Constructor
new PromiseController()
A promise does not have bindable properties. This controller tracks the
state of a promise with bindable properties so you can create a substitution
that binds the viewed component with the state of the promise.
- "pending" with "progress"
when in the pending state, bind the substituted component to the
progress value, which is null when indeterminate or a 0-1 value
when determinate. Most promises are indeterminate due to the
complexities of composing progress information into meaningful
data.
- "fulfilled" with "value"
when in the fulfilled state, bind the substituted component to the
value.
- "rejected" with "error"
when in the rejected state, bind the substituted component to the
given error, if you can surface that error to the user.
- "state" (one of "pending", "fulfilled", or "rejected")
suitable for substitutions that will always render an indeterminate
progress in the "pending" state.
- "progressState" (one of "determinate", "indeterminate", "fuilfilled", "rejected")
suitable for substitutions that provide alternative view for
determinate and indeterminate progress.
- Source: