Source: kauthicon.h

# Source: kauthicon.h |
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    /* This file is part of the KDE libraries
       Copyright (c) 1999 Preston Brown

       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., 59 Temple Place - Suite 330,
       Boston, MA 02111-1307, USA.
    */
    #ifndef _KAUTHICON_H
    #define _KAUTHICON_H "$Id: kauthicon.h,v 1.12 2002/03/04 00:51:46 lunakl Exp $"

    #include
    #include
    #include
    #include

    class QHBoxLayout;
    class QLabel;
    class KAuthIconPrivate;

    /**
     * This is the base class from which different authorization icon widget
     * which actually do something should be derived.  You can use these
     * widgets to show that the user has (or doesn't have) the ability to do
     * something, and why that is.
     *
     * One of the most useful things you can do with this is connect
     * @ref authChanged(bool) to @ref setEnabled(bool) for a widget to turn it on and
     * off depending on the status of whatever it is you are monitoring.
     *
     * @short ABC for authorization icon widgets
     * @see KRootPermsIcon, KWritePermsIcon
     * @author Preston Brown
     */
    class KAuthIcon : public QWidget
    {
      Q_OBJECT

    public:
      /**
       * Constructor.
       */
      KAuthIcon(QWidget *parent = 0, const char *name = 0);
      ~KAuthIcon();

      virtual QSize sizeHint() const;
      /**
       * return the status of whatever is being monitored.
       */
      virtual bool status() const = 0;

    public slots:
      /**
       * Re-implement this method if you want the icon to update itself
       * when something external has changed (i.e. a file on disk, uid/gid).
       */
      virtual void updateStatus() = 0;

    signals:
      /**
       * this signal is emitted when authorization has changed from
       * its previous state.
       * @param authorized will be true if the type of authorization
       * described by the icon is true, otherwise it will be false.
       */
      void authChanged(bool authorized);

    protected:
      QHBoxLayout *layout;

      QLabel *lockBox;
      QLabel *lockLabel;
      QPixmap lockPM;
      QPixmap openLockPM;
      QString lockText;
      QString openLockText;

    protected:
      virtual void virtual_hook( int id, void* data );
    private:
      KAuthIconPrivate *d;
    };

    class KRootPermsIconPrivate;
    /**
     * Icon to show whether or not a user has root permissions.
     * @see KAuthIcon
     * @author Preston Brown
     */
    class KRootPermsIcon : public KAuthIcon
    {
      Q_OBJECT

    public:
      KRootPermsIcon(QWidget *parent = 0, const char *name = 0);
      ~KRootPermsIcon();

      /**
       * return whether or not the current user has root permissions.
       */
      bool status() const { return root; }

    public slots:
      void updateStatus();

    protected:
      bool root;

    protected:
      virtual void virtual_hook( int id, void* data );
    private:
      KRootPermsIconPrivate *d;
    };

    class KWritePermsIconPrivate;
    /**
     * Auth icon for write permission display.
     *
     * @see KAuthIcon
     * @author Preston Brown
     */
    class KWritePermsIcon : public KAuthIcon
    {
      Q_OBJECT

    public:
      KWritePermsIcon(const QString & fileName, QWidget *parent = 0, const char *name = 0);
      ~KWritePermsIcon();
      /**
       * @return whether or not the monitored file is writable.
       */
      bool status() const { return writable; }

      /**
       * make the icon watch a new filename.
       * @param fileName the new file to monitor / display status for.
       */
      void setFileName(const QString & fileName) { fi.setFile(fileName); updateStatus(); }

    public slots:
      void updateStatus();

    protected:
      bool writable;
      QFileInfo fi;

    protected:
      virtual void virtual_hook( int id, void* data );
    private:
      KWritePermsIconPrivate *d;
    };

    #endif

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