// -*- c-basic-offset: 2 -*-
/*
 *  This file is part of the KDE libraries
 *  Copyright (C) 1999-2003 Harri Porten (porten@kde.org)
 *  Copyright (C) 2001-2003 David Faure (faure@kde.org)
 *
 *  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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#include "kjs_binding.h"
#include "kjs_dom.h"

#include "dom/dom_exception.h"
#include "dom/dom2_range.h"
#include "xml/dom2_eventsimpl.h"

#include <kdebug.h>

#include <assert.h>

using namespace KJS;

/* TODO:
 * The catch all (...) clauses below shouldn't be necessary.
 * But they helped to view for example www.faz.net in an stable manner.
 * Those unknown exceptions should be treated as severe bugs and be fixed.
 *
 * these may be CSS exceptions - need to check - pmk
 */

Value DOMObject::get(ExecState *exec, const UString &p) const
{
  Value result;
  try {
    result = tryGet(exec,p);
  }
  catch (DOM::DOMException e) {
    // ### translate code into readable string ?
    // ### oh, and s/QString/i18n or I18N_NOOP (the code in kjs uses I18N_NOOP... but where is it translated ?)
    //     and where does it appear to the user ?
    Object err = Error::create(exec, GeneralError, QString("DOM exception %1").arg(e.code).local8Bit());
    exec->setException( err );
    result = Undefined();
  }
  catch (...) {
    kdError(6070) << "Unknown exception in DOMObject::get()" << endl;
    result = String("Unknown exception");
  }

  return result;
}

void DOMObject::put(ExecState *exec, const UString &propertyName,
                    const Value &value, int attr)
{
  try {
    tryPut(exec, propertyName, value, attr);
  }
  catch (DOM::DOMException e) {
    Object err = Error::create(exec, GeneralError, QString("DOM exception %1").arg(e.code).local8Bit());
    exec->setException(err);
  }
  catch (...) {
    kdError(6070) << "Unknown exception in DOMObject::put()" << endl;
  }
}

UString DOMObject::toString(ExecState *) const
{
  return "[object " + className() + "]";
}

Value DOMFunction::get(ExecState *exec, const UString &propertyName) const
{
  Value result;
  try {
    result = tryGet(exec, propertyName);
  }
  catch (DOM::DOMException e) {
    result = Undefined();
    Object err = Error::create(exec, GeneralError, QString("DOM exception %1").arg(e.code).local8Bit());
    exec->setException(err);
  }
  catch (...) {
    kdError(6070) << "Unknown exception in DOMFunction::get()" << endl;
    result = String("Unknown exception");
  }

  return result;
}

Value DOMFunction::call(ExecState *exec, Object &thisObj, const List &args)
{
  Value val;
  try {
    val = tryCall(exec, thisObj, args);
  }
  // pity there's no way to distinguish between these in JS code
  catch (DOM::DOMException e) {
    Object err = Error::create(exec, GeneralError, QString("DOM Exception %1").arg(e.code).local8Bit());
    err.put(exec, "code", Number(e.code));
    exec->setException(err);
  }
  catch (DOM::RangeException e) {
    Object err = Error::create(exec, GeneralError, QString("DOM Range Exception %1").arg(e.code).local8Bit());
    err.put(exec, "code", Number(e.code));
    exec->setException(err);
  }
  catch (DOM::CSSException e) {
    Object err = Error::create(exec, GeneralError, QString("CSS Exception %1").arg(e.code).local8Bit());
    err.put(exec, "code", Number(e.code));
    exec->setException(err);
  }
  catch (DOM::EventException e) {
    Object err = Error::create(exec, GeneralError, QString("DOM Event Exception %1").arg(e.code).local8Bit());
    err.put(exec, "code", Number(e.code));
    exec->setException(err);
  }
  catch (...) {
    kdError(6070) << "Unknown exception in DOMFunction::call()" << endl;
    Object err = Error::create(exec, GeneralError, "Unknown exception");
    exec->setException(err);
  }
  return val;
}

typedef QPtrList<ScriptInterpreter> InterpreterList;
static InterpreterList *interpreterList;

ScriptInterpreter::ScriptInterpreter( const Object &global, KHTMLPart* part )
  : Interpreter( global ), m_part( part ), m_domObjects(1021),
    m_evt( 0L ), m_inlineCode(false), m_timerCallback(false)
{
#ifdef KJS_VERBOSE
  kdDebug(6070) << "ScriptInterpreter::ScriptInterpreter " << this << " for part=" << m_part << endl;
#endif
  if ( !interpreterList )
    interpreterList = new InterpreterList;
  interpreterList->append( this );
}

