add WikipediaArticleHelper for search wikipedia articles
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Chumva
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296
OsmAnd/src/net/osmand/plus/wikipedia/WikipediaArticleHelper.java
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296
OsmAnd/src/net/osmand/plus/wikipedia/WikipediaArticleHelper.java
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package net.osmand.plus.wikipedia;
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import android.app.AlertDialog;
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import android.app.ProgressDialog;
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import android.content.Context;
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import android.content.DialogInterface;
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import android.net.Uri;
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import android.os.AsyncTask;
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import android.support.annotation.NonNull;
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import android.support.v4.app.FragmentActivity;
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import android.support.v4.app.FragmentManager;
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import android.util.Log;
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import net.osmand.IndexConstants;
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import net.osmand.data.Amenity;
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import net.osmand.data.LatLon;
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import net.osmand.map.OsmandRegions;
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import net.osmand.plus.OsmandApplication;
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import net.osmand.plus.R;
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import net.osmand.plus.activities.MapActivity;
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import net.osmand.plus.download.DownloadActivityType;
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import net.osmand.plus.download.DownloadResources;
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import net.osmand.plus.download.IndexItem;
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import net.osmand.plus.resources.AmenityIndexRepositoryBinary;
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import net.osmand.plus.wikivoyage.article.WikivoyageArticleWikiLinkFragment;
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import net.osmand.plus.wikivoyage.data.TravelArticle;
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import java.io.IOException;
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import java.io.UnsupportedEncodingException;
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import java.lang.ref.WeakReference;
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import java.net.URLDecoder;
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import java.util.ArrayList;
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import java.util.List;
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interface RegionCallback {
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void onRegionFound(String s);
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}
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public class WikipediaArticleHelper implements RegionCallback {
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private static final String TAG = WikipediaArticleHelper.class.getSimpleName();
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private static final String ZIP_EXT = ".zip";
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private static final String PAGE_PREFIX_HTTP = "http://";
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private static final String PAGE_PREFIX_HTTPS = "https://";
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private static final String WIKIVOAYAGE_DOMAIN = ".wikivoyage.org/wiki/";
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private static final String WIKI_DOMAIN = ".wikipedia.org/wiki/";
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private WikiArticleSearchTask articleSearchTask;
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private FragmentManager fragmentManager;
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private Context context;
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private String regionName;
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private boolean nightMode;
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public WikipediaArticleHelper(FragmentActivity context, FragmentManager fm, boolean nightMode) {
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fragmentManager = fm;
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this.context = context;
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this.nightMode = nightMode;
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}
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@Override
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public void onRegionFound(String s) {
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regionName = s;
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}
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public static class WikiArticleSearchTask extends AsyncTask<Void, Void, List<Amenity>> {
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private ProgressDialog dialog;
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private RegionCallback callback;
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private String name;
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private String regionName;
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private WeakReference<MapActivity> weakContext;
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private WeakReference<OsmandApplication> applicationReference;
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private boolean isNightMode;
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private String url;
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private String lang;
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private TravelArticle travelArticle;
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private Amenity amenityArticle;
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private FragmentManager fragmentManager;
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WikiArticleSearchTask(RegionCallback callback, TravelArticle travelArticle, String articleName,
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String regionName, FragmentManager fragmentManager,
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String lang, MapActivity context, boolean nightMode, String url) {
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this.fragmentManager = fragmentManager;
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this.regionName = regionName;
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name = articleName;
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this.lang = lang;
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weakContext = new WeakReference<>(context);
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OsmandApplication app = (OsmandApplication) context.getApplication();
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applicationReference = new WeakReference<>(app);
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dialog = createProgressDialog();
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this.isNightMode = nightMode;
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this.url = url;
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this.travelArticle = travelArticle;
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this.callback = callback;
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}
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WikiArticleSearchTask(RegionCallback callback, Amenity amenityArticle, String articleName,
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String regionName, FragmentManager fragmentManager,
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String lang, MapActivity context, boolean nightMode, String url) {
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this.fragmentManager = fragmentManager;
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this.regionName = regionName;
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name = articleName;
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this.lang = lang;
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weakContext = new WeakReference<>(context);
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OsmandApplication app = (OsmandApplication) context.getApplication();
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applicationReference = new WeakReference<>(app);
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dialog = createProgressDialog();
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this.isNightMode = nightMode;
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this.url = url;
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this.amenityArticle = amenityArticle;
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this.callback = callback;
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}
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@Override
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protected void onPreExecute() {
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if (dialog != null) {
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dialog.show();
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}
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}
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@Override
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protected List<Amenity> doInBackground(Void... voids) {
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OsmandApplication application = applicationReference.get();
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List<Amenity> results = new ArrayList<>();
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if (application != null && !isCancelled()) {
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IndexItem item = null;
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try {
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if (travelArticle != null) {
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item = DownloadResources.findSmallestIndexItemAt(application,
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new LatLon(travelArticle.getLat(), travelArticle.getLon()), DownloadActivityType.WIKIPEDIA_FILE);
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} else if (amenityArticle != null) {
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item = DownloadResources.findSmallestIndexItemAt(application,
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amenityArticle.getLocation(), DownloadActivityType.WIKIPEDIA_FILE);
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}
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} catch (IOException e) {
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Log.e(TAG, e.getMessage(), e);
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}
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String filename = null;
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if (item != null && item.isDownloaded()) {
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filename = getFilenameFromIndex(item.getFileName());
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}
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AmenityIndexRepositoryBinary repository = application.getResourceManager()
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.getAmenityRepositoryByFileName(filename == null ? "" : filename);
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if (repository == null) {
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if ((regionName == null || regionName.isEmpty()) && item != null) {
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regionName = (getRegionName(item.getFileName(), application.getRegions()));
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callback.onRegionFound(regionName);
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}
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return null;
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} else {
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if (isCancelled()) {
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return null;
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}
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results.addAll(repository.searchAmenitiesByName(0, 0, 0, 0,
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Integer.MAX_VALUE, Integer.MAX_VALUE, name, null));
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}
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}
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return results;
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}
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@Override
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protected void onCancelled() {
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MapActivity activity = weakContext.get();
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if (activity != null && !activity.isActivityDestroyed() && dialog != null) {
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dialog.dismiss();
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}
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dialog = null;
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callback = null;
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}
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@Override
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protected void onPostExecute(List<Amenity> found) {
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MapActivity activity = weakContext.get();
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if (activity != null && !activity.isActivityDestroyed() && dialog != null) {
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dialog.dismiss();
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if (found == null) {
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WikivoyageArticleWikiLinkFragment.showInstance(fragmentManager, regionName == null ?
