uk.org.rivernile.edinburghbustracker.android.fragments.dialogs.DeleteAllAlertsDialogFragment.java Source code

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Here is the source code for uk.org.rivernile.edinburghbustracker.android.fragments.dialogs.DeleteAllAlertsDialogFragment.java

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/*
 * Copyright (C) 2012 - 2013 Niall 'Rivernile' Scott
 *
 * This software is provided 'as-is', without any express or implied
 * warranty.  In no event will the authors or contributors be held liable for
 * any damages arising from the use of this software.
 *
 * The aforementioned copyright holder(s) hereby grant you a
 * non-transferrable right to use this software for any purpose (including
 * commercial applications), and to modify it and redistribute it, subject to
 * the following conditions:
 *
 *  1. This notice may not be removed or altered from any file it appears in.
 *
 *  2. Any modifications made to this software, except those defined in
 *     clause 3 of this agreement, must be released under this license, and
 *     the source code of any modifications must be made available on a
 *     publically accessible (and locateable) website, or sent to the
 *     original author of this software.
 *
 *  3. Software modifications that do not alter the functionality of the
 *     software but are simply adaptations to a specific environment are
 *     exempt from clause 2.
 */

package uk.org.rivernile.edinburghbustracker.android.fragments.dialogs;

import android.app.Activity;
import android.app.AlertDialog;
import android.app.Dialog;
import android.content.DialogInterface;
import android.os.Bundle;
import android.support.v4.app.DialogFragment;
import uk.org.rivernile.edinburghbustracker.android.R;
import uk.org.rivernile.edinburghbustracker.android.alerts.AlertManager;

/**
 * This Fragment will show a Dialog which asks the user to confirm if they wish
 * to delete all alerts or not.
 * 
 * @author Niall Scott
 */
public class DeleteAllAlertsDialogFragment extends DialogFragment {

    private AlertManager alertMan;
    private Callbacks callbacks;

    /**
     * {@inheritDoc}
     */
    @Override
    public void onAttach(final Activity activity) {
        super.onAttach(activity);

        try {
            callbacks = (Callbacks) activity;
        } catch (ClassCastException e) {
            throw new IllegalStateException(
                    activity.getClass().getName() + " does not implement " + Callbacks.class.getName());
        }
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public void onCreate(final Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        // Make sure to get the AlertManager.
        alertMan = AlertManager.getInstance(getActivity().getApplicationContext());
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public Dialog onCreateDialog(final Bundle savedInstanceState) {
        final AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
        builder.setCancelable(true).setTitle(R.string.deleteallalertsdialog_title)
                .setPositiveButton(R.string.okay, new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(final DialogInterface dialog, final int id) {
                        alertMan.removeTimeAlert();
                        alertMan.removeProximityAlert();

                        callbacks.onConfirmAllAlertsDeletion();
                    }
                }).setNegativeButton(R.string.cancel, new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(final DialogInterface dialog, final int id) {
                        callbacks.onCancelAllAlertsDeletion();
                    }
                });

        return builder.create();
    }

    /**
     * Any Activities which host this Fragment must implement this interface to
     * handle navigation events.
     */
    public interface Callbacks {

        /**
         * This is called when the user has confirmed that they wish for all
         * alerts to be deleted.
         */
        public void onConfirmAllAlertsDeletion();

        /**
         * This is called when the user has cancelled the deletion of all
         * alerts.
         */
        public void onCancelAllAlertsDeletion();
    }
}