| /** |
| * (C) 1999 Lars Knoll (knoll@kde.org) |
| * (C) 2000 Gunnstein Lye (gunnstein@netcom.no) |
| * (C) 2000 Frederik Holljen (frederik.holljen@hig.no) |
| * (C) 2001 Peter Kelly (pmk@post.com) |
| * Copyright (C) 2004, 2005, 2006, 2007 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 "Range.h" |
| |
| #include "Document.h" |
| #include "DocumentFragment.h" |
| #include "ExceptionCode.h" |
| #include "HTMLElement.h" |
| #include "HTMLNames.h" |
| #include "ProcessingInstruction.h" |
| #include "RangeException.h" |
| #include "RenderBlock.h" |
| #include "Text.h" |
| #include "TextIterator.h" |
| #include "markup.h" |
| #include "visible_units.h" |
| |
| namespace WebCore { |
| |
| using namespace std; |
| using namespace HTMLNames; |
| |
| #ifndef NDEBUG |
| class RangeCounter { |
| public: |
| static unsigned count; |
| ~RangeCounter() |
| { |
| if (count) |
| fprintf(stderr, "LEAK: %u Range\n", count); |
| } |
| }; |
| unsigned RangeCounter::count = 0; |
| static RangeCounter rangeCounter; |
| #endif |
| |
| Range::Range(Document* ownerDocument) |
| : m_ownerDocument(ownerDocument) |
| , m_startContainer(ownerDocument) |
| , m_startOffset(0) |
| , m_endContainer(ownerDocument) |
| , m_endOffset(0) |
| , m_detached(false) |
| { |
| #ifndef NDEBUG |
| ++RangeCounter::count; |
| #endif |
| } |
| |
| Range::Range(Document* ownerDocument, |
| Node* startContainer, int startOffset, |
| Node* endContainer, int endOffset) |
| : m_ownerDocument(ownerDocument) |
| , m_startContainer(ownerDocument) |
| , m_startOffset(0) |
| , m_endContainer(ownerDocument) |
| , m_endOffset(0) |
| , m_detached(false) |
| { |
| #ifndef NDEBUG |
| ++RangeCounter::count; |
| #endif |
| // Simply setting the containers and offsets directly would not do any of the checking |
| // that setStart and setEnd do, so we must call those functions. |
| ExceptionCode ec = 0; |
| setStart(startContainer, startOffset, ec); |
| ASSERT(ec == 0); |
| setEnd(endContainer, endOffset, ec); |
| ASSERT(ec == 0); |
| } |
| |
| Range::Range(Document* ownerDocument, const Position& start, const Position& end) |
| : m_ownerDocument(ownerDocument) |
| , m_startContainer(ownerDocument) |
| , m_startOffset(0) |
| , m_endContainer(ownerDocument) |
| , m_endOffset(0) |
| , m_detached(false) |
| { |
| #ifndef NDEBUG |
| ++RangeCounter::count; |
| #endif |
| // Simply setting the containers and offsets directly would not do any of the checking |
| // that setStart and setEnd do, so we must call those functions. |
| ExceptionCode ec = 0; |
| setStart(start.node(), start.offset(), ec); |
| ASSERT(ec == 0); |
| setEnd(end.node(), end.offset(), ec); |
| ASSERT(ec == 0); |
| } |
| |
| Range::~Range() |
| { |
| #ifndef NDEBUG |
| --RangeCounter::count; |
| #endif |
| } |
| |
| Node *Range::startContainer(ExceptionCode& ec) const |
| { |
| if (m_detached) { |
| ec = INVALID_STATE_ERR; |
| return 0; |
| } |
| |
| return m_startContainer.get(); |
| } |
| |
| int Range::startOffset(ExceptionCode& ec) const |
| { |
| if (m_detached) { |
| ec = INVALID_STATE_ERR; |
| return 0; |
| } |
| |
| return m_startOffset; |
| } |
| |
| Node *Range::endContainer(ExceptionCode& ec) const |
| { |
| if (m_detached) { |
| ec = INVALID_STATE_ERR; |
| return 0; |
| } |
| |
| return m_endContainer.get(); |
| } |
| |
| int Range::endOffset(ExceptionCode& ec) const |
| { |
| if (m_detached) { |
| ec = INVALID_STATE_ERR; |
| return 0; |
| } |
| |
| return m_endOffset; |
| } |
| |
| Node *Range::commonAncestorContainer(ExceptionCode& ec) const |
| { |
| if (m_detached) { |
| ec = INVALID_STATE_ERR; |
| return 0; |
| } |
| |
| Node *com = commonAncestorContainer(m_startContainer.get(), m_endContainer.get()); |
| if (!com) // should never happen |
| ec = WRONG_DOCUMENT_ERR; |
| return com; |
| } |
| |
| Node *Range::commonAncestorContainer(Node *containerA, Node *containerB) |
| { |
| Node *parentStart; |
| |
| for (parentStart = containerA; parentStart; parentStart = parentStart->parentNode()) { |
| Node *parentEnd = containerB; |
| while (parentEnd && (parentStart != parentEnd)) |
| parentEnd = parentEnd->parentNode(); |
| if (parentStart == parentEnd) |
| break; |
| } |
| |
| return parentStart; |
| } |
| |
| bool Range::collapsed(ExceptionCode& ec) const |
| { |
| if (m_detached) { |
| ec = INVALID_STATE_ERR; |
| return 0; |
| } |
| |
| return (m_startContainer == m_endContainer && m_startOffset == m_endOffset); |
| } |
| |
| void Range::setStart( Node *refNode, int offset, ExceptionCode& ec) |
| { |
| if (m_detached) { |
| ec = INVALID_STATE_ERR; |
| return; |
| } |
| |
| if (!refNode) { |
| ec = NOT_FOUND_ERR; |
| return; |
| } |
| |
| if (refNode->document() != m_ownerDocument) { |
| ec = WRONG_DOCUMENT_ERR; |
| return; |
| } |
| |
| ec = 0; |
| checkNodeWOffset(refNode, offset, ec); |
| if (ec) |
| return; |
| |
| m_startContainer = refNode; |
| m_startOffset = offset; |
| |
| // check if different root container |
| Node* endRootContainer = m_endContainer.get(); |
| while (endRootContainer->parentNode()) |
| endRootContainer = endRootContainer->parentNode(); |
| Node* startRootContainer = m_startContainer.get(); |
| while (startRootContainer->parentNode()) |
| startRootContainer = startRootContainer->parentNode(); |
| if (startRootContainer != endRootContainer) |
| collapse(true, ec); |
| // check if new start after end |
| else if (compareBoundaryPoints(m_startContainer.get(), m_startOffset, m_endContainer.get(), m_endOffset) > 0) |
| collapse(true, ec); |
| } |
| |
| void Range::setEnd( Node *refNode, int offset, ExceptionCode& ec) |
| { |
| if (m_detached) { |
| ec = INVALID_STATE_ERR; |
| return; |
| } |
| |
| if (!refNode) { |
| ec = NOT_FOUND_ERR; |
| return; |
| } |
| |
| if (refNode->document() != m_ownerDocument) { |
| ec = WRONG_DOCUMENT_ERR; |
| return; |
| } |
| |
| ec = 0; |
| checkNodeWOffset(refNode, offset, ec); |
| if (ec) |
| return; |
| |
| m_endContainer = refNode; |
| m_endOffset = offset; |
| |
| // check if different root container |
| Node* endRootContainer = m_endContainer.get(); |
| while (endRootContainer->parentNode()) |
| endRootContainer = endRootContainer->parentNode(); |
| Node* startRootContainer = m_startContainer.get(); |
