Comment 6 for bug 1514627

Reviewed: https://review.openstack.org/290800
Committed: https://git.openstack.org/cgit/openstack/horizon/commit/?id=05b53f7d60c2e9e0c7538348656442a89a03d3fd
Submitter: Jenkins
Branch: master

commit 05b53f7d60c2e9e0c7538348656442a89a03d3fd
Author: Tyr Johanson <email address hidden>
Date: Wed Mar 9 12:22:44 2016 -0700

    Images Actions Return Promises

    The Angular images actions now consistently return a promise. This allows
    a view to fetch an image related action from the registry, call it, and
    have a consistent way to know that it is complete.

    For actions, promises are preferred over events because they require
    less setup and teardown, better handle the asynchronous nature of
    modals, don't require a parent-child scope relationship and finally
    allow for success/fail handler chaining.

    Future patches may add data to the promise so that the view can know
    which items were affected by the action.

    This patch simply returns promises from actions as this is
    a pattern I'd like to establish for Mitaka. Usage of these promises is
    left to a follow-on patch. Also, removing the event mechanism from actions
    is left to a follow-on patch.

    Change-Id: I78d189d6eb026bd98abba6451641010104fc5002
    Partially-Implements: blueprint angularize-images-table
    Closes-Bug: 1555929
    Partial-Bug: 1514627