I would like to have another locator strategy added, tentatively named "label". This would look for a label element with the given text, then return the element pointed to by the "for" attribute of that label element.

Rationale:

Django (and other frameworks?) create forms that look like this:

<label for="id_some_form_field">I accept the terms</label>
<input id='id_some_form_field' type='checkbox'>

I would like to interact with the form field by specifying the label rather than having to use some other locator. For example, to validate that this checkbox is checked I want to do something like this:

click element    label=I accept the terms
checkbox should be selected    label=I accept the terms

I think this would make it easier for people who didn't write the code be able to write tests, because they wouldn't have to know the underlying element IDs; instead, they can simply enter in what they see on the screen.

Further, I recommend we support the stripping of leading and trailing spaces and dots to allow for a simple type of pattern matching. Say, for example, you have a form field that has the label "I have read the terms of service and agree to be bound by them". It would be cumbersome to type all of that into a test case, so it would be nice to support something like this:

checkbox should be selected    label=I have read the terms of service...

I am willing to write the implementation. This issue is for generating discussion, and to see if this would be a generally useful locator strategy.