Source: ktip.h

/*****************************************************************

Copyright (c) 2000,2001 Matthias Hoelzer-Kluepfel

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******************************************************************/

#ifndef __K_TIP_H__
#define __K_TIP_H__


#include 


class QCheckBox;


#include 


class KTextBrowser;


/**
 * A database for tips-of-the-day.
 *
 * This class provides convenient access to a database containing
 * tips of the day. The database is stored in a XML file and parsed
 * when a KTipDatabase object is created.
 *
 * Once the file is read in, you can access the tips to display
 * them in the tip of the day dialog.
 *
 * The state of the tipdialog is saved to the applications's config file
 * in the group "TipOfDay" with a bool entry "RunOnStart". Check this value
 * if you want to allow the user to enable/disable the tipdialog in the
 * application's configuration dialog.
 *
 * @author Matthias Hoelzer-Kluepfel 
 *
 */
class KTipDatabase
{
public:

  /**
   * The constructor.
   *
   * This reads in the tips from a file with the given name. If no name is
   * given, a file called 'application-name/tips' will be loaded.
   *
   * @param tipFile The name of the tips file.
   */
  KTipDatabase(const QString &tipFile=QString::null);

  /**
   * Returns the current tip.
   */
  QString tip() const;

  /**
   * The next tip will become the current one.
   */
  void nextTip();

  /**
   * The previous tip will become the current one.
   */
  void prevTip();


private:

  void loadTips(const QString &tipFile);

  QStringList tips;

  int current;
  class KTipDatabasePrivate;
  KTipDatabasePrivate *d;
};


/**
 * A Tip-of-the-Day dialog.
 *
 * This dialog class presents a tip-of-the-day.
 *
 * @author Matthias Hoelzer-Kluepfel 
 */
class KTipDialog : public KDialog
{
  Q_OBJECT

public:

  /**
   * Show a tip.
   *
   * This static method is all that is needed to add a tip-of-the-day
   * dialog to an application. It will pop up the dialog, unless the
   * user has asked that the dialog does not pop up on startup.
   *
   * Note that you probably want an item in the help menu calling
   * this method with force=true.
   * 
   * @param parent Parent widget of TipDialog.
   * @param tipFile The name of the tip file.
   * @param force If true, the dialog is show, even when the users
   *              disabled it.
   */
  static void showTip(QWidget *parent,const QString &tipFile=QString::null, bool force=false);

  /**
   * Show a tip.
   *
   * This methods calls showTip() with the applications main window as parent.
   *
   */
  static void showTip(const QString &tipFile=QString::null, bool force=false);

  /**
   * Toggle the start behaviour.
   *
   * Normally, the user can disable the display of the tip in the dialog.
   * This is just a way to change this setting from outside.
   */
  static void setShowOnStart(bool show);


protected:

  KTipDialog(KTipDatabase *db, QWidget *parent=0, const char *name=0);


private slots:

  void nextTip();
  void showOnStart(bool);


private:

  KTipDatabase *_database;

  QCheckBox *_tipOnStart;
  KTextBrowser *_tipText;

  class KTipDialogPrivate;
  KTipDialogPrivate *d;

  static KTipDialog *_instance;

};


#endif