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tdelibs/khtml/xml/dom_nodeimpl.cpp

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/*
* This file is part of the DOM implementation for KDE.
*
* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
* (C) 1999 Antti Koivisto (koivisto@kde.org)
* (C) 2001 Dirk Mueller (mueller@kde.org)
* (C) 2003-2006 Apple Computer, Inc.
* (C) 2006 Allan Sandfeld Jensen (kde@carewolf.com)
*
* 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 "dom/dom_exception.h"
#include "misc/htmlattrs.h"
#include "misc/htmltags.h"
#include "xml/dom_elementimpl.h"
#include "xml/dom_textimpl.h"
#include "xml/dom2_eventsimpl.h"
#include "xml/dom_docimpl.h"
#include "xml/dom_nodeimpl.h"
#include "xml/dom_restyler.h"
#include <kglobal.h>
#include <kdebug.h>
#include "rendering/render_text.h"
#include "rendering/render_flow.h"
#include "rendering/render_line.h"
#include "ecma/kjs_proxy.h"
#include "khtmlview.h"
#include "khtml_part.h"
#include "dom_nodeimpl.h"
// from khtml_caret_p.h
namespace khtml {
void /*KDE_NO_EXPORT*/ mapDOMPosToRenderPos(DOM::NodeImpl *node, long offset,
khtml::RenderObject *&r, long &r_ofs, bool &outside, bool &outsideEnd);
}
using namespace DOM;
using namespace khtml;
NodeImpl::NodeImpl(DocumentImpl *doc)
: m_document(doc),
m_previous(0),
m_next(0),
m_render(0),
m_tabIndex( 0 ),
m_hasId( false ),
m_attached(false),
m_closed(false),
m_changed( false ),
m_hasChangedChild( false ),
m_changedAscendentAttribute( false ),
m_inDocument( false ),
m_hasAnchor( false ),
m_specified( false ),
m_hovered( false ),
m_focused( false ),
m_active( false ),
m_implicit( false ),
m_htmlCompat( false ),
m_hasClassList( false ),
m_hasClass( false )
{
}
NodeImpl::~NodeImpl()
{
if (m_render)
detach();
if (m_previous)
m_previous->setNextSibling(0);
if (m_next)
m_next->setPreviousSibling(0);
}
DOMString NodeImpl::nodeValue() const
{
return DOMString();
}
void NodeImpl::setNodeValue( const DOMString &/*_nodeValue*/, int &/*exceptioncode*/ )
{
// by default nodeValue is null, so setting it has no effect
// don't throw NO_MODIFICATION_ALLOWED_ERR from here, DOMTS-Core-Level1's hc_nodevalue03
// (createEntityReference().setNodeValue())) says it would be wrong.
// This must be done by subclasses instead.
}
DOMString NodeImpl::nodeName() const
{
return DOMString();
}
unsigned short NodeImpl::nodeType() const
{
return 0;
}
NodeListImpl *NodeImpl::childNodes()
{
return new ChildNodeListImpl(this);
}
NodeImpl *NodeImpl::firstChild() const
{
return 0;
}
NodeImpl *NodeImpl::lastChild() const
{
return 0;
}
NodeImpl *NodeImpl::insertBefore( NodeImpl *, NodeImpl *, int &exceptioncode )
{
exceptioncode = DOMException::HIERARCHY_REQUEST_ERR;
return 0;
}
void NodeImpl::replaceChild( NodeImpl *, NodeImpl *, int &exceptioncode )
{
exceptioncode = DOMException::HIERARCHY_REQUEST_ERR;
}
void NodeImpl::removeChild( NodeImpl *, int &exceptioncode )
{
exceptioncode = DOMException::NOT_FOUND_ERR;
}
NodeImpl *NodeImpl::appendChild( NodeImpl *, int &exceptioncode )
{
exceptioncode = DOMException::HIERARCHY_REQUEST_ERR;
return 0;
}
bool NodeImpl::hasChildNodes( ) const
{
return false;
}
void NodeImpl::normalize ()
{
// ### normalize attributes? (when we store attributes using child nodes)
int exceptioncode = 0;
NodeImpl *child = firstChild();
// Recursively go through the subtree beneath us, normalizing all nodes. In the case
// where there are two adjacent text nodes, they are merged together
while (child) {
NodeImpl *nextChild = child->nextSibling();
if (nextChild && child->nodeType() == Node::TEXT_NODE && nextChild->nodeType() == Node::TEXT_NODE) {
// Current child and the next one are both text nodes... merge them
TextImpl *currentText = static_cast<TextImpl*>(child);
TextImpl *nextText = static_cast<TextImpl*>(nextChild);
currentText->appendData(nextText->data(),exceptioncode);
if (exceptioncode)
return;
removeChild(nextChild,exceptioncode);
if (exceptioncode)
return;
}
else {
child->normalize();
child = nextChild;
}
}
}
DOMString NodeImpl::prefix() const
{
// For nodes other than elements and attributes, the prefix is always null
return DOMString();
}
DOMString NodeImpl::namespaceURI() const
{
return DOMString();
}
void NodeImpl::setPrefix(const DOMString &/*_prefix*/, int &exceptioncode )
{
// The spec says that for nodes other than elements and attributes, prefix is always null.
// It does not say what to do when the user tries to set the prefix on another type of
// node, however mozilla throws a NAMESPACE_ERR exception
exceptioncode = DOMException::NAMESPACE_ERR;
}
DOMString NodeImpl::localName() const
{
return DOMString();
}
void NodeImpl::setFirstChild(NodeImpl *)
{
}
void NodeImpl::setLastChild(NodeImpl *)
{
}
NodeImpl *NodeImpl::addChild(NodeImpl *)
{
return 0;
}
void NodeImpl::getCaret(int offset, bool override, int &_x, int &_y, int &width, int &height)
{
if (m_render) {
RenderObject *r;
long r_ofs;
bool outside, outsideEnd;
#if 0
kdDebug(6200) << "getCaret: node " << this << " " << nodeName().string() << " offset: " << offset << endl;
#endif
mapDOMPosToRenderPos(this, offset, r, r_ofs, outside, outsideEnd);
#if 0
kdDebug(6200) << "getCaret: r " << r << " " << (r?r->renderName():TQString::null) << " r_ofs: " << r_ofs << " outside " << outside << " outsideEnd " << outsideEnd << endl;
#endif
if (r) {
r->caretPos(r_ofs, override*RenderObject::CFOverride
+ outside*RenderObject::CFOutside
+ outsideEnd*RenderObject::CFOutsideEnd, _x, _y, width, height);
} else
_x = _y = height = -1, width = 1;
} else _x = _y = height = -1, width = 1;
}
TQRect NodeImpl::getRect() const
{
int _x, _y;
if(m_render && m_render->absolutePosition(_x, _y))
return TQRect( _x + m_render->inlineXPos(), _y + m_render->inlineYPos(),
m_render->width(), m_render->height() + renderer()->borderTopExtra() + renderer()->borderBottomExtra() );
return TQRect();
}
void NodeImpl::setChanged(bool b)
{
if (b && !attached()) // changed compared to what?
