HelpActivity.java

/*
   Activity that displays the help pages
 
   Copyright 2013 Thincast Technologies GmbH, Author: Martin Fleisz
 
   This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0.
   If a copy of the MPL was not distributed with this file, You can obtain one at
   http://mozilla.org/MPL/2.0/.
*/
 
package com.freerdp.freerdpcore.presentation;
 
import android.content.res.Configuration;
import android.os.Bundle;
import androidx.appcompat.app.AppCompatActivity;
import android.util.Log;
import android.webkit.WebSettings;
import android.webkit.WebView;
 
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.Locale;
 
public class HelpActivity extends AppCompatActivity
{
 
  private static final String TAG = HelpActivity.class.toString();
 
  @Override public void onCreate(Bundle savedInstanceState)
  {
    super.onCreate(savedInstanceState);
 
    WebView webview = new WebView(this);
    setContentView(webview);
 
    String filename;
    if ((getResources().getConfiguration().screenLayout &
         Configuration.SCREENLAYOUT_SIZE_MASK) >= Configuration.SCREENLAYOUT_SIZE_LARGE)
      filename = "gestures.html";
    else
      filename = "gestures_phone.html";
 
    WebSettings settings = webview.getSettings();
    settings.setDomStorageEnabled(true);
    settings.setUseWideViewPort(true);
    settings.setLoadWithOverviewMode(true);
    settings.setSupportZoom(true);
    settings.setJavaScriptEnabled(true);
 
    settings.setAllowContentAccess(true);
    settings.setAllowFileAccess(true);
 
    final Locale def = Locale.getDefault();
    final String prefix = def.getLanguage().toLowerCase(def);
 
    final String base = "file:///android_asset/";
    final String baseName = "help_page";
    String dir = prefix + "_" + baseName + "/";
    String file = dir + filename;
    InputStream is;
    try
    {
      is = getAssets().open(file);
      is.close();
    }
    catch (IOException e)
    {
      Log.e(TAG, "Missing localized asset " + file, e);
      dir = baseName + "/";
      file = dir + filename;
    }
 
    webview.loadUrl(base + file);
  }
}