Add option to open manga details in a WebView

app/src/main/java/eu/kanade/tachiyomi/ui/manga/info/MangaInfoController.kt

@@ -15,12 +15,7 @@ import android.support.customtabs.CustomTabsIntent
 import android.support.v4.content.pm.ShortcutInfoCompat
 import android.support.v4.content.pm.ShortcutManagerCompat
 import android.support.v4.graphics.drawable.IconCompat
-import android.view.LayoutInflater
-import android.view.Menu
-import android.view.MenuInflater
-import android.view.MenuItem
-import android.view.View
-import android.view.ViewGroup
+import android.view.*
 import android.widget.Toast
 import com.afollestad.materialdialogs.MaterialDialog
 import com.bumptech.glide.load.engine.DiskCacheStrategy
@@ -138,6 +133,7 @@ class MangaInfoController : NucleusController<MangaInfoPresenter>(),
     override fun onOptionsItemSelected(item: MenuItem): Boolean {
         when (item.itemId) {
             R.id.action_open_in_browser -> openInBrowser()
+            R.id.action_open_in_web_view -> openInWebView()
             R.id.action_share -> shareManga()
             R.id.action_add_to_home_screen -> addToHomeScreen()
             else -> return super.onOptionsItemSelected(item)
@@ -302,6 +298,19 @@ class MangaInfoController : NucleusController<MangaInfoPresenter>(),
         }
     }
 
+    private fun openInWebView() {
+        val source = presenter.source as? HttpSource ?: return
+
+        val url = try {
+            source.mangaDetailsRequest(presenter.manga).url().toString()
+        } catch (e: Exception) {
+            return
+        }
+
+        parentController?.router?.pushController(MangaWebViewController(source.id, url)
+            .withFadeTransaction())
+    }
+
     /**
      * Called to run Intent with [Intent.ACTION_SEND], which show share dialog.
      */

app/src/main/java/eu/kanade/tachiyomi/ui/manga/info/MangaWebViewController.kt

@@ -0,0 +1,51 @@
+package eu.kanade.tachiyomi.ui.manga.info
+
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.webkit.WebView
+import eu.kanade.tachiyomi.R
+import eu.kanade.tachiyomi.source.SourceManager
+import eu.kanade.tachiyomi.source.online.HttpSource
+import eu.kanade.tachiyomi.ui.base.controller.BaseController
+import uy.kohesive.injekt.injectLazy
+
+class MangaWebViewController(bundle: Bundle? = null) : BaseController(bundle) {
+
+    private val sourceManager by injectLazy<SourceManager>()
+
+    constructor(sourceId: Long, url: String) : this(Bundle().apply {
+        putLong(SOURCE_KEY, sourceId)
+        putString(URL_KEY, url)
+    })
+
+    override fun inflateView(inflater: LayoutInflater, container: ViewGroup): View {
+        return inflater.inflate(R.layout.manga_info_web_controller, container, false)
+    }
+
+    override fun onViewCreated(view: View) {
+        super.onViewCreated(view)
+        val source = sourceManager.get(args.getLong(SOURCE_KEY)) as? HttpSource ?: return
+        val url = args.getString(URL_KEY) ?: return
+        val headers = source.headers.toMultimap().mapValues { it.value.getOrNull(0) ?: "" }
+
+        val web = view as WebView
+        web.settings.javaScriptEnabled = true
+        web.settings.userAgentString = source.headers["User-Agent"]
+        web.loadUrl(url, headers)
+    }
+
+    override fun onDestroyView(view: View) {
+        val web = view as WebView
+        web.stopLoading()
+        web.destroy()
+        super.onDestroyView(view)
+    }
+
+    private companion object {
+        const val SOURCE_KEY = "source_key"
+        const val URL_KEY = "url_key"
+    }
+
+}

app/src/main/res/layout/manga_info_web_controller.xml

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<WebView
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+</WebView>

app/src/main/res/menu/manga_info.xml

@@ -12,6 +12,10 @@
         android:title="@string/action_open_in_browser"
         app:showAsAction="never"/>
 
+    <item android:id="@+id/action_open_in_web_view"
+        android:title="@string/action_open_in_web_view"
+        app:showAsAction="never"/>
+
     <item android:id="@+id/action_add_to_home_screen"
         android:title="@string/action_add_to_home_screen"
         app:showAsAction="never"/>

app/src/main/res/values/strings.xml

@@ -73,6 +73,7 @@
     <string name="action_resume">Resume</string>
     <string name="action_move">Move</string>
     <string name="action_open_in_browser">Open in browser</string>
+    <string name="action_open_in_web_view">Open in web view</string>
     <string name="action_add_to_home_screen">Add to home screen</string>
     <string name="action_display_mode">Change display mode</string>
     <string name="action_display">Display</string>