| /** |
| * Copyright (C) 2011 Nokia Inc. All rights reserved. |
| * Copyright (C) 2012 Google 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 "core/layout/LayoutQuote.h" |
| |
| #include "core/dom/PseudoElement.h" |
| #include "core/layout/LayoutTextFragment.h" |
| #include "core/layout/LayoutView.h" |
| #include "platform/wtf/StdLibExtras.h" |
| #include "platform/wtf/text/AtomicString.h" |
| |
| #include <algorithm> |
| |
| namespace blink { |
| |
| LayoutQuote::LayoutQuote(PseudoElement& pseudo, QuoteType quote) |
| : LayoutInline(nullptr), |
| type_(quote), |
| depth_(0), |
| next_(nullptr), |
| previous_(nullptr), |
| owning_pseudo_(&pseudo), |
| attached_(false) { |
| SetDocumentForAnonymous(&pseudo.GetDocument()); |
| } |
| |
| LayoutQuote::~LayoutQuote() { |
| DCHECK(!attached_); |
| DCHECK(!next_); |
| DCHECK(!previous_); |
| } |
| |
| void LayoutQuote::WillBeDestroyed() { |
| DetachQuote(); |
| LayoutInline::WillBeDestroyed(); |
| } |
| |
| void LayoutQuote::WillBeRemovedFromTree() { |
| LayoutInline::WillBeRemovedFromTree(); |
| DetachQuote(); |
| } |
| |
| void LayoutQuote::StyleDidChange(StyleDifference diff, |
| const ComputedStyle* old_style) { |
| LayoutInline::StyleDidChange(diff, old_style); |
| UpdateText(); |
| } |
| |
| struct Language { |
| const char* lang; |
| UChar open1; |
| UChar close1; |
| UChar open2; |
| UChar close2; |
| QuotesData* data; |
| |
| bool operator<(const Language& b) const { return strcmp(lang, b.lang) < 0; } |
| }; |
| |
| // Table of quotes from |
| // http://www.whatwg.org/specs/web-apps/current-work/multipage/rendering.html#quote |
| Language g_languages[] = { |
| {"af", 0x201c, 0x201d, 0x2018, 0x2019, 0}, |
| {"agq", 0x201e, 0x201d, 0x201a, 0x2019, 0}, |
| {"ak", 0x201c, 0x201d, 0x2018, 0x2019, 0}, |
| {"am", 0x00ab, 0x00bb, 0x2039, 0x203a, 0}, |
| {"ar", 0x201d, 0x201c, 0x2019, 0x2018, 0}, |
| {"asa", 0x201c, 0x201d, 0x2018, 0x2019, 0}, |
| {"az-cyrl", 0x00ab, 0x00bb, 0x2039, 0x203a, 0}, |
| {"bas", 0x00ab, 0x00bb, 0x201e, 0x201c, 0}, |
| {"bem", 0x201c, 0x201d, 0x2018, 0x2019, 0}, |
| {"bez", 0x201c, 0x201d, 0x2018, 0x2019, 0}, |
| {"bg", 0x201e, 0x201c, 0x201a, 0x2018, 0}, |
| {"bm", 0x00ab, 0x00bb, 0x201c, 0x201d, 0}, |
| {"bn", 0x201c, 0x201d, 0x2018, 0x2019, 0}, |
| {"br", 0x00ab, 0x00bb, 0x2039, 0x203a, 0}, |
| {"brx", 0x201c, 0x201d, 0x2018, 0x2019, 0}, |
| {"bs-cyrl", 0x201e, 0x201c, 0x201a, 0x2018, 0}, |
| {"ca", 0x201c, 0x201d, 0x00ab, 0x00bb, 0}, |
| {"cgg", 0x201c, 0x201d, 0x2018, 0x2019, 0}, |
| {"chr", 0x201c, 0x201d, 0x2018, 0x2019, 0}, |
| {"cs", 0x201e, 0x201c, 0x201a, 0x2018, 0}, |
| {"da", 0x201c, 0x201d, 0x2018, 0x2019, 0}, |
| {"dav", 0x201c, 0x201d, 0x2018, 0x2019, 0}, |
| {"de", 0x201e, 0x201c, 0x201a, 0x2018, 0}, |
