Examples of org.apache.tapestry5.runtime.ComponentEvent

org.apache.tapestry5.runtime.ComponentEvent
An event that may originate in application logic, or as a result of a client interaction (a GET or POST from the client). @see ComponentResourcesCommon#triggerEvent(String,Object[],org.apache.tapestry5.ComponentEventCallback) @see org.apache.tapestry5.ComponentEventCallback

        train_getCount(context, 2);
        train_get(context, Integer.class, 0, value);


        replay();


        ComponentEvent event = new ComponentEventImpl("eventType", "someId", context, handler, resources, logger);


        assertSame(event.coerceContext(0, "java.lang.Integer"), value);


        verify();
    }

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        train_getCount(context, 0);


        replay();


        ComponentEvent event = new ComponentEventImpl("eventType", "someId", context, handler, null, logger);


        event.setMethodDescription("foo.Bar.baz()");


        try
        {
            event.coerceContext(1, "java.lang.Integer");
        }
        catch (IllegalArgumentException ex)
        {
            assertEquals(ex.getMessage(),
                         "Method foo.Bar.baz() has more parameters than there are context values for this component event.");

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        expect(context.get(Integer.class, 0)).andThrow(new NumberFormatException("Not so easy, is it?"));


        replay();


        ComponentEvent event = new ComponentEventImpl("eventType", "someId", context, handler, resources, logger);


        event.setMethodDescription("foo.Bar.baz()");


        try
        {
            event.coerceContext(0, "java.lang.Integer");
            unreachable();
        }
        catch (IllegalArgumentException ex)
        {
            // Different JVMs will report the conversion error slightly differently,

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        train_handleResult(handler, result, true);


        replay();


        ComponentEvent event = new ComponentEventImpl("eventType", "someId", null, handler, null, logger);


        event.setMethodDescription(methodDescription);


        assertFalse(event.isAborted());


        assertTrue(event.storeResult(result));


        assertTrue(event.isAborted());


        verify();
    }

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        train_handleResult(handler, result, false);


        replay();


        ComponentEvent event = new ComponentEventImpl("eventType", "someId", null, handler, null, logger);


        event.setMethodDescription(methodDescription);


        assertFalse(event.storeResult(result));


        assertFalse(event.isAborted());


        verify();
    }

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        train_isDebugEnabled(logger, true);
        logger.debug(eq(TapestryMarkers.EVENT_HANDLER_METHOD), isA(String.class));


        replay();


        ComponentEvent event = new ComponentEventImpl("eventType", "someId", null, handler, null, logger);


        event.setMethodDescription("foo.Bar.baz()");


        assertFalse(event.storeResult(null));


        assertFalse(event.isAborted());


        verify();
    }

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        expect(handler.handleResult(result)).andReturn(true);


        replay();


        ComponentEvent event = new ComponentEventImpl("eventType", "someId", null, handler, null, logger);


        event.setMethodDescription("foo.Bar.baz()");
        event.storeResult(result);


        try
        {
            event.setMethodDescription("foo.Bar.biff()");
            event.storeResult(null);
            unreachable();
        }
        catch (IllegalStateException ex)
        {
            assertEquals(ex.getMessage(), ServicesMessages

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            {
                // Invoke the super-class implementation first.


                invocation.proceed();


                ComponentEvent event = (ComponentEvent) invocation.getParameter(0);


                if (!event.isAborted() && event.matches(eventType, "", minContextValues))
                {
                    event.setMethodDescription(methodDescription);


                    handler.handleEvent((Component) invocation.getInstance(), event);


                    // Ensure that the caller knows that some event handler method
                    // was invoked.

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        {
            try
            {
                Logger logger = component.getEventLogger();


                ComponentEvent event = new ComponentEventImpl(currentEventType, componentId, currentContext, wrapped,
                        elementResources, logger);


                logger.debug(TapestryMarkers.EVENT_DISPATCH, "Dispatch event: {}", event);


                result |= component.dispatchEvent(event);


                if (event.isAborted())
                    return result;
            }
            catch (RuntimeException ex)
            {
                // An exception in an event handler method

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                // Invoke the super-class implementation first. If no super-class,
                // this will do nothing and return false.


                invocation.proceed();


                ComponentEvent event = (ComponentEvent) invocation.getParameter(0);


                if (invokeEventHandlers(event, invocation.getInstance()))
                    invocation.setReturnValue(true);
            }


            private boolean invokeEventHandlers(ComponentEvent event, Object instance)
            {
                // If the super-class aborted the event (some super-class method return non-null),
                // then it's all over, don't even check for handlers in this class.


                if (event.isAborted())
                    return false;


                boolean didInvokeSomeHandler = false;


                for (EventHandlerMethodInvoker invoker : invokersArray)
                {
                    if (event.matches(invoker.getEventType(), invoker.getComponentId(),
                            invoker.getMinContextValueCount()))
                    {
                        didInvokeSomeHandler = true;


                        invoker.invokeEventHandlerMethod(event, instance);


                        if (event.isAborted())
                            break;
                    }
                }


                return didInvokeSomeHandler;

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