Java tutorial
/******************************************************************************* * Copyright (c) 2006, 2016 Tom Schindl and others. * * This program and the accompanying materials * are made available under the terms of the Eclipse Public License 2.0 * which accompanies this distribution, and is available at * https://www.eclipse.org/legal/epl-2.0/ * * SPDX-License-Identifier: EPL-2.0 * * Contributors: * Tom Schindl - initial API and implementation * Niels Lippke - initial API and implementation * Lars Vogel (lars.vogel@gmail.com) - Bug 413427, 489234 * Jeanderson Candido <http://jeandersonbc.github.io> - Bug 414565 *******************************************************************************/ package org.eclipse.jface.snippets.viewers; import org.eclipse.jface.viewers.ArrayContentProvider; import org.eclipse.jface.viewers.CellEditor; import org.eclipse.jface.viewers.CellNavigationStrategy; import org.eclipse.jface.viewers.ColumnLabelProvider; import org.eclipse.jface.viewers.ColumnViewer; import org.eclipse.jface.viewers.ColumnViewerEditor; import org.eclipse.jface.viewers.ColumnViewerEditorActivationEvent; import org.eclipse.jface.viewers.ColumnViewerEditorActivationListener; import org.eclipse.jface.viewers.ColumnViewerEditorActivationStrategy; import org.eclipse.jface.viewers.ColumnViewerEditorDeactivationEvent; import org.eclipse.jface.viewers.ComboBoxCellEditor; import org.eclipse.jface.viewers.EditingSupport; import org.eclipse.jface.viewers.FocusCellOwnerDrawHighlighter; import org.eclipse.jface.viewers.TableViewer; import org.eclipse.jface.viewers.TableViewerColumn; import org.eclipse.jface.viewers.TableViewerEditor; import org.eclipse.jface.viewers.TableViewerFocusCellManager; import org.eclipse.jface.viewers.TextCellEditor; import org.eclipse.jface.viewers.ViewerCell; import org.eclipse.swt.SWT; import org.eclipse.swt.layout.FillLayout; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Event; import org.eclipse.swt.widgets.Shell; /** * Shows how to reveal columns when they are navigated. * */ public class Snippet058CellNavigationIn34 { public class Person { public String givenname; public String surname; public String email; public String gender; public Person(String givenname, String surname, String email, String gender) { this.givenname = givenname; this.surname = surname; this.email = email; this.gender = gender; } } protected abstract class AbstractEditingSupport extends EditingSupport { private final CellEditor editor; public AbstractEditingSupport(TableViewer viewer) { super(viewer); this.editor = new TextCellEditor(viewer.getTable()); } public AbstractEditingSupport(TableViewer viewer, CellEditor editor) { super(viewer); this.editor = editor; } @Override protected boolean canEdit(Object element) { return true; } @Override protected CellEditor getCellEditor(Object element) { return editor; } @Override protected void setValue(Object element, Object value) { doSetValue(element, value); getViewer().update(element, null); } protected abstract void doSetValue(Object element, Object value); } public Snippet058CellNavigationIn34(Shell shell) { final TableViewer v = new TableViewer(shell, SWT.BORDER | SWT.FULL_SELECTION); v.setContentProvider(ArrayContentProvider.getInstance()); TableViewerColumn column = null; column = createColumnFor(v, "Givenname"); column.setLabelProvider(new ColumnLabelProvider() { @Override public String getText(Object element) { return ((Person) element).givenname; } }); column.setEditingSupport(new AbstractEditingSupport(v) { @Override protected Object getValue(Object element) { return ((Person) element).givenname; } @Override protected void doSetValue(Object element, Object value) { ((Person) element).givenname = value.toString(); } }); column = createColumnFor(v, "Surname"); column.setLabelProvider(new ColumnLabelProvider() { @Override public String getText(Object element) { return ((Person) element).surname; } }); column.setEditingSupport(new AbstractEditingSupport(v) { @Override protected Object getValue(Object element) { return ((Person) element).surname; } @Override protected void doSetValue(Object element, Object value) { ((Person) element).surname = value.toString(); } }); column = createColumnFor(v, "E-Mail"); column.setLabelProvider(new ColumnLabelProvider() { @Override public String getText(Object