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/*
  This file is part of the kcalutils library.

  Copyright (c) 2001-2003 Cornelius Schumacher <schumacher@kde.org>
  Copyright (c) 2004 Reinhold Kainhofer <reinhold@kainhofer.com>
  Copyright (c) 2009-2010 Klarälvdalens Datakonsult AB, a KDAB Group company <info@kdab.net>

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

  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.
*/
/**
  @file
  This file is part of the API for handling calendar data and provides
  static functions for formatting Incidences for various purposes.

  @author Cornelius Schumacher \<schumacher@kde.org\>
  @author Reinhold Kainhofer \<reinhold@kainhofer.com\>
  @author Allen Winter \<allen@kdab.com\>
*/
#ifndef KCALUTILS_INCIDENCEFORMATTER_H
#define KCALUTILS_INCIDENCEFORMATTER_H

#include "kcalutils_export.h"

#include <kcalcore/incidence.h>
#include <kcalcore/memorycalendar.h>

namespace KCalUtils {

class KCALUTILS_EXPORT InvitationFormatterHelper
{
  public:
    InvitationFormatterHelper();
    virtual ~InvitationFormatterHelper();
    virtual QString generateLinkURL( const QString &id );
    virtual QString makeLink( const QString &id, const QString &text );
    virtual KCalCore::Calendar::Ptr calendar() const;

  private:
    //@cond PRIVATE
    Q_DISABLE_COPY( InvitationFormatterHelper )
    class Private;
    Private *const d;
    //@endcond
};

/**
  @brief
  Provides methods to format Incidences in various ways for display purposes.

  Helpers that provides several static methods to format an Incidence in
  different ways: like an HTML representation for KMail, a representation
  for tool tips, or a representation for a viewer widget.

*/
namespace IncidenceFormatter
{
  /**
    Create a QString representation of an Incidence in a nice format
    suitable for using in a tooltip.
    @param sourceName where the incidence is from (e.g. resource name)
    @param incidence is a pointer to the Incidence to be formatted.
    @param date is the QDate for which the toolTip should be computed; used
    mainly for recurring incidences. Note: For to-dos, this is the due date of
    the occurrence, not the start date.
    @param richText if yes, the QString will be created as RichText.
    @param spec is an optional time specification which, when specified,
    will shift the Incidence times to different timezones.
  */
  KCALUTILS_EXPORT QString toolTipStr( const QString &sourceName,
                                       const KCalCore::IncidenceBase::Ptr &incidence,
                                       const QDate &date = QDate(),
                                       bool richText = true,
                                       KDateTime::Spec spec = KDateTime::Spec() );

  /**
    Create a RichText QString representation of an Incidence in a nice format
    suitable for using in a viewer widget.
    @param calendar is a pointer to the Calendar that owns the specified Incidence.
    @param incidence is a pointer to the Incidence to be formatted.
    @param date is the QDate for which the string representation should be computed;
    used mainly for recurring incidences.
    @param spec is an optional time specification which, when specified,
    will shift the Incidence times to different timezones.
  */
  KCALUTILS_EXPORT QString extensiveDisplayStr( const KCalCore::Calendar::Ptr &calendar,
                                                const KCalCore::IncidenceBase::Ptr &incidence,
                                                const QDate &date=QDate(),
                                                KDateTime::Spec spec=KDateTime::Spec() );

  /**
    Create a RichText QString representation of an Incidence in a nice format
    suitable for using in a viewer widget.
    @param sourceName where the incidence is from (e.g. resource name)
    @param incidence is a pointer to the Incidence to be formatted.
    @param date is the QDate for which the string representation should be computed;
    used mainly for recurring incidences.
    @param spec is an optional time specification which, when specified,
    will shift the Incidence times to different timezones.
  */
  KCALUTILS_EXPORT QString extensiveDisplayStr( const QString &sourceName,
                                                const KCalCore::IncidenceBase::Ptr &incidence,
                                                const QDate &date=QDate(),
                                                KDateTime::Spec spec=KDateTime::Spec() );

  /**
    Create a QString representation of an Incidence in format suitable for
    including inside a mail message.
    @param incidence is a pointer to the Incidence to be formatted.
    @param spec is an optional time specification which, when specified,
    will shift the Incidence times to different timezones.
  */
  KCALUTILS_EXPORT QString mailBodyStr( const KCalCore::IncidenceBase::Ptr &incidence,
                                        KDateTime::Spec spec=KDateTime::Spec() );

  /**
    Deliver an HTML formatted string displaying an invitation.
    Use the time zone from mCalendar.

