snippet024tableviewerexplorenewapi.java

对于可视的桌面开发系统的一些详细的设计资料

/*******************************************************************************
 * Copyright (c) 2006 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
 *******************************************************************************/

package org.eclipse.jface.snippets.viewers;

import org.eclipse.jface.viewers.CellEditor;
import org.eclipse.jface.viewers.ColumnLabelProvider;
import org.eclipse.jface.viewers.EditingSupport;
import org.eclipse.jface.viewers.IStructuredContentProvider;
import org.eclipse.jface.viewers.TableViewer;
import org.eclipse.jface.viewers.TableViewerColumn;
import org.eclipse.jface.viewers.TextCellEditor;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;

/**
 * Example usage of ITableLabelProvider using images and labels
 * 
 * @author Tom Schindl <[e-mail]>
 * 
 */
public class Snippet024TableViewerExploreNewAPI {

	private class MyContentProvider implements IStructuredContentProvider {

		public Object[] getElements(Object inputElement) {
			return (Person[]) inputElement;
		}

		public void dispose() {
		}

		public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
		}

	}

	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;
		}

	}

	protected abstract class AbstractEditingSupport extends EditingSupport {
		private TextCellEditor editor;

		public AbstractEditingSupport(TableViewer viewer) {
			super(viewer);
			this.editor = new TextCellEditor(viewer.getTable());
		}

		protected boolean canEdit(Object element) {
			return true;
		}

		protected CellEditor getCellEditor(Object element) {
			return editor;
		}

		protected void setValue(Object element, Object value) {
			doSetValue(element, value);
			getViewer().update(element, null);
		}

		protected abstract void doSetValue(Object element, Object value);
	}

	public Snippet024TableViewerExploreNewAPI(Shell shell) {
		TableViewer v = new TableViewer(shell, SWT.BORDER | SWT.FULL_SELECTION);
		v.setContentProvider(new MyContentProvider());

		TableViewerColumn column = new TableViewerColumn(v, SWT.NONE);
		column.getColumn().setWidth(200);
		column.getColumn().setText("Givenname");
		column.getColumn().setMoveable(true);
		column.setLabelProvider(new ColumnLabelProvider() {

			public String getText(Object element) {
				return ((Person) element).givenname;
			}
		});

		column.setEditingSupport(new AbstractEditingSupport(v) {

			protected Object getValue(Object element) {
				return ((Person) element).givenname;
			}

			protected void doSetValue(Object element, Object value) {
				((Person) element).givenname = value.toString();
			}

		});

		column = new TableViewerColumn(v, SWT.NONE);
		column.getColumn().setWidth(200);
		column.getColumn().setText("Surname");
		column.getColumn().setMoveable(true);
		column.setLabelProvider(new ColumnLabelProvider() {

			public String getText(Object element) {
				return ((Person) element).surname;
			}

		});

		column.setEditingSupport(new AbstractEditingSupport(v) {

			protected Object getValue(Object element) {
				return ((Person) element).surname;
			}

			protected void doSetValue(Object element, Object value) {
				((Person) element).surname = value.toString();
			}

		});

		column = new TableViewerColumn(v, SWT.NONE);
		column.getColumn().setWidth(200);
		column.getColumn().setText("E-Mail");
		column.getColumn().setMoveable(true);
		column.setLabelProvider(new ColumnLabelProvider() {

			public String getText(Object element) {
				return ((Person) element).email;
			}

		});

		column.setEditingSupport(new AbstractEditingSupport(v) {

			protected Object getValue(Object element) {
				return ((Person) element).email;
			}

			protected void doSetValue(Object element, Object value) {
				((Person) element).email = value.toString();
			}

		});

		Person[] model = createModel();
		v.setInput(model);
		v.getTable().setLinesVisible(true);
		v.getTable().setHeaderVisible(true);
	}

	private Person[] createModel() {
		Person[] elements = new Person[4];
		elements[0] = new Person("Tom", "Schindl",
				"[e-mail]");
		elements[1] = new Person("Boris", "Bokowski",
				"[e-mail]");
		elements[2] = new Person("Tod", "Creasey", "[e-mail]");
		elements[3] = new Person("Wayne", "Beaton", "[e-mail]");

		return elements;
	}

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		Display display = new Display();

		Shell shell = new Shell(display);
		shell.setLayout(new FillLayout());
		new Snippet024TableViewerExploreNewAPI(shell);
		shell.open();

		while (!shell.isDisposed()) {
			if (!display.readAndDispatch())
				display.sleep();
		}

		display.dispose();

	}

}