element) { return ((Person) element).email; } }); column.setEditingSupport(new AbstractEditingSupport(v) { @Override protected Object getValue(Object element) { return ((Person) element).email; } @Override protected void doSetValue(Object element, Object value) { ((Person) element).email = value.toString(); } }); column = createColumnFor(v, "Gender"); column.setLabelProvider(new ColumnLabelProvider() { @Override public String getText(Object element) { return ((Person) element).gender; } }); ComboBoxCellEditor editor = new ComboBoxCellEditor(v.getTable(), new String[] { "M", "F" }); editor.setActivationStyle(ComboBoxCellEditor.DROP_DOWN_ON_TRAVERSE_ACTIVATION | ComboBoxCellEditor.DROP_DOWN_ON_PROGRAMMATIC_ACTIVATION | ComboBoxCellEditor.DROP_DOWN_ON_MOUSE_ACTIVATION | ComboBoxCellEditor.DROP_DOWN_ON_KEY_ACTIVATION); column.setEditingSupport(new AbstractEditingSupport(v, editor) { @Override protected Object getValue(Object element) { if (((Person) element).gender.equals("M")) return Integer.valueOf(0); return Integer.valueOf(1); } @Override protected void doSetValue(Object element, Object value) { if (((Integer) value).intValue() == 0) { ((Person) element).gender = "M"; } else { ((Person) element).gender = "F"; } } }); CellNavigationStrategy naviStrat = new CellNavigationStrategy() { @Override public ViewerCell findSelectedCell(ColumnViewer viewer, ViewerCell currentSelectedCell, Event event) { ViewerCell cell = super.findSelectedCell(viewer, currentSelectedCell, event); if (cell != null) { v.getTable().showColumn(v.getTable().getColumn(cell.getColumnIndex())); } return cell; } }; TableViewerFocusCellManager focusCellManager = new TableViewerFocusCellManager(v, new FocusCellOwnerDrawHighlighter(v), naviStrat); ColumnViewerEditorActivationStrategy actSupport = new ColumnViewerEditorActivationStrategy(v) { @Override protected boolean isEditorActivationEvent(ColumnViewerEditorActivationEvent event) { return event.eventType == ColumnViewerEditorActivationEvent.TRAVERSAL || event.eventType == ColumnViewerEditorActivationEvent.MOUSE_DOUBLE_CLICK_SELECTION || (event.eventType == ColumnViewerEditorActivationEvent.KEY_PRESSED && event.keyCode == SWT.CR) || event.eventType == ColumnViewerEditorActivationEvent.PROGRAMMATIC; } }; int feature = ColumnViewerEditor.TABBING_HORIZONTAL | ColumnViewerEditor.TABBING_MOVE_TO_ROW_NEIGHBOR | ColumnViewerEditor.TABBING_VERTICAL | ColumnViewerEditor.KEYBOARD_ACTIVATION; TableViewerEditor.create(v, focusCellManager, actSupport, feature); v.getColumnViewerEditor().addEditorActivationListener(new ColumnViewerEditorActivationListener() { @Override public void afterEditorActivated(ColumnViewerEditorActivationEvent event) { } @Override public void afterEditorDeactivated(ColumnViewerEditorDeactivationEvent event) { } @Override public void beforeEditorActivated(ColumnViewerEditorActivationEvent event) { ViewerCell cell = (ViewerCell) event.getSource(); v.getTable().showColumn(v.getTable().getColumn(cell.getColumnIndex())); } @Override public void beforeEditorDeactivated(ColumnViewerEditorDeactivationEvent event) { } }); Person[] model = createModel(); v.setInput(model); v.getTable().setLinesVisible(true); v.getTable().setHeaderVisible(true); } private TableViewerColumn createColumnFor(final TableViewer v, String label) { TableViewerColumn column; column = new TableViewerColumn(v, SWT.NONE); column.getColumn().setWidth(200); column.getColumn().setText(label); column.getColumn().setMoveable(true); return column; } private Person[] createModel() { return new Person[] { new Person("Tom", "Schindl", "tom.schindl@bestsolution.at", "M"), new Person("Boris", "Bokowski", "Boris_Bokowski@ca.ibm.com", "M"), new Person("Tod", "Creasey", "Tod_Creasey@ca.ibm.com", "M"), new Person("Wayne", "Beaton", "wayne@eclipse.org", "M"), new Person("Jeanderson", "Candido", "jeandersonbc@gmail.com", "M"), new Person("Lars", "Vogel", "lars.vogel@gmail.com", "M"), new Person("Hendrik", "Still", "hendrik.still@vogella.com", "M") }; } /** * @param args */ public static void main(String[] args) { Display display = new Display(); Shell shell = new Shell(display); shell.setLayout(new FillLayout()); new Snippet058CellNavigationIn34(shell); shell.setSize(300, 300); shell.open(); while (!shell.isDisposed()) { if (!display.readAndDispatch()) display.sleep(); } display.dispose(); } }