diff options
Diffstat (limited to 'src/main/java/com/c2kernel/utils/Resource.java')
| -rw-r--r-- | src/main/java/com/c2kernel/utils/Resource.java | 166 |
1 files changed, 166 insertions, 0 deletions
diff --git a/src/main/java/com/c2kernel/utils/Resource.java b/src/main/java/com/c2kernel/utils/Resource.java new file mode 100644 index 0000000..10228da --- /dev/null +++ b/src/main/java/com/c2kernel/utils/Resource.java @@ -0,0 +1,166 @@ +package com.c2kernel.utils;
+
+//Java
+import java.net.MalformedURLException;
+import java.net.URL;
+import java.util.HashMap;
+import java.util.Hashtable;
+
+import javax.swing.ImageIcon;
+
+import com.c2kernel.common.ObjectNotFoundException;
+
+/**************************************************************************
+ *
+ * @author $Author: abranson $ $Date: 2005/10/05 07:39:36 $
+ * @version $Revision: 1.71 $
+ **************************************************************************/
+public class Resource {
+ static private Hashtable<String, String> txtCache = new Hashtable<String, String>();
+ static private Hashtable<String, ImageIcon> imgCache = new Hashtable<String, ImageIcon>();
+ static private URL baseURL = getURLorResURL("com/c2kernel/utils/resources/");
+ static private HashMap<String, URL> moduleBaseURLs = new HashMap<String, URL>();
+ static public final ImageIcon nullImg = new ImageIcon(new byte[] { 0 });
+
+ public static URL getKernelBaseURL() {
+ return baseURL;
+ }
+
+ public static URL getKernelResourceURL(String resName) throws MalformedURLException {
+ return new URL(baseURL, resName);
+ }
+
+ public static void addModuleBaseURL(String ns, URL newBaseURL) {
+ moduleBaseURLs.put(ns, newBaseURL);
+ Logger.msg("Adding resource URL for "+ns+": "+newBaseURL.toString());
+ }
+
+ public static void addModuleBaseURL(String ns, String newBaseURL) {
+ addModuleBaseURL(ns, getURLorResURL(newBaseURL));
+ }
+
+ public static URL getModuleBaseURL(String ns) {
+ return moduleBaseURLs.get(ns);
+ }
+
+ public static HashMap<String, URL> getModuleBaseURLs() {
+ return moduleBaseURLs;
+ }
+
+ static public URL getModuleResourceURL(String ns, String resName) throws MalformedURLException {
+ return new URL(moduleBaseURLs.get(ns), resName);
+ }
+
+ private static URL getURLorResURL(String newURL) {
+ URL result;
+ try {
+ result = new URL(newURL);
+ } catch (java.net.MalformedURLException ex) {
+ //it is assumed that a 'wrong' URL denotes a directory
+ //of files resolvable from the CLASSPATH
+ result = Resource.class.getClassLoader().getResource(newURL);
+ }
+ return result;
+ }
+ /**************************************************************************
+ * Gets any text resource files
+ **************************************************************************/
+
+ static public String findTextResource(String resName) {
+ try {
+ for (String ns : getModuleBaseURLs().keySet()) {
+ try {
+ return getTextResource(ns, resName);
+ } catch (ObjectNotFoundException ex) { }
+ }
+ return getTextResource(null, resName);
+ } catch (ObjectNotFoundException ex) {
+ Logger.warning("Text resource '"+resName+"' not found.");
+ return null;
+ }
+ }
+
+ static public String getTextResource(String ns, String resName) throws ObjectNotFoundException
+ // throws IOException
+ {
+ Logger.msg(8, "Resource::getTextResource() - Getting resource: " + resName);
+
+ if (txtCache.containsKey(ns+'/'+resName)) {
+ return txtCache.get(ns+'/'+resName);
+ }
+
+ try {
+
+ String newRes = null;
+ URL loc;
+
+ if (ns == null) // kernel
+ loc = getKernelResourceURL(resName);
+ else
+ loc = getModuleResourceURL(ns, resName);
+ newRes = FileStringUtility.url2String(loc);
+ txtCache.put(ns+'/'+resName, newRes);
+ return newRes;
+ } catch (Exception e) {
+ throw new ObjectNotFoundException(e.getMessage(),null);
+ }
+ }
+ /**
+ * Gets an image from the resource directories
+ *
+ * @param resName - filename after resources/images
+ * @return
+ */
+ static public ImageIcon findImage(String resName) {
+ try {
+ for (String ns : getModuleBaseURLs().keySet()) {
+ try {
+ return getImage(ns, resName);
+ } catch (ObjectNotFoundException ex) { }
+ }
+ return getImage(null, resName);
+ } catch (ObjectNotFoundException ex) {
+ Logger.warning("Image '"+resName+"' not found. Using null icon");
+ return nullImg;
+ }
+ }
+
+ static public ImageIcon getImage(String ns, String resName) throws ObjectNotFoundException {
+ if (resName == null)
+ return nullImg;
+
+ if (imgCache.containsKey(ns+'/'+resName)) {
+ return imgCache.get(ns+'/'+resName);
+ }
+
+ URL imgLocation = null;
+ if (ns == null)
+ try {
+ imgLocation = getKernelResourceURL("images/"+resName);
+ } catch (MalformedURLException ex) { }
+ else
+ try {
+ imgLocation = getModuleResourceURL(ns, "images/"+resName);
+ } catch (MalformedURLException ex) { }
+
+ if (imgLocation!= null) {
+ ImageIcon newImg = new ImageIcon(imgLocation);
+
+ if (newImg.getIconHeight() > -1) {
+ imgCache.put(ns+'/'+resName, newImg);
+ Logger.msg(0, "Loaded "+resName+" "+newImg.getIconWidth()+"x"+newImg.getIconHeight());
+ return newImg;
+ }
+ }
+ throw new ObjectNotFoundException();
+ }
+
+ static public String getKernelVersion() {
+ try {
+ return FileStringUtility.url2String(getKernelResourceURL("textFiles/version.txt"));
+ } catch (Exception ex) {
+ return "No version info found";
+ }
+
+ }
+}
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