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.

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


                    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
            {

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            // Add all the normal components to the final list.


            while (i.hasNext())
            {
                Component mixin = i.next();


                if (mixin.getComponentResources().getComponentModel().isMixinAfter()) continue;


                ordered.add(mixin);


                // Remove from list, leaving just the late executing mixins

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        return coreResources.getLogger();
    }


    public Component getMixinByClassName(String mixinClassName)
    {
        Component result = null;


        if (mixinIdToComponentResources != null)
        {
            for (InternalComponentResources resources : mixinIdToComponentResources.values())
            {

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        replay();


        Instantiator inst = source.getInstantiator(classname);


        Component target = inst.newInstance(resources);


        verify();


        return target;
    }

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    @Test
    public void peek_required_without_value_is_error()
    {
        Environment e = new EnvironmentImpl();
        Location l = mockLocation();
        Component c = mockComponent();


        replay();


        e.push(Location.class, l);
        e.push(Component.class, c);

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        return coreResources.getLogger();
    }


    public Component getMixinByClassName(String mixinClassName)
    {
        Component result = mixinForClassName(mixinClassName);


        if (result == null)
            throw new TapestryException(StructureMessages.unknownMixin(completeId, mixinClassName), getLocation(), null);


        return result;

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    @Test
    public void render_informal_parameters_no_bindings()
    {
        ComponentPageElement element = mockComponentPageElement();
        Component component = mockComponent();
        Instantiator ins = mockInstantiator(component);
        MarkupWriter writer = mockMarkupWriter();
        TypeCoercer coercer = mockTypeCoercer();
        ComponentModel model = mockComponentModel();

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    @Test
    public void render_informal_parameters_skips_formal_parameters()
    {
        ComponentPageElement element = mockComponentPageElement();
        Component component = mockComponent();
        Instantiator ins = mockInstantiator(component);
        MarkupWriter writer = mockMarkupWriter();
        ComponentModel model = mockComponentModel();
        ParameterModel pmodel = mockParameterModel();
        Binding binding = mockBinding();

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    public void special_prop_binding_values(String expression, Object expected)
    {
        Location l = mockLocation();
        String description = "my description";
        ComponentResources resources = mockComponentResources();
        Component component = mockComponent();


        train_getComponent(resources, component);
        train_getCompleteId(resources, "Does.not.matter");


        replay();

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    @Test
    public void render_an_informal_parameter()
    {
        ComponentPageElement element = mockComponentPageElement();
        Component component = mockComponent();
        Instantiator ins = mockInstantiator(component);
        MarkupWriter writer = mockMarkupWriter();
        ComponentModel model = mockComponentModel();
        Binding binding = mockBinding();
        Object rawValue = new Long(97);

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