diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/com/vaadin/event/ListenerMethod.java | 46 |
1 files changed, 34 insertions, 12 deletions
diff --git a/src/com/vaadin/event/ListenerMethod.java b/src/com/vaadin/event/ListenerMethod.java index 161aff0fb6..2c5e89921f 100644 --- a/src/com/vaadin/event/ListenerMethod.java +++ b/src/com/vaadin/event/ListenerMethod.java @@ -172,19 +172,26 @@ public class ListenerMethod implements EventListener, Serializable { // Checks that the object is of correct type if (!method.getDeclaringClass().isAssignableFrom(target.getClass())) { - throw new java.lang.IllegalArgumentException(); + throw new java.lang.IllegalArgumentException("The method " + + method.getName() + + " cannot be used for the given target: " + + target.getClass().getName()); } // Checks that the event argument is null if (eventArgumentIndex >= 0 && arguments[eventArgumentIndex] != null) { - throw new java.lang.IllegalArgumentException(); + throw new java.lang.IllegalArgumentException("argument[" + + eventArgumentIndex + "] must be null"); } // Checks the event type is supported by the method if (eventArgumentIndex >= 0 && !method.getParameterTypes()[eventArgumentIndex] .isAssignableFrom(eventType)) { - throw new java.lang.IllegalArgumentException(); + throw new java.lang.IllegalArgumentException("The method " + + method.getName() + + " does not accept the given eventType: " + + eventType.getName()); } this.eventType = eventType; @@ -238,19 +245,24 @@ public class ListenerMethod implements EventListener, Serializable { } } if (method == null) { - throw new IllegalArgumentException(); + throw new IllegalArgumentException("Method " + methodName + + " not found in class " + target.getClass().getName()); } // Checks that the event argument is null if (eventArgumentIndex >= 0 && arguments[eventArgumentIndex] != null) { - throw new java.lang.IllegalArgumentException(); + throw new java.lang.IllegalArgumentException("argument[" + + eventArgumentIndex + "] must be null"); } // Checks the event type is supported by the method if (eventArgumentIndex >= 0 && !method.getParameterTypes()[eventArgumentIndex] .isAssignableFrom(eventType)) { - throw new java.lang.IllegalArgumentException(); + throw new java.lang.IllegalArgumentException("The method " + + method.getName() + + " does not accept the given eventType: " + + eventType.getName()); } this.eventType = eventType; @@ -291,7 +303,10 @@ public class ListenerMethod implements EventListener, Serializable { // Check that the object is of correct type if (!method.getDeclaringClass().isAssignableFrom(target.getClass())) { - throw new java.lang.IllegalArgumentException(); + throw new java.lang.IllegalArgumentException("The method " + + method.getName() + + " cannot be used for the given target: " + + target.getClass().getName()); } this.eventType = eventType; @@ -342,7 +357,8 @@ public class ListenerMethod implements EventListener, Serializable { } } if (method == null) { - throw new IllegalArgumentException(); + throw new IllegalArgumentException("Method " + methodName + + " not found in class " + target.getClass().getName()); } this.eventType = eventType; @@ -380,7 +396,10 @@ public class ListenerMethod implements EventListener, Serializable { // Checks that the object is of correct type if (!method.getDeclaringClass().isAssignableFrom(target.getClass())) { - throw new java.lang.IllegalArgumentException(); + throw new java.lang.IllegalArgumentException("The method " + + method.getName() + + " cannot be used for the given target: " + + target.getClass().getName()); } this.eventType = eventType; @@ -396,7 +415,8 @@ public class ListenerMethod implements EventListener, Serializable { arguments = new Object[] { null }; eventArgumentIndex = 0; } else { - throw new IllegalArgumentException(); + throw new IllegalArgumentException( + "Method requires unknown parameters"); } } @@ -438,7 +458,8 @@ public class ListenerMethod implements EventListener, Serializable { } } if (method == null) { - throw new IllegalArgumentException(); + throw new IllegalArgumentException("Method " + methodName + + " not found in class " + target.getClass().getName()); } this.eventType = eventType; @@ -454,7 +475,8 @@ public class ListenerMethod implements EventListener, Serializable { arguments = new Object[] { null }; eventArgumentIndex = 0; } else { - throw new IllegalArgumentException(); + throw new IllegalArgumentException( + "Method requires unknown parameters"); } } |