return;
m_changed = b;
if ( b ) {
NodeImpl *p = parentNode();
while ( p ) {
p->setHasChangedChild( true );
p = p->parentNode();
}
getDocument()->setDocumentChanged();
}
}
bool NodeImpl::isInline() const
{
if (m_render) return m_render->style()->display() == khtml::INLINE;
return !isElementNode();
}
unsigned long NodeImpl::nodeIndex() const
{
NodeImpl *_tempNode = previousSibling();
unsigned long count=0;
for( count=0; _tempNode; count++ )
_tempNode = _tempNode->previousSibling();
return count;
}
void NodeImpl::addEventListener(int id, EventListener *listener, const bool useCapture)
{
switch (id) {
case EventImpl::DOMSUBTREEMODIFIED_EVENT:
getDocument()->addListenerType(DocumentImpl::DOMSUBTREEMODIFIED_LISTENER);
break;
case EventImpl::DOMNODEINSERTED_EVENT:
getDocument()->addListenerType(DocumentImpl::DOMNODEINSERTED_LISTENER);
break;
case EventImpl::DOMNODEREMOVED_EVENT:
getDocument()->addListenerType(DocumentImpl::DOMNODEREMOVED_LISTENER);
break;
case EventImpl::DOMNODEREMOVEDFROMDOCUMENT_EVENT:
getDocument()->addListenerType(DocumentImpl::DOMNODEREMOVEDFROMDOCUMENT_LISTENER);
break;
case EventImpl::DOMNODEINSERTEDINTODOCUMENT_EVENT:
getDocument()->addListenerType(DocumentImpl::DOMNODEINSERTEDINTODOCUMENT_LISTENER);
break;
case EventImpl::DOMATTRMODIFIED_EVENT:
getDocument()->addListenerType(DocumentImpl::DOMATTRMODIFIED_LISTENER);
break;
case EventImpl::DOMCHARACTERDATAMODIFIED_EVENT:
getDocument()->addListenerType(DocumentImpl::DOMCHARACTERDATAMODIFIED_LISTENER);
break;
default:
break;
}
m_regdListeners.addEventListener(id, listener, useCapture);
}
void NodeImpl::removeEventListener(int id, EventListener *listener, bool useCapture)
{
m_regdListeners.removeEventListener(id, listener, useCapture);
}
void NodeImpl::setHTMLEventListener(int id, EventListener *listener)
{
m_regdListeners.setHTMLEventListener(id, listener);
}
EventListener *NodeImpl::getHTMLEventListener(int id)
{
return m_regdListeners.getHTMLEventListener(id);
}
void NodeImpl::dispatchEvent(EventImpl *evt, int &exceptioncode, bool tempEvent)
{
evt->setTarget(this);
// Since event handling code could cause this object to be deleted, grab a reference to the view now
KHTMLView *view = getDocument()->view();
dispatchGenericEvent( evt, exceptioncode );
// If tempEvent is true, this means that the DOM implementation will not be storing a reference to the event, i.e.
// there is no way to retrieve it from javascript if a script does not already have a reference to it in a variable.
// So there is no need for the interpreter to keep the event in its cache
if (tempEvent && view && view->part() && view->part()->jScript())
view->part()->jScript()->finishedWithEvent(evt);
}
void NodeImpl::dispatchGenericEvent( EventImpl *evt, int &/*exceptioncode */)
{
// ### check that type specified
// work out what nodes to send event to
TQPtrList<NodeImpl> nodeChain;
NodeImpl *n;
for (n = this; n; n = n->parentNode()) {
n->ref();
nodeChain.prepend(n);
}
// trigger any capturing event handlers on our way down
evt->setEventPhase(Event::CAPTURING_PHASE);
TQPtrListIterator<NodeImpl> it(nodeChain);
for (; it.current() && it.current() != this && !evt->propagationStopped(); ++it) {
evt->setCurrentTarget(it.current());
it.current()->handleLocalEvents(evt,true);
}
// dispatch to the actual target node
it.toLast();
NodeImpl* propagationSentinel = 0;
if (!evt->propagationStopped()) {
evt->setEventPhase(Event::AT_TARGET);
evt->setCurrentTarget(it.current());
it.current()->handleLocalEvents(evt, true);
if (!evt->propagationStopped())
it.current()->handleLocalEvents(evt,false);
else
propagationSentinel = it.current();
}
--it;
if (evt->bubbles()) {
evt->setEventPhase(Event::BUBBLING_PHASE);
for (; it.current() && !evt->propagationStopped(); --it) {
if (evt->propagationStopped()) propagationSentinel = it.current();
evt->setCurrentTarget(it.current());
it.current()->handleLocalEvents(evt,false);
}
// now we call all default event handlers (this is not part of DOM - it is internal to khtml)
evt->setCurrentTarget(0);
evt->setEventPhase(0); // I guess this is correct, the spec does not seem to say
for (it.toLast(); it.current() && it.current() != propagationSentinel &&
!evt->defaultPrevented() && !evt->defaultHandled(); --it)
it.current()->defaultEventHandler(evt);
if (evt->id() == EventImpl::CLICK_EVENT && !evt->defaultPrevented() &&
static_cast<MouseEventImpl*>( evt )->button() == 0) // LMB click
dispatchUIEvent(EventImpl::DOMACTIVATE_EVENT, static_cast<UIEventImpl*>(evt)->detail());
}
// copy this over into a local variable, as the following deref() calls might cause this to be deleted.
DocumentImpl *doc = m_document.get();
doc->ref();
// deref all nodes in chain
it.toFirst();
for (; it.current(); ++it)
it.current()->deref(); // this may delete us
DocumentImpl::updateDocumentsRendering();
doc->deref();
}
bool NodeImpl::dispatchHTMLEvent(int _id, bool canBubbleArg, bool cancelableArg)
{
int exceptioncode = 0;
EventImpl* const evt = new EventImpl(static_cast<EventImpl::EventId>(_id),canBubbleArg,cancelableArg);
evt->ref();
dispatchEvent(evt,exceptioncode,true);
bool ret = !evt->defaultPrevented();
evt->deref();
return ret;
}
void NodeImpl::dispatchWindowEvent(int _id, bool canBubbleArg, bool cancelableArg)
{
int exceptioncode = 0;
EventImpl* const evt = new EventImpl(static_cast<EventImpl::EventId>(_id),canBubbleArg,cancelableArg);
evt->setTarget( 0 );
evt->ref();
DocumentImpl *doc = getDocument();
doc->ref();
dispatchGenericEvent( evt, exceptioncode );
if (!evt->defaultPrevented() && doc)
doc->defaultEventHandler(evt);
if (_id == EventImpl::LOAD_EVENT && !evt->propagationStopped() && doc) {
// For onload events, send them to the enclosing frame only.
// This is a DOM extension and is independent of bubbling/capturing rules of
// the DOM. You send the event only to the enclosing frame. It does not
// bubble through the parent document.
DOM::ElementImpl* elt = doc->ownerElement();
if (elt && (elt->getDocument()->domain().isNull() ||
elt->getDocument()->domain() == doc->domain())) {
// We also do a security check, since we don't want to allow the enclosing
// iframe to see loads of child documents in other domains.
evt->setCurrentTarget(elt);
// Capturing first.
elt->handleLocalEvents(evt,true);
// Bubbling second.
if (!evt->propagationStopped())
elt->handleLocalEvents(evt,false);
}
}
doc->deref();
evt->deref();
}
void NodeImpl::dispatchMouseEvent(TQMouseEvent *_mouse, int overrideId, int overrideDetail)
{
bool cancelable = true;
int detail = overrideDetail; // defaults to 0
EventImpl::EventId evtId = EventImpl::UNKNOWN_EVENT;
if (overrideId) {
evtId = static_cast<EventImpl::EventId>(overrideId);
}
else {
switch (_mouse->type()) {
case TQEvent::MouseButtonPress:
evtId = EventImpl::MOUSEDOWN_EVENT;
break;
case TQEvent::MouseButtonRelease:
evtId = EventImpl::MOUSEUP_EVENT;
break;
case TQEvent::MouseButtonDblClick:
evtId = EventImpl::CLICK_EVENT;
detail = 1; // ### support for multiple double clicks
break;
case TQEvent::MouseMove:
evtId = EventImpl::MOUSEMOVE_EVENT;
cancelable = false;
break;
default:
break;
}
}
if (evtId == EventImpl::UNKNOWN_EVENT)
return; // shouldn't happen
int exceptioncode = 0;
int pageX = _mouse->x();
int pageY = _mouse->y();
int clientX = pageX;
int clientY = pageY;
if ( getDocument()->view() )
getDocument()->view()->viewportToContents( clientX, clientY, pageX, pageY );
int screenX = _mouse->globalX();
int screenY = _mouse->globalY();
int button = -1;
switch (_mouse->button()) {
case Qt::LeftButton:
button = 0;
break;
case Qt::MidButton:
button = 1;
break;
case Qt::RightButton:
button = 2;
break;
default:
break;
}
bool ctrlKey = (_mouse->state() & TQt::ControlButton);
bool altKey = (_mouse->state() & TQt::AltButton);
bool shiftKey = (_mouse->state() & TQt::ShiftButton);
bool metaKey = false; // ### qt support?
