Extending CDF and CDE with new components

When we covered the query component, you must have been asking: If I want to use this for multiple dashboards, do I need to apply my own code over and over again for every dashboard? The answer is, no. With the custom components, you are perfectly able to create components that can be reusable in CDF or in CDE.

What changes between CDE and CDF, is that, for CDE, you also need to include a XML file with the information about what should we see in the dashboard editor. Let's see how can you create your custom components.

Extending CDF

I would like you to consider two different kinds of components: those that allow filtering and those that allow you to display data in the dashboard. Of course, the ones that display information can also be used as selectors, but just add functionality to those that are really to allow visualizations of data on the dashboard.

You should remember from Chapter 3, Building the Dashboard Using CDF, that components can run asynchronously...