public AssetSourceImpl(
ThreadLocale threadLocale,
Map<String, AssetFactory> configuration,
SymbolSource symbolSource,
Logger logger,
OperationTracker tracker,
Request request) {
this.configuration = configuration;
this.threadLocale = threadLocale;
this.symbolSource = symbolSource;
this.logger = logger;
this.tracker = tracker;
this.request = request;
Map<Class, AssetFactory> byResourceClass = CollectionFactory.newMap();
for (Map.Entry<String, AssetFactory> e : configuration.entrySet()) {
String prefix = e.getKey();
AssetFactory factory = e.getValue();
Resource rootResource = factory.getRootResource();
byResourceClass.put(rootResource.getClass(), factory);
prefixToRootResource.put(prefix, rootResource);
}
registry = StrategyRegistry.newInstance(AssetFactory.class, byResourceClass);
}
private Asset getLocalizedAssetFromResource(Resource unlocalized, Locale locale) {
Resource localized = locale == null ? unlocalized : unlocalized.forLocale(locale);
if (localized == null || !localized.exists())
throw new RuntimeException(
String.format("Unable to locate asset '%s' (the file does not exist).", unlocalized));
return getAssetForResource(localized);
}
/**
* Finds a localized resource.
*
* @param baseResource base resource, or null for classpath root
* @param path path from baseResource to expected resource
* @param locale locale to localize for, or null to not localize
* @return resource, which may not exist
*/
private Resource findLocalizedResource(Resource baseResource, String path, Locale locale) {
Resource unlocalized = findResource(baseResource, path);
if (locale == null || !unlocalized.exists()) {
return unlocalized;
}
return localize(unlocalized, locale);
}
private Asset createAssetFromResource(Resource resource) {
// The class of the resource is derived from the class of the base resource.
// So we can then use the class of the resource as a key to locate the correct asset
// factory.
try {
upgradeReadLockToWriteLock();
// Check for competing thread beat us to it (not very likely!):
Asset result = TapestryInternalUtils.getAndDeref(cache, resource);
if (result != null) {
return result;
}
Class resourceClass = resource.getClass();
AssetFactory factory = registry.get(resourceClass);
return factory.createAsset(resource);
} finally {
downgradeWriteLockToReadLock();
}
}
/**
* @param baseResource the base resource (or null for classpath root) that path will extend from
* @param path extension path from the base resource
* @return the resource, unlocalized, which may not exist (may be for a path with no actual
* resource)
*/
private Resource findResource(Resource baseResource, String path) {
assert path != null;
int colonx = path.indexOf(':');
if (colonx < 0) {
Resource root =
baseResource != null ? baseResource : prefixToRootResource.get(AssetConstants.CLASSPATH);
return root.forFile(path);
}
String prefix = path.substring(0, colonx);
Resource root = prefixToRootResource.get(prefix);
if (root == null)
throw new IllegalArgumentException(
String.format("Unknown prefix for asset path '%s'.", path));
return root.forFile(path.substring(colonx + 1));
}
/**
* converts an image resource to an AWT image.
*
* @param imageResource image resource
* @return AWT image
*/
private Image toAwtImage(Resource imageResource) {
Image image = Toolkit.getDefaultToolkit().getImage(imageResource.toURL());
MediaTracker mediaTracker = new MediaTracker(new Container());
mediaTracker.addImage(image, 0);
try {
mediaTracker.waitForID(0);
} catch (InterruptedException e) {
throw new RuntimeException(e);
}
return image;
}
private Asset getComponentAsset(
ComponentResources resources, String expandedPath, Resource metaResource) {
if (expandedPath.contains(":") || expandedPath.startsWith("/")) {
return getAssetInLocale(resources.getBaseResource(), expandedPath, resources.getLocale());
}
// So, it's relative to the component. First, check if there's a match using the 5.4 rules.
if (metaResource.exists()) {
return getAssetForResource(metaResource);
}
Resource oldStyle =
findLocalizedResource(resources.getBaseResource(), expandedPath, resources.getLocale());
if (oldStyle == null || !oldStyle.exists()) {
return null;
}
return getAssetForResource(oldStyle);
}
private String buildClientURL(Resource resource) {
boolean requiresDigest = cache.requiresDigest(resource);
String path = resource.getPath();
if (requiresDigest) {
// Resources with extensions go from foo/bar/baz.txt --> foo/bar/baz.CHECKSUM.txt
int lastdotx = path.lastIndexOf('.');
path = path.substring(0, lastdotx + 1) + cache.getDigest(resource) + path.substring(lastdotx);
}
return path;
}
private Asset getLocaleAsset(Locale locale, String jQueryUIPath) {
final String prefix =
String.format("%s/i18n/jquery.ui.datepicker-%s", jQueryUIPath, locale.getLanguage());
final Resource withCountryExtension =
typeCoercer.coerce(String.format("%s-%s.js", prefix, locale.getCountry()), Resource.class);
if (withCountryExtension.exists()) {
return assetSource.getClasspathAsset(withCountryExtension.getPath());
}
final Resource withLanguageExtension =
typeCoercer.coerce(String.format("%s.js", prefix), Resource.class);
if (withLanguageExtension.exists()) {
return assetSource.getClasspathAsset(withLanguageExtension.getPath());
}
return null;
}
private Resource localize(Resource unlocalized, Locale locale) {
Resource localized = unlocalized.forLocale(locale);
return localized != null ? localized : unlocalized;
}