| gvSIG desktop 1

/* gvSIG. Geographic Information System of the Valencian Government

 *

 * Copyright (C) 2007-2008 Infrastructures and Transports Department

 * of the Valencian Government (CIT)

 * 

 * This program 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; either version 2

 * of the License, or (at your option) any later version.

 * 

 * This program 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 this program; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, 

 * MA  02110-1301, USA.

 * 

 */

package org.gvsig.mkmvnproject;

import java.awt.Component;

import java.awt.GridBagConstraints;

import java.io.File;

import java.io.IOException;

import java.net.URL;

import javax.swing.JOptionPane;

import org.apache.tools.ant.BuildListener;

import org.apache.tools.ant.DefaultLogger;

import org.apache.tools.ant.Project;

import org.apache.tools.ant.ProjectHelper;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

import org.gvsig.andami.PluginServices;

import org.gvsig.andami.messages.NotificationManager;

import org.gvsig.andami.plugins.Extension;

import org.gvsig.andami.ui.mdiManager.IWindow;

import org.gvsig.i18n.Messages;

import org.gvsig.mkmvnproject.gui.CreatePluginConsoleWindow;

import org.gvsig.mkmvnproject.gui.settings.PlatformPropertiesWindow;

/**

 * Extension to launch the project creation from templates.

 * 

 * @author gvSIG team

 * @version $Id$

 */

public class MakeMavenProjectExtension extends Extension {

    private static final String ANT_BUILD_FILE = "mkmvnproject.xml";

    private static final String ANT_CHECK_JDK = "checkjdk.xml";

        private static final String ANT_TARGET = "mkproject";

        public static final String GVSIG_PLATFORM_PROPERTIES_FILE_NAME =

            ".gvsig.platform.properties";

        private static final Logger LOG = LoggerFactory

                        .getLogger(MakeMavenProjectExtension.class);

        private boolean enabled = true;

        private final Object lock = new Object();

        public void execute(String actionCommand) {

            if (!checkJDK()) {

                return;

            }

            if (!checkPlatformProperties()) {

                return;

            }

        // ==========================================================

                // TODO: add support to parallel executions in Andami??

        // Create messages console

            CreatePluginConsoleWindow console = null;

        if (console == null) {

            try {

                console = new CreatePluginConsoleWindow();

            } catch (IOException e) {

                NotificationManager.addWarning("Error creating the console", e);

            }

        }

        if (console != null) {

            PluginServices.getMDIManager().addWindow(console, GridBagConstraints.LAST_LINE_START);

        }

                try {

                        // Disable extension so it can't be executed again.

                        synchronized (lock) {

                                enabled = false;

                        }

                        new CreatePluginThread(console).start();

                } finally {

                        synchronized (lock) {

                                // create plugin process finish. Enable extension.

                                enabled = true;

                        }

                }

        }

        /**

         * Checks existence of file:

         * 

         * USER_HOME/.gvsig.platform.properties

         * 

         * If not present, show text area with suggested content.

         * 

     * @return whether the mentioned file is present or the

     * user has created it here and accepts to continue.

     *  

     */

    private boolean checkPlatformProperties() {

        String user_home = System.getProperty("user.home");

        File the_file = new File(

            user_home +

            File.separator +

            GVSIG_PLATFORM_PROPERTIES_FILE_NAME);

        Component parent_window = getActiveWindowComponent();

        try {

            if (the_file.exists()) {

                // ok file exists

                LOG.info("Found platform properties file: "

                    + the_file.getAbsolutePath());

                return true;

            }

            boolean is_windows = isThisWindows();

            PlatformPropertiesWindow ppw = new PlatformPropertiesWindow(

                the_file, is_windows);

            PluginServices.getMDIManager().addCentredWindow(ppw);

            // it's a modal dialog

            return ppw.validSettings();

        } catch (Exception ex) {

            String _msg =

                Messages.getText("_Error_while_checking_platform_properties")

                + "\n\n[ " + ex.getMessage() + " ]";

            String _tit = Messages.getText(

                "_Checking_platform_properties");

            JOptionPane.showMessageDialog(

                parent_window,

                _msg, _tit,

                JOptionPane.ERROR_MESSAGE);

        }

        return false;

    }

    /**

     * @return whether we are running on a windows system

     */

    private boolean isThisWindows() {

        String os = System.getProperty("os.name").toLowerCase();

        return (os.indexOf("win") >= 0);

    }

    /**

     * Check and possibly show JDK and JAVA_HOME settings and

     * prompt user with suggestion.

