Student projects/Automatic accessibility checking/Core

UML

Current UML Image

Abstract flow:

• Send Request - Ajax call showValidate()
  • Get Source - PHP function validate_page()
    • Die (If unable to grab source)
  • Submit Source - PHP function validate_cache()
    • Die (If unable to communicate with the validation server)
  • Retrieve Errors - PHP function validate_request()
    • Die (If unable to read errors)
  • Display Errors - PHP function validate_request()

Code Outline

functions.validate.php

• Function validate_curl ($request)
  • Variable $request is populated by Function validate_cache.
    • Returns an open CURL connection.

• Function validate_cache ($url)
  • Variable $url is populated by Function validate_request.
    • Returns the cached result from W3

• Function validate_page ($uri)
  • Variable $uri is populated by Function validate_request.
    • Returns the html source of the current page.

• Function validate_request ($page_uri)
  • Variable $page_uri is populated by the Ajax call.
    • Prints the error report directly to the error tracker.

• Function the_warnings ($page_uri, $display = null)
  • Variable $page_uri is populated by the Ajax call. Variable $display is set to 1.
    • Prints the number of warnings to the error tracker.

• Function the_errors ($page_uri, $display = null)
  • Variable $page_uri is populated by the Ajax call. Variable $display is set to 1.
    • Prints the number of errors to the error tracker.

ajax_php_validate.js

• Function GetXmlHttpObject ()
  • no parameters
    • Creates an Ajax connection.

• Function showValidate (str)
  • Variable str is populated by the ajax call.
    • Creates the ajax call to the proxy. Calls stateChanged when it is ready.

• Function stateChanged ()
  • no parameters
    • Prints the report to the error tracker.