kjs_dom.cpp

konqueror3 embedded版本, KDE环境下的当家浏览器的嵌入式版本源码包.

// -*- c-basic-offset: 2 -*-
/*
 *  This file is part of the KDE libraries
 *  Copyright (C) 2000 Harri Porten ([e-mail])
 *  Copyright (C) 2003 Apple Computer, Inc.
 *
 *  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; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 */

#include <khtmlview.h>
#include "xml/dom2_eventsimpl.h"
#include "rendering/render_canvas.h"
#include "rendering/render_layer.h"
#include "xml/dom_nodeimpl.h"
#include "xml/dom_docimpl.h"
#include "misc/htmltags.h" // ID_*
#include "misc/htmlattrs.h" // ATTR_*
#include "html/html_baseimpl.h"
#include <kdebug.h>
#include <khtml_part.h>

#include "kjs_dom.h"
#include "kjs_html.h"
#include "kjs_css.h"
#include "kjs_range.h"
#include "kjs_traversal.h"
#include "kjs_events.h"
#include "kjs_views.h"
#include "kjs_window.h"
#include "dom/dom_exception.h"
#include "kjs_dom.lut.h"
#include "khtmlpart_p.h"

using namespace KJS;

// -------------------------------------------------------------------------
/* Source for DOMNodeProtoTable.
@begin DOMNodeProtoTable 13
  insertBefore	DOMNode::InsertBefore	DontDelete|Function 2
  replaceChild	DOMNode::ReplaceChild	DontDelete|Function 2
  removeChild	DOMNode::RemoveChild	DontDelete|Function 1
  appendChild	DOMNode::AppendChild	DontDelete|Function 1
  hasAttributes	DOMNode::HasAttributes	DontDelete|Function 0
  hasChildNodes	DOMNode::HasChildNodes	DontDelete|Function 0
  cloneNode	DOMNode::CloneNode	DontDelete|Function 1
# DOM2
  normalize	DOMNode::Normalize	DontDelete|Function 0
  isSupported   DOMNode::IsSupported	DontDelete|Function 2
# from the EventTarget interface
  addEventListener	DOMNode::AddEventListener	DontDelete|Function 3
  removeEventListener	DOMNode::RemoveEventListener	DontDelete|Function 3
  dispatchEvent		DOMNode::DispatchEvent	DontDelete|Function 1
# IE extensions
  contains	DOMNode::Contains		DontDelete|Function 1
  insertAdjacentHTML	DOMNode::InsertAdjacentHTML	DontDelete|Function 2
# "DOM level 0" (from Gecko DOM reference; also in WinIE)
  item          DOMNode::Item           DontDelete|Function 1
@end
*/
DEFINE_PROTOTYPE("DOMNode",DOMNodeProto)
IMPLEMENT_PROTOFUNC_DOM(DOMNodeProtoFunc)
IMPLEMENT_PROTOTYPE(DOMNodeProto,DOMNodeProtoFunc)

const ClassInfo DOMNode::info = { "Node", 0, &DOMNodeTable, 0 };

DOMNode::DOMNode(ExecState *exec, const DOM::Node& n)
  : DOMObject(DOMNodeProto::self(exec)), node(n)
{
}

DOMNode::DOMNode(const Object& proto, const DOM::Node& n)
  : DOMObject(proto), node(n)
{
}

