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The source code/******************************************************************************* * Copyright (c) 2005, 2008 IBM Corporation 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: * IBM Corporation - initial API and implementation *******************************************************************************/ package org.eclipse.jface.snippets.viewers; import org.eclipse.jface.viewers.CellEditor; import org.eclipse.jface.viewers.ColumnViewerEditorActivationEvent; import org.eclipse.jface.viewers.ColumnViewerEditorDeactivationEvent; import org.eclipse.jface.viewers.ViewerCell; import org.eclipse.jface.viewers.ViewerRow; import org.eclipse.swt.SWT; import org.eclipse.swt.events.KeyAdapter; import org.eclipse.swt.events.KeyEvent; import org.eclipse.swt.graphics.Color; import org.eclipse.swt.graphics.Font; import org.eclipse.swt.graphics.Image; import org.eclipse.swt.widgets.Button; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Control; /** * @since 3.4 * */ public class BooleanCellEditor extends CellEditor { private Button button; private ViewerRow row; private int index; private String restoredText; private Image restoredImage; /** * @param parent */ public BooleanCellEditor(Composite parent) { super(parent); } /** * @param parent * @param style */ public BooleanCellEditor(Composite parent, int style) { super(parent, style); } public LayoutData getLayoutData() { LayoutData data = super.getLayoutData(); data.horizontalAlignment=SWT.CENTER; data.grabHorizontal = false; return data; } protected Control createControl(Composite parent) { Font font = parent.getFont(); Color bg = parent.getBackground(); button = new Button(parent, getStyle() | SWT.CHECK); button.setFont(font); button.setBackground(bg); button.addKeyListener(new KeyAdapter() { /* (non-Javadoc) * @see org.eclipse.swt.events.KeyAdapter#keyReleased(org.eclipse.swt.events.KeyEvent) */ public void keyReleased(KeyEvent e) { if( e.character == SWT.ESC ) { fireCancelEditor(); } } }); return button; } protected Object doGetValue() { return new Boolean(button.getSelection()); } protected void doSetValue(Object value) { boolean selection = Boolean.TRUE.equals(value); button.setSelection(selection); } protected void doSetFocus() { if (button != null) { button.setFocus(); } } protected void deactivate(ColumnViewerEditorDeactivationEvent event) { super.deactivate(event); if( event.eventType == ColumnViewerEditorDeactivationEvent.EDITOR_CANCELED ) { row.setImage(index, restoredImage); row.setText(index, restoredText); } row = null; restoredImage = null; restoredText = null; } public void activate(ColumnViewerEditorActivationEvent activationEvent) { ViewerCell cell = (ViewerCell)activationEvent.getSource(); index = cell.getColumnIndex(); row = (ViewerRow) cell.getViewerRow().clone(); restoredImage = row.getImage(index); restoredText = row.getText(index); row.setImage(index, null); row.setText(index, ""); //$NON-NLS-1$ super.activate(activationEvent); } /* (non-Javadoc) * @see org.eclipse.jface.viewers.CellEditor#getDoubleClickTimeout() */ protected int getDoubleClickTimeout() { return 0; } } |
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