| /* |
| * Copyright (C) 1999 Lars Knoll (knoll@kde.org) |
| * (C) 1999 Antti Koivisto (koivisto@kde.org) |
| * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009 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 "core/dom/CharacterData.h" |
| |
| #include "core/dom/Document.h" |
| #include "core/dom/EventNames.h" |
| #include "core/dom/ExceptionCode.h" |
| #include "core/dom/MutationEvent.h" |
| #include "core/dom/MutationObserverInterestGroup.h" |
| #include "core/dom/MutationRecord.h" |
| #include "core/dom/NodeRenderingContext.h" |
| #include "core/dom/Text.h" |
| #include "core/dom/WebCoreMemoryInstrumentation.h" |
| #include "core/editing/FrameSelection.h" |
| #include "core/inspector/InspectorInstrumentation.h" |
| #include "core/platform/text/TextBreakIterator.h" |
| #include "core/rendering/RenderText.h" |
| #include "core/rendering/style/StyleInheritedData.h" |
| |
| using namespace std; |
| |
| namespace WebCore { |
| |
| void CharacterData::setData(const String& data, ExceptionCode&) |
| { |
| const String& nonNullData = !data.isNull() ? data : emptyString(); |
| if (m_data == nonNullData) |
| return; |
| |
| RefPtr<CharacterData> protect = this; |
| |
| unsigned oldLength = length(); |
| |
| setDataAndUpdate(nonNullData, 0, oldLength, nonNullData.length()); |
| document()->textRemoved(this, 0, oldLength); |
| } |
| |
| String CharacterData::substringData(unsigned offset, unsigned count, ExceptionCode& ec) |
| { |
| checkCharDataOperation(offset, ec); |
| if (ec) |
| return String(); |
| |
| return m_data.substring(offset, count); |
| } |
| |
| unsigned CharacterData::parserAppendData(const String& string, unsigned offset, unsigned lengthLimit) |
| { |
| unsigned oldLength = m_data.length(); |
| |
| ASSERT(lengthLimit >= oldLength); |
| |
| unsigned characterLength = string.length() - offset; |
| unsigned characterLengthLimit = min(characterLength, lengthLimit - oldLength); |
| |
| // Check that we are not on an unbreakable boundary. |
| // Some text break iterator implementations work best if the passed buffer is as small as possible, |
| // see <https://bugs.webkit.org/show_bug.cgi?id=29092>. |
| // We need at least two characters look-ahead to account for UTF-16 surrogates. |
| if (characterLengthLimit < characterLength) { |
| NonSharedCharacterBreakIterator it(string.characters() + offset, (characterLengthLimit + 2 > characterLength) ? characterLength : characterLengthLimit + 2); |
| if (!isTextBreak(it, characterLengthLimit)) |
| characterLengthLimit = textBreakPreceding(it, characterLengthLimit); |
| } |
| |
| if (!characterLengthLimit) |
| return 0; |
| |
| if (string.is8Bit()) |
| m_data.append(string.characters8() + offset, characterLengthLimit); |
| else |
| m_data.append(string.characters16() + offset, characterLengthLimit); |
| |
| ASSERT(!renderer() || isTextNode()); |
| if (isTextNode()) |
| toText(this)->updateTextRenderer(oldLength, 0); |
| |
| document()->incDOMTreeVersion(); |
| // We don't call dispatchModifiedEvent here because we don't want the |
| // parser to dispatch DOM mutation events. |
| if (parentNode()) |
| parentNode()->childrenChanged(); |
| |
| return characterLengthLimit; |
| } |
| |
| void CharacterData::reportMemoryUsage(MemoryObjectInfo* memoryObjectInfo) const |
| { |
| MemoryClassInfo info(memoryObjectInfo, this, WebCoreMemoryTypes::DOM); |
| Node::reportMemoryUsage(memoryObjectInfo); |
| info.addMember(m_data, "data"); |
| } |
| |
| void CharacterData::appendData(const String& data, ExceptionCode&) |
| { |
| String newStr = m_data; |
| newStr.append(data); |
| |
| setDataAndUpdate(newStr, m_data.length(), 0, data.length()); |
| |
