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// Copyright (C) 2008  Lukas Lalinsky
//
// 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.,
// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

#include "tableproperties.h"
#include "databasetable.h"
#include "column.h"
#include <QCheckBox>
#include <QDebug>

TableProperties::TableProperties(QWidget *parent)
	: QWidget(parent)
{
	ui.setupUi(this);
	connect(ui.nameEdit,
		SIGNAL(textEdited(const QString &)),
		SLOT(setSelectedTableName(const QString &)));
	connect(ui.addColumnButton, SIGNAL(clicked()), ui.columnsWidget, SLOT(addColumn()));
	connect(ui.removeColumnButton, SIGNAL(clicked()), ui.columnsWidget, SLOT(removeColumn()));
	connect(ui.moveColumnUpButton, SIGNAL(clicked()), ui.columnsWidget, SLOT(moveColumnUp()));
	connect(ui.moveColumnDownButton, SIGNAL(clicked()), ui.columnsWidget, SLOT(moveColumnDown()));
	connect(ui.columnsWidget->selectionModel(),
		SIGNAL(selectionChanged(const QItemSelection &, const QItemSelection &)),
		SLOT(updateColumnSelection()));
}

void
TableProperties::setSelectedTableName(const QString &name)
{
	if (m_table) {
		m_table->setName(name);
	}
}

void
TableProperties::setTable(DatabaseTable *table)
{
	m_table = NULL;
	if (table == NULL) {
		setEnabled(false);
		ui.nameEdit->clear();
		ui.columnsWidget->setTable(table);
	}
	else {
		setEnabled(true);
		ui.nameEdit->setText(table->name());
		ui.columnsWidget->setTable(table);
	}
	m_table = table;
	updateColumnSelection();
}

void
TableProperties::updateColumnSelection()
{
	QList<int> columns = ui.columnsWidget->selectedColumns();
	if (columns.isEmpty()) {
		ui.removeColumnButton->setEnabled(false);
		ui.moveColumnUpButton->setEnabled(false);
		ui.moveColumnDownButton->setEnabled(false);
	}
	else {
		int index = columns[0];
		ui.removeColumnButton->setEnabled(true);
		ui.moveColumnUpButton->setEnabled(index > 0);
		ui.moveColumnDownButton->setEnabled(index + 1 < m_table->columnCount());
	}
}