/*******************************************************************************
* Copyright (c) 2006, 2014 Tom Schindl and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Tom Schindl - initial API and implementation
* Jeanderson Candido <http://jeandersonbc.github.io> - Bug 414565
* Simon Scholz <simon.scholz@vogella.com> - Bug 448143
*******************************************************************************/
package org.eclipse.jface.snippets.viewers;
import java.lang.reflect.Field;
import java.util.Arrays;
import java.util.List;
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.CellEditor;
import org.eclipse.jface.viewers.ColumnLabelProvider;
import org.eclipse.jface.viewers.ColumnViewer;
import org.eclipse.jface.viewers.EditingSupport;
import org.eclipse.jface.viewers.TableViewer;
import org.eclipse.jface.viewers.TableViewerColumn;
import org.eclipse.jface.viewers.TextCellEditor;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.MouseAdapter;
import org.eclipse.swt.events.MouseEvent;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.TableColumn;
/**
* Example of adding and removing columns in conjunction with JFace-Viewers
*
* @author Tom Schindl <tom.schindl@bestsolution.at>
* @since 3.2
*/
public class Snippet018TableViewerAddRemoveColumnsWithEditing {
private static final String EMAIL = "email";
private static final String GIVENNAME = "givenname";
private static final String SURNAME = "surname";
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 void setValue(String name, String value) {
Field field;
try {
field = getClass().getDeclaredField(name);
field.set(this, value);
} catch (Exception e) {
e.printStackTrace();
}
}
}
public class MyLabelProvider extends ColumnLabelProvider
{
private String propertyName;
public MyLabelProvider(TableViewer viewer, String propertyName) {
this.propertyName = propertyName;
}
@Override
public String getText(Object element) {
return ((Person) element).getValue(propertyName);
}
}
private class MyEditingSupport extends EditingSupport{
private String property;
public MyEditingSupport(ColumnViewer viewer, String property) {
super(viewer);
this.property = property;
}
@Override
protected CellEditor getCellEditor(Object element) {
return new TextCellEditor((Composite) getViewer().getControl());
}
@Override
protected boolean canEdit(Object element) {
return true;
}
@Override
protected Object getValue(Object element) {
return ((Person) element).getValue(property);
}
@Override
protected void setValue(Object element, Object value) {
((Person) element).setValue(property,
value.toString());
getViewer().update(element, null);
}
}
private int activeColumn = -1;
private TableViewerColumn emailViewerColumn;
public Snippet018TableViewerAddRemoveColumnsWithEditing(Shell shell) {
final TableViewer v = new TableViewer(shell, SWT.BORDER
| SWT.FULL_SELECTION);
v.setContentProvider(ArrayContentProvider.getInstance());
TableColumn column = new TableColumn(v.getTable(), SWT.NONE);
column.setWidth(200);
column.setText("Givenname");
TableViewerColumn viewerColumn = new TableViewerColumn(v, column);
viewerColumn.setLabelProvider(new MyLabelProvider(v, GIVENNAME));
viewerColumn.setEditingSupport(new MyEditingSupport(v, GIVENNAME));
column = new TableColumn(v.getTable(), SWT.NONE);
column.setWidth(200);
column.setText("Surname");
TableViewerColumn viewerColumn2 = new TableViewerColumn(v, column);
viewerColumn2.setLabelProvider(new MyLabelProvider(v, SURNAME));
viewerColumn2.setEditingSupport(new MyEditingSupport(v, SURNAME));
v.setInput(createModel());
v.getTable().setLinesVisible(true);
v.getTable().setHeaderVisible(true);
addMenu(v);
triggerColumnSelectedColumn(v);
}
private void triggerColumnSelectedColumn(final TableViewer v) {
v.getTable().addMouseListener(new MouseAdapter() {
@Override
public void mouseDown(MouseEvent e) {
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") {
@Override
public void run() {
addEmailColumn(v, activeColumn);
}
};
final Action insertEmailAfter = new Action("Insert E-Mail after") {
@Override
public void run() {
addEmailColumn(v, activeColumn + 1);
}
};
final Action removeEmail = new Action("Remove E-Mail") {
@Override
public void run() {
removeEmailColumn(v);
}
};
mgr.setRemoveAllWhenShown(true);
mgr.addMenuListener(new IMenuListener() {
@Override
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) {
if (emailViewerColumn != null && !emailViewerColumn.getColumn().isDisposed()) {
emailViewerColumn.getColumn().dispose();
emailViewerColumn = null;
v.refresh();
}
}
private void addEmailColumn(TableViewer v, int columnIndex) {
// 1. Add new column
emailViewerColumn = new TableViewerColumn(v, SWT.NONE, columnIndex);
emailViewerColumn.getColumn().setText("E-Mail");
emailViewerColumn.setLabelProvider(new MyLabelProvider(v, EMAIL));
emailViewerColumn.setEditingSupport(new MyEditingSupport(v, EMAIL));
// 2. Update the viewer
v.refresh();
// 3. Make the colum visible
emailViewerColumn.getColumn().setWidth(300);
}
private List<Person> createModel() {
return Arrays.asList(new Person("Tom", "Schindl",
"tom.schindl@bestsolution.at"), new Person("Boris", "Bokowski",
"boris_bokowski@ca.ibm.com"), new Person("Tod", "Creasey",
"tod_creasey@ca.ibm.com"), new Person("Jeanderson", "Candido",
"jeandersonbc@gmail.com"), new Person("Lars", "Vogel",
"lars.vogel@vogella.com"), new Person("Hendrik", "Still", "hendrik.still@vogella.com"),
new Person("Simon", "Scholz", "simon.scholz@vogella.com"));
}
/**
* @param args
*/
public static void main(String[] args) {
Display display = new Display();
Shell shell = new Shell(display);
shell.setLayout(new FillLayout());
new Snippet018TableViewerAddRemoveColumnsWithEditing(shell);
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch())
display.sleep();
}
display.dispose();
}
}