michael@0: function test() {
michael@0:   gPrefService.setBoolPref("browser.ctrlTab.previews", true);
michael@0: 
michael@0:   gBrowser.addTab();
michael@0:   gBrowser.addTab();
michael@0:   gBrowser.addTab();
michael@0: 
michael@0:   checkTabs(4);
michael@0: 
michael@0:   ctrlTabTest([2]      , 1, 0);
michael@0:   ctrlTabTest([2, 3, 1], 2, 2);
michael@0:   ctrlTabTest([]       , 4, 2);
michael@0: 
michael@0:   {
michael@0:     let selectedIndex = gBrowser.tabContainer.selectedIndex;
michael@0:     pressCtrlTab();
michael@0:     pressCtrlTab(true);
michael@0:     releaseCtrl();
michael@0:     is(gBrowser.tabContainer.selectedIndex, selectedIndex,
michael@0:        "Ctrl+Tab -> Ctrl+Shift+Tab keeps the selected tab");
michael@0:   }
michael@0: 
michael@0:   { // test for bug 445369
michael@0:     let tabs = gBrowser.tabs.length;
michael@0:     pressCtrlTab();
michael@0:     EventUtils.synthesizeKey("w", { ctrlKey: true });
michael@0:     is(gBrowser.tabs.length, tabs - 1, "Ctrl+Tab -> Ctrl+W removes one tab");
michael@0:     releaseCtrl();
michael@0:   }
michael@0: 
michael@0:   { // test for bug 667314
michael@0:     let tabs = gBrowser.tabs.length;
michael@0:     pressCtrlTab();
michael@0:     pressCtrlTab(true);
michael@0:     EventUtils.synthesizeKey("w", { ctrlKey: true });
michael@0:     is(gBrowser.tabs.length, tabs - 1, "Ctrl+Tab -> Ctrl+W removes the selected tab");
michael@0:     releaseCtrl();
michael@0:   }
michael@0: 
michael@0:   gBrowser.addTab();
michael@0:   checkTabs(3);
michael@0:   ctrlTabTest([2, 1, 0], 7, 1);
michael@0: 
michael@0:   gBrowser.addTab();
michael@0:   checkTabs(4);
michael@0: 
michael@0:   { // test for bug 445369
michael@0:     selectTabs([1, 2, 0]);
michael@0: 
michael@0:     let selectedTab = gBrowser.selectedTab;
michael@0:     let tabToRemove = gBrowser.tabs[1];
michael@0: 
michael@0:     pressCtrlTab();
michael@0:     pressCtrlTab();
michael@0:     EventUtils.synthesizeKey("w", { ctrlKey: true });
michael@0:     ok(!tabToRemove.parentNode,
michael@0:        "Ctrl+Tab*2 -> Ctrl+W removes the second most recently selected tab");
michael@0: 
michael@0:     pressCtrlTab(true);
michael@0:     pressCtrlTab(true);
michael@0:     releaseCtrl();
michael@0:     ok(selectedTab.selected,
michael@0:        "Ctrl+Tab*2 -> Ctrl+W -> Ctrl+Shift+Tab*2 keeps the selected tab");
michael@0:   }
michael@0:   gBrowser.removeTab(gBrowser.tabContainer.lastChild);
michael@0:   checkTabs(2);
michael@0: 
michael@0:   ctrlTabTest([1], 1, 0);
michael@0: 
michael@0:   gBrowser.removeTab(gBrowser.tabContainer.lastChild);
michael@0:   checkTabs(1);
michael@0: 
michael@0:   { // test for bug 445768
michael@0:     let focusedWindow = document.commandDispatcher.focusedWindow;
michael@0:     let eventConsumed = true;
michael@0:     let detectKeyEvent = function (event) {
michael@0:       eventConsumed = event.defaultPrevented;
michael@0:     };
michael@0:     document.addEventListener("keypress", detectKeyEvent, false);
michael@0:     pressCtrlTab();
michael@0:     document.removeEventListener("keypress", detectKeyEvent, false);
michael@0:     ok(eventConsumed, "Ctrl+Tab consumed by the tabbed browser if one tab is open");
michael@0:     is(focusedWindow, document.commandDispatcher.focusedWindow,
michael@0:        "Ctrl+Tab doesn't change focus if one tab is open");
michael@0:   }
michael@0: 
michael@0:   // cleanup
michael@0:   if (gPrefService.prefHasUserValue("browser.ctrlTab.previews"))
michael@0:     gPrefService.clearUserPref("browser.ctrlTab.previews");
michael@0: 
michael@0:   /* private utility functions */
michael@0: 
michael@0:   function pressCtrlTab(aShiftKey)
michael@0:     EventUtils.synthesizeKey("VK_TAB", { ctrlKey: true, shiftKey: !!aShiftKey });
michael@0: 
michael@0:   function releaseCtrl()
michael@0:     EventUtils.synthesizeKey("VK_CONTROL", { type: "keyup" });
michael@0: 
michael@0:   function isOpen()
michael@0:     ctrlTab.isOpen;
michael@0: 
michael@0:   function checkTabs(aTabs) {
michael@0:     var tabs = gBrowser.tabs.length;
michael@0:     if (tabs != aTabs) {
michael@0:       while (gBrowser.tabs.length > 1)
michael@0:         gBrowser.removeCurrentTab();
michael@0:       throw "expected " + aTabs + " open tabs, got " + tabs;
michael@0:     }
michael@0:   }
michael@0: 
michael@0:   function selectTabs(tabs) {
michael@0:     tabs.forEach(function (index) {
michael@0:       gBrowser.selectedTab = gBrowser.tabs[index];
michael@0:     });
michael@0:   }
michael@0: 
michael@0:   function ctrlTabTest(tabsToSelect, tabTimes, expectedIndex) {
michael@0:     selectTabs(tabsToSelect);
michael@0: 
michael@0:     var indexStart = gBrowser.tabContainer.selectedIndex;
michael@0:     var tabCount = gBrowser.tabs.length;
michael@0:     var normalized = tabTimes % tabCount;
michael@0:     var where = normalized == 1 ? "back to the previously selected tab" :
michael@0:                 normalized + " tabs back in most-recently-selected order";
michael@0: 
michael@0:     for (let i = 0; i < tabTimes; i++) {
michael@0:       pressCtrlTab();
michael@0: 
michael@0:       if (tabCount > 2)
michael@0:        is(gBrowser.tabContainer.selectedIndex, indexStart,
michael@0:          "Selected tab doesn't change while tabbing");
michael@0:     }
michael@0: 
michael@0:     if (tabCount > 2) {
michael@0:       ok(isOpen(),
michael@0:          "With " + tabCount + " tabs open, Ctrl+Tab opens the preview panel");
michael@0: 
michael@0:       releaseCtrl();
michael@0: 
michael@0:       ok(!isOpen(),
michael@0:          "Releasing Ctrl closes the preview panel");
michael@0:     } else {
michael@0:       ok(!isOpen(),
michael@0:          "With " + tabCount + " tabs open, Ctrl+Tab doesn't open the preview panel");
michael@0:     }
michael@0: 
michael@0:     is(gBrowser.tabContainer.selectedIndex, expectedIndex,
michael@0:        "With "+ tabCount +" tabs open and tab " + indexStart
michael@0:        + " selected, Ctrl+Tab*" + tabTimes + " goes " + where);
michael@0:   }
michael@0: }