| /* |
| * Copyright (C) 2011 Nokia Inc. All rights reserved. |
| * Copyright (C) 2012 Google Inc. All rights reserved. |
| * Copyright (C) 2013, 2017 Apple Inc. All rights reserved. |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Library General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Library General Public License for more details. |
| * |
| * You should have received a copy of the GNU Library General Public License |
| * along with this library; see the file COPYING.LIB. If not, write to |
| * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| * Boston, MA 02110-1301, USA. |
| * |
| */ |
| |
| #include "config.h" |
| #include "RenderQuote.h" |
| |
| #include "QuotesData.h" |
| #include "RenderTextFragment.h" |
| #include "RenderTreeBuilder.h" |
| #include "RenderView.h" |
| #include <wtf/IsoMallocInlines.h> |
| #include <wtf/unicode/CharacterNames.h> |
| |
| namespace WebCore { |
| using namespace WTF::Unicode; |
| |
| WTF_MAKE_ISO_ALLOCATED_IMPL(RenderQuote); |
| |
| RenderQuote::RenderQuote(Document& document, RenderStyle&& style, QuoteType quote) |
| : RenderInline(document, WTFMove(style)) |
| , m_type(quote) |
| , m_text(emptyString()) |
| { |
| } |
| |
| RenderQuote::~RenderQuote() |
| { |
| // Do not add any code here. Add it to willBeDestroyed() instead. |
| } |
| |
| void RenderQuote::insertedIntoTree(IsInternalMove isInternalMove) |
| { |
| RenderInline::insertedIntoTree(isInternalMove); |
| view().setHasQuotesNeedingUpdate(true); |
| } |
| |
| void RenderQuote::willBeRemovedFromTree(IsInternalMove isInternalMove) |
| { |
| view().setHasQuotesNeedingUpdate(true); |
| RenderInline::willBeRemovedFromTree(isInternalMove); |
| } |
| |
| void RenderQuote::styleDidChange(StyleDifference diff, const RenderStyle* oldStyle) |
| { |
| RenderInline::styleDidChange(diff, oldStyle); |
| if (diff >= StyleDifference::Layout) { |
| m_needsTextUpdate = true; |
| view().setHasQuotesNeedingUpdate(true); |
| } |
| } |
| |
| const unsigned maxDistinctQuoteCharacters = 16; |
| |
| #if ASSERT_ENABLED |
| |
| static void checkNumberOfDistinctQuoteCharacters(UChar character) |
| { |
| ASSERT(character); |
| static UChar distinctQuoteCharacters[maxDistinctQuoteCharacters]; |
| for (unsigned i = 0; i < maxDistinctQuoteCharacters; ++i) { |
| if (distinctQuoteCharacters[i] == character) |
| return; |
| if (!distinctQuoteCharacters[i]) { |
| distinctQuoteCharacters[i] = character; |
| return; |
| } |
| } |
| ASSERT_NOT_REACHED(); |
| } |
| |
| #endif // ASSERT_ENABLED |
| |
| struct SubtagComparison { |
| size_t keyLength; |
| size_t keyContinue; |
| size_t rangeLength; |
| size_t rangeContinue; |
| int comparison; |
| }; |
| |
| static SubtagComparison subtagCompare(const char* key, const char* range) |
| { |
| SubtagComparison result; |
| |
| result.keyLength = strlen(key); |
