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package ca.allanwang.kau.kpref.items
import android.support.annotation.CallSuper
import android.support.annotation.StringRes
import android.view.View
import ca.allanwang.kau.R
import ca.allanwang.kau.kpref.KPrefAdapterBuilder
import ca.allanwang.kau.kpref.KPrefException
import ca.allanwang.kau.utils.resolveDrawable
import ca.allanwang.kau.utils.string
/**
* Created by Allan Wang on 2017-06-05.
*
* Base class for pref setters that include the Shared Preference hooks
*/
abstract class KPrefItemBase<T>(builder: KPrefAdapterBuilder,
@StringRes title: Int,
coreBuilder: KPrefItemCore.Builder.() -> Unit = {},
itemBuilder: Builder<T>.() -> Unit = {}) : KPrefItemCore(builder, title, coreBuilder) {
var pref: T
get() = itemBase.getter!!.invoke()
set(value) {
itemBase.setter!!.invoke(value)
}
var enabled: Boolean = true
val itemBase: Builder<T>
init {
itemBase = Builder<T>()
itemBase.itemBuilder()
if (itemBase.onClick == null) itemBase.onClick = {
itemView, innerContent ->
defaultOnClick(itemView, innerContent)
}
}
abstract fun defaultOnClick(itemView: View, innerContent: View?): Boolean
@CallSuper
override fun onPostBindView(viewHolder: ViewHolder, textColor: Int?, accentColor: Int?) {
val c = viewHolder.itemView.context
if (itemBase.getter == null) throw KPrefException("getter not set for ${c.string(title)}")
if (itemBase.setter == null) throw KPrefException("setter not set for ${c.string(title)}")
enabled = itemBase.enabler.invoke()
with(viewHolder) {
if (!enabled) container?.background = null
container?.alpha = if (enabled) 1.0f else 0.3f
}
}
override final fun onClick(itemView: View, innerContent: View?): Boolean {
return if (enabled) itemBase.onClick?.invoke(itemView, innerContent) ?: false
else itemBase.onDisabledClick?.invoke(itemView, innerContent) ?: false
}
override fun unbindView(holder: ViewHolder) {
super.unbindView(holder)
with(holder) {
container?.isEnabled = true
container?.background = itemView.context.resolveDrawable(android.R.attr.selectableItemBackground)
container?.alpha = 1.0f
}
}
override final fun getLayoutRes(): Int = R.layout.kau_preference
open class Builder<T> {
var enabler: () -> Boolean = { true }
var onClick: ((itemView: View, innerContent: View?) -> Boolean)? = null
var onDisabledClick: ((itemView: View, innerContent: View?) -> Boolean)? = null
var getter: (() -> T)? = null
var setter: ((value: T) -> Unit)? = null
}
}
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