I will be writing a few posts on connecting silverlight and drupal in which I will replicate my main site. I will be doing this piece by piece as I investigate each drupal module that I am using and how I can request the appropriate data to populate my silverlight controls. I have outlined the basics needed to accomplish this in my previous post and will be focusing on the new information that is needed to complete each new piece.

Drupal's aggregator module is a core module that is used for fetching syndicated content from other sites. However, it has the ability to provide an xml syndication button for your drupal site if you decide to show the syndication block. There is much more functionality that this module can provide, but all I needed was a simple link to my sites syndication. After doing some initial research I did not find a way to call some method that returned my sites syndication. So I decided to 'cheat' a little bit and produce my sites syndication link manually (at least I did not hard code this!). Here is the php below:

$mainSiteRSS = variable_get('site_name', 'Drupal');
$mainSiteRSS .= url('rss.xml');
return array('rssLoaded', $mainSiteRSS);

I simply grab the sites name, append 'rss.xml' and return a correctly formatted url string to my silverlight application. I then tie that url to my rss button:

private void rssLoaded(object feedSite)
{
    string rssLocation = ((MethodToCall)feedSite).MethodName;
    Uri rssLink = new Uri("http://" + rssLocation, UriKind.RelativeOrAbsolute);
    HtmlPage.Window.Navigate(rssLink);            
}

Remember, I have a generic method that gets called when drupal returns its data that casts the data to a MethodToCall object as outlined in my previous post.

And that's it! This was one of the simpler controls and that is one reason that I decided to start with this one. The silverlight code was very simple as well; just a button that looks like the standard rss icon that was made using Expression Blend that has a click event that sends a request to drupal to return my sites syndication link, as outlined above in the php code. Here is the XAML for the rss icon:

<Button Click="rss_Click">
    <Button.Template>
        <ControlTemplate TargetType="Button">
            <Canvas>
                <Rectangle Width="50" Height="50" Fill="Orange" RadiusX="5" RadiusY="5" />
                <Canvas>
                    <Ellipse Width="10" Height="10" Fill="White" Canvas.Left="10" Canvas.Top="30" />
                    <Path Stroke="White" StrokeThickness="5" StrokeStartLineCap="Round" StrokeEndLineCap="Round" Data="M 15,20 a 15,15 90 0 1 15,15" />
                    <Path Stroke="White" StrokeThickness="5" StrokeStartLineCap="Round" StrokeEndLineCap="Round" Data="M 15,10 a 25,25 90 0 1 25,25" />
                </Canvas>
            </Canvas>
        </ControlTemplate>
    </Button.Template>
</Button>

I will post my full source code when I complete this entire replication of my site to silverlight. Until then, I will post the source for each control in a separate solution. If there is a specific drupal module that you would like converted to a silverlight control let me know and I will try to help you out!

AttachmentSize
SLDrupal - RSS.rar141.97 KB
RSSIcon.xaml939 bytes
rssmodule.txt652 bytes