| result.keyContinue = result.keyLength; |
| if (auto* hyphenPointer = strchr(key, '-')) { |
| result.keyLength = hyphenPointer - key; |
| result.keyContinue = result.keyLength + 1; |
| } |
| |
| result.rangeLength = strlen(range); |
| result.rangeContinue = result.rangeLength; |
| if (auto* hyphenPointer = strchr(range, '-')) { |
| result.rangeLength = hyphenPointer - range; |
| result.rangeContinue = result.rangeLength + 1; |
| } |
| |
| if (result.keyLength == result.rangeLength) |
| result.comparison = memcmp(key, range, result.keyLength); |
| else |
| result.comparison = strcmp(key, range); |
| |
| return result; |
| } |
| |
| // These strings need to be compared according to "Extended Filtering", as in Section 3.3.2 in RFC4647. |
| // https://tools.ietf.org/html/rfc4647#page-10 |
| // |
| // The "checkFurther" field is needed in one specific situation. |
| // In the quoteTable below, there are lines like: |
| // { "de" , 0x201e, 0x201c, 0x201a, 0x2018 }, |
| // { "de-ch", 0x00ab, 0x00bb, 0x2039, 0x203a }, |
| // Let's say the binary search arbitrarily decided to test our key against the upper line "de" first. |
| // If the key we're testing against is "de-ch", then we should report "greater than", |
| // so the binary search will keep searching and eventually find the "de-ch" line. |
| // However, if the key we're testing against is "de-de", then we should report "equal to", |
| // because these are the quotes we should use for all "de" except for "de-ch". |
| struct QuotesForLanguage { |
| const char* language; |
| UChar checkFurther; |
| UChar open1; |
| UChar close1; |
| UChar open2; |
| UChar close2; |
| }; |
| |
| static int quoteTableLanguageComparisonFunction(const void* a, const void* b) |
| { |
| // These strings need to be compared according to "Extended Filtering", as in Section 3.3.2 in RFC4647. |
| // https://tools.ietf.org/html/rfc4647#page-10 |
| // |
| // We can exploit a few things here to improve perf: |
| // 1. The first subtag must be matched exactly |
| // 2. All the ranges have either 1 or 2 subtags |
| // 3. None of the subtags in any of the ranges are wildcards |
| // |
| // Also, see the comment just above the QuotesForLanguage struct. |
| |
| auto* key = static_cast<const QuotesForLanguage*>(a); |
| auto* range = static_cast<const QuotesForLanguage*>(b); |
| |
| auto firstSubtagComparison = subtagCompare(key->language, range->language); |
| |
| if (firstSubtagComparison.keyLength != firstSubtagComparison.rangeLength) |
| return firstSubtagComparison.comparison; |
| |
| if (firstSubtagComparison.comparison) |
| return firstSubtagComparison.comparison; |
| |
| for (UChar i = 1; i <= range->checkFurther; ++i) { |
| if (!quoteTableLanguageComparisonFunction(key, range + i)) { |
