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//
// Timer.cs
//
// Author:
// Igor Zelmanovich <igorz@mainsoft.com>
//
// (C) 2007 Mainsoft, Inc. http://www.mainsoft.com
//
//
// 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.
//
using System;
using System.Collections.Generic;
using System.Text;
using System.ComponentModel;
namespace System.Web.UI
{
[DefaultProperty ("Interval")]
[Designer ("System.Web.UI.Design.TimerDesigner, System.Web.Extensions.Design, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35")]
[NonVisualControl]
[SupportsEventValidation]
[DefaultEvent ("Tick")]
public class Timer : Control, IPostBackEventHandler, IScriptControl
{
ScriptManager _scriptManager;
[Category ("Behavior")]
[DefaultValue (true)]
public bool Enabled {
get {
object o = ViewState ["Enabled"];
if (o == null)
return true;
return (bool) o;
}
set {
ViewState ["Enabled"] = value;
}
}
[DefaultValue (60000)]
[Category ("Behavior")]
public int Interval {
get {
object o = ViewState ["Interval"];
if (o == null)
return 60000;
return (int) o;
}
set {
ViewState ["Interval"] = value;
}
}
[DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
[Browsable (false)]
[EditorBrowsable (EditorBrowsableState.Never)]
public override bool Visible {
get {
return base.Visible;
}
set {
throw new NotImplementedException ();
}
}
ScriptManager ScriptManager {
get {
if (_scriptManager == null) {
_scriptManager = ScriptManager.GetCurrent (Page);
if (_scriptManager == null)
throw new InvalidOperationException (String.Format ("The control with ID '{0}' requires a ScriptManager on the page. The ScriptManager must appear before any controls that need it.", ID));
}
return _scriptManager;
}
}
[Category ("Action")]
public event EventHandler<EventArgs> Tick;
protected virtual IEnumerable<ScriptDescriptor> GetScriptDescriptors () {
ScriptControlDescriptor descriptor = new ScriptControlDescriptor ("Sys.UI._Timer", this.ClientID);
descriptor.AddProperty ("enabled", Enabled);
descriptor.AddProperty ("interval", Interval);
descriptor.AddProperty ("uniqueID", UniqueID);
yield return descriptor;
}
protected virtual IEnumerable<ScriptReference> GetScriptReferences () {
ScriptReference script;
script = new ScriptReference ("MicrosoftAjaxTimer.js", String.Empty);
script.NotifyScriptLoaded = false;
yield return script;
}
protected internal override void OnPreRender (EventArgs e) {
base.OnPreRender (e);
ScriptManager.RegisterScriptControl (this);
}
protected virtual void OnTick (EventArgs e) {
if (Tick != null)
Tick (this, e);
}
protected virtual void RaisePostBackEvent (string eventArgument) {
OnTick (EventArgs.Empty);
}
protected internal override void Render (HtmlTextWriter writer) {
Page.ClientScript.RegisterForEventValidation (UniqueID);
writer.AddStyleAttribute (HtmlTextWriterStyle.Display, "none");
writer.AddStyleAttribute (HtmlTextWriterStyle.Visibility, "hidden");
writer.AddAttribute (HtmlTextWriterAttribute.Id, ClientID);
writer.RenderBeginTag (HtmlTextWriterTag.Span);
base.Render (writer);
writer.RenderEndTag ();
ScriptManager.RegisterScriptDescriptors (this);
}
#region IPostBackEventHandler Members
void IPostBackEventHandler.RaisePostBackEvent (string eventArgument) {
RaisePostBackEvent (eventArgument);
}
#endregion
#region IScriptControl Members
IEnumerable<ScriptDescriptor> IScriptControl.GetScriptDescriptors () {
return GetScriptDescriptors ();
}
IEnumerable<ScriptReference> IScriptControl.GetScriptReferences () {
return GetScriptReferences ();
}
#endregion
}
}
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