tt-rss-android/src/org/fox/ttrss/offline/OfflineArticlePager.java

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Java
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package org.fox.ttrss.offline;
import org.fox.ttrss.R;
import android.app.Activity;
import android.database.Cursor;
import android.os.Bundle;
import android.provider.BaseColumns;
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;
public class OfflineArticlePager extends Fragment {
private final String TAG = this.getClass().getSimpleName();
private PagerAdapter m_adapter;
private OfflineActivity m_activity;
private OfflineHeadlinesEventListener m_listener;
private boolean m_isCat;
private int m_feedId;
private int m_articleId;
private String m_searchQuery = "";
private Cursor m_cursor;
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public int getFeedId() {
return m_feedId;
}
public boolean getFeedIsCat() {
return m_isCat;
}
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public Cursor createCursor() {
String feedClause = null;
if (m_isCat) {
feedClause = "feed_id IN (SELECT "+BaseColumns._ID+" FROM feeds WHERE cat_id = ?)";
} else {
feedClause = "feed_id = ?";
}
if (m_searchQuery == null || m_searchQuery.equals("")) {
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return m_activity.getReadableDb().query("articles LEFT JOIN feeds ON (feed_id = feeds."+BaseColumns._ID+")",
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new String[] { "articles."+BaseColumns._ID, "feeds.title AS feed_title" }, feedClause,
new String[] { String.valueOf(m_feedId) }, null, null, "updated DESC");
} else {
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return m_activity.getReadableDb().query("articles LEFT JOIN feeds ON (feed_id = feeds."+BaseColumns._ID+")",
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new String[] { "articles."+BaseColumns._ID },
feedClause + " AND (articles.title LIKE '%' || ? || '%' OR content LIKE '%' || ? || '%')",
new String[] { String.valueOf(m_feedId), m_searchQuery, m_searchQuery }, null, null, "updated DESC");
}
}
@Override
public void onDestroy() {
super.onDestroy();
if (m_cursor != null && !m_cursor.isClosed()) m_cursor.close();
}
private class PagerAdapter extends FragmentStatePagerAdapter {
public PagerAdapter(FragmentManager fm) {
super(fm);
}
@Override
public Fragment getItem(int position) {
Log.d(TAG, "getItem: " + position);
if (m_cursor.moveToPosition(position)) {
return new OfflineArticleFragment(m_cursor.getInt(m_cursor.getColumnIndex(BaseColumns._ID)));
}
return null;
}
@Override
public int getCount() {
return m_cursor.getCount();
}
}
public OfflineArticlePager() {
super();
}
public OfflineArticlePager(int articleId, int feedId, boolean isCat) {
super();
m_feedId = feedId;
m_isCat = isCat;
m_articleId = articleId;
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.article_pager, container, false);
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if (savedInstanceState != null) {
m_articleId = savedInstanceState.getInt("articleId", 0);
m_feedId = savedInstanceState.getInt("feedId", 0);
m_isCat = savedInstanceState.getBoolean("isCat", false);
}
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m_adapter = new PagerAdapter(getActivity().getSupportFragmentManager());
m_cursor.moveToFirst();
int position = 0;
while (!m_cursor.isLast()) {
if (m_cursor.getInt(m_cursor.getColumnIndex(BaseColumns._ID)) == m_articleId) {
position = m_cursor.getPosition();
break;
}
m_cursor.moveToNext();
}
ViewPager pager = (ViewPager) view.findViewById(R.id.article_pager);
pager.setAdapter(m_adapter);
pager.setCurrentItem(position);
pager.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) {
if (m_cursor.moveToPosition(position)) {
int articleId = m_cursor.getInt(m_cursor.getColumnIndex(BaseColumns._ID));
m_listener.onArticleSelected(articleId, false);
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m_articleId = articleId;
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}
}
});
return view;
}
@Override
public void onAttach(Activity activity) {
super.onAttach(activity);
m_activity = (OfflineActivity)activity;
m_listener = (OfflineHeadlinesEventListener)activity;
m_cursor = createCursor();
}
public void refresh() {
if (m_cursor != null && !m_cursor.isClosed()) m_cursor.close();
m_cursor = createCursor();
if (m_cursor != null) {
m_adapter.notifyDataSetChanged();
}
}
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public int getSelectedArticleId() {
return m_articleId;
}
@Override
public void onSaveInstanceState(Bundle out) {
super.onSaveInstanceState(out);
out.putInt("articleId", m_articleId);
out.putInt("feedId", m_feedId);
out.putBoolean("isCat", m_isCat);
}
public void setSearchQuery(String searchQuery) {
m_searchQuery = searchQuery;
}
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public void setArticleId(int articleId) {
m_articleId = articleId;
m_cursor.moveToFirst();
int position = 0;
while (!m_cursor.isLast()) {
if (m_cursor.getInt(m_cursor.getColumnIndex(BaseColumns._ID)) == m_articleId) {
position = m_cursor.getPosition();
break;
}
m_cursor.moveToNext();
}
ViewPager pager = (ViewPager) getView().findViewById(R.id.article_pager);
pager.setCurrentItem(position);
}
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}