u"-");
|
|
}
|
|
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:
|
|
MOZ_ASSERT_UNREACHABLE("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, nsAString& 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:
|
|
MOZ_ASSERT_UNREACHABLE("Unknown builtin counter style");
|
|
return false;
|
|
}
|
|
}
|
|
|
|
static constexpr BuiltinCounterStyle gBuiltinStyleTable[] = {
|
|
#define BUILTIN_COUNTER_STYLE(value_, atom_) \
|
|
{NS_STYLE_LIST_STYLE_##value_, nsGkAtoms::atom_},
|
|
#include "BuiltinCounterStyleList.h"
|
|
#undef BUILTIN_COUNTER_STYLE
|
|
};
|
|
|
|
#define BUILTIN_COUNTER_STYLE(value_, atom_) \
|
|
static_assert(gBuiltinStyleTable[NS_STYLE_LIST_STYLE_##value_].GetStyle() == \
|
|
NS_STYLE_LIST_STYLE_##value_, \
|
|
"Builtin counter style " #atom_ \
|
|
" has unmatched index and value.");
|
|
#include "BuiltinCounterStyleList.h"
|
|
#undef BUILTIN_COUNTER_STYLE
|
|
|
|
class DependentBuiltinCounterStyle final : public BuiltinCounterStyle {
|
|
public:
|
|
DependentBuiltinCounterStyle(int32_t aStyle, CounterStyleManager* aManager)
|
|
: BuiltinCounterStyle(gBuiltinStyleTable[aStyle]), mManager(aManager) {
|
|
NS_ASSERTION(IsDependentStyle(), "Not a dependent builtin style");
|
|
MOZ_ASSERT(!IsCustomStyle(), "Not a builtin style");
|
|
}
|
|
|
|
virtual CounterStyle* GetFallback() override;
|
|
|
|
void* operator new(size_t sz, nsPresContext* aPresContext) {
|
|
return aPresContext->PresShell()->AllocateByObjectID(
|
|
eArenaObjectID_DependentBuiltinCounterStyle, sz);
|
|
}
|
|
|
|
void Destroy() {
|
|
nsIPresShell* shell = mManager->PresContext()->PresShell();
|
|
this->~DependentBuiltinCounterStyle();
|
|
shell->FreeByObjectID(eArenaObjectID_DependentBuiltinCounterStyle, this);
|
|
}
|
|
|
|
private:
|
|
~DependentBuiltinCounterStyle() {}
|
|
|
|
CounterStyleManager* mManager;
|
|
};
|
|
|
|
/* 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->ResolveCounterStyle(nsGkAtoms::cjk_decimal);
|
|
default:
|
|
MOZ_ASSERT_UNREACHABLE("Not a valid dependent builtin style");
|
|
return BuiltinCounterStyle::GetFallback();
|
|
}
|
|
}
|
|
|
|
class CustomCounterStyle final : public CounterStyle {
|
|
public:
|
|
CustomCounterStyle(CounterStyleManager* aManager,
|
|
const RawServoCounterStyleRule* aRule)
|
|
: CounterStyle(NS_STYLE_LIST_STYLE_CUSTOM),
|
|
mManager(aManager),
|
|
mRule(aRule),
|
|
mRuleGeneration(Servo_CounterStyleRule_GetGeneration(aRule)),
|
|
mSystem(Servo_CounterStyleRule_GetSystem(aRule)),
|
|
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();
|
|
|
|
const RawServoCounterStyleRule* GetRule() const { return mRule; }
|
|
uint32_t GetRuleGeneration() const { return mRuleGeneration; }
|
|
|
|
virtual void GetPrefix(nsAString& aResult) override;
|
|
virtual void GetSuffix(nsAString& aResult) override;
|
|
virtual void GetSpokenCounterText(CounterValue aOrdinal,
|
|
WritingMode aWritingMode,
|
|
nsAString& 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, nsAString& aResult,
|
|
bool& aIsRTL) override;
|
|
virtual bool GetInitialCounterText(CounterValue aOrdinal,
|
|
WritingMode aWritingMode,
|
|
nsAString& aResult, bool& aIsRTL) override;
|
|
|
|
bool IsExtendsSystem() { return mSystem == NS_STYLE_COUNTER_SYSTEM_EXTENDS; }
|
|
|
|
void* operator new(size_t sz, nsPresContext* aPresContext) {
|
|
return aPresContext->PresShell()->AllocateByObjectID(
|
|
eArenaObjectID_CustomCounterStyle, sz);
|
|
}
|
|
|
|
void Destroy() {
|
|
nsIPresShell* shell = mManager->PresContext()->PresShell();
|
|
this->~CustomCounterStyle();
|
|
shell->FreeByObjectID(eArenaObjectID_CustomCounterStyle, this);
|
|
}
|
|
|
|
private:
|
|
~CustomCounterStyle() {}
|
|
|
|
nsCSSValue GetDesc(nsCSSCounterDesc aDesc) const {
|
|
nsCSSValue value;
|
|
Servo_CounterStyleRule_GetDescriptor(mRule, aDesc, &value);
