added data persistency for WebView (API19-)

app/src/main/java/fr/forum_thalie/tsumugi/ui/news/NewsFragment.kt

 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
-import android.view.WindowManager
 import android.webkit.WebView
 import androidx.fragment.app.Fragment
 import androidx.lifecycle.ViewModelProviders
         container: ViewGroup?,
         savedInstanceState: Bundle?
     ): View? {
-        var root = inflater.inflate(R.layout.fragment_news, container, false) as View
         if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.KITKAT)
         {
-            root = inflater.inflate(R.layout.fragment_news, container, false) as androidx.coordinatorlayout.widget.CoordinatorLayout
-            activity?.window?.setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_PAN)
-            val webView = WebView(context)
-
             newsViewModel =
-                ViewModelProviders.of(this).get(NewsViewModel::class.java)
+            ViewModelProviders.of(this).get(NewsViewModel::class.java)
 
             if (!newsViewModel.isWebViewLoaded)
             {
                 try {
-                    val webViewS = root.findViewById<WebView>(R.id.news_webview)
-                    val webViewChat = WebViewNews(webViewS as WebView)
-                    webViewChat.start()
+                    newsViewModel.root = inflater.inflate(R.layout.fragment_chat, container, false)
+                    newsViewModel.webView = newsViewModel.root.findViewById(R.id.news_webview)
+                    newsViewModel.webViewNews = WebViewNews(newsViewModel.webView as WebView)
+                    newsViewModel.webViewNews!!.start()
                 } catch (e: Exception) {
-                    root = inflater.inflate(R.layout.fragment_error_chat, container, false)
+                    newsViewModel.root = inflater.inflate(R.layout.fragment_error_chat, container, false)
                 }
 
                 newsViewModel.isWebViewLoaded = true
                 Log.d(tag, "webview already created!?")
             }
 
-            return root
+            return newsViewModel.root
         }
 
         newsViewModel =
                 ViewModelProviders.of(this).get(NewsViewModel::class.java)
 
-        root = inflater.inflate(R.layout.fragment_news, container, false) as androidx.swiperefreshlayout.widget.SwipeRefreshLayout
+        val root = inflater.inflate(R.layout.fragment_news, container, false) as androidx.swiperefreshlayout.widget.SwipeRefreshLayout
 
         viewManager = LinearLayoutManager(context)
         viewAdapter = NewsAdapter(newsViewModel.newsArray, context!!)

app/src/main/java/fr/forum_thalie/tsumugi/ui/news/NewsViewModel.kt

 
 import android.os.Build
 import android.util.Log
+import android.view.View
+import android.webkit.WebView
 import androidx.lifecycle.ViewModel
 import androidx.recyclerview.widget.RecyclerView
 import com.prof.rssparser.Parser
 import java.text.SimpleDateFormat
 import java.util.*
 import kotlin.collections.ArrayList
-import kotlin.math.max
 import kotlin.math.min
 
 
 class NewsViewModel : ViewModel() {
 
+    lateinit var root: View
+    var webView: WebView? = null
+    var webViewNews: WebViewNews? = null
+
     val newsArray : ArrayList<News> = ArrayList()
     var isWebViewLoaded = false
 

app/src/main/java/fr/forum_thalie/tsumugi/ui/news/WebViewNews.kt

         webSetting.javaScriptEnabled = true
         webSetting.setSupportZoom(true)
 
-        /* TODO: in the future, it could be nice to have a parameters screen where you can:
-     - Set the text zoom
-     - Set your username (to not type it every time, would it be possible?)
-     - Hide the chat?
-     - do more? */
-        webSetting.textZoom = 90
+        webSetting.textZoom = 100
 
         webSetting.setSupportMultipleWindows(true)
         // needs to open target="_blank" links as KiwiIRC links have this attribute.