import android.app.Activity;
import android.content.Intent;
+import android.graphics.Bitmap;
import android.net.Uri;
-import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
+import android.support.v4.widget.SwipeRefreshLayout;
+import android.support.v7.app.ActionBar;
+import android.support.v7.app.AppCompatActivity;
+import android.util.Patterns;
import android.view.KeyEvent;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
+import android.view.ViewTreeObserver;
import android.view.inputmethod.InputMethodManager;
+import android.webkit.WebChromeClient;
import android.webkit.WebView;
+import android.webkit.WebViewClient;
import android.widget.EditText;
-
+import android.widget.ImageView;
+import android.widget.ProgressBar;
+import java.io.UnsupportedEncodingException;
+import java.net.MalformedURLException;
import java.net.URL;
+import java.net.URLEncoder;
-
-public class Webview extends ActionBarActivity {
+public class Webview extends AppCompatActivity {
static String formattedUrlString;
static WebView mainWebView;
+ static ProgressBar progressBar;
+ static SwipeRefreshLayout swipeToRefresh;
+ static EditText urlTextBox;
+ static ImageView favoriteIcon;
static final String homepage = "https://www.duckduckgo.com";
@Override
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_webview);
- final EditText urlTextBox = (EditText) findViewById(R.id.urlTextBox);
+ urlTextBox = (EditText) findViewById(R.id.urlTextBox);
+ swipeToRefresh = (SwipeRefreshLayout) findViewById(R.id.swipeRefreshLayoutContainer);
mainWebView = (WebView) findViewById(R.id.mainWebView);
+ progressBar = (ProgressBar) findViewById(R.id.progressBar);
+ favoriteIcon = (ImageView) findViewById(R.id.favoriteIcon);
+
+ // Remove the title from the action bar.
+ final ActionBar actionBar = getSupportActionBar();
+ if (actionBar != null) {
+ actionBar.setDisplayShowTitleEnabled(false);
+ // actionBar.setHideOnContentScrollEnabled(true);
+ }
+
+ // Implement swipe down to refresh.
+ swipeToRefresh.setColorSchemeColors(0xFF0097FF);
+ swipeToRefresh.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
+ @Override
+ public void onRefresh() {
+ mainWebView.loadUrl(formattedUrlString);
+ }
+ });
+
+ // Only enable swipeToRefresh if is mainWebView is scrolled to the top.
+ mainWebView.getViewTreeObserver().addOnScrollChangedListener(new ViewTreeObserver.OnScrollChangedListener() {
+ @Override
+ public void onScrollChanged() {
+ if (mainWebView.getScrollY() == 0) {
+ swipeToRefresh.setEnabled(true);
+ } else {
+ swipeToRefresh.setEnabled(false);
+ }
+ }
+ });
+
+ mainWebView.setWebViewClient(new WebViewClient() {
+
+ // setWebViewClient makes this WebView the default handler for URLs inside the app, so that links are not kicked out to other apps.
+ // Save the URL to formattedUrlString and update urlTextBox before loading mainWebView.
+ @Override
+ public boolean shouldOverrideUrlLoading(WebView view, String url) {
+ mainWebView.loadUrl(url);
+ return true;
+ }
+
+ // Update the URL in urlTextBox when the page starts to load.
+ @Override
+ public void onPageStarted(WebView view, String url, Bitmap favicon) {
+ urlTextBox.setText(url);
+ }
+
+ // Update formattedUrlString and urlTextBox. It is necessary to do this after the page finishes loading because the final URL can change during load.
+ @Override
+ public void onPageFinished(WebView view, String url) {
+ formattedUrlString = url;
+ urlTextBox.setText(formattedUrlString);
+ }
+ });
+
+ mainWebView.setWebChromeClient(new WebChromeClient() {
+
+ // Update the progress bar when a page is loading.
+ @Override
+ public void onProgressChanged(WebView view, int progress) {
+ progressBar.setProgress(progress);
+ if (progress < 100) {
+ progressBar.setVisibility(View.VISIBLE);
+ } else {
+ progressBar.setVisibility(View.GONE);
+
+ // Stop the refreshing indicator if it is running.
+ swipeToRefresh.setRefreshing(false);
+ }
+ }
+
+ // Set the favorite icon when it changes.
+ @Override
+ public void onReceivedIcon(WebView view, Bitmap icon) {
+ favoriteIcon.setImageBitmap(Bitmap.createScaledBitmap(icon, 64, 64, true));
+ }
+ });
+
+ // Set the "go" button on the keyboard to load the URL.
+ urlTextBox.setOnKeyListener(new View.OnKeyListener() {
+ public boolean onKey(View v, int keyCode, KeyEvent event) {
+
+ // If the event is a key-down event on the "enter" button, load the URL.
+ if ((event.getAction() == KeyEvent.ACTION_DOWN) &&
+ (keyCode == KeyEvent.KEYCODE_ENTER)) {
+ // Load the URL into the mainWebView and consume the event.
+ try {
+ loadUrlFromTextBox(mainWebView);
+ } catch (UnsupportedEncodingException e) {
+ e.printStackTrace();
+ }
+ // If the enter key was pressed, consume the event.
+ return true;
+ }
+ // If any other key was pressed, do not consume the event.
+ return false;
+ }
+ });
// Allow pinch to zoom.
mainWebView.getSettings().setBuiltInZoomControls(true);
final Intent intent = getIntent();
if (intent.getData() != null) {
- // Get the intent data.
