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package ca.allanwang.kau.utils
/**
* Created by Allan Wang on 2017-05-29.
*
* Courtesy of Jake Wharton
*
* https://github.com/JakeWharton/kotterknife/blob/master/src/main/kotlin/kotterknife/ButterKnife.kt
*/
import android.app.Activity
import android.app.Dialog
import android.app.DialogFragment
import android.app.Fragment
import android.support.v7.widget.RecyclerView.ViewHolder
import android.view.View
import kotlin.properties.ReadOnlyProperty
import kotlin.reflect.KProperty
import android.support.v4.app.DialogFragment as SupportDialogFragment
import android.support.v4.app.Fragment as SupportFragment
fun <V : View> View.bindView(id: Int)
: ReadOnlyProperty<View, V> = required(id, viewFinder)
fun <V : View> Activity.bindView(id: Int)
: ReadOnlyProperty<Activity, V> = required(id, viewFinder)
fun <V : View> Dialog.bindView(id: Int)
: ReadOnlyProperty<Dialog, V> = required(id, viewFinder)
fun <V : View> DialogFragment.bindView(id: Int)
: ReadOnlyProperty<DialogFragment, V> = required(id, viewFinder)
fun <V : View> android.support.v4.app.DialogFragment.bindView(id: Int)
: ReadOnlyProperty<android.support.v4.app.DialogFragment, V> = required(id, viewFinder)
fun <V : View> Fragment.bindView(id: Int)
: ReadOnlyProperty<Fragment, V> = required(id, viewFinder)
fun <V : View> android.support.v4.app.Fragment.bindView(id: Int)
: ReadOnlyProperty<android.support.v4.app.Fragment, V> = required(id, viewFinder)
fun <V : View> ViewHolder.bindView(id: Int)
: ReadOnlyProperty<ViewHolder, V> = required(id, viewFinder)
fun <V : View> View.bindOptionalView(id: Int)
: ReadOnlyProperty<View, V?> = optional(id, viewFinder)
fun <V : View> Activity.bindOptionalView(id: Int)
: ReadOnlyProperty<Activity, V?> = optional(id, viewFinder)
fun <V : View> Dialog.bindOptionalView(id: Int)
: ReadOnlyProperty<Dialog, V?> = optional(id, viewFinder)
fun <V : View> DialogFragment.bindOptionalView(id: Int)
: ReadOnlyProperty<DialogFragment, V?> = optional(id, viewFinder)
fun <V : View> android.support.v4.app.DialogFragment.bindOptionalView(id: Int)
: ReadOnlyProperty<android.support.v4.app.DialogFragment, V?> = optional(id, viewFinder)
fun <V : View> Fragment.bindOptionalView(id: Int)
: ReadOnlyProperty<Fragment, V?> = optional(id, viewFinder)
fun <V : View> android.support.v4.app.Fragment.bindOptionalView(id: Int)
: ReadOnlyProperty<android.support.v4.app.Fragment, V?> = optional(id, viewFinder)
fun <V : View> ViewHolder.bindOptionalView(id: Int)
: ReadOnlyProperty<ViewHolder, V?> = optional(id, viewFinder)
fun <V : View> View.bindViews(vararg ids: Int)
: ReadOnlyProperty<View, List<V>> = required(ids, viewFinder)
fun <V : View> Activity.bindViews(vararg ids: Int)
: ReadOnlyProperty<Activity, List<V>> = required(ids, viewFinder)
fun <V : View> Dialog.bindViews(vararg ids: Int)
: ReadOnlyProperty<Dialog, List<V>> = required(ids, viewFinder)
fun <V : View> DialogFragment.bindViews(vararg ids: Int)
: ReadOnlyProperty<DialogFragment, List<V>> = required(ids, viewFinder)
fun <V : View> android.support.v4.app.DialogFragment.bindViews(vararg ids: Int)
: ReadOnlyProperty<android.support.v4.app.DialogFragment, List<V>> = required(ids, viewFinder)
fun <V : View> Fragment.bindViews(vararg ids: Int)
: ReadOnlyProperty<Fragment, List<V>> = required(ids, viewFinder)
fun <V : View> android.support.v4.app.Fragment.bindViews(vararg ids: Int)
: ReadOnlyProperty<android.support.v4.app.Fragment, List<V>> = required(ids, viewFinder)
