[added] Introduce onAfterClose callback prop

[fernandofleury]

Fixes #708 .

Since the onRequestClose won't be executed when isOpen changes outside of the controller scope, I think it's reasonable to give a single handler to general closing.

This would allow for some more centralised solutions like:

const modalProps = {
  onAfterOpen: disableBodyScroll,
  onAfterClose: enableBodyScroll,
}

whereas today you have to do:

const modalProps = {
  onAfterOpen: disableBodyScroll,
  onRequestClose:  enableBodyScroll
}

closeModal () {
  this.setState({ isOpen: false })
  enableBodyScroll();
}

Changes proposed:

• Introduce onAfterClose callback prop

Upgrade Path (for changed or removed APIs):

Acceptance Checklist:

• The commit message follows the guidelines in CONTRIBUTING.md.
• Documentation (README.md) and examples have been updated as needed.
• If this is a code change, a spec testing the functionality has been added.
• If the commit message has [changed] or [removed], there is an upgrade path above.

[coveralls]

Coverage increased (+0.06%) to 86.621% when pulling 9eb12e0 on fernandofleury:master into d4a8a32 on reactjs:master.

[diasbruno]

Hi @fernandofleury. Thanks for implementing this. Good job!

[fernandofleury]

@diasbruno I've updated as you requested

[diasbruno]

Released version 3.8.1.

[chris-pearce]

Is there any reason why this isn't anywhere in the docs?

http://reactcommunity.org/react-modal/?q=#installation