Default buttons for forms
-------------------------

                 Key: TAPESTRY-1807
                 URL: https://issues.apache.org/jira/browse/TAPESTRY-1807
             Project: Tapestry
          Issue Type: New Feature
          Components: Core Components, Framework
    Affects Versions: 4.1.3
            Reporter: Andreas Andreou
             Fix For: 4.1.4


This is to simplify handling of the ENTER key and will allow specifying which 
button
should get 'clicked' - it can even apply to form sub-regions.

Implementation details:
<div onkeydown="return fireDefaultButton(event, 'derfaultButtonId')">...</div>

function fireDefaultButton(event, target) {
if (event.keyCode == 13 && !(event.srcElement && 
(event.srcElement.tagName.toLowerCase() == "textarea"))) {
// handle button click
  }
}

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