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# kjs_traversal.cpp

    00001 // -*- c-basic-offset: 2 -*-
    00002 /*
    00003  *  This file is part of the KDE libraries
    00004  *  Copyright (C) 2001 Peter Kelly (pmk@post.com)
    00005  *
    00006  *  This library is free software; you can redistribute it and/or
    00007  *  modify it under the terms of the GNU Library General Public
    00008  *  License as published by the Free Software Foundation; either
    00009  *  version 2 of the License, or (at your option) any later version.
    00010  *
    00011  *  This library is distributed in the hope that it will be useful,
    00012  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
    00013  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    00014  *  Library General Public License for more details.
    00015  *
    00016  *  You should have received a copy of the GNU Library General Public
    00017  *  License along with this library; if not, write to the Free Software
    00018  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
    00019  */
    00020
    00021 #include "kjs_traversal.h"
    00022 #include "kjs_traversal.lut.h"
    00023 #include "kjs_proxy.h"
    00024 #include <dom/dom_node.h>
    00025 #include <xml/dom_nodeimpl.h>
    00026 #include <xml/dom_docimpl.h>
    00027 #include <khtmlview.h>
    00028 #include <kdebug.h>
    00029
    00030 using namespace KJS;
    00031
    00032 // -------------------------------------------------------------------------
    00033
    00034 const ClassInfo DOMNodeIterator::info = { "NodeIterator", 0, &DOMNodeIteratorTable, 0 };
    00035 /*
    00036 @begin DOMNodeIteratorTable 5
    00037   root                          DOMNodeIterator::Root                   DontDelete|ReadOnly
    00038   whatToShow                    DOMNodeIterator::WhatToShow             DontDelete|ReadOnly
    00039   filter                        DOMNodeIterator::Filter                 DontDelete|ReadOnly
    00040   expandEntityReferences        DOMNodeIterator::ExpandEntityReferences DontDelete|ReadOnly
    00041 @end
    00042 @begin DOMNodeIteratorProtoTable 3
    00043   nextNode      DOMNodeIterator::NextNode       DontDelete|Function 0
    00044   previousNode  DOMNodeIterator::PreviousNode   DontDelete|Function 0
    00045   detach        DOMNodeIterator::Detach         DontDelete|Function 0
    00046 @end
    00047 */
    00048 DEFINE_PROTOTYPE("DOMNodeIterator",DOMNodeIteratorProto)
    00049 IMPLEMENT_PROTOFUNC_DOM(DOMNodeIteratorProtoFunc)
    00050 IMPLEMENT_PROTOTYPE(DOMNodeIteratorProto,DOMNodeIteratorProtoFunc)
    00051
    00052 DOMNodeIterator::DOMNodeIterator(ExecState *exec, DOM::NodeIterator ni)
    00053   : DOMObject(DOMNodeIteratorProto::self(exec)), nodeIterator(ni) {}
    00054
    00055 DOMNodeIterator::~DOMNodeIterator()
    00056 {
    00057   ScriptInterpreter::forgetDOMObject(nodeIterator.handle());
    00058 }
    00059
    00060 Value DOMNodeIterator::tryGet(ExecState *exec, const UString &p) const
    00061 {
    00062   return DOMObjectLookupGetValue<DOMNodeIterator,DOMObject>(exec,p,&DOMNodeIteratorTable,this);
    00063 }
    00064
    00065 Value DOMNodeIterator::getValueProperty(ExecState *exec, int token) const
    00066 {
    00067   DOM::NodeIterator ni(nodeIterator);
    00068   switch (token) {
    00069   case Root:
    00070     return getDOMNode(exec,ni.root());
    00071   case WhatToShow:
    00072     return Number(ni.whatToShow());
    00073   case Filter:
    00074     return getDOMNodeFilter(exec,ni.filter());
    00075   case ExpandEntityReferences:
    00076     return Boolean(ni.expandEntityReferences());
    00077  default:
    00078    kdWarning() << "Unhandled token in DOMNodeIterator::getValueProperty : " << token << endl;
