package org.eclipse.jface.snippets.viewers;
import java.lang.reflect.Field;
import java.util.ArrayList;
import java.util.Arrays;
import org.eclipse.jface.action.Action;
import org.eclipse.jface.action.IMenuListener;
import org.eclipse.jface.action.IMenuManager;
import org.eclipse.jface.action.MenuManager;
import org.eclipse.jface.viewers.ArrayContentProvider;
import org.eclipse.jface.viewers.ITableLabelProvider;
import org.eclipse.jface.viewers.LabelProvider;
import org.eclipse.jface.viewers.TableViewer;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.MouseAdapter;
import org.eclipse.swt.events.MouseEvent;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.TableColumn;
public class Snippet018TableViewerSimplified {
public class Person {
public String givenname;
public String surname;
public String email;
public Person(String givenname, String surname, String email) {
this.givenname = givenname;
this.surname = surname;
this.email = email;
}
public String getValue(String name) {
Field field;
try {
field = getClass().getDeclaredField(name);
return (String) field.get(this);
} catch (Exception e) {
e.printStackTrace();
}
return "ERROR";
}
}
public class MyLabelProvider extends LabelProvider implements
ITableLabelProvider {
private TableViewer viewer;
public MyLabelProvider(TableViewer viewer) {
this.viewer = viewer;
}
public Image getColumnImage(Object element, int columnIndex) {
return null;
}
public String getColumnText(Object element, int columnIndex) {
return ((Person) element)
.getValue(viewer.getColumnProperties()[columnIndex]
.toString());
}
}
private int activeColumn = -1;
public Snippet018TableViewerSimplified(Shell shell) {
final TableViewer v = new TableViewer(shell, SWT.BORDER);
v.setLabelProvider(new MyLabelProvider(v));
v.setContentProvider(ArrayContentProvider.getInstance());
v.setColumnProperties(new String[] { "givenname", "surname" });
TableColumn column = new TableColumn(v.getTable(), SWT.NONE);
column.setWidth(200);
column.setText("Givenname");
column = new TableColumn(v.getTable(), SWT.NONE);
column.setWidth(200);
column.setText("Surname");
Person[] model = createModel();
v.setInput(model);
v.getTable().setLinesVisible(true);
v.getTable().setHeaderVisible(true);
addMenu(v);
triggerColumnSelectedColumn(v);
}
private void triggerColumnSelectedColumn(final TableViewer v) {
v.getTable().addMouseListener(new MouseAdapter() {
public void mouseDown(MouseEvent e) {
System.out.println("mouseDown");
int x = 0;
for (int i = 0; i < v.getTable().getColumnCount(); i++) {
x += v.getTable().getColumn(i).getWidth();
if (e.x <= x) {
activeColumn = i;
break;
}
}
}
});
}
private void addMenu(final TableViewer v) {
final MenuManager mgr = new MenuManager();
final Action insertEmailBefore = new Action("Insert E-Mail before") {
public void run() {
addEmailColumn(v, activeColumn);
}
};
final Action insertEmailAfter = new Action("Insert E-Mail after") {
public void run() {
addEmailColumn(v, activeColumn + 1);
}
};
final Action removeEmail = new Action("Remove E-Mail") {
public void run() {
removeEmailColumn(v);
}
};
mgr.setRemoveAllWhenShown(true);
mgr.addMenuListener(new IMenuListener() {
public void menuAboutToShow(IMenuManager manager) {
if (v.getTable().getColumnCount() == 2) {
manager.add(insertEmailBefore);
manager.add(insertEmailAfter);
} else {
manager.add(removeEmail);
}
}
});
v.getControl().setMenu(mgr.createContextMenu(v.getControl()));
}
private void removeEmailColumn(TableViewer v) {
int emailIndex = -1;
for (int i = 0; i < v.getColumnProperties().length; i++) {
if (v.getColumnProperties()[i].toString().equals("email")) {
emailIndex = i;
break;
}
}
ArrayList<Object> list = new ArrayList<Object>(Arrays.asList(v.getColumnProperties()));
list.remove(emailIndex);
String[] columnProperties = new String[list.size()];
list.toArray(columnProperties);
v.setColumnProperties(columnProperties);
v.getTable().getColumn(emailIndex).dispose();
v.refresh();
}
private void addEmailColumn(TableViewer v, int columnIndex) {
ArrayList<Object> list = new ArrayList<Object>(Arrays.asList(v.getColumnProperties()));
list.add(columnIndex, "email");
String[] columnProperties = new String[list.size()];
list.toArray(columnProperties);
v.setColumnProperties(columnProperties);
// 1. Add new column
TableColumn column = new TableColumn(v.getTable(), SWT.NONE,
columnIndex);
column.setText("E-Mail");
// 2. Update the viewer
v.refresh();
// 3. Make the column visible
column.setWidth(200);
}
private Person[] createModel() {
Person[] persons = new Person[3];
persons[0] = new Person("Tom", "Schindl", "tom.schindl@bestsolution.at");
persons[1] = new Person("Boris", "Bokowski",
"boris_bokowski@ca.ibm.com");
persons[2] = new Person("Tod", "Creasey", "tod_creasey@ca.ibm.com");
return persons;
}
/**
* @param args
*/
public static void main(String[] args) {
Display display = new Display();
Shell shell = new Shell(display);
shell.setLayout(new FillLayout());
new Snippet018TableViewerSimplified(shell);
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch())
display.sleep();
}
display.dispose();
}
}
