code-dot-org/code-dot-org — pull request #664 by joshlory (2014-12-04 03:29:27+00:00)
Title: Allow callouts to appear when an event is triggered

Callouts can subscribe to any event fired on `window. Sample:
[{
"localization_key": "run",
"element_id": "#runButton",
"on": "function_editor_opened"
}]