EventImpl* const evt = new MouseEventImpl(evtId,true,cancelable,getDocument()->defaultView(),
detail,screenX,screenY,clientX,clientY,pageX,pageY,ctrlKey,altKey,shiftKey,metaKey,
button,0);
evt->ref();
dispatchEvent(evt,exceptioncode,true);
evt->deref();
}
void NodeImpl::dispatchUIEvent(int _id, int detail)
{
assert (!( (_id != EventImpl::DOMFOCUSIN_EVENT &&
_id != EventImpl::DOMFOCUSOUT_EVENT &&
_id != EventImpl::DOMACTIVATE_EVENT)));
bool cancelable = false;
if (_id == EventImpl::DOMACTIVATE_EVENT)
cancelable = true;
int exceptioncode = 0;
UIEventImpl* const evt = new UIEventImpl(static_cast<EventImpl::EventId>(_id),true,
cancelable,getDocument()->defaultView(),detail);
evt->ref();
dispatchEvent(evt,exceptioncode,true);
evt->deref();
}
void NodeImpl::dispatchSubtreeModifiedEvent()
{
childrenChanged();
getDocument()->incDOMTreeVersion();
if (!getDocument()->hasListenerType(DocumentImpl::DOMSUBTREEMODIFIED_LISTENER))
return;
int exceptioncode = 0;
MutationEventImpl* const evt = new MutationEventImpl(EventImpl::DOMSUBTREEMODIFIED_EVENT,true,
false,0,DOMString(),DOMString(),DOMString(),0);
evt->ref();
dispatchEvent(evt,exceptioncode,true);
evt->deref();
}
bool NodeImpl::dispatchKeyEvent(TQKeyEvent *key, bool keypress)
{
int exceptioncode = 0;
//kdDebug(6010) << "DOM::NodeImpl: dispatching keyboard event" << endl;
EventImpl* keyEventImpl;
if (keypress)
keyEventImpl = new TextEventImpl(key, getDocument()->defaultView());
else
keyEventImpl = new KeyboardEventImpl(key, getDocument()->defaultView());
keyEventImpl->ref();
dispatchEvent(keyEventImpl,exceptioncode,true);
bool r = keyEventImpl->defaultHandled() || keyEventImpl->defaultPrevented();
keyEventImpl->deref();
return r;
}
void NodeImpl::handleLocalEvents(EventImpl *evt, bool useCapture)
{
if (!m_regdListeners.listeners)
return;
Event ev = evt;
// removeEventListener (e.g. called from a JS event listener) might
// tqinvalidate the item after the current iterator (which "it" is pointing to).
// So we make a copy of the list.
TQValueList<RegisteredEventListener> listeners = *m_regdListeners.listeners;
TQValueList<RegisteredEventListener>::iterator it;
for (it = listeners.begin(); it != listeners.end(); ++it) {
//Check whether this got removed...KDE4: use Java-style iterators
if (!m_regdListeners.stillContainsListener(*it))
continue;
RegisteredEventListener& current = (*it);
if (current.id == evt->id() && current.useCapture == useCapture)
current.listener->handleEvent(ev);
// ECMA legacy hack
if (current.useCapture == useCapture && evt->id() == EventImpl::CLICK_EVENT) {
MouseEventImpl* me = static_cast<MouseEventImpl*>(evt);
if (me->button() == 0) {
// To find whether to call onclick or ondblclick, we can't
// * use me->detail(), it's 2 when clicking twice w/o moving, even very slowly
// * use me->qEvent(), it's not available when using initMouseEvent/dispatchEvent
// So we currently store a bool in MouseEventImpl. If anyone needs to trigger
// dblclicks from the DOM API, we'll need a timer here (well in the doc).
if ( ( !me->isDoubleClick() && current.id == EventImpl::KHTML_ECMA_CLICK_EVENT) ||
( me->isDoubleClick() && current.id == EventImpl::KHTML_ECMA_DBLCLICK_EVENT) )
current.listener->handleEvent(ev);
}
}
}
}
void NodeImpl::defaultEventHandler(EventImpl *)
{
}
unsigned long NodeImpl::childNodeCount()
{
return 0;
}
NodeImpl *NodeImpl::childNode(unsigned long /*index*/)
{
return 0;
}
NodeImpl *NodeImpl::traverseNextNode(NodeImpl *stayWithin) const
{
if (firstChild() || stayWithin == this)
return firstChild();
else if (nextSibling())
return nextSibling();
else {
const NodeImpl *n = this;
while (n && !n->nextSibling() && (!stayWithin || n->parentNode() != stayWithin))
n = n->parentNode();
if (n)
return n->nextSibling();
}
return 0;
}
NodeImpl *NodeImpl::traversePreviousNode() const
{
if (previousSibling()) {
NodeImpl *n = previousSibling();
while (n->lastChild())
n = n->lastChild();
return n;
}
else if (parentNode()) {
return parentNode();
}
else {
return 0;
}
}
void NodeImpl::checkSetPrefix(const DOMString &_prefix, int &exceptioncode)
{
// Perform error checking as required by spec for setting Node.prefix. Used by
// ElementImpl::setPrefix() and AttrImpl::setPrefix()
// INVALID_CHARACTER_ERR: Raised if the specified prefix contains an illegal character.
if (!Element::khtmlValidPrefix(_prefix)) {
exceptioncode = DOMException::INVALID_CHARACTER_ERR;
return;
}
// NO_MODIFICATION_ALLOWED_ERR: Raised if this node is readonly.
if (isReadOnly()) {
exceptioncode = DOMException::NO_MODIFICATION_ALLOWED_ERR;
return;
}
// NAMESPACE_ERR: - Raised if the specified prefix is malformed
// - if the namespaceURI of this node is null,
// - if the specified prefix is "xml" and the namespaceURI of this node is different from
// "http://www.w3.org/XML/1998/namespace",
// - if this node is an attribute and the specified prefix is "xmlns" and
// the namespaceURI of this node is different from "http://www.w3.org/2000/xmlns/",
// - or if this node is an attribute and the qualifiedName of this node is "xmlns" [Namespaces].
if (Element::khtmlMalformedPrefix(_prefix) || (namespacePart(id()) == defaultNamespace && id() > ID_LAST_TAG) ||
(_prefix == "xml" && namespaceURI() != "http://www.w3.org/XML/1998/namespace")) {
exceptioncode = DOMException::NAMESPACE_ERR;
return;
}
}
void NodeImpl::checkAddChild(NodeImpl *newChild, int &exceptioncode)
{
// Perform error checking as required by spec for adding a new child. Used by
// appendChild(), replaceChild() and insertBefore()
// Not mentioned in spec: throw NOT_FOUND_ERR if newChild is null
if (!newChild) {
exceptioncode = DOMException::NOT_FOUND_ERR;
return;
}
// NO_MODIFICATION_ALLOWED_ERR: Raised if this node is readonly
if (isReadOnly()) {
exceptioncode = DOMException::NO_MODIFICATION_ALLOWED_ERR;
return;
}
// WRONG_DOCUMENT_ERR: Raised if newChild was created from a different document than the one that
// created this node.
