## Data loading indicator

Loading of data for the visualization but also computation of the diagram can take a while for larger data sets. You can use the `CarrotSearchFoamTree.loader` utility to show a simple Loading... message to the user.

#### Experiments

Load data set: tiny | small | large
Load data set with a 1500 ms delay: tiny | small | large
Animations: none | fading | scaling

#### What's in the code?

- Including the `carrotsearch.foamtree.loading.css` stylesheet with default CSS for the loading indicator container.
- CSS for the contents of the loading indicator.
- Including the `CarrotSearchFoamTree.loader` script and using it to show and hide the indicator when appropriate.