org.eclipse.net4j.util.ui.confirmation.ConfirmationDialog.java Source code

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Here is the source code for org.eclipse.net4j.util.ui.confirmation.ConfirmationDialog.java

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/*
 * Copyright (c) 2013, 2015 Eike Stepper (Berlin, Germany) 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:
 *    Christian W. Damus (CEA LIST) - initial API and implementation
 */
package org.eclipse.net4j.util.ui.confirmation;

import org.eclipse.net4j.util.confirmation.Confirmation;

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

import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.List;
import java.util.Set;

/**
 * @author Christian W. Damus (CEA LIST)
 *
 * @since 3.4
 */
public class ConfirmationDialog extends MessageDialog {
    public ConfirmationDialog(Shell shell, String title, String message, Set<Confirmation> acceptableResponses,
            Confirmation suggestedResponse) {
        this(shell, title, message, getButtonLabels(inOrder(acceptableResponses)),
                inOrder(acceptableResponses).indexOf(suggestedResponse));
    }

    private ConfirmationDialog(Shell shell, String title, String message, String[] buttonLabels, int defaultIndex) {
        super(shell, title, null, message, MessageDialog.CONFIRM, buttonLabels, defaultIndex);
    }

    public static Confirmation openConfirm(Shell shell, String title, String message,
            Set<Confirmation> acceptableResponses, Confirmation suggestedResponse) {
        List<Confirmation> inOrder = inOrder(acceptableResponses);
        String[] buttonLabels = getButtonLabels(inOrder);
        int defaultIndex = inOrder.indexOf(suggestedResponse);

        ConfirmationDialog dialog = new ConfirmationDialog(shell, title, message, buttonLabels, defaultIndex);
        int index = dialog.open();
        return index == SWT.DEFAULT ? suggestedResponse : inOrder.get(index);
    }

    private static String[] getButtonLabels(List<Confirmation> acceptableResponses) {
        List<String> result = new ArrayList<String>(acceptableResponses.size());

        for (Confirmation confirmation : acceptableResponses) {
            result.add(getLabel(confirmation));
        }

        return result.toArray(new String[result.size()]);
    }

    private static List<Confirmation> inOrder(Collection<Confirmation> confirmations) {
        List<Confirmation> result = new ArrayList<Confirmation>(confirmations);
        Collections.sort(result);
        return result;
    }

    private static String getLabel(Confirmation confirmation) {
        switch (confirmation) {
        case OK:
            return IDialogConstants.OK_LABEL;
        case CANCEL:
            return IDialogConstants.CANCEL_LABEL;
        case YES:
            return IDialogConstants.YES_LABEL;
        case NO:
            return IDialogConstants.NO_LABEL;
        }

        throw new IllegalArgumentException(confirmation.name());
    }
}