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 simple_output()
    {
        MarkupWriter writer = createMarkupWriter();
        ComponentResources resources = mockComponentResources();


        replay();


        Output component = new Output();


        component.setup(_value, _format, null, resources);


        writer.element("root");
        assertFalse(component.beginRender(writer));
        writer.end();


        verify();


        assertEquals(writer.toString(), "<root>22.70</root>");
    }

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    @Test
    public void output_with_element_and_informals()
    {
        String elementName = "span";


        MarkupWriter writer = createMarkupWriter();


        ComponentResources resources = mockComponentResources();


        train_renderInformalParameters(resources, writer, "foo", "bar");


        replay();


        Output component = new Output();


        component.setup(_value, _format, elementName, resources);


        assertFalse(component.beginRender(writer));


        verify();


        assertEquals(writer.toString(), "<span foo=\"bar\">22.70</span>");
    }

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    @Test
    public void null_format_is_a_noop()
    {
        String elementName = "span";


        MarkupWriter writer = createMarkupWriter();


        ComponentResources resources = mockComponentResources();


        Format format = new Format()
        {
            private static final long serialVersionUID = -4360045992642727894L;


            @Override
            public StringBuffer format(Object obj, StringBuffer toAppendTo, FieldPosition pos)
            {
                return toAppendTo;
            }


            @Override
            public Object parseObject(String source, ParsePosition pos)
            {
                return null;
            }
        };


        replay();


        Output component = new Output();


        component.setup(_value, format, elementName, resources);


        writer.element("root");
        assertFalse(component.beginRender(writer));
        writer.end();


        verify();


        assertEquals(writer.toString(), "<root></root>");
    }

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        select.setModel(new SelectModelImpl(null, options));
        select.setValueEncoder(new StringValueEncoder());
        select.setValue("barney");


        MarkupWriter writer = new MarkupWriterImpl(new XMLMarkupModel(), null);


        writer.element("select");


        select.options(writer);


        writer.end();


        assertEquals(writer.toString(), read("just_options.html"));
    }

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        select.setModel(new SelectModelImpl(null, options));
        select.setValueEncoder(new StringValueEncoder());
        select.setValue("barney");


        MarkupWriter writer = new MarkupWriterImpl(new XMLMarkupModel(), null);


        writer.element("select");


        select.options(writer);


        writer.end();


        assertEquals(writer.toString(), read("option_attributes.html"));
    }

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        select.setModel(new SelectModelImpl(null, options));
        select.setValueEncoder(new StringValueEncoder());
        select.setValue("barney");


        MarkupWriter writer = new MarkupWriterImpl(new XMLMarkupModel(), null);


        writer.element("select");


        select.options(writer);


        writer.end();


        assertEquals(writer.toString(), read("disabled_option.html"));


    }

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        select.setModel(new SelectModelImpl(groupModels, null));
        select.setValueEncoder(new StringValueEncoder());
        select.setValue("Fred");


        MarkupWriter writer = new MarkupWriterImpl(new XMLMarkupModel(), null);


        writer.element("select");


        select.options(writer);


        writer.end();


        assertEquals(writer.toString(), read("option_groups.html"));
    }

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        select.setModel(new SelectModelImpl(Collections.singletonList(husbands),
                TapestryInternalUtils.toOptionModels("Wilma,Betty")));
        select.setValueEncoder(new StringValueEncoder());
        select.setValue("Fred");


        MarkupWriter writer = new MarkupWriterImpl(new XMLMarkupModel(), null);


        writer.element("select");


        select.options(writer);


        writer.end();


        assertEquals(writer.toString(), read("option_groups_precede_ungroup_options.html"));
    }

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        select.setModel(new SelectModelImpl(Collections.singletonList(husbands), null));
        select.setValueEncoder(new StringValueEncoder());
        select.setValue("Fred");


        MarkupWriter writer = new MarkupWriterImpl(new XMLMarkupModel(), null);


        writer.element("select");


        select.options(writer);


        writer.end();


        assertEquals(writer.toString(), read("option_group_attributes.html"));
    }

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    }


    @Test
    public void simple_output()
    {
        MarkupWriter writer = createMarkupWriter();
        ComponentResources resources = mockComponentResources();


        replay();


        Output component = new Output();


        component.setup(_value, _format, null, resources);


        writer.element("root");
        assertFalse(component.beginRender(writer));
        writer.end();


        verify();


        assertEquals(writer.toString(), "<root>22.70</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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