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

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package org.fox.ttrss;
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import java.lang.reflect.Type;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import org.jsoup.Jsoup;
import android.app.Activity;
import android.app.Fragment;
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import android.content.Context;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
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import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
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import android.widget.ArrayAdapter;
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import android.widget.ListView;
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import android.widget.TextView;
import com.google.gson.Gson;
import com.google.gson.JsonArray;
import com.google.gson.JsonElement;
import com.google.gson.JsonObject;
import com.google.gson.reflect.TypeToken;
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public class HeadlinesFragment extends Fragment implements OnItemClickListener {
private final String TAG = this.getClass().getSimpleName();
protected SharedPreferences m_prefs;
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private String m_sessionId;
private int m_feedId;
private ArticleListAdapter m_adapter;
private List<Article> m_articles = new ArrayList<Article>();
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
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if (savedInstanceState != null) {
m_sessionId = savedInstanceState.getString("sessionId");
m_feedId = savedInstanceState.getInt("feedId");
}
View view = inflater.inflate(R.layout.headlines_fragment, container, false);
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ListView list = (ListView)view.findViewById(R.id.headlines);
m_adapter = new ArticleListAdapter(getActivity(), R.layout.headlines_row, (ArrayList<Article>)m_articles);
list.setAdapter(m_adapter);
list.setOnItemClickListener(this);
return view;
}
@Override
public void onAttach(Activity activity) {
super.onAttach(activity);
m_prefs = PreferenceManager.getDefaultSharedPreferences(getActivity().getApplicationContext());
}
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@Override
public void onItemClick(AdapterView<?> av, View view, int position, long id) {
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}
public void initialize(String sessionId, int feedId) {
m_sessionId = sessionId;
m_feedId = feedId;
refresh();
}
public void refresh() {
HeadlinesRequest req = new HeadlinesRequest();
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req.setApi(m_prefs.getString("ttrss_url", null));
HashMap<String,String> map = new HashMap<String,String>() {
{
put("op", "getHeadlines");
put("sid", m_sessionId);
put("feed_id", String.valueOf(m_feedId));
put("show_content", "true");
put("limit", String.valueOf(30));
put("offset", String.valueOf(0));
put("view_mode", "adaptive");
}
};
req.execute(map);
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}
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@Override
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public void onSaveInstanceState (Bundle out) {
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super.onSaveInstanceState(out);
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out.putString("sessionId", m_sessionId);
out.putInt("feedId", m_feedId);
}
private class HeadlinesRequest extends ApiRequest {
protected void onPostExecute(JsonElement result) {
if (result != null) {
try {
JsonObject rv = result.getAsJsonObject();
Gson gson = new Gson();
int status = rv.get("status").getAsInt();
if (status == 0) {
JsonArray content = rv.get("content").getAsJsonArray();
if (content != null) {
Type listType = new TypeToken<List<Article>>() {}.getType();
final List<Article> articles = gson.fromJson(content, listType);
getActivity().runOnUiThread(new Runnable() {
public void run() {
m_articles.clear();
for (Article f : articles)
m_articles.add(f);
m_adapter.notifyDataSetInvalidated();
View v = getView().findViewById(R.id.loading_container);
v.setVisibility(View.GONE);
}
});
}
} else {
JsonObject content = rv.get("content").getAsJsonObject();
if (content != null) {
String error = content.get("error").getAsString();
/* m_sessionId = null;
if (error.equals("LOGIN_ERROR")) {
setLoadingStatus(R.string.login_wrong_password, false);
} else if (error.equals("API_DISABLED")) {
setLoadingStatus(R.string.login_api_disabled, false);
} else {
setLoadingStatus(R.string.login_failed, false);
} */
// TODO report error back to MainActivity
}
}
} catch (Exception e) {
e.printStackTrace();
MainActivity ma = (MainActivity)getActivity();
ma.toast("Error parsing headlines: incorrect format");
}
} else {
MainActivity ma = (MainActivity)getActivity();
ma.toast("Error parsing headlines: null object.");
}
return;
}
}
private class ArticleListAdapter extends ArrayAdapter<Article> {
private ArrayList<Article> items;
public ArticleListAdapter(Context context, int textViewResourceId, ArrayList<Article> items) {
super(context, textViewResourceId, items);
this.items = items;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
View v = convertView;
Article article = items.get(position);
if (v == null) {
LayoutInflater vi = (LayoutInflater)getActivity().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
v = vi.inflate(R.layout.headlines_row, null);
}
TextView tt = (TextView) v.findViewById(R.id.title);
if (tt != null) {
tt.setText(article.title);
//tt.setTextAppearance(getContext(), R.style.Connection);
}
TextView te = (TextView) v.findViewById(R.id.excerpt);
if (te != null) {
String excerpt = Jsoup.parse(article.content).text();
if (excerpt.length() > 250)
excerpt = excerpt.substring(0, 250) + "...";
te.setText(excerpt);
}
return v;
}
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}
}