| {"de-ch", 0x00ab, 0x00bb, 0x2039, 0x203a, 0}, |
| {"dje", 0x201c, 0x201d, 0x2018, 0x2019, 0}, |
| {"dua", 0x00ab, 0x00bb, 0x2018, 0x2019, 0}, |
| {"dyo", 0x00ab, 0x00bb, 0x201c, 0x201d, 0}, |
| {"dz", 0x201c, 0x201d, 0x2018, 0x2019, 0}, |
| {"ebu", 0x201c, 0x201d, 0x2018, 0x2019, 0}, |
| {"ee", 0x201c, 0x201d, 0x2018, 0x2019, 0}, |
| {"el", 0x00ab, 0x00bb, 0x201c, 0x201d, 0}, |
| {"en", 0x201c, 0x201d, 0x2018, 0x2019, 0}, |
| {"en-gb", 0x201c, 0x201d, 0x2018, 0x2019, 0}, |
| {"es", 0x201c, 0x201d, 0x00ab, 0x00bb, 0}, |
| {"et", 0x201e, 0x201c, 0x201a, 0x2018, 0}, |
| {"eu", 0x201c, 0x201d, 0x00ab, 0x00bb, 0}, |
| {"ewo", 0x00ab, 0x00bb, 0x201c, 0x201d, 0}, |
| {"fa", 0x00ab, 0x00bb, 0x2039, 0x203a, 0}, |
| {"ff", 0x201e, 0x201d, 0x201a, 0x2019, 0}, |
| {"fi", 0x201d, 0x201d, 0x2019, 0x2019, 0}, |
| {"fr", 0x00ab, 0x00bb, 0x00ab, 0x00bb, 0}, |
| {"fr-ca", 0x00ab, 0x00bb, 0x2039, 0x203a, 0}, |
| {"fr-ch", 0x00ab, 0x00bb, 0x2039, 0x203a, 0}, |
| {"gsw", 0x00ab, 0x00bb, 0x2039, 0x203a, 0}, |
| {"gu", 0x201c, 0x201d, 0x2018, 0x2019, 0}, |
| {"guz", 0x201c, 0x201d, 0x2018, 0x2019, 0}, |
| {"ha", 0x201c, 0x201d, 0x2018, 0x2019, 0}, |
| {"he", 0x0022, 0x0022, 0x0027, 0x0027, 0}, |
| {"hi", 0x201c, 0x201d, 0x2018, 0x2019, 0}, |
| {"hr", 0x201e, 0x201c, 0x201a, 0x2018, 0}, |
| {"hu", 0x201e, 0x201d, 0x00bb, 0x00ab, 0}, |
| {"id", 0x201c, 0x201d, 0x2018, 0x2019, 0}, |
| {"ig", 0x201c, 0x201d, 0x2018, 0x2019, 0}, |
| {"it", 0x00ab, 0x00bb, 0x201c, 0x201d, 0}, |
| {"ja", 0x300c, 0x300d, 0x300e, 0x300f, 0}, |
| {"jgo", 0x00ab, 0x00bb, 0x2039, 0x203a, 0}, |
| {"jmc", 0x201c, 0x201d, 0x2018, 0x2019, 0}, |
| {"kab", 0x00ab, 0x00bb, 0x201c, 0x201d, 0}, |
| {"kam", 0x201c, 0x201d, 0x2018, 0x2019, 0}, |
| {"kde", 0x201c, 0x201d, 0x2018, 0x2019, 0}, |
| {"kea", 0x201c, 0x201d, 0x2018, 0x2019, 0}, |
| {"khq", 0x201c, 0x201d, 0x2018, 0x2019, 0}, |
| {"ki", 0x201c, 0x201d, 0x2018, 0x2019, 0}, |
| {"kkj", 0x00ab, 0x00bb, 0x2039, 0x203a, 0}, |
| {"kln", 0x201c, 0x201d, 0x2018, 0x2019, 0}, |
| {"km", 0x201c, 0x201d, 0x2018, 0x2019, 0}, |
| {"kn", 0x201c, 0x201d, 0x2018, 0x2019, 0}, |
| {"ko", 0x201c, 0x201d, 0x2018, 0x2019, 0}, |
| {"ksb", 0x201c, 0x201d, 0x2018, 0x2019, 0}, |
| {"ksf", 0x00ab, 0x00bb, 0x2018, 0x2019, 0}, |
| {"lag", 0x201d, 0x201d, 0x2019, 0x2019, 0}, |
| {"lg", 0x201c, 0x201d, 0x2018, 0x2019, 0}, |
| {"ln", 0x201c, 0x201d, 0x2018, 0x2019, 0}, |
| {"lo", 0x201c, 0x201d, 0x2018, 0x2019, 0}, |
| {"lt", 0x201e, 0x201c, 0x201e, 0x201c, 0}, |
| {"lu", 0x201c, 0x201d, 0x2018, 0x2019, 0}, |
| {"luo", 0x201c, 0x201d, 0x2018, 0x2019, 0}, |
| {"luy", 0x201e, 0x201c, 0x201a, 0x2018, 0}, |
| {"lv", 0x201c, 0x201d, 0x2018, 0x2019, 0}, |
| {"mas", 0x201c, 0x201d, 0x2018, 0x2019, 0}, |
| {"mer", 0x201c, 0x201d, 0x2018, 0x2019, 0}, |
