Examples of org.apache.tapestry.runtime.Component

org.apache.tapestry.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.
This interface is likely to change without notice.


    @Test
    public void get_embedded_does_not_exist()
    {
        Page page = newPage(PAGE_NAME);
        Component component = mockComponent();
        ComponentModel model = mockComponentModel();
        TypeCoercer coercer = mockTypeCoercer();


        Instantiator ins = newInstantiator(component, model);

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    @Test
    public void get_existing_embedded_component()
    {
        Page page = newPage(PAGE_NAME);
        Component component = mockComponent();
        ComponentModel model = mockComponentModel();
        ComponentPageElement childElement = mockComponentPageElement();
        Component childComponent = mockComponent();
        TypeCoercer coercer = mockTypeCoercer();


        Instantiator ins = newInstantiator(component, model);


        train_getId(childElement, "child");

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    @Test
    public void component_ids_must_be_unique_within_container()
    {
        Page page = newPage(PAGE_NAME);
        Component pageComponent = mockComponent();
        ComponentModel model = mockComponentModel();
        ComponentPageElement child1 = mockComponentPageElement();
        ComponentPageElement child2 = mockComponentPageElement();
        TypeCoercer coercer = mockTypeCoercer();
        Location l = mockLocation();

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    @Test
    public void get_mixin_by_class_name()
    {
        Page page = newPage(PAGE_NAME);
        Component component = mockComponent();
        ComponentModel model = mockComponentModel();
        TypeCoercer coercer = mockTypeCoercer();
        final String mixinClassName = "foo.Bar";
        Component mixin = mockComponent();
        ComponentModel mixinModel = mockComponentModel();


        Instantiator ins = newInstantiator(component, model);
        Instantiator mixinIns = newInstantiator(mixin, mixinModel);

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    @Test
    public void get_mixin_by_unknown_class_name()
    {
        Page page = newPage(PAGE_NAME);
        Component component = mockComponent();
        ComponentModel model = mockComponentModel();
        TypeCoercer coercer = mockTypeCoercer();
        Component mixin = mockComponent();
        ComponentModel mixinModel = mockComponentModel();


        Instantiator ins = newInstantiator(component, model);
        Instantiator mixinIns = newInstantiator(mixin, mixinModel);

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    @Test
    public void set_explicit_parameter_of_unknown_mixin()
    {
        Page page = newPage(PAGE_NAME);
        Component component = mockComponent();
        ComponentModel model = mockComponentModel();
        ComponentModel mixinModel = mockComponentModel();
        Component mixin = mockComponent();
        TypeCoercer coercer = mockTypeCoercer();
        Binding binding = mockBinding();


        Instantiator ins = newInstantiator(component, model);
        Instantiator mixinInstantiator = newInstantiator(mixin, mixinModel);

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


        Component component = setupForIntegrationTest(resources);


        // On first invocation, the resources are queried.


        String value = "To be in Tapestry in the spring time ...";


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


        replay();


        assertSame(_access.get(component, "invariantObject"), value);


        verify();


        // No further training needed here.


        replay();


        // Still cached ...


        assertSame(_access.get(component, "invariantObject"), value);


        component.postRenderCleanup();


        // Still cached ...


        assertSame(_access.get(component, "invariantObject"), value);


        component.containingPageDidDetach();


        // Still cached ...


        assertSame(_access.get(component, "invariantObject"), value);

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    public void special_prop_binding_value_null()
    {
        Location l = mockLocation();
        String description = "my description";
        ComponentResources resources = mockComponentResources();
        Component component = mockComponent();


        train_getComponent(resources, component);


        replay();

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


        Component component = setupForIntegrationTest(resources);


        // On first invocation, the resources are queried.


        long value = 123456;


        train_isLoaded(resources, true);
        train_isBound(resources, "invariantPrimitive", true);
        train_readParameter(resources, "invariantPrimitive", long.class, value);


        replay();


        assertEquals(_access.get(component, "invariantPrimitive"), value);


        verify();


        // No further training needed here.


        replay();


        // Still cached ...


        assertEquals(_access.get(component, "invariantPrimitive"), value);


        component.postRenderCleanup();


        // Still cached ...


        assertEquals(_access.get(component, "invariantPrimitive"), value);

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


        Component component = setupForIntegrationTest(resources);


        train_isLoaded(resources, false);


        replay();


        assertNull(_access.get(component, "object"));


        verify();


        train_isLoaded(resources, false);


        replay();


        _access.set(component, "object", "new-default");


        verify();


        train_isLoaded(resources, false);


        replay();


        assertEquals(_access.get(component, "object"), "new-default");


        verify();


        trainForPageDidLoad(resources);


        replay();


        component.containingPageDidLoad();


        verify();


        // For the set ...


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


        // For the first read ...


        train_isLoaded(resources, true);
        train_isBound(resources, "object", false);


        // For the second read (after postRenderCleanup) ...


        train_isLoaded(resources, true);
        train_isBound(resources, "object", false);


        replay();


        _access.set(component, "object", "new-value");
        assertEquals(_access.get(component, "object"), "new-value");


        component.postRenderCleanup();


        assertEquals(_access.get(component, "object"), "new-default");


        verify();
    }

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