mirror of https://github.com/M66B/FairEmail.git
545 lines
20 KiB
Java
545 lines
20 KiB
Java
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 2018-2024 by Marcel Bokhorst (M66B)
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*/
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import android.content.ContentResolver;
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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.Spanned;
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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.WebSettings;
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import android.webkit.WebView;
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import android.webkit.WebViewClient;
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import android.widget.Toast;
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import androidx.activity.OnBackPressedCallback;
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import androidx.annotation.NonNull;
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import androidx.appcompat.app.AlertDialog;
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import androidx.appcompat.widget.SearchView;
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import androidx.constraintlayout.widget.Group;
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import androidx.preference.PreferenceManager;
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import androidx.webkit.WebSettingsCompat;
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import androidx.webkit.WebViewFeature;
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import org.jsoup.Jsoup;
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import org.jsoup.nodes.Document;
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import org.jsoup.nodes.Element;
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import org.jsoup.parser.ParseError;
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import org.jsoup.parser.ParseErrorList;
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import org.jsoup.parser.Parser;
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import org.w3c.dom.css.CSSStyleSheet;
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.FileNotFoundException;
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import java.io.InputStream;
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import java.io.OutputStream;
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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 force_light = false;
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private boolean sanitize = false;
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private boolean lines = false;
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private boolean links = false;
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private boolean pretty = true;
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private String searching = null;
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private static final int REQUEST_SAVE = 1;
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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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force_light = savedInstanceState.getBoolean("fair:force_light");
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sanitize = savedInstanceState.getBoolean("fair:sanitize");
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lines = savedInstanceState.getBoolean("fair:lines");
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links = savedInstanceState.getBoolean("fair:links");
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pretty = savedInstanceState.getBoolean("fair:pretty");
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searching = savedInstanceState.getString("fair:searching");
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}
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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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wvCode.clearCache(true);
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WebSettings settings = wvCode.getSettings();
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settings.setBuiltInZoomControls(true);
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settings.setDisplayZoomControls(false);
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settings.setCacheMode(WebSettings.LOAD_CACHE_ONLY);
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settings.setMixedContentMode(WebSettings.MIXED_CONTENT_NEVER_ALLOW);
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if (WebViewEx.isFeatureSupported(this, WebViewFeature.ATTRIBUTION_REGISTRATION_BEHAVIOR))
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WebSettingsCompat.setAttributionRegistrationBehavior(settings, WebSettingsCompat.ATTRIBUTION_BEHAVIOR_DISABLED);
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settings.setLoadsImagesAutomatically(false);
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settings.setBlockNetworkLoads(true);
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settings.setBlockNetworkImage(true);
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settings.setAllowFileAccess(false);
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settings.setJavaScriptEnabled(true);
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setDarkMode();
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wvCode.setWebViewClient(new WebViewClient() {
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@Override
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public boolean shouldOverrideUrlLoading(WebView view, String url) {
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Bundle args = new Bundle();
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args.putParcelable("uri", Uri.parse(url));
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args.putString("title", null);
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args.putBoolean("always_confirm", true);
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FragmentDialogOpenLink fragment = new FragmentDialogOpenLink();
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fragment.setArguments(args);
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fragment.show(getSupportFragmentManager(), "open:link");
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return true;
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}
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public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) {
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Log.w("View code error " + errorCode + ":" + description);
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}
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});
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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:force_light", force_light);
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outState.putBoolean("fair:sanitize", sanitize);
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outState.putBoolean("fair:lines", lines);
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outState.putBoolean("fair:links", links);
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outState.putBoolean("fair:pretty", pretty);
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outState.putString("fair:searching", searching);
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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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final String saved = searching;
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final MenuItem menuSearch = menu.findItem(R.id.menu_search);
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final SearchView searchView = (SearchView) menuSearch.getActionView();
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if (searchView != null)
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searchView.setQueryHint(getString(R.string.title_search));
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if (searchView != null) {
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searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
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@Override
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public boolean onQueryTextSubmit(String query) {
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search(query);
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return false;
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}
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@Override
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public boolean onQueryTextChange(String newText) {
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search(newText);
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return false;
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}
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private void search(String query) {
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searching = query;
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if (wvCode != null)
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wvCode.findAllAsync(query);
