Merge branch 'release-0.11'

[jSite.git] / src / main / java / de / todesbaum / jsite / i18n / I18nContainer.java

diff --git a/src/main/java/de/todesbaum/jsite/i18n/I18nContainer.java b/src/main/java/de/todesbaum/jsite/i18n/I18nContainer.java
new file mode 100644 (file)
index 0000000..9683dd3
--- /dev/null
+++ b/src/main/java/de/todesbaum/jsite/i18n/I18nContainer.java
@@ -0,0 +1,91 @@
+/*
+ * jSite - I18nContainer.java - Copyright © 2007–2012 David Roden
+ *
+ * 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., 59 Temple
+ * Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+package de.todesbaum.jsite.i18n;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.Iterator;
+import java.util.List;
+
+/**
+ * Container that collects {@link Runnable}s that change the texts of GUI
+ * components when the current locale has changed.
+ *
+ * @author David ‘Bombe’ Roden <bombe@freenetproject.org>
+ */
+public class I18nContainer implements Iterable<Runnable> {
+
+       /** The container singleton. */
+       private static final I18nContainer singleton = new I18nContainer();
+
+       /** The list of runnables that change texts. */
+       private final List<Runnable> i18nRunnables = Collections.synchronizedList(new ArrayList<Runnable>());
+
+       /**
+        * The list of runnables that change texts and run after
+        * {@link #i18nRunnables}.
+        */
+       private final List<Runnable> i18nPostRunnables = Collections.synchronizedList(new ArrayList<Runnable>());
+
+       /**
+        * Returns the singleton instance.
+        *
+        * @return The singleton instance
+        */
+       public static I18nContainer getInstance() {
+               return singleton;
+       }
+
+       /**
+        * Registers an i18n runnable that is run when the current locale has
+        * changed.
+        *
+        * @param i18nRunnable
+        *            The runnable to register
+        */
+       public void registerRunnable(Runnable i18nRunnable) {
+               i18nRunnables.add(i18nRunnable);
+       }
+
+       /**
+        * Registers a {@link Runnable} that changes texts when the current locale
+        * has changed and runs after {@link #i18nRunnables} have run.
+        *
+        * @param i18nPostRunnable
+        *            The runnable to register
+        */
+       public void registerPostRunnable(Runnable i18nPostRunnable) {
+               i18nPostRunnables.add(i18nPostRunnable);
+       }
+
+       /**
+        * {@inheritDoc}
+        * <p>
+        * Returns a combined list of {@link #i18nRunnables} and
+        * {@link #i18nPostRunnables}, in that order.
+        */
+       @Override
+       public Iterator<Runnable> iterator() {
+               List<Runnable> allRunnables = new ArrayList<Runnable>();
+               allRunnables.addAll(i18nRunnables);
+               allRunnables.addAll(i18nPostRunnables);
+               return allRunnables.iterator();
+       }
+
+}