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

345 lines
8.8 KiB
Java

package org.fox.ttrss;
import java.util.HashMap;
import org.fox.ttrss.types.Article;
import org.fox.ttrss.types.ArticleList;
import org.fox.ttrss.types.Feed;
import org.fox.ttrss.util.HeadlinesRequest;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.content.SharedPreferences;
import android.os.BadParcelableException;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentStatePagerAdapter;
import android.support.v4.view.ViewPager;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.WindowManager;
import com.google.gson.JsonElement;
import com.viewpagerindicator.TitlePageIndicator;
import com.viewpagerindicator.UnderlinePageIndicator;
public class ArticlePager extends Fragment {
private final String TAG = "ArticlePager";
private PagerAdapter m_adapter;
private HeadlinesEventListener m_listener;
private Article m_article;
private ArticleList m_articles = GlobalState.getInstance().m_loadedArticles;
private OnlineActivity m_activity;
private String m_searchQuery = "";
private Feed m_feed;
private SharedPreferences m_prefs;
private class PagerAdapter extends FragmentStatePagerAdapter {
public PagerAdapter(FragmentManager fm) {
super(fm);
}
@Override
public Fragment getItem(int position) {
Article article = m_articles.get(position);
if (article != null) {
ArticleFragment af = new ArticleFragment();
af.initialize(article);
if (m_prefs.getBoolean("dim_status_bar", false) && getView() != null && !m_activity.isCompatMode()) {
getView().setSystemUiVisibility(View.SYSTEM_UI_FLAG_LOW_PROFILE);
}
return af;
}
return null;
}
@Override
public int getCount() {
return m_articles.size();
}
}
public void initialize(Article article, Feed feed) {
m_article = article;
m_feed = feed;
}
public void setSearchQuery(String searchQuery) {
m_searchQuery = searchQuery;
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.article_pager, container, false);
if (savedInstanceState != null) {
m_article = savedInstanceState.getParcelable("article");
m_feed = savedInstanceState.getParcelable("feed");
}
m_adapter = new PagerAdapter(getActivity().getSupportFragmentManager());
ViewPager pager = (ViewPager) view.findViewById(R.id.article_pager);
int position = m_articles.indexOf(m_article);
m_listener.onArticleSelected(m_article, false);
m_activity.setProgressBarVisibility(true);
pager.setAdapter(m_adapter);
UnderlinePageIndicator indicator = (UnderlinePageIndicator)view.findViewById(R.id.article_titles);
indicator.setViewPager(pager);
pager.setCurrentItem(position);
indicator.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {
@Override
public void onPageScrollStateChanged(int arg0) {
}
@Override
public void onPageScrolled(int arg0, float arg1, int arg2) {
}
@Override
public void onPageSelected(int position) {
Article article = m_articles.get(position);
if (article != null) {
m_article = article;
/* if (article.unread) {
article.unread = false;
m_activity.saveArticleUnread(article);
} */
m_listener.onArticleSelected(article, false);
//Log.d(TAG, "Page #" + position + "/" + m_adapter.getCount());
if ((m_activity.isSmallScreen() || m_activity.isPortrait()) && position == m_adapter.getCount() - 5) {
Log.d(TAG, "loading more articles...");
refresh(true);
}
}
}
});
return view;
}
@SuppressWarnings({ "unchecked", "serial" })
protected void refresh(boolean append) {
m_activity.setLoadingStatus(R.string.blank, true);
m_activity.setProgressBarVisibility(true);
if (!m_feed.equals(GlobalState.getInstance().m_activeFeed)) {
append = false;
}
HeadlinesRequest req = new HeadlinesRequest(getActivity().getApplicationContext(), m_activity) {
@Override
protected void onProgressUpdate(Integer... progress) {
m_activity.setProgress(progress[0] / progress[1] * 10000);
}
@Override
protected void onPostExecute(JsonElement result) {
