Observe button clicks for the given button. Returns the Observable. Subscribers will receive a Map
{:source btn :event evt :field-group fg} where source is the source of the click (the btn), event is the ClickEvent
and fg is the Fieldgroup of the form that the btn is on, or nil if there is no form

Observe events from a function. On subscription, act-fn is executed asynchronously in a future and passed the subscriber (s)
and any extra args provided. Events are indicated by using (rx/on-next s) within the function. (rx/on-completed s) is sent when the
function completes, and any exceptions thrown are reported with (rx/on-error s e). The function should check for unsuncribes, and
act appropriately (usually terminating).

Generate events from mouse clicks in a table header. Subscribers will receive a value that is a Map with keys
:source :event :propertyId

Generate events from mouse clicks in a table header. Subscribers will receive a value that is a Map with keys
:source :event :propertyId

Observe value changes for the given notifier. Returns the Observable. Subscribers will receive a Map
{:source notifier :event evt} where source is the source of the click (the notifier) and event is the MouseClickEvent.

Observe text changes for the given notifier. Returns the Observable. Subscribers will receive a Map
{:source textField :event evt} where source is the source of the click (the textField) and event is the TextChangeEvent.

Observe value changes for the given notifier. Returns the Observable. Subscribers will receive a Map
{:source notifier :event evt :field-group fg} where source is the source of the click (the notifier), event is the ValueChangeEvent
and fg is the Fieldgroup of the form that the notifier is on, or nil if there is no form.

Add a set of shortcut actions to a Panel or Window, and generate events that track their activation. Actions are a
list of action specs, which are Maps with keys :name and :keycode. These specify the action and keycode for eact action.

On activation, sunscribers will receive a value that is a Map of :action, :sender and :target keys. These are as passed
to the handleAction method of the Action.Listener interface.