/*
Bellaciao: a Salut à Toi frontend
Copyright (C) 2011  Jérôme Poisson (goffi@goffi.org)

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 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 Affero General Public License for more details.

You should have received a copy of the GNU Affero General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

#ifndef LAYOUT_VIEW_H
#define LAYOUT_VIEW_H

#include <QWidget>
#include <QDragEnterEvent>
#include "layout_widget.h"

#define LAYOUT_WIDGET_MIME "application/x-bellaciao-widget"

typedef enum
{
    HORIZONTAL, VERTICAL
} LayoutDirection;

class WidgetView
{
    public:
        WidgetView(const QString& name);
        ~WidgetView();
};

class WidgetViewItem : public QLabel, public WidgetView
{
    Q_OBJECT
    public:
        WidgetViewItem(const QString& name);
};

class WidgetViewBox : public QScrollArea, public WidgetView
{
    Q_OBJECT
    public:
        WidgetViewBox(const QString& name);
};

class LayoutView : public QWidget
{
    Q_OBJECT

    public:
        LayoutView(QWidget* parent = 0, LayoutDirection direction = VERTICAL);
        ~LayoutView();
        void setLayoutWidgets(const QHash<QString, LayoutWidget*>& layout_widgets);
        void dragEnterEvent (QDragEnterEvent* event );
        void dragLeaveEvent (QDragLeaveEvent* event );
        void dragMoveEvent (QDragMoveEvent* event );
        void dropEvent (QDropEvent * event);
    protected:
        void addWidget(const QString& name);
        void paintEvent(QPaintEvent* event);
    private:
        QHash<QString, LayoutWidget*> m_layout_widgets;
        QList<LayoutWidget> m_widgets_list;
        QBoxLayout* m_layout;
        QRect m_loc_hint;
        int m_insert_pos; //position in the layout when a widget must be inserted
        LayoutDirection m_direction;
};

#endif