tt-rss-android/src/org/fox/ttrss/FeedsFragment.java

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Java
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package org.fox.ttrss;
import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.lang.reflect.Type;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.HashMap;
import java.util.List;
import org.fox.ttrss.types.Feed;
import org.fox.ttrss.types.FeedCategory;
import org.fox.ttrss.types.FeedList;
import android.app.Activity;
import android.content.Context;
import android.content.SharedPreferences;
import android.content.SharedPreferences.OnSharedPreferenceChangeListener;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.net.http.AndroidHttpClient;
import android.os.AsyncTask;
import android.os.Bundle;
import android.os.Environment;
import android.preference.PreferenceManager;
import android.support.v4.app.Fragment;
import android.util.Base64;
import android.util.Log;
import android.view.ContextMenu;
import android.view.ContextMenu.ContextMenuInfo;
import android.view.LayoutInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.AdapterContextMenuInfo;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.TextView;
import com.google.gson.Gson;
import com.google.gson.JsonArray;
import com.google.gson.JsonElement;
import com.google.gson.reflect.TypeToken;
public class FeedsFragment extends Fragment implements OnItemClickListener, OnSharedPreferenceChangeListener {
private final String TAG = this.getClass().getSimpleName();
private SharedPreferences m_prefs;
private FeedListAdapter m_adapter;
private FeedList m_feeds = new FeedList();
private FeedsActivity m_activity;
private Feed m_selectedFeed;
private FeedCategory m_activeCategory;
private static final String ICON_PATH = "/icons/";
private boolean m_enableFeedIcons;
private boolean m_feedIconsChecked = false;
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public void initialize(FeedCategory cat) {
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m_activeCategory = cat;
}
class FeedUnreadComparator implements Comparator<Feed> {
@Override
public int compare(Feed a, Feed b) {
if (a.unread != b.unread)
return b.unread - a.unread;
else
return a.title.compareTo(b.title);
}
}
class FeedTitleComparator implements Comparator<Feed> {
@Override
public int compare(Feed a, Feed b) {
if (a.is_cat && b.is_cat)
return a.title.compareTo(b.title);
else if (a.is_cat && !b.is_cat)
return -1;
else if (!a.is_cat && b.is_cat)
return 1;
else if (a.id >= 0 && b.id >= 0)
return a.title.compareTo(b.title);
else
return a.id - b.id;
}
}
class FeedOrderComparator implements Comparator<Feed> {
@Override
public int compare(Feed a, Feed b) {
if (a.id >= 0 && b.id >= 0)
if (a.is_cat && b.is_cat)
return a.title.compareTo(b.title);
else if (a.is_cat && !b.is_cat)
return -1;
else if (!a.is_cat && b.is_cat)
return 1;
else if (a.order_id != 0 && b.order_id != 0)
return a.order_id - b.order_id;
else
return a.title.compareTo(b.title);
else
return a.id - b.id;
}
}
@Override
public boolean onContextItemSelected(MenuItem item) {
AdapterContextMenuInfo info = (AdapterContextMenuInfo) item
.getMenuInfo();
switch (item.getItemId()) {
case R.id.browse_articles:
if (true) {
Feed feed = getFeedAtPosition(info.position);
if (feed != null) {
m_activity.openFeedArticles(feed);
}
}
return true;
case R.id.browse_headlines:
if (true) {
Feed feed = getFeedAtPosition(info.position);
if (feed != null) {
m_activity.onFeedSelected(feed);
}
}
return true;
case R.id.browse_feeds:
if (true) {
Feed feed = getFeedAtPosition(info.position);
if (feed != null) {
m_activity.onCatSelected(new FeedCategory(feed.id, feed.title, feed.unread), false);
}
}
return true;
case R.id.catchup_feed:
if (true) {
Feed feed = getFeedAtPosition(info.position);
if (feed != null) {
m_activity.catchupFeed(feed);
}
}
return true;
