[FLEX-34941] Allow custom validators to use the triggerEvent

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: Apache Flex 4.14.1
• Fix Version/s: Apache Flex 4.15.0
• Component/s: Validators
• Assignee: Mihai Chira
• Reporter: Mihai Chira
• Created: 11/Oct/15 13:09
• Updated: 21/Oct/15 10:37
• Resolved: 21/Oct/15 10:37

Description

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.