net.refractions.udig.InstallJaiStartup.java Source code

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Here is the source code for net.refractions.udig.InstallJaiStartup.java

Source

/* uDig - User Friendly Desktop Internet GIS client
 * http://udig.refractions.net
 * (C) 2004, Refractions Research Inc.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation;
 * version 2.1 of the License.
 *
 * This library 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
 * Lesser General Public License for more details.
 */
package net.refractions.udig;

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.lang.reflect.InvocationTargetException;
import java.text.MessageFormat;

import net.refractions.udig.core.internal.CorePlugin;

import org.eclipse.core.runtime.IProduct;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.Platform;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.dialogs.ProgressMonitorDialog;
import org.eclipse.jface.operation.IRunnableWithProgress;
import org.eclipse.swt.widgets.Display;
import org.eclipse.ui.PlatformUI;

/**
 * This startup checks to see if the correct version of JAI and Image IO is installed and installs
 * it in ~/Library/Java/Extensions/.
 * 
 * @author jesse
 * @since 1.1.0
 */
public class InstallJaiStartup implements IRunnableWithProgress, Runnable {

    private final class RunInProgressDialog implements Runnable {
        public void run() {
            dialog = new ProgressMonitorDialog(PlatformUI.getWorkbench().getDisplay().getActiveShell());

            try {
                dialog.run(false, false, InstallJaiStartup.this);

                IProduct product = Platform.getProduct();
                String productName;
                if (product == null) {
                    CorePlugin.log("there is no product so default to uDig", null);
                    productName = "uDig";
                } else {
                    productName = product.getName();
                }

                MessageDialog d = new MessageDialog(dialog.getShell(), Messages.InstallJaiStartup_1, null,
                        Messages.InstallJaiStartup_2, MessageDialog.INFORMATION,
                        new String[] { MessageFormat.format(Messages.InstallJaiStartup_3, productName) }, 0);
                d.open();
                PlatformUI.getWorkbench().restart();
            } catch (Exception e1) {
                CorePlugin.log("Unable to copy JAI jars to user library", e1); //$NON-NLS-1$
            }
        }
    }

    private ProgressMonitorDialog dialog;

    // copy one file to another. Both must be files and not directories
    private void copy(InputStream source, File dest) throws IOException {
        if (!dest.exists()) {
            dest.getParentFile().mkdirs();
            dest.createNewFile();
        }

        BufferedInputStream in = new BufferedInputStream(source);
        BufferedOutputStream out = new BufferedOutputStream(new FileOutputStream(dest));

        byte[] buf = new byte[1024];
        int len = in.read(buf);
        while (len > 0) {
            out.write(buf, 0, len);
            len = in.read(buf);
        }
        in.close();
        out.close();
    }

    public void run() {
        try {
            Class.forName("com.sun.media.jai.operator.ImageReadDescriptor"); //$NON-NLS-1$
            // JAI is installed
        } catch (ClassNotFoundException e) {
            RunInProgressDialog progressDialog = new RunInProgressDialog();
            if (Display.getCurrent() != null) {
                progressDialog.run();
            } else {
                Display display = Display.getCurrent();
                if (display == null) {
                    display = Display.getDefault();
                }
                if (display != null) {
                    display.asyncExec(progressDialog);
                }
            }
        }
    }

    public void run(IProgressMonitor monitor) throws InvocationTargetException, InterruptedException {

        String[] files = new String[] { "clibwrapper_jiio.jar", //$NON-NLS-1$
                "jai_codec.jar", //$NON-NLS-1$
                "jai_core.jar", //$NON-NLS-1$
                "jai_imageio.jar", //$NON-NLS-1$t
                "mlibwrapper_jai.jar" //$NON-NLS-1$
        };

        monitor.beginTask("", files.length + 1); //$NON-NLS-1$
        monitor.worked(1);

        File destDir = new File(System.getProperty("user.home") + "/Library/Java/Extensions/"); //$NON-NLS-1$//$NON-NLS-2$
        destDir.mkdirs();

        try {
            for (String string : files) {
                monitor.setTaskName(MessageFormat.format(Messages.InstallJaiStartup_0, string));
                InputStream source = InstallJaiStartup.class.getResourceAsStream(string);
                File dest = new File(destDir, string);

                copy(source, dest);
                monitor.worked(1);
            }
            monitor.done();

        } catch (IOException e1) {
            throw new RuntimeException(e1);
        }
    }
}