default:
Log.d(TAG, "onContextItemSelected, unhandled id=" + item.getItemId());
return super.onContextItemSelected(item);
}
}
@Override
public void onCreateContextMenu(ContextMenu menu, View v,
ContextMenuInfo menuInfo) {
getActivity().getMenuInflater().inflate(R.menu.feed_menu, menu);
AdapterContextMenuInfo info = (AdapterContextMenuInfo) menuInfo;
Feed feed = m_adapter.getItem(info.position);
if (feed != null)
menu.setHeaderTitle(feed.title);
if (!m_activity.isSmallScreen()) {
menu.findItem(R.id.browse_articles).setVisible(false);
}
if (!feed.is_cat) {
menu.findItem(R.id.browse_feeds).setVisible(false);
}
super.onCreateContextMenu(menu, v, menuInfo);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
if (savedInstanceState != null) {
m_selectedFeed = savedInstanceState.getParcelable("selectedFeed");
m_feeds = savedInstanceState.getParcelable("feeds");
m_feedIconsChecked = savedInstanceState.getBoolean("feedIconsChecked");
m_activeCategory = savedInstanceState.getParcelable("activeCat");
}
View view = inflater.inflate(R.layout.feeds_fragment, container, false);
ListView list = (ListView)view.findViewById(R.id.feeds);
m_adapter = new FeedListAdapter(getActivity(), R.layout.feeds_row, (ArrayList<Feed>)m_feeds);
list.setAdapter(m_adapter);
//list.setEmptyView(view.findViewById(R.id.no_feeds));
list.setOnItemClickListener(this);
registerForContextMenu(list);
m_enableFeedIcons = m_prefs.getBoolean("download_feed_icons", false);
return view;
}
@Override
public void onDestroy() {
super.onDestroy();
}
@Override
public void onAttach(Activity activity) {
super.onAttach(activity);
m_prefs = PreferenceManager.getDefaultSharedPreferences(getActivity().getApplicationContext());
m_prefs.registerOnSharedPreferenceChangeListener(this);
m_activity = (FeedsActivity)activity;
}
@Override
public void onResume() {
super.onResume();
refresh(false);
m_activity.initMenu();
}
@Override
public void onSaveInstanceState (Bundle out) {
super.onSaveInstanceState(out);
out.putParcelable("selectedFeed", m_selectedFeed);
out.putParcelable("feeds", m_feeds);
out.putBoolean("feedIconsChecked", m_feedIconsChecked);
out.putParcelable("activeCat", m_activeCategory);
}
@Override
public void onItemClick(AdapterView<?> av, View view, int position, long id) {
ListView list = (ListView)av;
if (list != null) {
Feed feed = (Feed)list.getItemAtPosition(position);
if (feed.is_cat) {
if (m_activity.isSmallScreen() && "ARTICLES".equals(m_prefs.getString("default_view_mode", "HEADLINES")) &&
m_prefs.getBoolean("browse_cats_like_feeds", false)) {
m_activity.openFeedArticles(feed);
} else {
m_activity.onCatSelected(new FeedCategory(feed.id, feed.title, feed.unread));
}
} else {
if ("ARTICLES".equals(m_prefs.getString("default_view_mode", "HEADLINES"))) {
m_activity.openFeedArticles(feed);
} else {
m_activity.onFeedSelected(feed);
}
}
if (!m_activity.isSmallScreen())
m_selectedFeed = feed;
m_adapter.notifyDataSetChanged();
}
}
@SuppressWarnings({ "unchecked", "serial" })
public void refresh(boolean background) {
//FeedCategory cat = m_onlineServices.getActiveCategory();
m_activity.setProgressBarVisibility(true);
final int catId = (m_activeCategory != null) ? m_activeCategory.id : -4;
final String sessionId = m_activity.getSessionId();
final boolean unreadOnly = m_activity.getUnreadOnly();
FeedsRequest req = new FeedsRequest(getActivity().getApplicationContext(), catId);
if (sessionId != null) {
m_activity.setLoadingStatus(R.string.blank, true);
HashMap<String,String> map = new HashMap<String,String>() {
{
put("op", "getFeeds");
put("sid", sessionId);
put("include_nested", "true");
put("cat_id", String.valueOf(catId));
if (unreadOnly) {
put("unread_only", String.valueOf(unreadOnly));
}
}
};
req.execute(map);
}
}
/* private void setLoadingStatus(int status, boolean showProgress) {
if (getView() != null) {
