| /******************************************************************************* |
| * 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 |
| * 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.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.jface.viewers.Viewer; |
| import org.eclipse.jface.viewers.ViewerComparator; |
| import org.eclipse.swt.SWT; |
| import org.eclipse.swt.events.SelectionAdapter; |
| import org.eclipse.swt.events.SelectionEvent; |
| import org.eclipse.swt.layout.FillLayout; |
| import org.eclipse.swt.widgets.Display; |
| import org.eclipse.swt.widgets.Shell; |
| import org.eclipse.swt.widgets.Table; |
| |
| /** |
| * Example usage of ViewerComparator in tables to allow sorting |
| * |
| * @author Tom Schindl <tom.schindl@bestsolution.at> |
| * |
| */ |
| public class Snippet040TableViewerSorting { |
| |
| 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()); |
| } |
| |
| @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 Snippet040TableViewerSorting(Shell shell) { |
| TableViewer viewer = new TableViewer(shell, SWT.BORDER |
| | SWT.FULL_SELECTION); |
| viewer.setContentProvider(ArrayContentProvider.getInstance()); |
| |
| TableViewerColumn column = createColumnFor(viewer, "Givenname"); |
| column.setLabelProvider(new ColumnLabelProvider() { |
| |
| @Override |
| public String getText(Object element) { |
| return ((Person) element).givenname; |
| } |
| }); |
| |
| column.setEditingSupport(new AbstractEditingSupport(viewer) { |
| |
| @Override |
| protected Object getValue(Object element) { |
| return ((Person) element).givenname; |
| } |
| |
| @Override |
| protected void doSetValue(Object element, Object value) { |
| ((Person) element).givenname = value.toString(); |
| } |
| |
| }); |
| |
| ColumnViewerComparator cSorter = new ColumnViewerComparator(viewer, column) { |
| |
| @Override |
| protected int doCompare(Viewer viewer, Object e1, Object e2) { |
| Person p1 = (Person) e1; |
| Person p2 = (Person) e2; |
| return p1.givenname.compareToIgnoreCase(p2.givenname); |
| } |
| |
| }; |
| |
| column = createColumnFor(viewer, "Surname"); |
| column.setLabelProvider(new ColumnLabelProvider() { |
| |
| @Override |
| public String getText(Object element) { |
| return ((Person) element).surname; |
| } |
| |
| }); |
| |
| column.setEditingSupport(new AbstractEditingSupport(viewer) { |
| |
| @Override |
| protected Object getValue(Object element) { |
| return ((Person) element).surname; |
| } |
| |
| @Override |
| protected void doSetValue(Object element, Object value) { |
| ((Person) element).surname = value.toString(); |
| } |
| |
| }); |
| |
| new ColumnViewerComparator(viewer, column) { |
| |
| @Override |
| protected int doCompare(Viewer viewer, Object e1, Object e2) { |
| Person p1 = (Person) e1; |
| Person p2 = (Person) e2; |
| return p1.surname.compareToIgnoreCase(p2.surname); |
| } |
| |
| }; |
| |
| column = createColumnFor(viewer, "E-Mail"); |
| column.setLabelProvider(new ColumnLabelProvider() { |
| |
| @Override |
| public String getText(Object element) { |
| return ((Person) element).email; |
| } |
| |
| }); |
| |
| column.setEditingSupport(new AbstractEditingSupport(viewer) { |
| |
| @Override |
| protected Object getValue(Object element) { |
| return ((Person) element).email; |
| } |
| |
| @Override |
| protected void doSetValue(Object element, Object value) { |
| ((Person) element).email = value.toString(); |
| } |
| |
| }); |
| |
| new ColumnViewerComparator(viewer, column) { |
| |