| while (startRootContainer->parentNode()) |
| startRootContainer = startRootContainer->parentNode(); |
| if (startRootContainer != endRootContainer) |
| collapse(false, ec); |
| // check if new end before start |
| if (compareBoundaryPoints(m_startContainer.get(), m_startOffset, m_endContainer.get(), m_endOffset) > 0) |
| collapse(false, ec); |
| } |
| |
| void Range::collapse( bool toStart, ExceptionCode& ec) |
| { |
| if (m_detached) { |
| ec = INVALID_STATE_ERR; |
| return; |
| } |
| |
| if (toStart) { // collapse to start |
| m_endContainer = m_startContainer; |
| m_endOffset = m_startOffset; |
| } else { // collapse to end |
| m_startContainer = m_endContainer; |
| m_startOffset = m_endOffset; |
| } |
| } |
| |
| bool Range::isPointInRange(Node* refNode, int offset, ExceptionCode& ec) |
| { |
| if (!refNode) { |
| ec = NOT_FOUND_ERR; |
| return false; |
| } |
| |
| if (m_detached && refNode->attached()) { |
| ec = INVALID_STATE_ERR; |
| return false; |
| } |
| |
| if (!m_detached && !refNode->attached()) { |
| // firefox doesn't throw an exception for this case; it returns false |
| return false; |
| } |
| |
| if (refNode->document() != m_ownerDocument) { |
| ec = WRONG_DOCUMENT_ERR; |
| return false; |
| } |
| |
| ec = 0; |
| checkNodeWOffset(refNode, offset, ec); |
| if (ec) |
| return false; |
| |
| // point is not before the start and not after the end |
| if ((compareBoundaryPoints(refNode, offset, m_startContainer.get(), m_startOffset) != -1) && |
| (compareBoundaryPoints(refNode, offset, m_endContainer.get(), m_endOffset) != 1)) |
| return true; |
| else |
| return false; |
| } |
| |
| short Range::comparePoint(Node* refNode, int offset, ExceptionCode& ec) |
| { |
| // http://developer.mozilla.org/en/docs/DOM:range.comparePoint |
| // This method returns -1, 0 or 1 depending on if the point described by the |
| // refNode node and an offset within the node is before, same as, or after the range respectively. |
| |
| if (!refNode) { |
| ec = NOT_FOUND_ERR; |
| return 0; |
| } |
| |
| if (m_detached && refNode->attached()) { |
| ec = INVALID_STATE_ERR; |
| return 0; |
| } |
| |
| if (!m_detached && !refNode->attached()) { |
| // firefox doesn't throw an exception for this case; it returns -1 |
| return -1; |
| } |
| |
| if (refNode->document() != m_ownerDocument) { |
| ec = WRONG_DOCUMENT_ERR; |
| return 0; |
| } |
| |
| ec = 0; |
| checkNodeWOffset(refNode, offset, ec); |
| if (ec) |
| return 0; |
| |
| // compare to start, and point comes before |
| if (compareBoundaryPoints(refNode, offset, m_startContainer.get(), m_startOffset) == -1) |
| return -1; |
| |
| // compare to end, and point comes after |
| else if (compareBoundaryPoints(refNode, offset, m_endContainer.get(), m_endOffset) == 1) |
| return 1; |
| |
| // point is in the middle of this range, or on the boundary points |
| else |
| return 0; |
| } |
| |
| Range::CompareResults Range::compareNode(Node* refNode, ExceptionCode& ec) |
| { |
| // http://developer.mozilla.org/en/docs/DOM:range.compareNode |
| // This method returns 0, 1, 2, or 3 based on if the node is before, after, |
| // before and after(surrounds), or inside the range, respectively |
| |
| if (!refNode) { |
| ec = NOT_FOUND_ERR; |
| return NODE_BEFORE; |
| } |
| |
| if (m_detached && refNode->attached()) { |
| ec = INVALID_STATE_ERR; |
| return NODE_BEFORE; |
| } |
| |
| if (!m_detached && !refNode->attached()) { |
| // firefox doesn't throw an exception for this case; it returns 0 |
| return NODE_BEFORE; |
| } |
| |
| if (refNode->document() != m_ownerDocument) { |
| // firefox doesn't throw an exception for this case; it returns 0 |
| return NODE_BEFORE; |
| } |
| |
| Node* parentNode = refNode->parentNode(); |
| unsigned nodeIndex = refNode->nodeIndex(); |
| |
| if (!parentNode) { |
| // if the node is the top document we should return NODE_BEFORE_AND_AFTER |
| // but we throw to match firefox behavior |
| ec = NOT_FOUND_ERR; |
| return NODE_BEFORE; |
| } |
| |
| if (comparePoint(parentNode, nodeIndex, ec) == -1) { // starts before |
| if (comparePoint(parentNode, nodeIndex + 1, ec) == 1) // ends after the range |
| return NODE_BEFORE_AND_AFTER; |
| return NODE_BEFORE; // ends before or in the range |
| } else { // starts at or after the range start |
| if (comparePoint(parentNode, nodeIndex + 1, ec) == 1) // ends after the range |
| return NODE_AFTER; |
| return NODE_INSIDE; // ends inside the range |
| } |
| } |
| |
| |
| short Range::compareBoundaryPoints(CompareHow how, const Range *sourceRange, ExceptionCode& ec) const |
| { |
| if (m_detached) { |
| ec = INVALID_STATE_ERR; |
| return 0; |
| } |
| |
| if (!sourceRange) { |
| ec = NOT_FOUND_ERR; |
| return 0; |
| } |
| |
| ec = 0; |
| Node *thisCont = commonAncestorContainer(ec); |
| if (ec) |
| return 0; |
| Node *sourceCont = sourceRange->commonAncestorContainer(ec); |
| if (ec) |
| return 0; |
| |
| if (thisCont->document() != sourceCont->document()) { |
| ec = WRONG_DOCUMENT_ERR; |
| return 0; |
| } |
| |
| Node *thisTop = thisCont; |
| Node *sourceTop = sourceCont; |
| while (thisTop->parentNode()) |
| thisTop = thisTop->parentNode(); |
| while (sourceTop->parentNode()) |
| sourceTop = sourceTop->parentNode(); |
| if (thisTop != sourceTop) { // in different DocumentFragments |
| ec = WRONG_DOCUMENT_ERR; |
| return 0; |
| } |
| |
| switch(how) |
| { |
| case START_TO_START: |
| return compareBoundaryPoints( m_startContainer.get(), m_startOffset, |
| sourceRange->startContainer(ec), sourceRange->startOffset(ec) ); |
| break; |
| case START_TO_END: |
| return compareBoundaryPoints( m_startContainer.get(), m_startOffset, |
| sourceRange->endContainer(ec), sourceRange->endOffset(ec) ); |
| break; |
| case END_TO_END: |
| return compareBoundaryPoints( m_endContainer.get(), m_endOffset, |
| sourceRange->endContainer(ec), sourceRange->endOffset(ec) ); |
| break; |
| case END_TO_START: |
| return compareBoundaryPoints( m_endContainer.get(), m_endOffset, |
| sourceRange->startContainer(ec), sourceRange->startOffset(ec) ); |
| break; |
| default: |
| ec = SYNTAX_ERR; |
| return 0; |
| } |
| } |
| |
| short Range::compareBoundaryPoints( Node *containerA, int offsetA, Node *containerB, int offsetB ) |
| { |
