<!doctype html>
<html>
<head>
<meta chareset="utf-8">
<meta name="timeout" content="long">
<meta name="variant" content="?designMode=off&white-space=normal">
<meta name="variant" content="?designMode=off&white-space=pre">
<meta name="variant" content="?designMode=off&white-space=pre-line">
<meta name="variant" content="?designMode=off&white-space=pre-wrap">
<meta name="variant" content="?designMode=on&white-space=normal">
<meta name="variant" content="?designMode=on&white-space=pre">
<meta name="variant" content="?designMode=on&white-space=pre-line">
<meta name="variant" content="?designMode=on&white-space=pre-wrap">
<title>Insert paragraph in a block element in the head element</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/testdriver.js"></script>
<script src="/resources/testdriver-vendor.js"></script>
<script src="/resources/testdriver-actions.js"></script>
<script src="../include/editor-test-utils.js"></script>
</head>
<body>
<iframe srcdoc=""></iframe>
<script>
"use strict";

const searchParams = new URLSearchParams(document.location.search);
const whiteSpace = searchParams.get("white-space");
const testingDesignMode = searchParams.get("designMode") == "on";

const isPreformatted =
  whiteSpace == "pre" || whiteSpace == "pre-line" || whiteSpace == "pre-wrap";

const iframe = document.querySelector("iframe");
const minimumSrcDoc =
  "<html>" +
    "<head style='display:block'>" +
      "<title>iframe</title>" +
      "<script src='/resources/testdriver.js'></" + "script>" +
      "<script src='/resources/testdriver-vendor.js'></" + "script>" +
      "<script src='/resources/testdriver-actions.js'></" + "script>" +
    "</head>" +
    "<body><br></body>" +
  "</html>";

async function initializeAndWaitForLoad(iframeElement, srcDocValue) {
  const waitForLoad =
    new Promise(
      resolve => iframeElement.addEventListener("load", resolve, {once: true})
    );
  iframeElement.srcdoc = srcDocValue;
  await waitForLoad;
  if (testingDesignMode) {
    iframeElement.contentDocument.designMode = "on";
  } else {
    iframeElement.contentDocument.documentElement.setAttribute("contenteditable", "");
  }
  iframeElement.contentWindow.focus();
  iframeElement.contentDocument.execCommand("defaultParagraphSeparator", false, "div");
}

function removeResourceScriptElements(node) {
  node.querySelectorAll("script").forEach(
    element => {
      if (element.getAttribute("src")?.startsWith("/resources")) {
        element.remove()
      }
    }
  );
}

// DO NOT USE multi-line comment in this file, then, you can comment out
// unnecessary tests when you need to attach the browser with a debugger.

// <title>, <style> and <script> cannot have <br> element.  Therefore, it's
// hard to think what is the best if linefeeds are not preformatted.
promise_test(async () => {
  await initializeAndWaitForLoad(iframe, minimumSrcDoc);
  const childDoc = iframe.contentDocument;
  const title = childDoc.querySelector("title");
  title.setAttribute("style", `display:block;white-space:${whiteSpace}`);
  const utils = new EditorTestUtils(title);
  utils.setupEditingHost("{}");
  await utils.sendEnterKey();
  removeResourceScriptElements(childDoc);
  title.removeAttribute("style");
  childDoc.head.removeAttribute("style");

  if (!isPreformatted) {
    assert_in_array(
      childDoc.documentElement.innerHTML,
      [
        "<head><title></title></head><body><br></body>",      // noop
        "<head><title>\n</title></head><body><br></body>",    // (collapse white-space)
        "<head><title>\n\n</title></head><body><br></body>",  // (collapse white-spaces)
      ],
      "0-2 collapsible linefeed(s) should be inserted"
    );
  } else {
    // The second linefeed is required to make the last line visible
    assert_equals(
      childDoc.documentElement.innerHTML,
      "<head><title>\n\n</title></head><body><br></body>",
      "2 preformatted linefeeds should be inserted"
    );
  }
}, `insertParagraph in empty <title style="display:block;white-space:${whiteSpace}"> should not split it`);

promise_test(async () => {
  await initializeAndWaitForLoad(iframe, minimumSrcDoc);
  const childDoc = iframe.contentDocument;
  const title = childDoc.querySelector("title");
  title.setAttribute("style", `display:block;white-space:${whiteSpace}`);
  const utils = new EditorTestUtils(title);
  utils.setupEditingHost("ab[]cd");
  await utils.sendEnterKey();
  removeResourceScriptElements(childDoc);
  title.removeAttribute("style");
  childDoc.head.removeAttribute("style");

  if (!isPreformatted) {
    assert_in_array(
      childDoc.documentElement.innerHTML,
      [
        "<head><title>abcd</title></head><body><br></body>",    // noop
        "<head><title>ab\ncd</title></head><body><br></body>",  // (collapsible white-space)
      ],
      "0-1 collapsible linefeed should be inserted"
    );
  } else {
    assert_equals(
      childDoc.documentElement.innerHTML,
      "<head><title>ab\ncd</title></head><body><br></body>",
      "1 preformatted linefeed should be inserted"
    );
  }
}, `insertParagraph in <title style="display:block;white-space:${whiteSpace}"> containing text should not split it`);

