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January 25, 2018 05:09
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Activity subscription to a ViewModel SnackData PublishSubject
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fun bindViewModel(root:View, viewModel: BaseViewModel) { | |
viewModel.snackPub.subscribe { snackData -> | |
showSnackbar(rootView, snackData) | |
} | |
} | |
/** | |
* Maps the passed [SnackData] to the appropriate UI representation of a [Snackbar] | |
*/ | |
private fun showSnackbar(root: View, data: SnackData) { | |
fun configureSnackBar(newSnackbar: Snackbar, dissmissCallback:SnackFinishedListener, @StringRes actionMsgId:Int, actionCallback:SnackActionListener) { | |
snackbar = newSnackbar | |
snackbarDismissCallback = dissmissCallback | |
if (actionMsgId > 0) { | |
newSnackbar.setAction(actionMsgId, { actionCallback()}) | |
} | |
} | |
// handle each of the SnackData states | |
when (data) { | |
NoSnack -> snackbar?.dismiss() | |
is ShortSnack -> with(Snackbar.make(root, data.msgId, Snackbar.LENGTH_SHORT)) { | |
configureSnackBar(this, data.dismissListener, data.actionMsgId, data.actionListener) | |
} | |
is LongSnack -> with(Snackbar.make(root, data.msgId, Snackbar.LENGTH_LONG)) { | |
configureSnackBar(this, data.dismissListener, data.actionMsgId, data.actionListener) | |
} | |
is StickySnack -> with(Snackbar.make(root, data.msgId, Snackbar.LENGTH_INDEFINITE)) { | |
configureSnackBar(this, data.dismissListener, data.actionMsgId, data.actionListener) | |
} | |
} | |
// setup a dismiss listener in case any listener needs to take action once the | |
// message is displayed | |
// | |
snackbar?.addCallback(object: BaseTransientBottomBar.BaseCallback<Snackbar>() { | |
override fun onDismissed(transientBottomBar: Snackbar?, event: Int) { | |
super.onDismissed(transientBottomBar, event) | |
snackbarDismissCallback?.invoke() | |
snackbar = null | |
snackbarDismissCallback = null | |
} | |
}) | |
snackbar?.show() | |
} |
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