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Support binding from custom classes #74

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Support binding from custom classes #74

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100 changes: 50 additions & 50 deletions src/main/kotlin/kotterknife/ButterKnife.kt
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Original file line number Diff line number Diff line change
Expand Up @@ -12,117 +12,117 @@ import android.support.v4.app.DialogFragment as SupportDialogFragment
import android.support.v4.app.Fragment as SupportFragment

public fun <V : View> View.bindView(id: Int)
: ReadOnlyProperty<View, V> = required(id, viewFinder)
: ReadOnlyProperty<Any?, V> = required(id, viewFinder)
public fun <V : View> Activity.bindView(id: Int)
: ReadOnlyProperty<Activity, V> = required(id, viewFinder)
: ReadOnlyProperty<Any?, V> = required(id, viewFinder)
public fun <V : View> Dialog.bindView(id: Int)
: ReadOnlyProperty<Dialog, V> = required(id, viewFinder)
: ReadOnlyProperty<Any?, V> = required(id, viewFinder)
public fun <V : View> DialogFragment.bindView(id: Int)
: ReadOnlyProperty<DialogFragment, V> = required(id, viewFinder)
: ReadOnlyProperty<Any?, V> = required(id, viewFinder)
public fun <V : View> SupportDialogFragment.bindView(id: Int)
: ReadOnlyProperty<SupportDialogFragment, V> = required(id, viewFinder)
: ReadOnlyProperty<Any?, V> = required(id, viewFinder)
public fun <V : View> Fragment.bindView(id: Int)
: ReadOnlyProperty<Fragment, V> = required(id, viewFinder)
: ReadOnlyProperty<Any?, V> = required(id, viewFinder)
public fun <V : View> SupportFragment.bindView(id: Int)
: ReadOnlyProperty<SupportFragment, V> = required(id, viewFinder)
: ReadOnlyProperty<Any?, V> = required(id, viewFinder)
public fun <V : View> ViewHolder.bindView(id: Int)
: ReadOnlyProperty<ViewHolder, V> = required(id, viewFinder)
: ReadOnlyProperty<Any?, V> = required(id, viewFinder)

public fun <V : View> View.bindOptionalView(id: Int)
: ReadOnlyProperty<View, V?> = optional(id, viewFinder)
: ReadOnlyProperty<Any?, V?> = optional(id, viewFinder)
public fun <V : View> Activity.bindOptionalView(id: Int)
: ReadOnlyProperty<Activity, V?> = optional(id, viewFinder)
: ReadOnlyProperty<Any?, V?> = optional(id, viewFinder)
public fun <V : View> Dialog.bindOptionalView(id: Int)
: ReadOnlyProperty<Dialog, V?> = optional(id, viewFinder)
: ReadOnlyProperty<Any?, V?> = optional(id, viewFinder)
public fun <V : View> DialogFragment.bindOptionalView(id: Int)
: ReadOnlyProperty<DialogFragment, V?> = optional(id, viewFinder)
: ReadOnlyProperty<Any?, V?> = optional(id, viewFinder)
public fun <V : View> SupportDialogFragment.bindOptionalView(id: Int)
: ReadOnlyProperty<SupportDialogFragment, V?> = optional(id, viewFinder)
: ReadOnlyProperty<Any?, V?> = optional(id, viewFinder)
public fun <V : View> Fragment.bindOptionalView(id: Int)
: ReadOnlyProperty<Fragment, V?> = optional(id, viewFinder)
: ReadOnlyProperty<Any?, V?> = optional(id, viewFinder)
public fun <V : View> SupportFragment.bindOptionalView(id: Int)
: ReadOnlyProperty<SupportFragment, V?> = optional(id, viewFinder)
: ReadOnlyProperty<Any?, V?> = optional(id, viewFinder)
public fun <V : View> ViewHolder.bindOptionalView(id: Int)
: ReadOnlyProperty<ViewHolder, V?> = optional(id, viewFinder)
: ReadOnlyProperty<Any?, V?> = optional(id, viewFinder)

public fun <V : View> View.bindViews(vararg ids: Int)
: ReadOnlyProperty<View, List<V>> = required(ids, viewFinder)
: ReadOnlyProperty<Any?, List<V>> = required(ids, viewFinder)
public fun <V : View> Activity.bindViews(vararg ids: Int)
: ReadOnlyProperty<Activity, List<V>> = required(ids, viewFinder)
: ReadOnlyProperty<Any?, List<V>> = required(ids, viewFinder)
public fun <V : View> Dialog.bindViews(vararg ids: Int)
: ReadOnlyProperty<Dialog, List<V>> = required(ids, viewFinder)
: ReadOnlyProperty<Any?, List<V>> = required(ids, viewFinder)
public fun <V : View> DialogFragment.bindViews(vararg ids: Int)
: ReadOnlyProperty<DialogFragment, List<V>> = required(ids, viewFinder)
: ReadOnlyProperty<Any?, List<V>> = required(ids, viewFinder)
public fun <V : View> SupportDialogFragment.bindViews(vararg ids: Int)
: ReadOnlyProperty<SupportDialogFragment, List<V>> = required(ids, viewFinder)
: ReadOnlyProperty<Any?, List<V>> = required(ids, viewFinder)
public fun <V : View> Fragment.bindViews(vararg ids: Int)
: ReadOnlyProperty<Fragment, List<V>> = required(ids, viewFinder)
: ReadOnlyProperty<Any?, List<V>> = required(ids, viewFinder)
public fun <V : View> SupportFragment.bindViews(vararg ids: Int)
: ReadOnlyProperty<SupportFragment, List<V>> = required(ids, viewFinder)
: ReadOnlyProperty<Any?, List<V>> = required(ids, viewFinder)
public fun <V : View> ViewHolder.bindViews(vararg ids: Int)
: ReadOnlyProperty<ViewHolder, List<V>> = required(ids, viewFinder)
: ReadOnlyProperty<Any?, List<V>> = required(ids, viewFinder)