DOMNode::~DOMNode()
{
  ScriptInterpreter::forgetDOMObject(node.handle());
}

bool DOMNode::toBoolean(ExecState *) const
{
    return !node.isNull();
}

/* Source for DOMNodeTable.
@begin DOMNodeTable 53
  nodeName	DOMNode::NodeName	DontDelete|ReadOnly
  nodeValue	DOMNode::NodeValue	DontDelete
  nodeType	DOMNode::NodeType	DontDelete|ReadOnly
  parentNode	DOMNode::ParentNode	DontDelete|ReadOnly
  parentElement	DOMNode::ParentElement	DontDelete|ReadOnly
  childNodes	DOMNode::ChildNodes	DontDelete|ReadOnly
  firstChild	DOMNode::FirstChild	DontDelete|ReadOnly
  lastChild	DOMNode::LastChild	DontDelete|ReadOnly
  previousSibling  DOMNode::PreviousSibling DontDelete|ReadOnly
  nextSibling	DOMNode::NextSibling	DontDelete|ReadOnly
  attributes	DOMNode::Attributes	DontDelete|ReadOnly
  namespaceURI	DOMNode::NamespaceURI	DontDelete|ReadOnly
# DOM2
  prefix	DOMNode::Prefix		DontDelete
  localName	DOMNode::LocalName	DontDelete|ReadOnly
  ownerDocument	DOMNode::OwnerDocument	DontDelete|ReadOnly
# Event handlers
# IE also has: onactivate, onbefore*, oncontextmenu, oncontrolselect, oncut,
# ondeactivate, ondrag*, ondrop, onfocusin, onfocusout, onhelp, onmousewheel,
# onmove*, onpaste, onpropertychange, onreadystatechange, onresizeend/start,
# onselectionchange, onstop
  onabort	DOMNode::OnAbort		DontDelete
  onblur	DOMNode::OnBlur			DontDelete
  onchange	DOMNode::OnChange		DontDelete
  onclick	DOMNode::OnClick		DontDelete
  ondblclick	DOMNode::OnDblClick		DontDelete
  ondragdrop	DOMNode::OnDragDrop		DontDelete
  onerror	DOMNode::OnError		DontDelete
  onfocus	DOMNode::OnFocus       		DontDelete
  onkeydown	DOMNode::OnKeyDown		DontDelete
  onkeypress	DOMNode::OnKeyPress		DontDelete
  onkeyup	DOMNode::OnKeyUp		DontDelete
  onload	DOMNode::OnLoad			DontDelete
  onmousedown	DOMNode::OnMouseDown		DontDelete
  onmousemove	DOMNode::OnMouseMove		DontDelete
  onmouseout	DOMNode::OnMouseOut		DontDelete
  onmouseover	DOMNode::OnMouseOver		DontDelete
  onmouseup	DOMNode::OnMouseUp		DontDelete
  onmove	DOMNode::OnMove			DontDelete
  onreset	DOMNode::OnReset		DontDelete
  onresize	DOMNode::OnResize		DontDelete
  onselect	DOMNode::OnSelect		DontDelete
  onsubmit	DOMNode::OnSubmit		DontDelete
  onunload	DOMNode::OnUnload		DontDelete
# IE extensions
  offsetLeft	DOMNode::OffsetLeft		DontDelete|ReadOnly
  offsetTop	DOMNode::OffsetTop		DontDelete|ReadOnly
  offsetWidth	DOMNode::OffsetWidth		DontDelete|ReadOnly
  offsetHeight	DOMNode::OffsetHeight		DontDelete|ReadOnly
  offsetParent	DOMNode::OffsetParent		DontDelete|ReadOnly
  clientWidth	DOMNode::ClientWidth		DontDelete|ReadOnly
  clientHeight	DOMNode::ClientHeight		DontDelete|ReadOnly
  scrollLeft	DOMNode::ScrollLeft		DontDelete
  scrollTop	DOMNode::ScrollTop		DontDelete
  scrollWidth   DOMNode::ScrollWidth            DontDelete|ReadOnly
  scrollHeight  DOMNode::ScrollHeight           DontDelete|ReadOnly
  sourceIndex	DOMNode::SourceIndex		DontDelete|ReadOnly
@end
*/
Value DOMNode::tryGet(ExecState *exec, const Identifier &propertyName) const
{
#ifdef KJS_VERBOSE
  kdDebug(6070) << "DOMNode::tryGet " << propertyName.qstring() << endl;
#endif
  return DOMObjectLookupGetValue<DOMNode, DOMObject>(exec, propertyName, &DOMNodeTable, this);
}