// We assume that if newChild is a DocumentFragment, all children are created from the same document
// as the fragment itself (otherwise they could not have been added as children)
if (newChild->getDocument() != getDocument()) {
exceptioncode = DOMException::WRONG_DOCUMENT_ERR;
return;
}
// HIERARCHY_REQUEST_ERR: Raised if this node is of a type that does not allow children of the type of the
// newChild node, or if the node to append is one of this node's ancestors.
// check for ancestor/same node
if (isAncestor(newChild)) {
exceptioncode = DOMException::HIERARCHY_REQUEST_ERR;
return;
}
// check node allowed
if (newChild->nodeType() == Node::DOCUMENT_FRAGMENT_NODE) {
// newChild is a DocumentFragment... check all its children instead of newChild itself
NodeImpl *child;
for (child = newChild->firstChild(); child; child = child->nextSibling()) {
if (!childTypeAllowed(child->nodeType())) {
exceptioncode = DOMException::HIERARCHY_REQUEST_ERR;
return;
}
}
}
else {
// newChild is not a DocumentFragment... check if it's allowed directly
if(!childTypeAllowed(newChild->nodeType())) {
exceptioncode = DOMException::HIERARCHY_REQUEST_ERR;
return;
}
}
}
bool NodeImpl::isAncestor( NodeImpl *other )
{
// Return true if other is the same as this node or an ancestor of it, otherwise false
NodeImpl *n;
for (n = this; n; n = n->parentNode()) {
if (n == other)
return true;
}
return false;
}
bool NodeImpl::childAllowed( NodeImpl *newChild )
{
return childTypeAllowed(newChild->nodeType());
}
NodeImpl::StyleChange NodeImpl::diff( khtml::RenderStyle *s1, khtml::RenderStyle *s2 )
{
// This method won't work when a style contains noninherited properties with "inherit" value.
StyleChange ch = NoInherit;
EDisplay display1 = s1 ? s1->display() : NONE;
EDisplay display2 = s2 ? s2->display() : NONE;
EPosition position1 = s1 ? s1->position() : STATIC;
EPosition position2 = s2 ? s2->position() : STATIC;
if (display1 != display2 || position1 != position2)
ch = Detach;
else if ( !s1 || !s2 )
ch = Inherit;
else if ( *s1 == *s2 )
ch = NoChange;
else if (s1->useNormalContent() != s2->useNormalContent())
ch = Detach; // when we add generated content all children must be detached
else if ( s1->inheritedNotEqual( s2 ) )
ch = Inherit;
// Because the first-letter implementation is so f..ked up, the easiest way
// to update first-letter is to remove the entire node and readd it.
if (ch < Detach && pseudoDiff(s1, s2, khtml::RenderStyle::FIRST_LETTER))
ch = Detach;
// If the other pseudoStyles have changed, we want to return NoInherit
if (ch == NoChange && pseudoDiff(s1, s2, khtml::RenderStyle::BEFORE))
ch = NoInherit;
if (ch == NoChange && pseudoDiff(s1, s2, khtml::RenderStyle::AFTER))
ch = NoInherit;
if (ch == NoChange && pseudoDiff(s1, s2, khtml::RenderStyle::MARKER))
ch = NoInherit;
if (ch == NoChange && pseudoDiff(s1, s2, khtml::RenderStyle::SELECTION))
ch = NoInherit;
if (ch == NoChange && pseudoDiff(s1, s2, khtml::RenderStyle::FIRST_LINE))
ch = NoInherit;
return ch;
}
bool NodeImpl::pseudoDiff( khtml::RenderStyle *s1, khtml::RenderStyle *s2, unsigned int pid)
{
khtml::RenderStyle *ps1 = s1 ? s1->getPseudoStyle((khtml::RenderStyle::PseudoId)pid) : 0;
khtml::RenderStyle *ps2 = s2 ? s2->getPseudoStyle((khtml::RenderStyle::PseudoId)pid) : 0;
if (ps1 == ps2)
return false;
else
if (ps1 && ps2) {
if (*ps1 == *ps2)
return false;
else
return true;
}
else
return true;
}
void NodeImpl::close()
{
if (m_render) m_render->close();
m_closed = true;
}
void NodeImpl::attach()
{
assert(!attached());
assert(!m_render || (m_render->style() && m_render->parent()));
if (m_render) // set states to match node
{
if (closed()) m_render->close();
if (hovered()) m_render->setMouseInside();
}
getDocument()->incDOMTreeVersion();
m_attached = true;
}
void NodeImpl::detach()
{
// assert(m_attached);
if ( m_render )
m_render->detach();
m_render = 0;
getDocument()->incDOMTreeVersion();
m_attached = false;
}
bool NodeImpl::maintainsState()
{
return false;
}
TQString NodeImpl::state()
{
return TQString::null;
}
void NodeImpl::restoreState(const TQString &/*state*/)
{
}
void NodeImpl::insertedIntoDocument()
{
setInDocument(true);
}
void NodeImpl::removedFromDocument()
{
setInDocument(false);
}
void NodeImpl::childrenChanged()
{
if (parentNode())
parentNode()->childrenChanged();
}
bool NodeImpl::isReadOnly()
{
// Entity & Entity Reference nodes and their descendants are read-only
NodeImpl *n = this;
while (n) {
if (n->nodeType() == Node::ENTITY_NODE ||
n->nodeType() == Node::ENTITY_REFERENCE_NODE)
return true;
n = n->parentNode();
}
return false;
}
RenderObject * NodeImpl::previousRenderer()
{
for (NodeImpl *n = previousSibling(); n; n = n->previousSibling()) {
if (n->renderer())
return n->renderer();
}
return 0;
}
RenderObject * NodeImpl::nextRenderer()
{
for (NodeImpl *n = nextSibling(); n; n = n->nextSibling()) {
if (n->renderer())
return n->renderer();
}
return 0;
}
void NodeImpl::createRendererIfNeeded()
{
#ifdef APPLE_CHANGES
if (!getDocument()->shouldCreateRenderers())
return;
#endif
assert(!m_render);
NodeImpl *parent = parentNode();
assert(parent);
RenderObject *parentRenderer = parent->renderer();
if (parentRenderer && parentRenderer->childAllowed()) {
RenderStyle *style = styleForRenderer(parentRenderer);
style->ref();
if (rendererIsNeeded(style)) {
m_render = createRenderer(getDocument()->renderArena(), style);
m_render->setStyle(style);
parentRenderer->addChild(m_render, nextRenderer());
}
style->deref();
}
}
RenderStyle *NodeImpl::styleForRenderer(RenderObject *parent)
{
return parent->style();
}
bool NodeImpl::rendererIsNeeded(RenderStyle *style)
{
return (getDocument()->documentElement() == this) || (style->display() != NONE);
}
RenderObject *NodeImpl::createRenderer(RenderArena* /*arena*/, RenderStyle* /*style*/)
{
assert(false);
return 0;
}
bool NodeImpl::contentEditable() const
{
RenderObject *r = renderer();
if (!r || !r->style()) return false;
return r->style()->userInput() == UI_ENABLED;
}
long NodeImpl::minOffset() const
{
// Arrgh! You'd think *every* offset starts at zero, but loo,
// therefore we need this method
return renderer() ? renderer()->minOffset() : 0;
}
long NodeImpl::maxOffset() const
{
return const_cast<NodeImpl *>(this)->childNodeCount();
// return renderer() ? renderer()->maxOffset() : 1;
}
DOMStringImpl* NodeImpl::textContent() const
{
TQString out;
for (NodeImpl *child = firstChild(); child != 0; child = child->nextSibling()) {
short type = child->nodeType();
if (type != Node::COMMENT_NODE && type != Node::PROCESSING_INSTRUCTION_NODE) {
DOMStringImpl* kidText = child->textContent();
if (kidText)
out += TQConstString(kidText->s, kidText->l).string();
delete kidText;
}
}
return new DOMStringImpl(out.tqunicode(), out.length());
}
//-------------------------------------------------------------------------
NodeBaseImpl::~NodeBaseImpl()
{
//kdDebug( 6020 ) << "NodeBaseImpl destructor" << endl;
// we have to tell all children, that the parent has died...
