Java tutorial
/******************************************************************************* * Copyright (c) 2006, 2014 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 * Lars Vogel (lars.vogel@gmail.com) - Bug 413427 * Simon Scholz <simon.scholz@vogella.com> - Bug 442343 *******************************************************************************/ package org.eclipse.jface.snippets.viewers; import org.eclipse.jface.action.Action; 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.ColumnViewerEditor; import org.eclipse.jface.viewers.ColumnViewerEditorActivationEvent; import org.eclipse.jface.viewers.ColumnViewerEditorActivationStrategy; 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.swt.SWT; import org.eclipse.swt.layout.FillLayout; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Shell; /** * Example of showing how easy cell-navigation with hidden cells is in 3.4 * * @author Tom Schindl <tom.schindl@bestsolution.at> */ public class Snippet057TableViewerSkipHiddenCells { 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); editor = new TextCellEditor(viewer.getTable()); } @Override protected boolean canEdit(Object element) { return true; } @Override protected CellEditor getCellEditor(Object element) { return editor; } @Override protected void setValue(Object element, Object value) { this.doSetValue(element, value); this.getViewer().update(element, null); } protected abstract void doSetValue(Object element, Object value); } public Snippet057TableViewerSkipHiddenCells(Shell shell) { final TableViewer tableviewer = new TableViewer(shell, SWT.BORDER | SWT.FULL_SELECTION); tableviewer.setContentProvider(ArrayContentProvider.getInstance()); MenuManager mgr = new MenuManager(); mgr.add(new Action("toggle surname visibility") { @Override public void run() { if (tableviewer.getTable().getColumn(1).getWidth() == 0) { tableviewer.getTable().getColumn(1).setWidth(200); } else { tableviewer.getTable().getColumn(1).setWidth(0); } } }); tableviewer.getControl().setMenu(mgr.createContextMenu(tableviewer.getControl())); // Column 1 TableViewerColumn column = new TableViewerColumn(tableviewer, SWT.NONE); column.getColumn().setWidth(200); column.getColumn().setText("Givenname"); column.getColumn().setMoveable(false); column.setLabelProvider(new ColumnLabelProvider() { @Override public String getText(Object element) { return ((Person) element).givenname; } }); column.setEditingSupport(new AbstractEditingSupport(tableviewer) { @Override protected Object getValue(Object element) { return ((Person) element).givenname; } @Override protected void doSetValue(Object element, Object value) { ((Person) element).givenname = value.toString(); } }); // Column 2 is zero-width hidden column = new TableViewerColumn(tableviewer, SWT.NONE); column.getColumn().setWidth(200); column.getColumn().setText("Surname"); column.getColumn().setMoveable(false); column.getColumn().setResizable(false); column.setLabelProvider(new ColumnLabelProvider() { @Override public String getText(Object element) { return ((Person) element).surname; } }); column.setEditingSupport(new AbstractEditingSupport(tableviewer) { @Override protected Object getValue(Object element) { return ((Person) element).surname; } @Override protected void doSetValue(Object element, Object value) { ((Person) element).surname = value.toString(); } }); // column 3 column = new TableViewerColumn(tableviewer, SWT.NONE); column.getColumn().setWidth(200); column.getColumn().setText("E-Mail"); column.getColumn().setMoveable(false); column.setLabelProvider(new ColumnLabelProvider() { @Override public String getText(Object element) { return ((Person) element).email; } }); column.setEditingSupport(new AbstractEditingSupport(tableviewer) { @Override protected Object getValue(Object element) { return ((Person) element).email; } @Override protected void doSetValue(Object element, Object value) { ((Person) element).email = value.toString(); } }); Person[] model = this.createModel(); tableviewer.setInput(model); tableviewer.getTable().setLinesVisible(true); tableviewer.getTable().setHeaderVisible(true); TableViewerFocusCellManager focusCellManager = new TableViewerFocusCellManager(tableviewer, new FocusCellOwnerDrawHighlighter(tableviewer)); ColumnViewerEditorActivationStrategy actSupport = new ColumnViewerEditorActivationStrategy(tableviewer) { @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; } }; TableViewerEditor.create(tableviewer, focusCellManager, actSupport, ColumnViewerEditor.TABBING_HORIZONTAL | ColumnViewerEditor.TABBING_MOVE_TO_ROW_NEIGHBOR | ColumnViewerEditor.TABBING_VERTICAL | ColumnViewerEditor.KEYBOARD_ACTIVATION); } private Person[] createModel() { Person[] elements = new Person[4]; elements[0] = new Person("Tom", "Schindl", "tom.schindl@bestsolution.at"); elements[1] = new Person("Boris", "Bokowski", "Boris_Bokowski@ca.ibm.com"); elements[2] = new Person("Tod", "Creasey", "Tod_Creasey@ca.ibm.com"); elements[3] = new Person("Wayne", "Beaton", "wayne@eclipse.org"); return elements; } public static void main(String[] args) { Display display = new Display(); Shell shell = new Shell(display); shell.setLayout(new FillLayout()); new Snippet057TableViewerSkipHiddenCells(shell); shell.open(); while (!shell.isDisposed()) { if (!display.readAndDispatch()) { display.sleep(); } } display.dispose(); } }