org.easotope.client.core.ModalMessageWithViewChange.java Source code

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Here is the source code for org.easotope.client.core.ModalMessageWithViewChange.java

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/*
 * Copyright  2016-2018 by Devon Bowen.
 *
 * This file is part of Easotope.
 *
 * Easotope is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, version 3 of the License.
 *
 * Additional permission under GNU GPL version 3 section 7:
 * If you modify this Program, or any covered work, by linking or combining
 * it with the Eclipse Rich Client Platform (or a modified version of that
 * library), containing parts covered by the terms of the Eclipse Public
 * License, the licensors of this Program grant you additional permission
 * to convey the resulting work. Corresponding Source for a non-source form
 * of such a combination shall include the source code for the parts of the
 * Eclipse Rich Client Platform used as well as that of the covered work.
 *
 * Easotope is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Easotope. If not, see <http://www.gnu.org/licenses/>.
 */

package org.easotope.client.core;

import java.util.ArrayList;

import org.easotope.client.Messages;
import org.eclipse.e4.ui.model.application.ui.advanced.MPerspective;
import org.eclipse.e4.ui.model.application.ui.basic.MPart;
import org.eclipse.e4.ui.workbench.modeling.EPartService;
import org.eclipse.e4.ui.workbench.modeling.EPartService.PartState;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Shell;

public class ModalMessageWithViewChange {
    private static ModalMessageWithViewChange instance = new ModalMessageWithViewChange();
    private ArrayList<ModalParameters> list = new ArrayList<ModalParameters>();

    public static void raiseInfo(Shell shell, EPartService partService, MPerspective perspective, MPart part,
            String message) {
        instance.raiseInfoPrivate(shell, partService, perspective, part, message);
    }

    public static void raiseError(Shell shell, EPartService partService, MPerspective perspective, MPart part,
            String message) {
        instance.raiseErrorPrivate(shell, partService, perspective, part, message);
    }

    private synchronized void raiseInfoPrivate(final Shell shell, final EPartService partService,
            final MPerspective perspective, final MPart part, final String message) {
        list.add(list.size(), new ModalParameters(shell, partService, perspective, part, MessageDialog.INFORMATION,
                Messages.modalMessage_genericInfoTitle, message));

        if (list.size() == 1) {
            raise();
        }
    }

    private synchronized void raiseErrorPrivate(final Shell shell, final EPartService partService,
            final MPerspective perspective, final MPart part, final String message) {
        list.add(list.size(), new ModalParameters(shell, partService, perspective, part, MessageDialog.ERROR,
                Messages.modalMessage_genericErrorTitle, message));

        if (list.size() == 1) {
            raise();
        }
    }

    private synchronized void raise() {
        while (list.size() != 0) {
            ModalParameters currentParameters = list.get(0);

            if (currentParameters.part.isVisible()) {
                if (currentParameters.partService.getActivePart() != currentParameters.part) {
                    MessageDialog.open(currentParameters.kind, currentParameters.shell, currentParameters.title,
                            Messages.modalMessage_inactive, SWT.SHEET);

                    currentParameters.partService.switchPerspective(currentParameters.perspective);
                    currentParameters.partService.showPart(currentParameters.part, PartState.ACTIVATE);
                }

                MessageDialog.open(currentParameters.kind, currentParameters.shell, currentParameters.title,
                        currentParameters.message, SWT.SHEET);
            }

            list.remove(0);
        }
    }

    class ModalParameters {
        Shell shell;
        EPartService partService;
        MPerspective perspective;
        MPart part;
        int kind;
        String title;
        String message;

        ModalParameters(Shell shell, EPartService partService, MPerspective perspective, MPart part, int kind,
                String title, String message) {
            this.shell = shell;
            this.partService = partService;
            this.perspective = perspective;
            this.part = part;
            this.kind = kind;
            this.title = title;
            this.message = message;
        }
    }
}