/***************************************************************************
                          kmymoneydateinput.h
                             -------------------
    copyright            : (C) 2000 by Michael Edwardes
    email                : mte@users.sourceforge.net
 ***************************************************************************/

/***************************************************************************
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 ***************************************************************************/

#ifndef KMYMONEYDATEINPUT_H
#define KMYMONEYDATEINPUT_H

// ----------------------------------------------------------------------------
// QT Includes

#include <QWidget>
#include <QDateTime>
#include <QDateEdit>

// ----------------------------------------------------------------------------
// KDE Includes

#include <khbox.h>

// ----------------------------------------------------------------------------
// Project Includes

#include "kmm_widgets_export.h"

// Ideas neatly taken from korganizer
// Respective authors are credited.
// Some ideas/code have been borrowed from Calendar-0.13 (phoenix.bmedesign.com/~qt)

namespace KMyMoney {
  /**
    * Provided to be able to catch the focusOut events before the contents gets changed
    */
  class OldDateEdit : public QDateEdit
  {
    Q_OBJECT
  public:
    explicit OldDateEdit(const QDate& date, QWidget *parent = 0)
      : QDateEdit(date, parent)
      , m_initialSection(QDateTimeEdit::NoSection)
    {}

    void setInitialSection(Section section) { m_initialSection = section; }

  protected:
    /** if the date was cleared (a state which is not supported by QDateEdit)
      * make sure that a date can be entered again
      */
    virtual void keyPressEvent(QKeyEvent* k);

    /** reimplemented for internal reasons */
    virtual bool event(QEvent* e);

    /** reimplemented for internal reasons */
    virtual bool focusNextPrevChild(bool next);

    /** reimplemented for internal reasons */
    virtual void focusInEvent(QFocusEvent *event);

  private:
    QDateTimeEdit::Section  m_initialSection;
  };
}; // namespace

/**
  * This class provides the general widget used for date selection
  * throughout the KMyMoney project. It provides an QDateEdit widget
  * which is based on an edit field with spin boxes and adds a QPushButton
  * to open a KDatePicker.
  */
class KMM_WIDGETS_EXPORT kMyMoneyDateInput : public KHBox
{
  Q_OBJECT
  Q_PROPERTY(QDate date READ date WRITE setDate STORED false)

public:
  explicit kMyMoneyDateInput(QWidget *parent = 0, Qt::AlignmentFlag flags = Qt::AlignLeft);
  ~kMyMoneyDateInput();

  /**
    * Returns the selected date in the widget. If the widget is not
    * showing a date, a QDate() object is returned which has an invalid date.
    */
  QDate date() const;

  /**
    * Set the date shown in the widget to @a date. If @a date is invalid,
    * no text will be shown. The internal widget will use 1.1.1800 for this
    * special case, as the standard QDateEdit widget does not support an
    * invalid date as of Qt4 anymore, but we need it anyway for multi transaction
    * edit.
    */
  void setDate(QDate date);

  void setMaximumDate(const QDate& max);

  /**
    * Setup the widget with @a date. This date is stored internally and
    * can be reloaded using resetDate().
    *
    * @sa setDate, resetDate
    */
  void loadDate(const QDate& date);

  /**
    * Setup the widget with the date loaded using loadDate().
    *
    *  @sa loadDate
    */
  void resetDate();

  QWidget* focusWidget() const;
  void setRange(const QDate & min, const QDate & max);
  void markAsBadDate(bool bad = false, const QColor& = QColor());

signals:
  void dateChanged(const QDate& date);

protected:
  /**
    * - increments/decrements the date upon +/- key input
    * - increments/decrements the date upon Up/Down key input
    * - sets the date to current date when the 'T' key is pressed.
    *   The actual key for this to happen might be overridden through
    *   an i18n package. The 'T'-key is always possible.
    */
  void keyPressEvent(QKeyEvent* k);
  void showEvent(QShowEvent* event);

  /** To intercept events sent to focusWidget() */
  bool eventFilter(QObject *o, QEvent *e);


protected slots:
  void slotDateChosen(QDate date);
  void toggleDatePicker();

private slots:
  void slotDateChosenRef(const QDate& date);
  void fixSize();

private:
  struct Private;
  Private * const d;
};

#endif

