Java tutorial
/******************************************************************************* * Copyright (c) 2007, 2013 compeople AG 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: * compeople AG - initial API and implementation *******************************************************************************/ package org.eclipse.riena.ui.swt; import org.eclipse.jface.dialogs.MessageDialog; import org.eclipse.jface.layout.LayoutConstants; import org.eclipse.swt.SWT; import org.eclipse.swt.graphics.Image; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Shell; import org.eclipse.riena.ui.swt.facades.DialogConstantsFacade; import org.eclipse.riena.ui.swt.lnf.LnFUpdater; import org.eclipse.riena.ui.swt.lnf.LnfKeyConstants; import org.eclipse.riena.ui.swt.lnf.LnfManager; /** * A dialog for showing messages and with an own renderer for the border and the * title bar. */ public class RienaMessageDialog extends MessageDialog { private final LnFUpdater lnfUpdater = LnFUpdater.getInstance(); // --- start - code from JFace MessageDialog.java --- /** * Convenience method to open a simple themed dialog as specified by the * <code>kind</code> flag. * * @param kind * the kind of dialog to open, one of {@link #ERROR}, * {@link #INFORMATION}, {@link #QUESTION}, {@link #WARNING}, * {@link #CONFIRM}, or {@link #QUESTION_WITH_CANCEL}. * @param parent * the parent shell of the dialog, or <code>null</code> if none * @param title * the dialog's title, or <code>null</code> if none * @param message * the message * @param style * {@link SWT#NONE} for a default dialog, or {@link SWT#SHEET} * for a dialog with sheet behavior * @return <code>true</code> if the user presses the OK or Yes button, * <code>false</code> otherwise * @since 3.0 */ public static boolean open(final int kind, final Shell parent, final String title, final String message, int style) { final RienaMessageDialog dialog = new RienaMessageDialog(parent, title, null, message, kind, getButtonLabels(kind), 0); style &= SWT.SHEET; dialog.setShellStyle(dialog.getShellStyle() | style); return dialog.open() == 0; } /** * Convenience method to open a themed confirm (OK/Cancel) dialog. * * @param parent * the parent shell of the dialog, or <code>null</code> if none * @param title * the dialog's title, or <code>null</code> if none * @param message * the message * @return <code>true</code> if the user presses the OK button, * <code>false</code> otherwise * @since 3.0 */ public static boolean openConfirm(final Shell parent, final String title, final String message) { return open(CONFIRM, parent, title, message, SWT.NONE); } /** * Convenience method to open a themed error dialog. * * @param parent * the parent shell of the dialog, or <code>null</code> if none * @param title * the dialog's title, or <code>null</code> if none * @param message * the message * @since 3.0 */ public static void openError(final Shell parent, final String title, final String message) { open(ERROR, parent, title, message, SWT.NONE); } /** * Convenience method to open a themed information dialog. * * @param parent * the parent shell of the dialog, or <code>null</code> if none * @param title * the dialog's title, or <code>null</code> if none * @param message * the message * @since 3.0 */ public static void openInformation(final Shell parent, final String title, final String message) { open(INFORMATION, parent, title, message, SWT.NONE); } /** * Convenience method to open a themed Yes/No question dialog. * * @param parent * the parent shell of the dialog, or <code>null</code> if none * @param title * the dialog's title, or <code>null</code> if none * @param message * the message * @return <code>true</code> if the user presses the Yes button, * <code>false</code> otherwise * @since 3.0 */ public static boolean openQuestion(final Shell parent, final String title, final String message) { return open(QUESTION, parent, title, message, SWT.NONE); } /** * Convenience method to open a themed warning dialog. * * @param parent * the parent shell of the dialog, or <code>null</code> if none * @param title * the dialog's title, or <code>null</code> if none * @param message * the message * @since 3.0 */ public static void openWarning(final Shell parent, final String title, final String message) { open(WARNING, parent, title, message, SWT.NONE); } private static String[] getButtonLabels(final int kind) { final DialogConstantsFacade facade = DialogConstantsFacade.getDefault(); switch (kind) { case ERROR: case INFORMATION: case WARNING: return new String[] { facade.getOkLabel() }; case CONFIRM: return new String[] { facade.getOkLabel(), facade.getCancelLabel() }; case