OO-1889: remove the assert exception

src/main/java/org/olat/core/gui/components/panel/ListPanel.java

@@ -27,7 +27,8 @@ import org.olat.core.gui.components.AbstractComponent;
 import org.olat.core.gui.components.Component;
 import org.olat.core.gui.components.ComponentCollection;
 import org.olat.core.gui.components.ComponentRenderer;
-import org.olat.core.logging.AssertException;
+import org.olat.core.logging.OLog;
+import org.olat.core.logging.Tracing;
 
 /**
  * 
@@ -37,6 +38,8 @@ import org.olat.core.logging.AssertException;
  */
 public class ListPanel extends AbstractComponent implements ComponentCollection {
 	
+	private static final OLog log = Tracing.createLoggerFor(ListPanel.class);
+	
 	private static final ComponentRenderer RENDERER = new ListPanelRenderer();
 	private final List<Component> content = new ArrayList<>(3);
 	
@@ -63,7 +66,7 @@ public class ListPanel extends AbstractComponent implements ComponentCollection
 	 */
 	@Override
 	protected void doDispatchRequest(UserRequest ureq) {
-		throw new AssertException("a panel should never dispatch a request (unless it has droppables, which it has not), ureq = "+ureq);
+		log.error("a panel should never dispatch a request (unless it has droppables, which it has not), ureq = "+ureq);
 	}
 
 	public String getCssClass() {

src/main/java/org/olat/core/gui/components/panel/OncePanel.java

@@ -33,7 +33,8 @@ import org.olat.core.gui.components.Component;
 import org.olat.core.gui.components.ComponentCollection;
 import org.olat.core.gui.components.ComponentRenderer;
 import org.olat.core.gui.render.ValidationResult;
-import org.olat.core.logging.AssertException;
+import org.olat.core.logging.OLog;
+import org.olat.core.logging.Tracing;
 
 /**
  * Description:<br>
@@ -45,6 +46,7 @@ import org.olat.core.logging.AssertException;
  * @author Felix Jost, http://www.goodsolutions.ch
  */
 public class OncePanel extends AbstractComponent implements ComponentCollection {
+	private static final OLog log = Tracing.createLoggerFor(OncePanel.class);
 	private static final ComponentRenderer RENDERER = new PanelRenderer();
 
 	private boolean hideOnNextValidate;
@@ -92,7 +94,7 @@ public class OncePanel extends AbstractComponent implements ComponentCollection
 	
 	@Override
 	protected void doDispatchRequest(UserRequest ureq) {
-		throw new AssertException("a panel should never dispatch a request (unless it has droppables, which it has not), ureq = "+ureq);
+		log.error("a panel should never dispatch a request (unless it has droppables, which it has not), ureq = "+ureq);
 	}
 
 	@Override

src/main/java/org/olat/core/gui/components/panel/SimpleStackedPanel.java

@@ -35,6 +35,8 @@ import org.olat.core.gui.components.AbstractComponent;
 import org.olat.core.gui.components.Component;
 import org.olat.core.gui.components.ComponentRenderer;
 import org.olat.core.logging.AssertException;
+import org.olat.core.logging.OLog;
+import org.olat.core.logging.Tracing;
 
 /**
  * Description: <br>
@@ -44,6 +46,7 @@ import org.olat.core.logging.AssertException;
  * @author Felix Jost
  */
 public class SimpleStackedPanel extends AbstractComponent implements StackedPanel {
+	private static final OLog log = Tracing.createLoggerFor(SimpleStackedPanel.class);
 	private static final ComponentRenderer RENDERER = new PanelRenderer();
 
 	private Component curContent;
@@ -62,8 +65,9 @@ public class SimpleStackedPanel extends AbstractComponent implements StackedPane
 	 * delegate
 	 * @param ureq
 	 */
+	@Override
 	protected void doDispatchRequest(UserRequest ureq) {
-		throw new AssertException("a panel should never dispatch a request (unless it has droppables, which it has not), ureq = "+ureq);
+		log.error("a panel should never dispatch a request (unless it has droppables, which it has not), ureq = "+ureq);
 	}
 
 	/**