Implement accessible objects for xforms select controls. Patch by Alexander Surkov <surkov.alexander@gmail.com>. r=aaronr, aaronlev, b=348053

accessible/public/nsIAccessibleProvider.idl

@@ -124,9 +124,12 @@ interface nsIAccessibleProvider : nsISupports
    const long XFormsSliderRange = 0x00002007;
    /** Used for xforms elements that provide accessible object for itself as
     * well for anonymous content. This property are used for upload,
-    * input[type="xsd:gDay"] and input[type="xsd:gMonth"].
-    */
+    * input[type="xsd:gDay"] and input[type="xsd:gMonth"] */
    const long XFormsContainer = 0x00002008;
+   /** Used for select and select1 that are implemented using host document's
+    * native widget. For example, a select1 in a xhtml document may be
+    * represented by the native html control html:select */
+   const long XFormsSelect = 0x00002009;
 
   /**
    * Return one of constants declared above.

accessible/src/base/nsAccessibilityService.cpp

@@ -1574,6 +1574,9 @@ nsresult nsAccessibilityService::GetAccessibleByType(nsIDOMNode *aNode,
     case nsIAccessibleProvider::XFormsContainer:
       *aAccessible = new nsXFormsContainerAccessible(aNode, weakShell);
       break;
+    case nsIAccessibleProvider::XFormsSelect:
+      *aAccessible = new nsXFormsSelectAccessible(aNode, weakShell);
+      break;
 #endif
 
     default:

accessible/src/xforms/nsXFormsFormControlsAccessible.cpp

@@ -380,3 +380,28 @@ nsXFormsRangeAccessible::GetCurrentValue(double *aCurrentValue)
   return error;
 }
 
+
+// nsXFormsSelectAccessible
+
+nsXFormsSelectAccessible::
+  nsXFormsSelectAccessible(nsIDOMNode *aNode, nsIWeakReference *aShell):
+  nsXFormsContainerAccessible(aNode, aShell)
+{
+}
+
+NS_IMETHODIMP
+nsXFormsSelectAccessible::GetState(PRUint32 *aState)
+{
+  nsresult rv = nsXFormsContainerAccessible::GetState(aState);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  PRUint32 isInRange = nsIXFormsUtilityService::STATE_NOT_A_RANGE;
+  rv = sXFormsService->IsInRange(mDOMNode, &isInRange);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  if (isInRange == nsIXFormsUtilityService::STATE_OUT_OF_RANGE)
+    *aState |= STATE_INVALID;
+
+  return NS_OK;
+}
+

accessible/src/xforms/nsXFormsFormControlsAccessible.h

@@ -149,5 +149,19 @@ public:
   NS_IMETHOD GetCurrentValue(double *aCurrentValue);
 };
 
+
+/**
+ * Accessible object for xforms:select and xforms:select1 that are implemented
+ * using host document's native widget.
+ */
+
+class nsXFormsSelectAccessible : public nsXFormsContainerAccessible
+{
+public:
+  nsXFormsSelectAccessible(nsIDOMNode *aNode, nsIWeakReference *aShell);
+
+  NS_IMETHOD GetState(PRUint32 *aState);
+};
+
 #endif