Value DOMNode::getValueProperty(ExecState *exec, int token) const
{
  switch (token) {
  case NodeName:
    return String(node.nodeName());
  case NodeValue:
    return getString(node.nodeValue()); // initially null, per domts/level1/core/hc_documentcreateelement.html
  case NodeType:
    return Number((unsigned int)node.nodeType());
  case ParentNode:
    return getDOMNode(exec,node.parentNode());
  case ParentElement: // IE only apparently
    return getDOMNode(exec,node.parentNode());
  case ChildNodes:
    return getDOMNodeList(exec,node.childNodes());
  case FirstChild:
    return getDOMNode(exec,node.firstChild());
  case LastChild:
    return getDOMNode(exec,node.lastChild());
  case PreviousSibling:
    return getDOMNode(exec,node.previousSibling());
  case NextSibling:
    return getDOMNode(exec,node.nextSibling());
  case Attributes:
    return getDOMNamedNodeMap(exec,node.attributes());
  case NamespaceURI:
    return getString(node.namespaceURI()); // Moz returns null if not set (dom/namespaces.html)
  case Prefix:
    return getString(node.prefix());  // Moz returns null if not set (dom/namespaces.html)
  case LocalName:
    return getString(node.localName());  // Moz returns null if not set (dom/namespaces.html)
  case OwnerDocument:
    return getDOMNode(exec,node.ownerDocument());
  case OnAbort:
    return getListener(DOM::EventImpl::ABORT_EVENT);
  case OnBlur:
    return getListener(DOM::EventImpl::BLUR_EVENT);
  case OnChange:
    return getListener(DOM::EventImpl::CHANGE_EVENT);
  case OnClick:
    return getListener(DOM::EventImpl::KHTML_ECMA_CLICK_EVENT);
  case OnDblClick:
    return getListener(DOM::EventImpl::KHTML_ECMA_DBLCLICK_EVENT);
  case OnDragDrop:
    return getListener(DOM::EventImpl::KHTML_DRAGDROP_EVENT);
  case OnError:
    return getListener(DOM::EventImpl::KHTML_ERROR_EVENT);
  case OnFocus:
    return getListener(DOM::EventImpl::FOCUS_EVENT);
  case OnKeyDown:
    return getListener(DOM::EventImpl::KEYDOWN_EVENT);
  case OnKeyPress:
    return getListener(DOM::EventImpl::KEYPRESS_EVENT);
  case OnKeyUp:
    return getListener(DOM::EventImpl::KEYUP_EVENT);
  case OnLoad:
    return getListener(DOM::EventImpl::LOAD_EVENT);
  case OnMouseDown:
    return getListener(DOM::EventImpl::MOUSEDOWN_EVENT);
  case OnMouseMove:
    return getListener(DOM::EventImpl::MOUSEMOVE_EVENT);
  case OnMouseOut:
    return getListener(DOM::EventImpl::MOUSEOUT_EVENT);
  case OnMouseOver:
    return getListener(DOM::EventImpl::MOUSEOVER_EVENT);
  case OnMouseUp:
    return getListener(DOM::EventImpl::MOUSEUP_EVENT);
  case OnMove:
    return getListener(DOM::EventImpl::KHTML_MOVE_EVENT);
  case OnReset:
    return getListener(DOM::EventImpl::RESET_EVENT);
  case OnResize:
    return getListener(DOM::EventImpl::RESIZE_EVENT);
  case OnSelect:
    return getListener(DOM::EventImpl::SELECT_EVENT);
  case OnSubmit:
    return getListener(DOM::EventImpl::SUBMIT_EVENT);
  case OnUnload:
    return getListener(DOM::EventImpl::UNLOAD_EVENT);
  case SourceIndex: {
    // Retrieves the ordinal position of the object, in source order, as the object
    // appears in the document's all collection
    // i.e. document.all[n.sourceIndex] == n
    DOM::Document doc = node.ownerDocument();
    if (doc.isHTMLDocument()) {
      DOM::HTMLCollection all = static_cast<DOM::HTMLDocument>(doc).all();
      unsigned long i = 0;
      DOM::Node n = all.firstItem();
      for ( ; !n.isNull() && n != node; n = all.nextItem() )
        ++i;
      Q_ASSERT( !n.isNull() ); // node not in document.all !?
      return Number(i);
    }
  }
  default:
    // no DOM standard, found in IE only

