package ca.allanwang.kau.swipe

import android.app.Activity
import android.graphics.Color
import android.graphics.drawable.ColorDrawable
import android.view.ViewGroup

/**
 * Created by Mr.Jude on 2015/8/3.
 *
 * Updated by Allan Wang on 2017/07/05
 */
class SwipeBackPage(activity: Activity) : SwipeBackContract by SwipeBackLayout(activity) {

    var activity: Activity? = activity
    var slider: RelativeSlider

    /**
     * initializing is the equivalent to onCreate
     * since that is when the page is created
     */
    init {
        activity.window.setBackgroundDrawable(ColorDrawable(Color.TRANSPARENT))
        activity.window.decorView.setBackgroundColor(Color.TRANSPARENT)
        swipeBackLayout.layoutParams = ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT)
        slider = RelativeSlider(this)
    }

    fun onPostCreate() {
        handleLayout()
    }

    override var swipeEnabled: Boolean
        get() = swipeBackLayout.swipeEnabled
        set(value) {
            swipeBackLayout.swipeEnabled = value
            handleLayout()
        }

    private fun handleLayout() {
        if (swipeEnabled) swipeBackLayout.attachToActivity(activity!!)
        else swipeBackLayout.removeFromActivity(activity!!)
    }

    fun setClosePercent(percent: Float): SwipeBackPage {
        swipeBackLayout.scrollThreshold = percent
        return this
    }

}

interface SwipeBackContract {
    var swipeEnabled: Boolean
    var scrimColor: Int
    val swipeBackLayout: SwipeBackLayout
    var edgeSize: Int
    var edgeFlag: Int
    var scrollThreshold: Float
    var disallowIntercept: Boolean
    var minVelocity: Float
    var maxVelocity: Float
    var sensitivity:Float
    fun setEdgeSizePercent(swipeEdgePercent: Float)
    fun addListener(listener: SwipeListener)
    fun removeListener(listener: SwipeListener)
    fun scrollToFinishActivity()
}