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From "Mihai Chira (JIRA)" <j...@apache.org>
Subject [jira] [Created] (FLEX-34941) Allow custom validators to use the triggerEvent
Date Sun, 11 Oct 2015 13:09:05 GMT
Mihai Chira created FLEX-34941:

             Summary: Allow custom validators to use the triggerEvent
                 Key: FLEX-34941
                 URL: https://issues.apache.org/jira/browse/FLEX-34941
             Project: Apache Flex
          Issue Type: Improvement
          Components: Validators
    Affects Versions: Apache Flex 4.14.1
            Reporter: Mihai Chira
            Assignee: Mihai Chira
            Priority: Minor
             Fix For: Apache Flex 4.15.0

The private triggerHandler() function only starts validation, without storing or using the
event object. However, there are scenarios in which this object is crucial. For instance:

There are two pathways to change the properties of an object: through a DataGrid itemEditor,
and through a form, which are side by side. As a user I want to see in the grid when I have
made an invalid change via the form.

One cannot just add validators to the itemEditors in the grid, because they will not be instantiated
if the changes happen via the form. But the red rectangle and errorString properties still
need to be set when the wrong values are set.

A solution is to have the renderers dispatch a custom bubbling event when their data changes,
catch this event in a validator on the view that contains both the grid and the form, and
set the source and property dynamically on the validator when this event occurs, so that it
can effect the change to the border and errorString of the renderer. For this, however, we
need the event object in triggerHandler.

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