| // Tell the binary search to check later in the array of ranges, to eventually find the match we just found here. |
| return 1; |
| } |
| } |
| |
| for (size_t keyOffset = firstSubtagComparison.keyContinue; ;) { |
| auto nextSubtagComparison = subtagCompare(key->language + keyOffset, range->language + firstSubtagComparison.rangeContinue); |
| |
| if (!nextSubtagComparison.rangeLength) { |
| // E.g. The key is "zh-Hans" and the range is "zh". |
| return 0; |
| } |
| |
| if (!nextSubtagComparison.keyLength) { |
| // E.g. the key is "zh" and the range is "zh-Hant". |
| return nextSubtagComparison.comparison; |
| } |
| |
| if (nextSubtagComparison.keyLength == 1) { |
| // E.g. the key is "zh-x-Hant" and the range is "zh-Hant". |
| // We want to try to find the range "zh", so tell the binary search to check earlier in the array of ranges. |
| return -1; |
| } |
| |
| if (nextSubtagComparison.keyLength == nextSubtagComparison.rangeLength && !nextSubtagComparison.comparison) { |
| // E.g. the key is "de-Latn-ch" and the range is "de-ch". |
| return 0; |
| } |
| |
| keyOffset += nextSubtagComparison.keyContinue; |
| } |
| } |
| |
| static const QuotesForLanguage* quotesForLanguage(const String& language) |
| { |
| // Table of quotes from http://www.whatwg.org/specs/web-apps/current-work/multipage/rendering.html#quotes |
| // FIXME: This table is out-of-date. |
| static const QuotesForLanguage quoteTable[] = { |
| { "af", 0, 0x201c, 0x201d, 0x2018, 0x2019 }, |
| { "agq", 0, 0x201e, 0x201d, 0x201a, 0x2019 }, |
| { "ak", 0, 0x201c, 0x201d, 0x2018, 0x2019 }, |
| { "am", 0, 0x00ab, 0x00bb, 0x2039, 0x203a }, |
| { "ar", 0, 0x201d, 0x201c, 0x2019, 0x2018 }, |
| { "asa", 0, 0x201c, 0x201d, 0x2018, 0x2019 }, |
| { "az-cyrl", 0, 0x00ab, 0x00bb, 0x2039, 0x203a }, |
| { "bas", 0, 0x00ab, 0x00bb, 0x201e, 0x201c }, |
| { "bem", 0, 0x201c, 0x201d, 0x2018, 0x2019 }, |
| { "bez", 0, 0x201c, 0x201d, 0x2018, 0x2019 }, |
| { "bg", 0, 0x201e, 0x201c, 0x201a, 0x2018 }, |
| { "bm", 0, 0x00ab, 0x00bb, 0x201c, 0x201d }, |
| { "bn", 0, 0x201c, 0x201d, 0x2018, 0x2019 }, |
| { "br", 0, 0x00ab, 0x00bb, 0x2039, 0x203a }, |
| { "brx", 0, 0x201c, 0x201d, 0x2018, 0x2019 }, |
| { "bs-cyrl", 0, 0x201e, 0x201c, 0x201a, 0x2018 }, |
| { "ca", 0, 0x201c, 0x201d, 0x00ab, 0x00bb }, |
| { "cgg", 0, 0x201c, 0x201d, 0x2018, 0x2019 }, |
| { "chr", 0, 0x201c, 0x201d, 0x2018, 0x2019 }, |
| { "cs", 0, 0x201e, 0x201c, 0x201a, 0x2018 }, |
| { "da", 0, 0x201c, 0x201d, 0x2018, 0x2019 }, |
| { "dav", 0, 0x201c, 0x201d, 0x2018, 0x2019 }, |
| { "de", 1, 0x201e, 0x201c, 0x201a, 0x2018 }, |
| { "de-ch", 0, 0x00ab, 0x00bb, 0x2039, 0x203a }, |
| { "dje", 0, 0x201c, 0x201d, 0x2018, 0x2019 }, |
| { "dua", 0, 0x00ab, 0x00bb, 0x2018, 0x2019 }, |
| { "dyo", 0, 0x00ab, 0x00bb, 0x201c, 0x201d }, |
| { "dz", 0, 0x201c, 0x201d, 0x2018, 0x2019 }, |
| { "ebu", 0, 0x201c, 0x201d, 0x2018, 0x2019 }, |
