Dépôt officiel du code source de l'ERP OpenConcerto

/*

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.

 *

 * Copyright 2011 OpenConcerto, by ILM Informatique. All rights reserved.

 *

 * The contents of this file are subject to the terms of the GNU General Public License Version 3

 * only ("GPL"). You may not use this file except in compliance with the License. You can obtain a

 * copy of the License at http://www.gnu.org/licenses/gpl-3.0.html See the License for the specific

 * language governing permissions and limitations under the License.

 *

 * When distributing the software, include this License Header Notice in each file.

 */

 package org.jopendocument.link;

import org.openconcerto.utils.CollectionUtils;

import java.io.File;

import java.io.FileNotFoundException;

import java.io.IOException;

import java.net.MalformedURLException;

import java.net.URL;

import java.net.URLClassLoader;

import java.util.List;

import java.util.Map;

import java.util.WeakHashMap;

/**

 * Connexion avec une instance d'OO

 *

 * @author Administrateur

 */

public abstract class OOConnexion {

    // weak to let go OOInstallation instances

    private static final Map<OOInstallation, ClassLoader> loaders = new WeakHashMap<OOInstallation, ClassLoader>(2);

    // TODO use OOInstallation.getVersion()

    // for now only one version (but also works with OO2)

    private static final String OO_VERSION = "3";

    static {

        // needed to access .class inside a jar inside a jar.

        org.openconcerto.utils.protocol.Helper.register();

    }

    static private final URL[] getURLs(final OOInstallation ooInstall) {

        final List<URL> res = ooInstall.getURLs(CollectionUtils.createSet("ridl.jar", "jurt.jar", "juh.jar", "unoil.jar"));

        final String jarName = "OO" + OO_VERSION + "-link.jar";

        final URL resource = OOConnexion.class.getResource(jarName);

        if (resource == null)

            // Did you run ant in the OO3Link project (or in ours) ?

            throw new IllegalStateException("Missing " + jarName);

        res.add(org.openconcerto.utils.protocol.Helper.toJarJar(resource));

        return res.toArray(new URL[res.size()]);

    }

    static private final ClassLoader getLoader(final OOInstallation ooInstall) {

        ClassLoader res = loaders.get(ooInstall);

        if (res == null) {

            // pass our classloader otherwise the system class loader will be used. This won't work

            // in webstart since the classpath is loaded by JNLPClassLoader, thus a class loaded by

            // res couldn't refer to the classpath (e.g. this class) but only to the java library.

            res = new URLClassLoader(getURLs(ooInstall), OOConnexion.class.getClassLoader());

            loaders.put(ooInstall, res);

        }

        return res;

    }

    /**

     * Return a connection to the default OpenOffice installation.

     *

     * @return a connection to the default OpenOffice or <code>null</code> if none is found.

     * @throws IllegalStateException if an error occurs while searching.

     */

    static public OOConnexion create() throws IllegalStateException {

        final OOInstallation ooInstall;

        try {

            ooInstall = OOInstallation.getInstance();

        } catch (IOException e) {

            throw new IllegalStateException("Couldn't find default OO installation", e);

        }

        return create(ooInstall);

    }

    static public OOConnexion create(final OOInstallation ooInstall) throws IllegalStateException {

        if (ooInstall == null)

            return null;

        try {

            final Class<?> c = getLoader(ooInstall).loadClass("org.jopendocument.link" + OO_VERSION + ".OOConnexion");

            return (OOConnexion) c.getConstructor(OOInstallation.class).newInstance(ooInstall);

        } catch (Exception e) {

            throw new IllegalStateException("Couldn't create OOCOnnexion", e);

        }

    }

    protected abstract Component loadDocumentFromURLAsync(final String url, final boolean hidden);

    /**

     * Load a document in OpenOffice.

     *

     * @param f the file to load.

     * @param hidden <code>true</code> if no frame should be visible.

     * @return the new component.

     * @throws IOException if an error occurs.

     */

    public final Component loadDocument(final File f, final boolean hidden) throws IOException {

        if (!f.exists())

            throw new FileNotFoundException(f.getAbsolutePath());

        return loadDocumentFromURLAsync(convertToUrl(f.getAbsolutePath()), hidden);

    }

    protected abstract String convertToUrl(String path) throws MalformedURLException;

    public abstract void closeConnexion();

    /**

     * Whether the bridge is closed.

     *

     * @return <code>true</code> if {@link #closeConnexion()} was called or OpenOffice is now longer

     *         running.

     */

    public abstract boolean isClosed();

}