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<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=386782
-->
<head>
  <title>Test for Bug 386782</title>
  <script src="/tests/SimpleTest/SimpleTest.js"></script>
  <script src="/tests/SimpleTest/EventUtils.js"></script>
  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />

  <script>

    // This tests if we can load a document whose root is in designMode,
    // edit it, navigate to a new page, navigate back, still edit, and still
    // undo/redo. Note that this is different from the case where the
    // designMode document is in a frame inside the window, as this means
    // the editable region is not in the root docshell (a less complicated case).

    var gTests = [
      {
        // <html><body><p>designModeDocument</p></body></html>
        url: "file_bug386782_designmode.html",
        name: "designModeNavigate",
        onload(doc) { doc.designMode = "on"; },
        expectedBodyBeforeEdit: "<p>designModeDocument</p>",
        expectedBodyAfterEdit:  "<p>EDITED designModeDocument</p>",
        expectedBodyAfterSecondEdit: "<p>EDITED TWICE designModeDocument</p>",
      },
      {
        // <html><body contentEditable="true"><p>contentEditable</p></body></html>
        url: "file_bug386782_contenteditable.html",
        name: "contentEditableNavigate",
        expectedBodyBeforeEdit: "<p>contentEditable</p>",
        expectedBodyAfterEdit:  "EDITED <br><p>contentEditable</p>",
        expectedBodyAfterSecondEdit: "EDITED TWICE <br><p>contentEditable</p>",
      },
    ];

    var gTest = null;

    add_task(async () => {
      while (gTests.length) {
        gTest = gTests.shift();
        await runTest();
      }
    });

    async function runTest() {
      gTest.window = window.open(gTest.url, gTest.name, "width=500,height=500");
      let e = await new Promise(r => window.onmessage = r);
      is(e.data.persisted, false, "Initial load cannot be persisted");
      if ("onload" in gTest) {
        gTest.onload(gTest.window.document);
      }
      await SimpleTest.promiseFocus(gTest.window);

      gTest.window.document.body.focus();

      // WARNING: If the following test fails, give the setTimeout() in the onload()
      // a bit longer; the doc hasn't had enough time to setup its editor.
      is(gTest.window.document.body.innerHTML, gTest.expectedBodyBeforeEdit, "Is doc setup yet");
      sendString("EDITED ", gTest.window);
      is(gTest.window.document.body.innerHTML, gTest.expectedBodyAfterEdit, "Editing failed.");

      gTest.window.location = "about:blank";
      await new Promise(r => gTest.window.onpagehide = r);
      // The active document is updated synchronously after "pagehide" (and
      // its associated microtasks), so, after waiting for the next global
      // task, gTest.window will be proxying the realm associated with the
      // "about:blank" document.
      // https://html.spec.whatwg.org/multipage/browsing-the-web.html#update-the-session-history-with-the-new-page
      await new Promise(r => setTimeout(r));
      is(gTest.window.location.href, "about:blank", "location.href");
      await SimpleTest.promiseFocus(gTest.window, true);

      gTest.window.history.back();
      e = await new Promise(r => window.onmessage = r);
      // Skip the test if the page is not loaded from the bf-cache when going back.
      if (e.data.persisted) {
        checkStillEditable();
      }
      gTest.window.close();
    }

    function checkStillEditable() {
      // Check that the contents are correct.
      is(gTest.window.document.body.innerHTML, gTest.expectedBodyAfterEdit, "Edited contents still correct?");

      // Check that we can undo/redo and the contents are correct.
      gTest.window.document.execCommand("undo", false, null);
      is(gTest.window.document.body.innerHTML, gTest.expectedBodyBeforeEdit, "Can we undo?");

      gTest.window.document.execCommand("redo", false, null);
      is(gTest.window.document.body.innerHTML, gTest.expectedBodyAfterEdit, "Can we redo?");

      // Check that we can still edit the page.
      gTest.window.document.body.focus();
      sendString("TWICE ", gTest.window);
      is(gTest.window.document.body.innerHTML, gTest.expectedBodyAfterSecondEdit, "Can we still edit?");
    }

  </script>

</head>
<body>
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=386782">Mozilla Bug 386782</a>
<p id="display"></p>
<div id="content" style="display: none">

</div>
<pre id="test">
<script class="testbody" type="text/javascript">

/** Test for Bug 386782 */

SimpleTest.waitForExplicitFinish();

</script>
</pre>
</body>
</html>