TextView tv = (TextView)getView().findViewById(R.id.loading_message);
if (tv != null) {
tv.setText(status);
}
}
if (getActivity() != null)
getActivity().setProgressBarIndeterminateVisibility(showProgress);
} */
@SuppressWarnings({ "unchecked", "serial" })
public void getFeedIcons() {
ApiRequest req = new ApiRequest(getActivity().getApplicationContext()) {
protected void onPostExecute(JsonElement result) {
if (isDetached()) return;
if (result != null) {
try {
JsonElement iconsUrl = result.getAsJsonObject().get("icons_dir");
if (iconsUrl != null) {
String iconsStr = iconsUrl.getAsString();
String baseUrl = "";
if (!iconsStr.contains("://")) {
baseUrl = m_prefs.getString("ttrss_url", "") + "/" + iconsStr;
} else {
baseUrl = iconsStr;
}
GetIconsTask git = new GetIconsTask(baseUrl);
git.execute(m_feeds);
m_feedIconsChecked = true;
}
} catch (Exception e) {
Log.d(TAG, "Error receiving icons configuration");
e.printStackTrace();
}
}
}
};
final String sessionId = m_activity.getSessionId();
HashMap<String,String> map = new HashMap<String,String>() {
{
put("sid", sessionId);
put("op", "getConfig");
}
};
req.execute(map);
}
private class FeedsRequest extends ApiRequest {
private int m_catId;
public FeedsRequest(Context context, int catId) {
super(context);
m_catId = catId;
}
@Override
protected void onProgressUpdate(Integer... progress) {
m_activity.setProgress(Math.round((((float)progress[0] / (float)progress[1]) * 10000)));
}
@Override
protected void onPostExecute(JsonElement result) {
if (isDetached()) return;
if (getView() != null) {
ListView list = (ListView)getView().findViewById(R.id.feeds);
if (list != null) {
list.setEmptyView(getView().findViewById(R.id.no_feeds));
}
}
m_activity.setProgressBarVisibility(false);
if (result != null) {
try {
JsonArray content = result.getAsJsonArray();
if (content != null) {
Type listType = new TypeToken<List<Feed>>() {}.getType();
final List<Feed> feeds = new Gson().fromJson(content, listType);
m_feeds.clear();
for (Feed f : feeds)
if (f.id > -10 || m_catId != -4) // skip labels for flat feedlist for now
m_feeds.add(f);
sortFeeds();
/*if (m_feeds.size() == 0)
setLoadingStatus(R.string.no_feeds_to_display, false);
else */
m_activity.setLoadingStatus(R.string.blank, false);
//m_adapter.notifyDataSetChanged(); (done by sortFeeds)
if (m_enableFeedIcons && !m_feedIconsChecked &&
Environment.MEDIA_MOUNTED.equals(Environment.getExternalStorageState()))
getFeedIcons();
return;
}
} catch (Exception e) {
e.printStackTrace();
}
}
if (m_lastError == ApiError.LOGIN_FAILED) {
m_activity.login(true);
} else {
m_activity.setLoadingStatus(getErrorMessage(), false);
}
}
}
private class FeedListAdapter extends ArrayAdapter<Feed> {
private ArrayList<Feed> items;
public static final int VIEW_NORMAL = 0;
public static final int VIEW_SELECTED = 1;
public static final int VIEW_COUNT = VIEW_SELECTED+1;
public FeedListAdapter(Context context, int textViewResourceId, ArrayList<Feed> items) {
super(context, textViewResourceId, items);
this.items = items;
}
public int getViewTypeCount() {
return VIEW_COUNT;
}
@Override
public int getItemViewType(int position) {
Feed feed = items.get(position);
if (!m_activity.isSmallScreen() && m_selectedFeed != null && feed.id == m_selectedFeed.id) {
return VIEW_SELECTED;
} else {
return VIEW_NORMAL;
}
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
View v = convertView;
Feed feed = items.get(position);
if (v == null) {
int layoutId = R.layout.feeds_row;
switch (getItemViewType(position)) {
case VIEW_SELECTED:
layoutId = R.layout.feeds_row_selected;
break;
}
LayoutInflater vi = (LayoutInflater)getActivity().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
v = vi.inflate(layoutId, null);
}
TextView tt = (TextView) v.findViewById(R.id.title);
if (tt != null) {
tt.setText(feed.title);
}
TextView tu = (TextView) v.findViewById(R.id.unread_counter);
