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// -*- c++ -*-
/*
* Copyright (C) 2001-2003, Richard J. Moore <rich@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; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef KJSEMBEDJSOPAQUEPROXY_H
#define KJSEMBEDJSOPAQUEPROXY_H
#include <tqcstring.h>
#include <tqevent.h>
#include <kjs/object.h>
#include <kjsembed/jsproxy.h>
#include <algorithm>
#include <typeinfo>
class TQTextStream;
namespace KJSEmbed {
/**
* Provides a binding to an opaque pointer value. This class stores a pointer
* without interpreting its type, it also stores the name of the type allowing
* it to retain type-safety.
*
* @author Richard Moore, rich@kde.org
*/
class KJSEMBED_EXPORT JSOpaqueProxy : public JSProxy
{
public:
/** Creates an opaque proxy. */
JSOpaqueProxy();
/** Creates an opaque proxy. */
template<typename T>
JSOpaqueProxy( T *nptr, const char *ptype )
: JSProxy( JSProxy::OpaqueProxy ), ptrtype(ptype), ptr(new Pointer<T>(nptr))
{
}
/** Creates an opaque proxy. */
JSOpaqueProxy( TQTextStream *ts );
/** Creates an opaque proxy. */
JSOpaqueProxy( const TQEvent *ev );
/** Cleans up. */
virtual ~JSOpaqueProxy();
/** Returns the type of the wrapped object.*/
TQString typeName() const;
/** Sets the value of the proxy and its type. */
template<typename T>
void setValue( T *nptr, const char *ptype ) {
if( ptr ) {
if(owner() == JavaScript) ptr->cleanup();
delete ptr;
}
ptr = new Pointer<T>(nptr);
ptrtype = ptype ? ptype : "void";
}
/** Sets the value of the proxy to a TQTextStream. */
void setValue( TQTextStream *ts );
/** Sets the value of the proxy to a TQEvent. */
void setValue( const TQEvent *ev );
/** Returns the proxy value as a pointer. */
template<typename T>
T *toNative() {
if( !ptr ) return 0L; // empty
T *value = 0L;
return (T*)ptr->voidStar(); // Hack for now
return value; // return real value
}
/** Returns true iff the content of this proxy inherits the specified base-class. */
bool inherits( const char *clazz );
/**
* Returns the TQTextStream stored in the proxy. If proxy does not contain
* a value of type TQTextStream then 0 is returned.
*/
TQTextStream *toTextStream();
const TQEvent *toEvent();
/** Adds the bindings for the opaque proxy to the specified js object. */
virtual void addBindings( KJS::ExecState *state, KJS::Object &object );
/** Reimplemented to return the name and class of the target. */
virtual KJS::UString toString( KJS::ExecState *exec ) const;
private:
TQTextStream *textstream;
const TQEvent *event;
TQCString ptrtype;
class JSOpaqueProxyPrivate *d;
// container objects
class PointerBase
{
public:
virtual ~PointerBase() {};
virtual void cleanup() = 0;
virtual const std::type_info &type() const = 0;
virtual void *voidStar() = 0;
//template<typename ValueType>
//virtual void castTo(ValueType *& val) = 0L;
};
template<typename ValueType>
class Pointer : public PointerBase
{
public:
Pointer( ValueType *value) : ptr(value) {}
~Pointer( ) {}
void cleanup()
{
delete ptr;
ptr=0L;
}
const std::type_info &type() const
{
return typeid(ValueType);
}
void *voidStar()
{
return (void*)ptr;
}
//template<typename type>
//virtual void castTo(type *& val)
//{
// val = dynamic_cast<type*>(ptr);
// kdDebug() << "Type " << val << endl;
//}
ValueType *ptr;
};
PointerBase *ptr;
};
} // namespace KJSEmbed
#endif // KJSEMBEDJSOPAQUEPROXYIMP_H
// Local Variables:
// c-basic-offset: 4
// End:
|
