AboutActivity.java

/*
   Activity that displays the about page
 
   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.pm.PackageManager;
import android.content.res.Configuration;
import android.os.Build;
import android.os.Bundle;
import android.util.Log;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.webkit.WebViewClient;
 
import androidx.appcompat.app.AppCompatActivity;
 
import com.freerdp.freerdpcore.R;
import com.freerdp.freerdpcore.services.LibFreeRDP;
 
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.Locale;
 
public class AboutActivity extends AppCompatActivity
{
  private static final String TAG = AboutActivity.class.toString();
  private WebView mWebView;
 
  @Override protected void onCreate(Bundle savedInstanceState)
  {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_about);
 
    if (getSupportActionBar() != null)
      getSupportActionBar().setDisplayHomeAsUpEnabled(true);
 
    mWebView = findViewById(R.id.activity_about_webview);
 
    WebSettings settings = mWebView.getSettings();
    settings.setDomStorageEnabled(true);
    settings.setUseWideViewPort(true);
    settings.setLoadWithOverviewMode(true);
    settings.setSupportZoom(true);
 
    mWebView.setWebViewClient(new WebViewClient() {
      @Override public boolean shouldOverrideUrlLoading(WebView view, String url)
      {
        if (url.startsWith("file:///android_asset/"))
        {
          view.loadUrl(url);
          return true;
        }
        return false;
      }
    });
 
    populate();
  }
 
  @Override public boolean onSupportNavigateUp()
  {
    finish();
    return true;
  }
 
  private void populate()
  {
    String filename = "about_phone.html";
    if ((getResources().getConfiguration().screenLayout &
         Configuration.SCREENLAYOUT_SIZE_MASK) >= Configuration.SCREENLAYOUT_SIZE_LARGE)
      filename = "about.html";
 
    Locale def = Locale.getDefault();
    String prefix = def.getLanguage().toLowerCase(def);
    String dir = prefix + "_about_page/";
    String file = dir + filename;
 
    try
    {
      InputStream is = getAssets().open(file);
      is.close();
    }
    catch (IOException e)
    {
      Log.d(TAG, "No localized asset " + file + ", falling back to default");
      dir = "about_page/";
      file = dir + filename;
    }
 
    StringBuilder total = new StringBuilder();
    try (BufferedReader r = new BufferedReader(new InputStreamReader(getAssets().open(file))))
    {
      String line;
      while ((line = r.readLine()) != null)
      {
        total.append(line);
        total.append("\n");
      }
    }
    catch (IOException e)
    {
      Log.e(TAG, "Could not read about page " + file, e);
    }
 
    String version;
    try
    {
      version = getPackageManager().getPackageInfo(getPackageName(), 0).versionName;
    }
    catch (PackageManager.NameNotFoundException e)
    {
      version = "unknown";
    }
    version = version + " (" + LibFreeRDP.getVersion() + ")";
 
    final String base = "file:///android_asset/" + dir;
    final String html = total.toString()
                            .replaceAll("%AFREERDP_VERSION%", version)
                            .replaceAll("%SYSTEM_VERSION%", Build.VERSION.RELEASE)
                            .replaceAll("%DEVICE_MODEL%", Build.MODEL);
 
    mWebView.loadDataWithBaseURL(base, html, "text/html", null, "about:blank");
  }
}