| {"mfe", 0x201c, 0x201d, 0x2018, 0x2019, 0}, |
| {"mg", 0x00ab, 0x00bb, 0x201c, 0x201d, 0}, |
| {"mgo", 0x201c, 0x201d, 0x2018, 0x2019, 0}, |
| {"mk", 0x201e, 0x201c, 0x201a, 0x2018, 0}, |
| {"ml", 0x201c, 0x201d, 0x2018, 0x2019, 0}, |
| {"mr", 0x201c, 0x201d, 0x2018, 0x2019, 0}, |
| {"ms", 0x201c, 0x201d, 0x2018, 0x2019, 0}, |
| {"mua", 0x00ab, 0x00bb, 0x201c, 0x201d, 0}, |
| {"my", 0x201c, 0x201d, 0x2018, 0x2019, 0}, |
| {"naq", 0x201c, 0x201d, 0x2018, 0x2019, 0}, |
| {"nb", 0x00ab, 0x00bb, 0x2018, 0x2019, 0}, |
| {"nd", 0x201c, 0x201d, 0x2018, 0x2019, 0}, |
| {"nl", 0x201c, 0x201d, 0x2018, 0x2019, 0}, |
| {"nmg", 0x201e, 0x201d, 0x00ab, 0x00bb, 0}, |
| {"nn", 0x00ab, 0x00bb, 0x2018, 0x2019, 0}, |
| {"nnh", 0x00ab, 0x00bb, 0x201c, 0x201d, 0}, |
| {"nus", 0x201c, 0x201d, 0x2018, 0x2019, 0}, |
| {"nyn", 0x201c, 0x201d, 0x2018, 0x2019, 0}, |
| {"pl", 0x201e, 0x201d, 0x00ab, 0x00bb, 0}, |
| {"pt", 0x201c, 0x201d, 0x2018, 0x2019, 0}, |
| {"pt-pt", 0x00ab, 0x00bb, 0x201c, 0x201d, 0}, |
| {"rn", 0x201d, 0x201d, 0x2019, 0x2019, 0}, |
| {"ro", 0x201e, 0x201d, 0x00ab, 0x00bb, 0}, |
| {"rof", 0x201c, 0x201d, 0x2018, 0x2019, 0}, |
| {"ru", 0x00ab, 0x00bb, 0x201e, 0x201c, 0}, |
| {"rw", 0x00ab, 0x00bb, 0x2018, 0x2019, 0}, |
| {"rwk", 0x201c, 0x201d, 0x2018, 0x2019, 0}, |
| {"saq", 0x201c, 0x201d, 0x2018, 0x2019, 0}, |
| {"sbp", 0x201c, 0x201d, 0x2018, 0x2019, 0}, |
| {"seh", 0x201c, 0x201d, 0x2018, 0x2019, 0}, |
| {"ses", 0x201c, 0x201d, 0x2018, 0x2019, 0}, |
| {"sg", 0x00ab, 0x00bb, 0x201c, 0x201d, 0}, |
| {"shi", 0x00ab, 0x00bb, 0x201e, 0x201d, 0}, |
| {"shi-tfng", 0x00ab, 0x00bb, 0x201e, 0x201d, 0}, |
| {"si", 0x201c, 0x201d, 0x2018, 0x2019, 0}, |
| {"sk", 0x201e, 0x201c, 0x201a, 0x2018, 0}, |
| {"sl", 0x201e, 0x201c, 0x201a, 0x2018, 0}, |
| {"sn", 0x201d, 0x201d, 0x2019, 0x2019, 0}, |
| {"so", 0x201c, 0x201d, 0x2018, 0x2019, 0}, |
| {"sq", 0x201e, 0x201c, 0x201a, 0x2018, 0}, |
| {"sr", 0x201e, 0x201c, 0x201a, 0x2018, 0}, |
| {"sr-latn", 0x201e, 0x201c, 0x201a, 0x2018, 0}, |
| {"sv", 0x201d, 0x201d, 0x2019, 0x2019, 0}, |
| {"sw", 0x201c, 0x201d, 0x2018, 0x2019, 0}, |
| {"swc", 0x201c, 0x201d, 0x2018, 0x2019, 0}, |
| {"ta", 0x201c, 0x201d, 0x2018, 0x2019, 0}, |
| {"te", 0x201c, 0x201d, 0x2018, 0x2019, 0}, |
| {"teo", 0x201c, 0x201d, 0x2018, 0x2019, 0}, |
| {"th", 0x201c, 0x201d, 0x2018, 0x2019, 0}, |
| {"ti-er", 0x2018, 0x2019, 0x201c, 0x201d, 0}, |
| {"to", 0x201c, 0x201d, 0x2018, 0x2019, 0}, |
| {"tr", 0x201c, 0x201d, 0x2018, 0x2019, 0}, |
| {"twq", 0x201c, 0x201d, 0x2018, 0x2019, 0}, |
| {"tzm", 0x201c, 0x201d, 0x2018, 0x2019, 0}, |
| {"uk", 0x00ab, 0x00bb, 0x201e, 0x201c, 0}, |
| {"ur", 0x201d, 0x201c, 0x2019, 0x2018, 0}, |
| {"vai", 0x201c, 0x201d, 0x2018, 0x2019, 0}, |
| {"vai-latn", 0x201c, 0x201d, 0x2018, 0x2019, 0}, |
