com.nadmm.airports.library.LibraryMainFragment.java Source code

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Here is the source code for com.nadmm.airports.library.LibraryMainFragment.java

Source

/*
 * FlightIntel for Pilots
 *
 * Copyright 2012-2013 Nadeem Hasan <nhasan@nadmm.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 com.nadmm.airports.library;

import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteQueryBuilder;
import android.os.Bundle;
import android.support.v4.view.ViewPager;
import android.support.v7.app.ActionBar;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import com.nadmm.airports.DatabaseManager;
import com.nadmm.airports.DatabaseManager.BookCategories;
import com.nadmm.airports.FragmentBase;
import com.nadmm.airports.R;
import com.nadmm.airports.utils.NavAdapter;
import com.nadmm.airports.utils.TabsAdapter;

public class LibraryMainFragment extends FragmentBase
        implements ActionBar.OnNavigationListener, ViewPager.OnPageChangeListener {

    private TabsAdapter mTabsAdapter;
    private int mFragmentId = -1;
    private ViewPager mViewPager;

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        View view = inflate(R.layout.fragment_pager_no_tab_layout, container);
        return view;
    }

    @Override
    public void onActivityCreated(Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);

        mViewPager = (ViewPager) findViewById(R.id.content_pager);
        mViewPager.setOnPageChangeListener(this);

        mTabsAdapter = new TabsAdapter(getActivity(), getChildFragmentManager(), mViewPager);

        SQLiteDatabase db = getDatabase(DatabaseManager.DB_LIBRARY);
        SQLiteQueryBuilder builder = new SQLiteQueryBuilder();
        builder.setTables(BookCategories.TABLE_NAME);
        Cursor c = builder.query(db, new String[] { "*" }, null, null, null, null, BookCategories._ID);
        if (c.moveToFirst()) {
            do {
                String code = c.getString(c.getColumnIndex(BookCategories.CATEGORY_CODE));
                String name = c.getString(c.getColumnIndex(BookCategories.CATEGORY_NAME));
                Bundle args = new Bundle();
                args.putString(BookCategories.CATEGORY_CODE, code);
                mTabsAdapter.addTab(name, LibraryPageFragment.class, args);
            } while (c.moveToNext());
        }

        // Setup list navigation mode
        ActionBar actionBar = getSupportActionBar();
        actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_LIST);
        String[] titles = mTabsAdapter.getPageTitles();
        NavAdapter adapter = new NavAdapter(actionBar.getThemedContext(), R.string.library, titles);
        actionBar.setListNavigationCallbacks(adapter, this);
        actionBar.setDisplayShowTitleEnabled(false);

        if (savedInstanceState != null) {
            // Workaround for race conditions in ViewPager
            // See: http://code.google.com/p/android/issues/detail?id=29472
            final int lastPos = savedInstanceState.getInt("libtab");
            mViewPager.post(new Runnable() {

                @Override
                public void run() {
                    setCurrentPage(lastPos);
                }
            });
        }
    }

    @Override
    public void onResume() {
        ActionBar actionBar = getSupportActionBar();
        if (actionBar.getNavigationMode() == ActionBar.NAVIGATION_MODE_LIST) {
            actionBar.setSelectedNavigationItem(mFragmentId);
        }

        super.onResume();
    }

    @Override
    public void onSaveInstanceState(Bundle outState) {
        super.onSaveInstanceState(outState);
        outState.putInt("libtab", mViewPager.getCurrentItem());
    }

    @Override
    public boolean onNavigationItemSelected(int itemPosition, long itemId) {
        setCurrentPage(itemPosition);
        return true;
    }

    @Override
    public void onPageScrollStateChanged(int arg0) {
    }

    @Override
    public void onPageScrolled(int arg0, float arg1, int arg2) {
    }

    @Override
    public void onPageSelected(int position) {
        ActionBar actionBar = getSupportActionBar();
        actionBar.setSelectedNavigationItem(position);
    }

    private void setCurrentPage(int pos) {
        // Workaround for race conditions in ViewPager
        // See: http://code.google.com/p/android/issues/detail?id=29472
        if (mViewPager.getCurrentItem() != pos) {
            mViewPager.setCurrentItem(pos);
        }
    }

}