65 lines
2.8 KiB
Kotlin
65 lines
2.8 KiB
Kotlin
package be.mygod.vpnhotspot
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import android.app.Activity
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import android.content.DialogInterface
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import android.os.Bundle
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import android.os.Parcelable
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import androidx.appcompat.app.AlertDialog
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import androidx.appcompat.app.AppCompatDialogFragment
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import androidx.core.os.bundleOf
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import androidx.fragment.app.Fragment
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import androidx.fragment.app.setFragmentResult
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import androidx.fragment.app.setFragmentResultListener
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import com.google.android.material.dialog.MaterialAlertDialogBuilder
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import kotlinx.parcelize.Parcelize
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/**
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* Based on: https://android.googlesource.com/platform/packages/apps/ExactCalculator/+/8c43f06/src/com/android/calculator2/AlertDialogFragment.java
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*/
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abstract class AlertDialogFragment<Arg : Parcelable, Ret : Parcelable> :
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AppCompatDialogFragment(), DialogInterface.OnClickListener {
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companion object {
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private const val KEY_RESULT = "result"
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private const val KEY_ARG = "arg"
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private const val KEY_RET = "ret"
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private const val KEY_WHICH = "which"
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fun <Ret : Parcelable> setResultListener(fragment: Fragment, requestKey: String,
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listener: (Int, Ret?) -> Unit) {
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fragment.setFragmentResultListener(requestKey) { _, bundle ->
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listener(bundle.getInt(KEY_WHICH, Activity.RESULT_CANCELED), bundle.getParcelable(KEY_RET))
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}
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}
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inline fun <reified T : AlertDialogFragment<*, Ret>, Ret : Parcelable> setResultListener(
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fragment: Fragment, noinline listener: (Int, Ret?) -> Unit) =
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setResultListener(fragment, T::class.java.name, listener)
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}
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protected abstract fun AlertDialog.Builder.prepare(listener: DialogInterface.OnClickListener)
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private val resultKey get() = requireArguments().getString(KEY_RESULT)
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protected val arg by lazy { requireArguments().getParcelable<Arg>(KEY_ARG)!! }
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protected open val ret: Ret? get() = null
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private fun args() = arguments ?: Bundle().also { arguments = it }
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fun arg(arg: Arg) = args().putParcelable(KEY_ARG, arg)
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fun key(resultKey: String = javaClass.name) = args().putString(KEY_RESULT, resultKey)
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override fun onCreateDialog(savedInstanceState: Bundle?): AlertDialog =
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MaterialAlertDialogBuilder(requireContext()).also { it.prepare(this) }.create()
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override fun onClick(dialog: DialogInterface?, which: Int) {
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setFragmentResult(resultKey ?: return, Bundle().apply {
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putInt(KEY_WHICH, which)
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putParcelable(KEY_RET, ret ?: return@apply)
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})
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}
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override fun onDismiss(dialog: DialogInterface) {
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super.onDismiss(dialog)
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setFragmentResult(resultKey ?: return, bundleOf(KEY_WHICH to Activity.RESULT_CANCELED))
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}
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}
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@Parcelize
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class Empty : Parcelable
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