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}
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});
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if (!TextUtils.isEmpty(saved)) {
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menuSearch.expandActionView();
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searchView.setQuery(saved, false);
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}
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}
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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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boolean dark = Helper.isDarkTheme(this);
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boolean canDarken = WebViewEx.isFeatureSupported(this, WebViewFeature.ALGORITHMIC_DARKENING);
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menu.findItem(R.id.menu_force_light)
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.setVisible(dark && canDarken)
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.getIcon().setLevel(force_light ? 1 : 0);
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menu.findItem(R.id.menu_sanitize)
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.setVisible(BuildConfig.DEBUG || debug)
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.setIcon(sanitize
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? R.drawable.twotone_fullscreen_24
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: R.drawable.twotone_fullscreen_exit_24)
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.setTitle(getString(sanitize
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? R.string.title_legend_show_full
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: R.string.title_legend_show_reformatted));
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menu.findItem(R.id.menu_lines).setChecked(lines);
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menu.findItem(R.id.menu_links).setChecked(links);
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menu.findItem(R.id.menu_pretty).setChecked(pretty);
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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 == R.id.menu_force_light) {
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force_light = !force_light;
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item.getIcon().setLevel(force_light ? 1 : 0);
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setDarkMode();
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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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invalidateOptionsMenu();
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load();
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return true;
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} else 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_lines) {
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lines = !lines;
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item.setChecked(lines);
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load();
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return true;
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} else if (itemId == R.id.menu_links) {
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links = !links;
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item.setChecked(links);
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load();
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return true;
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} else if (itemId == R.id.menu_pretty) {
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pretty = !pretty;
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item.setChecked(pretty);
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load();
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return true;
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} else if (itemId == R.id.menu_check_html) {
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checkHtml();
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return true;
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} else if (itemId == R.id.menu_save) {
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selectFile();
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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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@Override
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public void onActivityResult(int requestCode, int resultCode, Intent data) {
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super.onActivityResult(requestCode, resultCode, data);
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try {
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switch (requestCode) {
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case REQUEST_SAVE:
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if (resultCode == RESULT_OK)
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save(data);
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break;
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}
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} catch (Throwable ex) {
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Log.e(ex);
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}
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}
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private void setDarkMode() {
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WebSettings settings = wvCode.getSettings();
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boolean dark = (Helper.isDarkTheme(this) && !force_light);
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boolean canDarken = WebViewEx.isFeatureSupported(this, WebViewFeature.ALGORITHMIC_DARKENING);
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if (canDarken)
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WebSettingsCompat.setAlgorithmicDarkeningAllowed(settings, dark);
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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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CharSequence selected = intent.getCharSequenceExtra("selected");
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Log.i("Show code message=" + id + " selected=" + (selected != null) +
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" lines=" + lines + " links=" + links + " sanitize=" + sanitize);
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Bundle args = new Bundle();
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args.putLong("id", id);
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args.putCharSequence("selected", selected);
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args.putBoolean("sanitize", sanitize);
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args.putBoolean("pretty", pretty);
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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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CharSequence selected = args.getCharSequence("selected");
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boolean sanitize = args.getBoolean("sanitize");
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boolean pretty = args.getBoolean("pretty");
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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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Document d;
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if (selected == null) {
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File file = message.getFile(context);
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d = JsoupEx.parse(file);
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} else {
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String html = HtmlHelper.toHtml((Spanned) selected, context);
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d = JsoupEx.parse(html);
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}
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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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}
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d.outputSettings()
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.prettyPrint(pretty)
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.outline(pretty)
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.indentAmount(1);
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if (selected == null)
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return d.html();
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else
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return d.body().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 clazz = "language-html";
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if (lines)
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clazz += " line-numbers";
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String html = "<!DOCTYPE html>" +
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"<html>" +
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"<head>" +