| ASSERT(containerA && containerB); |
| if (!containerA) |
| return -1; |
| if (!containerB) |
| return 1; |
| // see DOM2 traversal & range section 2.5 |
| |
| // case 1: both points have the same container |
| if(containerA == containerB) { |
| if (offsetA == offsetB) |
| return 0; // A is equal to B |
| if (offsetA < offsetB) |
| return -1; // A is before B |
| else |
| return 1; // A is after B |
| } |
| |
| // case 2: node C (container B or an ancestor) is a child node of A |
| Node *c = containerB; |
| while (c && c->parentNode() != containerA) |
| c = c->parentNode(); |
| if (c) { |
| int offsetC = 0; |
| Node *n = containerA->firstChild(); |
| while (n != c && offsetC < offsetA) { |
| offsetC++; |
| n = n->nextSibling(); |
| } |
| |
| if (offsetA <= offsetC) |
| return -1; // A is before B |
| else |
| return 1; // A is after B |
| } |
| |
| // case 3: node C (container A or an ancestor) is a child node of B |
| c = containerA; |
| while (c && c->parentNode() != containerB) |
| c = c->parentNode(); |
| if (c) { |
| int offsetC = 0; |
| Node *n = containerB->firstChild(); |
| while (n != c && offsetC < offsetB) { |
| offsetC++; |
| n = n->nextSibling(); |
| } |
| |
| if(offsetC < offsetB) |
| return -1; // A is before B |
| else |
| return 1; // A is after B |
| } |
| |
| // case 4: containers A & B are siblings, or children of siblings |
| // ### we need to do a traversal here instead |
| Node *cmnRoot = commonAncestorContainer(containerA,containerB); |
| if (!cmnRoot) |
| return 0; |
| Node *childA = containerA; |
| while (childA && childA->parentNode() != cmnRoot) |
| childA = childA->parentNode(); |
| if (!childA) |
| childA = cmnRoot; |
| Node *childB = containerB; |
| while (childB && childB->parentNode() != cmnRoot) |
| childB = childB->parentNode(); |
| if (!childB) |
| childB = cmnRoot; |
| |
| if (childA == childB) |
| return 0; // A is equal to B |
| |
| Node *n = cmnRoot->firstChild(); |
| while (n) { |
| if (n == childA) |
| return -1; // A is before B |
| if (n == childB) |
| return 1; // A is after B |
| n = n->nextSibling(); |
| } |
| |
| // Should never reach this point. |
| ASSERT(0); |
| return 0; |
| } |
| |
| short Range::compareBoundaryPoints( const Position &a, const Position &b ) |
| { |
| return compareBoundaryPoints(a.node(), a.offset(), b.node(), b.offset()); |
| } |
| |
| bool Range::boundaryPointsValid() const |
| { |
| return m_startContainer && m_endContainer && compareBoundaryPoints(m_startContainer.get(), m_startOffset, m_endContainer.get(), m_endOffset) <= 0; |
| } |
| |
| void Range::deleteContents(ExceptionCode& ec) { |
| if (m_detached) { |
| ec = INVALID_STATE_ERR; |
| return; |
| } |
| |
| ec = 0; |
| checkDeleteExtract(ec); |
| if (ec) |
| return; |
| |
| processContents(DELETE_CONTENTS,ec); |
| } |
| |
| bool Range::intersectsNode(Node* refNode, ExceptionCode& ec) |
| { |
| // http://developer.mozilla.org/en/docs/DOM:range.intersectsNode |
| // Returns a bool if the node intersects the range. |
| |
| if (!refNode) { |
| ec = NOT_FOUND_ERR; |
| return false; |
| } |
| |
| if (m_detached && refNode->attached() || |
| !m_detached && !refNode->attached() || |
| refNode->document() != m_ownerDocument) |
| // firefox doesn't throw an exception for these case; it returns false |
| return false; |
| |
| Node* parentNode = refNode->parentNode(); |
| unsigned nodeIndex = refNode->nodeIndex(); |
| |
| if (!parentNode) { |
| // if the node is the top document we should return NODE_BEFORE_AND_AFTER |
| // but we throw to match firefox behavior |
| ec = NOT_FOUND_ERR; |
| return false; |
| } |
| |
| if (comparePoint(parentNode, nodeIndex, ec) == -1 && // starts before start |
| comparePoint(parentNode, nodeIndex + 1, ec) == -1) { // ends before start |
| return false; |
| } else if(comparePoint(parentNode, nodeIndex, ec) == 1 && // starts after end |
| comparePoint(parentNode, nodeIndex + 1, ec) == 1) { // ends after end |
| return false; |
| } |
| |
| return true; //all other cases |
| } |
| |
| PassRefPtr<DocumentFragment> Range::processContents ( ActionType action, ExceptionCode& ec) |
| { |
| // ### when mutation events are implemented, we will have to take into account |
| // situations where the tree is being transformed while we delete - ugh! |
| |
| // ### perhaps disable node deletion notification for this range while we do this? |
| |
| RefPtr<DocumentFragment> fragment; |
| if (action == EXTRACT_CONTENTS || action == CLONE_CONTENTS) |
| fragment = new DocumentFragment(m_ownerDocument.get()); |
| |
| ec = 0; |
| if (collapsed(ec)) |
| return fragment.release(); |
| if (ec) |
| return 0; |
| |
| Node *cmnRoot = commonAncestorContainer(ec); |
| if (ec) |
| return 0; |
| |
| // what is the highest node that partially selects the start of the range? |
| Node *partialStart = 0; |
| if (m_startContainer != cmnRoot) { |
| partialStart = m_startContainer.get(); |
| while (partialStart->parentNode() != cmnRoot) |
| partialStart = partialStart->parentNode(); |
| } |
| |
| // what is the highest node that partially selects the end of the range? |
| Node *partialEnd = 0; |
| if (m_endContainer != cmnRoot) { |
| partialEnd = m_endContainer.get(); |
| while (partialEnd->parentNode() != cmnRoot) |
| partialEnd = partialEnd->parentNode(); |
| } |
| |
| // Simple case: the start and end containers are the same. We just grab |
| // everything >= start offset and < end offset |
| if (m_startContainer == m_endContainer) { |
| if(m_startContainer->nodeType() == Node::TEXT_NODE || |
| m_startContainer->nodeType() == Node::CDATA_SECTION_NODE || |
| m_startContainer->nodeType() == Node::COMMENT_NODE) { |
| |
| if (action == EXTRACT_CONTENTS || action == CLONE_CONTENTS) { |
| RefPtr<CharacterData> c = static_pointer_cast<CharacterData>(m_startContainer->cloneNode(true)); |
| c->deleteData(m_endOffset, c->length() - m_endOffset, ec); |
| c->deleteData(0, m_startOffset, ec); |
| fragment->appendChild(c.release(), ec); |
| } |
| if (action == EXTRACT_CONTENTS || action == DELETE_CONTENTS) { |
| static_cast<CharacterData*>(m_startContainer.get())->deleteData(m_startOffset,m_endOffset-m_startOffset,ec); |
| m_startContainer->document()->updateLayout(); |
| } |
| } |
