de.vanita5.twittnuker.adapter.SourceAutoCompleteAdapter.java Source code

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Here is the source code for de.vanita5.twittnuker.adapter.SourceAutoCompleteAdapter.java

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/*
 * Twittnuker - Twitter client for Android
 *
 * Copyright (C) 2013-2014 vanita5 <mail@vanita5.de>
 *
 * This program incorporates a modified version of Twidere.
 * Copyright (C) 2012-2014 Mariotaku Lee <mariotaku.lee@gmail.com>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package de.vanita5.twittnuker.adapter;

import android.content.Context;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.support.v4.widget.SimpleCursorAdapter;
import android.view.View;
import android.widget.TextView;

import de.vanita5.twittnuker.Constants;
import de.vanita5.twittnuker.app.TwittnukerApplication;
import de.vanita5.twittnuker.provider.TweetStore.CachedStatuses;
import de.vanita5.twittnuker.util.HtmlEscapeHelper;

public class SourceAutoCompleteAdapter extends SimpleCursorAdapter implements Constants {

    private static final String[] COLUMNS = new String[] { CachedStatuses._ID, CachedStatuses.SOURCE };
    private static final String[] FROM = new String[0];
    private static final int[] TO = new int[0];

    private final SQLiteDatabase mDatabase;

    private int mSourceIdx;

    public SourceAutoCompleteAdapter(final Context context) {
        super(context, android.R.layout.simple_list_item_1, null, FROM, TO, 0);
        final TwittnukerApplication app = TwittnukerApplication.getInstance(context);
        mDatabase = app != null ? app.getSQLiteDatabase() : null;
    }

    @Override
    public void bindView(final View view, final Context context, final Cursor cursor) {
        if (isCursorClosed())
            return;
        final TextView text1 = (TextView) view.findViewById(android.R.id.text1);
        text1.setText(convertToString(cursor));
        super.bindView(view, context, cursor);
    }

    @Override
    public CharSequence convertToString(final Cursor cursor) {
        if (isCursorClosed() || mSourceIdx == -1)
            return null;
        return HtmlEscapeHelper.toPlainText(cursor.getString(mSourceIdx));
    }

    public boolean isCursorClosed() {
        final Cursor cursor = getCursor();
        return cursor == null || cursor.isClosed();
    }

    @Override
    public Cursor runQueryOnBackgroundThread(final CharSequence constraint) {
        final String constraint_escaped = constraint != null ? constraint.toString().replaceAll("_", "^_") : null;
        final String selection = constraint != null ? CachedStatuses.SOURCE + " LIKE '%\">'||?||'%</a>' ESCAPE '^'"
                : null;
        final String[] selectionArgs = constraint != null ? new String[] { constraint_escaped } : null;
        return mDatabase.query(true, CachedStatuses.TABLE_NAME, COLUMNS, selection, selectionArgs,
                CachedStatuses.SOURCE, null, null, null);
    }

    @Override
    public Cursor swapCursor(final Cursor cursor) {
        if (cursor != null) {
            mSourceIdx = cursor.getColumnIndex(CachedStatuses.SOURCE);
        }
        return super.swapCursor(cursor);
    }

}