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/*
* Copyright (c) 2009 Samit Basu
*
* 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 <QtGui>
#include "DataTable.hpp"
DataTable::DataTable(const QStringList &column_names) :
QAbstractTableModel(), m_colnames(column_names) {
m_icons["dir"] = qApp->style()->standardIcon(QStyle::SP_DirIcon);
m_icons["file"] = qApp->style()->standardIcon(QStyle::SP_FileIcon);
}
int DataTable::rowCount(const QModelIndex&) const {
return m_data.size();
}
int DataTable::columnCount(const QModelIndex&) const {
return m_colnames.size();
}
void DataTable::loadData(const QList<QVariant> & data) {
m_data = data;
emit layoutChanged();
}
QVariant DataTable::headerData(int section, Qt::Orientation orientation, int role) const {
if (role != Qt::DisplayRole) return QVariant();
if (orientation != Qt::Horizontal) return QVariant();
if (section < m_colnames.size())
return m_colnames[section];
return QVariant();
}
QVariant DataTable::data(const QModelIndex &index, int role) const {
if ((role == Qt::DecorationRole) && (index.column() == 1)) {
int row = index.row();
QList<QVariant> md(m_data[row].toList());
if (md.size() > 0)
return QVariant(m_icons[md[0].toString()]);
else
return QVariant();
}
if (role != Qt::DisplayRole)
return QVariant();
int row = index.row();
int col = index.column();
if ((row >= 0) && (row < m_data.size())) {
QList<QVariant> md(m_data[row].toList());
if ((col >= 0) && (col < md.size()))
return md[col];
return QVariant();
}
return QVariant();
}
template <typename T>
QList<QVariant> SubsortByFirstColumn(const QMultiMap<T,QVariant> &map) {
// Get the list of all keys
QList<T> keys = map.uniqueKeys();
QList<QVariant> result;
// Loop over the keys..
for (int i=0;i<keys.size();i++) {
// Get a list of the values for this key
QList<QVariant> valset = map.values(keys[i]);
// Resort this list by the entry of the first column
QMultiMap<QString,QVariant> submap;
for (int i=0;i<valset.size();i++)
submap.insert(valset[i].toList()[1].toString().toUpper(),valset[i]);
result += submap.values();
}
return result;
}
void DataTable::sort(int column, Qt::SortOrder order) {
if (m_data.size() == 0) return;
// Determine the type of the data for this column
QList<QVariant> row(m_data[0].toList());
if (column >= row.size()) return;
switch(row[column].type()) {
case QVariant::Int:
case QVariant::Double:
{
QMultiMap<double,QVariant> map;
for (int i=0;i<m_data.size();i++)
map.insert(m_data[i].toList()[column].toDouble(),m_data[i]);
// We want to subsort by the contents of column 1 (which must be
// a string
m_data = SubsortByFirstColumn(map);
break;
}
case QVariant::String:
{
QMultiMap<QString,QVariant> map;
for (int i=0;i<m_data.size();i++)
map.insert(m_data[i].toList()[column].toString(),m_data[i]);
m_data = SubsortByFirstColumn(map);
break;
}
case QVariant::DateTime:
{
QMultiMap<QDateTime,QVariant> map;
for (int i=0;i<m_data.size();i++)
map.insert(m_data[i].toList()[column].toDateTime(),m_data[i]);
m_data = SubsortByFirstColumn(map);
break;
}
default:
return;
}
if (order == Qt::DescendingOrder) {
QList<QVariant> tmp;
for (int i=0;i<m_data.size();i++)
tmp.push_back(m_data[m_data.size()-1-i]);
m_data = tmp;
}
emit layoutChanged();
}
QVariant mkStats(bool flag, QString nm, int minv, int maxv) {
QList<QVariant> ret;
if (flag)
ret.push_back(QVariant(qApp->style()->standardPixmap(QStyle::SP_FileIcon)));
else
ret.push_back(QVariant(qApp->style()->standardPixmap(QStyle::SP_DirIcon)));
ret.push_back(QVariant(nm));
ret.push_back(QVariant(minv));
ret.push_back(QVariant(maxv));
return QVariant(ret);
}
void DataView::loadSettings(QSettings *set, QString tagname, QVector<int> default_cols) {
int n = model()->columnCount();
QList<QVariant> hidden(set->value(tagname+"/hidden").toList());
QList<QVariant> widths(set->value(tagname+"/widths").toList());
if ((hidden.size() >= n) || (widths.size() >= n)) {
for (int i=0;i<n;i++)
setColumnHidden(i,hidden[i].toBool());
for (int i=0;i<n;i++)
setColumnWidth(i,widths[i].toInt());
} else {
for (int i=0;i<n;i++)
setColumnHidden(i,true);
for (int i=0;i<default_cols.size();i++)
setColumnHidden(default_cols[i],false);
}
((DataHeaderView*)header())->initializeFieldChooser();
}
void DataView::saveSettings(QSettings *set, QString tagname) {
int n = model()->columnCount();
QList<QVariant> hidden;
for (int i=0;i<n;i++)
hidden.push_back(QVariant(isColumnHidden(i)));
set->setValue(tagname + "/hidden",hidden);
QList<QVariant> widths;
for (int i=0;i<n;i++)
widths.push_back(QVariant(columnWidth(i)));
set->setValue(tagname + "/widths",widths);
}
void DataHeaderView::setColumnHidden(int col, bool stat) {
if(col <= 1) return;
m_fields[col-2]->setChecked(!stat);
}
void DataHeaderView::initializeFieldChooser() {
int col = model()->columnCount();
m_fields = new QAction*[col-2]; // two columns do not show up -- name & dirflag
m_popup = new QMenu;
for (int i=2;i<col;i++) {
m_fields[i-2] = new QAction(model()->headerData(i,Qt::Horizontal).toString(),this);
m_fields[i-2]->setCheckable(true);
m_fields[i-2]->setChecked(!isSectionHidden(i));
connect(m_fields[i-2],SIGNAL(toggled(bool)),this,SLOT(updateChecked(bool)));
m_popup->addAction(m_fields[i-2]);
}
}
void DataHeaderView::contextMenuEvent(QContextMenuEvent *e) {
m_popup->exec(e->globalPos());
}
void DataHeaderView::updateChecked(bool) {
for (int i=2;i<model()->columnCount();i++) {
bool vis = m_fields[i-2]->isChecked();
m_dview->setColumnHidden(i,!vis);
if (((QTreeView*)m_dview)->columnWidth(i) < 50)
m_dview->setColumnWidth(i,50);
}
}
void DataView::setModel(QAbstractItemModel *m) {
QTreeView::setModel(m);
m_header = new DataHeaderView(Qt::Horizontal,this);
m_header->setMovable(true);
m_header->setStretchLastSection(true);
m_header->setDefaultAlignment(Qt::AlignLeft|Qt::AlignVCenter);
m_header->setModel(m);
m_header->initializeFieldChooser();
setHeader(m_header);
setSortingEnabled(true);
setItemsExpandable(false);
setRootIsDecorated(false);
}
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