DeleteTimerAction.java

/*
 * Copyright (c) Henrik Niehaus & Lazy Bones development team
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * 
 * 1. Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 * 3. Neither the name of the project (Lazy Bones) nor the names of its
 *    contributors may be used to endorse or promote products derived from this
 *    software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */
package lazybones.actions;

import java.util.List;

import javax.swing.JOptionPane;

import lazybones.LazyBones;
import lazybones.LazyBonesTimer;
import lazybones.VDRCallback;
import lazybones.VDRConnection;
import lazybones.actions.responses.TimersOutOfSync;

import org.hampelratte.svdrp.Response;
import org.hampelratte.svdrp.commands.DELT;
import org.hampelratte.svdrp.commands.LSTT;
import org.hampelratte.svdrp.commands.UPDT;
import org.hampelratte.svdrp.parsers.TimerParser;
import org.hampelratte.svdrp.responses.R250;
import org.hampelratte.svdrp.responses.highlevel.Timer;

public class DeleteTimerAction extends VDRAction {

    private final LazyBonesTimer timer;
    private boolean forceDeletion = false;

    public DeleteTimerAction(LazyBonesTimer timer) {
        this(timer, null);
    }

    public DeleteTimerAction(LazyBonesTimer timer, VDRCallback<DeleteTimerAction> callback) {
        setCallback(callback);
        this.timer = timer;
    }

    /**
     * 
     * @param timer
     *            The timer to delete.
     * @param forceDeletion
     *            If set, the timer will be deleted without user confirmation
     */
    public DeleteTimerAction(LazyBonesTimer timer, boolean forceDeletion) {
        this(timer);
        this.forceDeletion = forceDeletion;
    }

    @Override
    boolean execute() {
        // snychronize this timer with vdr and check if the timers on the vdr haven't changed
        response = VDRConnection.send(new LSTT(timer.getID()));
        if (response == null || !(response instanceof R250)) {
            return false;
        }
        if (response instanceof R250) {
            List<Timer> timers = TimerParser.parse(response.getMessage());
            Timer vdrTimer = timers.get(0);
            LazyBonesTimer timerFromVDR = new LazyBonesTimer(vdrTimer);
            if (!timerFromVDR.getUniqueKey().equals(timer.getUniqueKey())) {
                response = new TimersOutOfSync();
                return false;
            }
        }

        // check if timer is recording
        if (timer.hasState(LazyBonesTimer.RECORDING)) {
            if (!forceDeletion) {
                int result = JOptionPane.showConfirmDialog(LazyBones.getInstance().getParent(),
                        LazyBones.getTranslation("recording_timer_delete", "This timer is currently recording! Do you really want to delete it?"), "",
                        JOptionPane.YES_NO_OPTION);
                if (result != JOptionPane.OK_OPTION) {
                    // do nothing
                    return true;
                }
            }

            // we have to deactivate the timer before we
            // are able to delete it
            timer.changeStateTo(LazyBonesTimer.ACTIVE, false);
            response = VDRConnection.send(new UPDT(timer));
            if (response == null || !(response instanceof R250)) {
                return false;
            }
        }

        // wait a small amount of time. it seems, that this time is needed. otherwise we still get the error, that this timer is recording
        try {
            Thread.sleep(1000);
        } catch (InterruptedException e) {
        }

        // delete timer
        response = VDRConnection.send(new DELT(timer));
        if (response == null || !(response instanceof R250)) {
            return false;
        }

        return true;
    }

    @Override
    public Response getResponse() {
        return response;
    }

    @Override
    public String getDescription() {
        return "Delete timer " + timer;
    }
}