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-rw-r--r--bkucommon/src/main/java/at/gv/egiz/bku/viewer/ResourceFontLoader.java61
-rw-r--r--bkucommon/src/main/java/at/gv/egiz/bku/viewer/ValidatorFactory.java23
2 files changed, 79 insertions, 5 deletions
diff --git a/bkucommon/src/main/java/at/gv/egiz/bku/viewer/ResourceFontLoader.java b/bkucommon/src/main/java/at/gv/egiz/bku/viewer/ResourceFontLoader.java
new file mode 100644
index 00000000..8cab581d
--- /dev/null
+++ b/bkucommon/src/main/java/at/gv/egiz/bku/viewer/ResourceFontLoader.java
@@ -0,0 +1,61 @@
+/*
+ * Copyright 2008 Federal Chancellery Austria and
+ * Graz University of Technology
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package at.gv.egiz.bku.viewer;
+
+import at.gv.egiz.bku.gui.viewer.FontProviderException;
+import at.gv.egiz.bku.gui.viewer.FontProvider;
+import java.awt.Font;
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+
+/**
+ * Loads font(s) as classpath resource.
+ * Loaded fonts are shared within all instances in this VM (classloader)
+ * @author Clemens Orthacker <clemens.orthacker@iaik.tugraz.at>
+ */
+public class ResourceFontLoader implements FontProvider {
+
+ public static final String FONT_RESOURCE = "DejaVuLGCSansMono.ttf";
+
+ protected final static Log log = LogFactory.getLog(ResourceFontLoader.class);
+
+ /** TextValidator and (local) SecureViewerDialog (see LocalStalFactory) use ResourceFontLoader, load resource only once */
+ protected static Font font;
+
+ /**
+ *
+ * @return
+ * @throws FontProviderException encapsulating FontFormatException (if resource doesn't contain the plain format)
+ * or IOException (if resource cannot be retrieved)
+ */
+ @Override
+ public Font getFont() throws FontProviderException {
+ if (font == null) {
+ try {
+ if (log.isDebugEnabled()) {
+ log.debug("loading " + getClass().getClassLoader().getResource(FONT_RESOURCE));
+ }
+ font = Font.createFont(Font.PLAIN, getClass().getClassLoader().getResourceAsStream(FONT_RESOURCE));
+ } catch (Exception ex) {
+ log.error("failed to load font", ex);
+ throw new FontProviderException("failed to load font", ex);
+ }
+ }
+ log.trace("font resource loaded");
+ return font;
+ }
+}
diff --git a/bkucommon/src/main/java/at/gv/egiz/bku/viewer/ValidatorFactory.java b/bkucommon/src/main/java/at/gv/egiz/bku/viewer/ValidatorFactory.java
index e16a261e..ad9bf6bb 100644
--- a/bkucommon/src/main/java/at/gv/egiz/bku/viewer/ValidatorFactory.java
+++ b/bkucommon/src/main/java/at/gv/egiz/bku/viewer/ValidatorFactory.java
@@ -17,6 +17,8 @@
package at.gv.egiz.bku.viewer;
import java.io.IOException;
+import java.lang.reflect.Constructor;
+import java.lang.reflect.InvocationTargetException;
import java.net.URL;
import java.util.Collections;
import java.util.Enumeration;
@@ -108,14 +110,25 @@ public class ValidatorFactory {
return null;
}
-
+
+ /**
+ *
+ * @throws InvocationTargetException if className's (nullary) constructor throws exception
+ */
private Validator createValidatorInstance(String className)
throws ClassNotFoundException, InstantiationException,
- IllegalAccessException {
-
+ IllegalAccessException, NoSuchMethodException, InvocationTargetException {
+
try {
- Class<?> implClass = classLoader.loadClass(className);
- return (Validator) implClass.newInstance();
+ Constructor<?> implConstructor = classLoader.loadClass(className).getConstructor((Class[])null);
+ return (Validator) implConstructor.newInstance((Object[])null);
+ } catch (InvocationTargetException ex) {
+ //ex from constructor
+ log.error("Failed to initialize validator class '" + className + "': " + ex.getCause().getMessage(), ex.getCause());
+ throw ex;
+ } catch (NoSuchMethodException ex) {
+ log.error("Validator class '" + className + "' has no nullary constructor", ex);
+ throw ex;
} catch (ClassNotFoundException e) {
log.error("Validator class '" + className + "' not found.", e);
throw e;