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

388 lines
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Java
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package org.fox.ttrss;
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import java.lang.reflect.Type;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
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import java.util.ArrayList;
import java.util.Date;
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import java.util.HashMap;
import java.util.List;
import java.util.TimeZone;
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import org.jsoup.Jsoup;
import android.app.Activity;
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import android.content.Context;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.os.Parcel;
import android.os.Parcelable;
import android.preference.PreferenceManager;
import android.support.v4.app.Fragment;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
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;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.CompoundButton.OnCheckedChangeListener;
import android.widget.ImageView;
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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();
private SharedPreferences m_prefs;
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private Feed m_feed;
private int m_selectedArticleId;
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private ArticleListAdapter m_adapter;
private ArticleList m_articles = new ArticleList();
private ArticleList m_selectedArticles = new ArticleList();
private OnArticleSelectedListener m_articleSelectedListener;
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public interface OnArticleSelectedListener {
public void onArticleSelected(Article article);
}
private class ArticleList extends ArrayList<Article> implements Parcelable {
@Override
public int describeContents() {
return 0;
}
@Override
public void writeToParcel(Parcel out, int flags) {
out.writeInt(this.size());
for (Article article : this) {
out.writeParcelable(article, flags);
}
}
public void readFromParcel(Parcel in) {
int length = in.readInt();
for (int i = 0; i < length; i++) {
Article article = in.readParcelable(Article.class.getClassLoader());
this.add(article);
}
}
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
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if (savedInstanceState != null) {
m_feed = savedInstanceState.getParcelable("feed");
m_articles = savedInstanceState.getParcelable("articles");
m_selectedArticleId = savedInstanceState.getInt("selectedArticleId");
m_selectedArticles = savedInstanceState.getParcelable("selectedArticles");
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}
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);
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Log.d(TAG, "onCreateView, feed=" + m_feed);
if (m_feed != null && (m_articles == null || m_articles.size() == 0))
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refresh();
else
view.findViewById(R.id.loading_container).setVisibility(View.GONE);
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return view;
}
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public void showLoading(boolean show) {
View v = getView();
if (v != null) {
v = v.findViewById(R.id.loading_container);
if (v != null)
v.setVisibility(show ? View.VISIBLE : View.GONE);
}
}
@Override
public void onAttach(Activity activity) {
super.onAttach(activity);
m_prefs = PreferenceManager.getDefaultSharedPreferences(getActivity().getApplicationContext());
m_feed = ((MainActivity)activity).getActiveFeed();
m_articleSelectedListener = (OnArticleSelectedListener) activity;
}
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@Override
public void onItemClick(AdapterView<?> av, View view, int position, long id) {
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ListView list = (ListView)av;
if (list != null) {
Article article = (Article)list.getItemAtPosition(position);
m_articleSelectedListener.onArticleSelected(article);
article.unread = false;
m_selectedArticleId = article.id;
m_adapter.notifyDataSetChanged();
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catchupArticle(article);
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}
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}
public void refresh() {
HeadlinesRequest req = new HeadlinesRequest();
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req.setApi(m_prefs.getString("ttrss_url", null));
final String sessionId = ((MainActivity)getActivity()).getSessionId();
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HashMap<String,String> map = new HashMap<String,String>() {
{
put("op", "getHeadlines");
put("sid", sessionId);
put("feed_id", String.valueOf(m_feed.id));
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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);
out.putParcelable("feed", m_feed);
out.putParcelable("articles", m_articles);
out.putInt("selectedArticleId", m_selectedArticleId);
out.putParcelable("selectedArticles", m_selectedArticles);
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}
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();
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showLoading(false);
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}
});
}
} else {
MainActivity activity = (MainActivity)getActivity();
activity.login();
showLoading(false);
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}
} catch (Exception e) {
e.printStackTrace();
// report invalid object
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}
} else {
// report null object
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}
return;
}
}
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public void catchupArticle(final Article article) {
ApiRequest ar = new ApiRequest();
ar.setApi(m_prefs.getString("ttrss_url", null));
final String sessionId = ((MainActivity)getActivity()).getSessionId();
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HashMap<String,String> map = new HashMap<String,String>() {
{
put("sid", sessionId);
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put("op", "updateArticle");
put("article_ids", String.valueOf(article.id));
put("mode", "0");
put("field", "2");
}
};
ar.execute(map);
}
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public void setArticleMarked(final Article article) {
ApiRequest ar = new ApiRequest();
ar.setApi(m_prefs.getString("ttrss_url", null));
final String sessionId = ((MainActivity)getActivity()).getSessionId();
HashMap<String,String> map = new HashMap<String,String>() {
{
put("sid", sessionId);
put("op", "updateArticle");
put("article_ids", String.valueOf(article.id));
put("mode", article.marked ? "1" : "0");
put("field", "0");
}
};
ar.execute(map);
}
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private class ArticleListAdapter extends ArrayAdapter<Article> {
private ArrayList<Article> items;
public static final int VIEW_NORMAL = 0;
public static final int VIEW_UNREAD = 1;
public static final int VIEW_SELECTED = 2;
public static final int VIEW_COUNT = VIEW_SELECTED+1;
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public ArticleListAdapter(Context context, int textViewResourceId, ArrayList<Article> items) {
super(context, textViewResourceId, items);
this.items = items;
}
public int getViewTypeCount() {
return VIEW_COUNT;
}
@Override
public int getItemViewType(int position) {
Article a = items.get(position);
if (a.id == m_selectedArticleId) {
return VIEW_SELECTED;
} else if (a.unread) {
return VIEW_UNREAD;
} else {
return VIEW_NORMAL;
}
}
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@Override
public View getView(int position, View convertView, ViewGroup parent) {
View v = convertView;
final Article article = items.get(position);
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if (v == null) {
int layoutId = R.layout.headlines_row;
switch (getItemViewType(position)) {
case VIEW_UNREAD:
layoutId = R.layout.headlines_row_unread;
break;
case VIEW_SELECTED:
layoutId = R.layout.headlines_row_selected;
break;
}
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LayoutInflater vi = (LayoutInflater)getActivity().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
v = vi.inflate(layoutId, null);
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}
TextView tt = (TextView)v.findViewById(R.id.title);
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if (tt != null) {
tt.setText(article.title);
}
ImageView marked = (ImageView)v.findViewById(R.id.marked);
if (marked != null) {
marked.setImageResource(article.marked ? android.R.drawable.star_on : android.R.drawable.star_off);
marked.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
article.marked = !article.marked;
m_adapter.notifyDataSetChanged();
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setArticleMarked(article);
}
});
}
TextView te = (TextView)v.findViewById(R.id.excerpt);
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if (te != null) {
String excerpt = Jsoup.parse(article.content).text();
if (excerpt.length() > 250)
excerpt = excerpt.substring(0, 100) + "...";
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te.setText(excerpt);
}
TextView dv = (TextView) v.findViewById(R.id.date);
if (dv != null) {
Date d = new Date((long)article.updated * 1000);
DateFormat df = new SimpleDateFormat("MMM dd, HH:mm");
df.setTimeZone(TimeZone.getDefault());
dv.setText(df.format(d));
}
CheckBox cb = (CheckBox) v.findViewById(R.id.selected);
if (cb != null) {
cb.setChecked(m_selectedArticles.contains(article));
cb.setOnCheckedChangeListener(new OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView,
boolean isChecked) {
if (isChecked) {
m_selectedArticles.add(article);
} else {
m_selectedArticles.remove(article);
}
Log.d(TAG, "num selected: " + m_selectedArticles.size());
}
});
}
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return v;
}
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}
}