disable drop zone if control is disabled (DevExpress#189)

AjaxControlToolkit.Jasmine/Suites/AjaxFileUploadTests.aspx

@@ -33,15 +33,19 @@
 
     <act:AjaxFileUpload runat="server" ID="TestAjaxFileUpload2" />
 
+    <act:AjaxFileUpload runat="server" ID="DisabledAjaxFileUpload" Enabled="false" />
+
     <script>
         describe("AjaxFileUpload", function() {
 
             var AJAX_FILE_UPLOAD_CLIENT_ID = "<%= TestAjaxFileUpload.ClientID %>";
             var AJAX_FILE_UPLOAD2_CLIENT_ID = "<%= TestAjaxFileUpload2.ClientID %>";
+            var DISABLED_AJAX_FILE_UPLOAD_CLIENT_ID = "<%= DisabledAjaxFileUpload.ClientID %>";
 
             beforeEach(function() {
                 this.ajaxFileUploadExtender = $find(AJAX_FILE_UPLOAD_CLIENT_ID);
                 this.ajaxFileUploadExtender2 = $find(AJAX_FILE_UPLOAD2_CLIENT_ID);
+                this.disabledAjaxFileUploadExtender = $find(DISABLED_AJAX_FILE_UPLOAD_CLIENT_ID);
             });
 
             it("hides upload button inside tabs", function() {
@@ -73,6 +77,17 @@
                 expect(this.ajaxFileUploadExtender.get_uploadHandlerPath()).toBe("/AjaxFileUploadHandler.axd");
             });
 
+            it("reads Enabled property from server", function () {
+                expect(this.disabledAjaxFileUploadExtender.get_enabled()).toBe(false);
+            });
+
+            it("does not allow to drop files if disabled", function () {
+                spyOn(this.disabledAjaxFileUploadExtender._processor, "addFilesToQueue");
+                var fakeEvent = { stopPropagation: function () { }, preventDefault: function () { } };
+                this.disabledAjaxFileUploadExtender._processor.onFileDroppedHandler(fakeEvent);
+                expect(this.disabledAjaxFileUploadExtender._processor.addFilesToQueue).not.toHaveBeenCalled();
+            });
+
         });
     </script>
 </asp:Content>

AjaxControlToolkit/AjaxFileUpload/AjaxFileUpload.cs

@@ -475,6 +475,7 @@ protected override void DescribeComponent(ScriptComponentDescriptor descriptor)
             descriptor.AddProperty("contextKey", ContextKey);
             descriptor.AddProperty("postBackUrl", Page.Request.RawUrl);
             descriptor.AddProperty("serverPollingSupport", ServerPollingSupport);
+            descriptor.AddProperty("enabled", Enabled);
 
             if(ThrobberID != String.Empty) {
                 Control control = FindControl(ThrobberID);

AjaxControlToolkit/Scripts/AjaxFileUpload.js

@@ -584,6 +584,10 @@ Sys.Extended.UI.AjaxFileUpload.ProcessorHtml5 = function(control, elements) {
     this.onFileDroppedHandler = function(e) {
         e.stopPropagation();
         e.preventDefault();
+
+        if(!control.get_enabled())
+            return;
+
         this.addFilesToQueue(e.dataTransfer.files);
 
         if (control.get_autoStartUpload()) {
@@ -1040,6 +1044,13 @@ Sys.Extended.UI.AjaxFileUpload.Control = function(element) {
     /// <setter>set_uploadHandlerPath</setter>
     /// <member name="cP:AjaxControlToolkit.AjaxFileUpload.uploadHandlerPath" />
     this._uploadHandlerPath = '/AjaxFileUploadHandler.axd';
+    /// <summary>
+    /// Whether the control is enabled.
+    /// </summary>
+    /// <getter>get_enabled</getter>
+    /// <setter>set_enabled</setter>
+    /// <member name="cP:AjaxControlToolkit.AjaxFileUpload.enabled" />
+    this._enabled = true;
     this._useHtml5Support = false;
     this._elements = null;
     this._processor = null;
@@ -1650,6 +1661,12 @@ Sys.Extended.UI.AjaxFileUpload.Control.prototype = {
     set_uploadHandlerPath: function (value) {
         this._uploadHandlerPath = value;
     },
+    get_enabled: function () {
+        return this.enabled;
+    },
+    set_enabled: function (value) {
+        this.enabled = value;
+    },
 
     /// <summary>
     /// Occurs when the file upload starts