     * 

     * @return whether JDK is detected or user accepts to

     * continue anyway

     */

    private boolean checkJDK() {

        boolean this_is_jdk = false;

        try {

            this_is_jdk = jdkAvailable();

        } catch (Exception ex) {

            LOG.info("While searching for JDK: " + ex.getMessage());

            this_is_jdk = false;

        }

        if (this_is_jdk) {

            return true;

        }

        String env_j_h = System.getenv("JAVA_HOME");

        String jdk_str = null;

        if (this_is_jdk) {

            jdk_str = Messages.getText("_gvSIG_is_running_on_JDK");

        } else {

            jdk_str = Messages.getText("_gvSIG_is_not_running_on_JDK");

        }

        String jh_str = null;

        if (env_j_h == null) {

            jh_str = Messages.getText("_JAVA_HOME_is_not_set");

        } else {

            jh_str = Messages.getText("_JAVA_HOME_is_set_to")

                + " '" + env_j_h + "'";

        }

        String recomm = "";

        if (true) { // !this_is_jdk && env_j_h == null) {

            recomm = "\n\n"

                + Messages.getText("_Requirements_for_this_plugin") + ":\n\n"

                + "- " + Messages.getText("_On_Linux_make_JAVA_HOME_point_to_JDK_1_5_higher");

            recomm = recomm + ".    \n- "

            + Messages.getText("_On_Windows_run_JDK_use_devel_exe") + ".";

        }

        String tot_msg = Messages.getText("_Detected_settings") + ":"

            + "\n\n"

            + "- " + jdk_str + "\n"

            + "- " + jh_str + "     " + recomm + "\n\n"

                + Messages.getText("_Continue_question");

        int opt = JOptionPane.showConfirmDialog(

            null, // getActiveWindowComponent(),

            tot_msg,

            Messages.getText("_Make_maven_project_plugin") + " - " + 

            Messages.getText("_Searching_JDK"),

            JOptionPane.YES_NO_OPTION,

            (recomm.length() == 0) ?

                JOptionPane.INFORMATION_MESSAGE : JOptionPane.WARNING_MESSAGE

            );

        return (opt == JOptionPane.YES_OPTION);

    }

    /**

     * @return

     */

    private Component getActiveWindowComponent() {

        IWindow iw = PluginServices.getMDIManager().getActiveWindow();

        if (iw instanceof Component) {

            return (Component) iw;

        } else {

            return null;

        }

    }

    private boolean jdkAvailable() throws Exception {

        ClassLoader loader = this.getClass().getClassLoader();

        URL class_file_url = loader.getResource("compilationcheck/DummyClass.class");

        File class_file = null;

        // deleting compiled test file if existed

        if (class_file_url != null) {

            class_file = new File(class_file_url.getFile());

            if (class_file.exists()) {

                class_file.delete();

            }

        }

        URL build = loader.getResource("scripts/" + ANT_CHECK_JDK);

        String execut = null;

        /*

        // first attempt: javac from JAVA_HOME

        execut =

            System.getenv().get("JAVA_HOME")

            + File.separator + "bin" + File.separator + "javac";

        if (execut != null) {

            this.runScript(build, "default", null, "executable", execut);

            class_file_url = loader.getResource("compilationcheck/DummyClass.class");

            if (class_file_url != null) {

                // OK, test file is not compiled

                return true;

            }

        }

        */

        // second attempt: java.home (jre)

        execut = System.getProperty("java.home");

        int ind = execut.lastIndexOf(File.separator);

        // one up, then bin/javac

        execut = execut.substring(0, ind)

            + File.separator

            + "bin" + File.separator + "javac";

        this.runScript(build, "default", null, "executable", execut);

        class_file_url = loader.getResource("compilationcheck/DummyClass.class");

        // if test file not compiled, then false

        return (class_file_url != null);

    }

    /**

         * Thread to launch the ant base plugin creation project.

         * 

         * @author gvSIG Team

         * @version $Id$

         */

        private final class CreatePluginThread extends Thread {

                private final CreatePluginConsoleWindow console;

                /**

                 * Constructor.

                 * 

                 * @param console

                 */

                public CreatePluginThread(CreatePluginConsoleWindow console) {

                        this.console = console;

                        setName("Create plugin execution thread");

                        setDaemon(true);

                }

                @Override

                public void run() {

                        DefaultLogger log = new DefaultLogger();

                        log.setMessageOutputLevel(Project.MSG_INFO);

                        if (console != null) {

                                log.setErrorPrintStream(console.getErrorPrintStream());

                                log.setOutputPrintStream(console.getPrintStream());

                        } else {

                                LOG.warn("Console window not available, will use the default console for Ant");

                                log.setErrorPrintStream(System.err);

                                log.setOutputPrintStream(System.out);

                        }

            ClassLoader loader = this.getClass().getClassLoader();

            URL build = loader.getResource("scripts/" + ANT_BUILD_FILE);

            runScript(build, ANT_TARGET, log);

                }

        }

        private void runScript(

                URL build,

                String target,

                BuildListener blistener) {

            runScript(build, target, blistener, null, null);

        }

        private void runScript(

            URL build,

            String target,

            BuildListener blistener,

            String prop, String val) {

        File file = new File(build.getFile());

        final Project ant = new Project();

        if (blistener != null) {

            ant.addBuildListener(blistener);

        }

        ant.setUserProperty("ant.file", file.getAbsolutePath());

        if (prop != null && val != null) {

            ant.setUserProperty(prop, val);

        }

        ant.init();

        ProjectHelper.getProjectHelper().parse(ant, file);

        LOG.info("Starting ant task with the file {} and the target {}",

                file, target);

        ant.executeTarget(target);

        }

        public void initialize() {

                // Nothing to do

        }

        public boolean isEnabled() {

                return enabled;

        }

        public boolean isVisible() {

                return true;

        }

}