    // Make sure our layout is up to date before we allow a query on these attributes.
    DOM::DocumentImpl* docimpl = node.handle()->getDocument();
    if (docimpl) {
      docimpl->updateLayout();
    }

    khtml::RenderObject *rend = node.handle()->renderer();

    switch (token) {
    case OffsetLeft:
      return rend ? static_cast<Value>( Number( rend->offsetLeft() ) ) : Undefined();
    case OffsetTop:
      return rend ? static_cast<Value>(  Number( rend->offsetTop() ) ) : Undefined();
    case OffsetWidth:
      return rend ? static_cast<Value>(  Number( rend->offsetWidth() ) ) : Undefined();
    case OffsetHeight:
      return rend ? static_cast<Value>(  Number( rend->offsetHeight() ) ) : Undefined();
    case OffsetParent:
    {
      khtml::RenderObject* par = rend ? rend->offsetParent() : 0;
      return getDOMNode( exec, par ? par->element() : 0 );
    }
    case ClientWidth:
      return rend ? static_cast<Value>( Number( rend->clientWidth() ) ) : Undefined();
    case ClientHeight:
      return rend ? static_cast<Value>( Number( rend->clientHeight() ) ) : Undefined();
    case ScrollWidth:
      return rend ? static_cast<Value>( Number(rend->scrollWidth()) ) : Undefined();
    case ScrollHeight:
      return rend ? static_cast<Value>( Number(rend->scrollHeight()) ) : Undefined();
    case ScrollLeft:
      if (rend && rend->layer()) {
          if (rend->isRoot() && !rend->style()->hidesOverflow())
              return Number( node.ownerDocument().view() ? node.ownerDocument().view()->contentsX() : 0);
          return Number( rend->layer()->scrollXOffset() );
      }
      return Number( 0 );
    case ScrollTop:
      if (rend && rend->layer()) {
          if (rend->isRoot() && !rend->style()->hidesOverflow())
              return Number( node.ownerDocument().view() ? node.ownerDocument().view()->contentsY() : 0);
          return Number( rend->layer()->scrollYOffset() );
      }
      return Number( 0 );
    default:
      kdDebug(6070) << "WARNING: Unhandled token in DOMNode::getValueProperty : " << token << endl;
      break;
    }
  }
  return Undefined();
}


void DOMNode::tryPut(ExecState *exec, const Identifier& propertyName, const Value& value, int attr)
{
#ifdef KJS_VERBOSE
  kdDebug(6070) << "DOMNode::tryPut " << propertyName.qstring() << endl;
#endif
  DOMObjectLookupPut<DOMNode,DOMObject>(exec, propertyName, value, attr,
                                        &DOMNodeTable, this );
}

void DOMNode::putValueProperty(ExecState *exec, int token, const Value& value, int /*attr*/)
{
  switch (token) {
  case NodeValue:
    node.setNodeValue(value.toString(exec).string());
    break;
  case Prefix:
    node.setPrefix(value.toString(exec).string());
    break;
  case OnAbort:
    setListener(exec,DOM::EventImpl::ABORT_EVENT,value);
    break;
  case OnBlur:
    setListener(exec,DOM::EventImpl::BLUR_EVENT,value);
    break;