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Question

Is it possible to reuse GWT UIBinder panels?

Answer 1

+1 A:

You can definitely import views you've written, both UIBinder templates and regular Widgets, into another UIBinder template.

From the UIBinder docs:

<ui:UiBinder xmlns:ui='urn:ui:com.google.gwt.uibinder'
    xmlns:g='urn:import:com.google.gwt.user.client.ui'
    xmlns:my='urn:import:com.my.app.widgets' >

  <g:HTMLPanel>
    <my:WeatherReport ui:field='weather'/>

    <my:Stocks ui:field='stocks'/>
    <my:CricketScores ui:field='scores' />
  </g:HTMLPanel>
</ui:UiBinder>

Notice how the Stocks and CricketScores widgets are imported from your own package.

You won't necessarily need to do this just to show/hide tabs based on user privileges, you can just show/hide your tabs in your GWT code based on access levels.

Jason Hall 2010-06-24 04:04:14

Where is Stocks defined? I want to continue to define my layouts in XML, since I feel that would be more manageable than defining them in Java code.

pkaeding 2010-06-24 04:56:36

According to the code above, Stocks should be in com.my.app.widgets package.

markovuksanovic 2010-06-24 06:13:51

Yeah, my question was more along the lines of, "Where is the UIBinder layout for Stocks defined?" I think @Ashwin Prabhu's response may answer that question, though.

pkaeding 2010-06-24 14:20:51

Answer 2

+5 A:

Define each tab content as a separate UiBinder template. Since UiBinder classes are Composites you can add them to any container just like any other widget.

You can assemble your TabLayoutPanel in code by adding each UiBinder templeted object into a tab in the TabPanel or define another UiBinder Template with the TabPanel and all the Tabs defined.

If you go the UiBinder route for templating the TabLayoutPanel, import the tab panel contents (Composites you defined earlier using UiBinder) into the UiBinder by defining a new 'namespace' pointing to the package where all your composites reside. You then refer to your composites as namespace:ClassName in the UiBinder template.

if com.project.package is where you keep all your composites which you want embeded in individual tabs then define a new namespace f as xmlns:f= 'com.project.package' soon after xmlns:g declaration.

You refer to individual composites in your UiBinder as

<f:Composite1 /> 
<f:Composite2 />

Ashwin Prabhu 2010-06-24 07:46:25

Thanks, this looks promising. I will give it a shot.

pkaeding 2010-06-24 14:21:12

That did the trick; thanks!

pkaeding 2010-07-02 05:36:17

pretty simple, ain't it?

Ashwin Prabhu 2010-07-02 05:47:16

Yes, I knew there must be an easy way to do this! I did, however, get surprised that onModuleLoad() doesn't get called automatically when using this approach. Is that to be expected? I was able to call it from the constructor myself, and everything seems to be working, but I just want to be sure I'm not missing something (again :).

pkaeding 2010-07-04 22:45:07

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