<?xml version="1.0"?>
<?xml-stylesheet href="chrome://global/skin" type="text/css"?>
<?xml-stylesheet href="chrome://mochikit/content/tests/SimpleTest/test.css"
                 type="text/css"?>

<window xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
        title="XUL state change event tests">

  <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js" />
  <script src="chrome://mochikit/content/tests/SimpleTest/EventUtils.js"/>

  <script type="application/javascript"
          src="../common.js" />
  <script type="application/javascript"
          src="../role.js" />
  <script type="application/javascript"
          src="../states.js" />
  <script type="application/javascript"
          src="../promisified-events.js" />

  <script type="application/javascript">
  <![CDATA[
    function offscreenChangeEvent(acc, enabled) {
      return [
        EVENT_STATE_CHANGE,
        event => {
          const scEvent = event.QueryInterface(nsIAccessibleStateChangeEvent);
          return event.accessible == acc &&
            scEvent.state == STATE_OFFSCREEN &&
            scEvent.isEnabled == enabled;
        }
      ];
    }

    async function testTabpanels() {
      const tabs = getNode("tabs");
      is(tabs.selectedIndex, 0, "tab1 initially selected");
      const panel1 = getAccessible("panel1");
      testStates(panel1, 0, 0, STATE_OFFSCREEN);
      const panel2 = getAccessible("panel2");
      testStates(panel2, STATE_OFFSCREEN);
      const panel3 = getAccessible("panel3");
      testStates(panel3, STATE_OFFSCREEN);

      let events = waitForEvents([
        offscreenChangeEvent(panel1, true),
        offscreenChangeEvent(panel2, false)
      ]);
      info("Selecting tab2");
      tabs.selectedIndex = 1;
      await events;

      events = waitForEvents([
        offscreenChangeEvent(panel2, true),
        offscreenChangeEvent(panel3, false)
      ]);
      info("Selecting tab3");
      tabs.selectedIndex = 2;
      await events;

      events = waitForEvents([
        offscreenChangeEvent(panel3, true),
        offscreenChangeEvent(panel1, false)
      ]);
      info("Selecting tab1");
      tabs.selectedIndex = 0;
      await events;
    }

    async function testPressed() {
      const toolbarbuttonCheckbox = getNode("toolbarbuttonCheckbox");
      testStates(toolbarbuttonCheckbox, 0, 0, STATE_PRESSED);
      info("Checking toolbarbuttonCheckbox");
      let changed = waitForStateChange(toolbarbuttonCheckbox, STATE_PRESSED, true);
      toolbarbuttonCheckbox.setAttribute("checked", true);
      await changed;
      info("Unchecking toolbarbuttonCheckbox");
      changed = waitForStateChange(toolbarbuttonCheckbox, STATE_PRESSED, false);
      toolbarbuttonCheckbox.removeAttribute("checked");
      await changed;
    }

    async function doTests() {
      await testTabpanels();
      await testPressed();
      SimpleTest.finish();
    }

    SimpleTest.waitForExplicitFinish();
    addA11yLoadEvent(doTests);
  ]]>
  </script>

  <hbox flex="1" style="overflow: auto;">
    <body xmlns="http://www.w3.org/1999/xhtml">
      <p id="display"></p>
      <div id="content" style="display: none"></div>
      <pre id="test">
      </pre>
    </body>

    <tabbox id="tabbox" selectedIndex="0">
      <tabs id="tabs">
        <tab id="tab1" label="tab1"/>
        <tab id="tab2" label="tab2"/>
        <tab id="tab3" label="tab3"/>
      </tabs>
      <tabpanels>
        <hbox id="panel1"><button label="b1"/></hbox>
        <hbox id="panel2"><button label="b2"/></hbox>
        <hbox id="panel3"><button label="b3"/></hbox>
      </tabpanels>
    </tabbox>

    <toolbarbutton id="toolbarbuttonCheckbox" type="checkbox">toolbarbuttonCheckbox</toolbarbutton>
  </hbox>
</window>