NIHVIVO-3295 show the correct placeholder image for profiles that are displayed with the page - does not cover profiles that are obtained by AJAX calls.

src/edu/cornell/mannlib/vitro/webapp/utils/ImageUtil.java

@@ -0,0 +1,69 @@
+/* $This file is distributed under the terms of the license in /doc/license.txt$ */
+
+package edu.cornell.mannlib.vitro.webapp.utils;
+
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Map.Entry;
+
+import edu.cornell.mannlib.vitro.webapp.controller.VitroRequest;
+import edu.cornell.mannlib.vitro.webapp.dao.IndividualDao;
+import edu.cornell.mannlib.vitro.webapp.dao.VitroVocabulary;
+
+/**
+ * Some static methods that help in dealing with image files.
+ * 
+ * So far, we only have methods that obtain the placeholder image for an
+ * Individual that has no image of its own.
+ * 
+ */
+public class ImageUtil {
+	private static final String DEFAULT_IMAGE_PATH = "/images/placeholders/thumbnail.jpg";
+
+	private static final Map<String, String> DEFAULT_IMAGE_PATHS_BY_TYPE = initImagePaths();
+
+	private static Map<String, String> initImagePaths() {
+		Map<String, String> map = new HashMap<String, String>();
+		map.put("http://xmlns.com/foaf/0.1/Person",
+				"/images/placeholders/person.thumbnail.jpg");
+		map.put(VitroVocabulary.USERACCOUNT,
+				"/images/placeholders/person.thumbnail.jpg");
+		return Collections.unmodifiableMap(map);
+	}
+
+	/**
+	 * If we have a placeholder image for this exact type, return it. Otherwise,
+	 * return the default.
+	 */
+	public static String getPlaceholderImagePathForType(String typeUri) {
+		for (Entry<String, String> entry : DEFAULT_IMAGE_PATHS_BY_TYPE
+				.entrySet()) {
+			if (typeUri.equals(entry.getKey())) {
+				return entry.getValue();
+			}
+		}
+		return DEFAULT_IMAGE_PATH;
+	}
+
+	/**
+	 * If there is a placeholder image for any type that this Individual
+	 * instantiates, return that image. Otherwise, return the default.
+	 */
+	public static String getPlaceholderImagePathForIndividual(
+			VitroRequest vreq, String individualUri) {
+		IndividualDao indDao = vreq.getWebappDaoFactory().getIndividualDao();
+		for (Entry<String, String> entry : DEFAULT_IMAGE_PATHS_BY_TYPE
+				.entrySet()) {
+			if (indDao.isIndividualOfClass(entry.getKey(), individualUri)) {
+				return entry.getValue();
+			}
+		}
+		return DEFAULT_IMAGE_PATH;
+	}
+
+	/** Never need to instantiate this -- all methods are static. */
+	private ImageUtil() {
+		// Nothing to do
+	}
+}