    @param invitation a QString containing a string representation of a calendar Incidence
    which will be intrepreted as an invitation.
    @param calendar is a pointer to the Calendar that owns the invitation.
    @param helper is a pointer to an InvitationFormatterHelper.
    @param outlookCompareStyle if true, display updated invitation comparisons in the style
    of Microsoft Outlook (tm); else use our own "classic" style.
  */
  KCALUTILS_EXPORT QString formatICalInvitation(
    QString invitation,
    const KCalCore::MemoryCalendar::Ptr &calendar,
    InvitationFormatterHelper *helper,
    bool outlookCompareStyle );

  /**
    Deliver an HTML formatted string displaying an invitation.
    Differs from formatICalInvitation() in that invitation details (summary, location, etc)
    have HTML formatting cleaned.
    Use the time zone from calendar.

    @param invitation a QString containing a string representation of a calendar Incidence
    which will be intrepreted as an invitation.
    @param calendar is a pointer to the Calendar that owns the invitation.
    @param helper is a pointer to an InvitationFormatterHelper.
    @param sender is a QString containing the email address of the person sending the invitation.
    @param outlookCompareStyle if true, display updated invitation comparisons in the style
    of Microsoft Outlook (tm); else use our own "classic" style.
  */
  KCALUTILS_EXPORT QString formatICalInvitationNoHtml(
    const QString &invitation,
    const KCalCore::MemoryCalendar::Ptr &calendar,
    InvitationFormatterHelper *helper,
    const QString &sender,
    bool outlookCompareStyle );

  /**
    Build a pretty QString representation of an Incidence's recurrence info.
    @param incidence is a pointer to the Incidence whose recurrence info
    is to be formatted.
  */
  KCALUTILS_EXPORT QString recurrenceString( const KCalCore::Incidence::Ptr &incidence );

  /**
    Returns a reminder string computed for the specified Incidence.
    Each item of the returning QStringList corresponds to a string
    representation of an reminder belonging to this incidence.
    @param incidence is a pointer to the Incidence.
    @param shortfmt if false, a short version of each reminder is printed;
    else a longer version of each reminder is printed.
  */
  KCALUTILS_EXPORT QStringList reminderStringList( const KCalCore::Incidence::Ptr &incidence,
                                                   bool shortfmt = true );

  /**
    Build a QString time representation of a KDateTime object.
    @param date The date to be formatted.
    @param shortfmt If true, display info in short format.
    @param spec Time spec to use.
    @see dateToString(), dateTimeToString().
  */
  KCALUTILS_EXPORT QString timeToString( const KDateTime &date, bool shortfmt = true,
                                         const KDateTime::Spec &spec = KDateTime::Spec() );

  /**
    Build a QString date representation of a KDateTime object.
    @param date The date to be formatted.
    @param shortfmt If true, display info in short format.
    @param spec Time spec to use.
    @see dateToString(), dateTimeToString().
  */
  KCALUTILS_EXPORT QString dateToString( const KDateTime &date, bool shortfmt = true,
                                         const KDateTime::Spec &spec = KDateTime::Spec() );

  /**
    Build a QString date/time representation of a KDateTime object.
    @param date The date to be formatted.
    @param dateOnly If true, don't print the time fields; print the date fields only.
    @param shortfmt If true, display info in short format.
    @param spec Time spec to use.
    @see dateToString(), timeToString().
  */
  KCALUTILS_EXPORT QString dateTimeToString( const KDateTime &date,
                                             bool dateOnly = false,
                                             bool shortfmt = true,
                                             const KDateTime::Spec &spec = KDateTime::Spec() );

  /**
    Returns a Calendar Resource label name for the specified Incidence.
    @param calendar is a pointer to the Calendar.
    @param incidence is a pointer to the Incidence.
  */
  KCALUTILS_EXPORT QString resourceString( const KCalCore::Calendar::Ptr &calendar,
                                           const KCalCore::Incidence::Ptr &incidence );

  /**
    Returns a duration string computed for the specified Incidence.
    Only makes sense for Events and Todos.
    @param incidence is a pointer to the Incidence.
  */
  KCALUTILS_EXPORT QString durationString( const KCalCore::Incidence::Ptr &incidence );

  /**
    Returns the translated string form of a specified #Status.
     @param status is a #Status type.
  */
  KCALUTILS_EXPORT QString incidenceStatusName( KCalCore::Incidence::Status status );

  /**
     Returns a translatedstatus string for this incidence
  */
  KCALUTILS_EXPORT QString incidenceStatusStr( const KCalCore::Incidence::Ptr &incidence );

  class EventViewerVisitor;
  class ScheduleMessageVisitor;
  class InvitationHeaderVisitor;
  class InvitationBodyVisitor;
  class IncidenceCompareVisitor;
  class ToolTipVisitor;
  class MailBodyVisitor;
}

}

#endif