if (tu != null) {
tu.setText(String.valueOf(feed.unread));
tu.setVisibility((feed.unread > 0) ? View.VISIBLE : View.INVISIBLE);
}
ImageView icon = (ImageView)v.findViewById(R.id.icon);
if (icon != null) {
if (m_enableFeedIcons) {
File storage = m_activity.getExternalCacheDir();
File iconFile = new File(storage.getAbsolutePath() + ICON_PATH + feed.id + ".ico");
if (iconFile.exists()) {
Bitmap bmpOrig = BitmapFactory.decodeFile(iconFile.getAbsolutePath());
if (bmpOrig != null) {
icon.setImageBitmap(bmpOrig);
}
} else {
icon.setImageResource(feed.unread > 0 ? R.drawable.ic_rss : R.drawable.ic_rss_bw);
}
} else {
icon.setImageResource(feed.unread > 0 ? R.drawable.ic_rss : R.drawable.ic_rss_bw);
}
}
return v;
}
}
public void sortFeeds() {
Comparator<Feed> cmp;
if (m_prefs.getBoolean("sort_feeds_by_unread", false)) {
cmp = new FeedUnreadComparator();
} else {
if (m_activity.getApiLevel() >= 3) {
cmp = new FeedOrderComparator();
} else {
cmp = new FeedTitleComparator();
}
}
Collections.sort(m_feeds, cmp);
try {
m_adapter.notifyDataSetChanged();
} catch (NullPointerException e) {
// adapter missing
}
}
public class GetIconsTask extends AsyncTask<FeedList, Integer, Integer> {
private String m_baseUrl;
public GetIconsTask(String baseUrl) {
m_baseUrl = baseUrl;
}
@Override
protected Integer doInBackground(FeedList... params) {
try {
File storage = m_activity.getExternalCacheDir();
final File iconPath = new File(storage.getAbsolutePath() + ICON_PATH);
if (!iconPath.exists()) iconPath.mkdirs();
if (iconPath.exists()) {
for (Feed feed : params[0]) {
if (feed.id > 0 && feed.has_icon && !feed.is_cat) {
File outputFile = new File(iconPath.getAbsolutePath() + "/" + feed.id + ".ico");
String fetchUrl = m_baseUrl + "/" + feed.id + ".ico";
if (!outputFile.exists()) {
downloadFile(fetchUrl, outputFile.getAbsolutePath());
Thread.sleep(2000);
}
}
}
}
} catch (Exception e) {
Log.d(TAG, "Error while downloading feed icons");
e.printStackTrace();
}
return null;
}
protected void downloadFile(String fetchUrl, String outputFile) {
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AndroidHttpClient client = AndroidHttpClient.newInstance("Tiny Tiny RSS");
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/* ApiRequest.disableConnectionReuseIfNecessary(); */
/* ApiRequest.trustAllHosts(m_prefs.getBoolean("ssl_trust_any", false),
m_prefs.getBoolean("ssl_trust_any_host", false)); */
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try {
URL url = new URL(fetchUrl);
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
String httpLogin = m_prefs.getString("http_login", "");
String httpPassword = m_prefs.getString("http_password", "");
if (httpLogin.length() > 0) {
conn.setRequestProperty("Authorization", "Basic " +
Base64.encodeToString((httpLogin + ":" + httpPassword).getBytes("UTF-8"), Base64.NO_WRAP));
}
InputStream content = conn.getInputStream();
BufferedInputStream is = new BufferedInputStream(content, 1024);
FileOutputStream fos = new FileOutputStream(outputFile);
byte[] buffer = new byte[1024];
int len = 0;
while ((len = is.read(buffer)) != -1) {
fos.write(buffer, 0, len);
}
fos.close();
is.close();
} catch (Exception e) {
e.printStackTrace();
}
client.close();
}
protected void onPostExecute(Integer result) {
if (isDetached()) return;
m_adapter.notifyDataSetChanged();
}
}
@Override
public void onSharedPreferenceChanged(SharedPreferences sharedPreferences,
String key) {
sortFeeds();
m_enableFeedIcons = m_prefs.getBoolean("download_feed_icons", false);
}
public Feed getFeedAtPosition(int position) {
try {
return m_adapter.getItem(position);
} catch (IndexOutOfBoundsException e) {
return null;
}
}
public Feed getSelectedFeed() {
return m_selectedFeed;
}
public void setSelectedFeed(Feed feed) {
m_selectedFeed = feed;
m_adapter.notifyDataSetChanged();
}
}