/*
  This file is part of KOrganizer.

  Copyright (c) 2000,2001,2003 Cornelius Schumacher <schumacher@kde.org>
  Copyright (C) 2003-2004 Reinhold Kainhofer <reinhold@kainhofer.com>
  Copyright (c) 2005 Rafal Rzepecki <divide@users.sourceforge.net>
  Copyright (c) 2008 Thomas Thrainer <tom_t@gmx.at>

  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.

  This program 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 General Public License for more details.

  You should have received a copy of the GNU General Public License along
  with this program; if not, write to the Free Software Foundation, Inc.,
  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.

  As a special exception, permission is given to link this program
  with any edition of Qt, and distribute the resulting executable,
  without including the source code for Qt in the source distribution.
*/
#ifndef CALENDARVIEWS_TODOVIEW_H
#define CALENDARVIEWS_TODOVIEW_H

#include "eventview.h"
#include <Akonadi/Calendar/ETMCalendar>
#include <Akonadi/Calendar/IncidenceChanger>

#include <KConfig>
#include <QPointer>

class KJob;
class TodoCategoriesDelegate;
class TodoViewQuickAddLine;
class TodoViewQuickSearch;
class TodoViewSortFilterProxyModel;
class TodoViewView;

namespace KPIM {
class KDatePickerPopup;
}

namespace Akonadi {
class ETMViewStateSaver;
}

class QItemSelection;
class QMenu;
class QModelIndex;
class QToolButton;
class QTimer;

namespace EventViews {
class EVENTVIEWS_EXPORT TodoView : public EventViews::EventView
{
    Q_OBJECT
    friend class ModelStack;

public:
    TodoView(const EventViews::PrefsPtr &preferences, bool sidebarView, QWidget *parent);
    ~TodoView();

    void setCalendar(const Akonadi::ETMCalendar::Ptr &) override;

    Akonadi::Item::List selectedIncidences() const override;
    KCalCore::DateList selectedIncidenceDates() const override;
    int currentDateCount() const override
    {
        return 0;
    }

    void setDocumentId(const QString &)
    {
    }

    void saveLayout(KConfig *config, const QString &group) const;

    void restoreLayout(KConfig *config, const QString &group, bool minimalDefaults);

    /** documentation in baseview.h */
    void getHighlightMode(bool &highlightEvents, bool &highlightTodos, bool &highlightJournals);

    bool usesFullWindow();

    bool supportsDateRangeSelection()
    {
        return false;
    }

public Q_SLOTS:
    void setIncidenceChanger(Akonadi::IncidenceChanger *changer) override;
    void showDates(const QDate &start, const QDate &end,
                   const QDate &preferredMonth = QDate()) override;
    void showIncidences(const Akonadi::Item::List &incidenceList, const QDate &date) override;
    void updateView() override;
    virtual void changeIncidenceDisplay(const Akonadi::Item &incidence,
                                        Akonadi::IncidenceChanger::ChangeType changeType);
    void updateConfig() override;
    void clearSelection() override;
    void expandIndex(const QModelIndex &index);
    void restoreViewState();
    void saveViewState();

    void createNote();
    void createEvent();

protected Q_SLOTS:
    void resizeEvent(QResizeEvent *) override;
    void addQuickTodo(Qt::KeyboardModifiers modifier);

    void contextMenu(const QPoint &pos);

    void selectionChanged(const QItemSelection &selected, const QItemSelection &deselected);

    // slots used by popup-menus
    void showTodo();
    void editTodo();
    void deleteTodo();
    void newTodo();
    void newSubTodo();
    void copyTodoToDate(const QDate &date);

private Q_SLOTS:
    void scheduleResizeColumns();
    void resizeColumns();
    void itemDoubleClicked(const QModelIndex &index);
    void setNewDate(const QDate &date);
    void setNewPercentage(QAction *action);
    void setNewPriority(QAction *action);
    void changedCategories(QAction *action);
    void setFullView(bool fullView);

    void setFlatView(bool flatView, bool notifyOtherViews = true);

    void onRowsInserted(const QModelIndex &parent, int start, int end);
    void onTagsFetched(KJob *);

Q_SIGNALS:
    void purgeCompletedSignal();
    void unSubTodoSignal();
    void unAllSubTodoSignal();
    void configChanged();
    void fullViewChanged(bool enabled);
    void printPreviewTodo();
    void printTodo();

    void createNote(const Akonadi::Item &item);
    void createEvent(const Akonadi::Item &item);

private:
    QMenu *createCategoryPopupMenu();
    QString stateSaverGroup() const;

    /** Creates a new todo with the given text as summary under the given parent */
    void addTodo(const QString &summary, const Akonadi::Item &parentItem,
                 const QStringList &categories = QStringList());

    TodoViewView *mView = nullptr;
    TodoViewSortFilterProxyModel *mProxyModel = nullptr;
    TodoCategoriesDelegate *mCategoriesDelegate = nullptr;

    TodoViewQuickSearch *mQuickSearch = nullptr;
    TodoViewQuickAddLine *mQuickAdd = nullptr;
    QToolButton *mFullViewButton = nullptr;
    QToolButton *mFlatViewButton = nullptr;

    QMenu *mItemPopupMenu = nullptr;
    KPIM::KDatePickerPopup *mCopyPopupMenu = nullptr;
    KPIM::KDatePickerPopup *mMovePopupMenu = nullptr;
    QMenu *mPriorityPopupMenu = nullptr;
    QMenu *mPercentageCompletedPopupMenu = nullptr;
    QList<QAction *> mItemPopupMenuItemOnlyEntries;
    QList<QAction *> mItemPopupMenuReadWriteEntries;

    QAction *mMakeTodoIndependent = nullptr;
    QAction *mMakeSubtodosIndependent = nullptr;

    QPointer<Akonadi::ETMViewStateSaver> mTreeStateRestorer;

    QMap<QAction *, int> mPercentage;
    QMap<QAction *, int> mPriority;
    bool mSidebarView;
    bool mResizeColumnsScheduled;
    QTimer *mResizeColumnsTimer = nullptr;
};
}

#endif
