TreeViewer 使用
import java.io.File;
import org.eclipse.jface.viewers.ILabelProviderListener;
import org.eclipse.jface.viewers.ITableLabelProvider;
import org.eclipse.jface.viewers.ITreeContentProvider;
import org.eclipse.jface.viewers.TreeViewer;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Tree;
import org.eclipse.swt.widgets.TreeColumn;
public class TreeColumnTest2 extends Shell {
private Tree tree;
/**
* Launch the application
* @param args
*/
public static void main(String args[]) {
try {
Display display = Display.getDefault();
TreeColumnTest2 shell = new TreeColumnTest2(display, SWT.SHELL_TRIM);
shell.open();
shell.layout();
while (!shell.isDisposed()) {
if (!display.readAndDispatch())
display.sleep();
}
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* Create the shell
* @param display
* @param style
*/
public TreeColumnTest2(Display display, int style) {
super(display, style);
createContents();
}
/**
* Create contents of the window
*/
protected void createContents() {
setText("SWT Application");
setSize(584, 375);
final TreeViewer viewer = new TreeViewer(this, SWT.FULL_SELECTION);
tree = viewer.getTree();
tree.setBounds(24, 10, 523, 300);
viewer.getTree().setHeaderVisible(true);
TreeColumn column = new TreeColumn(viewer.getTree(), SWT.LEFT);
column.setText("Name");
column.setWidth(200);
column = new TreeColumn(viewer.getTree(), SWT.LEFT);
column.setText("Size");
column.setWidth(100);
column = new TreeColumn(viewer.getTree(), SWT.LEFT);
column.setText("Hidden");
column.setWidth(100);
viewer.setContentProvider(new MyTreeContenetProvider());
viewer.setLabelProvider(new MyTableLableProvider());
viewer.setInput(new File("/"));
//
}
@Override
protected void checkSubclass() {
// Disable the check that prevents subclassing of SWT components
}
class MyTreeContenetProvider implements ITreeContentProvider {
public Object[] getChildren(Object parentElement) {
File file = (File) parentElement;
if (file.isDirectory())
return file.listFiles();
else
return null;
}
public Object getParent(Object element) {
System.err.println("调用没");
File file = (File) element;
// return file.getParentFile();
return null;
}
public boolean hasChildren(Object element) {
File file = (File) element;
return file.isDirectory()/*&&file.list().length>0*/;
}
public Object[] getElements(Object inputElement) {
File file = (File) inputElement;
return file.isDirectory() ? file.listFiles()
: new Object[] { file };
}
public void dispose() {
}
public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
}
}
class MyTableLableProvider implements ITableLabelProvider{
public Image getColumnImage(Object element, int columnIndex) {
return null;
}
public String getColumnText(Object element, int columnIndex) {
File file=(File)element;
switch (columnIndex) {
case 0:
return file.getName();
case 1:
return ""+file.length();
case 2:
return ""+file.isHidden();
default:
return "";
}
}
public void addListener(ILabelProviderListener listener) {
}
public void dispose() {
}
public boolean isLabelProperty(Object element, String property) {
return false;
}
public void removeListener(ILabelProviderListener listener) {
}
}
}