/*
  This file is part of the KDE Kontact Plugin Interface Library.

  SPDX-FileCopyrightText: 2003 Cornelius Schumacher <schumacher@kde.org>

  SPDX-License-Identifier: LGPL-2.0-or-later
*/
#pragma once

#include "kontactinterface_export.h"

#include <QWidget>

class QMouseEvent;
class QDragEnterEvent;
class QDropEvent;

namespace KontactInterface
{
/*!
 * \class KontactInterface::Summary
 * \inmodule KontactInterface
 * \inheaderfile KontactInterface/Summary
 *
 * \brief Base class for summary widgets in Kontact.
 * \namespace KontactInterface
 *
 * This class should be used as base class when creating new
 * summary widgets for the Summary View plugin in Kontact.
 */
class KONTACTINTERFACE_EXPORT Summary : public QWidget
{
    Q_OBJECT

public:
    /*!
     * Creates a new summary widget.
     *
     * \a parent The parent widget.
     */
    explicit Summary(QWidget *parent);

    /*!
     * Destroys the summary widget.
     */
    ~Summary() override;

    /*!
     * Returns the logical height of summary widget.
     *
     * This is used to calculate how much vertical space relative
     * to other summary widgets this widget will use in the summary view.
     */
    [[nodiscard]] virtual int summaryHeight() const;

    /*!
     * Creates a heading for a typical summary view with an icon and a heading.
     *
     * \a parent The parent widget.
     * \a icon The name of the icon.
     * \a heading The text of the header.
     */
    [[nodiscard]] QWidget *createHeader(QWidget *parent, const QString &icon, const QString &heading);

    /*!
     * Returns a list of names identifying configuration modules for this summary widget.
     *
     * Note The names have to be suitable for being passed to KCMultiDialog::addModule().
     */
    [[nodiscard]] virtual QStringList configModules() const;

public Q_SLOTS:
    /*!
     * This method is called whenever the configuration has been changed.
     */
    virtual void configChanged();

    /*!
     * This method is called if the displayed information should be updated.
     *
     * \a force true if the update was requested by the user
     */
    virtual void updateSummary(bool force = false);

Q_SIGNALS:
    /*!
     * This signal can be emitted to signaling that an action is going on.
     * The specified message QString will be shown in the status bar.
     */
    void message(const QString &);

    /*!
     * \internal
     *
     * This signal is emitted whenever a summary widget has been dropped on
     * this summary widget.
     */
    void summaryWidgetDropped(QWidget *, QObject *, int);

protected:
    void mousePressEvent(QMouseEvent *) override;
    void mouseMoveEvent(QMouseEvent *) override;
    void dragEnterEvent(QDragEnterEvent *) override;
    void dropEvent(QDropEvent *) override;

private:
    class SummaryPrivate;
    std::unique_ptr<SummaryPrivate> const d;
};

}