| else if (m_startContainer->nodeType() == Node::PROCESSING_INSTRUCTION_NODE) { |
| if (action == EXTRACT_CONTENTS || action == CLONE_CONTENTS) { |
| RefPtr<ProcessingInstruction> c = static_pointer_cast<ProcessingInstruction>(m_startContainer->cloneNode(true)); |
| c->setData(c->data().substring(m_startOffset, m_endOffset - m_startOffset), ec); |
| fragment->appendChild(c.release(), ec); |
| } |
| if (action == EXTRACT_CONTENTS || action == DELETE_CONTENTS) { |
| ProcessingInstruction* pi= static_cast<ProcessingInstruction*>(m_startContainer.get()); |
| String data(pi->data()); |
| data.remove(m_startOffset, m_endOffset - m_startOffset); |
| pi->setData(data, ec); |
| } |
| } |
| else { |
| Node *n = m_startContainer->firstChild(); |
| unsigned i; |
| for (i = 0; n && i < m_startOffset; i++) // skip until m_startOffset |
| n = n->nextSibling(); |
| while (n && i < m_endOffset) { // delete until m_endOffset |
| Node *next = n->nextSibling(); |
| if (action == EXTRACT_CONTENTS) |
| fragment->appendChild(n,ec); // will remove n from it's parent |
| else if (action == CLONE_CONTENTS) |
| fragment->appendChild(n->cloneNode(true),ec); |
| else |
| m_startContainer->removeChild(n,ec); |
| n = next; |
| i++; |
| } |
| } |
| if (action == EXTRACT_CONTENTS || action == DELETE_CONTENTS) |
| collapse(true,ec); |
| return fragment.release(); |
| } |
| |
| // Complex case: Start and end containers are different. |
| // There are three possiblities here: |
| // 1. Start container == cmnRoot (End container must be a descendant) |
| // 2. End container == cmnRoot (Start container must be a descendant) |
| // 3. Neither is cmnRoot, they are both descendants |
| // |
| // In case 3, we grab everything after the start (up until a direct child |
| // of cmnRoot) into leftContents, and everything before the end (up until |
| // a direct child of cmnRoot) into rightContents. Then we process all |
| // cmnRoot children between leftContents and rightContents |
| // |
| // In case 1 or 2, we skip either processing of leftContents or rightContents, |
| // in which case the last lot of nodes either goes from the first or last |
| // child of cmnRoot. |
| // |
| // These are deleted, cloned, or extracted (i.e. both) depending on action. |
| |
| RefPtr<Node> leftContents; |
| if (m_startContainer != cmnRoot) { |
| // process the left-hand side of the range, up until the last ancestor of |
| // m_startContainer before cmnRoot |
| if(m_startContainer->nodeType() == Node::TEXT_NODE || |
| m_startContainer->nodeType() == Node::CDATA_SECTION_NODE || |
| m_startContainer->nodeType() == Node::COMMENT_NODE) { |
| |
| if (action == EXTRACT_CONTENTS || action == CLONE_CONTENTS) { |
| RefPtr<CharacterData> c = static_pointer_cast<CharacterData>(m_startContainer->cloneNode(true)); |
| c->deleteData(0, m_startOffset, ec); |
| leftContents = c.release(); |
| } |
| if (action == EXTRACT_CONTENTS || action == DELETE_CONTENTS) { |
| static_cast<CharacterData*>(m_startContainer.get())->deleteData( |
| m_startOffset, static_cast<CharacterData*>(m_startContainer.get())->length() - m_startOffset, ec); |
| m_startContainer->document()->updateLayout(); |
| } |
| } |
| else if (m_startContainer->nodeType() == Node::PROCESSING_INSTRUCTION_NODE) { |
| if (action == EXTRACT_CONTENTS || action == CLONE_CONTENTS) { |
| RefPtr<ProcessingInstruction> c = static_pointer_cast<ProcessingInstruction>(m_startContainer->cloneNode(true)); |
| c->setData(c->data().substring(m_startOffset), ec); |
| leftContents = c.release(); |
| } |
| if (action == EXTRACT_CONTENTS || action == DELETE_CONTENTS) { |
| ProcessingInstruction* pi= static_cast<ProcessingInstruction*>(m_startContainer.get()); |
| String data(pi->data()); |
| pi->setData(data.left(m_startOffset), ec); |
| } |
| } |
| else { |
| if (action == EXTRACT_CONTENTS || action == CLONE_CONTENTS) |
| leftContents = m_startContainer->cloneNode(false); |
| Node *n = m_startContainer->firstChild(); |
| for (unsigned i = 0; n && i < m_startOffset; i++) // skip until m_startOffset |
| n = n->nextSibling(); |
| while (n) { // process until end |
| Node *next = n->nextSibling(); |
| if (action == EXTRACT_CONTENTS) |
| leftContents->appendChild(n,ec); // will remove n from m_startContainer |
| else if (action == CLONE_CONTENTS) |
| leftContents->appendChild(n->cloneNode(true),ec); |
| else |
| m_startContainer->removeChild(n,ec); |
| n = next; |
| } |
| } |
| |
| Node *leftParent = m_startContainer->parentNode(); |
| Node *n = m_startContainer->nextSibling(); |
| for (; leftParent != cmnRoot; leftParent = leftParent->parentNode()) { |
| if (action == EXTRACT_CONTENTS || action == CLONE_CONTENTS) { |
| RefPtr<Node> leftContentsParent = leftParent->cloneNode(false); |
| leftContentsParent->appendChild(leftContents,ec); |
| leftContents = leftContentsParent; |
| } |
| |
| Node *next; |
| for (; n; n = next) { |
| next = n->nextSibling(); |
| if (action == EXTRACT_CONTENTS) |
| leftContents->appendChild(n,ec); // will remove n from leftParent |
| else if (action == CLONE_CONTENTS) |
| leftContents->appendChild(n->cloneNode(true),ec); |
| else |
| leftParent->removeChild(n,ec); |
| } |
| n = leftParent->nextSibling(); |
| } |
| } |
| |
| RefPtr<Node> rightContents = 0; |
| if (m_endContainer != cmnRoot) { |
| // delete the right-hand side of the range, up until the last ancestor of |
| // m_endContainer before cmnRoot |
| if(m_endContainer->nodeType() == Node::TEXT_NODE || |
| m_endContainer->nodeType() == Node::CDATA_SECTION_NODE || |
| m_endContainer->nodeType() == Node::COMMENT_NODE) { |
| |
| if (action == EXTRACT_CONTENTS || action == CLONE_CONTENTS) { |
| RefPtr<CharacterData> c = static_pointer_cast<CharacterData>(m_endContainer->cloneNode(true)); |
| c->deleteData(m_endOffset, static_cast<CharacterData*>(m_endContainer.get())->length() - m_endOffset, ec); |
| rightContents = c; |
| } |
| if (action == EXTRACT_CONTENTS || action == DELETE_CONTENTS) { |
| static_cast<CharacterData*>(m_endContainer.get())->deleteData(0, m_endOffset, ec); |
| m_startContainer->document()->updateLayout(); |
| } |
| } |
| else if (m_endContainer->nodeType() == Node::PROCESSING_INSTRUCTION_NODE) { |
| if (action == EXTRACT_CONTENTS || action == CLONE_CONTENTS) { |
