dojox/mobile/Heading: when href is specified, the back button wrongly uses browser's history instead of opening the file specified by href

[Adrian Vasiliu]

When href is specified for a dojox/mobile/Heading, the back button wrongly does history.back() thus ignoring the href property.

How to reproduce (all desktop and mobile browsers) :

1. Open a new browser window (to get an empty browser history).

2. Load for instance ​http://download.dojotoolkit.org/release-1.9.0b2/dojo-release-1.9.0b2/dojox/mobile/tests/test_transition-animations-extended1.html. This contains a Heading defined as follows:

   <h1 data-dojo-type="dojox.mobile.Heading" 
     data-dojo-props='back:"Top", href:"test_transition-animations.html" ... />
   

3. Click/touch the back button.

=> the browser navigates to an blank page instead of opening the HTML file specified in href.

This is a regression since 1.8.0. (In 1.7.4 the bug is not present; testable using ​http://download.dojotoolkit.org/release-1.7.4/dojo-release-1.7.4/dojox/mobile/tests/test_transition-animations-extended1.html which does not exhibit this issue, while it is reproducible with ​http://download.dojotoolkit.org/release-1.8.0/dojo-release-1.8.0/dojox/mobile/tests/test_transition-animations-extended1.html).

[Adrian Vasiliu]

Heading with href specified now correctly sets the "back" property of the back button, such that browser's history is no longer wrongly used. Includes DOH test case. - Adrian Vasiliu (IBM, CCLA)

[Adrian Vasiliu]

In [31202]:

fixes #16991. Heading with href specified now correctly sets the "back" property of the back button, such that browser's history is no longer wrongly used. Includes DOH test case.