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Viewing changes to external/xwt/Xwt.WPF/Xwt.WPFBackend/Timeout.cs

  • Committer: Package Import Robot
  • Author(s): Jo Shields
  • Date: 2013-05-12 09:46:03 UTC
  • mto: This revision was merged to the branch mainline in revision 29.
  • Revision ID: package-import@ubuntu.com-20130512094603-mad323bzcxvmcam0
Tags: upstream-4.0.5+dfsg
Import upstream version 4.0.5+dfsg

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external/xwt/Xwt.WPF/Xwt.WPFBackend/Timeout.cs
 
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// 
 
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// Timeout.cs
 
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//  
 
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// Author:
 
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//       Carlos Alberto Cortez <calberto.cortez@gmail.com>
 
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// 
 
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// Copyright (c) 2011 Carlos Alberto Cortez
 
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// 
 
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// Permission is hereby granted, free of charge, to any person obtaining a copy
 
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// of this software and associated documentation files (the "Software"), to deal
 
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// in the Software without restriction, including without limitation the rights
 
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 
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// copies of the Software, and to permit persons to whom the Software is
 
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// furnished to do so, subject to the following conditions:
 
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// 
 
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// The above copyright notice and this permission notice shall be included in
 
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// all copies or substantial portions of the Software.
 
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// 
 
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 
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// THE SOFTWARE.
 
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using System;
 
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using System.Collections.Generic;
 
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using System.Linq;
 
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using System.Text;
 
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using System.Windows;
 
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using System.Windows.Threading;
 
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namespace Xwt.WPFBackend
 
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{
 
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        static class Timeout
 
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        {
 
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                public static uint Add (Func<bool> action, TimeSpan interval, Dispatcher dispatcher)
 
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                {
 
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                        var timer = new DispatcherTimer (DispatcherPriority.Normal, dispatcher);
 
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                        timer.Interval = interval;
 
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                        timer.Tick += delegate {
 
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                                if (!action ())
 
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                                        timer.IsEnabled = false;
 
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                        };
 
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                        uint id = RegisterTimer (timer);
 
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                        timer.IsEnabled = true;
 
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                        return id;
 
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                }
 
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                public static void CancelTimeout (uint id)
 
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                {
 
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                        var timer = UnregisterTimer (id);
 
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                        if (timer != null)
 
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                                timer.IsEnabled = false;
 
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                }
 
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                static uint RegisterTimer (DispatcherTimer timer)
 
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                {
 
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                        lock (locker) {
 
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                                while (timers.ContainsKey (counter))
 
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                                        counter++;
 
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                                timers [counter] = timer;
 
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                                return counter++;
 
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                        }
 
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                }
 
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                static DispatcherTimer UnregisterTimer (uint id)
 
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                {
 
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                        lock (locker) {
 
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                                if (!timers.ContainsKey (id))
 
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                                        return null;
 
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                                var timer = timers [id];
 
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                                timers.Remove (id);
 
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                                return timer;
 
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                        }
 
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                }
 
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                static Dictionary<uint, DispatcherTimer> timers = new Dictionary<uint, DispatcherTimer> ();
 
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                static uint counter;
 
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                static object locker = new object ();
 
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        }
 
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}