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 new_text_node_after_comment_node()
    {
        MarkupWriter w = new MarkupWriterImpl();


        w.element("root");
        w.write("before");
        w.comment("A comment");
        w.write("after");
        w.end();


        assertEquals(w.toString(), "<root>before<!-- A comment -->after</root>");
    }

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    }


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


        w.element("root");
        w.write(null);
        w.end();


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

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    }


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


        w.element("root");
        w.writef("Test name: %s", "writef");


        assertEquals(w.toString(), "<root>Test name: writef</root>");
    }

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


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


        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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     */
    public Document invoke(ComponentInvocation invocation)
    {
        try
        {
            final MarkupWriter writer = _writerFactory.newMarkupWriter();


            _pageLinkHandler.handle(invocation, new PageRenderer()
            {


                public void renderPage(Page page)
                {
                    _renderer.renderPageMarkup(page, writer);
                }


            });


            return writer.getDocument();
        }
        finally
        {
            _registry.cleanupThread();
        }

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    public void renderPageResponse(Page page, Response response) throws IOException
    {
        // Eventually we'll have to do work to figure out the correct markup type, content type,
        // whatever. Right now its defaulting to plain HTML.


        MarkupWriter writer = _markupWriterFactory.newMarkupWriter();


        _markupRenderer.renderPageMarkup(page, writer);


        PrintWriter pw = response.getPrintWriter("text/html");


        writer.toMarkup(pw);


        pw.flush();
    }

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        String charset = pageContentType.getParameter(InternalConstants.CHARSET_CONTENT_TYPE_PARAMETER);


        ContentType contentType = new ContentType("text/javascript");
        contentType.setParameter(InternalConstants.CHARSET_CONTENT_TYPE_PARAMETER, charset);


        MarkupWriter writer = _factory.newMarkupWriter(pageContentType);


        JSONObject reply = new JSONObject();


        // ... and here, the pipeline eventually reaches the PRQ to let it render the root render command.

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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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    }


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


        w.write("  ");


        w.element("root");
        w.end();


        assertEquals(w.toString(), "<?xml version=\"1.0\"?>\n<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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