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/* This file is part of the KDE project
Copyright (C) 2002, 2003 Joseph Wenninger <jowenn@kde.org>
Copyright (C) 2005 Jaroslaw Staniek <js@iidea.pl>
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 KEXI_DRAGOBJECTS_H_
#define KEXI_DRAGOBJECTS_H_
#include <tqdragobject.h>
class TQString;
class TQStringList;
class TQWidget;
//! Drag object containing information about field(s).
class KEXICORE_EXPORT KexiFieldDrag : public TQStoredDrag
{
public:
/*! Creates drag object for a single field \a field. */
KexiFieldDrag(const TQString& sourceMimeType, const TQString& sourceName,
const TQString& field, TQWidget *parent, const char *name);
/*! Creates drag object for multiple fields \a fields.
If there's less than two elements in the list, data is set up as for above ctor. */
KexiFieldDrag(const TQString& sourceMimeType, const TQString& sourceName,
const TQStringList& field, TQWidget *parent=0, const char *name=0);
~KexiFieldDrag();
void addField(const TQString& field);
/*! \return true if event \a e (of class TQDragMoveEvent or TQDropEvent)
can be decoded as "kexi/field" data */
static bool canDecodeSingle( TQMimeSource* e );
/*! \return true if event \a e (of class TQDragMoveEvent or TQDropEvent)
can be decoded as "kexi/fields" data. If decoding of "kexi/field"
type is supported, decoding of "kexi/fields" is always supported.
*/
static bool canDecodeMultiple( TQMimeSource* e );
/*! Decodes data of single-field drag ("kexi/field" mime type) coming with event \a e.
Sets \a sourceMimeType, \a sourceName and \a field.
\return true on successful decoding (\a e will be accepted in such case). */
static bool decodeSingle( TQDropEvent* e, TQString& sourceMimeType,
TQString& sourceName, TQString& field );
/*! Decodes data of multiple-field drag ("kexi/fields" mime type) coming with event \a e.
Sets \a sourceMimeType, \a sourceName and \a fields. Also works with "kexi/field" data.
\return true on successful decoding (\a e will be accepted in such case). */
static bool decodeMultiple( TQDropEvent* e, TQString& sourceMimeType,
TQString& sourceName, TQStringList& fields );
};
class KEXICORE_EXPORT KexiDataProviderDrag : public TQStoredDrag
{
public:
KexiDataProviderDrag(const TQString& sourceMimeType, const TQString& sourceName,
TQWidget *parent=0, const char *name=0);
~KexiDataProviderDrag() { };
static bool canDecode( TQDragMoveEvent* e);
static bool decode( TQDropEvent* e, TQString& sourceMimeType, TQString& sourceName);
};
#endif
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