iOS Safari - Tree Panning

[jimmyz]

Panning does not work in the tree view on iOS Safari. Perhaps it needs to listen for touch events.

[lmonson]

As you suspected, the problem is that the underlying angular directive we are using doesn't understand touch events (other than to mimic a mouse click).

I can make this work, but it's more than a simple bugfix. It's about 2 days of work using either of two approaches:

1. Abandon the directive we are using and switch to a jQuery plugin for pan/zoom.
2. Implement gesture support in the directive we are using

Is it worth doing?