    00079    return Value();
    00080   }
    00081 }
    00082
    00083 Value DOMNodeIteratorProtoFunc::tryCall(ExecState *exec, Object &thisObj, const List &)
    00084 {
    00085   KJS_CHECK_THIS( KJS::DOMNodeIterator, thisObj );
    00086   DOM::NodeIterator nodeIterator = static_cast<DOMNodeIterator *>(thisObj.imp())->toNodeIterator();
    00087   switch (id) {
    00088   case DOMNodeIterator::PreviousNode:
    00089     return getDOMNode(exec,nodeIterator.previousNode());
    00090   case DOMNodeIterator::NextNode:
    00091     return getDOMNode(exec,nodeIterator.nextNode());
    00092   case DOMNodeIterator::Detach:
    00093     nodeIterator.detach();
    00094     return Undefined();
    00095   }
    00096   return Undefined();
    00097 }
    00098
    00099 Value KJS::getDOMNodeIterator(ExecState *exec, DOM::NodeIterator ni)
    00100 {
    00101   return cacheDOMObject<DOM::NodeIterator, DOMNodeIterator>(exec, ni);
    00102 }
    00103
    00104
    00105 // -------------------------------------------------------------------------
    00106
    00107 const ClassInfo NodeFilterConstructor::info = { "NodeFilterConstructor", 0, &NodeFilterConstructorTable, 0 };
    00108 /*
    00109 @begin NodeFilterConstructorTable 17
    00110   FILTER_ACCEPT         DOM::NodeFilter::FILTER_ACCEPT  DontDelete|ReadOnly
    00111   FILTER_REJECT         DOM::NodeFilter::FILTER_REJECT  DontDelete|ReadOnly
    00112   FILTER_SKIP           DOM::NodeFilter::FILTER_SKIP    DontDelete|ReadOnly
    00113   SHOW_ALL              DOM::NodeFilter::SHOW_ALL       DontDelete|ReadOnly
    00114   SHOW_ELEMENT          DOM::NodeFilter::SHOW_ELEMENT   DontDelete|ReadOnly
    00115   SHOW_ATTRIBUTE        DOM::NodeFilter::SHOW_ATTRIBUTE DontDelete|ReadOnly
    00116   SHOW_TEXT             DOM::NodeFilter::SHOW_TEXT      DontDelete|ReadOnly
    00117   SHOW_CDATA_SECTION    DOM::NodeFilter::SHOW_CDATA_SECTION     DontDelete|ReadOnly
    00118   SHOW_ENTITY_REFERENCE DOM::NodeFilter::SHOW_ENTITY_REFERENCE  DontDelete|ReadOnly
    00119   SHOW_ENTITY           DOM::NodeFilter::SHOW_ENTITY    DontDelete|ReadOnly
    00120   SHOW_PROCESSING_INSTRUCTION   DOM::NodeFilter::SHOW_PROCESSING_INSTRUCTION    DontDelete|ReadOnly
    00121   SHOW_COMMENT          DOM::NodeFilter::SHOW_COMMENT   DontDelete|ReadOnly
    00122   SHOW_DOCUMENT         DOM::NodeFilter::SHOW_DOCUMENT  DontDelete|ReadOnly
    00123   SHOW_DOCUMENT_TYPE    DOM::NodeFilter::SHOW_DOCUMENT_TYPE     DontDelete|ReadOnly
    00124   SHOW_DOCUMENT_FRAGMENT        DOM::NodeFilter::SHOW_DOCUMENT_FRAGMENT DontDelete|ReadOnly
    00125   SHOW_NOTATION         DOM::NodeFilter::SHOW_NOTATION  DontDelete|ReadOnly
    00126 @end
    00127 */
    00128
    00129 NodeFilterConstructor::NodeFilterConstructor(ExecState* exec)
    00130   : DOMObject(exec->interpreter()->builtinObjectPrototype())
    00131 {
    00132 }
    00133
    00134 Value NodeFilterConstructor::tryGet(ExecState *exec, const UString &p) const
    00135 {
    00136   return DOMObjectLookupGetValue<NodeFilterConstructor,DOMObject>(exec,p,&NodeFilterConstructorTable,this);
    00137 }
    00138
    00139 Value NodeFilterConstructor::getValueProperty(ExecState *, int token) const
    00140 {
    00141   // We use the token as the value to return directly
    00142   return Number(token);
    00143 }
    00144
    00145 Value KJS::getNodeFilterConstructor(ExecState *exec)
    00146 {
    00147   return cacheGlobalObject<NodeFilterConstructor>(exec, "[[nodeFilter.constructor]]");
    00148 }
    00149
    00150 // -------------------------------------------------------------------------
    00151
    00152 const ClassInfo DOMNodeFilter::info = { "NodeFilter", 0, 0, 0 };
    00153 /*
