File indexing completed on 2024-09-08 03:39:05

 /*
     This file is part of the KDE libraries
     SPDX-FileCopyrightText: 2001 Frerich Raabe <raabe@kde.org>
     SPDX-FileCopyrightText: 2003 Carsten Pfeiffer <pfeiffer@kde.org>
 
     SPDX-License-Identifier: LGPL-2.0-or-later
 */
 
 #ifndef __KPREVIEWWIDGETBASE_H__
 #define __KPREVIEWWIDGETBASE_H__
 
 #include <QWidget>
 
 #include "kiofilewidgets_export.h"
 
 #include <memory>
 
 class QUrl;
 
 /**
  * @class KPreviewWidgetBase kpreviewwidgetbase.h <KPreviewWidgetBase>
  *
  * 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 QUrl &) is called
  * every time the file selection changes.
  *
  * @short Abstract baseclass for all preview widgets.
  * @author Frerich Raabe <raabe@kde.org>
  */
 class KIOFILEWIDGETS_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
      */
     explicit KPreviewWidgetBase(QWidget *parent);
     ~KPreviewWidgetBase() override;
 
     QStringList supportedMimeTypes() const;
 
 public Q_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 QUrl &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;
 
 protected:
     void setSupportedMimeTypes(const QStringList &mimeTypes);
 
 private:
     class KPreviewWidgetBasePrivate;
     std::unique_ptr<KPreviewWidgetBasePrivate> const d;
 
     Q_DISABLE_COPY(KPreviewWidgetBase)
 };
 
 #endif