NodeImpl *n;
NodeImpl *next;
for( n = _first; n != 0; n = next ) {
next = n->nextSibling();
n->setPreviousSibling(0);
n->setNextSibling(0);
n->setParent(0);
if ( !n->refCount() )
delete n;
}
}
NodeImpl *NodeBaseImpl::firstChild() const
{
return _first;
}
NodeImpl *NodeBaseImpl::lastChild() const
{
return _last;
}
NodeImpl *NodeBaseImpl::insertBefore ( NodeImpl *newChild, NodeImpl *refChild, int &exceptioncode )
{
exceptioncode = 0;
// insertBefore(...,null) is equivalent to appendChild()
if(!refChild)
return appendChild(newChild, exceptioncode);
// Make sure adding the new child is ok
checkAddChild(newChild, exceptioncode);
if (exceptioncode)
return 0;
// NOT_FOUND_ERR: Raised if refChild is not a child of this node
if (refChild->parentNode() != this) {
exceptioncode = DOMException::NOT_FOUND_ERR;
return 0;
}
bool isFragment = newChild->nodeType() == Node::DOCUMENT_FRAGMENT_NODE;
// If newChild is a DocumentFragment with no children.... there's nothing to do.
// Just return the document fragment
if (isFragment && !newChild->firstChild())
return newChild;
// Now actually add the child(ren)
NodeImpl *nextChild;
NodeImpl *child = isFragment ? newChild->firstChild() : newChild;
NodeImpl *prev = refChild->previousSibling();
if ( prev == newChild || refChild == newChild ) // nothing to do
return newChild;
while (child) {
nextChild = isFragment ? child->nextSibling() : 0;
// If child is already present in the tree, first remove it
NodeImpl *newParent = child->parentNode();
//...guard it in case we need to move it..
SharedPtr<NodeImpl> guard(child);
if(newParent)
newParent->removeChild( child, exceptioncode );
if ( exceptioncode )
return 0;
// Add child in the correct position
if (prev)
prev->setNextSibling(child);
else
_first = child;
refChild->setPreviousSibling(child);
child->setParent(this);
child->setPreviousSibling(prev);
child->setNextSibling(refChild);
// Add child to the rendering tree
// ### should we detach() it first if it's already attached?
if (attached() && !child->attached())
child->attach();
// Dispatch the mutation events
dispatchChildInsertedEvents(child,exceptioncode);
prev = child;
child = nextChild;
}
structureChanged();
// ### set style in case it's attached
dispatchSubtreeModifiedEvent();
return newChild;
}
void NodeBaseImpl::replaceChild ( NodeImpl *newChild, NodeImpl *oldChild, int &exceptioncode )
{
exceptioncode = 0;
if ( oldChild == newChild ) // nothing to do
return;
// Make sure adding the new child is ok
checkAddChild(newChild, exceptioncode);
if (exceptioncode)
return;
// NOT_FOUND_ERR: Raised if oldChild is not a child of this node.
if (!oldChild || oldChild->parentNode() != this) {
exceptioncode = DOMException::NOT_FOUND_ERR;
return;
}
bool isFragment = newChild->nodeType() == Node::DOCUMENT_FRAGMENT_NODE;
NodeImpl *nextChild;
NodeImpl *child = isFragment ? newChild->firstChild() : newChild;
// Remove the old child
NodeImpl *prev = oldChild->previousSibling();
NodeImpl *next = oldChild->nextSibling();
removeChild(oldChild, exceptioncode);
if (exceptioncode)
return;
// Add the new child(ren)
while (child) {
nextChild = isFragment ? child->nextSibling() : 0;
// If child is already present in the tree, first remove it
NodeImpl *newParent = child->parentNode();
if ( child == next )
next = child->nextSibling();
if ( child == prev )
prev = child->previousSibling();
//...guard it in case we need to move it..
SharedPtr<NodeImpl> guard(child);
if(newParent)
newParent->removeChild( child, exceptioncode );
if (exceptioncode)
return;
// Add child in the correct position
if (prev) prev->setNextSibling(child);
if (next) next->setPreviousSibling(child);
if(!prev) _first = child;
if(!next) _last = child;
child->setParent(this);
child->setPreviousSibling(prev);
child->setNextSibling(next);
// Add child to the rendering tree
// ### should we detach() it first if it's already attached?
if (attached() && !child->attached())
child->attach();
// Dispatch the mutation events
dispatchChildInsertedEvents(child,exceptioncode);
prev = child;
child = nextChild;
}
structureChanged();
// ### set style in case it's attached
dispatchSubtreeModifiedEvent();
return;
}
void NodeBaseImpl::removeChild ( NodeImpl *oldChild, int &exceptioncode )
{
exceptioncode = 0;
// NO_MODIFICATION_ALLOWED_ERR: Raised if this node is readonly.
if (isReadOnly()) {
exceptioncode = DOMException::NO_MODIFICATION_ALLOWED_ERR;
return;
}
// NOT_FOUND_ERR: Raised if oldChild is not a child of this node.
if (!oldChild || oldChild->parentNode() != this) {
exceptioncode = DOMException::NOT_FOUND_ERR;
return;
}
dispatchChildRemovalEvents(oldChild,exceptioncode);
if (exceptioncode)
return;
SharedPtr<NodeImpl> memManage(oldChild); //Make sure to free if needed
// Remove from rendering tree
if (oldChild->attached())
oldChild->detach();
// Remove the child
NodeImpl *prev, *next;
prev = oldChild->previousSibling();
next = oldChild->nextSibling();
if(next) next->setPreviousSibling(prev);
if(prev) prev->setNextSibling(next);
if(_first == oldChild) _first = next;
if(_last == oldChild) _last = prev;
oldChild->setPreviousSibling(0);
oldChild->setNextSibling(0);
oldChild->setParent(0);
structureChanged();
// Dispatch post-removal mutation events
dispatchSubtreeModifiedEvent();
NodeImpl *p = this;
while (p->parentNode())
p = p->parentNode();
if (p->nodeType() == Node::DOCUMENT_NODE) {
for (NodeImpl *c = oldChild; c; c = c->traverseNextNode(oldChild))
c->removedFromDocument();
}
}
void NodeBaseImpl::removeChildren()
{
bool inDoc = inDocument();
NodeImpl *n, *next;
for( n = _first, _first = 0; n; n = next )
{
next = n->nextSibling();
if (n->attached())
n->detach();
n->setPreviousSibling(0);
n->setNextSibling(0);
n->setParent(0);
if ( inDoc )
for ( NodeImpl* c = n; c; c = c->traverseNextNode( n ) )
c->removedFromDocument();
if( !n->refCount() )
delete n;
}
_last = 0;
}
NodeImpl *NodeBaseImpl::appendChild ( NodeImpl *newChild, int &exceptioncode )
{
exceptioncode = 0;
// Make sure adding the new child is ok
checkAddChild(newChild, exceptioncode);
if (exceptioncode)
return 0;
if ( newChild == _last ) // nothing to do
return newChild;
bool isFragment = newChild->nodeType() == Node::DOCUMENT_FRAGMENT_NODE;
// If newChild is a DocumentFragment with no children.... there's nothing to do.
