# khtml Library API Documentation

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# kjs_binding.cpp

    00001 // -*- c-basic-offset: 2 -*-
    00002 /*
    00003  *  This file is part of the KDE libraries
    00004  *  Copyright (C) 1999-2003 Harri Porten (porten@kde.org)
    00005  *  Copyright (C) 2001-2003 David Faure (faure@kde.org)
    00006  *
    00007  *  This library is free software; you can redistribute it and/or
    00008  *  modify it under the terms of the GNU Library General Public
    00009  *  License as published by the Free Software Foundation; either
    00010  *  version 2 of the License, or (at your option) any later version.
    00011  *
    00012  *  This library is distributed in the hope that it will be useful,
    00013  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
    00014  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    00015  *  Library General Public License for more details.
    00016  *
    00017  *  You should have received a copy of the GNU Library General Public
    00018  *  License along with this library; if not, write to the Free Software
    00019  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
    00020  */
    00021
    00022 #include "kjs_binding.h"
    00023 #include "kjs_dom.h"
    00024
    00025 #include "dom/dom_exception.h"
    00026 #include "dom/dom2_range.h"
    00027 #include "xml/dom2_eventsimpl.h"
    00028
    00029 #include <kdebug.h>
    00030
    00031 #include <assert.h>
    00032
    00033 using namespace KJS;
    00034
    00035 /* TODO:
    00036  * The catch all (...) clauses below shouldn't be necessary.
    00037  * But they helped to view for example www.faz.net in an stable manner.
    00038  * Those unknown exceptions should be treated as severe bugs and be fixed.
    00039  *
    00040  * these may be CSS exceptions - need to check - pmk
    00041  */
    00042
    00043 Value DOMObject::get(ExecState *exec, const UString &p) const
    00044 {
    00045   Value result;
    00046   try {
    00047     result = tryGet(exec,p);
    00048   }
    00049   catch (DOM::DOMException e) {
    00050     // ### translate code into readable string ?
    00051     // ### oh, and s/QString/i18n or I18N_NOOP (the code in kjs uses I18N_NOOP... but where is it translated ?)
    00052     //     and where does it appear to the user ?
    00053     Object err = Error::create(exec, GeneralError, QString("DOM exception %1").arg(e.code).local8Bit());
    00054     exec->setException( err );
    00055     result = Undefined();
    00056   }
    00057   catch (...) {
    00058     kdError(6070) << "Unknown exception in DOMObject::get()" << endl;
    00059     result = String("Unknown exception");
    00060   }
    00061
    00062   return result;
    00063 }
    00064
    00065 void DOMObject::put(ExecState *exec, const UString &propertyName,
    00066                     const Value &value, int attr)
    00067 {
    00068   try {
    00069     tryPut(exec, propertyName, value, attr);
    00070   }
    00071   catch (DOM::DOMException e) {
    00072     Object err = Error::create(exec, GeneralError, QString("DOM exception %1").arg(e.code).local8Bit());
    00073     exec->setException(err);
    00074   }
    00075   catch (...) {
    00076     kdError(6070) << "Unknown exception in DOMObject::put()" << endl;
    00077   }
    00078 }
    00079
    00080 UString DOMObject::toString(ExecState *) const
    00081 {
    00082   return "[object " + className() + "]";
    00083 }
    00084
    00085 Value DOMFunction::get(ExecState *exec, const UString &propertyName) const
    00086 {
    00087   Value result;
    00088   try {
    00089     result = tryGet(exec, propertyName);
    00090   }
    00091   catch (DOM::DOMException e) {
    00092     result = Undefined();
    00093     Object err = Error::create(exec, GeneralError, QString("DOM exception %1").arg(e.code).local8Bit());
