Examples of org.apache.tapestry.MarkupWriter

org.apache.tapestry.MarkupWriter
An interface used by objects, such as Tapestry components, that need to render themselves as some form of XML markup. A markup writer maintains the idea of a current element. Attributes are added to the current element, and new text and elements are placed inside the current element. In this way, the markup writer maintains a facade that XML markup is generated as a stream, even though the implementation builds a kind of DOM tree. The DOM tree can be also be manipulated. This solves a number of problems from Tapestry 4 (and earlier) where random access to the DOM was desired and had to be simulated through complex buffering.

    @Test
    public void writer_notifies_map_about_links()
    {
        ComponentInvocationMap map = mockComponentInvocationMap();


        MarkupWriter writer = new MarkupWriterImpl(new XMLMarkupModel(), map);
        Link link = mockLink();


        Element e = writer.element("form");


        map.store(e, link);


        replay();


        writer.attributes("action", link);


        verify();
    }

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    }


    @Test
    public void write_raw()
    {
        MarkupWriter w = new MarkupWriterImpl();


        w.element("root");
        w.write("<");
        w.writeRaw("&nbsp;");
        w.write(">");
        w.end();


        assertEquals(w.toString(), "<root>&lt;&nbsp;&gt;</root>");
    }

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    @Test
    public void text_element()
    {
        ComponentInstantiatorSource source = mockComponentInstantiatorSource();
        ComponentClassResolver resolver = mockComponentClassResolver();
        MarkupWriter writer = new MarkupWriterImpl();
        Location l = mockLocation();
        RenderQueue queue = mockRenderQueue();


        replay();


        PageElementFactory factory = new PageElementFactoryImpl(source, resolver, null, null, null);
        TextToken token = new TextToken("some text", l);


        PageElement element = factory.newTextElement(token);


        writer.element("root");
        element.render(writer, queue);


        verify();


        assertEquals(element.toString(), "Text[some text]");
        assertEquals(writer.toString(), "<root>some text</root>");
    }

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    {
        ComponentInstantiatorSource source = mockComponentInstantiatorSource();
        ComponentClassResolver resolver = mockComponentClassResolver();
        RenderQueue queue = mockRenderQueue();
        ComponentPageElement component = mockComponentPageElement();
        MarkupWriter writer = newMock(MarkupWriter.class);


        component.enqueueBeforeRenderBody(queue);


        replay();

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    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();


        train_getModel(ins, model);

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

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    public void render_an_informal_parameter()
    {
        ComponentPageElement element = mockComponentPageElement();
        Component component = mockComponent();
        Instantiator ins = mockInstantiator(component);
        MarkupWriter writer = mockMarkupWriter();
        TypeCoercer coercer = mockTypeCoercer();
        ComponentModel model = mockComponentModel();
        Binding binding = mockBinding();
        Object rawValue = new Object();
        String convertedValue = "*converted*";


        train_getModel(ins, model);


        train_getParameterModel(model, "fred", null);


        train_get(binding, rawValue);


        train_coerce(coercer, rawValue, String.class, convertedValue);


        writer.attributes("fred", convertedValue);


        replay();


        InternalComponentResources resources = new InternalComponentResourcesImpl(element, null,
                ins, coercer, null);

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    @Test
    public void start_element()
    {
        ComponentInstantiatorSource source = mockComponentInstantiatorSource();
        ComponentClassResolver resolver = mockComponentClassResolver();
        MarkupWriter writer = new MarkupWriterImpl();
        Location l = mockLocation();
        RenderQueue queue = mockRenderQueue();


        replay();


        PageElementFactory factory = new PageElementFactoryImpl(source, resolver, null, null, null);
        StartElementToken token = new StartElementToken("fred", l);


        PageElement element = factory.newStartElement(token);


        element.render(writer, queue);


        verify();


        assertEquals(element.toString(), "Start[fred]");
        assertEquals(writer.toString(), "<fred></fred>");
    }

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    @Test
    public void attribute()
    {
        ComponentInstantiatorSource source = mockComponentInstantiatorSource();
        ComponentClassResolver resolver = mockComponentClassResolver();
        MarkupWriter writer = new MarkupWriterImpl(_xmlModel, null);
        Location l = mockLocation();
        RenderQueue queue = mockRenderQueue();


        replay();


        PageElementFactory factory = new PageElementFactoryImpl(source, resolver, null, null, null);
        AttributeToken token = new AttributeToken("name", "value", l);


        PageElement element = factory.newAttributeElement(null, token);


        writer.element("root");


        element.render(writer, queue);


        verify();


        assertEquals(writer.toString(), "<root name=\"value\"/>");
    }

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    @Test
    public void end_element()
    {
        ComponentInstantiatorSource source = mockComponentInstantiatorSource();
        ComponentClassResolver resolver = mockComponentClassResolver();
        MarkupWriter writer = new MarkupWriterImpl(_xmlModel, null);
        RenderQueue queue = mockRenderQueue();


        replay();


        PageElementFactory factory = new PageElementFactoryImpl(source, resolver, null, null, null);


        PageElement element = factory.newEndElement();


        writer.element("root");
        writer.write("before");
        writer.element("nested");


        element.render(writer, queue);


        writer.write("after");


        verify();


        assertEquals(element.toString(), "End");
        assertEquals(writer.toString(), "<root>before<nested/>after</root>");
    }

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Related Classes of org.apache.tapestry.MarkupWriter

org.apache.tapestry.corelib.base.AbstractLinkTest

org.apache.tapestry.corelib.components.OutputRawTest

org.apache.tapestry.corelib.components.OutputTest

org.apache.tapestry.corelib.components.PageLinkTest

org.apache.tapestry.corelib.components.SelectTest

org.apache.tapestry.corelib.components.TextOutputTest

org.apache.tapestry.internal.DefaultValidationDecorator

org.apache.tapestry.internal.DefaultValidationDecoratorTest

org.apache.tapestry.internal.services.AjaxPartialResponseRendererImpl

org.apache.tapestry.internal.services.MarkupWriterImplTest

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