143 lines
3.4 KiB
C#
143 lines
3.4 KiB
C#
// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in 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,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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// Copyright (c) 2006 Novell, Inc. (http://www.novell.com)
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//
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// Authors:
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// Miguel de Icaza (miguel@novell.com)
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//
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using System;
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using System.Collections;
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using System.Threading;
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namespace System.Windows.Threading {
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public class DispatcherTimer {
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DispatcherPriority priority;
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Dispatcher target_dispatcher;
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long interval;
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EventHandler callback;
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Timer timer;
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object tag;
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public DispatcherTimer ()
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: this (DispatcherPriority.Background, Dispatcher.CurrentDispatcher)
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{
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}
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public DispatcherTimer (DispatcherPriority priority)
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: this (priority, Dispatcher.CurrentDispatcher)
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{
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}
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public DispatcherTimer (DispatcherPriority priority, Dispatcher dispatcher)
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: this (TimeSpan.Zero, priority, null, dispatcher)
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{
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}
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public DispatcherTimer (TimeSpan interval, DispatcherPriority priority,
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EventHandler callback, Dispatcher dispatcher)
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{
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this.priority = priority;
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this.target_dispatcher = dispatcher;
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this.interval = interval.Ticks;
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this.callback = callback;
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}
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public void Start ()
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{
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if (timer == null){
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long repeat_interval = interval;
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if (repeat_interval == 0)
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repeat_interval = 1;
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timer = new Timer (new TimerCallback (timer_tick),
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null, new TimeSpan (interval),
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new TimeSpan (repeat_interval));
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}
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}
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void timer_tick (object state)
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{
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target_dispatcher.BeginInvoke (priority, (ThreadStart) delegate {
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EventHandler h = Tick;
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if (h != null)
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h (this, EventArgs.Empty);
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if (callback != null)
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callback (this, EventArgs.Empty);
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});
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}
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public void Stop ()
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{
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if (timer == null)
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return;
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timer.Dispose ();
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timer = null;
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}
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public Dispatcher Dispatcher {
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get {
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return target_dispatcher;
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}
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}
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public TimeSpan Interval {
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get {
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return new TimeSpan (interval);
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}
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set {
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if (interval == value.Ticks)
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return;
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interval = value.Ticks;
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if (timer != null)
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timer.Change (new TimeSpan (interval),
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new TimeSpan (interval));
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}
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}
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public bool IsEnabled {
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get {
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return timer != null;
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}
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set {
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if (value && timer == null)
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Start ();
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if (value == false && timer != null)
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Stop ();
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}
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}
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public object Tag {
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get {
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return tag;
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}
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set {
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tag = value;
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}
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}
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public event EventHandler Tick;
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}
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}
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