/*******************************************************************************
* Copyright (c) 2009 STMicroelectronics.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Marzia Maugeri <marzia.maugeri@st.com> - initial API and implementation
*******************************************************************************/
package org.eclipse.linuxtools.dataviewers.listeners;
import org.eclipse.linuxtools.dataviewers.abstractviewers.AbstractSTViewer;
import org.eclipse.linuxtools.dataviewers.abstractviewers.ISTDataViewersField;
import org.eclipse.linuxtools.dataviewers.abstractviewers.STDataViewersComparator;
import org.eclipse.swt.custom.BusyIndicator;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.events.SelectionListener;
import org.eclipse.swt.widgets.Item;
/**
* Handles the case of user selecting the header area.
*/
public class STHeaderListener implements SelectionListener {
private AbstractSTViewer stViewer;
public STHeaderListener(AbstractSTViewer stViewer) {
this.stViewer = stViewer;
}
@Override
public void widgetDefaultSelected(SelectionEvent e) {
widgetSelected(e);
}
@Override
public void widgetSelected(SelectionEvent e) {
final Item column = (Item) e.widget;
final ISTDataViewersField field = (ISTDataViewersField) column.getData();
resortTable(column, field);
}
/**
* Resort the table based on field.
*
* @param column
* the column being updated
* @param field
*/
private void resortTable(final Item column, final ISTDataViewersField field) {
STDataViewersComparator sorter = stViewer.getTableSorter();
if (column.equals(sorter.getTopColumn())) {
sorter.reverseTopPriority();
} else {
sorter.setTopPriority(column, field);
}
BusyIndicator.showWhile(null, () -> {
stViewer.getViewer().refresh();
stViewer.updateDirectionIndicator(column);
});
}
}