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 * The Original Code is Firefox Browser Test Code.
 *
 * The Initial Developer of the Original Code is
 * Edward Lee <edward.lee@engineering.uiuc.edu>.
 * Portions created by the Initial Developer are Copyright (C) 2008
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/*
 * Test bug 427559 to make sure focused elements that are no longer on the page
 * will have focus transferred to the window when changing tabs back to that
 * tab with the now-gone element.
 */

// Default focus on a button and have it kill itself on blur
let testPage = 'data:text/html,<body><button onblur="this.parentNode.removeChild(this);"><script>document.body.firstChild.focus();</script></body>';

function test() {
  waitForExplicitFinish();

  gBrowser.selectedTab = gBrowser.addTab();

  gBrowser.selectedBrowser.addEventListener("load", function () {
    gBrowser.selectedBrowser.removeEventListener("load", arguments.callee, true);
    setTimeout(function () {
      var testPageWin = content;

      // The test page loaded, so open an empty tab, select it, then restore
      // the test tab. This causes the test page's focused element to be removed
      // from its document.
      gBrowser.selectedTab = gBrowser.addTab();
      gBrowser.removeCurrentTab();

      // Make sure focus is given to the window because the element is now gone
      is(document.commandDispatcher.focusedWindow, testPageWin,
         "content window is focused");

      gBrowser.removeCurrentTab();
      finish();
    }, 0);
  }, true);

  content.location = testPage;
}
