/***************************************************************************
 * qtobject.cpp
 * This file is part of the KDE project
 * copyright (C)2004-2005 by Sebastian Sauer (mail@dipe.org)
 *
 * This program 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 program 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 program; see the file COPYING.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 ***************************************************************************/

#include "qtobject.h"
#include "object.h"
#include "variant.h"
#include "event.h"

#include "../main/manager.h"
#include "eventslot.h"
#include "eventsignal.h"

#include <tqobject.h>
#include <tqsignal.h>
//#include <tqglobal.h>
//#include <tqobjectdefs.h>
#include <tqmetaobject.h>
#include <tqucom_p.h> // for the TQt TQUObject API.

using namespace Kross::Api;

QtObject::QtObject(TQObject* object, const TQString& name)
    : Kross::Api::Class<QtObject>(name.isEmpty() ? TQString(object->name()) : name)
    , m_object(object)
{
    // Walk through the signals and slots the TQObject has
    // and attach them as events to this QtObject.

    TQStrList slotnames = m_object->metaObject()->slotNames(false);
    for(char* c = slotnames.first(); c; c = slotnames.next()) {
        TQCString s = c;
        addChild(s, new EventSlot(s, object, s) );
    }

    TQStrList signalnames = m_object->metaObject()->signalNames(false);
    for(char* c = signalnames.first(); c; c = signalnames.next()) {
        TQCString s = c;
        addChild(s, new EventSignal(s, object, s) );
    }

    // Add functions to wrap TQObject methods into callable
    // Kross objects.

    addFunction("propertyNames", &QtObject::propertyNames);
    addFunction("hasProperty", &QtObject::hasProperty);
    addFunction("getProperty", &QtObject::getProperty);
    addFunction("setProperty", &QtObject::setProperty);

    addFunction("slotNames", &QtObject::slotNames);
    addFunction("hasSlot", &QtObject::hasSlot);
    addFunction("slot", &QtObject::callSlot);

    addFunction("signalNames", &QtObject::signalNames);
    addFunction("hasSignal", &QtObject::hasSignal);
    addFunction("signal", &QtObject::emitSignal);

    addFunction("connect", &QtObject::connectSignal);
    addFunction("disconnect", &QtObject::disconnectSignal);
}

QtObject::~QtObject()
{
}

const TQString QtObject::getClassName() const
{
    return "Kross::Api::QtObject";
}

TQObject* QtObject::getObject()
{
    return m_object;
}

TQUObject* QtObject::toTQUObject(const TQString& signature, List::Ptr arguments)
{
    int startpos = signature.find("(");
    int endpos = signature.findRev(")");
    if(startpos < 0 || startpos > endpos)
        throw Exception::Ptr( new Exception(TQString("Invalid TQt signal or slot signature '%1'").arg(signature)) );

    //TQString sig = signature.left(startpos);
    TQString params = signature.mid(startpos + 1, endpos - startpos - 1);
    TQStringList paramlist = TQStringList::split(",", params); // this will fail on something like myslot(TQMap<TQString,TQString> arg), but we don't care jet.
    uint paramcount = paramlist.size();

    // The first item in the TQUObject-array is for the returnvalue
    // while everything >=1 are the passed parameters.
    TQUObject* uo = new TQUObject[ paramcount + 1 ];
    uo[0] = TQUObject(); // empty placeholder for the returnvalue.

//TQString t;
//for(int j=0; j<argcount; j++) t += "'" + Variant::toString(arguments->item(j)) + "' ";
//krossdebug( TQString("1 ---------------------: (%1) %2").arg(argcount).arg(t) );

    // Fill parameters.
    uint argcount = arguments ? arguments->count() : 0;
    for(uint i = 0; i < paramcount; i++) {
        if(paramlist[i].find("TQString") >= 0) {
            const TQString s = (argcount > i) ? Variant::toString(arguments->item(i)) : TQString();
            //krossdebug(TQString("EventSlot::toTQUObject s=%1").arg(s));
            static_QUType_TQString.set( &(uo[i + 1]), s );
        }
        //TODO handle int, long, char*, TQStringList, etc.
        else {
            throw Exception::Ptr( new Exception(TQString("Unknown TQt signal or slot argument '%1' in signature '%2'.").arg(paramlist[i]).arg(signature)) );
        }
    }

    return uo;
}

Kross::Api::Object::Ptr QtObject::propertyNames(Kross::Api::List::Ptr)
{
    return new Kross::Api::Variant(
        TQStringList::fromStrList(m_object->metaObject()->propertyNames(false)));
}

