| /* |
| * 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 "core/dom/CharacterData.h" |
| |
| #include "bindings/core/v8/ExceptionState.h" |
| #include "core/dom/Document.h" |
| #include "core/dom/ExceptionCode.h" |
| #include "core/dom/MutationObserverInterestGroup.h" |
| #include "core/dom/MutationRecord.h" |
| #include "core/dom/ProcessingInstruction.h" |
| #include "core/dom/Text.h" |
| #include "core/editing/FrameSelection.h" |
| #include "core/events/MutationEvent.h" |
| #include "core/inspector/InspectorInstrumentation.h" |
| #include "wtf/CheckedNumeric.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; |
| |
| unsigned oldLength = length(); |
| |
| setDataAndUpdate(nonNullData, 0, oldLength, nonNullData.length(), |
| UpdateFromNonParser); |
| 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& data) { |
| String newStr = m_data + data; |
| |
| setDataAndUpdate(newStr, m_data.length(), 0, data.length(), UpdateFromParser); |
| } |
| |
| void CharacterData::appendData(const String& data) { |
| String newStr = m_data + data; |
| |
| setDataAndUpdate(newStr, m_data.length(), 0, data.length(), |
| UpdateFromNonParser); |
| |
| // FIXME: Should we call textInserted here? |
| } |
| |
| void CharacterData::insertData(unsigned offset, |
| const String& data, |
| 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 newStr = m_data; |
| newStr.insert(data, offset); |
| |
| setDataAndUpdate(newStr, offset, 0, data.length(), UpdateFromNonParser); |
| |
| 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; |
| } |
| |
| CheckedNumeric<unsigned> offsetCount = offset; |
| offsetCount += count; |
| |
| if (!offsetCount.IsValid() || offset + count > length) |
| realCount = length - offset; |
| else |
| realCount = count; |
| |
| return true; |
| } |
| |
| void CharacterData::deleteData(unsigned offset, |
| unsigned count, |
| ExceptionState& exceptionState) { |
| unsigned realCount = 0; |
| if (!validateOffsetCount(offset, count, length(), realCount, exceptionState)) |
| return; |
| |
| String newStr = m_data; |
| newStr.remove(offset, realCount); |
| |
| setDataAndUpdate(newStr, offset, realCount, 0, UpdateFromNonParser); |
| |
| 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(), |
| UpdateFromNonParser); |
| |
| // update the markers for spell checking and grammar checking |
| document().didRemoveText(this, offset, realCount); |
| document().didInsertText(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) { |
| setData(nodeValue); |
| } |
| |
| void CharacterData::setDataAndUpdate(const String& newData, |
| unsigned offsetOfReplacedData, |
| unsigned oldLength, |
| unsigned newLength, |
| UpdateSource source) { |
| if (source != UpdateFromParser) |
| document().dataWillChange(*this); |
| |
| String oldData = m_data; |
| m_data = newData; |
| |
| DCHECK(!layoutObject() || isTextNode()); |
| if (isTextNode()) |
| toText(this)->updateTextLayoutObject(offsetOfReplacedData, oldLength); |
| |
| if (source != UpdateFromParser) { |
| if (getNodeType() == kProcessingInstructionNode) |
| toProcessingInstruction(this)->didAttributeChanged(); |
| |
| document().notifyUpdateCharacterData(this, offsetOfReplacedData, oldLength, |
| newLength); |
| |
| if (document().frame()) |
| document().frame()->selection().didUpdateCharacterData( |
| this, offsetOfReplacedData, oldLength, newLength); |
| } |
| |
| document().incDOMTreeVersion(); |
| didModifyData(oldData, source); |
| } |
| |
| void CharacterData::didModifyData(const String& oldData, UpdateSource source) { |
| if (MutationObserverInterestGroup* mutationRecipients = |
| MutationObserverInterestGroup::createForCharacterDataMutation(*this)) |
| mutationRecipients->enqueueMutationRecord( |
| MutationRecord::createCharacterData(this, oldData)); |
| |
| if (parentNode()) { |
| ContainerNode::ChildrenChange change = { |
| ContainerNode::TextChanged, this, previousSibling(), nextSibling(), |
| ContainerNode::ChildrenChangeSourceAPI}; |
| parentNode()->childrenChanged(change); |
| } |
| |
| // Skip DOM mutation events if the modification is from parser. |
| // Note that mutation observer events will still fire. |
| // Spec: https://html.spec.whatwg.org/multipage/syntax.html#insert-a-character |
| if (source != UpdateFromParser && !isInShadowTree()) { |
| if (document().hasListenerType(Document::DOMCHARACTERDATAMODIFIED_LISTENER)) |
| dispatchScopedEvent( |
| MutationEvent::create(EventTypeNames::DOMCharacterDataModified, true, |
| nullptr, oldData, m_data)); |
| dispatchSubtreeModifiedEvent(); |
| } |
| InspectorInstrumentation::characterDataModified(this); |
| } |
| |
| int CharacterData::maxCharacterOffset() const { |
| return static_cast<int>(length()); |
| } |
| |
| } // namespace blink |