bug 300778. Expose elements with onclick handlers. Patch by Peter Parente. r=aaronlev, sr=neil, a=mkaply

accessible/src/base/nsAccessibilityAtomList.h

@@ -39,7 +39,7 @@
 /******
 
   This file contains the list of all accessibility nsIAtoms and their values
-  
+
   It is designed to be used as inline input to nsAccessibilityAtoms.cpp *only*
   through the magic of C preprocessing.
 
@@ -113,6 +113,7 @@ ACCESSIBILITY_ATOM(id, "id")
 ACCESSIBILITY_ATOM(lang, "lang")
 ACCESSIBILITY_ATOM(multiline, "multiline")
 ACCESSIBILITY_ATOM(name, "name")
+ACCESSIBILITY_ATOM(onclick, "onclick")
 ACCESSIBILITY_ATOM(readonly, "readonly")
 ACCESSIBILITY_ATOM(src, "src")
 ACCESSIBILITY_ATOM(summary, "summary")

accessible/src/base/nsAccessibilityService.cpp

@@ -521,6 +521,7 @@ nsAccessibilityService::CreateHTMLAccessibleByMarkup(nsISupports *aFrame,
            tag == nsAccessibilityAtoms::tbody ||
            tag == nsAccessibilityAtoms::tfoot ||
            tag == nsAccessibilityAtoms::thead ||
+           content->HasAttr(kNameSpaceID_None, nsAccessibilityAtoms::onclick) ||
 #else
   else if (
 #endif

accessible/src/base/nsAccessible.cpp

@@ -1889,21 +1889,56 @@ NS_IMETHODIMP nsAccessible::GetRole(PRUint32 *aRole)
 }
 
 /* PRUint8 getAccNumActions (); */
-NS_IMETHODIMP nsAccessible::GetNumActions(PRUint8 *_retval)
+NS_IMETHODIMP nsAccessible::GetNumActions(PRUint8 *aNumActions)
 {
-  return NS_ERROR_NOT_IMPLEMENTED;
+  nsCOMPtr<nsIContent> content(do_QueryInterface(mDOMNode));
+  if (content && content->HasAttr(kNameSpaceID_None, nsAccessibilityAtoms::onclick)) {
+    *aNumActions = 1;
+  } else {
+    *aNumActions = 0;
+  }
+  return NS_OK;
 }
 
 /* DOMString getAccActionName (in PRUint8 index); */
-NS_IMETHODIMP nsAccessible::GetActionName(PRUint8 index, nsAString& _retval)
+NS_IMETHODIMP nsAccessible::GetActionName(PRUint8 index, nsAString& aName)
 {
-  return NS_ERROR_NOT_IMPLEMENTED;
+  nsCOMPtr<nsIContent> content(do_QueryInterface(mDOMNode));
+  if (content && content->HasAttr(kNameSpaceID_None, nsAccessibilityAtoms::onclick)) {
+    // Action 0 (default action): Click on element
+    if (index == eAction_Click) {
+      nsAccessible::GetTranslatedString(NS_LITERAL_STRING("click"), aName);
+      return NS_OK;
+    }
+    return NS_ERROR_INVALID_ARG;
+  }
+  return NS_ERROR_FAILURE;
 }
 
 /* void doAction (in PRUint8 index); */
 NS_IMETHODIMP nsAccessible::DoAction(PRUint8 index)
 {
-  return NS_ERROR_NOT_IMPLEMENTED;
+  nsCOMPtr<nsIContent> content(do_QueryInterface(mDOMNode));
+  if (content && content->HasAttr(kNameSpaceID_None, nsAccessibilityAtoms::onclick)) {
+    // Action 0 (default action): Click on element
+    if (index == eAction_Click) {
+      nsCOMPtr<nsPresContext> presContext(GetPresContext());
+      if (presContext && content) {
+        nsMouseEvent linkClickEvent(PR_TRUE, NS_MOUSE_LEFT_CLICK, nsnull,
+                                    nsMouseEvent::eReal);
+  
+        nsEventStatus eventStatus = nsEventStatus_eIgnore;
+        content->HandleDOMEvent(presContext,
+                                &linkClickEvent,
+                                nsnull,
+                                NS_EVENT_FLAG_INIT,
+                                &eventStatus);
+        return NS_OK;
+      }
+    }
+    return NS_ERROR_INVALID_ARG;
+  }
+  return NS_ERROR_FAILURE;
 }
 
 /* DOMString getHelp (); */