diff options
Diffstat (limited to 'framework/Web/Javascripts/prado/ajax3.js')
| -rw-r--r-- | framework/Web/Javascripts/prado/ajax3.js | 130 |
1 files changed, 75 insertions, 55 deletions
diff --git a/framework/Web/Javascripts/prado/ajax3.js b/framework/Web/Javascripts/prado/ajax3.js index 8ea76e10..2caaf553 100644 --- a/framework/Web/Javascripts/prado/ajax3.js +++ b/framework/Web/Javascripts/prado/ajax3.js @@ -16,6 +16,7 @@ Object.extend(Ajax.Request.prototype, {
try
{
+ Prado.CallbackRequest.updatePageState(this,transport);
Ajax.Responders.dispatch('on' + transport.status, this, transport, json);
Prado.CallbackRequest.dispatchActions(transport,this.getHeaderData(Prado.CallbackRequest.ACTION_HEADER));
@@ -104,13 +105,13 @@ Object.extend(Prado.CallbackRequest, */
ERROR_HEADER : 'X-PRADO-ERROR',
/**
- * Callback request queque.
+ * Page state header name.
*/
- Queque : [],
+ PAGESTATE_HEADER : 'X-PRADO-PAGESTATE',
/**
- * Requests In progress.
+ * Current requests in progress.
*/
- InProgress : [],
+ requestInProgress : null,
/**
* Dispatch callback response actions.
@@ -223,53 +224,71 @@ Object.extend(Prado.CallbackRequest, },
/**
- * Dispatch quequed requests, and set a timeout.
+ * Dispatch a priority request, it will call abortRequestInProgress first.
*/
- dispatchQuequedRequest : function()
+ dispatchPriorityRequest : function(callback)
{
- requests = Prado.CallbackRequest;
- if(requests.InProgress.length == 0 && requests.Queque.length > 0)
+ Logger.info("priority request "+callback.id)
+ this.abortRequestInProgress();
+
+ callback.request = new Ajax.Request(callback.url, callback.options);
+ callback.timeout = setTimeout(function()
{
- var item = requests.Queque.pop();
- item.callback = new Ajax.Request(item.url, item.options);
- item.callback.callbackID = item.id;
- item.timeout = setTimeout(function()
- {
- requests.removeInProgress(item.callback);
- }, item.options.TimeOut);
- requests.InProgress.push(item);
+ Logger.warn("priority timeout");
+ Prado.CallbackRequest.abortRequestInProgress();
+ },callback.options.RequestTimeOut);
+
+ this.requestInProgress = callback;
+ Logger.info("dispatched "+this.requestInProgress)
+ },
+
+ /**
+ * Dispatch a normal request, no timeouts or aborting of requests.
+ */
+ dispatchNormalRequest : function(callback)
+ {
+ Logger.info("dispatching normal request");
+ new Ajax.Request(callback.url, callback.options);
+ },
+
+ /**
+ * Abort the current priority request in progress.
+ */
+ abortRequestInProgress : function()
+ {
+ inProgress = Prado.CallbackRequest.requestInProgress;
+ if(inProgress)
+ {
+ Logger.warn("aborted "+inProgress.id)
+ inProgress.request.transport.abort();
+ clearTimeout(inProgress.timeout);
+ Prado.CallbackRequest.requestInProgress = null;
}
},
/**
- * Remove a request currently in progress and call dispatchQuequedRequest.
+ * Updates the page state. It will update only if EnablePageStateUpdate and
+ * HasPriority options are both true.
*/
- removeInProgress : function(request)
+ updatePageState : function(request, transport)
{
- if(request && request.callbackID)
+ pagestate = $(this.FIELD_CALLBACK_PAGESTATE);
+ if(request.options.EnablePageStateUpdate && request.options.HasPriority && pagestate)
{
- var stillInProgress = [];
- requests = Prado.CallbackRequest;
- requests.InProgress.each(function(item)
- {
- if(item.callback.callbackID == request.callbackID)
- {
- item.callback.transport.abort();
- request.transport.abort();
- clearTimeout(item.timeout);
- }
- else
- {
- stillInProgress.push(item);
- }
- })
- requests.InProgress = stillInProgress;
+ Logger.warn("updating page state");
+ pagestate.value = request.header(this.PAGESTATE_HEADER);
}
- requests.dispatchQuequedRequest();
}
})
-Ajax.Responders.register({onComplete : Prado.CallbackRequest.removeInProgress});
+/**
+ * Automatically aborts the current request when a priority request has returned.
+ */
+Ajax.Responders.register({onComplete : function(request)
+{
+ if(request.options.HasPriority)
+ Prado.CallbackRequest.abortRequestInProgress();
+}});
//Add HTTP exception respones when logger is enabled.
Event.OnLoad(function()
@@ -291,10 +310,7 @@ Prado.CallbackRequest.prototype = /**
* Callback options, including onXXX events.
*/
- options :
- {
- TimeOut : 30000 // 30 second timeout.
- },
+ options : { },
/**
* Callback target ID. E.g. $control->getUniqueID();
@@ -304,34 +320,39 @@ Prado.CallbackRequest.prototype = /**
* Current callback request.
*/
- callback : null,
+ request : null,
/**
* Prepare and inititate a callback request.
*/
initialize : function(id, options)
{
- Object.extend(this.options, options || {});
-
this.id = id;
-
- var request =
+
+ this.options =
{
+ RequestTimeOut : 30000, // 30 second timeout.
+ EnablePageStateUpdate : true,
+ HasPriority : true,
+ CausesValidation : true,
+ ValidationGroup : null,
+ PostInputs : true,
postBody : this._getPostData(),
parameters : ''
}
-
- Object.extend(this.options, request);
-
- if(this.options.CausesValidation != false && typeof(Prado.Validation) != "undefined")
+ Object.extend(this.options, options || {});
+
+ if(this.options.CausesValidation && typeof(Prado.Validation) != "undefined")
{
var form = this.options.Form || Prado.Validation.getForm();
if(Prado.Validation.validate(form,this.options.ValidationGroup,this) == false)
return;
}
- Prado.CallbackRequest.Queque.push(this);
- Prado.CallbackRequest.dispatchQuequedRequest();
+ if(this.options.HasPriority)
+ Prado.CallbackRequest.dispatchPriorityRequest(this);
+ else
+ Prado.CallbackRequest.dispatchNormalRequest(this);
},
/**
@@ -343,7 +364,7 @@ Prado.CallbackRequest.prototype = {
var data = {};
var callback = Prado.CallbackRequest;
- if(this.options.PostState != false)
+ if(this.options.PostInputs != false)
{
callback.PostDataLoaders.each(function(name)
{
@@ -378,8 +399,7 @@ Prado.Callback = function(UniqueID, parameter, onSuccess, options) var callback =
{
'params' : parameter || '',
- 'onSuccess' : onSuccess || Prototype.emptyFunction,
- 'CausesValidation' : true
+ 'onSuccess' : onSuccess || Prototype.emptyFunction
};
Object.extend(callback, options || {});
|