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/*
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.
*/
#include "smtreemodel.h"
#include "smtreeitem.h"
SmTreeModel::SmTreeModel(const QStringList &headers, QObject *parent) : QAbstractItemModel(parent), mRootItem(0){
mHeaders = headers;
mRootItem = new SmTreeItem(headers.count());
}
SmTreeModel::~SmTreeModel(){
delete mRootItem;
}
int SmTreeModel::rowCount(const QModelIndex &parent) const{
SmTreeItem *parentItem = itemAt(parent);
return parentItem->childCount();
}
int SmTreeModel::columnCount(const QModelIndex &parent) const{
Q_UNUSED(parent);
return mRootItem->columnCount();
}
QModelIndex SmTreeModel::index(int row, int column, const QModelIndex &parent) const{
if(parent.isValid() && (parent.column() != 0)){
return QModelIndex();
}
SmTreeItem *parentItem = itemAt(parent);
SmTreeItem *childItem = parentItem->child(row);
if(childItem){
return createIndex(row, column, childItem);
}
return QModelIndex();
}
Qt::ItemFlags SmTreeModel::flags(const QModelIndex &index) const{
if(!index.isValid()){
return 0;
}
return Qt::ItemIsEditable | Qt::ItemIsEnabled | Qt::ItemIsSelectable;
}
QVariant SmTreeModel::headerData(int section, Qt::Orientation orientation, int role) const{
if((orientation == Qt::Horizontal) && (role == Qt::DisplayRole)){
return mRootItem->data(section);
}
return QVariant();
}
bool SmTreeModel::setHeaderData(int section, Qt::Orientation orientation, const QVariant &value, int role){
if((orientation == Qt::Horizontal) && (role == Qt::DisplayRole)){
mRootItem->setData(section, value);
emit headerDataChanged(orientation, section, section);
return true;
}
return false;
}
QVariant SmTreeModel::data(const QModelIndex &index, int role) const{
if(!index.isValid()){
return QVariant();
}
SmTreeItem *item = itemAt(index);
if(role == Qt::DisplayRole){
return item->data(index.column());
}
if(role == Qt::EditRole){
return item->data(index.column());
}
return QVariant();
}
bool SmTreeModel::setData(const QModelIndex &index, const QVariant &value, int role){
if(role != Qt::EditRole){
return false;
}
SmTreeItem *item = itemAt(index);
item->setData(index.column(), value);
emit dataChanged(index, index);
return true;
}
bool SmTreeModel::setRoot(SmTreeItem *rootItem){
if(mRootItem){
beginResetModel();
delete mRootItem;
mRootItem = rootItem;
endResetModel();
return true;
}
return false;
}
bool SmTreeModel::insertRows(int row, int count, const QModelIndex &parent){
SmTreeItem *parentItem = itemAt(parent);
bool retval;
if(row > parentItem->childCount()){
return false;
}
beginInsertRows(parent, row, row + count - 1);
for(int i = row; i < row + count; ++i){
SmTreeItem *newItem = new SmTreeItem(mRootItem->columnCount());
retval = parentItem->insertChild(i, newItem);
}
endInsertRows();
return retval;
}
bool SmTreeModel::removeRows(int row, int count, const QModelIndex &parent){
SmTreeItem *parentItem = itemAt(parent);
bool retval;
if(row > parentItem->childCount()){
return false;
}
beginRemoveRows(parent, row, row + count - 1);
for(int i = row + count; i > row; --i){
retval = parentItem->removeChild(i);
}
endRemoveRows();
return retval;
}
bool SmTreeModel::addRow(const QList<QVariant> &data, const QModelIndex &parent){
if(data.count() != mRootItem->columnCount()){
return false;
}
SmTreeItem *parentItem = itemAt(parent);
if(insertRows(parentItem->childCount(), 1, parent)){
SmTreeItem *child = parentItem->child(parentItem->childCount());
delete child;
SmTreeItem *newChild = new SmTreeItem(data, parentItem);
child = newChild;
QModelIndex start = index(parentItem->childCount() - 1, 0, parent);
QModelIndex end = index(parentItem->childCount() - 1, parentItem->columnCount() - 1, parent);
emit dataChanged(start, end);
return true;
}
return false;
}
SmTreeItem *SmTreeModel::itemAt(const QModelIndex &index) const{
if(index.isValid()){
SmTreeItem *item = static_cast<SmTreeItem*>(index.internalPointer());
if(item){
return item;
}
}
return mRootItem;
}
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