From 5916ac22da8686eebe47cd0f48ba33a601f4a7fb Mon Sep 17 00:00:00 2001
From: Wolfgang Sourdeau <wsourdeau@inverse.ca>
Date: Fri, 6 Aug 2010 18:22:49 +0000
Subject: [PATCH] Monotone-Parent: 52144e5b0340281632f7e7aadc9ca155bba27c61
 Monotone-Revision: e2123af89707f4bc2b9f980dfef0f57731970142

Monotone-Author: wsourdeau@inverse.ca
Monotone-Date: 2010-08-06T18:22:49
Monotone-Branch: ca.inverse.sogo
---
 ChangeLog                        |  3 +++
 UI/WebServerResources/generic.js | 38 ++++++++++++++++++++++++++++++++
 2 files changed, 41 insertions(+)

diff --git a/ChangeLog b/ChangeLog
index eb58201d6..b5e489b02 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,8 @@
 2010-08-06  Wolfgang Sourdeau  <wsourdeau@inverse.ca>
 
+	* UI/WebServerResources/generic.js: (AjaxRequestsChain): new class
+	that implements the chaining of ajax requests.
+
 	* UI/WebServerResources/MailerUI.js: (dropAction): ensure that the
 	destination mailbox is in the same mail account as the message
 	being dragged.
diff --git a/UI/WebServerResources/generic.js b/UI/WebServerResources/generic.js
index 1ca0491e0..59ee29e3e 100644
--- a/UI/WebServerResources/generic.js
+++ b/UI/WebServerResources/generic.js
@@ -318,6 +318,44 @@ function triggerAjaxRequest(url, callback, userdata, content, headers) {
     return http;
 }
 
+function AjaxRequestsChain(callback, callbackData) {
+    this.requests = [];
+    this.counter = 0;
+    this.callback = callback;
+    this.callbackData = callbackData;
+}
+
+AjaxRequestsChain.prototype = {
+    requests: null,
+    counter: 0,
+    callback: null,
+    callbackData: null,
+
+    _step: function ARC__step() {
+        if (this.counter < this.requests.length) {
+            var request = this.requests[this.counter];
+            this.counter++;
+            var chain = this;
+            var origCallback = request[1];
+            request[1] = function ARC__step_callback(http) {
+                if (origCallback) {
+                    http.callback = origCallback;
+                    origCallback.apply(http, [http]);
+                }
+                chain._step();
+            };
+            triggerAjaxRequest.apply(window, request);
+        }
+        else {
+            this.callback.apply(this, [this.callbackData]);
+        }
+    },
+
+    start: function ARC_start() {
+        this._step();
+    }
+};
+
 function startAnimation(parent, nextNode) {
     var anim = $("progressIndicator");
     if (!anim) {