// Just return the document fragment
if (isFragment && !newChild->firstChild())
return newChild;
// Now actually add the child(ren)
NodeImpl *nextChild;
NodeImpl *child = isFragment ? newChild->firstChild() : newChild;
while (child) {
nextChild = isFragment ? child->nextSibling() : 0;
// If child is already present in the tree, first remove it
NodeImpl *oldParent = child->parentNode();
SharedPtr<NodeImpl> guard(child); //Guard in case we move it
if(oldParent) {
oldParent->removeChild( child, exceptioncode );
if (exceptioncode)
return 0;
}
// Append child to the end of the list
child->setParent(this);
if(_last)
{
child->setPreviousSibling(_last);
_last->setNextSibling(child);
_last = child;
}
else
{
_first = _last = child;
}
// Add child to the rendering tree
// ### should we detach() it first if it's already attached?
if (attached() && !child->attached())
child->attach();
// Dispatch the mutation events
dispatchChildInsertedEvents(child,exceptioncode);
child = nextChild;
}
backwardsStructureChanged();
// ### set style in case it's attached
dispatchSubtreeModifiedEvent();
return newChild;
}
bool NodeBaseImpl::hasChildNodes ( ) const
{
return _first != 0;
}
// not part of the DOM
void NodeBaseImpl::setFirstChild(NodeImpl *child)
{
_first = child;
}
void NodeBaseImpl::setLastChild(NodeImpl *child)
{
_last = child;
}
// check for same source document:
bool NodeBaseImpl::checkSameDocument( NodeImpl *newChild, int &exceptioncode )
{
exceptioncode = 0;
DocumentImpl *ownerDocThis = getDocument();
DocumentImpl *ownerDocNew = newChild->getDocument();
if(ownerDocThis != ownerDocNew) {
kdDebug(6010)<< "not same document, newChild = " << newChild << "document = " << getDocument() << endl;
exceptioncode = DOMException::WRONG_DOCUMENT_ERR;
return true;
}
return false;
}
// check for being child:
bool NodeBaseImpl::checkIsChild( NodeImpl *oldChild, int &exceptioncode )
{
if(!oldChild || oldChild->parentNode() != this) {
exceptioncode = DOMException::NOT_FOUND_ERR;
return true;
}
return false;
}
NodeImpl *NodeBaseImpl::addChild(NodeImpl *newChild)
{
// do not add applyChanges here! This function is only used during parsing
// short check for consistency with DTD
if(getDocument()->isHTMLDocument() && !childAllowed(newChild))
{
//kdDebug( 6020 ) << "AddChild failed! id=" << id() << ", child->id=" << newChild->id() << endl;
return 0;
}
// just add it...
newChild->setParent(this);
if(_last)
{
newChild->setPreviousSibling(_last);
_last->setNextSibling(newChild);
_last = newChild;
}
else
{
_first = _last = newChild;
}
if (inDocument())
newChild->insertedIntoDocument();
childrenChanged();
if(newChild->nodeType() == Node::ELEMENT_NODE)
return newChild;
return this;
}
void NodeBaseImpl::attach()
{
NodeImpl *child = _first;
while(child != 0)
{
child->attach();
child = child->nextSibling();
}
NodeImpl::attach();
}
void NodeBaseImpl::detach()
{
NodeImpl *child = _first;
while(child != 0)
{
NodeImpl* prev = child;
child = child->nextSibling();
prev->detach();
}
NodeImpl::detach();
}
void NodeBaseImpl::cloneChildNodes(NodeImpl *clone)
{
int exceptioncode = 0;
NodeImpl *n;
for(n = firstChild(); n && !exceptioncode; n = n->nextSibling())
{
clone->appendChild(n->cloneNode(true),exceptioncode);
}
}
// I don't like this way of implementing the method, but I didn't find any
// other way. Lars
bool NodeBaseImpl::getUpperLeftCorner(int &xPos, int &yPos) const
{
if (!m_render)
return false;
RenderObject *o = m_render;
xPos = yPos = 0;
if ( !o->isInline() || o->isReplaced() ) {
o->absolutePosition( xPos, yPos );
return true;
}
// find the next text/image child, to get a position
while(o) {
if(o->firstChild())
o = o->firstChild();
else if(o->nextSibling())
o = o->nextSibling();
else {
RenderObject *next = 0;
while(!next) {
o = o->parent();
if(!o) return false;
next = o->nextSibling();
}
o = next;
}
if((o->isText() && !o->isBR()) || o->isReplaced()) {
o->container()->absolutePosition( xPos, yPos );
if (o->isText()) {
xPos += o->inlineXPos();
yPos += o->inlineYPos();
} else {
xPos += o->xPos();
yPos += o->yPos();
}
return true;
}
}
return true;
}
bool NodeBaseImpl::getLowerRightCorner(int &xPos, int &yPos) const
{
if (!m_render)
return false;
RenderObject *o = m_render;
xPos = yPos = 0;
if (!o->isInline() || o->isReplaced())
{
o->absolutePosition( xPos, yPos );
xPos += o->width();
yPos += o->height() + o->borderTopExtra() + o->borderBottomExtra();
return true;
}
// find the last text/image child, to get a position
while(o) {
if(o->lastChild())
o = o->lastChild();
else if(o->previousSibling())
o = o->previousSibling();
else {
RenderObject *prev = 0;
while(!prev) {
o = o->parent();
if(!o) return false;
prev = o->previousSibling();
}
o = prev;
}
if((o->isText() && !o->isBR()) || o->isReplaced()) {
o->container()->absolutePosition(xPos, yPos);
if (o->isText()) {
xPos += o->inlineXPos() + o->width();
yPos += o->inlineYPos() + o->height();
} else {
xPos += o->xPos() + o->width();
yPos += o->yPos() + o->height();
}
return true;
}
}
return true;
}
void NodeBaseImpl::setFocus(bool received)
{
if (m_focused == received) return;
NodeImpl::setFocus(received);
// note that we need to recalc the style
setChanged(); // *:focus is a default style, so we just assume personal dependency
if (isElementNode()) {
getDocument()->dynamicDomRestyler().restyleDepedent(static_cast<ElementImpl*>(this), OtherStateDependency);
}
}
void NodeBaseImpl::setActive(bool down)
{
if (down == active()) return;
NodeImpl::setActive(down);
// note that we need to recalc the style
if (isElementNode())
getDocument()->dynamicDomRestyler().restyleDepedent(static_cast<ElementImpl*>(this), ActiveDependency);
}
void NodeBaseImpl::setHovered(bool hover)
{
if (hover == hovered()) return;
NodeImpl::setHovered(hover);
// note that we need to recalc the style
if (isElementNode())
getDocument()->dynamicDomRestyler().restyleDepedent(static_cast<ElementImpl*>(this), HoverDependency);
}