QUESTION: return new String[] { facade.getYesLabel(), facade.getNoLabel() }; case QUESTION_WITH_CANCEL: return new String[] { facade.getYesLabel(), facade.getNoLabel(), facade.getCancelLabel() }; default: throw new IllegalArgumentException("Illegal value for kind in MessageDialog.open()"); //$NON-NLS-1$ } } // --- end - code from JFace MessageDialog.java --- private final RienaWindowRenderer dlgRenderer; /** * Creates a Riena message dialog. * * @param parentShell * the parent shell * @param dialogTitle * the dialog title, or <code>null</code> if none * @param dialogTitleImage * the dialog title image, or <code>null</code> if none * @param dialogMessage * the dialog message * @param dialogImageType * one of the following values: * <ul> * <li><code>MessageDialog.NONE</code> for a dialog with no image * </li> * <li><code>MessageDialog.ERROR</code> for a dialog with an * error image</li> * <li><code>MessageDialog.INFORMATION</code> for a dialog with * an information image</li> * <li><code>MessageDialog.QUESTION </code> for a dialog with a * question image</li> * <li><code>MessageDialog.WARNING</code> for a dialog with a * warning image</li> * </ul> * @param dialogButtonLabels * an array of labels for the buttons in the button bar * @param defaultIndex * the index in the button label array of the default button * * @see {@link MessageDialog#MessageDialog(Shell, String, Image, String, int, String[], int)} */ public RienaMessageDialog(final Shell parentShell, final String dialogTitle, final Image dialogTitleImage, final String dialogMessage, final int dialogImageType, final String[] dialogButtonLabels, final int defaultIndex) { super(parentShell, dialogTitle, dialogTitleImage, dialogMessage, dialogImageType, dialogButtonLabels, defaultIndex); dlgRenderer = new RienaWindowRenderer(this); } /** * Create the dialog area and the button bar for the receiver. * * @param parent */ @Override protected void createDialogAndButtonArea(final Composite parent) { // create the contents area GridLayout gridLayout = new GridLayout(); gridLayout.numColumns = 1; gridLayout.horizontalSpacing = 0; gridLayout.verticalSpacing = 0; gridLayout.marginWidth = 0; gridLayout.marginHeight = 0; parent.setLayout(gridLayout); dlgRenderer.createContents(parent); // create the dialog area and button bar final Composite centerComposite = dlgRenderer.getCenterComposite(); gridLayout = new GridLayout(); gridLayout.numColumns = 2; gridLayout.horizontalSpacing = LayoutConstants.getSpacing().x * 2; gridLayout.verticalSpacing = LayoutConstants.getSpacing().y; gridLayout.marginWidth = LayoutConstants.getMargins().x; gridLayout.marginHeight = LayoutConstants.getMargins().y; centerComposite.setLayout(gridLayout); dialogArea = createDialogArea(centerComposite); buttonBar = createButtonBar(centerComposite); lnfUpdater.updateUIControls(parent, true); } @Override public void create() { // compute the 'styled' shell style, before creating the shell setShellStyle(dlgRenderer.computeShellStyle()); super.create(); } /** * {@inheritDoc} * <p> * If an error image in the Riena Look&Feel is defined, the LnF image will * be returned; otherwise the standard SWT error image for a message box * well be returned. */ @Override public Image getErrorImage() { Image image = getLnfImage(LnfKeyConstants.MESSAGE_BOX_ERROR_ICON); if (image == null) { image = super.getErrorImage(); } return image; } /** * {@inheritDoc} * <p> * If an warning image in the Riena Look&Feel is defined, the LnF image will * be returned; otherwise the standard SWT warning image for a message box * well be returned. */ @Override public Image getWarningImage() { Image image = getLnfImage(LnfKeyConstants.MESSAGE_BOX_WARNING_ICON); if (image == null) { image = super.getWarningImage(); } return image; } /** * {@inheritDoc} * <p> * If an information image in the Riena Look&Feel is defined, the LnF image * will be returned; otherwise the standard SWT information image for a * message box well be returned. */ @Override public Image getInfoImage() { Image image = getLnfImage(LnfKeyConstants.MESSAGE_BOX_INFO_ICON); if (image == null) { image = super.getInfoImage(); } return image; } /** * {@inheritDoc} * <p> * If an question image in the Riena Look&Feel is defined, the LnF image * will be returned; otherwise the standard SWT question image for a message * box well be returned. */ @Override public Image getQuestionImage() { Image image = getLnfImage(LnfKeyConstants.MESSAGE_BOX_QUESTION_ICON); if (image == null) { image = super.getQuestionImage(); } return image; } private Image getLnfImage(final String lnfKey) { return LnfManager.getLnf().getImage(lnfKey); } }