How to Display Image in SWT TableColumn Sortable Column [message #1798238] |
Wed, 14 November 2018 15:13 |
Robin Clark Messages: 5 Registered: November 2017 |
Junior Member |
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I want to display an image in a table column header. The problem that I have is that the image disappears when the column is sorted. I am working in a Windows 10 Pro. I am using the following version of eclipse:
Eclipse for RCP and RAP Developers
Version: Oxygen.3a Release (4.7.3a)
Build id: 20180405-1200
I am having troubles finding examples of implementing a custom drawn tablecolumn header that allows for images to be displayed along with the sorting icon.
Ideally I would like to display the image on the right side of the column instead of on the left.
Any help would be appreciated.
import java.text.Collator;
import java.util.Locale;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Table;
import org.eclipse.swt.widgets.TableColumn;
import org.eclipse.swt.widgets.TableItem;
public class RobinTest2 {
public static void main(String[] args) {
Display display = new Display();
Shell shell = new Shell(display);
shell.setLayout(new FillLayout());
final Table table = new Table(shell, SWT.BORDER);
table.setHeaderVisible(true);
final TableColumn column1 = new TableColumn(table, SWT.NONE);
column1.setText("Column 1");
final Image image = display.getSystemImage(SWT.ICON_QUESTION);
column1.setImage(image);
final TableColumn column2 = new TableColumn(table, SWT.NONE);
column2.setImage(image);
column2.setText("Column 2");
TableItem item = new TableItem(table, SWT.NONE);
item.setText(new String[] { "a", "3" });
item = new TableItem(table, SWT.NONE);
item.setText(new String[] { "b", "2" });
item = new TableItem(table, SWT.NONE);
item.setText(new String[] { "c", "1" });
column1.setWidth(100);
column2.setWidth(100);
Listener sortListener = e -> {
TableItem[] items = table.getItems();
Collator collator = Collator.getInstance(Locale.getDefault());
TableColumn column = (TableColumn) e.widget;
int index = column == column1 ? 0 : 1;
for (int i = 1; i < items.length; i++) {
String value1 = items[i].getText(index);
for (int j = 0; j < i; j++) {
String value2 = items[j].getText(index);
if (collator.compare(value1, value2) < 0) {
String[] values = { items[i].getText(0), items[i].getText(1) };
items[i].dispose();
TableItem item1 = new TableItem(table, SWT.NONE, j);
item1.setText(values);
items = table.getItems();
break;
}
}
}
table.setSortColumn(column);
};
column1.addListener(SWT.Selection, sortListener);
column2.addListener(SWT.Selection, sortListener);
table.setSortColumn(column1);
table.setSortDirection(SWT.UP);
shell.setSize(shell.computeSize(SWT.DEFAULT, SWT.DEFAULT).x, 300);
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch())
display.sleep();
}
display.dispose();
}
}
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