Kross::Api::Object::Ptr QtObject::hasProperty(Kross::Api::List::Ptr args)
{
    return new Kross::Api::Variant(
        m_object->metaObject()->findProperty(Kross::Api::Variant::toString(args->item(0)).latin1(), false));
}

Kross::Api::Object::Ptr QtObject::getProperty(Kross::Api::List::Ptr args)
{
    TQVariant variant = m_object->property(Kross::Api::Variant::toString(args->item(0)).latin1());
    if(variant.type() == TQVariant::Invalid)
        return 0;
    return new Kross::Api::Variant(variant);
}

Kross::Api::Object::Ptr QtObject::setProperty(Kross::Api::List::Ptr args)
{
    return new Kross::Api::Variant(
           m_object->setProperty(
               Kross::Api::Variant::toString(args->item(0)).latin1(),
               Kross::Api::Variant::toVariant(args->item(1))
           ));
}

Kross::Api::Object::Ptr QtObject::slotNames(Kross::Api::List::Ptr)
{
    return new Kross::Api::Variant(
           TQStringList::fromStrList(m_object->metaObject()->slotNames(false)));
}

Kross::Api::Object::Ptr QtObject::hasSlot(Kross::Api::List::Ptr args)
{
    return new Kross::Api::Variant(
           bool(m_object->metaObject()->slotNames(false).find(
               Kross::Api::Variant::toString(args->item(0)).latin1()
           ) != -1));
}

Kross::Api::Object::Ptr QtObject::callSlot(Kross::Api::List::Ptr args)
{
//TODO just call the child event ?!
    TQString name = Kross::Api::Variant::toString(args->item(0));
    int slotid = m_object->metaObject()->findSlot(name.latin1(), false);
    if(slotid < 0)
        throw Exception::Ptr( new Exception(TQString("No such slot '%1'.").arg(name)) );

    TQUObject* uo = QtObject::toTQUObject(name, args);
    m_object->tqt_invoke(slotid, uo);
    delete [] uo;

    return new Variant( TQVariant(true) );
}

Kross::Api::Object::Ptr QtObject::signalNames(Kross::Api::List::Ptr)
{
    return new Kross::Api::Variant(
           TQStringList::fromStrList(m_object->metaObject()->signalNames(false)));
}

Kross::Api::Object::Ptr QtObject::hasSignal(Kross::Api::List::Ptr args)
{
    return new Kross::Api::Variant(
           bool(m_object->metaObject()->signalNames(false).find(
               Kross::Api::Variant::toString(args->item(0)).latin1()
           ) != -1));
}

Kross::Api::Object::Ptr QtObject::emitSignal(Kross::Api::List::Ptr args)
{
    TQString name = Kross::Api::Variant::toString(args->item(0));
    int signalid = m_object->metaObject()->findSignal(name.latin1(), false);
    if(signalid < 0)
        throw Exception::Ptr( new Exception(TQString("No such signal '%1'.").arg(name)) );
    m_object->tqt_invoke(signalid, 0); //TODO convert Kross::Api::List::Ptr => TQUObject*
    return 0;
}

Kross::Api::Object::Ptr QtObject::connectSignal(Kross::Api::List::Ptr args)
{
    TQString signalname = Kross::Api::Variant::toString(args->item(0));
    TQString signalsignatur = TQString("2%1").arg(signalname);
    const char* signalsig = signalsignatur.latin1();

    QtObject* obj = Kross::Api::Object::fromObject<Kross::Api::QtObject>(args->item(1));
    TQObject* o = obj->getObject();
    if(! o)
        throw Exception::Ptr( new Exception(TQString("No such TQObject receiver in '%1'.").arg(obj->getName())) );

    TQString slotname = Kross::Api::Variant::toString(args->item(2));
    TQString slotsignatur = TQString("1%1").arg(slotname);
    const char* slotsig = slotsignatur.latin1();

    return new Kross::Api::Variant(
           TQObject::connect(m_object, signalsig, o, slotsig));
}

Kross::Api::Object::Ptr QtObject::disconnectSignal(Kross::Api::List::Ptr)
{
    //TODO
    return 0;
}