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M66B
221
app/src/main/java/eu/faircode/email/ActivityCode.java
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221
app/src/main/java/eu/faircode/email/ActivityCode.java
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package eu.faircode.email;
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/*
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This file is part of FairEmail.
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FairEmail is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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FairEmail is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with FairEmail. If not, see <http://www.gnu.org/licenses/>.
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Copyright 2018-2023 by Marcel Bokhorst (M66B)
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*/
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import android.content.Context;
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import android.content.Intent;
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import android.content.SharedPreferences;
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import android.net.Uri;
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import android.os.Bundle;
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import android.text.Html;
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import android.text.TextUtils;
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import android.view.LayoutInflater;
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import android.view.Menu;
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import android.view.MenuInflater;
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import android.view.MenuItem;
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import android.view.View;
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import android.webkit.WebResourceError;
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import android.webkit.WebResourceRequest;
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import android.webkit.WebSettings;
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import android.webkit.WebView;
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import android.webkit.WebViewClient;
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import androidx.activity.OnBackPressedCallback;
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import androidx.annotation.NonNull;
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import androidx.constraintlayout.widget.Group;
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import androidx.preference.PreferenceManager;
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import org.jsoup.nodes.Document;
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import org.jsoup.nodes.Element;
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import org.w3c.dom.css.CSSStyleSheet;
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import java.io.File;
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import java.nio.charset.StandardCharsets;
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import java.util.List;
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public class ActivityCode extends ActivityBase {
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private WebView wvCode;
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private ContentLoadingProgressBar pbWait;
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private Group grpReady;
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private boolean sanitize = BuildConfig.DEBUG;
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@Override
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protected void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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if (savedInstanceState != null)
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sanitize = savedInstanceState.getBoolean("fair:sanitize");
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getSupportActionBar().setDisplayHomeAsUpEnabled(true);
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getOnBackPressedDispatcher().addCallback(this, new OnBackPressedCallback(true) {
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@Override
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public void handleOnBackPressed() {
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finishAndRemoveTask();
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}
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});
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View view = LayoutInflater.from(this).inflate(R.layout.activity_code, null);
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setContentView(view);
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wvCode = findViewById(R.id.wvCode);
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pbWait = findViewById(R.id.pbWait);
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grpReady = findViewById(R.id.grpReady);
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WebSettings settings = wvCode.getSettings();
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settings.setJavaScriptEnabled(true);
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// Initialize
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grpReady.setVisibility(View.GONE);
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load();
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}
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@Override
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protected void onNewIntent(Intent intent) {
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super.onNewIntent(intent);
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setIntent(intent);
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load();
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}
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@Override
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protected void onSaveInstanceState(Bundle outState) {
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outState.putBoolean("fair:sanitize", sanitize);
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super.onSaveInstanceState(outState);
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}
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@Override
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public boolean onCreateOptionsMenu(Menu menu) {
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MenuInflater inflater = getMenuInflater();
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inflater.inflate(R.menu.menu_code, menu);
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return true;
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}
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@Override
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public boolean onPrepareOptionsMenu(Menu menu) {
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SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
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boolean debug = prefs.getBoolean("debug", false);
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menu.findItem(R.id.menu_sanitize)
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.setVisible(BuildConfig.DEBUG || debug)
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.setChecked(sanitize);
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return super.onPrepareOptionsMenu(menu);
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}
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@Override
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public boolean onOptionsItemSelected(MenuItem item) {
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int itemId = item.getItemId();
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if (itemId == android.R.id.home) {
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finishAndRemoveTask();
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return true;
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} else if (itemId == R.id.menu_sanitize) {
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sanitize = !sanitize;
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item.setChecked(sanitize);
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load();
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return true;
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}
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return super.onOptionsItemSelected(item);
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}
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private void load() {
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Intent intent = getIntent();
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long id = intent.getLongExtra("id", -1L);
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Log.i("Text id=" + id + " sanitize=" + sanitize);
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Bundle args = new Bundle();
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args.putLong("id", id);
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args.putBoolean("sanitize", sanitize);
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new SimpleTask<String>() {
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@Override
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protected void onPreExecute(Bundle args) {
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pbWait.setVisibility(View.VISIBLE);
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}
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@Override
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protected void onPostExecute(Bundle args) {
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pbWait.setVisibility(View.GONE);
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}
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@Override
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protected String onExecute(Context context, Bundle args) throws Throwable {
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long id = args.getLong("id");
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boolean sanitize = args.getBoolean("sanitize");
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DB db = DB.getInstance(context);
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EntityMessage message = db.message().getMessage(id);
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if (message == null)
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return null;
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args.putString("subject", message.subject);
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File file = message.getFile(context);
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Document d = JsoupEx.parse(file);
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if (sanitize) {
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List<CSSStyleSheet> sheets =
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HtmlHelper.parseStyles(d.head().select("style"));
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for (Element element : d.select("*")) {
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String computed = HtmlHelper.processStyles(context,
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element.tagName(),
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element.className(),
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element.attr("style"),
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sheets);
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if (!TextUtils.isEmpty(computed))
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element.attr("x-computed", computed);
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}
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d = HtmlHelper.sanitizeView(context, d, false);
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d.outputSettings().prettyPrint(true).outline(true).indentAmount(1);
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}
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return d.html();
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}
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@Override
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protected void onExecuted(Bundle args, String code) {
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getSupportActionBar().setSubtitle(args.getString("subject"));
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String html = "<!DOCTYPE html>" +
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"<html>" +
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"<head>" +
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"<link href=\"file:///android_asset/prism.css\" rel=\"stylesheet\" />" +
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"<style>" +
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" code[class=\"language-html\"] { font-size: smaller !important; }" +
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"</style>" +
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"</head>" +
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"<body>" +
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"<script src=\"file:///android_asset/prism.js\"></script>" +
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"<code class=\"language-html\">" + Html.escapeHtml(code) + "</code>" +
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"</body>" +
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"</html>";
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wvCode.loadDataWithBaseURL("file:///android_asset/", html, "text/html", StandardCharsets.UTF_8.name(), null);
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grpReady.setVisibility(View.VISIBLE);
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}
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@Override
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protected void onException(Bundle args, @NonNull Throwable ex) {
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Log.unexpectedError(getSupportFragmentManager(), ex, false);
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}
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}.execute(this, args, "view:text");
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}
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}
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