unsigned long NodeBaseImpl::childNodeCount()
{
unsigned long count = 0;
NodeImpl *n;
for (n = firstChild(); n; n = n->nextSibling())
count++;
return count;
}
NodeImpl *NodeBaseImpl::childNode(unsigned long index)
{
unsigned long i;
NodeImpl *n = firstChild();
for (i = 0; n && i < index; i++)
n = n->nextSibling();
return n;
}
void NodeBaseImpl::dispatchChildInsertedEvents( NodeImpl *child, int &exceptioncode )
{
if (getDocument()->hasListenerType(DocumentImpl::DOMNODEINSERTED_LISTENER)) {
MutationEventImpl* const evt = new MutationEventImpl(EventImpl::DOMNODEINSERTED_EVENT,true,false,this,DOMString(),DOMString(),DOMString(),0);
evt->ref();
child->dispatchEvent(evt,exceptioncode,true);
evt->deref();
if (exceptioncode)
return;
}
// dispatch the DOMNodeInsertedIntoDocument event to all descendants
bool hasInsertedListeners = getDocument()->hasListenerType(DocumentImpl::DOMNODEINSERTEDINTODOCUMENT_LISTENER);
NodeImpl *p = this;
while (p->parentNode())
p = p->parentNode();
if (p->nodeType() == Node::DOCUMENT_NODE) {
for (NodeImpl *c = child; c; c = c->traverseNextNode(child)) {
c->insertedIntoDocument();
if (hasInsertedListeners) {
MutationEventImpl* const evt = new MutationEventImpl(EventImpl::DOMNODEINSERTEDINTODOCUMENT_EVENT,false,false,0,DOMString(),DOMString(),DOMString(),0);
evt->ref();
c->dispatchEvent(evt,exceptioncode,true);
evt->deref();
if (exceptioncode)
return;
}
}
}
}
void NodeBaseImpl::dispatchChildRemovalEvents( NodeImpl *child, int &exceptioncode )
{
// Dispatch pre-removal mutation events
getDocument()->notifyBeforeNodeRemoval(child); // ### use events instead
if (getDocument()->hasListenerType(DocumentImpl::DOMNODEREMOVED_LISTENER)) {
MutationEventImpl* const evt = new MutationEventImpl(EventImpl::DOMNODEREMOVED_EVENT,true,false,this,DOMString(),DOMString(),DOMString(),0);
evt->ref();
child->dispatchEvent(evt,exceptioncode,true);
evt->deref();
if (exceptioncode)
return;
}
bool hasRemovalListeners = getDocument()->hasListenerType(DocumentImpl::DOMNODEREMOVEDFROMDOCUMENT_LISTENER);
// dispatch the DOMNodeRemovedFromDocument event to all descendants
NodeImpl *p = this;
while (p->parentNode())
p = p->parentNode();
if (p->nodeType() == Node::DOCUMENT_NODE) {
for (NodeImpl *c = child; c; c = c->traverseNextNode(child)) {
if (hasRemovalListeners) {
MutationEventImpl* const evt = new MutationEventImpl(EventImpl::DOMNODEREMOVEDFROMDOCUMENT_EVENT,false,false,0,DOMString(),DOMString(),DOMString(),0);
evt->ref();
c->dispatchEvent(evt,exceptioncode,true);
evt->deref();
if (exceptioncode)
return;
}
}
}
}
void NodeBaseImpl::setTextContent( const DOMString &text, int& exceptioncode )
{
// NO_MODIFICATION_ALLOWED_ERR: Raised if this node is readonly.
if (isReadOnly()) {
exceptioncode = DOMException::NO_MODIFICATION_ALLOWED_ERR;
return;
}
removeChildren();
if ( !text.isEmpty() && !text.isNull() ) {
TextImpl *t = new TextImpl( docPtr(), text.implementation() );
appendChild( t, exceptioncode );
}
}
// ---------------------------------------------------------------------------
NodeImpl *NodeListImpl::item( unsigned long index ) const
{
unsigned long requestIndex = index;
m_cache->updateNodeListInfo(m_refNode->getDocument());
NodeImpl* n;
bool usedCache = false;
if (m_cache->current.node) {
//Compute distance from the requested index to the cache node
long cacheDist = QABS(long(index) - long(m_cache->position));
if (cacheDist < (long)index) { //Closer to the cached position
usedCache = true;
if (index >= m_cache->position) { //Go ahead
unsigned long relIndex = index - m_cache->position;
n = recursiveItem(m_refNode, m_cache->current.node, relIndex);
} else { //Go backwards
unsigned long relIndex = m_cache->position - index;
n = recursiveItemBack(m_refNode, m_cache->current.node, relIndex);
}
}
}
if (!usedCache)
n = recursiveItem(m_refNode, m_refNode->firstChild(), index);
//We always update the cache state, to make starting iteration
//where it was left off easy.
m_cache->current.node = n;
m_cache->position = requestIndex;
return n;
}
unsigned long NodeListImpl::length() const
{
m_cache->updateNodeListInfo(m_refNode->getDocument());
if (!m_cache->hasLength) {
m_cache->length = calcLength( m_refNode );
m_cache->hasLength = true;
}
return m_cache->length;
}
unsigned long NodeListImpl::calcLength(NodeImpl *start) const
{
unsigned long len = 0;
for(NodeImpl *n = start->firstChild(); n != 0; n = n->nextSibling()) {
bool recurse = true;
if (nodeMatches(n, recurse))
len++;
if (recurse)
len+= NodeListImpl::calcLength(n);
}
return len;
}
NodeListImpl::NodeListImpl( NodeImpl *n, int type, CacheFactory* factory )
{
m_refNode = n;
m_refNode->ref();
m_cache = m_refNode->getDocument()->acquireCachedNodeListInfo(
factory ? factory : Cache::make,
n, type );
}
NodeListImpl::~NodeListImpl()
{
m_refNode->getDocument()->releaseCachedNodeListInfo(m_cache);
m_refNode->deref();
}
/**
Next item in the pre-order walk of tree from node, but not going outside
absStart
*/
static NodeImpl* helperNext(NodeImpl* node, NodeImpl* absStart)
{
//Walk up until we wind a sibling to go to.
while (!node->nextSibling() && node != absStart)
node = node->parentNode();
if (node != absStart)
return node->nextSibling();
else
return 0;
}
NodeImpl *NodeListImpl::recursiveItem ( NodeImpl* absStart, NodeImpl *start, unsigned long &offset ) const
{
for(NodeImpl *n = start; n != 0; n = helperNext(n, absStart)) {
bool recurse = true;
if (nodeMatches(n, recurse))
if (!offset--)
return n;
NodeImpl *depthSearch = recurse ? recursiveItem(n, n->firstChild(), offset) : 0;
if (depthSearch)
return depthSearch;
}
return 0; // no matching node in this subtree
}
NodeImpl *NodeListImpl::recursiveItemBack ( NodeImpl* absStart, NodeImpl *start, unsigned long &offset ) const
{
//### it might be cleaner/faster to split nodeMatches and recursion
//filtering.
bool dummy = true;
NodeImpl* n = start;
do {
bool recurse = true;
//Check whether the current node matches.