| { "ee", 0, 0x201c, 0x201d, 0x2018, 0x2019 }, |
| { "el", 0, 0x00ab, 0x00bb, 0x201c, 0x201d }, |
| { "en", 1, 0x201c, 0x201d, 0x2018, 0x2019 }, |
| { "en-gb", 0, 0x201c, 0x201d, 0x2018, 0x2019 }, |
| { "es", 0, 0x201c, 0x201d, 0x00ab, 0x00bb }, |
| { "et", 0, 0x201e, 0x201c, 0x201a, 0x2018 }, |
| { "eu", 0, 0x201c, 0x201d, 0x00ab, 0x00bb }, |
| { "ewo", 0, 0x00ab, 0x00bb, 0x201c, 0x201d }, |
| { "fa", 0, 0x00ab, 0x00bb, 0x2039, 0x203a }, |
| { "ff", 0, 0x201e, 0x201d, 0x201a, 0x2019 }, |
| { "fi", 0, 0x201d, 0x201d, 0x2019, 0x2019 }, |
| { "fr", 2, 0x00ab, 0x00bb, 0x00ab, 0x00bb }, |
| { "fr-ca", 0, 0x00ab, 0x00bb, 0x2039, 0x203a }, |
| { "fr-ch", 0, 0x00ab, 0x00bb, 0x2039, 0x203a }, |
| { "gsw", 0, 0x00ab, 0x00bb, 0x2039, 0x203a }, |
| { "gu", 0, 0x201c, 0x201d, 0x2018, 0x2019 }, |
| { "guz", 0, 0x201c, 0x201d, 0x2018, 0x2019 }, |
| { "ha", 0, 0x201c, 0x201d, 0x2018, 0x2019 }, |
| { "he", 0, 0x0022, 0x0022, 0x0027, 0x0027 }, |
| { "hi", 0, 0x201c, 0x201d, 0x2018, 0x2019 }, |
| { "hr", 0, 0x201e, 0x201c, 0x201a, 0x2018 }, |
| { "hu", 0, 0x201e, 0x201d, 0x00bb, 0x00ab }, |
| { "id", 0, 0x201c, 0x201d, 0x2018, 0x2019 }, |
| { "ig", 0, 0x201c, 0x201d, 0x2018, 0x2019 }, |
| { "it", 0, 0x00ab, 0x00bb, 0x201c, 0x201d }, |
| { "ja", 0, 0x300c, 0x300d, 0x300e, 0x300f }, |
| { "jgo", 0, 0x00ab, 0x00bb, 0x2039, 0x203a }, |
| { "jmc", 0, 0x201c, 0x201d, 0x2018, 0x2019 }, |
| { "kab", 0, 0x00ab, 0x00bb, 0x201c, 0x201d }, |
| { "kam", 0, 0x201c, 0x201d, 0x2018, 0x2019 }, |
| { "kde", 0, 0x201c, 0x201d, 0x2018, 0x2019 }, |
| { "kea", 0, 0x201c, 0x201d, 0x2018, 0x2019 }, |
| { "khq", 0, 0x201c, 0x201d, 0x2018, 0x2019 }, |
| { "ki", 0, 0x201c, 0x201d, 0x2018, 0x2019 }, |
| { "kkj", 0, 0x00ab, 0x00bb, 0x2039, 0x203a }, |
| { "kln", 0, 0x201c, 0x201d, 0x2018, 0x2019 }, |
| { "km", 0, 0x201c, 0x201d, 0x2018, 0x2019 }, |
| { "kn", 0, 0x201c, 0x201d, 0x2018, 0x2019 }, |
| { "ko", 0, 0x201c, 0x201d, 0x2018, 0x2019 }, |
| { "ksb", 0, 0x201c, 0x201d, 0x2018, 0x2019 }, |
| { "ksf", 0, 0x00ab, 0x00bb, 0x2018, 0x2019 }, |
| { "lag", 0, 0x201d, 0x201d, 0x2019, 0x2019 }, |
| { "lg", 0, 0x201c, 0x201d, 0x2018, 0x2019 }, |
| { "ln", 0, 0x201c, 0x201d, 0x2018, 0x2019 }, |
| { "lo", 0, 0x201c, 0x201d, 0x2018, 0x2019 }, |
| { "lt", 0, 0x201e, 0x201c, 0x201e, 0x201c }, |
| { "lu", 0, 0x201c, 0x201d, 0x2018, 0x2019 }, |
| { "luo", 0, 0x201c, 0x201d, 0x2018, 0x2019 }, |
| { "luy", 0, 0x201e, 0x201c, 0x201a, 0x2018 }, |
| { "lv", 0, 0x201c, 0x201d, 0x2018, 0x2019 }, |
| { "mas", 0, 0x201c, 0x201d, 0x2018, 0x2019 }, |
| { "mer", 0, 0x201c, 0x201d, 0x2018, 0x2019 }, |
| { "mfe", 0, 0x201c, 0x201d, 0x2018, 0x2019 }, |
| { "mg", 0, 0x00ab, 0x00bb, 0x201c, 0x201d }, |
| { "mgo", 0, 0x201c, 0x201d, 0x2018, 0x2019 }, |
| { "mk", 0, 0x201e, 0x201c, 0x201a, 0x2018 }, |
| { "ml", 0, 0x201c, 0x201d, 0x2018, 0x2019 }, |
