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

384 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.os.Bundle;
import android.support.v4.app.Fragment;
import android.text.Html;
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();
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private Feed m_feed;
private int m_activeArticleId;
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private ArticleListAdapter m_adapter;
private ArticleList m_articles = new ArticleList();
private ArticleList m_selectedArticles = new ArticleList();
private ArticleOps m_articleOps;
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public ArticleList getSelectedArticles() {
return m_selectedArticles;
}
@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_activeArticleId = savedInstanceState.getInt("activeArticleId");
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);
Log.d(TAG, "onCreateView, feed=" + m_feed);
if (m_feed != null && (m_articles == null || m_articles.size() == 0))
refresh(false);
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else
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view.findViewById(R.id.loading_progress).setVisibility(View.GONE);
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return view;
}
@Override
public void onAttach(Activity activity) {
super.onAttach(activity);
m_feed = ((MainActivity)activity).getActiveFeed();
m_articleOps = (ArticleOps) 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_articleOps.onArticleOpened(article);
if (article.unread) {
article.unread = false;
m_articleOps.saveArticleUnread(article);
}
m_activeArticleId = article.id;
m_adapter.notifyDataSetChanged();
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}
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}
@SuppressWarnings({ "unchecked", "serial" })
public void refresh(boolean append) {
HeadlinesRequest req = new HeadlinesRequest(getActivity().getApplicationContext());
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final String sessionId = ((MainActivity)getActivity()).getSessionId();
final boolean showUnread = ((MainActivity)getActivity()).getUnreadArticlesOnly();
int skip = 0;
if (append) {
for (Article a : m_articles) {
if (a.unread) ++skip;
}
if (skip == 0) skip = m_articles.size();
}
final int fskip = skip;
req.setOffset(skip);
setLoadingStatus(R.string.blank, true);
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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", showUnread ? "adaptive" : "all_articles");
put("skip", String.valueOf(fskip));
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}
};
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("activeArticleId", m_activeArticleId);
out.putParcelable("selectedArticles", m_selectedArticles);
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}
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public void setLoadingStatus(int status, boolean showProgress) {
if (getView() != null) {
TextView tv = (TextView)getView().findViewById(R.id.loading_message);
if (tv != null) {
tv.setText(status);
}
View pb = getView().findViewById(R.id.loading_progress);
if (pb != null) {
pb.setVisibility(showProgress ? View.VISIBLE : View.GONE);
}
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}
}
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private class HeadlinesRequest extends ApiRequest {
int m_offset = 0;
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public HeadlinesRequest(Context context) {
super(context);
}
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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);
if (m_offset == 0)
m_articles.clear();
int last_position = m_articles.size();
for (Article f : articles)
m_articles.add(f);
m_adapter.notifyDataSetChanged();
ListView list = (ListView)getView().findViewById(R.id.headlines);
if (list != null && m_offset != 0) {
list.setSelection(last_position+1);
}
MainActivity activity = (MainActivity)getActivity();
activity.setCanLoadMore(articles.size() >= 30);
activity.initMainMenu();
setLoadingStatus(R.string.blank, false);
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}
} else {
MainActivity activity = (MainActivity)getActivity();
activity.login();
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}
} catch (Exception e) {
e.printStackTrace();
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setLoadingStatus(R.string.error_invalid_object, false);
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}
} else {
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setLoadingStatus(R.string.error_no_data, false);
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}
return;
}
public void setOffset(int skip) {
m_offset = skip;
}
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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_activeArticleId) {
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(Html.fromHtml(article.title));
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}
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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m_articleOps.saveArticleMarked(article);
}
});
}
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ImageView published = (ImageView)v.findViewById(R.id.published);
if (published != null) {
published.setImageResource(article.published ? R.drawable.ic_rss : R.drawable.ic_rss_bw);
published.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
article.published = !article.published;
m_adapter.notifyDataSetChanged();
m_articleOps.saveArticlePublished(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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}
public void notifyUpdated() {
m_adapter.notifyDataSetChanged();
}
}