The Tor Browser / file revision

 /* This Source Code Form is subject to the terms of the Mozilla Public

  * License, v. 2.0. If a copy of the MPL was not distributed with this

  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

 package org.mozilla.gecko.sync.setup.activities;

 import java.util.Locale;

 import org.mozilla.gecko.background.common.GlobalConstants;

 import org.mozilla.gecko.background.common.log.Logger;

 import org.mozilla.gecko.sync.SyncConstants;

 import org.mozilla.gecko.sync.setup.InvalidSyncKeyException;

 import android.content.Context;

 import android.content.Intent;

 import android.net.Uri;

 import android.text.Html;

 import android.text.SpannableString;

 import android.text.Spanned;

 import android.text.TextPaint;

 import android.text.method.LinkMovementMethod;

 import android.text.style.ClickableSpan;

 import android.text.style.URLSpan;

 import android.view.View;

 import android.widget.TextView;

 public class ActivityUtils {

   private static final String LOG_TAG = "ActivityUtils";

   public static void prepareLogging() {

     Logger.setThreadLogTag(SyncConstants.GLOBAL_LOG_TAG);

   }

   /**

    * Sync key should be a 26-character string, and can include arbitrary

    * capitalization and hyphenation.

    *

    * @param key

    *          Sync key entered by user in account setup.

    * @return Sync key in correct format (lower-case, no hyphens).

    * @throws InvalidSyncKeyException

    */

   public static String validateSyncKey(String key) throws InvalidSyncKeyException {

     String charKey = key.trim().replace("-", "").toLowerCase(Locale.US);

     if (!charKey.matches("^[abcdefghijkmnpqrstuvwxyz23456789]{26}$")) {

       throw new InvalidSyncKeyException();

     }

     return charKey;

   }

   /**

    * Open a URL in Fennec, if one is provided; or just open Fennec.

    *

    * @param context Android context.

    * @param url to visit, or null to just open Fennec.

    */

   public static void openURLInFennec(final Context context, final String url) {

     Intent intent;

     if (url != null) {

       intent = new Intent(Intent.ACTION_VIEW);

       intent.setData(Uri.parse(url));

     } else {

       intent = new Intent(Intent.ACTION_MAIN);

     }

     intent.setClassName(GlobalConstants.BROWSER_INTENT_PACKAGE, GlobalConstants.BROWSER_INTENT_CLASS);

     intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

     context.startActivity(intent);

   }

   /**

    * Open a clicked span in Fennec with the provided URL.

    */

   public static class FennecClickableSpan extends ClickableSpan {

     private final String url;

     private final boolean underlining;

     public FennecClickableSpan(final String url, boolean underlining) {

       this.url = url;

       this.underlining = underlining;

     }

     @Override

     public void updateDrawState(TextPaint ds) {

       super.updateDrawState(ds);

       if (!this.underlining) {

         ds.setUnderlineText(false);

       }

     }

     @Override

     public void onClick(View widget) {

       openURLInFennec(widget.getContext(), this.url);

     }

   }

   /**

    * Replace the contents of a plain text view with the provided text wrapped in a link.

    * TODO: escape the URL!

    */

   public static void linkTextView(TextView view, int text, int link) {

     final Context context = view.getContext();

     linkTextView(view, context.getString(text), context.getString(link));

   }

   /**

    * Replace the contents of a plain text view with the provided text wrapped in a link.

    * TODO: escape the URL!

    */

   public static void linkTextView(TextView view, String text, String url) {

     view.setText("<a href=\"" + url + "\">" + text + "</a>");

     linkifyTextView(view, false);

   }

   public static void linkifyTextView(TextView textView, boolean underlining) {

     if (textView == null) {

       Logger.warn(LOG_TAG, "Could not process links for view.");

       return;

     }

     textView.setMovementMethod(LinkMovementMethod.getInstance());

     // Create spans.

     final Spanned spanned = Html.fromHtml(textView.getText().toString());

     // Replace the spans with Fennec-launching links.

     SpannableString replaced = new SpannableString(spanned);

     URLSpan[] spans = replaced.getSpans(0, replaced.length(), URLSpan.class);

     for (URLSpan span : spans) {

       final int start = replaced.getSpanStart(span);

       final int end = replaced.getSpanEnd(span);

       final int flags = replaced.getSpanFlags(span);

       replaced.removeSpan(span);

       replaced.setSpan(new FennecClickableSpan(span.getURL(), underlining), start, end, flags);

     }

     textView.setText(replaced);

   }

 }