NumberTextBox: Type "-" and move focus out, the widget is not marked as invalid in some cases

[jdtang]

When "places" attribute in "constraints" is set, if typing "-" in NumberTextBox? widget and then moving focus out, the widget is marked as invalid - this is good.

However, when "places" attribute in "constraints" is not set, if typing "-" in NumberTextBox? widget and then moving focus out, the widget is not market as invalid - this is a bug.

This problem can be re-created on http://dojotoolkit.org/reference-guide/1.10/dijit/form/NumberTextBox.html. See attached screenshots.

There is a related bug (​https://bugs.dojotoolkit.org/ticket/17382), but the problem I want to report here is different as the one reported in that bug. For that bug, I would consider the behavior is expected (or by design). When the focus is still in the widget, we should not mark the widget as invalid if the text is "-", as user may type number after "-", which will make the input valid. But when the widget loses focus, the widget needs to be marked as invalid if the input is "-", as "-" is not a valid number - this is the problem I want report in this bug.

Attached is a quick fix that we applied. The ideal fix would be fixing the regular expression when "places" attribute in "constraints" is not set.

[jdtang]

Our_quick_fix

[dylan]

Ticket planning... move current 1.13 tickets out to 1.15 to make it easier to move tickets into the 1.13 milestone.