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The source code/******************************************************************************* * 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.action.Action; import org.eclipse.jface.action.IMenuListener; import org.eclipse.jface.action.IMenuManager; import org.eclipse.jface.action.MenuManager; 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.events.MouseAdapter; import org.eclipse.swt.events.MouseEvent; import org.eclipse.swt.layout.FillLayout; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Shell; /** * Explore the new API added in 3.3 and see how easily you can create reusable * components * * @author Tom Schindl <tom.schindl@bestsolution.at> * @since 3.2 */ public class Snippet019TableViewerAddRemoveColumnsWithEditingNewAPI { 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; } } 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) { } } private class GivenNameLabelProvider extends ColumnLabelProvider { public String getText(Object element) { return ((Person) element).givenname; } } private class GivenNameEditing extends EditingSupport { private TextCellEditor cellEditor; public GivenNameEditing(TableViewer viewer) { super(viewer); cellEditor = new TextCellEditor(viewer.getTable()); } protected boolean canEdit(Object element) { return true; } protected CellEditor getCellEditor(Object element) { return cellEditor; } protected Object getValue(Object element) { return ((Person) element).givenname; } protected void setValue(Object element, Object value) { ((Person) element).givenname = value.toString(); getViewer().update(element, null); } } private class SurNameLabelProvider extends ColumnLabelProvider { public String getText(Object element) { return ((Person) element).surname; } } private class SurNameEditing extends EditingSupport { private TextCellEditor cellEditor; public SurNameEditing( TableViewer viewer ) { super(viewer); cellEditor = new TextCellEditor(viewer.getTable()); } protected boolean canEdit(Object element) { return true; } protected CellEditor getCellEditor(Object element) { return cellEditor; } protected Object getValue(Object element) { return ((Person) element).surname; } protected void setValue(Object element, Object value) { ((Person) element).surname = value.toString(); getViewer().update(element, null); } } private class EmailLabelProvider extends ColumnLabelProvider { public String getText(Object element) { return ((Person) element).email; } } private class EmailEditing extends EditingSupport { private TextCellEditor cellEditor; public EmailEditing( TableViewer viewer ) { super(viewer); cellEditor = new TextCellEditor(viewer.getTable()); } protected boolean canEdit(Object element) { return true; } protected CellEditor getCellEditor(Object element) { return cellEditor; } protected Object getValue(Object element) { return ((Person) element).email; } protected void setValue(Object element, Object value) { ((Person) element).email = value.toString(); getViewer().update(element, null); } } private int activeColumn = -1; private TableViewerColumn column; public Snippet019TableViewerAddRemoveColumnsWithEditingNewAPI(Shell shell) { final TableViewer v = new TableViewer(shell, SWT.BORDER | SWT.FULL_SELECTION); TableViewerColumn column = new TableViewerColumn(v,SWT.NONE); column.setLabelProvider(new GivenNameLabelProvider()); column.setEditingSupport(new GivenNameEditing(v)); column.getColumn().setWidth(200); column.getColumn().setText("Givenname"); column = new TableViewerColumn(v,SWT.NONE); column.setLabelProvider(new SurNameLabelProvider()); column.setEditingSupport(new SurNameEditing(v)); column.getColumn().setWidth(200); column.getColumn().setText("Surname"); Person[] model = createModel(); v.setContentProvider(new MyContentProvider()); v.setInput(model); v.getTable().setLinesVisible(true); v.getTable().setHeaderVisible(true); addMenu(v); triggerColumnSelectedColumn(v); } private void triggerColumnSelectedColumn(final TableViewer v) { v.getTable().addMouseListener(new MouseAdapter() { public void mouseDown(MouseEvent e) { int x = 0; for (int i = 0; i < v.getTable().getColumnCount(); i++) { x += v.getTable().getColumn(i).getWidth(); if (e.x <= x) { activeColumn = i; break; } } } }); } private void removeEmailColumn(TableViewer v) { column.getColumn().dispose(); v.refresh(); } private void addEmailColumn(TableViewer v, int columnIndex) { column = new TableViewerColumn(v, SWT.NONE, columnIndex); column.setLabelProvider(new EmailLabelProvider()); column.setEditingSupport(new EmailEditing(v)); column.getColumn().setText("E-Mail"); v.refresh(); column.getColumn().setWidth(200); } private void addMenu(final TableViewer v) { final MenuManager mgr = new MenuManager(); final Action insertEmailBefore = new Action("Insert E-Mail before") { public void run() { addEmailColumn(v, activeColumn); } }; final Action insertEmailAfter = new Action("Insert E-Mail after") { public void run() { addEmailColumn(v, activeColumn + 1); } }; final Action removeEmail = new Action("Remove E-Mail") { public void run() { removeEmailColumn(v); } }; mgr.setRemoveAllWhenShown(true); mgr.addMenuListener(new IMenuListener() { public void menuAboutToShow(IMenuManager manager) { if (v.getTable().getColumnCount() == 2) { manager.add(insertEmailBefore); manager.add(insertEmailAfter); } else { manager.add(removeEmail); } } }); v.getControl().setMenu(mgr.createContextMenu(v.getControl())); } private Person[] createModel() { Person[] persons = new Person[3]; persons[0] = new Person("Tom", "Schindl", "tom.schindl@bestsolution.at"); persons[1] = new Person("Boris", "Bokowski", "boris_bokowski@ca.ibm.com"); persons[2] = new Person("Tod", "Creasey", "tod_creasey@ca.ibm.com"); return persons; } /** * @param args */ public static void main(String[] args) { Display display = new Display(); Shell shell = new Shell(display); shell.setLayout(new FillLayout()); new Snippet019TableViewerAddRemoveColumnsWithEditingNewAPI(shell); shell.open(); while (!shell.isDisposed()) { if (!display.readAndDispatch()) display.sleep(); } display.dispose(); } } |
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