com.espian.ticktock.TickTockActivity.java Source code

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Here is the source code for com.espian.ticktock.TickTockActivity.java

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/*
 * Copyright (C) 2013 Alex Curran.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.espian.ticktock;

import android.app.LoaderManager;
import android.content.CursorLoader;
import android.content.Intent;
import android.content.Loader;
import android.database.Cursor;
import android.os.Bundle;
import android.os.StrictMode;
import android.provider.BaseColumns;
import android.support.v4.app.FragmentActivity;
import android.support.v4.view.ViewPager;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.Toast;
import com.espian.ticktock.oss.CursorPagerAdapter;

public class TickTockActivity extends FragmentActivity implements LoaderManager.LoaderCallbacks<Cursor> {

    CursorPagerAdapter<CountdownFragment> mPagerAdapter;
    ViewPager mPager;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        if (BuildConfig.DEBUG) {
            StrictMode.setThreadPolicy(
                    new StrictMode.ThreadPolicy.Builder().detectAll().penaltyFlashScreen().penaltyLog().build());
        }

        mPagerAdapter = new TitleCursorPagerAdapter(this);
        (mPager = (ViewPager) findViewById(R.id.pager)).setAdapter(mPagerAdapter);

        getLoaderManager().initLoader(0, null, this);

    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

    @Override
    public boolean onPrepareOptionsMenu(Menu menu) {
        boolean shouldShow = !(mPagerAdapter.getItem(mPager.getCurrentItem()) instanceof EmptyFragment);
        menu.findItem(R.id.menu_edit).setVisible(shouldShow);
        menu.findItem(R.id.menu_delete).setVisible(shouldShow);
        return super.onPrepareOptionsMenu(menu);
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {

        switch (item.getItemId()) {

        case R.id.menu_new:
            startActivityForResult(new Intent(this, AddEditActivity.class), 1);
            break;

        case R.id.menu_delete:
            if (mPagerAdapter.getCount() == 0)
                Toast.makeText(this, R.string.no_delete, Toast.LENGTH_SHORT).show();
            else {
                String idString = ((CountdownFragment) mPagerAdapter.getItem(mPager.getCurrentItem()))
                        .getCountdownId();
                int i = getContentResolver().delete(TickTockProvider.countdownUri, BaseColumns._ID + "=?",
                        new String[] { idString });
                if (i != 0)
                    getLoaderManager().restartLoader(0, null, this);
                else
                    Toast.makeText(this, R.string.failed_delete, Toast.LENGTH_SHORT).show();
                mPagerAdapter.notifyDataSetChanged();
            }
            return true;

        case R.id.menu_edit:
            if (mPagerAdapter.getCount() == 0)
                Toast.makeText(this, R.string.no_edit, Toast.LENGTH_SHORT).show();
            else {
                String idString2 = ((CountdownFragment) mPagerAdapter.getItem(mPager.getCurrentItem()))
                        .getCountdownId();
                startActivityForResult(new Intent(this, AddEditActivity.class).putExtra(BaseColumns._ID, idString2),
                        1);
            }
            return true;

        }
        return true;
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        if (requestCode == 1) {
            if (resultCode == RESULT_OK) {
                getLoaderManager().restartLoader(0, null, this);
            }
        }

        // Invalidate the options menu - if they've gone from 0 to 1 items
        // then we can un-hide delete and edit
        invalidateOptionsMenu();
    }

    @Override
    public Loader<Cursor> onCreateLoader(int id, Bundle args) {
        return new CursorLoader(this, TickTockProvider.countdownUri, null, null, null, null);
    }

    @Override
    public void onLoadFinished(Loader<Cursor> loader, Cursor data) {
        mPagerAdapter.swapCursor(data);
        // Going from 1 <-> 0 items, hide or show edit/delete
        invalidateOptionsMenu();
    }

    @Override
    public void onLoaderReset(Loader<Cursor> loader) {
        mPagerAdapter.swapCursor(null);
        // Going from 1 <-> 0 items, hide or show edit/delete
        invalidateOptionsMenu();
    }

}