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/* 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.reader;
import org.mozilla.gecko.AboutPages;
import org.mozilla.gecko.util.StringUtils;
import android.net.Uri;
public class ReaderModeUtils {
private static final String LOGTAG = "ReaderModeUtils";
/**
* Extract the URL from a valid about:reader URL. You may want to use stripAboutReaderUrl
* instead to always obtain a valid String.
*
* @see #stripAboutReaderUrl(String) for a safer version that returns the original URL for malformed/invalid
* URLs.
* @return <code>null</code> if the URL is malformed or doesn't contain a URL parameter.
*/
private static String getUrlFromAboutReader(String aboutReaderUrl) {
return StringUtils.getQueryParameter(aboutReaderUrl, "url");
}
public static boolean isEnteringReaderMode(String oldURL, String newURL) {
if (oldURL == null || newURL == null) {
return false;
}
if (!AboutPages.isAboutReader(newURL)) {
return false;
}
String urlFromAboutReader = getUrlFromAboutReader(newURL);
if (urlFromAboutReader == null) {
return false;
}
return urlFromAboutReader.equals(oldURL);
}
public static String getAboutReaderForUrl(String url) {
return getAboutReaderForUrl(url, -1);
}
/**
* Obtain the underlying URL from an about:reader URL.
* This will return the input URL if either of the following is true:
* 1. the input URL is a non about:reader URL
* 2. the input URL is an invalid/unparseable about:reader URL
*/
public static String stripAboutReaderUrl(String url) {
if (!AboutPages.isAboutReader(url)) {
return url;
}
final String strippedUrl = getUrlFromAboutReader(url);
return strippedUrl != null ? strippedUrl : url;
}
public static String getAboutReaderForUrl(String url, int tabId) {
String aboutReaderUrl = AboutPages.READER + "?url=" + Uri.encode(url);
if (tabId >= 0) {
aboutReaderUrl += "&tabId=" + tabId;
}
return aboutReaderUrl;
}
}
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