| RefPtr<ProcessingInstruction> c = static_pointer_cast<ProcessingInstruction>(m_endContainer->cloneNode(true)); |
| c->setData(c->data().left(m_endOffset), ec); |
| rightContents = c.release(); |
| } |
| if (action == EXTRACT_CONTENTS || action == DELETE_CONTENTS) { |
| ProcessingInstruction* pi= static_cast<ProcessingInstruction*>(m_endContainer.get()); |
| pi->setData(pi->data().substring(m_endOffset), ec); |
| } |
| } |
| else { |
| if (action == EXTRACT_CONTENTS || action == CLONE_CONTENTS) |
| rightContents = m_endContainer->cloneNode(false); |
| Node *n = m_endContainer->firstChild(); |
| if (n && m_endOffset) { |
| for (unsigned i = 0; i+1 < m_endOffset; i++) { // skip to m_endOffset |
| Node *next = n->nextSibling(); |
| if (!next) |
| break; |
| n = next; |
| } |
| Node *prev; |
| for (; n; n = prev) { |
| prev = n->previousSibling(); |
| if (action == EXTRACT_CONTENTS) |
| rightContents->insertBefore(n,rightContents->firstChild(),ec); // will remove n from it's parent |
| else if (action == CLONE_CONTENTS) |
| rightContents->insertBefore(n->cloneNode(true),rightContents->firstChild(),ec); |
| else |
| m_endContainer->removeChild(n,ec); |
| } |
| } |
| } |
| |
| Node *rightParent = m_endContainer->parentNode(); |
| Node *n = m_endContainer->previousSibling(); |
| for (; rightParent != cmnRoot; rightParent = rightParent->parentNode()) { |
| if (action == EXTRACT_CONTENTS || action == CLONE_CONTENTS) { |
| RefPtr<Node> rightContentsParent = rightParent->cloneNode(false); |
| rightContentsParent->appendChild(rightContents,ec); |
| rightContents = rightContentsParent; |
| } |
| |
| Node *prev; |
| for (; n; n = prev) { |
| prev = n->previousSibling(); |
| if (action == EXTRACT_CONTENTS) |
| rightContents->insertBefore(n,rightContents->firstChild(),ec); // will remove n from it's parent |
| else if (action == CLONE_CONTENTS) |
| rightContents->insertBefore(n->cloneNode(true),rightContents->firstChild(),ec); |
| else |
| rightParent->removeChild(n,ec); |
| } |
| n = rightParent->previousSibling(); |
| } |
| } |
| |
| // delete all children of cmnRoot between the start and end container |
| |
| Node *processStart; // child of cmnRooot |
| if (m_startContainer == cmnRoot) { |
| unsigned i; |
| processStart = m_startContainer->firstChild(); |
| for (i = 0; i < m_startOffset; i++) |
| processStart = processStart->nextSibling(); |
| } |
| else { |
| processStart = m_startContainer.get(); |
| while (processStart->parentNode() != cmnRoot) |
| processStart = processStart->parentNode(); |
| processStart = processStart->nextSibling(); |
| } |
| Node *processEnd; // child of cmnRooot |
| if (m_endContainer == cmnRoot) { |
| unsigned i; |
| processEnd = m_endContainer->firstChild(); |
| for (i = 0; i < m_endOffset; i++) |
| processEnd = processEnd->nextSibling(); |
| } |
| else { |
| processEnd = m_endContainer.get(); |
| while (processEnd->parentNode() != cmnRoot) |
| processEnd = processEnd->parentNode(); |
| } |
| |
| // Now add leftContents, stuff in between, and rightContents to the fragment |
| // (or just delete the stuff in between) |
| |
| if ((action == EXTRACT_CONTENTS || action == CLONE_CONTENTS) && leftContents) |
| fragment->appendChild(leftContents,ec); |
| |
| Node *next; |
| Node *n; |
| if (processStart) { |
| for (n = processStart; n && n != processEnd; n = next) { |
| next = n->nextSibling(); |
| |
| if (action == EXTRACT_CONTENTS) |
| fragment->appendChild(n,ec); // will remove from cmnRoot |
| else if (action == CLONE_CONTENTS) |
| fragment->appendChild(n->cloneNode(true),ec); |
| else |
| cmnRoot->removeChild(n,ec); |
| } |
| } |
| |
| if ((action == EXTRACT_CONTENTS || action == CLONE_CONTENTS) && rightContents) |
| fragment->appendChild(rightContents,ec); |
| |
| // collapse to the proper position - see spec section 2.6 |
| if (action == EXTRACT_CONTENTS || action == DELETE_CONTENTS) { |
| if (!partialStart && !partialEnd) |
| collapse(true,ec); |
| else if (partialStart) { |
| m_startContainer = partialStart->parentNode(); |
| m_endContainer = partialStart->parentNode(); |
| m_startOffset = m_endOffset = partialStart->nodeIndex()+1; |
| } |
| else if (partialEnd) { |
| m_startContainer = partialEnd->parentNode(); |
| m_endContainer = partialEnd->parentNode(); |
| m_startOffset = m_endOffset = partialEnd->nodeIndex(); |
| } |
| } |
| return fragment.release(); |
| } |
| |
| |
| PassRefPtr<DocumentFragment> Range::extractContents(ExceptionCode& ec) |
| { |
| if (m_detached) { |
| ec = INVALID_STATE_ERR; |
| return 0; |
| } |
| |
| ec = 0; |
| checkDeleteExtract(ec); |
| if (ec) |
| return 0; |
| |
| return processContents(EXTRACT_CONTENTS,ec); |
| } |
| |
| PassRefPtr<DocumentFragment> Range::cloneContents( int &ec ) |
| { |
| if (m_detached) { |
| ec = INVALID_STATE_ERR; |
| return 0; |
| } |
| |
| return processContents(CLONE_CONTENTS,ec); |
| } |
| |
| void Range::insertNode(PassRefPtr<Node> newNode, ExceptionCode& ec) |
| { |
| ec = 0; |
| |
| if (m_detached) { |
| ec = INVALID_STATE_ERR; |
| return; |
| } |
| |
| if (!newNode) { |
| ec = NOT_FOUND_ERR; |
| return; |
| } |
| |
| // NO_MODIFICATION_ALLOWED_ERR: Raised if an ancestor container of either boundary-point of |
| // the Range is read-only. |
| if (containedByReadOnly()) { |
| ec = NO_MODIFICATION_ALLOWED_ERR; |
| return; |
| } |
| |
| // WRONG_DOCUMENT_ERR: Raised if newParent and the container of the start of the Range were |
| // not created from the same document. |
| if (newNode->document() != m_startContainer->document()) { |
| ec = WRONG_DOCUMENT_ERR; |
| return; |
| } |
| |
| |
| // HIERARCHY_REQUEST_ERR: Raised if the container of the start of the Range is of a type that |
| // does not allow children of the type of newNode or if newNode is an ancestor of the container. |
| |
| // an extra one here - if a text node is going to split, it must have a parent to insert into |
| if (m_startContainer->nodeType() == Node::TEXT_NODE && !m_startContainer->parentNode()) { |
| ec = HIERARCHY_REQUEST_ERR; |
| return; |
| } |
| |
| // In the case where the container is a text node, we check against the container's parent, because |
| // text nodes get split up upon insertion. |
| Node *checkAgainst; |
