Table of Contents
In part three of this tutorial we add a widget to filter the list of issues. This
widget is a simple JTextField and is inspired by a similar
widget found in Apple iTunes. As the user
types text into the field, only rows that contain that text are shown. This is a fast
and easy way to find a needle in a haystack!
To add filtering to our issues browser, we first need to access the filter text
for each list element. We can do this by implementing either the
TextFilterable interface or the
TextFilterator interface. TextFilterable
requires the filtered objects to include the method getFilterStrings().
Alternatively, the Filterator interface can be used to externally
specify filter strings. For our issues browser, we will implement TextFilterator
for our Issue class.
import java.util.List; // glazed lists import ca.odell.glazedlists.TextFilterator; // a simple issues library import ca.odell.issuezilla.*; /** * Get the Strings to filter against for a given Issue. * * @author <a href="mailto:jesse@odel.on.ca">Jesse Wilson</a> */ public class IssueTextFilterator implements TextFilterator { public void getFilterStrings(List baseList, Object element) { Issue issue = (Issue)element; baseList.add(issue.getComponent()); baseList.add(issue.getIssueType()); baseList.add(issue.getOperatingSystem()); baseList.add(issue.getResolution()); baseList.add(issue.getShortDescription()); baseList.add(issue.getStatus()); baseList.add(issue.getSubcomponent()); baseList.add(issue.getVersion()); } }