| { "mr", 0, 0x201c, 0x201d, 0x2018, 0x2019 }, |
| { "ms", 0, 0x201c, 0x201d, 0x2018, 0x2019 }, |
| { "mua", 0, 0x00ab, 0x00bb, 0x201c, 0x201d }, |
| { "my", 0, 0x201c, 0x201d, 0x2018, 0x2019 }, |
| { "naq", 0, 0x201c, 0x201d, 0x2018, 0x2019 }, |
| { "nb", 0, 0x00ab, 0x00bb, 0x2018, 0x2019 }, |
| { "nd", 0, 0x201c, 0x201d, 0x2018, 0x2019 }, |
| { "nl", 0, 0x201c, 0x201d, 0x2018, 0x2019 }, |
| { "nmg", 0, 0x201e, 0x201d, 0x00ab, 0x00bb }, |
| { "nn", 0, 0x00ab, 0x00bb, 0x2018, 0x2019 }, |
| { "nnh", 0, 0x00ab, 0x00bb, 0x201c, 0x201d }, |
| { "nus", 0, 0x201c, 0x201d, 0x2018, 0x2019 }, |
| { "nyn", 0, 0x201c, 0x201d, 0x2018, 0x2019 }, |
| { "pl", 0, 0x201e, 0x201d, 0x00ab, 0x00bb }, |
| { "pt", 1, 0x201c, 0x201d, 0x2018, 0x2019 }, |
| { "pt-pt", 0, 0x00ab, 0x00bb, 0x201c, 0x201d }, |
| { "rn", 0, 0x201d, 0x201d, 0x2019, 0x2019 }, |
| { "ro", 0, 0x201e, 0x201d, 0x00ab, 0x00bb }, |
| { "rof", 0, 0x201c, 0x201d, 0x2018, 0x2019 }, |
| { "ru", 0, 0x00ab, 0x00bb, 0x201e, 0x201c }, |
| { "rw", 0, 0x00ab, 0x00bb, 0x2018, 0x2019 }, |
| { "rwk", 0, 0x201c, 0x201d, 0x2018, 0x2019 }, |
| { "saq", 0, 0x201c, 0x201d, 0x2018, 0x2019 }, |
| { "sbp", 0, 0x201c, 0x201d, 0x2018, 0x2019 }, |
| { "seh", 0, 0x201c, 0x201d, 0x2018, 0x2019 }, |
| { "ses", 0, 0x201c, 0x201d, 0x2018, 0x2019 }, |
| { "sg", 0, 0x00ab, 0x00bb, 0x201c, 0x201d }, |
| { "shi", 1, 0x00ab, 0x00bb, 0x201e, 0x201d }, |
| { "shi-tfng", 0, 0x00ab, 0x00bb, 0x201e, 0x201d }, |
| { "si", 0, 0x201c, 0x201d, 0x2018, 0x2019 }, |
| { "sk", 0, 0x201e, 0x201c, 0x201a, 0x2018 }, |
| { "sl", 0, 0x201e, 0x201c, 0x201a, 0x2018 }, |
| { "sn", 0, 0x201d, 0x201d, 0x2019, 0x2019 }, |
| { "so", 0, 0x201c, 0x201d, 0x2018, 0x2019 }, |
| { "sq", 0, 0x201e, 0x201c, 0x201a, 0x2018 }, |
| { "sr", 1, 0x201e, 0x201c, 0x201a, 0x2018 }, |
| { "sr-latn", 0, 0x201e, 0x201c, 0x201a, 0x2018 }, |
| { "sv", 0, 0x201d, 0x201d, 0x2019, 0x2019 }, |
| { "sw", 0, 0x201c, 0x201d, 0x2018, 0x2019 }, |
| { "swc", 0, 0x201c, 0x201d, 0x2018, 0x2019 }, |
| { "ta", 0, 0x201c, 0x201d, 0x2018, 0x2019 }, |
| { "te", 0, 0x201c, 0x201d, 0x2018, 0x2019 }, |
| { "teo", 0, 0x201c, 0x201d, 0x2018, 0x2019 }, |
| { "th", 0, 0x201c, 0x201d, 0x2018, 0x2019 }, |
| { "ti-er", 0, 0x2018, 0x2019, 0x201c, 0x201d }, |
| { "to", 0, 0x201c, 0x201d, 0x2018, 0x2019 }, |
| { "tr", 0, 0x201c, 0x201d, 0x2018, 0x2019 }, |
| { "twq", 0, 0x201c, 0x201d, 0x2018, 0x2019 }, |
| { "tzm", 0, 0x201c, 0x201d, 0x2018, 0x2019 }, |
| { "uk", 0, 0x00ab, 0x00bb, 0x201e, 0x201c }, |
| { "ur", 0, 0x201d, 0x201c, 0x2019, 0x2018 }, |
| { "vai", 1, 0x201c, 0x201d, 0x2018, 0x2019 }, |
| { "vai-latn", 0, 0x201c, 0x201d, 0x2018, 0x2019 }, |
| { "vi", 0, 0x201c, 0x201d, 0x2018, 0x2019 }, |
| { "vun", 0, 0x201c, 0x201d, 0x2018, 0x2019 }, |
| { "xh", 0, 0x2018, 0x2019, 0x201c, 0x201d }, |