| if (m_startContainer->nodeType() == Node::TEXT_NODE) |
| checkAgainst = m_startContainer->parentNode(); |
| else |
| checkAgainst = m_startContainer.get(); |
| |
| if (newNode->nodeType() == Node::DOCUMENT_FRAGMENT_NODE) { |
| // check each child node, not the DocumentFragment itself |
| Node *c; |
| for (c = newNode->firstChild(); c; c = c->nextSibling()) { |
| if (!checkAgainst->childTypeAllowed(c->nodeType())) { |
| ec = HIERARCHY_REQUEST_ERR; |
| return; |
| } |
| } |
| } else { |
| if (!checkAgainst->childTypeAllowed(newNode->nodeType())) { |
| ec = HIERARCHY_REQUEST_ERR; |
| return; |
| } |
| } |
| |
| for (Node *n = m_startContainer.get(); n; n = n->parentNode()) { |
| if (n == newNode) { |
| ec = HIERARCHY_REQUEST_ERR; |
| return; |
| } |
| } |
| |
| // INVALID_NODE_TYPE_ERR: Raised if newNode is an Attr, Entity, Notation, or Document node. |
| if (newNode->nodeType() == Node::ATTRIBUTE_NODE || |
| newNode->nodeType() == Node::ENTITY_NODE || |
| newNode->nodeType() == Node::NOTATION_NODE || |
| newNode->nodeType() == Node::DOCUMENT_NODE) { |
| ec = RangeException::INVALID_NODE_TYPE_ERR; |
| return; |
| } |
| |
| unsigned endOffsetDelta = 0; |
| if (m_startContainer->nodeType() == Node::TEXT_NODE || |
| m_startContainer->nodeType() == Node::CDATA_SECTION_NODE) { |
| RefPtr<Text> newText = static_cast<Text*>(m_startContainer.get())->splitText(m_startOffset, ec); |
| if (ec) |
| return; |
| |
| if (m_startContainer == m_endContainer) |
| endOffsetDelta = -m_startOffset; |
| |
| m_startContainer->parentNode()->insertBefore(newNode, newText.get(), ec); |
| if (ec) |
| return; |
| m_endContainer = newText; |
| } else { |
| if (m_startContainer == m_endContainer) { |
| bool isFragment = newNode->nodeType() == Node::DOCUMENT_FRAGMENT_NODE; |
| endOffsetDelta = isFragment ? newNode->childNodeCount() : 1; |
| } |
| |
| m_startContainer->insertBefore(newNode, m_startContainer->childNode(m_startOffset), ec); |
| if (ec) |
| return; |
| } |
| m_endOffset += endOffsetDelta; |
| } |
| |
| String Range::toString(ExceptionCode& ec) const |
| { |
| if (m_detached) { |
| ec = INVALID_STATE_ERR; |
| return String(); |
| } |
| |
| Vector<UChar> result; |
| |
| Node* pastEnd = pastEndNode(); |
| for (Node* n = startNode(); n != pastEnd; n = n->traverseNextNode()) { |
| if (n->nodeType() == Node::TEXT_NODE || n->nodeType() == Node::CDATA_SECTION_NODE) { |
| String data = static_cast<CharacterData*>(n)->data(); |
| unsigned length = data.length(); |
| unsigned start = (n == m_startContainer) ? min(m_startOffset, length) : 0; |
| unsigned end = (n == m_endContainer) ? min(max(start, m_endOffset), length) : length; |
| result.append(data.characters() + start, end - start); |
| } |
| } |
| |
| return String::adopt(result); |
| } |
| |
| String Range::toHTML() const |
| { |
| return createMarkup(this); |
| } |
| |
| String Range::text() const |
| { |
| if (m_detached) |
| return String(); |
| |
| // We need to update layout, since plainText uses line boxes in the render tree. |
| // FIXME: As with innerText, we'd like this to work even if there are no render objects. |
| m_startContainer->document()->updateLayout(); |
| |
| // FIXME: Maybe DOMRange constructor should take const DOMRange*; if it did we would not need this const_cast. |
| return plainText(const_cast<Range *>(this)); |
| } |
| |
| PassRefPtr<DocumentFragment> Range::createContextualFragment(const String &html, ExceptionCode& ec) const |
| { |
| if (m_detached) { |
| ec = INVALID_STATE_ERR; |
| return 0; |
| } |
| |
| Node* htmlElement = m_startContainer->isHTMLElement() ? m_startContainer.get() : m_startContainer->parentNode(); |
| if (!htmlElement || !htmlElement->isHTMLElement()) { |
| ec = NOT_SUPPORTED_ERR; |
| return 0; |
| } |
| |
| RefPtr<DocumentFragment> fragment = static_cast<HTMLElement*>(htmlElement)->createContextualFragment(html); |
| if (!fragment) { |
| ec = NOT_SUPPORTED_ERR; |
| return 0; |
| } |
| |
| return fragment.release(); |
| } |
| |
| |
| void Range::detach(ExceptionCode& ec) |
| { |
| if (m_detached) { |
| ec = INVALID_STATE_ERR; |
| return; |
| } |
| |
| m_startContainer = 0; |
| m_endContainer = 0; |
| m_detached = true; |
| } |
| |
| bool Range::isDetached() const |
| { |
| return m_detached; |
| } |
| |
| void Range::checkNodeWOffset(Node* n, int offset, ExceptionCode& ec) const |
| { |
| if (offset < 0) |
| ec = INDEX_SIZE_ERR; |
| // no return here |
| |
| switch (n->nodeType()) { |
| case Node::ENTITY_NODE: |
| case Node::NOTATION_NODE: |
| case Node::DOCUMENT_TYPE_NODE: |
| ec = RangeException::INVALID_NODE_TYPE_ERR; |
| break; |
| case Node::TEXT_NODE: |
| case Node::COMMENT_NODE: |
| case Node::CDATA_SECTION_NODE: |
| if ((unsigned)offset > static_cast<CharacterData*>(n)->length()) |
| ec = INDEX_SIZE_ERR; |
| break; |
| case Node::PROCESSING_INSTRUCTION_NODE: |
| if ((unsigned)offset > static_cast<ProcessingInstruction*>(n)->data().length()) |
| ec = INDEX_SIZE_ERR; |
| break; |
| default: |
| if ((unsigned)offset > n->childNodeCount()) |
| ec = INDEX_SIZE_ERR; |
| break; |
| } |
| } |
| |
| void Range::checkNodeBA( Node *n, ExceptionCode& ec) const |
| { |
| // INVALID_NODE_TYPE_ERR: Raised if the root container of refNode is not an |
| // Attr, Document or DocumentFragment node or part of a shadow DOM tree |
| // or if refNode is a Document, DocumentFragment, Attr, Entity, or Notation node. |
| Node *root = n; |
| while (root->parentNode()) |
| root = root->parentNode(); |
| if (!(root->nodeType() == Node::ATTRIBUTE_NODE || |
| root->nodeType() == Node::DOCUMENT_NODE || |
| root->nodeType() == Node::DOCUMENT_FRAGMENT_NODE || |
| root->isShadowNode())) { |
| ec = RangeException::INVALID_NODE_TYPE_ERR; |
| return; |
| } |
| |
| if( n->nodeType() == Node::DOCUMENT_NODE || |
| n->nodeType() == Node::DOCUMENT_FRAGMENT_NODE || |
| n->nodeType() == Node::ATTRIBUTE_NODE || |
| n->nodeType() == Node::ENTITY_NODE || |
| n->nodeType() == Node::NOTATION_NODE ) |
| ec = RangeException::INVALID_NODE_TYPE_ERR; |
| |
| } |
| |
| PassRefPtr<Range> Range::cloneRange(ExceptionCode& ec) const |
| { |
| if (m_detached) { |
| ec = INVALID_STATE_ERR; |
| return 0; |
| } |
| |
| return new Range(m_ownerDocument.get(), m_startContainer.get(), m_startOffset, m_endContainer.get(), m_endOffset); |