| {"vi", 0x201c, 0x201d, 0x2018, 0x2019, 0}, |
| {"vun", 0x201c, 0x201d, 0x2018, 0x2019, 0}, |
| {"xh", 0x2018, 0x2019, 0x201c, 0x201d, 0}, |
| {"xog", 0x201c, 0x201d, 0x2018, 0x2019, 0}, |
| {"yav", 0x00ab, 0x00bb, 0x00ab, 0x00bb, 0}, |
| {"yo", 0x201c, 0x201d, 0x2018, 0x2019, 0}, |
| {"zh", 0x201c, 0x201d, 0x2018, 0x2019, 0}, |
| {"zh-hant", 0x300c, 0x300d, 0x300e, 0x300f, 0}, |
| {"zu", 0x201c, 0x201d, 0x2018, 0x2019, 0}, |
| }; |
| |
| const QuotesData* QuotesDataForLanguage(const AtomicString& lang) { |
| if (lang.IsNull()) |
| return nullptr; |
| |
| // This could be just a hash table, but doing that adds 200k to LayoutQuote.o |
| Language* languages_end = g_languages + WTF_ARRAY_LENGTH(g_languages); |
| CString lowercase_lang = lang.DeprecatedLower().Utf8(); |
| Language key = {lowercase_lang.data(), 0, 0, 0, 0, 0}; |
| Language* match = std::lower_bound(g_languages, languages_end, key); |
| if (match == languages_end || strcmp(match->lang, key.lang)) |
| return nullptr; |
| |
| if (!match->data) |
| match->data = QuotesData::Create(match->open1, match->close1, match->open2, |
| match->close2) |
| .LeakRef(); |
| |
| return match->data; |
| } |
| |
| static const QuotesData* BasicQuotesData() { |
| // FIXME: The default quotes should be the fancy quotes for "en". |
| DEFINE_STATIC_REF(QuotesData, static_basic_quotes, |
| (QuotesData::Create('"', '"', '\'', '\''))); |
| return static_basic_quotes; |
| } |
| |
| void LayoutQuote::UpdateText() { |
| String text = ComputeText(); |
| if (text_ == text) |
| return; |
| |
| text_ = text; |
| |
| LayoutTextFragment* fragment = FindFragmentChild(); |
| if (fragment) { |
| fragment->SetStyle(MutableStyle()); |
| fragment->SetContentString(text_.Impl()); |
| } else { |
| fragment = |
| LayoutTextFragment::CreateAnonymous(*owning_pseudo_, text_.Impl()); |
| fragment->SetStyle(MutableStyle()); |
| AddChild(fragment); |
| } |
| } |
| |
| LayoutTextFragment* LayoutQuote::FindFragmentChild() const { |
| // We walk from the end of the child list because, if we've had a first-letter |
| // LayoutObject inserted then the remaining text will be at the end. |
| while (LayoutObject* child = LastChild()) { |
| if (child->IsText() && ToLayoutText(child)->IsTextFragment()) |
| return ToLayoutTextFragment(child); |
| } |
| |
| return nullptr; |
| } |
| |
| String LayoutQuote::ComputeText() const { |
| switch (type_) { |
| case NO_OPEN_QUOTE: |
| case NO_CLOSE_QUOTE: |
| return g_empty_string; |
| case CLOSE_QUOTE: |
| return GetQuotesData()->GetCloseQuote(depth_ - 1).Impl(); |
| case OPEN_QUOTE: |
| return GetQuotesData()->GetOpenQuote(depth_).Impl(); |
| } |
| NOTREACHED(); |
| return g_empty_string; |
| } |
| |
| const QuotesData* LayoutQuote::GetQuotesData() const { |
