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// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
// Copyright (c) 2004 Novell, Inc.
//
// Authors:
// Jackson Harper (jackson@ximian.com)
using System;
using System.Threading;
using System.ComponentModel;
namespace System.Windows.Forms {
[DefaultProperty("Interval")]
[DefaultEvent("Tick")]
[ToolboxItemFilter("System.Windows.Forms", ToolboxItemFilterType.Allow)]
public class Timer : Component {
private bool enabled;
private int interval = 100;
private DateTime expires;
internal Thread thread;
internal bool Busy;
internal IntPtr window;
object control_tag;
internal static readonly int Minimum = 15;
public Timer ()
{
enabled = false;
}
public Timer (IContainer container) : this ()
{
container.Add (this);
}
[DefaultValue (false)]
public virtual bool Enabled {
get {
return enabled;
}
set {
if (value != enabled) {
enabled = value;
if (value) {
// Use AddTicks so we get some rounding
expires = DateTime.UtcNow.AddMilliseconds (interval > Minimum ? interval : Minimum);
thread = Thread.CurrentThread;
XplatUI.SetTimer (this);
} else {
XplatUI.KillTimer (this);
thread = null;
}
}
}
}
[DefaultValue (100)]
public int Interval {
get {
return interval;
}
set {
if (value <= 0)
throw new ArgumentOutOfRangeException ("Interval", string.Format ("'{0}' is not a valid value for Interval. Interval must be greater than 0.", value));
if (interval == value) {
return;
}
interval = value;
// Use AddTicks so we get some rounding
expires = DateTime.UtcNow.AddMilliseconds (interval > Minimum ? interval : Minimum);
if (enabled == true) {
XplatUI.KillTimer (this);
XplatUI.SetTimer (this);
}
}
}
[Localizable(false)]
[Bindable(true)]
[TypeConverter(typeof(StringConverter))]
[DefaultValue(null)]
[MWFCategory("Data")]
public object Tag {
get {
return control_tag;
}
set {
control_tag = value;
}
}
public void Start ()
{
Enabled = true;
}
public void Stop ()
{
Enabled = false;
}
internal DateTime Expires {
get {
return expires;
}
}
public event EventHandler Tick;
public override string ToString ()
{
return base.ToString () + ", Interval: " + Interval;
}
internal void Update (DateTime update)
{
expires = update.AddMilliseconds (interval > Minimum ? interval : Minimum);
}
internal void FireTick ()
{
OnTick (EventArgs.Empty);
}
protected virtual void OnTick (EventArgs e)
{
if (Tick != null)
Tick (this, e);
}
protected override void Dispose (bool disposing)
{
base.Dispose (disposing);
Enabled = false;
}
internal void TickHandler (object sender, EventArgs e)
{
OnTick (e);
}
}
}
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