package name.abuchen.portfolio.ui.dialogs;
import java.util.List;
import java.util.regex.Pattern;
import org.eclipse.jface.dialogs.Dialog;
import org.eclipse.jface.layout.GridDataFactory;
import org.eclipse.jface.layout.GridLayoutFactory;
import org.eclipse.jface.layout.TableColumnLayout;
import org.eclipse.jface.viewers.ArrayContentProvider;
import org.eclipse.jface.viewers.ColumnWeightData;
import org.eclipse.jface.viewers.DoubleClickEvent;
import org.eclipse.jface.viewers.IDoubleClickListener;
import org.eclipse.jface.viewers.ISelectionChangedListener;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.LabelProvider;
import org.eclipse.jface.viewers.SelectionChangedEvent;
import org.eclipse.jface.viewers.TableViewer;
import org.eclipse.jface.viewers.TableViewerColumn;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.jface.viewers.ViewerComparator;
import org.eclipse.jface.viewers.ViewerFilter;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.ModifyEvent;
import org.eclipse.swt.events.ModifyListener;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Table;
import org.eclipse.swt.widgets.Text;
public class ListSelectionDialog extends Dialog
{
public class ElementFilter extends ViewerFilter
{
private Pattern filterPattern;
public void setSearchPattern(String pattern)
{
if (pattern != null)
filterPattern = Pattern.compile(".*" + pattern + ".*", Pattern.CASE_INSENSITIVE); //$NON-NLS-1$ //$NON-NLS-2$
else
filterPattern = null;
}
@Override
public boolean select(Viewer viewer, Object parentElement, Object element)
{
if (filterPattern == null)
return true;
String text = labelProvider.getText(element);
if (text == null)
return false;
return filterPattern.matcher(text).matches();
}
}
private LabelProvider labelProvider;
private String title;
private String message = ""; //$NON-NLS-1$
private Object[] elements;
private Object[] selected;
private TableViewer tableViewer;
private ElementFilter elementFilter;
private Text searchText;
public ListSelectionDialog(Shell parentShell, LabelProvider labelProvider)
{
super(parentShell);
this.labelProvider = labelProvider;
}
public void setTitle(String title)
{
this.title = title;
}
public void setMessage(String message)
{
this.message = message;
}
public void setElements(List<?> elements)
{
this.elements = elements.toArray();
}
public Object[] getResult()
{
return selected;
}
@Override
protected void setShellStyle(int newShellStyle)
{
super.setShellStyle(newShellStyle | SWT.RESIZE);
}
@Override
protected Control createContents(Composite parent)
{
Control contents = super.createContents(parent);
getShell().setText(title);
return contents;
}
@Override
protected Control createDialogArea(Composite parent)
{
Composite composite = (Composite) super.createDialogArea(parent);
Composite container = new Composite(composite, SWT.None);
GridDataFactory.fillDefaults().grab(true, true).hint(400, 300).applyTo(container);
GridLayoutFactory.fillDefaults().numColumns(1).applyTo(container);
Label label = new Label(container, SWT.None);
label.setText(this.message);
GridDataFactory.fillDefaults().grab(true, false).applyTo(label);
searchText = new Text(container, SWT.BORDER);
GridDataFactory.fillDefaults().grab(true, false).applyTo(searchText);
searchText.setFocus();
Composite tableArea = new Composite(container, SWT.NONE);
GridDataFactory.fillDefaults().grab(false, true).applyTo(tableArea);
tableArea.setLayout(new FillLayout());
TableColumnLayout layout = new TableColumnLayout();
tableArea.setLayout(layout);
elementFilter = new ElementFilter();
tableViewer = new TableViewer(tableArea, SWT.BORDER | SWT.FULL_SELECTION | SWT.MULTI);
final Table table = tableViewer.getTable();
table.setHeaderVisible(false);
table.setLinesVisible(false);
TableViewerColumn column = new TableViewerColumn(tableViewer, SWT.None);
layout.setColumnData(column.getColumn(), new ColumnWeightData(100));
tableViewer.setLabelProvider(labelProvider);
tableViewer.setContentProvider(ArrayContentProvider.getInstance());
tableViewer.addFilter(elementFilter);
tableViewer.setInput(elements);
tableViewer.setComparator(new ViewerComparator());
hookListener();
return composite;
}
private void hookListener()
{
tableViewer.addSelectionChangedListener(new ISelectionChangedListener()
{
@Override
public void selectionChanged(SelectionChangedEvent event)
{
selected = ((IStructuredSelection) event.getSelection()).toArray();
}
});
tableViewer.addDoubleClickListener(new IDoubleClickListener()
{
@Override
public void doubleClick(DoubleClickEvent event)
{
selected = ((IStructuredSelection) event.getSelection()).toArray();
okPressed();
}
});
searchText.addModifyListener(new ModifyListener()
{
@Override
public void modifyText(ModifyEvent e)
{
String pattern = searchText.getText().trim();
if (pattern.length() == 0)
{
elementFilter.setSearchPattern(null);
tableViewer.refresh();
}
else
{
elementFilter.setSearchPattern(pattern);
tableViewer.refresh();
}
}
});
}
}