Java by API/org.eclipse.jface.viewers/ICellModifier

implements ICellModifier

import java.util.ArrayList;
import java.util.List;
import org.eclipse.jface.viewers.CellEditor;
import org.eclipse.jface.viewers.CheckboxCellEditor;
import org.eclipse.jface.viewers.ColorCellEditor;
import org.eclipse.jface.viewers.ruboBoxCellEditor;
import org.eclipse.jface.viewers.ICellModifier;
import org.eclipse.jface.viewers.ILabelProviderListener;
import org.eclipse.jface.viewers.IStructuredContentProvider;
import org.eclipse.jface.viewers.ITableLabelProvider;
import org.eclipse.jface.viewers.TableViewer;
import org.eclipse.jface.viewers.TextCellEditor;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.jface.window.ApplicationWindow;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.graphics.RGB;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.ruposite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Item;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Table;
import org.eclipse.swt.widgets.TableColumn;
public class MainClass extends ApplicationWindow {
  public static final String NAME = "Name";
  public static final String MALE = "Male?";
  public static final String AGE = "Age Range";
  public static final String SHIRT_COLOR = "Shirt Color";
  public static final String[] PROPS = { NAME, MALE, AGE, SHIRT_COLOR};
  private java.util.List studentList= new ArrayList();
  public MainClass() {
    super(null);
    setBlockOnOpen(true);
    open();
    Display.getCurrent().dispose();
  }
  protected void configureShell(Shell shell) {
    super.configureShell(shell);
    shell.setText("Person Editor");
    shell.setSize(400, 400);
  }
  protected Control createContents(Composite parent) {
    Composite composite = new Composite(parent, SWT.NONE);
    composite.setLayout(new GridLayout(1, false));
    Button newPerson = new Button(composite, SWT.PUSH);
    newPerson.setText("Create New Person");
    final TableViewer tv = new TableViewer(composite, SWT.FULL_SELECTION);
    tv.setContentProvider(new PersonContentProvider());
    tv.setLabelProvider(new StudentLabelProvider());
    tv.setInput(studentList);
    Table table = tv.getTable();
    table.setLayoutData(new GridData(GridData.FILL_BOTH));
    new TableColumn(table, SWT.CENTER).setText(NAME);
    new TableColumn(table, SWT.CENTER).setText(MALE);
    new TableColumn(table, SWT.CENTER).setText(AGE);
    new TableColumn(table, SWT.CENTER).setText(SHIRT_COLOR);
    for (int i = 0, n = table.getColumnCount(); i < n; i++) {
      table.getColumn(i).pack();
    }
    table.setHeaderVisible(true);
    table.setLinesVisible(true);
    newPerson.addSelectionListener(new SelectionAdapter() {
      public void widgetSelected(SelectionEvent event) {
        Student p = new Student();
        p.setName("Name");
        p.setMale(true);
        p.setAgeRange(Integer.valueOf("0"));
        p.setShirtColor(new RGB(255, 0, 0));
        studentList.add(p);
        tv.refresh();
      }
    });
    CellEditor[] editors = new CellEditor[4];
    editors[0] = new TextCellEditor(table);
    editors[1] = new CheckboxCellEditor(table);
    editors[2] = new ComboBoxCellEditor(table, AgeRange.INSTANCES, SWT.READ_ONLY);
    editors[3] = new ColorCellEditor(table);
    tv.setColumnProperties(PROPS);
    tv.setCellModifier(new StudentCellModifier(tv));
    tv.setCellEditors(editors);
    return composite;
  }
  public static void main(String[] args) {
    new MainClass();
  }
}
class StudentCellModifier implements ICellModifier {
  private Viewer viewer;
  public StudentCellModifier(Viewer viewer) {
    this.viewer = viewer;
  }
  public boolean canModify(Object element, String property) {
    return true;
  }
  public Object getValue(Object element, String property) {
    Student p = (Student) element;
    if (MainClass.NAME.equals(property))
      return p.getName();
    else if (MainClass.MALE.equals(property))
      return Boolean.valueOf(p.isMale());
    else if (MainClass.AGE.equals(property))
      return p.getAgeRange();
    else if (MainClass.SHIRT_COLOR.equals(property))
      return p.getShirtColor();
    else
      return null;
  }
  public void modify(Object element, String property, Object value) {
    if (element instanceof Item) element = ((Item) element).getData();
    Student p = (Student) element;
    if (MainClass.NAME.equals(property))
      p.setName((String) value);
    else if (MainClass.MALE.equals(property))
      p.setMale(((Boolean) value).booleanValue());
    else if (MainClass.AGE.equals(property))
      p.setAgeRange((Integer) value);
    else if (MainClass.SHIRT_COLOR.equals(property))
        p.setShirtColor((RGB) value);
    viewer.refresh();
  }
}
class PersonContentProvider implements IStructuredContentProvider {
  public Object[] getElements(Object inputElement) {
    return ((List) inputElement).toArray();
  }
  public void dispose() {
  }
  public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
  }
}
class Student {
  private String name;
  private boolean male;
  private Integer ageRange;
  private RGB shirtColor;
  public Integer getAgeRange() {
    return ageRange;
  }
  public void setAgeRange(Integer ageRange) {
    this.ageRange = ageRange;
  }
  public boolean isMale() {
    return male;
  }
  public void setMale(boolean male) {
    this.male = male;
  }
  public String getName() {
    return name;
  }
  public void setName(String name) {
    this.name = name;
  }
  public RGB getShirtColor() {
    return shirtColor;
  }
  public void setShirtColor(RGB shirtColor) {
    this.shirtColor = shirtColor;
  }
}
class StudentLabelProvider implements ITableLabelProvider {
  public Image getColumnImage(Object element, int columnIndex) {
    return null;
  }
  public String getColumnText(Object element, int columnIndex) {
    Student person = (Student) element;
    switch (columnIndex) {
    case 0:
      return person.getName();
    case 1:
      return Boolean.toString(person.isMale());
    case 2:
      return AgeRange.INSTANCES[person.getAgeRange().intValue()];
    case 3:
      return person.getShirtColor().toString();
    }
    return null;
  }
  public void addListener(ILabelProviderListener listener) {
  }
  public void dispose() {
  }
  public boolean isLabelProperty(Object element, String property) {
    return false;
  }
  public void removeListener(ILabelProviderListener listener) {
  }
}
class AgeRange {
  public static final String NONE = "";
  public static final String BABY = "0 - 3";
  public static final String TODDLER = "4 - 7";
  public static final String CHILD = "8 - 12";
  public static final String TEENAGER = "13 - 19";
  public static final String ADULT = "20 - ?";
  public static final String[] INSTANCES = { NONE, BABY, TODDLER, CHILD,
      TEENAGER, ADULT};
}