public fun <V : View> View.bindOptionalViews(vararg ids: Int)
: ReadOnlyProperty<View, List<V>> = optional(ids, viewFinder)
: ReadOnlyProperty<Any?, List<V>> = optional(ids, viewFinder)
public fun <V : View> Activity.bindOptionalViews(vararg ids: Int)
: ReadOnlyProperty<Activity, List<V>> = optional(ids, viewFinder)
: ReadOnlyProperty<Any?, List<V>> = optional(ids, viewFinder)
public fun <V : View> Dialog.bindOptionalViews(vararg ids: Int)
: ReadOnlyProperty<Dialog, List<V>> = optional(ids, viewFinder)
: ReadOnlyProperty<Any?, List<V>> = optional(ids, viewFinder)
public fun <V : View> DialogFragment.bindOptionalViews(vararg ids: Int)
: ReadOnlyProperty<DialogFragment, List<V>> = optional(ids, viewFinder)
: ReadOnlyProperty<Any?, List<V>> = optional(ids, viewFinder)
public fun <V : View> SupportDialogFragment.bindOptionalViews(vararg ids: Int)
: ReadOnlyProperty<SupportDialogFragment, List<V>> = optional(ids, viewFinder)
: ReadOnlyProperty<Any?, List<V>> = optional(ids, viewFinder)
public fun <V : View> Fragment.bindOptionalViews(vararg ids: Int)
: ReadOnlyProperty<Fragment, List<V>> = optional(ids, viewFinder)
: ReadOnlyProperty<Any?, List<V>> = optional(ids, viewFinder)
public fun <V : View> SupportFragment.bindOptionalViews(vararg ids: Int)
: ReadOnlyProperty<SupportFragment, List<V>> = optional(ids, viewFinder)
: ReadOnlyProperty<Any?, List<V>> = optional(ids, viewFinder)
public fun <V : View> ViewHolder.bindOptionalViews(vararg ids: Int)
: ReadOnlyProperty<ViewHolder, List<V>> = optional(ids, viewFinder)
: ReadOnlyProperty<Any?, List<V>> = optional(ids, viewFinder)

private val View.viewFinder: View.(Int) -> View?
private val View.viewFinder: (Int) -> View?
get() = { findViewById(it) }
private val Activity.viewFinder: Activity.(Int) -> View?
private val Activity.viewFinder: (Int) -> View?
get() = { findViewById(it) }
private val Dialog.viewFinder: Dialog.(Int) -> View?
private val Dialog.viewFinder: (Int) -> View?
get() = { findViewById(it) }
private val DialogFragment.viewFinder: DialogFragment.(Int) -> View?
private val DialogFragment.viewFinder: (Int) -> View?
get() = { dialog?.findViewById(it) ?: view?.findViewById(it) }
private val SupportDialogFragment.viewFinder: SupportDialogFragment.(Int) -> View?
private val SupportDialogFragment.viewFinder: (Int) -> View?
get() = { dialog?.findViewById(it) ?: view?.findViewById(it) }
private val Fragment.viewFinder: Fragment.(Int) -> View?
private val Fragment.viewFinder: (Int) -> View?
get() = { view.findViewById(it) }
private val SupportFragment.viewFinder: SupportFragment.(Int) -> View?
private val SupportFragment.viewFinder: (Int) -> View?
get() = { view!!.findViewById(it) }
private val ViewHolder.viewFinder: ViewHolder.(Int) -> View?
private val ViewHolder.viewFinder: (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? ?: viewNotFound(id, desc) }
private fun <T, V : View> required(id: Int, finder: (Int) -> View?)
= Lazy<T, V> { desc -> finder(id) as V? ?: viewNotFound(id, desc) }

@Suppress("UNCHECKED_CAST")
private fun <T, V : View> optional(id: Int, finder: T.(Int) -> View?)
= Lazy { t: T, desc -> t.finder(id) as V? }
private fun <T, V : View> optional(id: Int, finder: (Int) -> View?)
= Lazy<T, V?> { 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) } }
private fun <T, V : View> required(ids: IntArray, finder: (Int) -> View?)
= Lazy<T, List<V>> { desc -> ids.map { 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, desc -> ids.map { t.finder(it) as V? }.filterNotNull() }
private fun <T, V : View> optional(ids: IntArray, finder: (Int) -> View?)
= Lazy<T, List<V>> { ids.map { 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 class Lazy<T, V>(private val initializer: (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)
value = initializer(property)
}
@Suppress("UNCHECKED_CAST")
return value as V
Expand Down