Bug 682618 - Explicitly blur and focus elements to ensure IsCommandEnabled calls are dispatched to correct element. r=gavin

browser/base/content/test/test_contextmenu.html

@@ -27,6 +27,10 @@ function openContextMenuFor(element, shiftkey) {
     // Context menu should be closed before we open it again.
     is(contextMenu.state, "closed", "checking if popup is closed");
 
+    if (lastElement)
+      lastElement.blur();
+    element.focus();
+    lastElement = element;
     var eventDetails = { type : "contextmenu", button : 2, shiftKey : shiftkey };
     synthesizeMouse(element, 2, 2, eventDetails, element.ownerDocument.defaultView);
 }
@@ -555,7 +559,7 @@ function runTest(testNum) {
 
 
 var testNum = 1;
-var subwindow, chromeWin, contextMenu;
+var subwindow, chromeWin, contextMenu, lastElement;
 var text, link, mailto, input, img, canvas, video_ok, video_bad, video_bad2,
     iframe, textarea, contenteditable, inputspell, pagemenu;
 
@@ -577,6 +581,8 @@ function startTest() {
       return;
     }
 
+    lastElement = null;
+
     text   = subwindow.document.getElementById("test-text");
     link   = subwindow.document.getElementById("test-link");
     mailto = subwindow.document.getElementById("test-mailto");