2013-04-06 21:47:24 +02:00
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/*
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This file is part of Subsonic.
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Subsonic is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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Subsonic is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Subsonic. If not, see <http://www.gnu.org/licenses/>.
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Copyright 2009 (C) Sindre Mehus
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*/
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2015-07-26 18:15:07 +02:00
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package org.moire.ultrasonic.util;
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2013-04-06 21:47:24 +02:00
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import android.app.Activity;
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import android.app.AlertDialog;
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import android.content.DialogInterface;
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2020-09-30 14:47:59 +02:00
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import timber.log.Timber;
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2013-12-04 07:36:02 +01:00
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2015-07-26 18:15:07 +02:00
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import org.moire.ultrasonic.R;
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2013-04-06 21:47:24 +02:00
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/**
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* @author Sindre Mehus
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*/
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2013-12-04 07:36:02 +01:00
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public abstract class ModalBackgroundTask<T> extends BackgroundTask<T>
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{
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private final AlertDialog progressDialog;
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private Thread thread;
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private final boolean finishActivityOnCancel;
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private boolean cancelled;
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public ModalBackgroundTask(Activity activity, boolean finishActivityOnCancel)
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{
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super(activity);
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this.finishActivityOnCancel = finishActivityOnCancel;
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progressDialog = createProgressDialog();
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}
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public ModalBackgroundTask(Activity activity)
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{
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this(activity, true);
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}
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private AlertDialog createProgressDialog()
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{
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AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
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builder.setIcon(android.R.drawable.ic_dialog_info);
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builder.setTitle(R.string.background_task_wait);
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builder.setMessage(R.string.background_task_loading);
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builder.setCancelable(true);
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builder.setOnCancelListener(new DialogInterface.OnCancelListener()
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{
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@Override
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public void onCancel(DialogInterface dialogInterface)
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{
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cancel();
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}
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});
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builder.setPositiveButton(R.string.common_cancel, new DialogInterface.OnClickListener()
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{
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@Override
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public void onClick(DialogInterface dialogInterface, int i)
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{
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cancel();
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}
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});
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return builder.create();
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}
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@Override
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public void execute()
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{
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cancelled = false;
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progressDialog.show();
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thread = new Thread()
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{
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@Override
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public void run()
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{
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try
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{
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final T result = doInBackground();
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if (cancelled)
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{
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progressDialog.dismiss();
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return;
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}
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getHandler().post(new Runnable()
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{
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@Override
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public void run()
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{
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2013-12-07 03:43:13 +01:00
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try
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{
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progressDialog.dismiss();
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}
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catch (Exception e)
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{
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// nothing
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}
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2013-12-04 07:36:02 +01:00
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done(result);
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}
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});
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}
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catch (final Throwable t)
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{
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if (cancelled)
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{
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return;
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}
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getHandler().post(new Runnable()
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{
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@Override
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public void run()
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{
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try
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{
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progressDialog.dismiss();
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}
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catch (Exception e)
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{
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// nothing
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}
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error(t);
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}
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});
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}
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}
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};
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thread.start();
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}
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protected void cancel()
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{
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cancelled = true;
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if (thread != null)
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{
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thread.interrupt();
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}
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if (finishActivityOnCancel)
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{
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getActivity().finish();
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}
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}
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protected boolean isCancelled()
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{
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return cancelled;
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}
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@Override
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protected void error(Throwable error)
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{
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2020-09-30 14:47:59 +02:00
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Timber.w(error);
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2013-12-04 07:36:02 +01:00
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new ErrorDialog(getActivity(), getErrorMessage(error), finishActivityOnCancel);
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}
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@Override
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public void updateProgress(final String message)
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{
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getHandler().post(new Runnable()
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{
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@Override
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public void run()
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{
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progressDialog.setMessage(message);
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}
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});
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}
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2013-04-06 21:47:24 +02:00
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}
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