    00154 @begin DOMNodeFilterProtoTable 1
    00155   acceptNode    DOMNodeFilter::AcceptNode       DontDelete|Function 0
    00156 @end
    00157 */
    00158 DEFINE_PROTOTYPE("DOMNodeFilter",DOMNodeFilterProto)
    00159 IMPLEMENT_PROTOFUNC_DOM(DOMNodeFilterProtoFunc)
    00160 IMPLEMENT_PROTOTYPE(DOMNodeFilterProto,DOMNodeFilterProtoFunc)
    00161
    00162 DOMNodeFilter::DOMNodeFilter(ExecState *exec, DOM::NodeFilter nf)
    00163   : DOMObject(DOMNodeFilterProto::self(exec)), nodeFilter(nf) {}
    00164
    00165 DOMNodeFilter::~DOMNodeFilter()
    00166 {
    00167   ScriptInterpreter::forgetDOMObject(nodeFilter.handle());
    00168 }
    00169
    00170 Value DOMNodeFilterProtoFunc::tryCall(ExecState *exec, Object &thisObj, const List &args)
    00171 {
    00172   KJS_CHECK_THIS( KJS::DOMNodeFilter, thisObj );
    00173   DOM::NodeFilter nodeFilter = static_cast<DOMNodeFilter *>(thisObj.imp())->toNodeFilter();
    00174   switch (id) {
    00175     case DOMNodeFilter::AcceptNode:
    00176       return Number(nodeFilter.acceptNode(toNode(args[0])));
    00177   }
    00178   return Undefined();
    00179 }
    00180
    00181 Value KJS::getDOMNodeFilter(ExecState *exec, DOM::NodeFilter nf)
    00182 {
    00183   return cacheDOMObject<DOM::NodeFilter, DOMNodeFilter>(exec, nf);
    00184 }
    00185
    00186 // -------------------------------------------------------------------------
    00187
    00188 const ClassInfo DOMTreeWalker::info = { "TreeWalker", 0, &DOMTreeWalkerTable, 0 };
    00189 /*
    00190 @begin DOMTreeWalkerTable 5
    00191   root                  DOMTreeWalker::Root             DontDelete|ReadOnly
    00192   whatToShow            DOMTreeWalker::WhatToShow       DontDelete|ReadOnly
    00193   filter                DOMTreeWalker::Filter           DontDelete|ReadOnly
    00194   expandEntityReferences DOMTreeWalker::ExpandEntityReferences  DontDelete|ReadOnly
    00195   currentNode           DOMTreeWalker::CurrentNode      DontDelete
    00196 @end
    00197 @begin DOMTreeWalkerProtoTable 7
    00198   parentNode    DOMTreeWalker::ParentNode       DontDelete|Function 0
    00199   firstChild    DOMTreeWalker::FirstChild       DontDelete|Function 0
    00200   lastChild     DOMTreeWalker::LastChild        DontDelete|Function 0
    00201   previousSibling DOMTreeWalker::PreviousSibling        DontDelete|Function 0
    00202   nextSibling   DOMTreeWalker::NextSibling      DontDelete|Function 0
    00203   previousNode  DOMTreeWalker::PreviousNode     DontDelete|Function 0
    00204   nextNode      DOMTreeWalker::NextNode         DontDelete|Function 0
    00205 @end
    00206 */
    00207 DEFINE_PROTOTYPE("DOMTreeWalker",DOMTreeWalkerProto)
    00208 IMPLEMENT_PROTOFUNC_DOM(DOMTreeWalkerProtoFunc)
    00209 IMPLEMENT_PROTOTYPE(DOMTreeWalkerProto,DOMTreeWalkerProtoFunc)
    00210
    00211 DOMTreeWalker::DOMTreeWalker(ExecState *exec, DOM::TreeWalker tw)
    00212   : DOMObject(DOMTreeWalkerProto::self(exec)), treeWalker(tw) {}
    00213
    00214 DOMTreeWalker::~DOMTreeWalker()
    00215 {
    00216   ScriptInterpreter::forgetDOMObject(treeWalker.handle());
    00217 }
    00218
    00219 Value DOMTreeWalker::tryGet(ExecState *exec, const UString &p) const
    00220 {
    00221   return DOMObjectLookupGetValue<DOMTreeWalker,DOMObject>(exec,p,&DOMTreeWalkerTable,this);
    00222 }
    00223
    00224 Value DOMTreeWalker::getValueProperty(ExecState *exec, int token) const
    00225 {
    00226   DOM::TreeWalker tw(treeWalker);
    00227   switch (token) {
    00228   case Root:
    00229     return getDOMNode(exec,tw.root());
    00230   case WhatToShow:
    00231     return Number(tw.whatToShow());
    00232   case Filter:
    00233     return getDOMNodeFilter(exec,tw.filter());
