From 313378ad2905fc07be00183b2acc61284c1c2c39 Mon Sep 17 00:00:00 2001
From: wei <>
Date: Sun, 18 Jun 2006 05:02:24 +0000
Subject: Add TCallbackTimer

---
 framework/Web/Javascripts/prado/activecontrols3.js | 97 +++++++++++++++++++++-
 framework/Web/Javascripts/prado/ajax3.js           |  2 +-
 2 files changed, 97 insertions(+), 2 deletions(-)

(limited to 'framework/Web/Javascripts/prado')

diff --git a/framework/Web/Javascripts/prado/activecontrols3.js b/framework/Web/Javascripts/prado/activecontrols3.js
index c0964dcb..50ff39d6 100644
--- a/framework/Web/Javascripts/prado/activecontrols3.js
+++ b/framework/Web/Javascripts/prado/activecontrols3.js
@@ -84,4 +84,99 @@ Prado.WebUI.TAutoComplete = Class.extend(Prado.WebUI.TAutoComplete,
   		if(typeof(result) == "string" && result.length > 0)
 			this.updateChoices(result);
 	}	
-});
\ No newline at end of file
+});
+
+/** 
+ * Callback Timer class. 
+ */
+Prado.WebUI.TCallbackTimer = Base.extend(
+{
+	count : 0,
+	timeout : 0,
+	
+	constructor : function(options)
+	{
+		this.options = Object.extend(
+		{
+			Interval : 1,
+			DecayRate : 0
+		}, options || {})
+		
+		this.onComplete = this.options.onComplete;
+		Prado.WebUI.TCallbackTimer.register(this);
+	},
+	
+	startTimer : function()
+	{
+		this.options.onComplete = this.onRequestComplete.bind(this);
+		setTimeout(this.onTimerEvent.bind(this), 200);
+	},
+	
+	stopTimer : function()
+	{
+		(this.onComplete || Prototype.emptyFunction).apply(this, arguments);
+		this.options.onComplete = undefined;
+		clearTimeout(this.timer);
+		this.timer = undefined;
+		this.count = 0;
+	},
+	
+	onTimerEvent : function()
+	{
+		this.options.params = this.timeout/1000;
+		new Prado.CallbackRequest(this.options.ID, this.options);
+	},
+	
+	onRequestComplete : function()
+	{
+		(this.onComplete || Prototype.emptyFunction).apply(this, arguments);
+		this.timer = setTimeout(this.onTimerEvent.bind(this), this.getNewTimeout())
+	},
+	
+	getNewTimeout : function()
+	{
+		switch(this.options.DecayType)
+		{
+			case 'Exponential':
+				t = (Math.exp(this.options.DecayRate*this.count*this.options.Interval))-1;
+			break;
+			case 'Linear':
+				t = this.options.DecayRate*this.count*this.options.Interval;
+			break;
+			case 'Quadratic':
+				t = this.options.DecayRate*this.count*this.count*this.options.Interval;
+			break;
+			case 'Cubic':
+				t = this.options.DecayRate*this.count*this.count*this.count*this.options.Interval;
+			break;
+			default : t = 0;
+		}
+		this.timeout = (t + this.options.Interval)*1000;
+		this.count++;
+		return parseInt(this.timeout);
+	}
+},
+//class methods
+{
+	timers : {},
+	
+	register : function(timer)
+	{
+		this.timers[timer.options.ID] = timer;
+	},
+	
+	start : function(id)
+	{
+		if(this.timers[id])
+			this.timers[id].startTimer();
+	},	
+	
+	stop : function(id)
+	{
+		if(this.timers[id])
+			this.timers[id].stopTimer();
+	}
+});
+
+
+
diff --git a/framework/Web/Javascripts/prado/ajax3.js b/framework/Web/Javascripts/prado/ajax3.js
index adf8534a..bae60d89 100644
--- a/framework/Web/Javascripts/prado/ajax3.js
+++ b/framework/Web/Javascripts/prado/ajax3.js
@@ -11,7 +11,7 @@ Object.extend(Ajax.Request.prototype,
 	{
 	    var event = Ajax.Request.Events[readyState];
 	    var transport = this.transport, json = this.getHeaderData(Prado.CallbackRequest.DATA_HEADER);
-		
+
 	    if (event == 'Complete') 
 	    {	      
 	      try 
-- 
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