/*
 * This test checks that keyboard navigation for tabs isn't blocked by content
 */

function test() {
  waitForExplicitFinish();

  let testPage1 = "data:text/html,<html id='tab1'><body><button id='button1'>Tab 1</button></body></html>";
  let testPage2 = "data:text/html,<html id='tab2'><body><button id='button2'>Tab 2</button><script>function preventDefault(event) { event.preventDefault(); event.stopImmediatePropagation(); } window.addEventListener('keydown', preventDefault, true); window.addEventListener('keypress', preventDefault, true);</script></body></html>";
  let testPage3 = "data:text/html,<html id='tab3'><body><button id='button3'>Tab 3</button></body></html>";

  let tab1 = gBrowser.addTab();
  let browser1 = gBrowser.getBrowserForTab(tab1);

  let tab2 = gBrowser.addTab();
  let browser2 = gBrowser.getBrowserForTab(tab2);

  let tab3 = gBrowser.addTab();
  let browser3 = gBrowser.getBrowserForTab(tab3);

  let loadCount = 0;
  function check()
  {
    // wait for all tabs to load
    if (++loadCount != 3) {
      return;
    }

    browser1.removeEventListener("load", check, true);
    browser2.removeEventListener("load", check, true);
    browser3.removeEventListener("load", check, true);
    executeSoon(_run_tab_keyboard_navigation_tests);
  }

  function _run_tab_keyboard_navigation_tests()
  {
    // Kill the animation for simpler test.
    Services.prefs.setBoolPref("browser.tabs.animate", false);

    gBrowser.selectedTab = tab1;
    browser1.contentWindow.focus();

    is(gBrowser.selectedTab, tab1,
       "Tab1 should be activated");
    EventUtils.synthesizeKey("VK_TAB", { ctrlKey: true });
    is(gBrowser.selectedTab, tab2,
       "Tab2 should be activated by pressing Ctrl+Tab on Tab1");

    EventUtils.synthesizeKey("VK_TAB", { ctrlKey: true });
    is(gBrowser.selectedTab, tab3,
       "Tab3 should be activated by pressing Ctrl+Tab on Tab2");

    EventUtils.synthesizeKey("VK_TAB", { ctrlKey: true, shiftKey: true });
    is(gBrowser.selectedTab, tab2,
       "Tab2 should be activated by pressing Ctrl+Shift+Tab on Tab3");

    EventUtils.synthesizeKey("VK_TAB", { ctrlKey: true, shiftKey: true });
    is(gBrowser.selectedTab, tab1,
       "Tab1 should be activated by pressing Ctrl+Shift+Tab on Tab2");

    gBrowser.selectedTab = tab1;
    browser1.contentWindow.focus();

    is(gBrowser.selectedTab, tab1,
       "Tab1 should be activated");
    EventUtils.synthesizeKey("VK_PAGE_DOWN", { ctrlKey: true });
    is(gBrowser.selectedTab, tab2,
       "Tab2 should be activated by pressing Ctrl+PageDown on Tab1");

    EventUtils.synthesizeKey("VK_PAGE_DOWN", { ctrlKey: true });
    is(gBrowser.selectedTab, tab3,
       "Tab3 should be activated by pressing Ctrl+PageDown on Tab2");

    EventUtils.synthesizeKey("VK_PAGE_UP", { ctrlKey: true });
    is(gBrowser.selectedTab, tab2,
       "Tab2 should be activated by pressing Ctrl+PageUp on Tab3");

    EventUtils.synthesizeKey("VK_PAGE_UP", { ctrlKey: true });
    is(gBrowser.selectedTab, tab1,
       "Tab1 should be activated by pressing Ctrl+PageUp on Tab2");

    if (gBrowser.mTabBox._handleMetaAltArrows) {
      gBrowser.selectedTab = tab1;
      browser1.contentWindow.focus();

      let ltr =
        window.getComputedStyle(gBrowser.mTabBox, "").direction == "ltr";
      let advanceKey = ltr ? "VK_RIGHT" : "VK_LEFT";
      let reverseKey = ltr ? "VK_LEFT" : "VK_RIGHT";

      is(gBrowser.selectedTab, tab1,
         "Tab1 should be activated");
      EventUtils.synthesizeKey(advanceKey, { altKey: true, metaKey: true });
      is(gBrowser.selectedTab, tab2,
         "Tab2 should be activated by pressing Ctrl+" + advanceKey + " on Tab1");

