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.

        Select select = new Select();


        select.setModel(new SelectModelImpl(null, options));
        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 select = new Select();


        select.setModel(new SelectModelImpl(null, options));
        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 select = new Select();


        select.setModel(new SelectModelImpl(groupModels, null));
        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), TapestryUtils
                .toOptionModels("Wilma,Betty")));
        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 select = new Select();


        select.setModel(new SelectModelImpl(Collections.singletonList(husbands), null));
        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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        return tracker.inError(field);
    }


    private void addErrorClassToCurrentElement()
    {
        MarkupWriter writer = _environment.peekRequired(MarkupWriter.class);


        Element element = writer.getElement();


        addErrorClass(element);
    }

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    }


    @Test
    public void label_error_no_existing_class_attribute()
    {
        MarkupWriter writer = new MarkupWriterImpl(new XMLMarkupModel(), null);
        Environment env = newEnvironment();
        Field field = newField();
        ValidationTracker tracker = newValidationTracker();


        train_peekRequired(env, ValidationTracker.class, tracker);
        train_inError(tracker, field, true);


        replay();


        Element e = writer.element("label", "accesskey", "f");


        ValidationDecorator decorator = new DefaultValidationDecorator(env);


        decorator.insideLabel(field, e);


        assertEquals(writer.toString(), "<label accesskey=\"f\" class=\"t-error\"/>");


        verify();
    }

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    }


    @Test
    public void label_error_with_existing_class_attribute()
    {
        MarkupWriter writer = new MarkupWriterImpl(new XMLMarkupModel(), null);
        Environment env = newEnvironment();
        Field field = newField();
        ValidationTracker tracker = newValidationTracker();


        train_peekRequired(env, ValidationTracker.class, tracker);
        train_inError(tracker, field, true);


        replay();


        Element e = writer.element("label", "accesskey", "f", "class", "foo");


        ValidationDecorator decorator = new DefaultValidationDecorator(env);


        decorator.insideLabel(field, e);


        assertEquals(writer.toString(), "<label accesskey=\"f\" class=\"foo t-error\"/>");


        verify();
    }

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    }


    @Test
    public void field_error()
    {
        MarkupWriter writer = new MarkupWriterImpl(new XMLMarkupModel(), null);
        Environment env = newEnvironment();
        Field field = newField();
        ValidationTracker tracker = newValidationTracker();


        train_peekRequired(env, ValidationTracker.class, tracker);
        train_inError(tracker, field, true);
        train_peekRequired(env, MarkupWriter.class, writer);


        replay();


        writer.element(
                "input",
                "type",
                "text",
                "name",
                "ex",
                "class",
                "foo",
                "value",
                "freddy",
                "size",
                "30");


        ValidationDecorator decorator = new DefaultValidationDecorator(env);


        decorator.insideField(field);


        assertEquals(
                writer.toString(),
                "<input class=\"foo t-error\" name=\"ex\" size=\"30\" type=\"text\" value=\"freddy\"/>");


        verify();
    }

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public class MarkupWriterImplTest extends InternalBaseTestCase
{
    @Test(expectedExceptions = IllegalStateException.class)
    public void write_with_no_current_element()
    {
        MarkupWriter w = new MarkupWriterImpl();


        w.write("fail!");
    }

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org.apache.tapestry.corelib.base.AbstractLinkTest

org.apache.tapestry.corelib.components.OutputRawTest

org.apache.tapestry.corelib.components.OutputTest

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org.apache.tapestry.corelib.components.SelectTest

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org.apache.tapestry.internal.services.MarkupWriterImplTest

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