|
|
return value;
|
|
}
|
|
|
|
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<const RawServoCounterStyleRule> mRule;
|
|
uint32_t mRuleGeneration;
|
|
|
|
uint8_t mSystem;
|
|
// GetSpeakAs will ensure that private member mSpeakAs is initialized before
|
|
// used
|
|
MOZ_INIT_OUTSIDE_CTOR 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;
|
|
};
|
|
|
|
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 = Servo_CounterStyleRule_GetGeneration(mRule);
|
|
}
|
|
|
|
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(nsAString& aResult) {
|
|
if (!(mFlags & FLAG_PREFIX_INITED)) {
|
|
mFlags |= FLAG_PREFIX_INITED;
|
|
|
|
nsCSSValue value = GetDesc(eCSSCounterDesc_Prefix);
|
|
if (value.UnitHasStringValue()) {
|
|
value.GetStringValue(mPrefix);
|
|
} else if (IsExtendsSystem()) {
|
|
GetExtends()->GetPrefix(mPrefix);
|
|
} else {
|
|
mPrefix.Truncate();
|
|
}
|
|
}
|
|
aResult = mPrefix;
|
|
}
|
|
|
|
/* virtual */ void CustomCounterStyle::GetSuffix(nsAString& aResult) {
|
|
if (!(mFlags & FLAG_SUFFIX_INITED)) {
|
|
mFlags |= FLAG_SUFFIX_INITED;
|
|
|
|
nsCSSValue value = GetDesc(eCSSCounterDesc_Suffix);
|
|
if (value.UnitHasStringValue()) {
|
|
value.GetStringValue(mSuffix);
|
|
} else if (IsExtendsSystem()) {
|
|
GetExtends()->GetSuffix(mSuffix);
|
|
} else {
|
|
mSuffix.AssignLiteral(u". ");
|
|
}
|
|
}
|
|
aResult = mSuffix;
|
|
}
|
|
|
|
/* virtual */ void CustomCounterStyle::GetSpokenCounterText(
|
|
CounterValue aOrdinal, WritingMode aWritingMode, nsAString& 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;
|
|
nsCSSValue value = 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(u"-");
|
|
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) {
|
|
nsCSSValue value = 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:
|
|
MOZ_ASSERT_UNREACHABLE("Invalid system for computing auto value.");
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/* virtual */ void CustomCounterStyle::GetPad(PadType& aResult) {
|
|
if (!(mFlags & FLAG_PAD_INITED)) {
|
|
mFlags |= FLAG_PAD_INITED;
|
|
nsCSSValue value = 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) {
|
|
mFallback = CounterStyleManager::GetDecimalStyle();
|
|
if (nsAtom* fallback = Servo_CounterStyleRule_GetFallback(mRule)) {
|
|
mFallback = mManager->ResolveCounterStyle(fallback);
|
|
} else if (IsExtendsSystem()) {
|
|
mFallback = GetExtends()->GetFallback();
|
|
}
|
|
}
|
|
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, nsAString& 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, nsAString& 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 = Servo_CounterStyleRule_GetFixedFirstValue(mRule);
|
|
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:
|
|
MOZ_ASSERT_UNREACHABLE("Invalid system.");
|
|
return false;
|
|
}
|
|
}
|
|
|
|
const nsTArray<nsString>& CustomCounterStyle::GetSymbols() {
|
|
if (mSymbols.IsEmpty()) {
|
|
nsCSSValue values = 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()) {
|
|
nsCSSValue values = 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.");
|
|
|
|
nsCSSValue value = GetDesc(eCSSCounterDesc_SpeakAs);
|
|
switch (value.GetUnit()) {
|
|
case eCSSUnit_Auto:
|
|
aSpeakAs = GetSpeakAsAutoValue();
|
|
break;
|
|
case eCSSUnit_Enumerated:
|
|
aSpeakAs = value.GetIntValue();
|
|
break;
|
|
case eCSSUnit_AtomIdent:
|
|
aSpeakAs = NS_STYLE_COUNTER_SPEAKAS_OTHER;
|
|
aSpeakAsCounter = mManager->ResolveCounterStyle(value.GetAtomValue());
|
|
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:
|
|
MOZ_ASSERT_UNREACHABLE("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;
|
|
}
|
|
|
|
nsAtom* extended = Servo_CounterStyleRule_GetExtended(mRule);
|
|
CounterStyle* nextCounter = mManager->ResolveCounterStyle(extended);
|
|
