/*
- * Copyright © 2017-2018 Soren Stoutner <soren@stoutner.com>.
+ * Copyright © 2017-2019 Soren Stoutner <soren@stoutner.com>.
*
* This file is part of Privacy Browser <https://www.stoutner.com/privacy-browser>.
*
package com.stoutner.privacybrowser.activities;
-import android.annotation.SuppressLint;
import android.app.Activity;
import android.app.DialogFragment;
import android.content.Context;
import android.os.LocaleList;
import android.preference.PreferenceManager;
import android.support.v4.app.NavUtils;
+import android.support.v4.widget.SwipeRefreshLayout;
import android.support.v7.app.ActionBar;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
+import android.view.WindowManager;
import android.view.inputmethod.InputMethodManager;
import android.webkit.CookieManager;
import android.widget.EditText;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
+import java.lang.ref.WeakReference;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.Locale;
public class ViewSourceActivity extends AppCompatActivity {
// `activity` is used in `onCreate()` and `goBack()`.
- Activity activity;
+ private Activity activity;
// The color spans are used in `onCreate()` and `highlightUrlText()`.
private ForegroundColorSpan redColorSpan;
@Override
protected void onCreate(Bundle savedInstanceState) {
+ // Disable screenshots if not allowed.
+ if (!MainWebViewActivity.allowScreenshots) {
+ getWindow().addFlags(WindowManager.LayoutParams.FLAG_SECURE);
+ }
+
// Set the theme.
if (MainWebViewActivity.darkTheme) {
setTheme(R.style.PrivacyBrowserDark);
// Get a handle for the input method manager, which is used to hide the keyboard.
InputMethodManager inputMethodManager = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
- // Let Android Studio know that we aren't worried about the input method manager being null.
+ // Remove the lint warning that the input method manager might be null.
assert inputMethodManager != null;
// Remove the formatting from the URL when the user is editing the text.
// Hide the soft keyboard.
inputMethodManager.hideSoftInputFromWindow(urlEditText.getWindowToken(), 0);
+ // Move to the beginning of the string.
+ urlEditText.setSelection(0);
+
// Reapply the highlighting.
highlightUrlText();
-
-
}
});
// Remove the focus from the URL box.
urlEditText.clearFocus();
- // Get new source data for the current URL.
- new GetSource().execute(urlEditText.getText().toString());
+ // Get the URL.
+ String url = urlEditText.getText().toString();
+
+ // Get new source data for the current URL if it beings with `http`.
+ if (url.startsWith("http")) {
+ new GetSource(this).execute(url);
+ }
// Consume the key press.
return true;
}
});
- // Get the source as an `AsyncTask`.
- new GetSource().execute(formattedUrlString);
+ // Implement swipe to refresh.
+ SwipeRefreshLayout swipeRefreshLayout = findViewById(R.id.view_source_swiperefreshlayout);
+ swipeRefreshLayout.setOnRefreshListener(() -> {
+ // Get the URL.
+ String url = urlEditText.getText().toString();
+
+ // Get new source data for the URL if it begins with `http`.
+ if (url.startsWith("http")) {
+ new GetSource(this).execute(url);
+ } else {
+ // Stop the refresh animation.
+ swipeRefreshLayout.setRefreshing(false);
+ }
+ });
+
+ // Set the swipe to refresh color according to the theme.
+ if (MainWebViewActivity.darkTheme) {
+ swipeRefreshLayout.setColorSchemeResources(R.color.blue_600);
+ swipeRefreshLayout.setProgressBackgroundColorSchemeResource(R.color.gray_800);
+ } else {
+ swipeRefreshLayout.setColorSchemeResources(R.color.blue_700);
+ }
+
+ // Get the source using an AsyncTask if the URL begins with `http`.
+ if (formattedUrlString.startsWith("http")) {
+ new GetSource(this).execute(formattedUrlString);
+ }
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
- // Inflate the menu; this adds items to the action bar if it is present.
+ // Inflate the menu. This adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.view_source_options_menu, menu);
// Display the menu.
// Get a handle for the URL EditText.
EditText urlEditText = findViewById(R.id.url_edittext);
- // Get the URL.
+ // Get the URL string.
String urlString = urlEditText.getText().toString();
- // Highlight the beginning of the URL.
- if (urlString.startsWith("http://")) { // Highlight the protocol of connections that are not encrypted.
- urlEditText.getText().setSpan(redColorSpan, 0, 7, Spanned.SPAN_INCLUSIVE_INCLUSIVE);
- } else if (urlString.startsWith("https://")) { // De-emphasize the protocol of connections that are encrypted.
- urlEditText.getText().setSpan(initialGrayColorSpan, 0, 8, Spanned.SPAN_INCLUSIVE_INCLUSIVE);
- }
+ // Highlight the URL according to the protocol.
