96 lines
3 KiB
C#
96 lines
3 KiB
C#
// SparkleShare, a collaboration and sharing tool.
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// Copyright (C) 2010 Hylke Bons <hylkebons@gmail.com>
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//
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// This program 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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//
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// This program 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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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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using System;
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using System.Net;
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using System.Threading;
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using System.Timers;
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using SparkleLib;
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namespace SparkleShare {
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public class SparkleAboutController {
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public event NewVersionEventHandler NewVersionEvent;
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public delegate void NewVersionEventHandler (string new_version);
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public event VersionUpToDateEventHandler VersionUpToDateEvent;
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public delegate void VersionUpToDateEventHandler ();
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public event CheckingForNewVersionEventHandler CheckingForNewVersionEvent;
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public delegate void CheckingForNewVersionEventHandler ();
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public string RunningVersion {
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get {
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return SparkleBackend.Version;
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}
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}
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// Check for a new version once a day
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private System.Timers.Timer version_checker = new System.Timers.Timer () {
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Enabled = true,
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Interval = 24 * 60 * 60 * 1000
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};
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public SparkleAboutController ()
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{
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CheckForNewVersion ();
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this.version_checker.Elapsed += delegate {
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CheckForNewVersion ();
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};
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}
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public void CheckForNewVersion ()
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{
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this.version_checker.Stop ();
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if (CheckingForNewVersionEvent != null)
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CheckingForNewVersionEvent ();
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WebClient web_client = new WebClient ();
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Uri uri = new Uri ("http://www.sparkleshare.org/version");
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web_client.DownloadStringCompleted += delegate (object o, DownloadStringCompletedEventArgs args) {
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if (args.Error != null)
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return;
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string new_version = args.Result.Trim ();
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// Add a little delay, making it seems we're
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// actually doing hard work
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Thread.Sleep (2 * 1000);
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if (RunningVersion.Equals (new_version)) {
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if (VersionUpToDateEvent != null)
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VersionUpToDateEvent ();
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} else {
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if (NewVersionEvent != null)
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NewVersionEvent (new_version);
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}
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this.version_checker.Start ();
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};
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web_client.DownloadStringAsync (uri);
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}
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}
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}
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