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

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

Source

/*
 * FlightIntel for Pilots
 *
 * Copyright 2012-2015 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.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteQueryBuilder;
import android.os.Bundle;
import android.support.v4.content.LocalBroadcastManager;

import com.nadmm.airports.R;
import com.nadmm.airports.TabPagerActivityBase;
import com.nadmm.airports.data.DatabaseManager;
import com.nadmm.airports.utils.CursorAsyncTask;
import com.nadmm.airports.utils.SystemUtils;

import java.util.HashMap;

public class LibraryActivity extends TabPagerActivityBase {

    private boolean mPending = false;
    private final Object mLock = new Object();
    private HashMap<String, BroadcastReceiver> mReceivers;
    private BroadcastReceiver mReceiver;
    private IntentFilter mFilter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        setActionBarTitle("Library", null);

        mReceivers = new HashMap<>();
        mReceiver = new BroadcastReceiver() {

            @Override
            public void onReceive(Context context, Intent intent) {
                String category = intent.getStringExtra(LibraryService.CATEGORY);
                BroadcastReceiver receiver = mReceivers.get(category);
                if (receiver != null) {
                    receiver.onReceive(context, intent);
                }

                // Show the PDF here as the Fragment requesting it may be paused
                String action = intent.getAction();

                if (action.equals(LibraryService.ACTION_GET_BOOK)) {
                    String path = intent.getStringExtra(LibraryService.PDF_PATH);
                    mPending = false;
                    if (path != null) {
                        SystemUtils.startPDFViewer(LibraryActivity.this, path);
                    }
                }
            }
        };
        mFilter = new IntentFilter();
        mFilter.setPriority(10);
        mFilter.addAction(LibraryService.ACTION_CHECK_BOOKS);
        mFilter.addAction(LibraryService.ACTION_GET_BOOK);
        mFilter.addAction(LibraryService.ACTION_DOWNLOAD_PROGRESS);

        SQLiteDatabase db = getDatabase(DatabaseManager.DB_LIBRARY);
        SQLiteQueryBuilder builder = new SQLiteQueryBuilder();
        builder.setTables(DatabaseManager.BookCategories.TABLE_NAME);
        Cursor c = builder.query(db, new String[] { "*" }, null, null, null, null,
                DatabaseManager.BookCategories._ID);
        populateTabs(c);

        //setBackgroundTask( new LibraryCategoryTask() ).execute( "" );
    }

    @Override
    protected void onResume() {
        LocalBroadcastManager bm = LocalBroadcastManager.getInstance(this);
        bm.registerReceiver(mReceiver, mFilter);

        super.onResume();
    }

    @Override
    protected void onPause() {
        LocalBroadcastManager bm = LocalBroadcastManager.getInstance(this);
        bm.unregisterReceiver(mReceiver);

        super.onPause();
    }

    @Override
    protected int getSelfNavDrawerItem() {
        return R.id.navdrawer_library;
    }

    protected void populateTabs(Cursor c) {
        if (c.moveToFirst()) {
            do {
                String code = c.getString(c.getColumnIndex(DatabaseManager.BookCategories.CATEGORY_CODE));
                String name = c.getString(c.getColumnIndex(DatabaseManager.BookCategories.CATEGORY_NAME));
                Bundle args = new Bundle();
                args.putString(DatabaseManager.BookCategories.CATEGORY_CODE, code);
                addTab(name, LibraryPageFragment.class, args);
            } while (c.moveToNext());
        }
    }

    public void setPending(boolean pending) {
        synchronized (mLock) {
            mPending = pending;
        }
    }

    public boolean isPending() {
        synchronized (mLock) {
            return mPending;
        }
    }

    public void registerReceiver(String category, BroadcastReceiver receiver) {
        mReceivers.put(category, receiver);
    }

    public void unregisterReceiver(String category) {
        mReceivers.remove(category);
    }

    private final class LibraryCategoryTask extends CursorAsyncTask {

        @Override
        protected Cursor[] doInBackground(String... params) {
            Cursor[] result = new Cursor[1];

            SQLiteDatabase db = getDatabase(DatabaseManager.DB_LIBRARY);
            SQLiteQueryBuilder builder = new SQLiteQueryBuilder();
            builder.setTables(DatabaseManager.BookCategories.TABLE_NAME);
            Cursor c = builder.query(db, new String[] { "*" }, null, null, null, null,
                    DatabaseManager.BookCategories._ID);
            result[0] = c;

            return result;
        }

        @Override
        protected boolean onResult(Cursor[] result) {
            populateTabs(result[0]);
            return true;
        }

    }

}