+ if (urlString.startsWith("file://")) { // This is a file URL.
+ // De-emphasize only the protocol.
+ urlEditText.getText().setSpan(initialGrayColorSpan, 0, 7, Spanned.SPAN_INCLUSIVE_INCLUSIVE);
+ } else if (urlString.startsWith("content://")) {
+ // De-emphasize only the protocol.
+ urlEditText.getText().setSpan(initialGrayColorSpan, 0, 10, Spanned.SPAN_INCLUSIVE_INCLUSIVE);
+ } else { // This is a web URL.
+ // Get the index of the `/` immediately after the domain name.
+ int endOfDomainName = urlString.indexOf("/", (urlString.indexOf("//") + 2));
+
+ // Create a base URL string.
+ String baseUrl;
+
+ // Get the base URL.
+ if (endOfDomainName > 0) { // There is at least one character after the base URL.
+ // Get the base URL.
+ baseUrl = urlString.substring(0, endOfDomainName);
+ } else { // There are no characters after the base URL.
+ // Set the base URL to be the entire URL string.
+ baseUrl = urlString;
+ }
+
+ // Get the index of the last `.` in the domain.
+ int lastDotIndex = baseUrl.lastIndexOf(".");
+
+ // Get the index of the penultimate `.` in the domain.
+ int penultimateDotIndex = baseUrl.lastIndexOf(".", lastDotIndex - 1);
- // Get the index of the `/` immediately after the domain name.
- int endOfDomainName = urlString.indexOf("/", (urlString.indexOf("//") + 2));
+ // Markup the beginning of the URL.
+ if (urlString.startsWith("http://")) { // Highlight the protocol of connections that are not encrypted.
+ urlEditText.getText().setSpan(redColorSpan, 0, 7, Spanned.SPAN_INCLUSIVE_INCLUSIVE);
- // De-emphasize the text after the domain name.
- if (endOfDomainName > 0) {
- urlEditText.getText().setSpan(finalGrayColorSpan, endOfDomainName, urlString.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
+ // De-emphasize subdomains.
+ if (penultimateDotIndex > 0) { // There is more than one subdomain in the domain name.
+ urlEditText.getText().setSpan(initialGrayColorSpan, 7, penultimateDotIndex + 1, Spanned.SPAN_INCLUSIVE_INCLUSIVE);
+ }
+ } else if (urlString.startsWith("https://")) { // De-emphasize the protocol of connections that are encrypted.
+ if (penultimateDotIndex > 0) { // There is more than one subdomain in the domain name.
+ // De-emphasize the protocol and the additional subdomains.
+ urlEditText.getText().setSpan(initialGrayColorSpan, 0, penultimateDotIndex + 1, Spanned.SPAN_INCLUSIVE_INCLUSIVE);
+ } else { // There is only one subdomain in the domain name.
+ // De-emphasize only the protocol.
+ urlEditText.getText().setSpan(initialGrayColorSpan, 0, 8, Spanned.SPAN_INCLUSIVE_INCLUSIVE);
+ }
+ }
+
+ // De-emphasize the text after the domain name.
+ if (endOfDomainName > 0) {
+ urlEditText.getText().setSpan(finalGrayColorSpan, endOfDomainName, urlString.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
+ }
}
}
- // The first `String` declares the parameters. The `Void` does not declare progress units. The last `String` contains the results.
- // `StaticFieldLeaks` are suppressed so that Android Studio doesn't complain about running an AsyncTask in a non-static context.
- @SuppressLint("StaticFieldLeak")
- private class GetSource extends AsyncTask<String, Void, String> {
- // The class variables pass information from `doInBackground()` to `onPostExecute()`.
- SpannableStringBuilder responseMessageBuilder;
- SpannableStringBuilder requestHeadersBuilder;
- SpannableStringBuilder responseHeadersBuilder;
+ // `String` declares the parameters. `Void` does not declare progress units. `SpannableStringBuilder[]` contains the results.
+ private static class GetSource extends AsyncTask<String, Void, SpannableStringBuilder[]> {
+ // Create a weak reference to the calling activity.
+ private WeakReference<Activity> activityWeakReference;
+
+ // Populate the weak reference to the calling activity.
+ GetSource(Activity activity) {
+ activityWeakReference = new WeakReference<>(activity);
+ }
// `onPreExecute()` operates on the UI thread.
@Override
protected void onPreExecute() {
+ // Get a handle for the activity.
+ Activity viewSourceActivity = activityWeakReference.get();
+
+ // Abort if the activity is gone.
+ if ((viewSourceActivity == null) || viewSourceActivity.isFinishing()) {
+ return;
+ }
+
// Get a handle for the progress bar.