    00094     exec->setException(err);
    00095   }
    00096   catch (...) {
    00097     kdError(6070) << "Unknown exception in DOMFunction::get()" << endl;
    00098     result = String("Unknown exception");
    00099   }
    00100
    00101   return result;
    00102 }
    00103
    00104 Value DOMFunction::call(ExecState *exec, Object &thisObj, const List &args)
    00105 {
    00106   Value val;
    00107   try {
    00108     val = tryCall(exec, thisObj, args);
    00109   }
    00110   // pity there's no way to distinguish between these in JS code
    00111   catch (DOM::DOMException e) {
    00112     Object err = Error::create(exec, GeneralError, QString("DOM Exception %1").arg(e.code).local8Bit());
    00113     err.put(exec, "code", Number(e.code));
    00114     exec->setException(err);
    00115   }
    00116   catch (DOM::RangeException e) {
    00117     Object err = Error::create(exec, GeneralError, QString("DOM Range Exception %1").arg(e.code).local8Bit());
    00118     err.put(exec, "code", Number(e.code));
    00119     exec->setException(err);
    00120   }
    00121   catch (DOM::CSSException e) {
    00122     Object err = Error::create(exec, GeneralError, QString("CSS Exception %1").arg(e.code).local8Bit());
    00123     err.put(exec, "code", Number(e.code));
    00124     exec->setException(err);
    00125   }
    00126   catch (DOM::EventException e) {
    00127     Object err = Error::create(exec, GeneralError, QString("DOM Event Exception %1").arg(e.code).local8Bit());
    00128     err.put(exec, "code", Number(e.code));
    00129     exec->setException(err);
    00130   }
    00131   catch (...) {
    00132     kdError(6070) << "Unknown exception in DOMFunction::call()" << endl;
    00133     Object err = Error::create(exec, GeneralError, "Unknown exception");
    00134     exec->setException(err);
    00135   }
    00136   return val;
    00137 }
    00138
    00139 typedef QPtrList<ScriptInterpreter> InterpreterList;
    00140 static InterpreterList *interpreterList;
    00141
    00142 ScriptInterpreter::ScriptInterpreter( const Object &global, KHTMLPart* part )
    00143   : Interpreter( global ), m_part( part ), m_domObjects(1021),
    00144     m_evt( 0L ), m_inlineCode(false), m_timerCallback(false)
    00145 {
    00146 #ifdef KJS_VERBOSE
    00147   kdDebug(6070) << "ScriptInterpreter::ScriptInterpreter " << this << " for part=" << m_part << endl;
    00148 #endif
    00149   if ( !interpreterList )
    00150     interpreterList = new InterpreterList;
    00151   interpreterList->append( this );
    00152 }
    00153
    00154 ScriptInterpreter::~ScriptInterpreter()
    00155 {
    00156 #ifdef KJS_VERBOSE
    00157   kdDebug(6070) << "ScriptInterpreter::~ScriptInterpreter " << this << " for part=" << m_part << endl;
    00158 #endif
    00159   assert( interpreterList && interpreterList->contains( this ) );
    00160   interpreterList->remove( this );
    00161   if ( interpreterList->isEmpty() ) {
    00162     delete interpreterList;
    00163     interpreterList = 0;
    00164   }
    00165 }
    00166
    00167 void ScriptInterpreter::forgetDOMObject( void* objectHandle )
    00168 {
    00169   if( !interpreterList ) return;
    00170
    00171   QPtrListIterator<ScriptInterpreter> it( *interpreterList );
    00172   while ( it.current() ) {
    00173     (*it)->deleteDOMObject( objectHandle );
    00174     ++it;
    00175   }
    00176 }
    00177
    00178 void ScriptInterpreter::mark()
    00179 {
    00180   Interpreter::mark();
    00181 #ifdef KJS_VERBOSE
    00182   kdDebug(6070) << "ScriptInterpreter::mark marking " << m_domObjects.count() << " DOM objects" << endl;
    00183 #endif
    00184   QPtrDictIterator<DOMObject> it( m_domObjects );
    00185   for( ; it.current(); ++it )
    00186     it.current()->mark();
    00187 }
    00188
    00189 bool ScriptInterpreter::isWindowOpenAllowed() const
    00190 {
