public class Bundle<E extends Enum<E>> {
protected Class<E> type;
protected Enum<?> name;
- private ResourceBundle map;
- private Map<String, String> changeMap;
+ private Map<String, String> map; // R/O map
+ private Map<String, String> changeMap; // R/W map
/**
* Create a new {@link Bundles} of the given name.
protected Bundle(Class<E> type, Enum<?> name) {
this.type = type;
this.name = name;
+ this.map = new HashMap<String, String>();
this.changeMap = new HashMap<String, String>();
- setBundle(name, Locale.getDefault());
+ setBundle(name, Locale.getDefault(), false);
}
/**
* resource file)
*/
public String getString(E id) {
- return getStringX(id, null);
+ return getString(id.name());
}
/**
*
*/
public void setString(E id, String value) {
- setStringX(id, null, value);
+ setString(id.name(), value);
}
/**
* Return the value associated to the given id as a {@link String} suffixed
* with the runtime value "_suffix" (that is, "_" and suffix).
+ * <p>
+ * Will only accept suffixes that form an existing id.
*
* @param mame
* the id of the value to get
String key = id.name()
+ (suffix == null ? "" : "_" + suffix.toUpperCase());
- if (containsKey(key)) {
- return getString(key).trim();
+ try {
+ id = Enum.valueOf(type, key);
+ return getString(id);
+ } catch (IllegalArgumentException e) {
+
}
return null;
/**
* Set the value associated to the given id as a {@link String} suffixed
* with the runtime value "_suffix" (that is, "_" and suffix).
+ * <p>
+ * Will only accept suffixes that form an existing id.
*
* @param mame
* the id of the value to get
String key = id.name()
+ (suffix == null ? "" : "_" + suffix.toUpperCase());
- setString(key, value);
+ try {
+ id = Enum.valueOf(type, key);
+ setString(id, value);
+ } catch (IllegalArgumentException e) {
+
+ }
}
/**
setString(id, "#" + r + g + b + a);
}
+ /**
+ * Create/update the .properties file.
+ * <p>
+ * Will use the most likely candidate as base if the file does not already
+ * exists and this resource is translatable (for instance, "en_US" will use
+ * "en" as a base if the resource is a translation file).
+ * <p>
+ * Will update the files in {@link Bundles#getDirectory()}; it <b>MUST</b>
+ * be set.
+ *
+ * @throws IOException
+ * in case of IO errors
+ */
+ public void updateFile() throws IOException {
+ updateFile(Bundles.getDirectory());
+ }
+
/**
* Create/update the .properties file.
* <p>
* "en" as a base if the resource is a translation file).
*
* @param path
- * the path where the .properties files are
+ * the path where the .properties files are, <b>MUST NOT</b> be
+ * NULL
*
* @throws IOException
* in case of IO errors
/**
* Reload the {@link Bundle} data files.
+ *
+ * @param resetToDefault
+ * reset to the default configuration (do not look into the
+ * possible user configuration files, only take the original
+ * configuration)
*/
- public void reload() {
- setBundle(name, null);
+ public void reload(boolean resetToDefault) {
+ setBundle(name, Locale.getDefault(), resetToDefault);
}
/**
* @return true if it does
*/
protected boolean containsKey(String key) {
- if (changeMap.containsKey(key)) {
- return true;
- }
-
- try {
- map.getObject(key);
- return true;
- } catch (MissingResourceException e) {
- return false;
- }
+ return changeMap.containsKey(key) || map.containsKey(key);
}
/**
return changeMap.get(key);
}
- if (containsKey(key)) {
- return map.getString(key);
+ if (map.containsKey(key)) {
+ return map.get(key);
}
return null;
* the associated value
*/
protected void setString(String key, String value) {
- changeMap.put(key, value);
+ changeMap.put(key, value == null ? null : value.trim());
}
/**
* the name of the bundle to load
* @param locale
* the {@link Locale} to use
+ * @param resetToDefault
+ * reset to the default configuration (do not look into the
+ * possible user configuration files, only take the original
+ * configuration)
*/
- protected void setBundle(Enum<?> name, Locale locale) {
- map = null;
+ protected void setBundle(Enum<?> name, Locale locale, boolean resetToDefault) {
changeMap.clear();
String dir = Bundles.getDirectory();
- if (dir != null) {
+ boolean found = false;
+ if (!resetToDefault && dir != null) {
try {
File file = getPropertyFile(dir, name.name(), locale);
if (file != null) {
Reader reader = new InputStreamReader(new FileInputStream(
file), "UTF8");
- map = new PropertyResourceBundle(reader);
+ resetMap(new PropertyResourceBundle(reader));
+ found = true;
}
} catch (IOException e) {
e.printStackTrace();
}
}
- if (map == null) {
- map = ResourceBundle.getBundle(type.getPackage().getName() + "."
- + name.name(), locale, new FixedResourceBundleControl());
+ if (!found) {
+ String bname = type.getPackage().getName() + "." + name.name();
+ try {
+ resetMap(ResourceBundle
+ .getBundle(bname, locale, type.getClassLoader(),
+ new FixedResourceBundleControl()));
+ } catch (Exception e) {
+ // We have no bundle for this Bundle
+ System.err.println("No bundle found for: " + bname);
+ resetMap(null);
+ }
+ }
+ }
+
+ /**
+ * Reset the backing map to the content of the given bundle, or empty if
+ * bundle is NULL.
+ *
+ * @param bundle
+ * the bundle to copy
+ */
+ private void resetMap(ResourceBundle bundle) {
+ this.map.clear();
+
+ if (bundle != null) {
+ for (E field : type.getEnumConstants()) {
+ try {
+ String value = bundle.getString(field.name());
+ this.map.put(field.name(),
+ value == null ? null : value.trim());
+ } catch (MissingResourceException e) {
+ }
+ }
+ }
+ }
+
+ /**
+ * Take a snapshot of the changes in memory in this {@link Bundle} made by
+ * the "set" methods ( {@link Bundle#setString(Enum, String)}...) at the
+ * current time.
+ *
+ * @return a snapshot to use with {@link Bundle#restoreSnapshot(Object)}
+ */
+ public Object takeSnapshot() {
+ return new HashMap<String, String>(changeMap);
+ }
+
+ /**
+ * Restore a snapshot taken with {@link Bundle}, or reset the current
+ * changes if the snapshot is NULL.
+ *
+ * @param snap
+ * the snapshot or NULL
+ */
+ @SuppressWarnings("unchecked")
+ public void restoreSnapshot(Object snap) {
+ if (snap == null) {
+ changeMap.clear();
+ } else {
+ if (snap instanceof Map) {
+ changeMap = (Map<String, String>) snap;
+ } else {
+ throw new Error(
+ "Restoring changes in a Bundle must be done on a changes snapshot, "
+ + "or NULL to discard current changes");
+ }
}
}
git://git.nikiroo.be / nikiroo-utils.git / blobdiff