NonBlockingMessageDialogs.java

/*******************************************************************************
 * Copyright (c) 2012 EclipseSource 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:
 *    EclipseSource - initial API and implementation
 *    Gunnar Wagenknecht - copyed from RAP examples and adapted for Gyrex
 ******************************************************************************/
package org.eclipse.gyrex.admin.ui.internal.widgets;

import org.eclipse.jface.dialogs.IDialogConstants;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.rap.rwt.widgets.DialogCallback;
import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Shell;

public class NonBlockingMessageDialogs {

	// Copy of MessageDialog#getButtonLabels( int )
	private static String[] getButtonLabels(final int kind) {
		String[] dialogButtonLabels;
		switch (kind) {
			case MessageDialog.ERROR:
			case MessageDialog.INFORMATION:
			case MessageDialog.WARNING: {
				dialogButtonLabels = new String[] { IDialogConstants.get().OK_LABEL };
				break;
			}
			case MessageDialog.CONFIRM: {
				dialogButtonLabels = new String[] { IDialogConstants.get().OK_LABEL, IDialogConstants.get().CANCEL_LABEL };
				break;
			}
			case MessageDialog.QUESTION: {
				dialogButtonLabels = new String[] { IDialogConstants.get().YES_LABEL, IDialogConstants.get().NO_LABEL };
				break;
			}
			case MessageDialog.QUESTION_WITH_CANCEL: {
				dialogButtonLabels = new String[] { IDialogConstants.get().YES_LABEL, IDialogConstants.get().NO_LABEL, IDialogConstants.get().CANCEL_LABEL };
				break;
			}
			default: {
				throw new IllegalArgumentException("Illegal value for kind in MessageDialog.open()");
			}
		}
		return dialogButtonLabels;
	}

	private static void open(final int kind, final Shell parent, final String title, final String message, final DialogCallback callback) {
		final String[] buttonLabels = getButtonLabels(kind);
		final MessageDialog dialog = new MessageDialog(parent, title, null, message, kind, buttonLabels, 0) {
			/** serialVersionUID */
			private static final long serialVersionUID = 1L;

			@Override
			public boolean close() {
				final boolean result = super.close();
				if (callback != null) {
					callback.dialogClosed(getReturnCode());
				}
				return result;
			}

			@Override
			protected int getShellStyle() {
				return super.getShellStyle() | SWT.SHEET;
			}
		};
		dialog.setBlockOnOpen(false);
		dialog.open();
	}

	public static void openConfirm(final Shell parent, final String title, final String message, final DialogCallback callback) {
		open(MessageDialog.CONFIRM, parent, title, message, callback);
	}

	public static void openError(final Shell parent, final String title, final String message, final DialogCallback callback) {
		open(MessageDialog.ERROR, parent, title, message, callback);
	}

	public static void openInformation(final Shell parent, final String title, final String message, final DialogCallback callback) {
		open(MessageDialog.INFORMATION, parent, title, message, callback);
	}

	public static void openQuestion(final Shell parent, final String title, final String message, final DialogCallback callback) {
		open(MessageDialog.QUESTION, parent, title, message, callback);
	}

	public static void openWarning(final Shell parent, final String title, final String message, final DialogCallback callback) {
		open(MessageDialog.WARNING, parent, title, message, callback);
	}

}