CSC/ECE 517 Fall 2016/ M1653 Implement HTML form validation

Project description

Initial steps

• compile Servo and ensure that it runs on tests/html/about-mozilla.html
• email the mozilla.dev.servo mailing list (be sure to subscribe first!) introducing your group and asking any necessary questions
• uncomment the attributes in ValidityState.webidl and fix the resulting build errors by implementing appropriate stub methods in validitystate.rs
• make the ValidityState constructor take an &Element argument and store it as a JS<Element> member in ValidityState
• add a new enum that represents each possible validity check in ValidityState
• define a Validatable trait that contains a method which accepts this enum as an argument (see the Activatable trait for inspiration)
• implement this trait for the form element types (HTMLInputElement, HTMLSelectElement, HTMLButtonElement, etc.), and define an as_maybe_validatable *method on Element which returns an &Validatable value if the element implements the trait (see as_maybe_activatable for inspiration)
• Use the newly-added JS<Element> member to call these new methods as appropriate in each of the stub methods in ValidityState

Subsequent steps

• a method to HTMLFormElement that implements the steps to interactively validate the constraints of a form element
• Implement the checkValidity API for HTMLFormElement
• Implement the reportValidity API for HTMLFormElement
• Implement each validity state defined in the spec as applicable. This can include implementing support for attributes such as min, max, minlength, etc.
• Modify the implementation of the form submission algorithm to include constraint validation