package eu.faircode.email; /* This file is part of FairEmail. FairEmail is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. FairEmail is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with FairEmail. If not, see . Copyright 2018-2023 by Marcel Bokhorst (M66B) */ import android.content.Context; import android.content.Intent; import android.content.SharedPreferences; import android.net.Uri; import android.os.Bundle; import android.text.Html; import android.text.Spanned; import android.text.TextUtils; import android.view.LayoutInflater; import android.view.Menu; import android.view.MenuInflater; import android.view.MenuItem; import android.view.View; import android.webkit.WebSettings; import android.webkit.WebView; import android.webkit.WebViewClient; import androidx.activity.OnBackPressedCallback; import androidx.annotation.NonNull; import androidx.constraintlayout.widget.Group; import androidx.preference.PreferenceManager; import org.jsoup.nodes.Document; import org.jsoup.nodes.Element; import org.w3c.dom.css.CSSStyleSheet; import java.io.File; import java.nio.charset.StandardCharsets; import java.util.List; public class ActivityCode extends ActivityBase { private WebView wvCode; private ContentLoadingProgressBar pbWait; private Group grpReady; private boolean lines = BuildConfig.DEBUG; private boolean links = false; private boolean sanitize = BuildConfig.DEBUG; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); if (savedInstanceState != null) { lines = savedInstanceState.getBoolean("fair:lines"); links = savedInstanceState.getBoolean("fair:links"); sanitize = savedInstanceState.getBoolean("fair:sanitize"); } getSupportActionBar().setDisplayHomeAsUpEnabled(true); getOnBackPressedDispatcher().addCallback(this, new OnBackPressedCallback(true) { @Override public void handleOnBackPressed() { finishAndRemoveTask(); } }); View view = LayoutInflater.from(this).inflate(R.layout.activity_code, null); setContentView(view); wvCode = findViewById(R.id.wvCode); pbWait = findViewById(R.id.pbWait); grpReady = findViewById(R.id.grpReady); WebSettings settings = wvCode.getSettings(); settings.setBuiltInZoomControls(true); settings.setDisplayZoomControls(false); settings.setAllowFileAccess(false); settings.setCacheMode(WebSettings.LOAD_CACHE_ONLY); settings.setMixedContentMode(WebSettings.MIXED_CONTENT_NEVER_ALLOW); settings.setLoadsImagesAutomatically(false); settings.setBlockNetworkLoads(true); settings.setBlockNetworkImage(true); settings.setJavaScriptEnabled(true); wvCode.setWebViewClient(new WebViewClient() { @Override public boolean shouldOverrideUrlLoading(WebView view, String url) { Bundle args = new Bundle(); args.putParcelable("uri", Uri.parse(url)); args.putString("title", null); args.putBoolean("always_confirm", true); FragmentDialogOpenLink fragment = new FragmentDialogOpenLink(); fragment.setArguments(args); fragment.show(getSupportFragmentManager(), "open:link"); return true; } public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { Log.w("View code error " + errorCode + ":" + description); } }); // Initialize grpReady.setVisibility(View.GONE); load(); } @Override protected void onNewIntent(Intent intent) { super.onNewIntent(intent); setIntent(intent); load(); } @Override protected void onSaveInstanceState(Bundle outState) { outState.putBoolean("fair:lines", lines); outState.putBoolean("fair:links", links); outState.putBoolean("fair:sanitize", sanitize); super.onSaveInstanceState(outState); } @Override public boolean onCreateOptionsMenu(Menu menu) { MenuInflater inflater = getMenuInflater(); inflater.inflate(R.menu.menu_code, menu); return true; } @Override public boolean onPrepareOptionsMenu(Menu menu) { SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this); boolean debug = prefs.getBoolean("debug", false); menu.findItem(R.id.menu_lines) .setChecked(lines) .setIcon(lines ? R.drawable.twotone_speaker_notes_off_24 : R.drawable.twotone_speaker_notes_24); menu.findItem(R.id.menu_links) .setChecked(links) .setIcon(links ? R.drawable.twotone_link_off_24 : R.drawable.twotone_link_24); menu.findItem(R.id.menu_sanitize) .setVisible(BuildConfig.DEBUG || debug) .setChecked(sanitize) .setIcon(sanitize ? R.drawable.twotone_fullscreen_24 : R.drawable.twotone_fullscreen_exit_24) .setTitle(getString(sanitize ? R.string.title_legend_show_full : R.string.title_legend_show_reformatted)); return super.onPrepareOptionsMenu(menu); } @Override public boolean onOptionsItemSelected(MenuItem item) { int itemId = item.getItemId(); if (itemId == android.R.id.home) { finishAndRemoveTask(); return true; } else if (itemId == R.id.menu_lines) { lines = !lines; invalidateOptionsMenu(); load(); return true; } else if (itemId == R.id.menu_links) { links = !links; invalidateOptionsMenu(); load(); return true; } else if (itemId == R.id.menu_sanitize) { sanitize = !sanitize; invalidateOptionsMenu(); load(); return true; } return super.onOptionsItemSelected(item); } private void load() { Intent intent = getIntent(); long id = intent.getLongExtra("id", -1L); CharSequence selected = intent.getCharSequenceExtra("selected"); Log.i("Show code message=" + id + " selected=" + (selected != null) + " lines=" + lines + " links=" + links + " sanitize=" + sanitize); Bundle args = new Bundle(); args.putLong("id", id); args.putCharSequence("selected", selected); args.putBoolean("sanitize", sanitize); new SimpleTask() { @Override protected void onPreExecute(Bundle args) { pbWait.setVisibility(View.VISIBLE); } @Override protected void onPostExecute(Bundle args) { pbWait.setVisibility(View.GONE); } @Override protected String onExecute(Context context, Bundle args) throws Throwable { long id = args.getLong("id"); CharSequence selected = args.getCharSequence("selected"); boolean sanitize = args.getBoolean("sanitize"); DB db = DB.getInstance(context); EntityMessage message = db.message().getMessage(id); if (message == null) return null; args.putString("subject", message.subject); Document d; if (selected == null) { File file = message.getFile(context); d = JsoupEx.parse(file); } else { String html = HtmlHelper.toHtml((Spanned) selected, context); d = JsoupEx.parse(html); } if (sanitize) { List sheets = HtmlHelper.parseStyles(d.head().select("style")); for (Element element : d.select("*")) { String computed = HtmlHelper.processStyles(context, element.tagName(), element.className(), element.attr("style"), sheets); if (!TextUtils.isEmpty(computed)) element.attr("x-computed", computed); } d = HtmlHelper.sanitizeView(context, d, false); d.outputSettings().prettyPrint(true).outline(true).indentAmount(1); } if (selected == null) return d.html(); else return d.body().html(); } @Override protected void onExecuted(Bundle args, String code) { getSupportActionBar().setSubtitle(args.getString("subject")); String clazz = "language-html"; if (lines) clazz += " line-numbers"; String html = "" + "" + "" + " " + " " + (links ? " " : "") + " " + "" + "" + " " + (links ? " " : "") + "
" + Html.escapeHtml(code) + "
" + "" + ""; wvCode.loadDataWithBaseURL("file:///android_asset/", html, "text/html", StandardCharsets.UTF_8.name(), null); grpReady.setVisibility(View.VISIBLE); } @Override protected void onException(Bundle args, @NonNull Throwable ex) { Log.unexpectedError(getSupportFragmentManager(), ex, false); } }.execute(this, args, "view:text"); } }