if (nodeMatches(n, dummy))
if (!offset--)
return n;
if (n->previousSibling()) {
//Move to the last node of this whole subtree that we should recurse into
n = n->previousSibling();
recurse = true;
while (n->lastChild()) {
(void)nodeMatches(n, recurse);
if (!recurse)
break; //Don't go there
n = n->lastChild();
}
} else {
//We're done with this whole subtree, so move up
n = n->parentNode();
}
}
while (n && n != absStart);
return 0;
}
NodeListImpl::Cache::~Cache()
{}
void NodeListImpl::Cache::clear(DocumentImpl* doc)
{
hasLength = false;
current.node = 0;
version = doc->domTreeVersion();
}
void NodeListImpl::Cache::updateNodeListInfo(DocumentImpl* doc)
{
//If version doesn't match, clear
if (doc->domTreeVersion() != version)
clear(doc);
}
ChildNodeListImpl::ChildNodeListImpl( NodeImpl *n ): NodeListImpl(n, CHILD_NODES)
{}
bool ChildNodeListImpl::nodeMatches( NodeImpl* /*testNode*/, bool& doRecurse ) const
{
doRecurse = false;
return true;
}
TagNodeListImpl::TagNodeListImpl( NodeImpl *n, NodeImpl::Id id )
: NodeListImpl(n, UNCACHEABLE),
m_id(id),
m_namespaceAware(false)
{
// An id of 0 here means "*" (match all nodes)
m_matchAllNames = (id == 0);
m_matchAllNamespaces = false;
}
TagNodeListImpl::TagNodeListImpl( NodeImpl *n, const DOMString &namespaceURI, const DOMString &localName )
: NodeListImpl(n, UNCACHEABLE),
m_id(0),
m_namespaceURI(namespaceURI),
m_localName(localName),
m_namespaceAware(true)
{
m_matchAllNames = (localName == "*");
m_matchAllNamespaces = (namespaceURI == "*");
}
bool TagNodeListImpl::nodeMatches( NodeImpl *testNode, bool& /*doRecurse*/ ) const
{
if ( testNode->nodeType() != Node::ELEMENT_NODE ) return false;
if (m_namespaceAware)
return (m_matchAllNamespaces || testNode->namespaceURI() == m_namespaceURI) &&
(m_matchAllNames || testNode->localName() == m_localName);
else {
NodeImpl::Id testId = testNode->id();
//we have to strip the namespaces if we compare in a namespace unaware fashion
if ( !m_namespaceAware ) testId = localNamePart(testId);
return (m_id == 0 || m_id == testId);
}
}
NameNodeListImpl::NameNodeListImpl(NodeImpl *n, const DOMString &t )
: NodeListImpl(n, UNCACHEABLE),
nodeName(t)
{}
bool NameNodeListImpl::nodeMatches( NodeImpl *testNode, bool& /*doRecurse*/ ) const
{
if ( testNode->nodeType() != Node::ELEMENT_NODE ) return false;
return static_cast<ElementImpl *>(testNode)->getAttribute(ATTR_NAME) == nodeName;
}
// ---------------------------------------------------------------------------
NamedNodeMapImpl::NamedNodeMapImpl()
{
}
NamedNodeMapImpl::~NamedNodeMapImpl()
{
}
// ----------------------------------------------------------------------------
GenericRONamedNodeMapImpl::GenericRONamedNodeMapImpl(DocumentImpl* doc)
: NamedNodeMapImpl()
{
m_doc = doc;
m_contents = new TQPtrList<NodeImpl>;
}
GenericRONamedNodeMapImpl::~GenericRONamedNodeMapImpl()
{
while (!m_contents->isEmpty())
m_contents->take(0)->deref();
delete m_contents;
}
NodeImpl *GenericRONamedNodeMapImpl::getNamedItem ( NodeImpl::Id id, bool /*nsAware*/, DOMStringImpl* /*qName*/ ) const
{
// ## do we need namespace support in this class?
TQPtrListIterator<NodeImpl> it(*m_contents);
for (; it.current(); ++it)
if (it.current()->id() == id)
return it.current();
return 0;
}
Node GenericRONamedNodeMapImpl::setNamedItem ( NodeImpl* /*arg*/, bool /*nsAware*/, DOMStringImpl* /*qName*/, int &exceptioncode )
{
// can't modify this list through standard DOM functions
// NO_MODIFICATION_ALLOWED_ERR: Raised if this map is readonly
exceptioncode = DOMException::NO_MODIFICATION_ALLOWED_ERR;
return 0;
}
Node GenericRONamedNodeMapImpl::removeNamedItem ( NodeImpl::Id /*id*/, bool /*nsAware*/, DOMStringImpl* /*qName*/, int &exceptioncode )
{
// can't modify this list through standard DOM functions
// NO_MODIFICATION_ALLOWED_ERR: Raised if this map is readonly
exceptioncode = DOMException::NO_MODIFICATION_ALLOWED_ERR;
return 0;
}
NodeImpl *GenericRONamedNodeMapImpl::item ( unsigned long index ) const
{
if (index >= m_contents->count())
return 0;
return m_contents->tqat(index);
}
unsigned long GenericRONamedNodeMapImpl::length( ) const
{
return m_contents->count();
}
void GenericRONamedNodeMapImpl::addNode(NodeImpl *n)
{
// The spec says that in the case of duplicates we only keep the first one
if (getNamedItem(n->id(), false, 0))
return;
n->ref();
m_contents->append(n);
}
NodeImpl::Id GenericRONamedNodeMapImpl::mapId(DOMStringImpl* namespaceURI,
DOMStringImpl* localName, bool readonly)
{
if (!m_doc)
return 0;
return m_doc->getId(NodeImpl::ElementId,
namespaceURI, 0, localName, readonly,
false /*don't lookupHTML*/);
}
// -----------------------------------------------------------------------------
void RegisteredListenerList::addEventListener(int id, EventListener *listener, const bool useCapture)
{
RegisteredEventListener rl(static_cast<EventImpl::EventId>(id),listener,useCapture);
if (!listeners)
listeners = new TQValueList<RegisteredEventListener>;
// if this id/listener/useCapture combination is already registered, do nothing.
// the DOM2 spec says that "duplicate instances are discarded", and this keeps
// the listener order intact.
TQValueList<RegisteredEventListener>::iterator it;
for (it = listeners->begin(); it != listeners->end(); ++it)
if (*it == rl)
return;
listeners->append(rl);
}
void RegisteredListenerList::removeEventListener(int id, EventListener *listener, bool useCapture)
{
if (!listeners) // nothing to remove
return;
RegisteredEventListener rl(static_cast<EventImpl::EventId>(id),listener,useCapture);
TQValueList<RegisteredEventListener>::iterator it;
for (it = listeners->begin(); it != listeners->end(); ++it)
if (*it == rl) {
listeners->remove(it);
return;
}
}
bool RegisteredListenerList::isHTMLEventListener(EventListener* listener)
{
return (listener->eventListenerType() == "_khtml_HTMLEventListener");
}
void RegisteredListenerList::setHTMLEventListener(int id, EventListener *listener)
{
if (!listeners)
listeners = new TQValueList<RegisteredEventListener>;
TQValueList<RegisteredEventListener>::iterator it;
if (!listener) {
for (it = listeners->begin(); it != listeners->end(); ++it) {
if ((*it).id == id && isHTMLEventListener((*it).listener)) {
listeners->remove(it);
break;
}
}
return;
}
// if this event already has a registered handler, insert the new one in
// place of the old one, to preserve the order.
RegisteredEventListener rl(static_cast<EventImpl::EventId>(id),listener,false);
int i;
for (i = 0, it = listeners->begin(); it != listeners->end(); ++it, ++i)
if ((*it).id == id && isHTMLEventListener((*it).listener)) {
listeners->insert(it, rl);
listeners->remove(it);
return;
}
listeners->append(rl);
}
EventListener *RegisteredListenerList::getHTMLEventListener(int id)
{
if (!listeners)
return 0;
TQValueList<RegisteredEventListener>::iterator it;
for (it = listeners->begin(); it != listeners->end(); ++it)
if ((*it).id == id && isHTMLEventListener((*it).listener)) {
return (*it).listener;
}
return 0;
}
bool RegisteredListenerList::hasEventListener(int id)
{
if (!listeners)
return false;
TQValueList<RegisteredEventListener>::iterator it;
for (it = listeners->begin(); it != listeners->end(); ++it)
if ((*it).id == id)
return true;
return false;
}
void RegisteredListenerList::clear()
{
delete listeners;
listeners = 0;
}
bool RegisteredListenerList::stillContainsListener(const RegisteredEventListener& listener)
{
if (!listeners)
return false;
return listeners->find(listener) != listeners->end();
}
RegisteredListenerList::~RegisteredListenerList() {
delete listeners; listeners = 0;
}
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