| } |
| |
| void Range::setStartAfter( Node *refNode, ExceptionCode& ec) |
| { |
| if (m_detached) { |
| ec = INVALID_STATE_ERR; |
| return; |
| } |
| |
| if (!refNode) { |
| ec = NOT_FOUND_ERR; |
| return; |
| } |
| |
| if (refNode->document() != m_ownerDocument) { |
| ec = WRONG_DOCUMENT_ERR; |
| return; |
| } |
| |
| ec = 0; |
| checkNodeBA( refNode, ec ); |
| if (ec) |
| return; |
| |
| setStart(refNode->parentNode(), refNode->nodeIndex() + 1, ec); |
| } |
| |
| void Range::setEndBefore( Node *refNode, ExceptionCode& ec) |
| { |
| if (m_detached) { |
| ec = INVALID_STATE_ERR; |
| return; |
| } |
| |
| if (!refNode) { |
| ec = NOT_FOUND_ERR; |
| return; |
| } |
| |
| if (refNode->document() != m_ownerDocument) { |
| ec = WRONG_DOCUMENT_ERR; |
| return; |
| } |
| |
| ec = 0; |
| checkNodeBA(refNode, ec); |
| if (ec) |
| return; |
| |
| setEnd(refNode->parentNode(), refNode->nodeIndex(), ec); |
| } |
| |
| void Range::setEndAfter( Node *refNode, ExceptionCode& ec) |
| { |
| if (m_detached) { |
| ec = INVALID_STATE_ERR; |
| return; |
| } |
| |
| if (!refNode) { |
| ec = NOT_FOUND_ERR; |
| return; |
| } |
| |
| if (refNode->document() != m_ownerDocument) { |
| ec = WRONG_DOCUMENT_ERR; |
| return; |
| } |
| |
| ec = 0; |
| checkNodeBA(refNode, ec); |
| if (ec) |
| return; |
| |
| setEnd(refNode->parentNode(), refNode->nodeIndex() + 1, ec); |
| |
| } |
| |
| void Range::selectNode( Node *refNode, ExceptionCode& ec) |
| { |
| if (m_detached) { |
| ec = INVALID_STATE_ERR; |
| return; |
| } |
| |
| if (!refNode) { |
| ec = NOT_FOUND_ERR; |
| return; |
| } |
| |
| // INVALID_NODE_TYPE_ERR: Raised if an ancestor of refNode is an Entity, Notation or |
| // DocumentType node or if refNode is a Document, DocumentFragment, Attr, Entity, or Notation |
| // node. |
| Node *anc; |
| for (anc = refNode->parentNode(); anc; anc = anc->parentNode()) { |
| if (anc->nodeType() == Node::ENTITY_NODE || |
| anc->nodeType() == Node::NOTATION_NODE || |
| anc->nodeType() == Node::DOCUMENT_TYPE_NODE) { |
| |
| ec = RangeException::INVALID_NODE_TYPE_ERR; |
| return; |
| } |
| } |
| |
| if (refNode->nodeType() == Node::DOCUMENT_NODE || |
| refNode->nodeType() == Node::DOCUMENT_FRAGMENT_NODE || |
| refNode->nodeType() == Node::ATTRIBUTE_NODE || |
| refNode->nodeType() == Node::ENTITY_NODE || |
| refNode->nodeType() == Node::NOTATION_NODE) { |
| |
| ec = RangeException::INVALID_NODE_TYPE_ERR; |
| return; |
| } |
| |
| ec = 0; |
| setStartBefore( refNode, ec ); |
| if (ec) |
| return; |
| setEndAfter( refNode, ec ); |
| } |
| |
| void Range::selectNodeContents( Node *refNode, ExceptionCode& ec) |
| { |
| if (m_detached) { |
| ec = INVALID_STATE_ERR; |
| return; |
| } |
| |
| if (!refNode) { |
| ec = NOT_FOUND_ERR; |
| return; |
| } |
| |
| // INVALID_NODE_TYPE_ERR: Raised if refNode or an ancestor of refNode is an Entity, Notation |
| // or DocumentType node. |
| Node *n; |
| for (n = refNode; n; n = n->parentNode()) { |
| if (n->nodeType() == Node::ENTITY_NODE || |
| n->nodeType() == Node::NOTATION_NODE || |
| n->nodeType() == Node::DOCUMENT_TYPE_NODE) { |
| |
| ec = RangeException::INVALID_NODE_TYPE_ERR; |
| return; |
| } |
| } |
| |
| m_startContainer = refNode; |
| m_startOffset = 0; |
| m_endContainer = refNode; |
| m_endOffset = refNode->offsetInCharacters() ? refNode->maxCharacterOffset() : refNode->childNodeCount(); |
| } |
| |
| void Range::surroundContents(PassRefPtr<Node> passNewParent, ExceptionCode& ec) |
| { |
| RefPtr<Node> newParent = passNewParent; |
| |
| if (m_detached) { |
| ec = INVALID_STATE_ERR; |
| return; |
| } |
| |
| if (!newParent) { |
| ec = NOT_FOUND_ERR; |
| return; |
| } |
| |
| // INVALID_NODE_TYPE_ERR: Raised if node is an Attr, Entity, DocumentType, Notation, |
| // Document, or DocumentFragment node. |
| if( newParent->nodeType() == Node::ATTRIBUTE_NODE || |
| newParent->nodeType() == Node::ENTITY_NODE || |
| newParent->nodeType() == Node::NOTATION_NODE || |
| newParent->nodeType() == Node::DOCUMENT_TYPE_NODE || |
| newParent->nodeType() == Node::DOCUMENT_NODE || |
| newParent->nodeType() == Node::DOCUMENT_FRAGMENT_NODE) { |
| ec = RangeException::INVALID_NODE_TYPE_ERR; |
| return; |
| } |
| |
| // NO_MODIFICATION_ALLOWED_ERR: Raised if an ancestor container of either boundary-point of |
| // the Range is read-only. |
| if (containedByReadOnly()) { |
| ec = NO_MODIFICATION_ALLOWED_ERR; |
| return; |
| } |
| |
| // WRONG_DOCUMENT_ERR: Raised if newParent and the container of the start of the Range were |
| // not created from the same document. |
| if (newParent->document() != m_startContainer->document()) { |
| ec = WRONG_DOCUMENT_ERR; |
| return; |
| } |
| |
| // Raise a HIERARCHY_REQUEST_ERR if m_startContainer doesn't accept children like newParent. |
| Node* parentOfNewParent = m_startContainer.get(); |
| // If m_startContainer is a textNode, it will be split and it will be its parent that will |
| // need to accept newParent. |
| if (parentOfNewParent->isTextNode()) |
| parentOfNewParent = parentOfNewParent->parentNode(); |
| if (!parentOfNewParent->childTypeAllowed(newParent->nodeType())) { |
| ec = HIERARCHY_REQUEST_ERR; |
| return; |
| } |
| |
| if (m_startContainer == newParent || m_startContainer->isDescendantOf(newParent.get())) { |
| ec = HIERARCHY_REQUEST_ERR; |
| return; |
| } |
| |
| // ### check if node would end up with a child node of a type not allowed by the type of node |
| |
| // BAD_BOUNDARYPOINTS_ERR: Raised if the Range partially selects a non-text node. |
| if (!m_startContainer->offsetInCharacters()) { |
| if (m_startOffset > 0 && m_startOffset < m_startContainer->childNodeCount()) { |
| ec = RangeException::BAD_BOUNDARYPOINTS_ERR; |
| return; |
| } |
| } |
| if (!m_endContainer->offsetInCharacters()) { |
| if (m_endOffset > 0 && m_endOffset < m_endContainer->childNodeCount()) { |
| ec = RangeException::BAD_BOUNDARYPOINTS_ERR; |
| return; |
| } |
| } |
| |
| ec = 0; |
| while (Node* n = newParent->firstChild()) { |
| newParent->removeChild(n, ec); |
| if (ec) |
| return; |
| } |
| RefPtr<DocumentFragment> fragment = extractContents(ec); |
| if (ec) |
| return; |
| insertNode(newParent, ec); |
| if (ec) |
| return; |