+ // Get the intent data and convert it to a string.
final Uri intentUriData = intent.getData();
-
- // Try to parse the intent data and store it in urlData.
- URL urlData = null;
- try {
- urlData = new URL(intentUriData.getScheme(), intentUriData.getHost(), intentUriData.getPath());
- } catch (Exception e) {
- e.printStackTrace();
- }
-
- Webview.formattedUrlString = urlData.toString();
+ formattedUrlString = intentUriData.toString();
}
// If formattedUrlString is null assign the homepage to it.
formattedUrlString = homepage;
}
- // Place the formattedUrlString in the address bar and load the website.
- urlTextBox.setText(formattedUrlString);
+ // Load the initial website.
mainWebView.loadUrl(formattedUrlString);
-
- // Set the "go" button on the keyboard to load the URL.
- urlTextBox.setOnKeyListener(new View.OnKeyListener() {
- public boolean onKey(View v, int keyCode, KeyEvent event) {
- // If the event is a key-down event on the "enter" button
- if ((event.getAction() == KeyEvent.ACTION_DOWN) &&
- (keyCode == KeyEvent.KEYCODE_ENTER)) {
- // Load the URL into the mainWebView and consume the event.
- loadUrl(mainWebView);
- return true;
- }
- // Do not consume the event.
- return false;
- }
- });
-
}
@Override
@Override
public boolean onOptionsItemSelected(MenuItem menuItem) {
int menuItemId = menuItem.getItemId();
- final WebView mainWebView = (WebView) findViewById(R.id.mainWebView);
- // Use the menu items to go forward or back.
+ // Sets the commands that relate to the menu entries.
switch (menuItemId) {
+ case R.id.home:
+ mainWebView.loadUrl(homepage);
+ break;
+
case R.id.back:
mainWebView.goBack();
break;
+
case R.id.forward:
mainWebView.goForward();
break;
}
}
- public void loadUrl(View view) {
+ public void loadUrlFromTextBox(View view) throws UnsupportedEncodingException {
// Get the text from urlTextInput and convert it to a string.
- final EditText urlTextBox = (EditText) findViewById(R.id.urlTextBox);
- final String unformattedUrlString = urlTextBox.getText().toString();
-
- // Don't do anything unless unformattedUrlString is at least 6 characters long.
- if (unformattedUrlString.length() < 6) { return; }
+ String unformattedUrlString = urlTextBox.getText().toString();
+ URL unformattedUrl = null;
+ Uri.Builder formattedUri = new Uri.Builder();
- // Add correct protocol formatting to the beginning of the URL if needed.
- final String firstSixCharacters = unformattedUrlString.substring(0, 6);
+ // Check to see if unformattedUrlString is a valid URL. Otherwise, convert it into a Duck Duck Go search.
+ if (Patterns.WEB_URL.matcher(unformattedUrlString).matches()) {
- switch (firstSixCharacters) {
- case "http:/":
- formattedUrlString = unformattedUrlString;
- break;
- case "https:":
- formattedUrlString = unformattedUrlString;
- break;
- case "ftp://":
- formattedUrlString = unformattedUrlString;
- break;
- default:
- formattedUrlString = "http://" + unformattedUrlString;
- }
+ // Add http:// at the beginning if it is missing. Otherwise the app will segfault.
+ if (!unformattedUrlString.startsWith("http")) {
+ unformattedUrlString = "http://" + unformattedUrlString;
+ }
- /*
- // Parse the unformattedURLString into a Uri.
+ // Convert unformattedUrlString to a URL, then to a URI, and then back to a string, which sanitizes the input and adds in any missing components.
+ try {
+ unformattedUrl = new URL(unformattedUrlString);
+ } catch (MalformedURLException e) {
+ e.printStackTrace();
+ }
- final Uri uriData = Uri.parse(unformattedUrlString);
+ // The ternary operator (? :) makes sure that unformattedUrl.get() does not cause a null pointer exception.
+ final String scheme = unformattedUrl != null ? unformattedUrl.getProtocol() : null;
+ final String authority = unformattedUrl != null ? unformattedUrl.getAuthority() : null;
+ final String path = unformattedUrl != null ? unformattedUrl.getPath() : null;
+ final String query = unformattedUrl != null ? unformattedUrl.getQuery() : null;
+ final String fragment = unformattedUrl != null ? unformattedUrl.getRef() : null;
- // Convert the Uri to a URL, chicking for any problems with the formatting.
- URL urlData = null;
+ formattedUri.scheme(scheme).authority(authority).path(path).query(query).fragment(fragment);
+ formattedUrlString = formattedUri.build().toString();
- try {
- urlData = new URL(uriData.getScheme(), uriData.getHost(), uriData.getPath());
- } catch (Exception e) {
- e.printStackTrace();
+ } else {
+ // Sanitize the search input.
+ final String encodedUrlString = URLEncoder.encode(unformattedUrlString, "UTF-8");
+ formattedUrlString = "https://duckduckgo.com/?q=" + encodedUrlString;
}
- // Convert urlData to a string, which is reqauired by loadUrl method.
- formattedUrlString = urlData.toString();
- */
-
- final WebView mainWebView = (WebView) findViewById(R.id.mainWebView);
-
- // Place the URL text back in the address bar and load the website.
- urlTextBox.setText(formattedUrlString);
mainWebView.loadUrl(formattedUrlString);
// Hides the keyboard so we can see the webpage.
projects / PrivacyBrowserAndroid.git / blobdiff