| @Override |
| protected int doCompare(Viewer viewer, Object e1, Object e2) { |
| Person p1 = (Person) e1; |
| Person p2 = (Person) e2; |
| return p1.email.compareToIgnoreCase(p2.email); |
| } |
| |
| }; |
| |
| viewer.setInput(createModel()); |
| viewer.getTable().setLinesVisible(true); |
| viewer.getTable().setHeaderVisible(true); |
| cSorter.setSorter(cSorter, ColumnViewerComparator.ASC); |
| } |
| |
| private TableViewerColumn createColumnFor(TableViewer viewer, String label) { |
| TableViewerColumn column = new TableViewerColumn(viewer, 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"), |
| new Person("Boris", "Bokowski", "Boris_Bokowski@ca.ibm.com"), |
| new Person("Tod", "Creasey", "Tod_Creasey@ca.ibm.com"), |
| new Person("Wayne", "Beaton", "wayne@eclipse.org"), |
| new Person("Jeanderson", "Candido", "jeandersonbc@gmail.com"), |
| new Person("Lars", "Vogel", "Lars.Vogel@gmail.com"), |
| new Person("Hendrik", "Still", "hendrik.still@gammas.de") }; |
| } |
| |
| private static abstract class ColumnViewerComparator extends ViewerComparator { |
| |
| public static final int ASC = 1; |
| public static final int NONE = 0; |
| public static final int DESC = -1; |
| |
| private int direction = 0; |
| private TableViewerColumn column; |
| private ColumnViewer viewer; |
| |
| public ColumnViewerComparator(ColumnViewer viewer, TableViewerColumn column) { |
| this.column = column; |
| this.viewer = viewer; |
| SelectionAdapter selectionAdapter = createSelectionAdapter(); |
| this.column.getColumn().addSelectionListener(selectionAdapter); |
| } |
| |
| private SelectionAdapter createSelectionAdapter() { |
| return new SelectionAdapter() { |
| |
| @Override |
| public void widgetSelected(SelectionEvent e) { |
| if (ColumnViewerComparator.this.viewer.getComparator() != null) { |
| if (ColumnViewerComparator.this.viewer.getComparator() == ColumnViewerComparator.this) { |
| int tdirection = ColumnViewerComparator.this.direction; |
| if (tdirection == ASC) { |
| setSorter(ColumnViewerComparator.this, DESC); |
| } else if (tdirection == DESC) { |
| setSorter(ColumnViewerComparator.this, NONE); |
| } |
| } else { |
| setSorter(ColumnViewerComparator.this, ASC); |
| } |
| } else { |
| setSorter(ColumnViewerComparator.this, ASC); |
| } |
| } |
| }; |
| } |
| |
| public void setSorter(ColumnViewerComparator sorter, int direction) { |
| Table columnParent = column.getColumn().getParent(); |
| if (direction == NONE) { |
| columnParent.setSortColumn(null); |
| columnParent.setSortDirection(SWT.NONE); |
| viewer.setComparator(null); |
| |
| } else { |
| columnParent.setSortColumn(column.getColumn()); |
| sorter.direction = direction; |
| columnParent.setSortDirection(direction == ASC ? SWT.DOWN : SWT.UP); |
| |
| if (viewer.getComparator() == sorter) { |
| viewer.refresh(); |
| } else { |
| viewer.setComparator(sorter); |
| } |
| |
| } |
| } |
| |
| @Override |
| public int compare(Viewer viewer, Object e1, Object e2) { |
| return direction * doCompare(viewer, e1, e2); |
| } |
| |
| protected abstract int doCompare(Viewer viewer, Object e1, Object e2); |
| } |
| |
| /** |
| * @param args |
| */ |
| public static void main(String[] args) { |
| Display display = new Display(); |
| |
| Shell shell = new Shell(display); |
| shell.setLayout(new FillLayout()); |
| new Snippet040TableViewerSorting(shell); |
| shell.open(); |
| |
| while (!shell.isDisposed()) { |
| if (!display.readAndDispatch()) |
| display.sleep(); |
| } |
| display.dispose(); |
| } |
| |
| } |