ScriptInterpreter::~ScriptInterpreter()
{
#ifdef KJS_VERBOSE
  kdDebug(6070) << "ScriptInterpreter::~ScriptInterpreter " << this << " for part=" << m_part << endl;
#endif
  assert( interpreterList && interpreterList->contains( this ) );
  interpreterList->remove( this );
  if ( interpreterList->isEmpty() ) {
    delete interpreterList;
    interpreterList = 0;
  }
}

void ScriptInterpreter::forgetDOMObject( void* objectHandle )
{
  if( !interpreterList ) return;

  QPtrListIterator<ScriptInterpreter> it( *interpreterList );
  while ( it.current() ) {
    (*it)->deleteDOMObject( objectHandle );
    ++it;
  }
}

void ScriptInterpreter::mark()
{
  Interpreter::mark();
#ifdef KJS_VERBOSE
  kdDebug(6070) << "ScriptInterpreter::mark marking " << m_domObjects.count() << " DOM objects" << endl;
#endif
  QPtrDictIterator<DOMObject> it( m_domObjects );
  for( ; it.current(); ++it )
    it.current()->mark();
}

bool ScriptInterpreter::isWindowOpenAllowed() const
{
  if ( m_evt )
  {
    int id = m_evt->handle()->id();
    bool eventOk = ( // mouse events
      id == DOM::EventImpl::CLICK_EVENT ||
      id == DOM::EventImpl::MOUSEUP_EVENT || id == DOM::EventImpl::MOUSEDOWN_EVENT ||
      id == DOM::EventImpl::KHTML_ECMA_CLICK_EVENT || id == DOM::EventImpl::KHTML_ECMA_DBLCLICK_EVENT ||
      // keyboard events
      id == DOM::EventImpl::KHTML_KEYDOWN_EVENT || id == DOM::EventImpl::KHTML_KEYPRESS_EVENT ||
      id == DOM::EventImpl::KHTML_KEYUP_EVENT ||
      // other accepted events
      id == DOM::EventImpl::SELECT_EVENT || id == DOM::EventImpl::CHANGE_EVENT ||
      id == DOM::EventImpl::SUBMIT_EVENT );
    kdDebug(6070) << "Window.open, smart policy: id=" << id << " eventOk=" << eventOk << endl;
    if (eventOk)
      return true;
  } else // no event
  {
    if ( m_inlineCode && !m_timerCallback )
    {
      // This is the <a href="javascript:window.open('...')> case -> we let it through
      return true;
      kdDebug(6070) << "Window.open, smart policy, no event, inline code -> ok" << endl;
    }
    else // This is the <script>window.open(...)</script> case or a timer callback -> block it
      kdDebug(6070) << "Window.open, smart policy, no event, <script> tag -> refused" << endl;
  }
  return false;
}

//////

UString::UString(const QString &d)
{
  unsigned int len = d.length();
  UChar *dat = new UChar[len];
  memcpy(dat, d.unicode(), len * sizeof(UChar));
  rep = UString::Rep::create(dat, len);
}

UString::UString(const DOM::DOMString &d)
{
  if (d.isNull()) {
    attach(&Rep::null);
    return;
  }

  unsigned int len = d.length();
  UChar *dat = new UChar[len];
  memcpy(dat, d.unicode(), len * sizeof(UChar));
  rep = UString::Rep::create(dat, len);
}

DOM::DOMString UString::string() const
{
  return DOM::DOMString((QChar*) data(), size());
}

QString UString::qstring() const
{
  return QString((QChar*) data(), size());
}

QConstString UString::qconststring() const
{
  return QConstString((QChar*) data(), size());
}

DOM::Node KJS::toNode(const Value& val)
{
  Object obj = Object::dynamicCast(val);
  if (obj.isNull() || !obj.inherits(&DOMNode::info))
    return DOM::Node();

  const DOMNode *dobj = static_cast<const DOMNode*>(obj.imp());
  return dobj->toNode();
}

Value KJS::getString(DOM::DOMString s)
{
  if (s.isNull())
    return Null();
  else
    return String(s);
}

QVariant KJS::ValueToVariant(ExecState* exec, const Value &val) {
  QVariant res;
  switch (val.type()) {
  case BooleanType:
    res = QVariant(val.toBoolean(exec), 0);
    break;
  case NumberType:
    res = QVariant(val.toNumber(exec));
    break;
  case StringType:
    res = QVariant(val.toString(exec).qstring());
    break;
  default:
    // everything else will be 'invalid'
    break;
  }
  return res;
}
