name: Dialog

purpose: Modal-based alert and confirmation dialog.

methods:
  Dialog.show: Show a custom dialog and resolve with its button index.
  Dialog.alert: Show a message and resolve after closing.
  Dialog.confirm: Show Cancel/Confirm and resolve to boolean.

state:
  title: Dialog title.
  message: Dialog body text.
  buttons: Button labels.
  type: Bootstrap contextual type.

examples:
  alert: "Dialog.alert('Saved successfully')"
  confirm: "Dialog.confirm('Delete this record?').then(ok => { if (ok) remove() })"

tests:
  - Dialog.test.html