fun <V : View> ViewHolder.bindViews(vararg ids: Int)
: ReadOnlyProperty<ViewHolder, List<V>> = required(ids, viewFinder)
fun <V : View> View.bindOptionalViews(vararg ids: Int)
: ReadOnlyProperty<View, List<V>> = optional(ids, viewFinder)
fun <V : View> Activity.bindOptionalViews(vararg ids: Int)
: ReadOnlyProperty<Activity, List<V>> = optional(ids, viewFinder)
fun <V : View> Dialog.bindOptionalViews(vararg ids: Int)
: ReadOnlyProperty<Dialog, List<V>> = optional(ids, viewFinder)
fun <V : View> DialogFragment.bindOptionalViews(vararg ids: Int)
: ReadOnlyProperty<DialogFragment, List<V>> = optional(ids, viewFinder)
fun <V : View> android.support.v4.app.DialogFragment.bindOptionalViews(vararg ids: Int)
: ReadOnlyProperty<android.support.v4.app.DialogFragment, List<V>> = optional(ids, viewFinder)
fun <V : View> Fragment.bindOptionalViews(vararg ids: Int)
: ReadOnlyProperty<Fragment, List<V>> = optional(ids, viewFinder)
fun <V : View> android.support.v4.app.Fragment.bindOptionalViews(vararg ids: Int)
: ReadOnlyProperty<android.support.v4.app.Fragment, List<V>> = optional(ids, viewFinder)
fun <V : View> ViewHolder.bindOptionalViews(vararg ids: Int)
: ReadOnlyProperty<ViewHolder, List<V>> = optional(ids, viewFinder)
private inline val View.viewFinder: View.(Int) -> View?
get() = { findViewById(it) }
private inline val Activity.viewFinder: Activity.(Int) -> View?
get() = { findViewById(it) }
private inline val Dialog.viewFinder: Dialog.(Int) -> View?
get() = { findViewById(it) }
private inline val DialogFragment.viewFinder: DialogFragment.(Int) -> View?
get() = { dialog.findViewById(it) }
private inline val android.support.v4.app.DialogFragment.viewFinder: android.support.v4.app.DialogFragment.(Int) -> View?
get() = { dialog.findViewById(it) }
private inline val Fragment.viewFinder: Fragment.(Int) -> View?
get() = { view.findViewById(it) }
private inline val android.support.v4.app.Fragment.viewFinder: android.support.v4.app.Fragment.(Int) -> View?
get() = { view!!.findViewById(it) }
private inline val ViewHolder.viewFinder: ViewHolder.(Int) -> View?
get() = { itemView.findViewById(it) }
private fun viewNotFound(id: Int, desc: KProperty<*>): Nothing =
throw IllegalStateException("View ID $id for '${desc.name}' not found.")
@Suppress("UNCHECKED_CAST")
private fun <T, V : View> required(id: Int, finder: T.(Int) -> View?)
= Lazy { t: T, desc -> (t.finder(id) as V?)?.apply { } ?: viewNotFound(id, desc) }
@Suppress("UNCHECKED_CAST")
private fun <T, V : View> optional(id: Int, finder: T.(Int) -> View?)
= Lazy { t: T, _ -> t.finder(id) as V? }
@Suppress("UNCHECKED_CAST")
private fun <T, V : View> required(ids: IntArray, finder: T.(Int) -> View?)
= Lazy { t: T, desc -> ids.map { t.finder(it) as V? ?: viewNotFound(it, desc) } }
@Suppress("UNCHECKED_CAST")
private fun <T, V : View> optional(ids: IntArray, finder: T.(Int) -> View?)
= Lazy { t: T, _ -> ids.map { t.finder(it) as V? }.filterNotNull() }
// Like Kotlin's lazy delegate but the initializer gets the target and metadata passed to it
private class Lazy<T, V>(private val initializer: (T, KProperty<*>) -> V) : ReadOnlyProperty<T, V> {
private object EMPTY
private var value: Any? = EMPTY
override fun getValue(thisRef: T, property: KProperty<*>): V {
if (value == EMPTY) {
value = initializer(thisRef, property)
}
@Suppress("UNCHECKED_CAST")
return value as V
}
}
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