/* This file is part of the KDE libraries
   Copyright (C) 2001 - 2004 Anders Lund <anders@alweb.dk>

   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public
   License version 2 as published by the Free Software Foundation.

   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 _KMIMETYPE_CHOOSER_H_
#define _KMIMETYPE_CHOOSER_H_

#include <tqvbox.h>
#include <kdialogbase.h>


/**
 * This widget provides a checkable list of all available mimetypes,
 * and a list of selected ones, as well as a corresponding list of file
 * extensions, an optional text and an optional edit button (not working yet).
 * Mime types is presented in a list view, with name, comment and patterns columns.
 *
 * @author Anders Lund (anders at alweb dk), jan 23, 2002
 */
class TDEIO_EXPORT KMimeTypeChooser : public TQVBox
{
  Q_OBJECT

  public:
    /**
     * Buttons and data for display.
     */
    enum Visuals {
      Comments=1,   ///< Show the Mimetypes Comment field in a column ("HTML Document").
      Patterns=2,   ///< Show the Mimetypes Patterns field in a column ("*.html;*.htm").
      EditButton=4  ///< Show the "Edit" button, allowing to edit the selected type.
    };
    /**
     * Create a new KMimeTypeChooser.
     *
     * @param text A Text to display above the list
     * @param selectedMimeTypes A list of mimetype names, theese will be checked
     *        in the list if they exist.
     * @param visuals A OR'd Visuals enum to decide which data and buttons to display.
     * @param defaultGroup The group to open when no groups are selected (like
     *        "text"). If not provided, no group is opened. If @p groupsToShow
     *        is provided and defaultGroup is not a member of that, it is ignored.
     * @param groupsToShow a list of mimetype groups to show. If empty, all
     *        groups are shown.
     * @param parent The parent widget to use
     * @param name The internal name of this object
     */
    KMimeTypeChooser( const TQString& text=TQString::null,
                      const TQStringList &selectedMimeTypes=0,
                      const TQString &defaultGroup=TQString::null,
                      const TQStringList &groupsToShow=TQStringList(),
                      int visuals=Comments|Patterns|EditButton,
                      TQWidget *parent=0, const char *name=0 );
    ~KMimeTypeChooser();

    /**
     * @return a list of all selected selected mimetypes represented by their name.
     */
    TQStringList mimeTypes() const;
    /**
     * @return a list of the fileame patterns associated with all selected mimetypes.
     */
    TQStringList patterns() const;

  public slots:
    /**
     * @short edit the current mimetype
     * Uses KRun to start the KDE mimetype editor for editing the currently
     * selected mimetype.
     */
    void editMimeType();

  private slots:
    /**
     * @internal disables the "edit" button for groups
     */
    void slotCurrentChanged(TQListViewItem* i);

    /**
     *  @internal called when the sycoca database has changed after
     * the user edited a mimetype
     */
     void slotSycocaDatabaseChanged();

  private:
    /**
     * @internal Load mime types into the list view
     * If @p selected is empty, selectedMimeTypesStringList() is called
     * to fill it in.
     */
    void loadMimeTypes( const TQStringList &selected=TQStringList() );

    class KMimeTypeChooserPrivate *d;
};

/**
  * @short A Dialog to choose some mimetypes.
  * Provides a checkable tree list of mimetypes, with icons and optinally
  * comments and patterns, and an (optional) button to display the KDE mimetype
  * editor.
  *
  * Here is an example, using the dialog to set the text of two lineedits:
  *
  * @code
  *    TQString text = i18n("Select the MimeTypes you want for this file type.");
  *    TQStringList list = TQStringList::split( TQRegExp("\\s*;\\s*"), leMimetypes->text() );
  *    KMimeTypeChooserDialog *d = new KMimeTypeChooserDialog( this, 0,
  *                  i18n("Select Mime Types"), text, list, "text" );
  *    if ( d->exec() == KDialogBase::Accepted ) {
  *      leWildcards->setText( d->chooser()->patterns().join(";") );
  *      leMimetypes->setText( d->chooser()->mimeTypes().join(";") );
  *    }
  * @endcode
  *
  * @author Anders Lund (anders at alweb dk) dec 19, 2001
  */
class TDEIO_EXPORT KMimeTypeChooserDialog : public KDialogBase
{
  public:
    /**
     * Create a KMimeTypeChooser dialog.
     *
     * @param caption The title of the dialog
     * @param text A Text to display above the list
     * @param selectedMimeTypes A list of mimetype names, theese will be
     *        checked in the list if they exist.
     *        patterns will be added to the list view.
     * @param visuals A OR'd KMimetypeChooser::Visuals enum to decide which data
     *        and buttons to display.
     * @param defaultGroup The group to open when no groups are selected (like
     *        "text"). If not provided, no group is opened. If @p groupsToShow
     *        is provided and defaultGroup is not a member of that, it is ignored.
     * @param groupsToShow a list of mimetype groups to show. If empty, all
     *        groups are shown.
     * @param parent The parent widget to use
     * @param name The internal name of this object
     */
    KMimeTypeChooserDialog( const TQString &caption=TQString::null,
                         const TQString& text=TQString::null,
                         const TQStringList &selectedMimeTypes=TQStringList(),
                         const TQString &defaultGroup=TQString::null,
                         const TQStringList &groupsToShow=TQStringList(),
                         int visuals=KMimeTypeChooser::Comments|KMimeTypeChooser::Patterns|KMimeTypeChooser::EditButton,
                         TQWidget *parent=0, const char *name=0 );

    /**
     * @overload
     */
    KMimeTypeChooserDialog( const TQString &caption,
                         const TQString& text,
                         const TQStringList &selectedMimeTypes,
                         const TQString &defaultGroup,
                         TQWidget *parent=0, const char *name=0 );

    ~KMimeTypeChooserDialog();

    /**
     * @return a pointer to the KMimeTypeChooser widget
     */
     KMimeTypeChooser* chooser() { return m_chooser; }

  private:
    KMimeTypeChooser *m_chooser;
};
#endif // _KMIMETYPE_CHOOSER_H_