| if (const QuotesData* custom_quotes = Style()->Quotes()) |
| return custom_quotes; |
| |
| if (const QuotesData* quotes = QuotesDataForLanguage(Style()->Locale())) |
| return quotes; |
| |
| return BasicQuotesData(); |
| } |
| |
| void LayoutQuote::AttachQuote() { |
| DCHECK(View()); |
| DCHECK(!attached_); |
| DCHECK(!next_); |
| DCHECK(!previous_); |
| DCHECK(IsRooted()); |
| |
| if (!View()->LayoutQuoteHead()) { |
| View()->SetLayoutQuoteHead(this); |
| attached_ = true; |
| return; |
| } |
| |
| for (LayoutObject* predecessor = PreviousInPreOrder(); predecessor; |
| predecessor = predecessor->PreviousInPreOrder()) { |
| // Skip unattached predecessors to avoid having stale m_previous pointers |
| // if the previous node is never attached and is then destroyed. |
| if (!predecessor->IsQuote() || !ToLayoutQuote(predecessor)->IsAttached()) |
| continue; |
| previous_ = ToLayoutQuote(predecessor); |
| next_ = previous_->next_; |
| previous_->next_ = this; |
| if (next_) |
| next_->previous_ = this; |
| break; |
| } |
| |
| if (!previous_) { |
| next_ = View()->LayoutQuoteHead(); |
| View()->SetLayoutQuoteHead(this); |
| if (next_) |
| next_->previous_ = this; |
| } |
| attached_ = true; |
| |
| for (LayoutQuote* quote = this; quote; quote = quote->next_) |
| quote->UpdateDepth(); |
| |
| DCHECK(!next_ || next_->attached_); |
| DCHECK(!next_ || next_->previous_ == this); |
| DCHECK(!previous_ || previous_->attached_); |
| DCHECK(!previous_ || previous_->next_ == this); |
| } |
| |
| void LayoutQuote::DetachQuote() { |
| DCHECK(!next_ || next_->attached_); |
| DCHECK(!previous_ || previous_->attached_); |
| if (!attached_) |
| return; |
| |
| // Reset our attached status at this point because it's possible for |
| // updateDepth() to call into attachQuote(). Attach quote walks the layout |
| // tree looking for quotes that are attached and does work on them. |
| attached_ = false; |
| |
| if (previous_) |
| previous_->next_ = next_; |
| else if (View()) |
| View()->SetLayoutQuoteHead(next_); |
| if (next_) |
| next_->previous_ = previous_; |
| if (!DocumentBeingDestroyed()) { |
| for (LayoutQuote* quote = next_; quote; quote = quote->next_) |
| quote->UpdateDepth(); |
| } |
| next_ = nullptr; |
| previous_ = nullptr; |
| depth_ = 0; |
| } |
| |
| void LayoutQuote::UpdateDepth() { |
| DCHECK(attached_); |
| int old_depth = depth_; |
| depth_ = 0; |
| if (previous_) { |
| depth_ = previous_->depth_; |
| switch (previous_->type_) { |
| case OPEN_QUOTE: |
| case NO_OPEN_QUOTE: |
| depth_++; |
| break; |
| case CLOSE_QUOTE: |
| case NO_CLOSE_QUOTE: |
| if (depth_) |
| depth_--; |
| break; |
| } |
| } |
| if (old_depth != depth_) |
| UpdateText(); |
| } |
| |
| } // namespace blink |