- ProgressBar progressBar = findViewById(R.id.progress_bar);
+ ProgressBar progressBar = viewSourceActivity.findViewById(R.id.progress_bar);
// Make the progress bar visible.
progressBar.setVisibility(View.VISIBLE);
}
@Override
- protected String doInBackground(String... formattedUrlString) {
- // Initialize the response body `String`.
- String responseBodyString = "";
+ protected SpannableStringBuilder[] doInBackground(String... formattedUrlString) {
+ // Initialize the response body String.
+ SpannableStringBuilder requestHeadersBuilder = new SpannableStringBuilder();
+ SpannableStringBuilder responseMessageBuilder = new SpannableStringBuilder();
+ SpannableStringBuilder responseHeadersBuilder = new SpannableStringBuilder();
+ SpannableStringBuilder responseBodyBuilder = new SpannableStringBuilder();
+
+ // Get a handle for the activity.
+ Activity activity = activityWeakReference.get();
+
+ // Abort if the activity is gone.
+ if ((activity == null) || activity.isFinishing()) {
+ return new SpannableStringBuilder[] {requestHeadersBuilder, responseMessageBuilder, responseHeadersBuilder, responseBodyBuilder};
+ }
// Because everything relating to requesting data from a webserver can throw errors, the entire section must catch `IOExceptions`.
try {
// Get a handle for the shared preferences.
- SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
+ SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(activity.getApplicationContext());
// Only populate `Do Not Track` if it is enabled.
if (sharedPreferences.getBoolean("do_not_track", false)) {
// Populate the locale string.
if (Build.VERSION.SDK_INT >= 24) { // SDK >= 24 has a list of locales.
// Get the list of locales.
- LocaleList localeList = getResources().getConfiguration().getLocales();
+ LocaleList localeList = activity.getResources().getConfiguration().getLocales();
// Initialize a string builder to extract the locales from the list.
StringBuilder localesStringBuilder = new StringBuilder();
inputStream.close();
// Populate the response body string with the contents of the byte array output stream.
- responseBodyString = byteArrayOutputStream.toString();
+ responseBodyBuilder.append(byteArrayOutputStream.toString());
} finally {
// Disconnect `httpUrlConnection`.
httpUrlConnection.disconnect();
}
// Return the response body string as the result.
- return responseBodyString;
+ return new SpannableStringBuilder[] {requestHeadersBuilder, responseMessageBuilder, responseHeadersBuilder, responseBodyBuilder};
}
// `onPostExecute()` operates on the UI thread.
@Override
- protected void onPostExecute(String responseBodyString){
+ protected void onPostExecute(SpannableStringBuilder[] viewSourceStringArray){
+ // Get a handle for the activity.
+ Activity activity = activityWeakReference.get();
+
+ // Abort if the activity is gone.
+ if ((activity == null) || activity.isFinishing()) {
+ return;
+ }
+
// Get handles for the text views.
- TextView requestHeadersTextView = findViewById(R.id.request_headers);
- TextView responseMessageTextView = findViewById(R.id.response_message);
- TextView responseHeadersTextView = findViewById(R.id.response_headers);
- TextView responseBodyTextView = findViewById(R.id.response_body);
- ProgressBar progressBar = findViewById(R.id.progress_bar);
-
- // Populate the text views.
- requestHeadersTextView.setText(requestHeadersBuilder);
- responseMessageTextView.setText(responseMessageBuilder);
- responseHeadersTextView.setText(responseHeadersBuilder);
- responseBodyTextView.setText(responseBodyString);
+ TextView requestHeadersTextView = activity.findViewById(R.id.request_headers);
+ TextView responseMessageTextView = activity.findViewById(R.id.response_message);
+ TextView responseHeadersTextView = activity.findViewById(R.id.response_headers);
+ TextView responseBodyTextView = activity.findViewById(R.id.response_body);
+ ProgressBar progressBar = activity.findViewById(R.id.progress_bar);
+ SwipeRefreshLayout swipeRefreshLayout = activity.findViewById(R.id.view_source_swiperefreshlayout);
+
+ // Populate the text views. This can take a long time, and freeze the user interface, if the response body is particularly large.
+ requestHeadersTextView.setText(viewSourceStringArray[0]);
+ responseMessageTextView.setText(viewSourceStringArray[1]);
+ responseHeadersTextView.setText(viewSourceStringArray[2]);
+ responseBodyTextView.setText(viewSourceStringArray[3]);
// Hide the progress bar.
progressBar.setIndeterminate(false);
progressBar.setVisibility(View.GONE);
+
+ //Stop the swipe to refresh indicator if it is running
+ swipeRefreshLayout.setRefreshing(false);
}
}
}
\ No newline at end of file
projects / PrivacyBrowserAndroid.git / blobdiff