Java tutorial
/* GanttProject is an opensource project management tool. License: GPL3 Copyright (C) 2011 Dmitry Barashev 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 3 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 net.sourceforge.ganttproject.gui.options; import java.awt.BorderLayout; import java.awt.Component; import java.io.File; import java.io.IOException; import java.net.URISyntaxException; import java.net.URL; import java.text.DateFormat; import java.util.Arrays; import java.util.List; import java.util.Locale; import javax.swing.BorderFactory; import javax.swing.JEditorPane; import javax.swing.JPanel; import org.apache.commons.io.FileUtils; import net.sourceforge.ganttproject.GPLogger; import net.sourceforge.ganttproject.IGanttProject; import net.sourceforge.ganttproject.gui.NotificationManager; import net.sourceforge.ganttproject.gui.UIFacade; import net.sourceforge.ganttproject.gui.UIUtil; import net.sourceforge.ganttproject.language.GanttLanguage; import net.sourceforge.ganttproject.util.collect.Pair; import biz.ganttproject.core.option.ChangeValueEvent; import biz.ganttproject.core.option.ChangeValueListener; import biz.ganttproject.core.option.GPOptionGroup; import com.google.common.base.Joiner; import com.google.common.base.Strings; import com.google.common.collect.Lists; public class InterfaceOptionPageProvider extends OptionPageProviderBase { public static final String ID = "ui.general"; private JEditorPane myLabel; public InterfaceOptionPageProvider() { super(ID); } @Override public void init(IGanttProject project, final UIFacade uiFacade) { super.init(project, uiFacade); uiFacade.getLanguageOption().addChangeValueListener(new ChangeValueListener() { @Override public void changeValue(ChangeValueEvent event) { Locale selectedLocale = uiFacade.getLanguageOption().getSelectedValue(); if (selectedLocale != null && "gl".equals(selectedLocale.getLanguage().toLowerCase()) && myLabel != null) { Pair<Boolean, File> localeTest = checkLocale(selectedLocale); if (!localeTest.first() && localeTest.second() != null) { GanttLanguage i18n = GanttLanguage.getInstance(); myLabel.setVisible(true); myLabel.setText(i18n.formatText("optionPage.ui.general.localeInstallText", i18n.getText("optionPage.ui.general.localeInstallUrl"), localeTest.second().getAbsolutePath())); } } else if (myLabel != null && myLabel.isVisible()) { myLabel.setVisible(false); } } }); } @Override public GPOptionGroup[] getOptionGroups() { List<GPOptionGroup> groups = Lists.newArrayList(); groups.addAll(Arrays.asList(getUiFacade().getOptions())); return groups.toArray(new GPOptionGroup[groups.size()]); } @Override public boolean hasCustomComponent() { return true; } @Override public Component buildPageComponent() { OptionsPageBuilder builder = new OptionsPageBuilder(); builder.setUiFacade(getUiFacade()); Component component = builder.buildPage(getOptionGroups(), getPageID()); myLabel = UIUtil.createHtmlPane("", NotificationManager.DEFAULT_HYPERLINK_LISTENER); myLabel.setBorder(BorderFactory.createEmptyBorder()); myLabel.setVisible(false); JPanel wrapper = new JPanel(new BorderLayout()); wrapper.add(component, BorderLayout.NORTH); wrapper.add(myLabel, BorderLayout.SOUTH); return wrapper; } private static Pair<Boolean, File> checkLocale(Locale l) { if (Arrays.asList(DateFormat.getAvailableLocales()).contains(l)) { return Pair.create(Boolean.TRUE, null); } File extDir = getExtDir(); if (!extDir.exists()) { return Pair.create(Boolean.FALSE, null); } if (!extDir.isDirectory()) { return Pair.create(Boolean.FALSE, null); } if (extDir.canWrite()) { GPLogger.logToLogger("Java extensions directory " + extDir + " is writable"); URL libUrl = InterfaceOptionPageProvider.class.getResource("lib"); if (libUrl != null) { try { File galicianLocaleJar = new File(new File(libUrl.toURI()), "javagalician.jar"); File targetJar = new File(extDir, galicianLocaleJar.getName()); GPLogger.logToLogger("Locale extension " + galicianLocaleJar); if (galicianLocaleJar.exists() && !targetJar.exists()) { GPLogger.logToLogger("Exists. Installing now"); FileUtils.copyFileToDirectory(galicianLocaleJar, extDir); return Pair.create(Boolean.TRUE, extDir); } } catch (IOException e) { GPLogger.log(e); } catch (URISyntaxException e) { GPLogger.log(e); } } return Pair.create(Boolean.FALSE, extDir); } else { GPLogger.logToLogger("Java extensions directory " + extDir + " is not writable"); } return Pair.create(Boolean.FALSE, extDir); } private static File getExtDir() { File fallback = new File(System.getProperty("java.home"), Joiner.on(File.separatorChar).join("lib", "ext")); String extDirsProperty = System.getProperty("java.ext.dirs"); if (Strings.isNullOrEmpty(extDirsProperty)) { return fallback; } for (String s : extDirsProperty.split(File.pathSeparator)) { File file = new File(s); if (!file.exists()) { continue; } if (!file.isDirectory()) { continue; } if (file.canWrite()) { return file; } fallback = file; } return fallback; } }