Mega Code Archive
Limit selection to items that match a pattern in SWT Tree
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/*
* Tree example snippet: limit selection to items that match a pattern
*
* For a list of all SWT example snippets see
* http://dev.eclipse.org/viewcvs/index.cgi/%7Echeckout%7E/platform-swt-home/dev.html#snippets
*/
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Tree;
import org.eclipse.swt.widgets.TreeItem;
public class Snippet80 {
public static void main(String[] args) {
final Display display = new Display();
final Shell shell = new Shell(display);
shell.setLayout(new FillLayout());
final Tree tree = new Tree(shell, SWT.BORDER | SWT.MULTI);
for (int i = 0; i < 2; i++) {
TreeItem item = new TreeItem(tree, SWT.NONE);
item.setText("item " + i);
for (int j = 0; j < 2; j++) {
TreeItem subItem = new TreeItem(item, SWT.NONE);
subItem.setText("item " + j);
for (int k = 0; k < 2; k++) {
TreeItem subsubItem = new TreeItem(subItem, SWT.NONE);
subsubItem.setText("item " + k);
}
}
}
tree.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent e) {
TreeItem[] selection = tree.getSelection();
TreeItem[] revisedSelection = new TreeItem[0];
for (int i = 0; i < selection.length; i++) {
String text = selection[i].getText();
if (text.indexOf("1") > 0) {
TreeItem[] newSelection = new TreeItem[revisedSelection.length + 1];
System.arraycopy(revisedSelection, 0, newSelection, 0,
revisedSelection.length);
newSelection[revisedSelection.length] = selection[i];
revisedSelection = newSelection;
}
}
tree.setSelection(revisedSelection);
}
});
shell.setSize(300, 300);
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch())
display.sleep();
}
display.dispose();
}
}
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