    00191   if ( m_evt )
    00192   {
    00193     int id = m_evt->handle()->id();
    00194     bool eventOk = ( // mouse events
    00195       id == DOM::EventImpl::CLICK_EVENT ||
    00196       id == DOM::EventImpl::MOUSEUP_EVENT || id == DOM::EventImpl::MOUSEDOWN_EVENT ||
    00197       id == DOM::EventImpl::KHTML_ECMA_CLICK_EVENT || id == DOM::EventImpl::KHTML_ECMA_DBLCLICK_EVENT ||
    00198       // keyboard events
    00199       id == DOM::EventImpl::KHTML_KEYDOWN_EVENT || id == DOM::EventImpl::KHTML_KEYPRESS_EVENT ||
    00200       id == DOM::EventImpl::KHTML_KEYUP_EVENT ||
    00201       // other accepted events
    00202       id == DOM::EventImpl::SELECT_EVENT || id == DOM::EventImpl::CHANGE_EVENT ||
    00203       id == DOM::EventImpl::SUBMIT_EVENT );
    00204     kdDebug(6070) << "Window.open, smart policy: id=" << id << " eventOk=" << eventOk << endl;
    00205     if (eventOk)
    00206       return true;
    00207   } else // no event
    00208   {
    00209     if ( m_inlineCode && !m_timerCallback )
    00210     {
    00211       // This is the <a href="javascript:window.open('...')> case -> we let it through
    00212       return true;
    00213       kdDebug(6070) << "Window.open, smart policy, no event, inline code -> ok" << endl;
    00214     }
    00215     else // This is the <script>window.open(...)</script> case or a timer callback -> block it
    00216       kdDebug(6070) << "Window.open, smart policy, no event, <script> tag -> refused" << endl;
    00217   }
    00218   return false;
    00219 }
    00220
    00222
    00223 UString::UString(const QString &d)
    00224 {
    00225   unsigned int len = d.length();
    00226   UChar *dat = new UChar[len];
    00227   memcpy(dat, d.unicode(), len * sizeof(UChar));
    00228   rep = UString::Rep::create(dat, len);
    00229 }
    00230
    00231 UString::UString(const DOM::DOMString &d)
    00232 {
    00233   if (d.isNull()) {
    00234     attach(&Rep::null);
    00235     return;
    00236   }
    00237
    00238   unsigned int len = d.length();
    00239   UChar *dat = new UChar[len];
    00240   memcpy(dat, d.unicode(), len * sizeof(UChar));
    00241   rep = UString::Rep::create(dat, len);
    00242 }
    00243
    00244 DOM::DOMString UString::string() const
    00245 {
    00246   return DOM::DOMString((QChar*) data(), size());
    00247 }
    00248
    00249 QString UString::qstring() const
    00250 {
    00251   return QString((QChar*) data(), size());
    00252 }
    00253
    00254 QConstString UString::qconststring() const
    00255 {
    00256   return QConstString((QChar*) data(), size());
    00257 }
    00258
    00259 DOM::Node KJS::toNode(const Value& val)
    00260 {
    00261   Object obj = Object::dynamicCast(val);
    00262   if (obj.isNull() || !obj.inherits(&DOMNode::info))
    00263     return DOM::Node();
    00264
    00265   const DOMNode *dobj = static_cast<const DOMNode*>(obj.imp());
    00266   return dobj->toNode();
    00267 }
    00268
    00269 Value KJS::getString(DOM::DOMString s)
    00270 {
    00271   if (s.isNull())
    00272     return Null();
    00273   else
    00274     return String(s);
    00275 }
    00276
    00277 QVariant KJS::ValueToVariant(ExecState* exec, const Value &val) {
    00278   QVariant res;
    00279   switch (val.type()) {
    00280   case BooleanType:
    00281     res = QVariant(val.toBoolean(exec), 0);
    00282     break;
    00283   case NumberType:
    00284     res = QVariant(val.toNumber(exec));
    00285     break;
    00286   case StringType:
    00287     res = QVariant(val.toString(exec).qstring());
    00288     break;
    00289   default:
    00290     // everything else will be 'invalid'
    00291     break;
    00292   }
    00293   return res;
    00294 }

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 13:34:11 2004 by doxygen 1.3.4 written by Dimitri van Heesch, © 1997-2001