File: mergedvfsmodel.cpp

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/***************************************************************************
 *   Copyright Simon Persson                                               *
 *   simonpersson1@gmail.com                                               *
 *                                                                         *
 *   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.,                                       *
 *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
 ***************************************************************************/

#include "mergedvfsmodel.h"
#include "mergedvfs.h"
#include "vfshelpers.h"

#include <KIO/Global>
#include <KIconLoader>
#include <QPixmap>

MergedVfsModel::MergedVfsModel(MergedRepository *pRoot, QObject *pParent) :
   QAbstractItemModel(pParent), mRoot(pRoot)
{
}

int MergedVfsModel::columnCount(const QModelIndex &pParent) const {
	Q_UNUSED(pParent)
	return 1;
}

QVariant MergedVfsModel::data(const QModelIndex &pIndex, int pRole) const {
	if(!pIndex.isValid()) {
		return QVariant();
	}
	MergedNode *lNode = static_cast<MergedNode *>(pIndex.internalPointer());
	switch (pRole) {
	case Qt::DisplayRole:
		return lNode->objectName();
	case Qt::DecorationRole:
		return KIconLoader::global()->loadMimeTypeIcon(
		         KIO::iconNameForUrl(QUrl::fromLocalFile(lNode->objectName())),
		         KIconLoader::Small);
	default:
		return QVariant();
	}
}

QModelIndex MergedVfsModel::index(int pRow, int pColumn, const QModelIndex &pParent) const {
	if(pColumn != 0 || pRow < 0) {
		return QModelIndex(); // invalid
	}
	if(!pParent.isValid()) {
		if(pRow >= mRoot->subNodes().count()) {
			return QModelIndex(); // invalid
		}
		return createIndex(pRow, 0, mRoot->subNodes().at(pRow));
	}
	MergedNode *lParentNode = static_cast<MergedNode *>(pParent.internalPointer());
	if(pRow >= lParentNode->subNodes().count()) {
		return QModelIndex(); // invalid
	}
	return createIndex(pRow, 0, lParentNode->subNodes().at(pRow));
}

QModelIndex MergedVfsModel::parent(const QModelIndex &pChild) const {
	if(!pChild.isValid()) {
		return QModelIndex();
	}
	MergedNode *lChild = static_cast<MergedNode *>(pChild.internalPointer());
	MergedNode *lParent = qobject_cast<MergedNode *>(lChild->parent());
	if(lParent == NULL || lParent == mRoot) {
		return QModelIndex(); //invalid
	}
	MergedNode *lGrandParent = qobject_cast<MergedNode *>(lParent->parent());
	if(lGrandParent == NULL) {
		return QModelIndex(); //invalid
	}
	return createIndex(lGrandParent->subNodes().indexOf(lParent), 0, lParent);
}

int MergedVfsModel::rowCount(const QModelIndex &pParent) const {
	if(!pParent.isValid()) {
		return mRoot->subNodes().count();
	}
	MergedNode *lParent = static_cast<MergedNode *>(pParent.internalPointer());
	if(lParent == NULL) {
		return 0;
	}
	return lParent->subNodes().count();
}

const VersionList *MergedVfsModel::versionList(const QModelIndex &pIndex) {
	MergedNode *lNode = static_cast<MergedNode *>(pIndex.internalPointer());
	return lNode->versionList();
}

const MergedNode *MergedVfsModel::node(const QModelIndex &pIndex) {
	return static_cast<MergedNode *>(pIndex.internalPointer());
}