if (isDetached()) return;
m_activity.setProgressBarVisibility(false);
super.onPostExecute(result);
if (result != null) {
try {
m_adapter.notifyDataSetChanged();
} catch (BadParcelableException e) {
if (getActivity() != null) {
getActivity().finish();
return;
}
}
if (m_article != null) {
if (m_article.id == 0 || m_articles.indexOf(m_article) == -1) {
if (m_articles.size() > 0) {
m_article = m_articles.get(0);
m_listener.onArticleSelected(m_article, false);
}
}
}
} else {
if (m_lastError == ApiError.LOGIN_FAILED) {
m_activity.login(true);
} else {
m_activity.toast(getErrorMessage());
//setLoadingStatus(getErrorMessage(), false);
}
}
}
};
final Feed feed = m_feed;
final String sessionId = m_activity.getSessionId();
int skip = 0;
if (append) {
// adaptive, all_articles, marked, published, unread
String viewMode = m_activity.getViewMode();
int numUnread = 0;
int numAll = m_articles.size();
for (Article a : m_articles) {
if (a.unread) ++numUnread;
}
if ("marked".equals(viewMode)) {
skip = numAll;
} else if ("published".equals(viewMode)) {
skip = numAll;
} else if ("unread".equals(viewMode)) {
skip = numUnread;
} else if (m_searchQuery != null && m_searchQuery.length() > 0) {
skip = numAll;
} else if ("adaptive".equals(viewMode)) {
skip = numUnread > 0 ? numUnread : numAll;
} else {
skip = numAll;
}
}
final int fskip = skip;
req.setOffset(skip);
HashMap<String,String> map = new HashMap<String,String>() {
{
put("op", "getHeadlines");
put("sid", sessionId);
put("feed_id", String.valueOf(feed.id));
put("show_content", "true");
put("include_attachments", "true");
put("limit", String.valueOf(HeadlinesFragment.HEADLINES_REQUEST_SIZE));
put("offset", String.valueOf(0));
put("view_mode", m_activity.getViewMode());
put("skip", String.valueOf(fskip));
put("include_nested", "true");
put("order_by", m_prefs.getBoolean("oldest_first", false) ? "date_reverse" : "");
if (feed.is_cat) put("is_cat", "true");
if (m_searchQuery != null && m_searchQuery.length() != 0) {
put("search", m_searchQuery);
put("search_mode", "");
put("match_on", "both");
}
}
};
req.execute(map);
}
@Override
public void onSaveInstanceState(Bundle out) {
super.onSaveInstanceState(out);
out.putParcelable("article", m_article);
out.putParcelable("feed", m_feed);
}
@Override
public void onAttach(Activity activity) {
super.onAttach(activity);
m_listener = (HeadlinesEventListener)activity;
m_activity = (OnlineActivity)activity;
m_prefs = PreferenceManager.getDefaultSharedPreferences(getActivity().getApplicationContext());
}
@SuppressLint("NewApi")
@Override
public void onResume() {
super.onResume();
if (m_articles.size() == 0 || !m_feed.equals(GlobalState.getInstance().m_activeFeed)) {
refresh(false);
GlobalState.getInstance().m_activeFeed = m_feed;
}
m_activity.initMenu();
if (!m_activity.isCompatMode() && m_prefs.getBoolean("dim_status_bar", false)) {
getView().setSystemUiVisibility(View.SYSTEM_UI_FLAG_LOW_PROFILE);
}
if (m_prefs.getBoolean("full_screen_mode", false)) {
m_activity.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
/* if (!m_activity.isCompatMode()) {
m_activity.getSupportActionBar().hide();
} */
}
}
public Article getSelectedArticle() {
return m_article;
}
public void setActiveArticle(Article article) {
if (m_article != article) {
m_article = article;
int position = m_articles.indexOf(m_article);
ViewPager pager = (ViewPager) getView().findViewById(R.id.article_pager);
pager.setCurrentItem(position);
}
}
public void selectArticle(boolean next) {
if (m_article != null) {
int position = m_articles.indexOf(m_article);
if (next)
position++;
else
position--;
try {
Article tmp = m_articles.get(position);
if (tmp != null) {
setActiveArticle(tmp);
}
} catch (IndexOutOfBoundsException e) {
// do nothing
}
}
}
public void notifyUpdated() {
m_adapter.notifyDataSetChanged();
}
}