com.bdaum.zoom.rcp.internal.intro.VersionChangeDetector.java Source code

Introduction

Here is the source code for com.bdaum.zoom.rcp.internal.intro.VersionChangeDetector.java

Source

/*******************************************************************************
 * Copyright (c) 2009-2018 Berthold Daum.
 * 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:
 *     Berthold Daum - initial API and implementation
 *******************************************************************************/
package com.bdaum.zoom.rcp.internal.intro;

import org.eclipse.core.runtime.Platform;
import org.eclipse.jface.preference.IPreferenceStore;
import org.eclipse.ui.IPerspectiveDescriptor;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.intro.IntroContentDetector;
import org.osgi.framework.Version;

import com.bdaum.zoom.rcp.internal.RcpActivator;
import com.bdaum.zoom.rcp.internal.PreferenceConstants;

public class VersionChangeDetector extends IntroContentDetector {

    @Override
    public boolean isNewContentAvailable() {
        if (isVersionChange()) {
            IWorkbenchWindow activeWorkbenchWindow = PlatformUI.getWorkbench().getActiveWorkbenchWindow();
            if (activeWorkbenchWindow != null) {
                IWorkbenchPage page = activeWorkbenchWindow.getActivePage();
                if (page != null) {
                    IPerspectiveDescriptor currentPerspective = page.getPerspective();
                    for (IPerspectiveDescriptor perspective : page.getOpenPerspectives()) {
                        page.setPerspective(perspective);
                        page.resetPerspective();
                    }
                    page.setPerspective(currentPerspective);
                }
            }
            return true;
        }
        return false;
    }

    private static boolean isVersionChange() {
        IPreferenceStore preferenceStore = RcpActivator.getDefault().getPreferenceStore();
        String v = preferenceStore.getString(PreferenceConstants.PREVIOUSVERSION);
        if (v == null || v.isEmpty()) {
            preferenceStore.putValue(PreferenceConstants.PREVIOUSVERSION,
                    Platform.getProduct().getDefiningBundle().getVersion().toString());
            return true;
        }
        Version oldVersion = new Version(v);
        Version version = Platform.getProduct().getDefiningBundle().getVersion();
        if (version.getMajor() > oldVersion.getMajor()
                || (version.getMajor() == oldVersion.getMajor() && version.getMinor() > oldVersion.getMinor())) {
            preferenceStore.putValue(PreferenceConstants.PREVIOUSVERSION, version.toString());
            return true;
        }
        return false;
    }
}