| /* |
| * Copyright (C) 1999 Lars Knoll (knoll@kde.org) |
| * (C) 1999 Antti Koivisto (koivisto@kde.org) |
| * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2013 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 "sky/engine/core/dom/CharacterData.h" |
| |
| #include "sky/engine/bindings/exception_state.h" |
| #include "sky/engine/core/dom/Document.h" |
| #include "sky/engine/core/dom/ExceptionCode.h" |
| #include "sky/engine/core/dom/MutationObserverInterestGroup.h" |
| #include "sky/engine/core/dom/MutationRecord.h" |
| #include "sky/engine/core/dom/Text.h" |
| #include "sky/engine/core/frame/LocalFrame.h" |
| #include "sky/engine/wtf/CheckedArithmetic.h" |
| |
| namespace blink { |
| |
| void CharacterData::atomize() |
| { |
| m_data = AtomicString(m_data); |
| } |
| |
| void CharacterData::setData(const String& data) |
| { |
| 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().didRemoveText(this, 0, oldLength); |
| } |
| |
| String CharacterData::substringData(unsigned offset, unsigned count, ExceptionState& exceptionState) |
| { |
| if (offset > length()) { |
| exceptionState.ThrowDOMException(IndexSizeError, "The offset " + String::number(offset) + " is greater than the node's length (" + String::number(length()) + ")."); |
| return String(); |
| } |
| |
| return m_data.substring(offset, count); |
| } |
| |
| void CharacterData::parserAppendData(const String& string) |
| { |
| unsigned oldLength = m_data.length(); |
| m_data = m_data + string; |
| |
| ASSERT(!renderer() || isTextNode()); |
| if (isTextNode()) |
| toText(this)->updateTextRenderer(oldLength, 0); |
| |
| if (parentNode()) { |
| ContainerNode::ChildrenChange change = {ContainerNode::TextChanged, ContainerNode::ChildrenChangeSourceParser}; |
| parentNode()->childrenChanged(change); |
| } |
| } |
| |
| void CharacterData::appendData(const String& data) |
| { |
| String newStr = m_data + data; |
| |
| setDataAndUpdate(newStr, m_data.length(), 0, data.length()); |
| |
| // FIXME: Should we call textInserted here? |
| } |
| |
| void CharacterData::insertData(unsigned offset, const String& data, ExceptionState& exceptionState, RecalcStyleBehavior recalcStyleBehavior) |
| { |
| if (offset > length()) { |
| exceptionState.ThrowDOMException(IndexSizeError, "The offset " + String::number(offset) + " is greater than the node's length (" + String::number(length()) + ")."); |
| return; |
| } |
| |
| String newStr = m_data; |
| newStr.insert(data, offset); |
| |
| setDataAndUpdate(newStr, offset, 0, data.length(), recalcStyleBehavior); |
| |
| document().didInsertText(this, offset, data.length()); |
| } |
| |
| static bool validateOffsetCount(unsigned offset, unsigned count, unsigned length, unsigned& realCount, ExceptionState& exceptionState) |
| { |
| if (offset > length) { |
| exceptionState.ThrowDOMException(IndexSizeError, "The offset " + String::number(offset) + " is greater than the node's length (" + String::number(length) + ")."); |
| return false; |
| } |
| |
| Checked<unsigned, RecordOverflow> offsetCount = offset; |
| offsetCount += count; |
| |
| if (offsetCount.hasOverflowed() || offset + count > length) |
| realCount = length - offset; |
| else |
| realCount = count; |
| |
| return true; |
| } |
| |
| void CharacterData::deleteData(unsigned offset, unsigned count, ExceptionState& exceptionState, RecalcStyleBehavior recalcStyleBehavior) |
| { |
| unsigned realCount = 0; |
| if (!validateOffsetCount(offset, count, length(), realCount, exceptionState)) |
| return; |
| |
| String newStr = m_data; |
| newStr.remove(offset, realCount); |
| |
| setDataAndUpdate(newStr, offset, realCount, 0, recalcStyleBehavior); |
| |
| document().didRemoveText(this, offset, realCount); |
| } |
| |
| void CharacterData::replaceData(unsigned offset, unsigned count, const String& data, ExceptionState& exceptionState) |
| { |
| unsigned realCount = 0; |
| if (!validateOffsetCount(offset, count, length(), realCount, exceptionState)) |
| return; |
| |
| String newStr = m_data; |
| newStr.remove(offset, realCount); |
| newStr.insert(data, offset); |
| |
| setDataAndUpdate(newStr, offset, realCount, data.length()); |
| |
| // update the markers for spell checking and grammar checking |
| document().didRemoveText(this, offset, realCount); |
| document().didInsertText(this, offset, data.length()); |
| } |
| |
| bool CharacterData::containsOnlyWhitespace() const |
| { |
| return m_data.containsOnlyWhitespace(); |
| } |
| |
| void CharacterData::setDataAndUpdate(const String& newData, unsigned offsetOfReplacedData, unsigned oldLength, unsigned newLength, RecalcStyleBehavior recalcStyleBehavior) |
| { |
| String oldData = m_data; |
| m_data = newData; |
| |
| ASSERT(!renderer() || isTextNode()); |
| if (isTextNode()) |
| toText(this)->updateTextRenderer(offsetOfReplacedData, oldLength, recalcStyleBehavior); |
| |
| didModifyData(oldData); |
| } |
| |
| void CharacterData::didModifyData(const String& oldData) |
| { |
| if (OwnPtr<MutationObserverInterestGroup> mutationRecipients = MutationObserverInterestGroup::createForCharacterDataMutation(*this)) |
| mutationRecipients->enqueueMutationRecord(MutationRecord::createCharacterData(this, oldData)); |
| |
| if (parentNode()) { |
| ContainerNode::ChildrenChange change = {ContainerNode::TextChanged, ContainerNode::ChildrenChangeSourceAPI}; |
| parentNode()->childrenChanged(change); |
| } |
| } |
| |
| int CharacterData::maxCharacterOffset() const |
| { |
| return static_cast<int>(length()); |
| } |
| |
| bool CharacterData::offsetInCharacters() const |
| { |
| return true; |
| } |
| |
| } // namespace blink |