/*
 *   Copyright (C) 2007 Ivan Cukic <ivan.cukic+kde@gmail.com>
 *
 *   This program is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU Library/Lesser General Public License
 *   version 2, or (at your option) any later version, as published by the
 *   Free Software Foundation
 *
 *   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 Library/Lesser 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.
 */

#ifndef PLASMA_KCATEGORIZEDITEMSVIEW_P_H
#define PLASMA_KCATEGORIZEDITEMSVIEW_P_H

#include <QtGui/QtGui>
#include <QtCore/QtCore>

#include "kcategorizeditemsviewmodels_p.h"

#include "ui_kcategorizeditemsviewbase.h"

using namespace KCategorizedItemsViewModels;
class KCategorizedItemsViewDelegate;

/**
 * QT4 View Widget for displaying a list of categorized items with special
 * filtering capabilities.
 *
 * To use it, you need to implement KCategorizedItemsView::AbstractItem
 *
 * For convenience, there are default implementations of category model
 * (DefaultCategoryModel), filters model (DefaultFilterModel) and the
 * default item mode (DefaultItemModel), but you do not need to use them.
 *
 * One constraint is that DefaultItemModel *must* hold the items that
 * are subclassed from KCategorizedItemsView::AbstractItem
 *
 */
class KCategorizedItemsView: public QWidget, public Ui::KCategorizedItemsViewBase
{
    Q_OBJECT
public:

    explicit KCategorizedItemsView(QWidget *parent = 0, Qt::WindowFlags f = 0);
    virtual ~KCategorizedItemsView();

    void setFilterModel(QStandardItemModel *model);             ///< Sets the filters model
    void setItemModel(QStandardItemModel *model);               ///< Sets the item model, as mentioned items must implement AbstractItem class

    void addEmblem(const QString &title, const QIcon &icon, const Filter &filter);
    void clearEmblems();

    QList < AbstractItem * > selectedItems() const;

Q_SIGNALS:
    void activated(const QModelIndex &index);
    void clicked(const QModelIndex &index);
    void doubleClicked(const QModelIndex &index);
    void entered(const QModelIndex &index);
    void pressed(const QModelIndex &index);

protected:
    void resizeEvent (QResizeEvent *event) ;
    bool event (QEvent *event);

protected slots:
    void searchTermChanged(const QString &text);
    void filterChanged(int index);

private:
    void updateColumnsWidth(bool force = false);

private slots:
    void itemActivated(const QModelIndex &index);
    void itemDoubleClicked(const QModelIndex &index);
    void slotSearchTermChanged(const QString &term);

private:
    QStandardItemModel *m_modelCategories;
    QStandardItemModel *m_modelFilters;
    QStandardItemModel *m_modelItems;

    DefaultItemFilterProxyModel *m_modelFilterItems;
    KCategorizedItemsViewDelegate *m_delegate;

    int m_viewWidth;

    QMap < QString, QPair < Filter, QIcon > > m_emblems;
    AbstractItem *getItemByProxyIndex(const QModelIndex &index) const;

    friend class KCategorizedItemsViewDelegate;
    friend class CustomDragTreeView;
};

//Q_DECLARE_METATYPE(KCategorizedItemsView::Filter)

#endif