| { "xog", 0, 0x201c, 0x201d, 0x2018, 0x2019 }, |
| { "yav", 0, 0x00ab, 0x00bb, 0x00ab, 0x00bb }, |
| { "yo", 0, 0x201c, 0x201d, 0x2018, 0x2019 }, |
| { "zh", 1, 0x201c, 0x201d, 0x2018, 0x2019 }, |
| { "zh-hant", 0, 0x300c, 0x300d, 0x300e, 0x300f }, |
| { "zu", 0, 0x201c, 0x201d, 0x2018, 0x2019 }, |
| }; |
| |
| #if ASSERT_ENABLED |
| // One time check that the table meets the constraints that the code below relies on. |
| |
| static bool didOneTimeCheck = false; |
| if (!didOneTimeCheck) { |
| didOneTimeCheck = true; |
| |
| checkNumberOfDistinctQuoteCharacters(quotationMark); |
| checkNumberOfDistinctQuoteCharacters(apostrophe); |
| |
| for (unsigned i = 0; i < WTF_ARRAY_LENGTH(quoteTable); ++i) { |
| if (i) |
| ASSERT(strcmp(quoteTable[i - 1].language, quoteTable[i].language) < 0); |
| |
| for (unsigned j = 0; UChar character = quoteTable[i].language[j]; ++j) |
| ASSERT(isASCIILower(character) || character == '-'); |
| |
| checkNumberOfDistinctQuoteCharacters(quoteTable[i].open1); |
| checkNumberOfDistinctQuoteCharacters(quoteTable[i].close1); |
| checkNumberOfDistinctQuoteCharacters(quoteTable[i].open2); |
| checkNumberOfDistinctQuoteCharacters(quoteTable[i].close2); |
| } |
| } |
| #endif // ASSERT_ENABLED |
| |
| unsigned length = language.length(); |
| if (!length) |
| return nullptr; |
| |
| Vector<char> languageKeyBuffer(length + 1); |
| for (unsigned i = 0; i < length; ++i) { |
| UChar character = toASCIILower(language[i]); |
| if (!(isASCIILower(character) || character == '-')) |
| return nullptr; |
| languageKeyBuffer[i] = static_cast<char>(character); |
| } |
| languageKeyBuffer[length] = 0; |
| |
| QuotesForLanguage languageKey = { languageKeyBuffer.data(), 0, 0, 0, 0, 0 }; |
| |
| return static_cast<const QuotesForLanguage*>(bsearch(&languageKey, |
| quoteTable, WTF_ARRAY_LENGTH(quoteTable), sizeof(quoteTable[0]), quoteTableLanguageComparisonFunction)); |
| } |
| |
| static StringImpl* stringForQuoteCharacter(UChar character) |
| { |
| // Use linear search because there is a small number of distinct characters, thus binary search is unneeded. |
| ASSERT(character); |
| struct StringForCharacter { |
| UChar character; |
| StringImpl* string; |
| }; |
| static StringForCharacter strings[maxDistinctQuoteCharacters]; |
| for (unsigned i = 0; i < maxDistinctQuoteCharacters; ++i) { |
| if (strings[i].character == character) |
| return strings[i].string; |
| if (!strings[i].character) { |
| strings[i].character = character; |
| strings[i].string = &StringImpl::create8BitIfPossible(&character, 1).leakRef(); |
| return strings[i].string; |
| } |
| } |
| ASSERT_NOT_REACHED(); |
| return StringImpl::empty(); |
| } |
| |
| static inline StringImpl* quotationMarkString() |
| { |
| static StringImpl* quotationMarkString = stringForQuoteCharacter(quotationMark); |
| return quotationMarkString; |
