Introduced SimpleSettingsStorageManager which reads Settings from the

URL only

java/com.sap.sse.security.ui/src/main/java/com/sap/sse/security/ui/settings/SimpleSettingsStorageManager.java

@@ -0,0 +1,77 @@
+package com.sap.sse.security.ui.settings;
+
+import com.google.gwt.json.client.JSONObject;
+import com.google.gwt.json.client.JSONValue;
+import com.google.gwt.user.client.rpc.AsyncCallback;
+import com.sap.sse.common.settings.Settings;
+import com.sap.sse.common.settings.generic.GenericSerializableSettings;
+import com.sap.sse.common.settings.generic.SettingsMap;
+import com.sap.sse.gwt.client.shared.perspective.OnSettingsLoadedCallback;
+import com.sap.sse.gwt.client.shared.perspective.SettingsStorageManager;
+import com.sap.sse.gwt.settings.SettingsToUrlSerializer;
+
+/**
+ * This {@link SettingsStorageManager} implementation only reads settings from the URL.
+ * 
+ * @param <S>
+ *            The {@link Settings} type of the settings of the root component/perspective containing all the settings
+ *            for itself and its subcomponents
+ * @see SettingsStorageManager
+ */
+public class SimpleSettingsStorageManager<S extends Settings> implements SettingsStorageManager<S> {
+    private final SettingsToUrlSerializer urlSerializer = new SettingsToUrlSerializer();
+    
+    /**
+     * {@inheritDoc}
+     */
+    public void retrieveDefaultSettings(S defaultSettings, final OnSettingsLoadedCallback<S> asyncCallback) {
+        asyncCallback.onSuccess(deserializeFromCurrentUrl(defaultSettings));
+    }
+
+    @SuppressWarnings("unchecked")
+    protected final S deserializeFromCurrentUrl(S defaultSettings) {
+        if (defaultSettings instanceof GenericSerializableSettings) {
+            defaultSettings = (S) urlSerializer
+                    .deserializeFromCurrentLocation((GenericSerializableSettings) defaultSettings);
+        } else if (defaultSettings instanceof SettingsMap) {
+            defaultSettings = (S) urlSerializer
+                    .deserializeSettingsMapFromCurrentLocation((SettingsMap) defaultSettings);
+        }
+        return defaultSettings;
+    }
+
+    @Override
+    public void storeGlobalSettings(JSONObject patchedGlobal) {
+        
+    }
+
+    @Override
+    public void storeContextSpecificSettings(JSONObject contextSpecificSettings) {
+        
+    }
+
+    @Override
+    public Throwable getLastError() {
+        return null;
+    }
+
+    @Override
+    public JSONValue settingsToJSON(Settings newSettings) {
+        return null;
+    }
+
+    @Override
+    public String retrieveContextSpecificSettingsJsonFromLocalStorage() {
+        return null;
+    }
+
+    @Override
+    public void retrieveGlobalSettingsJson(AsyncCallback<JSONObject> asyncCallback) {
+        
+    }
+
+    @Override
+    public void retrieveContextSpecificSettingsJson(AsyncCallback<JSONObject> asyncCallback) {
+        
+    }
+}