      EventUtils.synthesizeKey(advanceKey, { altKey: true, metaKey: true });
      is(gBrowser.selectedTab, tab3,
         "Tab3 should be activated by pressing Ctrl+" + advanceKey + " on Tab2");

      EventUtils.synthesizeKey(reverseKey, { altKey: true, metaKey: true });
      is(gBrowser.selectedTab, tab2,
         "Tab2 should be activated by pressing Ctrl+" + reverseKey + " on Tab3");

      EventUtils.synthesizeKey(reverseKey, { altKey: true, metaKey: true });
      is(gBrowser.selectedTab, tab1,
         "Tab1 should be activated by pressing Ctrl+" + reverseKey + " on Tab2");
    }

    gBrowser.selectedTab = tab2;
    is(gBrowser.selectedTab, tab2,
       "Tab2 should be activated");
    is(gBrowser.tabContainer.selectedIndex, 2,
       "Tab2 index should be 2");

    EventUtils.synthesizeKey("VK_PAGE_DOWN", { ctrlKey: true, shiftKey: true });
    is(gBrowser.selectedTab, tab2,
       "Tab2 should be activated after Ctrl+Shift+PageDown");
    is(gBrowser.tabContainer.selectedIndex, 3,
       "Tab2 index should be 1 after Ctrl+Shift+PageDown");

    EventUtils.synthesizeKey("VK_PAGE_UP", { ctrlKey: true, shiftKey: true });
    is(gBrowser.selectedTab, tab2,
       "Tab2 should be activated after Ctrl+Shift+PageUp");
    is(gBrowser.tabContainer.selectedIndex, 2,
       "Tab2 index should be 2 after Ctrl+Shift+PageUp");

    if (navigator.platform.indexOf("Mac") == 0) {
      gBrowser.selectedTab = tab1;
      browser1.contentWindow.focus();

      // XXX Currently, Command + "{" and "}" don't work if keydown event is
      //     consumed because following keypress event isn't fired.

      let ltr =
        window.getComputedStyle(gBrowser.mTabBox, "").direction == "ltr";
      let advanceKey = ltr ? "}" : "{";
      let reverseKey = ltr ? "{" : "}";

      is(gBrowser.selectedTab, tab1,
         "Tab1 should be activated");

      EventUtils.synthesizeKey(advanceKey, { metaKey: true });
      is(gBrowser.selectedTab, tab2,
         "Tab2 should be activated by pressing Ctrl+" + advanceKey + " on Tab1");

      EventUtils.synthesizeKey(advanceKey, { metaKey: true });
      is(gBrowser.selectedTab, tab3,
         "Tab3 should be activated by pressing Ctrl+" + advanceKey + " on Tab2");

      EventUtils.synthesizeKey(reverseKey, { metaKey: true });
      is(gBrowser.selectedTab, tab2,
         "Tab2 should be activated by pressing Ctrl+" + reverseKey + " on Tab3");

      EventUtils.synthesizeKey(reverseKey, { metaKey: true });
      is(gBrowser.selectedTab, tab1,
         "Tab1 should be activated by pressing Ctrl+" + reverseKey + " on Tab2");
    } else {
      gBrowser.selectedTab = tab2;
      EventUtils.synthesizeKey("VK_F4", { type: "keydown", ctrlKey: true });

      isnot(gBrowser.selectedTab, tab2,
            "Tab2 should be closed by pressing Ctrl+F4 on Tab2");
      is(gBrowser.tabs.length, 3,
        "The count of tabs should be 3 since tab2 should be closed");

      let activeWindow =
        gBrowser.getBrowserForTab(gBrowser.selectedTab).contentWindow;
      // NOTE: keypress event shouldn't be fired since the keydown event should
      //       be consumed by tab2.
        EventUtils.synthesizeKey("VK_F4", { type: "keyup", ctrlKey: true });
        is(gBrowser.tabs.length, 3,
          "The count of tabs should be 3 since renaming key events shouldn't close other tabs");
    }

    gBrowser.selectedTab = tab3;
    while (gBrowser.tabs.length > 1) {
      gBrowser.removeCurrentTab();
    }

    Services.prefs.clearUserPref("browser.tabs.animate");

    finish();
  }

  browser1.addEventListener("load", check, true);
  browser2.addEventListener("load", check, true);
  browser3.addEventListener("load", check, true);

  browser1.contentWindow.location = testPage1;
  browser2.contentWindow.location = testPage2;
  browser3.contentWindow.location = testPage3;
}