| newParent->appendChild(fragment.release(), ec); |
| if (ec) |
| return; |
| selectNode(newParent.get(), ec); |
| } |
| |
| void Range::setStartBefore( Node *refNode, ExceptionCode& ec) |
| { |
| if (m_detached) { |
| ec = INVALID_STATE_ERR; |
| return; |
| } |
| |
| if (!refNode) { |
| ec = NOT_FOUND_ERR; |
| return; |
| } |
| |
| if (refNode->document() != m_ownerDocument) { |
| ec = WRONG_DOCUMENT_ERR; |
| return; |
| } |
| |
| ec = 0; |
| checkNodeBA(refNode, ec); |
| if (ec) |
| return; |
| |
| setStart(refNode->parentNode(), refNode->nodeIndex(), ec); |
| } |
| |
| void Range::checkDeleteExtract(ExceptionCode& ec) |
| { |
| if (!commonAncestorContainer(ec) || ec) |
| return; |
| |
| Node *pastEnd = pastEndNode(); |
| for (Node *n = startNode(); n != pastEnd; n = n->traverseNextNode()) { |
| if (n->isReadOnlyNode()) { |
| ec = NO_MODIFICATION_ALLOWED_ERR; |
| return; |
| } |
| if (n->nodeType() == Node::DOCUMENT_TYPE_NODE) { // ### is this for only directly under the DF, or anywhere? |
| ec = HIERARCHY_REQUEST_ERR; |
| return; |
| } |
| } |
| |
| if (containedByReadOnly()) { |
| ec = NO_MODIFICATION_ALLOWED_ERR; |
| return; |
| } |
| } |
| |
| bool Range::containedByReadOnly() const |
| { |
| Node *n; |
| for (n = m_startContainer.get(); n; n = n->parentNode()) { |
| if (n->isReadOnlyNode()) |
| return true; |
| } |
| for (n = m_endContainer.get(); n; n = n->parentNode()) { |
| if (n->isReadOnlyNode()) |
| return true; |
| } |
| return false; |
| } |
| |
| Position Range::startPosition() const |
| { |
| return Position(m_startContainer.get(), m_startOffset); |
| } |
| |
| Position Range::endPosition() const |
| { |
| return Position(m_endContainer.get(), m_endOffset); |
| } |
| |
| Node *Range::startNode() const |
| { |
| if (!m_startContainer) |
| return 0; |
| if (m_startContainer->offsetInCharacters()) |
| return m_startContainer.get(); |
| Node *child = m_startContainer->childNode(m_startOffset); |
| if (child) |
| return child; |
| if (m_startOffset == 0) |
| return m_startContainer.get(); |
| return m_startContainer->traverseNextSibling(); |
| } |
| |
| Position Range::editingStartPosition() const |
| { |
| // This function is used by range style computations to avoid bugs like: |
| // <rdar://problem/4017641> REGRESSION (Mail): you can only bold/unbold a selection starting from end of line once |
| // It is important to skip certain irrelevant content at the start of the selection, so we do not wind up |
| // with a spurious "mixed" style. |
| |
| VisiblePosition visiblePosition(m_startContainer.get(), m_startOffset, VP_DEFAULT_AFFINITY); |
| if (visiblePosition.isNull()) |
| return Position(); |
| |
| ExceptionCode ec = 0; |
| // if the selection is a caret, just return the position, since the style |
| // behind us is relevant |
| if (collapsed(ec)) |
| return visiblePosition.deepEquivalent(); |
| |
| // if the selection starts just before a paragraph break, skip over it |
| if (isEndOfParagraph(visiblePosition)) |
| return visiblePosition.next().deepEquivalent().downstream(); |
| |
| // otherwise, make sure to be at the start of the first selected node, |
| // instead of possibly at the end of the last node before the selection |
| return visiblePosition.deepEquivalent().downstream(); |
| } |
| |
| Node *Range::pastEndNode() const |
| { |
| if (!m_startContainer || !m_endContainer) |
| return 0; |
| if (m_endContainer->offsetInCharacters()) |
| return m_endContainer->traverseNextSibling(); |
| Node *child = m_endContainer->childNode(m_endOffset); |
| if (child) |
| return child; |
| return m_endContainer->traverseNextSibling(); |
| } |
| |
| IntRect Range::boundingBox() |
| { |
| IntRect result; |
| Vector<IntRect> rects; |
| addLineBoxRects(rects); |
| const size_t n = rects.size(); |
| for (size_t i = 0; i < n; ++i) |
| result.unite(rects[i]); |
| return result; |
| } |
| |
| void Range::addLineBoxRects(Vector<IntRect>& rects, bool useSelectionHeight) |
| { |
| if (!m_startContainer || !m_endContainer) |
| return; |
| |
| RenderObject* start = m_startContainer->renderer(); |
| RenderObject* end = m_endContainer->renderer(); |
| if (!start || !end) |
| return; |
| |
| RenderObject* stop = end->nextInPreOrderAfterChildren(); |
| for (RenderObject* r = start; r && r != stop; r = r->nextInPreOrder()) { |
| // only ask leaf render objects for their line box rects |
| if (!r->firstChild()) { |
| int startOffset = r == start ? m_startOffset : 0; |
| int endOffset = r == end ? m_endOffset : UINT_MAX; |
| r->addLineBoxRects(rects, startOffset, endOffset, useSelectionHeight); |
| } |
| } |
| } |
| |
| #ifndef NDEBUG |
| #define FormatBufferSize 1024 |
| void Range::formatForDebugger(char *buffer, unsigned length) const |
| { |
| String result; |
| String s; |
| |
| if (!m_startContainer || !m_endContainer) |
| result = "<empty>"; |
| else { |
| char s[FormatBufferSize]; |
| result += "from offset "; |
| result += String::number(m_startOffset); |
| result += " of "; |
| m_startContainer->formatForDebugger(s, FormatBufferSize); |
| result += s; |
| result += " to offset "; |
| result += String::number(m_endOffset); |
| result += " of "; |
| m_endContainer->formatForDebugger(s, FormatBufferSize); |
| result += s; |
| } |
| |
| strncpy(buffer, result.deprecatedString().latin1(), length - 1); |
| } |
| #undef FormatBufferSize |
| #endif |
| |
| bool operator==(const Range &a, const Range &b) |
| { |
| if (&a == &b) |
| return true; |
| // Not strictly legal C++, but in practice this can happen, and works fine with GCC. |
| if (!&a || !&b) |
| return false; |
| bool ad = a.isDetached(); |
| bool bd = b.isDetached(); |
| if (ad && bd) |
| return true; |
| if (ad || bd) |
| return false; |
| int exception = 0; |
| return a.startContainer(exception) == b.startContainer(exception) |
| && a.endContainer(exception) == b.endContainer(exception) |
| && a.startOffset(exception) == b.startOffset(exception) |
| && a.endOffset(exception) == b.endOffset(exception); |
| } |
| |
| PassRefPtr<Range> rangeOfContents(Node* node) |
| { |
| ASSERT(node); |
| RefPtr<Range> range = new Range(node->document()); |
| int exception = 0; |
| range->selectNodeContents(node, exception); |
| return range.release(); |
| } |
| |
| } |