| // FIXME: Should we call textInserted here? |
| } |
| |
| void CharacterData::insertData(unsigned offset, const String& data, ExceptionCode& ec) |
| { |
| checkCharDataOperation(offset, ec); |
| if (ec) |
| return; |
| |
| String newStr = m_data; |
| newStr.insert(data, offset); |
| |
| setDataAndUpdate(newStr, offset, 0, data.length()); |
| |
| document()->textInserted(this, offset, data.length()); |
| } |
| |
| void CharacterData::deleteData(unsigned offset, unsigned count, ExceptionCode& ec) |
| { |
| checkCharDataOperation(offset, ec); |
| if (ec) |
| return; |
| |
| unsigned realCount; |
| if (offset + count > length()) |
| realCount = length() - offset; |
| else |
| realCount = count; |
| |
| String newStr = m_data; |
| newStr.remove(offset, realCount); |
| |
| setDataAndUpdate(newStr, offset, count, 0); |
| |
| document()->textRemoved(this, offset, realCount); |
| } |
| |
| void CharacterData::replaceData(unsigned offset, unsigned count, const String& data, ExceptionCode& ec) |
| { |
| checkCharDataOperation(offset, ec); |
| if (ec) |
| return; |
| |
| unsigned realCount; |
| if (offset + count > length()) |
| realCount = length() - offset; |
| else |
| realCount = count; |
| |
| String newStr = m_data; |
| newStr.remove(offset, realCount); |
| newStr.insert(data, offset); |
| |
| setDataAndUpdate(newStr, offset, count, data.length()); |
| |
| // update the markers for spell checking and grammar checking |
| document()->textRemoved(this, offset, realCount); |
| document()->textInserted(this, offset, data.length()); |
| } |
| |
| String CharacterData::nodeValue() const |
| { |
| return m_data; |
| } |
| |
| bool CharacterData::containsOnlyWhitespace() const |
| { |
| return m_data.containsOnlyWhitespace(); |
| } |
| |
| void CharacterData::setNodeValue(const String& nodeValue, ExceptionCode& ec) |
| { |
| setData(nodeValue, ec); |
| } |
| |
| void CharacterData::setDataAndUpdate(const String& newData, unsigned offsetOfReplacedData, unsigned oldLength, unsigned newLength) |
| { |
| String oldData = m_data; |
| m_data = newData; |
| |
| ASSERT(!renderer() || isTextNode()); |
| if (isTextNode()) |
| toText(this)->updateTextRenderer(offsetOfReplacedData, oldLength); |
| |
| if (document()->frame()) |
| document()->frame()->selection()->textWasReplaced(this, offsetOfReplacedData, oldLength, newLength); |
| |
| document()->incDOMTreeVersion(); |
| dispatchModifiedEvent(oldData); |
| } |
| |
| void CharacterData::dispatchModifiedEvent(const String& oldData) |
| { |
| if (OwnPtr<MutationObserverInterestGroup> mutationRecipients = MutationObserverInterestGroup::createForCharacterDataMutation(this)) |
| mutationRecipients->enqueueMutationRecord(MutationRecord::createCharacterData(this, oldData)); |
| if (!isInShadowTree()) { |
| if (parentNode()) |
| parentNode()->childrenChanged(); |
| if (document()->hasListenerType(Document::DOMCHARACTERDATAMODIFIED_LISTENER)) |
| dispatchScopedEvent(MutationEvent::create(eventNames().DOMCharacterDataModifiedEvent, true, 0, oldData, m_data)); |
| dispatchSubtreeModifiedEvent(); |
| } |
| InspectorInstrumentation::characterDataModified(document(), this); |
| } |
| |
| void CharacterData::checkCharDataOperation(unsigned offset, ExceptionCode& ec) |
| { |
| ec = 0; |
| |
| // INDEX_SIZE_ERR: Raised if the specified offset is negative or greater than the number of 16-bit |
| // units in data. |
| if (offset > length()) { |
| ec = INDEX_SIZE_ERR; |
| return; |
| } |
| } |
| |
| int CharacterData::maxCharacterOffset() const |
| { |
| return static_cast<int>(length()); |
| } |
| |
| bool CharacterData::offsetInCharacters() const |
| { |
| return true; |
| } |
| |
| } // namespace WebCore |