creator/plugins/tools/objectinspector/qobjecttreemodel.cpp

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/******************************************************************************
 * This file is part of the Gluon Development Platform
 * Copyright (c) 2010 Arjen Hiemstra <ahiemstra@heimr.nl>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 */

#include "qobjecttreemodel.h"
#include <QDebug>
#include <typeinfo>
#include <gluon/gluonobject.h>

using namespace Gluon::Creator;

QObjectTreeModel::QObjectTreeModel( QObject* root, QObject* parent ): QAbstractItemModel( parent )
{
    m_root = new QObject( this );
    root->setParent( m_root );
}

QVariant QObjectTreeModel::data( const QModelIndex& index, int role ) const
{
    if( !index.isValid() )
        return QVariant();

    if( role != Qt::DisplayRole )
        return QVariant();

    QObject* item = static_cast<QObject*>( index.internalPointer() );

    switch( index.column() )
    {
        case 0:
        {
            Gluon::GluonObject* gobj = qobject_cast<Gluon::GluonObject*>( item );
            if( gobj ) return gobj->name();
            return item->objectName();
            break;
        }
        case 1:
            return item->metaObject()->className();
            break;
        default:
            return QVariant();
    }
}

int QObjectTreeModel::columnCount( const QModelIndex& ) const
{
    return 2;
}

int QObjectTreeModel::rowCount( const QModelIndex& parent ) const
{
    QObject* parentItem;
    if( parent.column() > 0 )
        return 0;

    if( !parent.isValid() )
        parentItem = m_root;
    else
        parentItem = static_cast<QObject*>( parent.internalPointer() );

    return parentItem->children().count();
}

QModelIndex QObjectTreeModel::parent( const QModelIndex& child ) const
{
    if( !child.isValid() )
        return QModelIndex();

    QObject* childItem = static_cast<QObject*>( child.internalPointer() );
    QObject* parentItem = childItem->parent();

    if( parentItem == m_root )
        return QModelIndex();

    return createIndex( rowIndex( parentItem ), 0, parentItem );
}

QModelIndex QObjectTreeModel::index( int row, int column, const QModelIndex& parent ) const
{
    if( !hasIndex( row, column, parent ) )
        return QModelIndex();

    QObject* parentItem;

    if( !parent.isValid() )
        parentItem = m_root;
    else
        parentItem = static_cast<QObject*>( parent.internalPointer() );

    QObject* childItem = parentItem->children().at( row );
    if( childItem )
        return createIndex( row, column, childItem );
    else
        return QModelIndex();
}

QVariant QObjectTreeModel::headerData( int section, Qt::Orientation orientation, int role ) const
{
    if( orientation == Qt::Horizontal && role == Qt::DisplayRole )
    {
        switch( section )
        {
            case 0:
                return QVariant( "Name" );
                break;
            case 1:
                return QVariant( "Type" );
                break;
            default:
                return QVariant();
        }
    }

    return QVariant();
}

int QObjectTreeModel::rowIndex( QObject* object ) const
{
    if( object->parent() )
    {
        return object->parent()->children().indexOf( object );
    }
    return 0;
}

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