| } |
| |
| static inline StringImpl* apostropheString() |
| { |
| static StringImpl* apostropheString = stringForQuoteCharacter(apostrophe); |
| return apostropheString; |
| } |
| |
| static RenderTextFragment* quoteTextRenderer(RenderObject* lastChild) |
| { |
| if (!lastChild) |
| return nullptr; |
| |
| if (!is<RenderTextFragment>(lastChild)) |
| return nullptr; |
| |
| return downcast<RenderTextFragment>(lastChild); |
| } |
| |
| void RenderQuote::updateTextRenderer(RenderTreeBuilder& builder) |
| { |
| ASSERT_WITH_SECURITY_IMPLICATION(document().inRenderTreeUpdate()); |
| String text = computeText(); |
| if (m_text == text) |
| return; |
| m_text = text; |
| if (auto* renderText = quoteTextRenderer(lastChild())) { |
| renderText->setContentString(m_text); |
| renderText->dirtyLineBoxes(false); |
| return; |
| } |
| builder.attach(*this, createRenderer<RenderTextFragment>(document(), m_text)); |
| } |
| |
| String RenderQuote::computeText() const |
| { |
| if (m_depth < 0) |
| return emptyString(); |
| bool isOpenQuote = false; |
| switch (m_type) { |
| case QuoteType::NoOpenQuote: |
| case QuoteType::NoCloseQuote: |
| return emptyString(); |
| case QuoteType::OpenQuote: |
| isOpenQuote = true; |
| FALLTHROUGH; |
| case QuoteType::CloseQuote: |
| if (const auto* quotes = style().quotes()) |
| return isOpenQuote ? quotes->openQuote(m_depth).impl() : quotes->closeQuote(m_depth).impl(); |
| if (const auto* quotes = quotesForLanguage(style().computedLocale())) |
| return stringForQuoteCharacter(isOpenQuote ? (m_depth ? quotes->open2 : quotes->open1) : (m_depth ? quotes->close2 : quotes->close1)); |
| // FIXME: Should the default be the quotes for "en" rather than straight quotes? |
| // (According to https://html.spec.whatwg.org/multipage/rendering.html#quotes, the answer is "yes".) |
| return m_depth ? apostropheString() : quotationMarkString(); |
| } |
| ASSERT_NOT_REACHED(); |
| return emptyString(); |
| } |
| |
| bool RenderQuote::isOpen() const |
| { |
| switch (m_type) { |
| case QuoteType::OpenQuote: |
| case QuoteType::NoOpenQuote: |
| return true; |
| case QuoteType::CloseQuote: |
| case QuoteType::NoCloseQuote: |
| return false; |
| } |
| ASSERT_NOT_REACHED(); |
| return false; |
| } |
| |
| void RenderQuote::updateRenderer(RenderTreeBuilder& builder, RenderQuote* previousQuote) |
| { |
| ASSERT_WITH_SECURITY_IMPLICATION(document().inRenderTreeUpdate()); |
| int depth = -1; |
| if (previousQuote) { |
| depth = previousQuote->m_depth; |
| if (previousQuote->isOpen()) |
| ++depth; |
| } |
| |
| if (!isOpen()) |
| --depth; |
| else if (depth < 0) |
| depth = 0; |
| |
| if (m_depth == depth && !m_needsTextUpdate) |
| return; |
| |
| m_depth = depth; |
| m_needsTextUpdate = false; |
| updateTextRenderer(builder); |
| } |
| |
| } // namespace WebCore |
