27 lines
636 B
Kotlin
27 lines
636 B
Kotlin
package awais.instagrabber.utils
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/**
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* Used as a wrapper for data that is exposed via a LiveData that represents an event.
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*/
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open class Event<out T>(private val content: T) {
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var hasBeenHandled = false
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private set // Allow external read but not write
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/**
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* Returns the content and prevents its use again.
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*/
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fun getContentIfNotHandled(): T? {
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return if (hasBeenHandled) {
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null
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} else {
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hasBeenHandled = true
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content
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}
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}
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/**
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* Returns the content, even if it's already been handled.
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*/
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fun peekContent(): T = content
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} |