    00234   case ExpandEntityReferences:
    00235     return Boolean(tw.expandEntityReferences());
    00236   case CurrentNode:
    00237     return getDOMNode(exec,tw.currentNode());
    00238   default:
    00239     kdWarning() << "Unhandled token in DOMTreeWalker::getValueProperty : " << token << endl;
    00240     return Value();
    00241   }
    00242 }
    00243
    00244 void DOMTreeWalker::tryPut(ExecState *exec, const UString &propertyName,
    00245                            const Value& value, int attr)
    00246 {
    00247   if (propertyName == "currentNode") {
    00248     treeWalker.setCurrentNode(toNode(value));
    00249   }
    00250   else
    00251     ObjectImp::put(exec, propertyName, value, attr);
    00252 }
    00253
    00254 Value DOMTreeWalkerProtoFunc::tryCall(ExecState *exec, Object &thisObj, const List &)
    00255 {
    00256   KJS_CHECK_THIS( KJS::DOMTreeWalker, thisObj );
    00257   DOM::TreeWalker treeWalker = static_cast<DOMTreeWalker *>(thisObj.imp())->toTreeWalker();
    00258   switch (id) {
    00259     case DOMTreeWalker::ParentNode:
    00260       return getDOMNode(exec,treeWalker.parentNode());
    00261     case DOMTreeWalker::FirstChild:
    00262       return getDOMNode(exec,treeWalker.firstChild());
    00263     case DOMTreeWalker::LastChild:
    00264       return getDOMNode(exec,treeWalker.lastChild());
    00265     case DOMTreeWalker::PreviousSibling:
    00266       return getDOMNode(exec,treeWalker.previousSibling());
    00267     case DOMTreeWalker::NextSibling:
    00268       return getDOMNode(exec,treeWalker.nextSibling());
    00269     case DOMTreeWalker::PreviousNode:
    00270       return getDOMNode(exec,treeWalker.previousSibling());
    00271     case DOMTreeWalker::NextNode:
    00272       return getDOMNode(exec,treeWalker.nextNode());
    00273   }
    00274   return Undefined();
    00275 }
    00276
    00277 Value KJS::getDOMTreeWalker(ExecState *exec, DOM::TreeWalker tw)
    00278 {
    00279   return cacheDOMObject<DOM::TreeWalker, DOMTreeWalker>(exec, tw);
    00280 }
    00281
    00282 DOM::NodeFilter KJS::toNodeFilter(const Value& val)
    00283 {
    00284   Object obj = Object::dynamicCast(val);
    00285   if (obj.isNull() || !obj.inherits(&DOMNodeFilter::info))
    00286     return DOM::NodeFilter();
    00287
    00288   const DOMNodeFilter *dobj = static_cast<const DOMNodeFilter*>(obj.imp());
    00289   return dobj->toNodeFilter();
    00290 }
    00291
    00292 // -------------------------------------------------------------------------
    00293
    00294 JSNodeFilter::JSNodeFilter(Object & _filter) : DOM::CustomNodeFilter(), filter( _filter )
    00295 {
    00296 }
    00297
    00298 JSNodeFilter::~JSNodeFilter()
    00299 {
    00300 }
    00301
    00302 short JSNodeFilter::acceptNode(const DOM::Node &n)
    00303 {
    00304   KHTMLPart *part = static_cast<DOM::DocumentImpl *>( n.handle()->docPtr()->document() )->view()->part();
    00305   KJSProxy *proxy = KJSProxy::proxy( part );
    00306   if (proxy) {
    00307     ExecState *exec = proxy->interpreter()->globalExec();
    00308     Object acceptNodeFunc = Object::dynamicCast( filter.get(exec, "acceptNode") );
    00309     if (acceptNodeFunc.implementsCall()) {
    00310       List args;
    00311       args.append(getDOMNode(exec,n));
    00312       Value result = acceptNodeFunc.call(exec,filter,args);
    00313       return result.toInteger(exec);
    00314     }
    00315   }
    00316
    00317   return DOM::NodeFilter::FILTER_REJECT;
    00318 }

This file is part of the documentation for kdelibs Version 3.1.5.
Documentation copyright © 1996-2002 the KDE developers.
Generated on Wed Jan 28 13:34:25 2004 by doxygen 1.3.4 written by Dimitri van Heesch, © 1997-2001