X-Git-Url: https://git.pterodactylus.net/?p=Sone.git;a=blobdiff_plain;f=src%2Fmain%2Fjava%2Fnet%2Fpterodactylus%2Fsone%2Ftemplate%2FImageAccessor.java;fp=src%2Fmain%2Fjava%2Fnet%2Fpterodactylus%2Fsone%2Ftemplate%2FImageAccessor.java;h=1c06d31bc4e5af5cca78a27d2c08843bdec21f47;hp=0000000000000000000000000000000000000000;hb=9a884536fcf2d56a822b8db44bbc9ca56a61cea2;hpb=2a3193f488ecff7496d7464e2e2213c82a2708a3

diff --git a/src/main/java/net/pterodactylus/sone/template/ImageAccessor.java b/src/main/java/net/pterodactylus/sone/template/ImageAccessor.java
new file mode 100644
index 0000000..1c06d31
--- /dev/null
+++ b/src/main/java/net/pterodactylus/sone/template/ImageAccessor.java
@@ -0,0 +1,64 @@
+/*
+ * Sone - ImageAccessor.java - Copyright © 2011 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 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, see <http://www.gnu.org/licenses/>.
+ */
+
+package net.pterodactylus.sone.template;
+
+import net.pterodactylus.sone.data.Album;
+import net.pterodactylus.sone.data.Image;
+import net.pterodactylus.util.template.Accessor;
+import net.pterodactylus.util.template.ReflectionAccessor;
+import net.pterodactylus.util.template.TemplateContext;
+
+/**
+ * {@link Accessor} implementation for {@link Image} objects. It adds the
+ * following properties:
+ * <ul>
+ * <li>{@code previous}: returns the previous image in the image’s album, or
+ * {@code null} if the image is the first image of its album.</li>
+ * <li>{@code next}: returns the next image in the image’s album, or {@code
+ * null} if the image is the last image of its album.</li>
+ * </ul>
+ *
+ * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
+ */
+public class ImageAccessor extends ReflectionAccessor {
+
+	/**
+	 * {@inheritDoc}
+	 */
+	@Override
+	public Object get(TemplateContext templateContext, Object object, String member) {
+		Image image = (Image) object;
+		if ("next".equals(member)) {
+			Album album = image.getAlbum();
+			int imagePosition = album.getImages().indexOf(image);
+			if (imagePosition < album.getImages().size() - 1) {
+				return album.getImages().get(imagePosition + 1);
+			}
+			return null;
+		} else if ("previous".equals(member)) {
+			Album album = image.getAlbum();
+			int imagePosition = album.getImages().indexOf(image);
+			if (imagePosition > 0) {
+				return album.getImages().get(imagePosition - 1);
+			}
+			return null;
+		}
+		return super.get(templateContext, object, member);
+	}
+
+}