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 nsAString& aContent)
|
|
: CounterStyle(NS_STYLE_LIST_STYLE_CUSTOM),
|
|
mSingleString(true),
|
|
mSystem(NS_STYLE_COUNTER_SYSTEM_CYCLIC) {
|
|
mSymbols.SetCapacity(1);
|
|
mSymbols.AppendElement(aContent);
|
|
}
|
|
|
|
static nsTArray<nsString> CollectSymbolsFromCSSValueList(
|
|
const nsCSSValueList* aList) {
|
|
nsTArray<nsString> symbols;
|
|
for (const nsCSSValueList* item = aList; item; item = item->mNext) {
|
|
item->mValue.GetStringValue(*symbols.AppendElement());
|
|
}
|
|
symbols.Compact();
|
|
return symbols;
|
|
}
|
|
|
|
AnonymousCounterStyle::AnonymousCounterStyle(const nsCSSValue::Array* aParams)
|
|
: AnonymousCounterStyle(
|
|
aParams->Item(0).GetIntValue(),
|
|
CollectSymbolsFromCSSValueList(aParams->Item(1).GetListValue())) {}
|
|
|
|
AnonymousCounterStyle::AnonymousCounterStyle(uint8_t aSystem,
|
|
nsTArray<nsString> aSymbols)
|
|
: CounterStyle(NS_STYLE_LIST_STYLE_CUSTOM),
|
|
mSingleString(false),
|
|
mSystem(aSystem),
|
|
mSymbols(std::move(aSymbols)) {}
|
|
|
|
/* 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(u"-");
|
|
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:
|
|
MOZ_ASSERT_UNREACHABLE("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:
|
|
MOZ_ASSERT_UNREACHABLE("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;
|
|
}
|
|
}
|
|
|
|
void CounterStyle::GetCounterText(CounterValue aOrdinal,
|
|
WritingMode aWritingMode, nsAString& 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 - unicode::CountGraphemeClusters(
|
|
initialText.Data(), initialText.Length());
|
|
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,
|
|
nsAString& 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
|
|
MOZ_ASSERT_UNREACHABLE("Invalid speak-as value");
|
|
break;
|
|
default:
|
|
MOZ_ASSERT_UNREACHABLE("Unknown speak-as value");
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* virtual */ void CounterStyle::CallFallbackStyle(CounterValue aOrdinal,
|
|
WritingMode aWritingMode,
|
|
nsAString& aResult,
|
|
bool& aIsRTL) {
|
|
GetFallback()->GetCounterText(aOrdinal, aWritingMode, aResult, aIsRTL);
|
|
}
|
|
|
|
CounterStyleManager::CounterStyleManager(nsPresContext* aPresContext)
|
|
: mPresContext(aPresContext) {
|
|
// Insert the static styles into cache table
|
|
mStyles.Put(nsGkAtoms::none, GetNoneStyle());
|
|
mStyles.Put(nsGkAtoms::decimal, GetDecimalStyle());
|
|
mStyles.Put(nsGkAtoms::disc, GetDiscStyle());
|
|
}
|
|
|
|
CounterStyleManager::~CounterStyleManager() {
|
|
MOZ_ASSERT(!mPresContext, "Disconnect should have been called");
|
|
}
|
|
|
|
void CounterStyleManager::DestroyCounterStyle(CounterStyle* aCounterStyle) {
|
|
if (aCounterStyle->IsCustomStyle()) {
|
|
MOZ_ASSERT(!aCounterStyle->AsAnonymous(),
|
|
"Anonymous counter styles "
|
|
"are not managed by CounterStyleManager");
|
|
static_cast<CustomCounterStyle*>(aCounterStyle)->Destroy();
|
|
} else if (aCounterStyle->IsDependentStyle()) {
|
|
static_cast<DependentBuiltinCounterStyle*>(aCounterStyle)->Destroy();
|
|
} else {
|
|
MOZ_ASSERT_UNREACHABLE("Builtin counter styles should not be destroyed");
|
|
}
|
|
}
|
|
|
|
void CounterStyleManager::Disconnect() {
|
|
CleanRetiredStyles();
|
|
for (auto iter = mStyles.Iter(); !iter.Done(); iter.Next()) {
|
|
CounterStyle* style = iter.Data();
|
|
if (style->IsDependentStyle()) {
|
|
DestroyCounterStyle(style);
|
|
}
|
|
}
|
|
mStyles.Clear();
|
|
mPresContext = nullptr;
|
|
}
|
|
|
|
CounterStyle* CounterStyleManager::ResolveCounterStyle(nsAtom* aName) {
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
CounterStyle* data = GetCounterStyle(aName);
|
|
if (data) {
|
|
return data;
|
|
}
|
|
|
|
// Names are compared case-sensitively here. Predefined names should
|
|
// have been lowercased by the parser.
