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package com.pitchedapps.frost.web
import android.graphics.Bitmap
import android.graphics.Color
import android.webkit.WebResourceRequest
import android.webkit.WebResourceResponse
import android.webkit.WebView
import android.webkit.WebViewClient
import com.pitchedapps.frost.facebook.FB_URL_BASE
import com.pitchedapps.frost.facebook.FbItem
import com.pitchedapps.frost.injectors.*
import com.pitchedapps.frost.utils.*
import com.pitchedapps.frost.utils.iab.IS_FROST_PRO
import com.pitchedapps.frost.views.FrostWebView
import io.reactivex.subjects.Subject
import org.jetbrains.anko.withAlpha
/**
* Created by Allan Wang on 2017-05-31.
*
* Collection of webview clients
*/
/**
* The base of all webview clients
* Used to ensure that resources are properly intercepted
*/
open class BaseWebViewClient : WebViewClient() {
override fun shouldInterceptRequest(view: WebView, request: WebResourceRequest): WebResourceResponse?
= view.shouldFrostInterceptRequest(request)
}
/**
* The default webview client
*/
open class FrostWebViewClient(val web: FrostWebView) : BaseWebViewClient() {
private val refresh: Subject<Boolean> = web.parent.refreshObservable
private val isMain = web.parent.baseEnum != null
protected inline fun v(crossinline message: () -> Any?) = L.v { "web client: ${message()}" }
override fun onPageStarted(view: WebView, url: String?, favicon: Bitmap?) {
super.onPageStarted(view, url, favicon)
if (url == null) return
v { "loading $url" }
refresh.onNext(true)
}
private fun injectBackgroundColor() {
web.setBackgroundColor(
when {
isMain -> Color.TRANSPARENT
web.url.isFacebookUrl -> Prefs.bgColor.withAlpha(255)
else -> Color.WHITE
}
)
}
override fun onPageCommitVisible(view: WebView, url: String?) {
super.onPageCommitVisible(view, url)
injectBackgroundColor()
if (url.isFacebookUrl)
view.jsInject(
CssAssets.ROUND_ICONS.maybe(Prefs.showRoundedIcons),
CssHider.HEADER,
CssHider.CORE,
CssHider.COMPOSER.maybe(!Prefs.showComposer),
CssHider.PEOPLE_YOU_MAY_KNOW.maybe(!Prefs.showSuggestedFriends && IS_FROST_PRO),
CssHider.SUGGESTED_GROUPS.maybe(!Prefs.showSuggestedGroups && IS_FROST_PRO),
Prefs.themeInjector,
CssHider.NON_RECENT.maybe((web.url?.contains("?sk=h_chr") ?: false)
&& Prefs.aggressiveRecents),
JsAssets.DOCUMENT_WATCHER)
else
refresh.onNext(false)
}
override fun onPageFinished(view: WebView, url: String?) {
url ?: return
v { "finished $url" }
if (!url.isFacebookUrl) {
refresh.onNext(false)
return
}
onPageFinishedActions(url)
}
open internal fun onPageFinishedActions(url: String) {
if (url.startsWith("${FbItem.MESSAGES.url}/read/") && Prefs.messageScrollToBottom)
web.pageDown(true)
injectAndFinish()
}
internal fun injectAndFinish() {
v { "page finished reveal" }
refresh.onNext(false)
injectBackgroundColor()
web.jsInject(
JsActions.LOGIN_CHECK,
JsAssets.CLICK_A,
JsAssets.TEXTAREA_LISTENER,
CssHider.ADS.maybe(!Prefs.showFacebookAds && IS_FROST_PRO),
JsAssets.CONTEXT_A,
JsAssets.MEDIA,
JsAssets.HEADER_BADGES.maybe(web.parent.baseEnum != null)
)
}
open fun handleHtml(html: String?) {
L.d { "Handle Html" }
}
open fun emit(flag: Int) {
L.d { "Emit $flag" }
}
/**
* Helper to format the request and launch it
* returns true to override the url
* returns false if we are already in an overlaying activity
*/
private fun launchRequest(request: WebResourceRequest): Boolean {
v { "Launching url: ${request.url}" }
return web.requestWebOverlay(request.url.toString())
}
private fun launchImage(url: String, text: String? = null): Boolean {
v { "Launching image: $url" }
web.context.launchImageActivity(url, text)
if (web.canGoBack()) web.goBack()
return true
}
override fun shouldOverrideUrlLoading(view: WebView, request: WebResourceRequest): Boolean {
v { "Url loading: ${request.url}" }
val path = request.url?.path ?: return super.shouldOverrideUrlLoading(view, request)
v { "Url path $path" }
val url = request.url.toString()
if (url.isExplicitIntent) {
view.context.resolveActivityForUri(request.url)
return true
}
if (path.startsWith("/composer/")) return launchRequest(request)
if (url.isImageUrl)
return launchImage(url)
if (Prefs.linksInDefaultApp && view.context.resolveActivityForUri(request.url)) return true
return super.shouldOverrideUrlLoading(view, request)
}
}
private const val EMIT_THEME = 0b1
private const val EMIT_ID = 0b10
private const val EMIT_COMPLETE = EMIT_THEME or EMIT_ID
private const val EMIT_FINISH = 0
/**
* Client variant for the menu view
*/
class FrostWebViewClientMenu(web: FrostWebView) : FrostWebViewClient(web) {
private val String.shouldInjectMenu
get() = when (removePrefix(FB_URL_BASE)) {
"settings",
"settings#",
"settings#!/settings?soft=bookmarks" -> true
else -> false
}
override fun onPageFinished(view: WebView, url: String?) {
super.onPageFinished(view, url)
if (url == null) return
if (url.shouldInjectMenu) jsInject(JsAssets.MENU)
}
override fun emit(flag: Int) {
super.emit(flag)
when (flag) {
EMIT_FINISH -> super.injectAndFinish()
}
}
override fun onPageFinishedActions(url: String) {
v { "Should inject ${url.shouldInjectMenu}" }
if (!url.shouldInjectMenu) injectAndFinish()
}
}
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