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PODeckLayoutPanel in a HTMLPanel with HTML table doesn't display
 

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    <p>I have a GWT app with one main panel showing a table of PostgreSQL instances. I want the app to show other kinds of instances, e.g. Redis instances. So I'm initially wrapping the main panel in a DeckLayoutPanel to swap out the PostgreSQL panel with a Redis panel. There will a vertical menu on the left side that the user will use to select the type of instance to show.</p> <p>Adding DeckLayoutPanel to the UI XML causes the main panel to not display, although I do see the content in a DOM inspector.</p> <p>Here's the original, working UI, without <code>g:DeckLayoutPanel</code>:</p> <pre><code>&lt;!DOCTYPE ui:UiBinder SYSTEM "http://dl.google.com/gwt/DTD/xhtml.ent"&gt; &lt;ui:UiBinder xmlns:ui="urn:ui:com.google.gwt.uibinder" xmlns:g="urn:import:com.google.gwt.user.client.ui"&gt; &lt;g:HTMLPanel&gt; &lt;table width="100%" border="1"&gt; &lt;tr&gt; &lt;td colspan="2" align="left"&gt; &lt;a href="/"&gt;Logo&lt;/a&gt; &lt;/td&gt; &lt;td colspan="2" align="right"&gt; Hello John &lt;/td&gt; &lt;/tr&gt; &lt;tr&gt; &lt;td colspan="4"&gt; &lt;g:VerticalPanel ui:field="instancesPanel"&gt; &lt;g:Label ui:field="mainErrorLabel" /&gt; &lt;g:FlexTable ui:field="flexTable" /&gt; &lt;g:HorizontalPanel&gt; &lt;g:TextBox ui:field="createInstanceTextBox" /&gt; &lt;g:ListBox ui:field="createInstanceVersionsListBox" /&gt; &lt;g:Button ui:field="createInstanceButton"&gt;Create&lt;/g:Button&gt; &lt;g:Label ui:field="createInstanceErrorLabel" /&gt; &lt;/g:HorizontalPanel&gt; &lt;/g:VerticalPanel&gt; &lt;/td&gt; &lt;/tr&gt; &lt;tr&gt; &lt;td&gt;Help&lt;/td&gt; &lt;td&gt;About&lt;/td&gt; &lt;td&gt;Contact&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; &lt;/g:HTMLPanel&gt; &lt;/ui:UiBinder&gt; </code></pre> <p>If I remove the <code>g:HTMLPanel</code> and also the HTML table, trimming it to, this works:</p> <pre><code>&lt;!DOCTYPE ui:UiBinder SYSTEM "http://dl.google.com/gwt/DTD/xhtml.ent"&gt; &lt;ui:UiBinder xmlns:ui="urn:ui:com.google.gwt.uibinder" xmlns:g="urn:import:com.google.gwt.user.client.ui"&gt; &lt;g:DeckLayoutPanel ui:field="deckLayoutPanel"&gt; &lt;g:VerticalPanel ui:field="instancesPanel"&gt; &lt;g:Label ui:field="mainErrorLabel" /&gt; &lt;g:FlexTable ui:field="flexTable" /&gt; &lt;g:HorizontalPanel&gt; &lt;g:TextBox ui:field="createInstanceTextBox" /&gt; &lt;g:ListBox ui:field="createInstanceVersionsListBox" /&gt; &lt;g:Button ui:field="createInstanceButton"&gt;Create&lt;/g:Button&gt; &lt;g:Label ui:field="createInstanceErrorLabel" /&gt; &lt;/g:HorizontalPanel&gt; &lt;/g:VerticalPanel&gt; &lt;/g:DeckLayoutPanel&gt; &lt;/ui:UiBinder&gt; </code></pre> <p>I'm using an HTML table here since I'm not a front-end designer and I have similar HTML for the non-GWT JSP pages (using a JSTL tag) so want to make sure the GWT and non-GWT pages render the same.</p> <p>Should I be using something else than a table? Should I switch to <code>div</code>s for placement instead? Is using a <code>g:DeckLayoutPanel</code> in an HTML table not supported? How is one supposed to get identical HTML pages for GWT and non-GWT pages if one needs to use only GWT layout widgets?</p> <p>BTW, I tried using RootPanel and that didn't work either with the HTML page.</p> <p>I'm binding to it using:</p> <pre><code>interface Binder extends UiBinder&lt;HTMLPanel, MyWebApp&gt; { } private static final Binder binder = GWT.create(Binder.class); @UiField DeckLayoutPanel deckLayoutPanel; @UiField VerticalPanel instancesPanel; @Override public void onModuleLoad() { HTMLPanel outer = binder.createAndBindUi(this); // Tweak a bunch of settings on the UI elements. ... RootLayoutPanel.get().add(outer); deckLayoutPanel.showWidget(instancesPanel); } </code></pre> <p>The HTML hosting the page is this:</p> <pre><code>&lt;!doctype html&gt; &lt;%@ page contentType="text/html; charset=UTF-8" pageEncoding="UTF-8" %&gt; &lt;html&gt; &lt;head&gt; &lt;link type="text/css" rel="stylesheet" href="MyWebApp.css"&gt; &lt;title&gt;MyWebApp&lt;/title&gt; &lt;script type="text/javascript" language="javascript" src="MyWebApp/MyWebApp.nocache.js"&gt;&lt;/script&gt; &lt;/head&gt; &lt;body&gt; &lt;iframe src="javascript:''" id="__gwt_historyFrame" tabIndex='-1' style="position:absolute;width:0;height:0;border:0"&gt;&lt;/iframe&gt; &lt;noscript&gt; &lt;div style="width: 22em; position: absolute; left: 50%; margin-left: -11em; color: red; background-color: white; border: 1px solid red; padding: 4px; font-family: sans-serif"&gt; Your web browser must have JavaScript enabled in order for this application to display correctly. &lt;/div&gt; &lt;/noscript&gt; &lt;/body&gt; &lt;/html&gt; </code></pre>
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