Examples of org.apache.tapestry5.runtime.Component

org.apache.tapestry5.runtime.Component
Interface that defines the lifecycle of a component, within a page, allowing for callbacks into the component for many different events. This interface is part of the public API for Tapestry, but is not expected to be directly implemented by component classes; it should only be implemented as part of the component class transformation process.
Most of the methods are related to render phases; see the corresponding annotations and component rendering documentation to see how they relate to each other.
Starting in 5.3 this interface no longer implements {@link PageLifecycleListener}. Normally, this would be an incompatible change, but Component is not supposed to be directly implemented by user code.

    @Test
    public void cached_object_write() throws Exception
    {
        InternalComponentResources resources = mockInternalComponentResources();


        Component component = setupForIntegrationTest(resources);


        train_isLoaded(resources, true);
        train_isBound(resources, "object", true);
        resources.writeParameter("object", "first");
        train_isRendering(resources, false);


        train_isLoaded(resources, true);
        train_isBound(resources, "object", true);
        train_readParameter(resources, "object", String.class, "second");
        train_isRendering(resources, false);


        replay();


        access.set(component, "object", "first");
        assertEquals(access.get(component, "object"), "second");


        verify();


        // Now try during rendering ...


        train_isLoaded(resources, true);
        train_isBound(resources, "object", true);
        resources.writeParameter("object", "third");
        train_isRendering(resources, true);


        replay();


        access.set(component, "object", "third");
        assertEquals(access.get(component, "object"), "third");


        verify();


        // And the cached value is lost after rendering is complete.


        train_isLoaded(resources, true);
        train_isBound(resources, "object", true);
        train_readParameter(resources, "object", String.class, "fourth");
        train_isRendering(resources, false);


        replay();


        component.postRenderCleanup();


        assertEquals(access.get(component, "object"), "fourth");


        verify();
    }

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    @Test
    public void cached_primitive_write() throws Exception
    {
        InternalComponentResources resources = mockInternalComponentResources();


        Component component = setupForIntegrationTest(resources);


        train_isLoaded(resources, true);
        train_isBound(resources, "primitive", true);
        resources.writeParameter("primitive", 321);


        train_isRendering(resources, false);


        train_isLoaded(resources, true);
        train_isBound(resources, "primitive", true);
        train_readParameter(resources, "primitive", Integer.class, 123);
        train_isRendering(resources, false);


        replay();


        access.set(component, "primitive", 321);
        assertEquals(access.get(component, "primitive"), 123);


        verify();


        // Now try during rendering ...


        train_isLoaded(resources, true);
        train_isBound(resources, "primitive", true);
        resources.writeParameter("primitive", 567);
        train_isRendering(resources, true);


        replay();


        access.set(component, "primitive", 567);
        assertEquals(access.get(component, "primitive"), 567);


        verify();


        // And the cached value is lost after rendering is complete.


        train_isLoaded(resources, true);
        train_isBound(resources, "primitive", true);
        train_readParameter(resources, "primitive", Integer.class, 890);
        train_isRendering(resources, false);


        replay();


        component.postRenderCleanup();


        assertEquals(access.get(component, "primitive"), 890);


        verify();
    }

View Full Code Here

    @Test
    public void uncached_object_read() throws Exception
    {
        InternalComponentResources resources = mockInternalComponentResources();


        Component component = setupForIntegrationTest(resources);


        // Notice no check for isRendering() since that is irrelevant to uncached parameters.
        // Also note difference between field name and parameter name, due to Parameter.name() being
        // specified.

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    @Test
    public void uncached_object_write() throws Exception
    {
        InternalComponentResources resources = mockInternalComponentResources();


        Component component = setupForIntegrationTest(resources);


        // Notice no check for isRendering() since that is irrelevant to uncached parameters.
        // Also note difference between field name and parameter name, due to Parameter.name() being
        // specified.

View Full Code Here


                stub_isDebugEnabled(logger, false);
            }
        };


        Component component = setupForIntegrationTest(resources, logger, DefaultParameterComponent.class.getName(),
                                                      model, source, phaseTwoTraining);


        train_isLoaded(resources, true);
        train_isBound(resources, "value", true);
        train_readParameter(resources, "value", String.class, boundValue);

View Full Code Here

                stub_isDebugEnabled(logger, false);
            }
        };




        Component component = setupForIntegrationTest(resources, logger,
                                                      DefaultParameterBindingMethodComponent.class.getName(), model,
                                                      source, phaseTwoTraining);


        train_isLoaded(resources, true);
        train_isBound(resources, "value", true);

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        transformation.finish();


        Instantiator instantiator = transformation.createInstantiator();


        Component component = instantiator.newInstance(resources);


        component.containingPageDidLoad();


        verify();


        return component;
    }

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            if (logger.isDebugEnabled())
                logger.debug(String.format("Processing actions: %s", actionsBase64));


            ObjectInputStream ois = null;


            Component component = null;


            try
            {
                ois = new Base64ObjectInputStream(actionsBase64);


                while (true)
                {
                    String componentId = ois.readUTF();
                    ComponentAction action = (ComponentAction) ois.readObject();


                    component = source.getComponent(componentId);


                    if (logger.isDebugEnabled())
                        logger.debug(String.format("Processing: %s  %s", componentId, action));




                    action.execute(component);


                    component = null;
                }
            }
            catch (EOFException ex)
            {
                // Expected
            }
            catch (Exception ex)
            {
                Location location = component == null ? null : component.getComponentResources().getLocation();


                throw new TapestryException(ex.getMessage(), location, ex);
            }
            finally
            {

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            logger.debug("Processing actions: {}", clientEncodedActions);


            ObjectInputStream ois = null;


            Component component = null;


            try
            {
                ois = clientDataEncoder.decodeClientData(clientEncodedActions);


                while (!eventCallback.isAborted())
                {
                    String componentId = ois.readUTF();
                    ComponentAction action = (ComponentAction) ois.readObject();


                    component = source.getComponent(componentId);


                    logger.debug("Processing: {} {}", componentId, action);


                    action.execute(component);


                    component = null;
                }
            } catch (EOFException ex)
            {
                // Expected
            } catch (Exception ex)
            {
                Location location = component == null ? null : component.getComponentResources().getLocation();


                throw new TapestryException(ex.getMessage(), location, ex);
            } finally
            {
                InternalUtils.close(ois);

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            // See https://issues.apache.org/jira/browse/TAP5-1632
            javascriptSupport.allocateClientId(name);


        }


        Component activePage = componentSource.getActivePage();


        // This is unlikely but may be possible if people override some of the standard
        // exception reporting logic.


        if (activePage == null)
            return;


        ComponentResources activePageResources = activePage.getComponentResources();


        try
        {


            activePageResources.triggerEvent(EventConstants.PREALLOCATE_FORM_CONTROL_NAMES, new Object[]

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