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package com.pitchedapps.frost.views
import android.animation.ValueAnimator
import android.annotation.SuppressLint
import android.content.Context
import android.graphics.Color
import android.util.AttributeSet
import android.view.View
import android.view.ViewGroup
import ca.allanwang.kau.utils.AnimHolder
import com.pitchedapps.frost.contracts.FrostContentContainer
import com.pitchedapps.frost.contracts.FrostContentCore
import com.pitchedapps.frost.contracts.FrostContentParent
import com.pitchedapps.frost.facebook.USER_AGENT_BASIC
import com.pitchedapps.frost.fragments.WebFragment
import com.pitchedapps.frost.utils.Prefs
import com.pitchedapps.frost.utils.frostDownload
import com.pitchedapps.frost.web.*
/**
* Created by Allan Wang on 2017-05-29.
*
*/
class FrostWebView @JvmOverloads constructor(
context: Context, attrs: AttributeSet? = null, defStyleAttr: Int = 0
) : NestedWebView(context, attrs, defStyleAttr),
FrostContentCore {
override fun reload(animate: Boolean) {
if (parent.registerTransition(false, animate))
super.reload()
}
override lateinit var parent: FrostContentParent
internal lateinit var frostWebClient: FrostWebViewClient
override val currentUrl: String
get() = url ?: ""
@SuppressLint("SetJavaScriptEnabled")
override fun bind(container: FrostContentContainer): View {
with(settings) {
javaScriptEnabled = true
if (parent.baseUrl.shouldUseBasicAgent)
userAgentString = USER_AGENT_BASIC
allowFileAccess = true
textZoom = Prefs.webTextScaling
}
setLayerType(LAYER_TYPE_HARDWARE, null)
// attempt to get custom client; otherwise fallback to original
frostWebClient = (container as? WebFragment)?.client(this) ?: FrostWebViewClient(this)
webViewClient = frostWebClient
webChromeClient = FrostChromeClient(this)
addJavascriptInterface(FrostJSI(this), "Frost")
setBackgroundColor(Color.TRANSPARENT)
setDownloadListener(context::frostDownload)
return this
}
/**
* Wrapper to the main userAgentString to cache it.
* This decouples it from the UiThread
*
* Note that this defaults to null, but the main purpose is to
* check if we've set our own agent.
*
* A null value may be interpreted as the default value
*/
var userAgentString: String? = null
set(value) {
field = value
settings.userAgentString = value
}
init {
isNestedScrollingEnabled = true
}
fun loadUrl(url: String?, animate: Boolean) {
if (url == null) return
if (parent.registerTransition(this.url != url, animate))
super.loadUrl(url)
}
override fun reloadBase(animate: Boolean) {
loadUrl(parent.baseUrl, animate)
}
override fun onBackPressed(): Boolean {
if (canGoBack()) {
goBack()
return true
}
return false
}
/**
* If webview is already at the top, refresh
* Otherwise scroll to top
*/
override fun onTabClicked() {
if (scrollY < 5) reloadBase(true)
else scrollToTop()
}
private fun scrollToTop() {
flingScroll(0, 0) // stop fling
if (scrollY > 10000)
scrollTo(0, 0)
else
smoothScrollTo(0)
}
private fun smoothScrollTo(y: Int) {
ValueAnimator.ofInt(scrollY, y).apply {
duration = Math.min(Math.abs(scrollY - y), 500).toLong()
interpolator = AnimHolder.fastOutSlowInInterpolator(context)
addUpdateListener { scrollY = it.animatedValue as Int }
start()
}
}
private fun smoothScrollBy(y: Int) = smoothScrollTo(Math.max(0, scrollY + y))
override var active: Boolean = true
set(value) {
if (field == value) return
field = value
if (field) onResume()
else onPause()
}
override fun reloadTheme() {
reloadThemeSelf()
}
override fun reloadThemeSelf() {
reload(false) // todo see if there's a better solution
}
override fun reloadTextSize() {
reloadTextSizeSelf()
}
override fun reloadTextSizeSelf() {
settings.textZoom = Prefs.webTextScaling
}
override fun destroy() {
val parent = getParent() as? ViewGroup
if (parent != null) {
parent.removeView(this)
super.destroy()
}
}
}
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