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- /* This file is part of the KDE libraries
- * Copyright (C) 2001 Frerich Raabe <raabe@kde.org>
- * 2003 Carsten Pfeiffer <pfeiffer@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 __KPREVIEWWIDGETBASE_H__
- #define __KPREVIEWWIDGETBASE_H__
-
- #include <qptrdict.h>
- #include <qwidget.h>
-
- #include <kdelibs_export.h>
-
- class KURL;
-
- /**
- * Abstract baseclass for all preview widgets which shall be used via
- * KFileDialog::setPreviewWidget(const KPreviewWidgetBase *).
- * Ownership will be transferred to KFileDialog, so you have to create
- * the preview with "new" and let KFileDialog delete it.
- *
- * Just derive your custom preview widget from KPreviewWidgetBase and implement
- * all the pure virtual methods. The slot showPreview(const KURL &) is called
- * every time the file selection changes.
- *
- * @short Abstract baseclass for all preview widgets.
- * @author Frerich Raabe <raabe@kde.org>
- */
- class KIO_EXPORT KPreviewWidgetBase : public QWidget
- {
- Q_OBJECT
-
- public:
- /**
- * Constructor. Construct the user interface of your preview widget here
- * and pass the KFileDialog this preview widget is going to be used in as
- * the parent.
- *
- * @param parent The KFileDialog this preview widget is going to be used in
- * @param name The internal name of this object
- */
- KPreviewWidgetBase(QWidget *parent, const char *name=0);
- ~KPreviewWidgetBase();
-
- public slots:
- /**
- * This slot is called every time the user selects another file in the
- * file dialog. Implement the stuff necessary to reflect the change here.
- *
- * @param url The URL of the currently selected file.
- */
- virtual void showPreview(const KURL &url) = 0;
-
- /**
- * Reimplement this to clear the preview. This is called when e.g. the
- * selection is cleared or when multiple selections exist, or the directory
- * is changed.
- */
- virtual void clearPreview() = 0;
-
- QStringList supportedMimeTypes() const;
-
- protected:
- void setSupportedMimeTypes( const QStringList& mimeTypes );
-
- protected:
- virtual void virtual_hook( int, void* ) {};
-
- private:
- class KPreviewWidgetBasePrivate;
- KPreviewWidgetBasePrivate * d() const {
- return s_private->find( const_cast<KPreviewWidgetBase*>( this ) );
- }
- static QPtrDict<KPreviewWidgetBasePrivate> * s_private;
- };
-
- #endif
-