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"" : regionName, url);
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} else if (!found.isEmpty()) {
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WikipediaDialogFragment.showInstance(activity, found.get(0), lang);
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} else {
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warnAboutExternalLoad(url, weakContext.get(), isNightMode);
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}
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}
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}
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private String getFilenameFromIndex(String fileName) {
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return fileName
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.replace("_" + IndexConstants.BINARY_MAP_VERSION, "")
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.replace(ZIP_EXT, "");
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}
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private String getRegionName(String filename, OsmandRegions osmandRegions) {
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if (osmandRegions != null && filename != null) {
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String regionName = filename
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.replace("_" + IndexConstants.BINARY_MAP_VERSION, "")
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.replace(IndexConstants.BINARY_WIKI_MAP_INDEX_EXT_ZIP, "")
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.toLowerCase();
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return osmandRegions.getLocaleName(regionName, false);
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}
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return "";
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}
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private ProgressDialog createProgressDialog() {
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MapActivity activity = weakContext.get();
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if (activity != null && !activity.isActivityDestroyed()) {
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ProgressDialog dialog = new ProgressDialog(activity);
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dialog.setCancelable(false);
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dialog.setMessage(activity.getString(R.string.wiki_article_search_text));
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return dialog;
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}
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return null;
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}
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}
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public void getWikiArticle(TravelArticle article, String url) {
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if (article == null) {
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return;
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}
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String lang = getLang(url);
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String articleName = getArticleNameFromUrl(url, lang);
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articleSearchTask = new WikiArticleSearchTask(this, article, articleName, regionName, fragmentManager,
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lang, (MapActivity) context, nightMode, url);
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articleSearchTask.execute();
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}
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public void getWikiArticle(Amenity article, String url) {
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if (article == null) {
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return;
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}
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String lang = getLang(url);
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String articleName = getArticleNameFromUrl(url, lang);
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articleSearchTask = new WikiArticleSearchTask(this, article, articleName, regionName, fragmentManager,
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lang, (MapActivity) context, nightMode, url);
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articleSearchTask.execute();
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}
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@NonNull
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public String getLang(String url) {
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if (url.startsWith(PAGE_PREFIX_HTTP)) {
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return url.substring(url.startsWith(PAGE_PREFIX_HTTP) ? PAGE_PREFIX_HTTP.length() : 0, url.indexOf("."));
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} else if (url.startsWith(PAGE_PREFIX_HTTPS)) {
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return url.substring(url.startsWith(PAGE_PREFIX_HTTPS) ? PAGE_PREFIX_HTTPS.length() : 0, url.indexOf("."));
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}
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return "";
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}
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public String getArticleNameFromUrl(String url, String lang) {
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String domain = url.contains(WIKIVOAYAGE_DOMAIN) ? WIKIVOAYAGE_DOMAIN : WIKI_DOMAIN;
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String articleName = "";
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if (url.startsWith(PAGE_PREFIX_HTTP)) {
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articleName = url.replace(PAGE_PREFIX_HTTP + lang + domain, "")
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.replaceAll("_", " ");
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} else if (url.startsWith(PAGE_PREFIX_HTTPS)) {
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articleName = url.replace(PAGE_PREFIX_HTTPS + lang + domain, "")
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.replaceAll("_", " ");
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}
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try {
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articleName = URLDecoder.decode(articleName, "UTF-8");
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} catch (UnsupportedEncodingException e) {
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Log.w(TAG, e.getMessage(), e);
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}
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return articleName;
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}
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public void stopSearchAsyncTask() {
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if (articleSearchTask != null && articleSearchTask.getStatus() == AsyncTask.Status.RUNNING) {
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articleSearchTask.cancel(false);
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}
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}
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private static void warnAboutExternalLoad(final String url, final Context context, final boolean nightMode) {
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if (context == null) {
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return;
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}
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new AlertDialog.Builder(context)
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.setTitle(url)
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.setMessage(R.string.online_webpage_warning)
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.
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setPositiveButton(R.string.shared_string_ok, new DialogInterface.OnClickListener() {
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@Override
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public void onClick(DialogInterface dialog, int which) {
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WikipediaDialogFragment.showFullArticle(context, Uri.parse(url), nightMode);
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}
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})
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.setNegativeButton(R.string.shared_string_cancel, null)
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.show();
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}
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}
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