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93 lines
3.0 KiB
93 lines
3.0 KiB
15 years ago
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/* This file is part of the KDE libraries
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* Copyright (C) 2001 Frerich Raabe <raabe@kde.org>
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* 2003 Carsten Pfeiffer <pfeiffer@kde.org>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public License
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* along with this library; see the file COPYING.LIB. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef __KPREVIEWWIDGETBASE_H__
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#define __KPREVIEWWIDGETBASE_H__
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#include <qptrdict.h>
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#include <qwidget.h>
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#include <kdelibs_export.h>
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class KURL;
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/**
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* Abstract baseclass for all preview widgets which shall be used via
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* KFileDialog::setPreviewWidget(const KPreviewWidgetBase *).
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* Ownership will be transferred to KFileDialog, so you have to create
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* the preview with "new" and let KFileDialog delete it.
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*
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* Just derive your custom preview widget from KPreviewWidgetBase and implement
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* all the pure virtual methods. The slot showPreview(const KURL &) is called
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* every time the file selection changes.
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*
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* @short Abstract baseclass for all preview widgets.
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* @author Frerich Raabe <raabe@kde.org>
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*/
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class KIO_EXPORT KPreviewWidgetBase : public QWidget
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{
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Q_OBJECT
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public:
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/**
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* Constructor. Construct the user interface of your preview widget here
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* and pass the KFileDialog this preview widget is going to be used in as
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* the parent.
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*
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* @param parent The KFileDialog this preview widget is going to be used in
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* @param name The internal name of this object
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*/
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KPreviewWidgetBase(QWidget *parent, const char *name=0);
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~KPreviewWidgetBase();
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public slots:
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/**
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* This slot is called every time the user selects another file in the
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* file dialog. Implement the stuff necessary to reflect the change here.
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*
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* @param url The URL of the currently selected file.
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*/
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virtual void showPreview(const KURL &url) = 0;
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/**
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* Reimplement this to clear the preview. This is called when e.g. the
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* selection is cleared or when multiple selections exist, or the directory
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* is changed.
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*/
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virtual void clearPreview() = 0;
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QStringList supportedMimeTypes() const;
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protected:
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void setSupportedMimeTypes( const QStringList& mimeTypes );
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protected:
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virtual void virtual_hook( int, void* ) {};
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private:
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class KPreviewWidgetBasePrivate;
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KPreviewWidgetBasePrivate * d() const {
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return s_private->find( const_cast<KPreviewWidgetBase*>( this ) );
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}
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static QPtrDict<KPreviewWidgetBasePrivate> * s_private;
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};
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#endif
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