|
|
ServoStyleSet* styleSet = mPresContext->StyleSet();
|
|
auto* rule = styleSet->CounterStyleRuleForName(aName);
|
|
if (rule) {
|
|
MOZ_ASSERT(Servo_CounterStyleRule_GetName(rule) == aName);
|
|
data = new (mPresContext) CustomCounterStyle(this, rule);
|
|
} else {
|
|
for (const BuiltinCounterStyle& item : gBuiltinStyleTable) {
|
|
if (item.GetStyleName() == aName) {
|
|
int32_t style = item.GetStyle();
|
|
data = item.IsDependentStyle()
|
|
? new (mPresContext)
|
|
DependentBuiltinCounterStyle(style, this)
|
|
: GetBuiltinStyle(style);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if (!data) {
|
|
data = GetDecimalStyle();
|
|
}
|
|
mStyles.Put(aName, data);
|
|
return data;
|
|
}
|
|
|
|
/* static */ CounterStyle* CounterStyleManager::GetBuiltinStyle(
|
|
int32_t aStyle) {
|
|
MOZ_ASSERT(0 <= aStyle && size_t(aStyle) < sizeof(gBuiltinStyleTable),
|
|
"Require a valid builtin style constant");
|
|
MOZ_ASSERT(!gBuiltinStyleTable[aStyle].IsDependentStyle(),
|
|
"Cannot get dependent builtin style");
|
|
// No method of BuiltinCounterStyle mutates the struct itself, so it
|
|
// should be fine to cast const away.
|
|
return const_cast<BuiltinCounterStyle*>(&gBuiltinStyleTable[aStyle]);
|
|
}
|
|
|
|
bool CounterStyleManager::NotifyRuleChanged() {
|
|
bool changed = false;
|
|
for (auto iter = mStyles.Iter(); !iter.Done(); iter.Next()) {
|
|
CounterStyle* style = iter.Data();
|
|
bool toBeUpdated = false;
|
|
bool toBeRemoved = false;
|
|
ServoStyleSet* styleSet = mPresContext->StyleSet();
|
|
auto* newRule = styleSet->CounterStyleRuleForName(iter.Key());
|
|
if (!newRule) {
|
|
if (style->IsCustomStyle()) {
|
|
toBeRemoved = true;
|
|
}
|
|
} else {
|
|
if (!style->IsCustomStyle()) {
|
|
toBeRemoved = true;
|
|
} else {
|
|
auto custom = static_cast<CustomCounterStyle*>(style);
|
|
if (custom->GetRule() != newRule) {
|
|
toBeRemoved = true;
|
|
} else {
|
|
auto generation = Servo_CounterStyleRule_GetGeneration(newRule);
|
|
if (custom->GetRuleGeneration() != generation) {
|
|
toBeUpdated = true;
|
|
custom->ResetCachedData();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
changed = changed || toBeUpdated || toBeRemoved;
|
|
if (toBeRemoved) {
|
|
if (style->IsDependentStyle()) {
|
|
// Add object to retired list so we can clean them up later.
|
|
mRetiredStyles.AppendElement(style);
|
|
}
|
|
iter.Remove();
|
|
}
|
|
}
|
|
|
|
if (changed) {
|
|
for (auto iter = mStyles.Iter(); !iter.Done(); iter.Next()) {
|
|
CounterStyle* style = iter.Data();
|
|
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;
|
|
}
|
|
|
|
void CounterStyleManager::CleanRetiredStyles() {
|
|
nsTArray<CounterStyle*> list(std::move(mRetiredStyles));
|
|
for (CounterStyle* style : list) {
|
|
DestroyCounterStyle(style);
|
|
}
|
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}
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} // namespace mozilla
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