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" <meta charset=\"utf-8\" />" +
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" <meta name=\"viewport\" content=\"width=device-width, initial-scale=0.5\" />" +
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" <link href=\"file:///android_asset/prism.css\" rel=\"stylesheet\" />" +
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(links ? " <link href=\"file:///android_asset/prism-autolinker.min.css\" rel=\"stylesheet\" />" : "") +
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" <style>" +
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" body { margin: 0 !important; font-size: smaller !important; }" +
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" pre { margin-top: 0 !important; margin-bottom: 0 !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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(links ? " <script src=\"file:///android_asset/prism-autolinker.min.js\"></script>" : "") +
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" <pre><code class=\"" + clazz + "\">" + Html.escapeHtml(code) + "</code></pre>" +
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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, "code:view");
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}
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private void checkHtml() {
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Intent intent = getIntent();
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long id = intent.getLongExtra("id", -1L);
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Bundle args = new Bundle();
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args.putLong("id", id);
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new SimpleTask<ParseErrorList>() {
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@Override
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protected ParseErrorList onExecute(Context context, Bundle args) throws Throwable {
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long id = args.getLong("id");
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File file = EntityMessage.getFile(context, id);
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Parser parser = Parser.htmlParser().setTrackErrors(20);
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Jsoup.parse(file, StandardCharsets.UTF_8.name(), "", parser);
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return parser.getErrors();
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}
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@Override
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protected void onExecuted(Bundle args, ParseErrorList errors) {
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lines = true;
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pretty = false;
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load();
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SpannableStringBuilderEx ssb = new SpannableStringBuilderEx();
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ssb.append("Errors: ")
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.append(Integer.toString(errors.size()))
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.append("\n\n");
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for (ParseError error : errors)
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ssb.append("At ")
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.append(error.getCursorPos())
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.append(' ')
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.append(error.getErrorMessage())
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.append("\n\n");
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new AlertDialog.Builder(ActivityCode.this)
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.setIcon(R.drawable.twotone_bug_report_24)
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.setTitle(R.string.title_check_html)
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.setMessage(ssb)
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.setPositiveButton(android.R.string.ok, null)
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.show();
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}
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@Override
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protected void onException(Bundle args, Throwable ex) {
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Log.unexpectedError(getSupportFragmentManager(), ex);
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}
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}.execute(this, args, "code:check");
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}
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private void selectFile() {
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long id = getIntent().getLongExtra("id", -1L);
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Intent intent = new Intent(Intent.ACTION_CREATE_DOCUMENT);
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intent.addCategory(Intent.CATEGORY_OPENABLE);
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intent.addFlags(Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
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intent.setType("*/*");
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intent.putExtra(Intent.EXTRA_TITLE, Long.toString(id) + ".html");
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Helper.openAdvanced(this, intent);
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startActivityForResult(intent, REQUEST_SAVE);
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}
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private void save(Intent data) {
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long id = getIntent().getLongExtra("id", -1L);
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Bundle args = new Bundle();
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args.putLong("id", id);
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args.putParcelable("uri", data.getData());
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new SimpleTask<Void>() {
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private Toast toast = null;
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@Override
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protected void onPreExecute(Bundle args) {
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toast = ToastEx.makeText(ActivityCode.this, R.string.title_executing, Toast.LENGTH_LONG);
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toast.show();
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}
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@Override
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protected void onPostExecute(Bundle args) {
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if (toast != null)
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toast.cancel();
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}
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@Override
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protected Void onExecute(Context context, Bundle args) throws Throwable {
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long id = args.getLong("id");
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Uri uri = args.getParcelable("uri");
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if (uri == null)
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throw new FileNotFoundException();
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if (!"content".equals(uri.getScheme())) {
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Log.w("Export uri=" + uri);
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throw new IllegalArgumentException(uri.getScheme());
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}
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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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File file = message.getFile(context);
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ContentResolver resolver = context.getContentResolver();
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try (OutputStream os = resolver.openOutputStream(uri)) {
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try (InputStream is = new FileInputStream(file)) {
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Helper.copy(is, os);
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}
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}
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return null;
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}
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@Override
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protected void onExecuted(Bundle args, Void data) {
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ToastEx.makeText(ActivityCode.this, R.string.title_completed, Toast.LENGTH_LONG).show();
|
|
}
|
|
|
|
@Override
|
|
protected void onException(Bundle args, @NonNull Throwable ex) {
|
|
Log.unexpectedError(getSupportFragmentManager(), ex, false);
|
|
}
|
|
}.execute(this, args, "code:save");
|
|
}
|
|
}
|