Bug 463227 - in the All Tabs panel, TAB key should move focus to the preview. r=sdwilsh

browser/base/content/browser.css

@@ -98,6 +98,10 @@ window[chromehidden~="toolbar"] toolbar:not(.toolbar-primary):not(.chromeclass-m
 }
 
 /* Tab Previews */
+#ctrlTab-panel {
+  -moz-user-focus: normal;
+}
+
 .ctrlTab-thumbnail {
   -moz-binding: url("chrome://browser/content/browser-tabPreviews.xml#ctrlTab-thumbnail");
 }

browser/base/content/test/browser_ctrlTab.js

@@ -1,4 +1,6 @@
 function test() {
+  waitForExplicitFinish();
+
   gBrowser.addTab();
   gBrowser.addTab();
   gBrowser.addTab();
@@ -69,6 +71,47 @@ function test() {
        "Ctrl+Tab doesn't change focus if one tab is open");
   }
 
+  gBrowser.addTab();
+  gBrowser.addTab();
+  gBrowser.addTab();
+
+  assertTabs(4);
+  selectTabs([0, 1, 2, 3]);
+  pressCtrlTab();
+  ctrlTab.panel.addEventListener("popupshown", stickyTests, false);
+
+  function stickyTests() {
+    ctrlTab.panel.removeEventListener("popupshown", stickyTests, false);
+
+    EventUtils.synthesizeKey("f", { ctrlKey: true });
+    is(document.activeElement, ctrlTab.searchField.inputField,
+       "Ctrl+Tab -> Ctrl+F focuses the panel's search field");
+
+    releaseCtrl();
+    ok(isOpen(),
+       "panel is sticky after focusing the search field and releasing the Ctrl key");
+
+    // blur the search field
+    EventUtils.synthesizeKey("VK_TAB", {});
+    isnot(document.activeElement, ctrlTab.searchField.inputField,
+          "Tab key blurs the panel's search field");
+
+    // advance selection and close panel
+    EventUtils.synthesizeKey("VK_TAB", {});
+    EventUtils.synthesizeKey("VK_RETURN", {});
+    ok(!isOpen(),
+       "Enter key closes the panel");
+    is(gBrowser.tabContainer.selectedIndex, 1,
+       "Tab key advances the selection while the panel is sticky");
+
+    gBrowser.removeCurrentTab();
+    gBrowser.removeCurrentTab();
+    gBrowser.removeCurrentTab();
+    assertTabs(1);
+    finish();
+  }
+
+
   /* private utility functions */
 
   function pressCtrlTab(aShiftKey)