Magisk/app/src/main/java/com/topjohnwu/magisk/utils/TransitiveText.kt

54 lines
1.3 KiB
Kotlin

package com.topjohnwu.magisk.utils
import android.content.res.Resources
import android.widget.TextView
import androidx.databinding.BindingAdapter
import androidx.databinding.InverseBindingAdapter
sealed class TransitiveText {
abstract val isEmpty: Boolean
abstract fun getText(resources: Resources): CharSequence
// ---
class String(
private val value: CharSequence
) : TransitiveText() {
override val isEmpty = value.isEmpty()
override fun getText(resources: Resources) = value
}
class Res(
private val value: Int,
private vararg val params: Any
) : TransitiveText() {
override val isEmpty = value == 0
override fun getText(resources: Resources) =
resources.getString(value, *params)
}
// ---
companion object {
val EMPTY = String("")
}
}
fun Int.asTransitive(vararg params: Any): TransitiveText = TransitiveText.Res(this, *params)
fun CharSequence.asTransitive(): TransitiveText = TransitiveText.String(this)
@BindingAdapter("android:text")
fun TextView.setText(text: TransitiveText) {
this.text = text.getText(context.resources)
}
@InverseBindingAdapter(attribute = "android:text", event = "android:textAttrChanged")
fun TextView.getTransitiveText() = text.asTransitive()