promise_test(async () => {
  await initializeAndWaitForLoad(iframe, minimumSrcDoc);
  const childDoc = iframe.contentDocument;
  const style = childDoc.createElement("style");
  style.setAttribute("style", `display:block;white-space:${whiteSpace}`);
  childDoc.head.appendChild(style);
  const utils = new EditorTestUtils(style);
  utils.setupEditingHost("{}");
  await utils.sendEnterKey();
  removeResourceScriptElements(childDoc);
  style.removeAttribute("style");
  childDoc.head.removeAttribute("style");

  if (!isPreformatted) {
    assert_in_array(
      childDoc.documentElement.innerHTML,
      [
        "<head><title>iframe</title><style></style></head><body><br></body>",      // noop
        "<head><title>iframe</title><style>\n</style></head><body><br></body>",    // (collapsible white-space)
        "<head><title>iframe</title><style>\n\n</style></head><body><br></body>",  // (collapsible white-spaces)
      ],
      "0-2 collapsible linefeeds should be inserted"
    );
  } else {
    // The second linefeed is required to make the last line visible
    assert_equals(
      childDoc.documentElement.innerHTML,
      "<head><title>iframe</title><style>\n\n</style></head><body><br></body>",
      "2 preformatted linefeeds should be inserted"
    );
  }
}, `insertParagraph in empty <style style="display:block;white-space:${whiteSpace}"> should not split it`);

promise_test(async () => {
  await initializeAndWaitForLoad(iframe, minimumSrcDoc);
  const childDoc = iframe.contentDocument;
  const style = childDoc.createElement("style");
  style.setAttribute("style", `display:block;white-space:${whiteSpace}`);
  childDoc.head.appendChild(style);
  const utils = new EditorTestUtils(style);
  utils.setupEditingHost("ab[]cd");
  await utils.sendEnterKey();
  removeResourceScriptElements(childDoc);
  style.removeAttribute("style");
  childDoc.head.removeAttribute("style");

  if (!isPreformatted) {
    assert_in_array(
      childDoc.documentElement.innerHTML,
      [
        "<head><title>iframe</title><style>abcd</style></head><body><br></body>",    // noop
        "<head><title>iframe</title><style>ab\ncd</style></head><body><br></body>",  // (collapsible white-space)
      ],
      "0-1 collapsible linefeed should be inserted"
    );
  } else {
    assert_equals(
      childDoc.documentElement.innerHTML,
      "<head><title>iframe</title><style>ab\ncd</style></head><body><br></body>",
      "1 preformatted linefeed should be inserted"
    );
  }
}, `insertParagraph in <style style="display:block;white-space:${whiteSpace}"> containing text should not split it`);

promise_test(async () => {
  await initializeAndWaitForLoad(iframe, minimumSrcDoc);
  const childDoc = iframe.contentDocument;
  const script = childDoc.createElement("script");
  script.setAttribute("style", `display:block;white-space:${whiteSpace}`);
  childDoc.head.appendChild(script);
  // Setting <script>.innerHTML causes throwing exception because it runs
  // setting script, so we cannot use EditorTestUtils.setupEditingHost.
  childDoc.getSelection().collapse(script, 0);
  const utils = new EditorTestUtils(childDoc.documentElement);
  await utils.sendEnterKey();
  removeResourceScriptElements(childDoc);
  script.removeAttribute("style");
  childDoc.head.removeAttribute("style");

  if (!isPreformatted) {
    assert_in_array(
      childDoc.documentElement.innerHTML,
      [
        "<head><title>iframe</title><script></" + "script></head><body><br></body>",      // noop
        "<head><title>iframe</title><script>\n</" + "script></head><body><br></body>",    // (collapsible white-space)
        "<head><title>iframe</title><script>\n\n</" + "script></head><body><br></body>",  // (collapsible white-spaces)
      ],
      "0-2 collapsible linefeeds should be inserted"
    );
  } else {
    // The second linefeed is required to make the last line visible
    assert_equals(
      childDoc.documentElement.innerHTML,
      "<head><title>iframe</title><script>\n\n</" + "script></head><body><br></body>",
      "2 preformatted linefeeds should be inserted"
    );
  }
}, `insertParagraph in empty <script style="display:block;white-space:${whiteSpace}"> should not split it`);

promise_test(async () => {
  await initializeAndWaitForLoad(iframe, minimumSrcDoc);
  const childDoc = iframe.contentDocument;
  const script = childDoc.createElement("script");
  script.setAttribute("style", `display:block;white-space:${whiteSpace}`);
  childDoc.head.appendChild(script);
  // Setting <script>.innerHTML causes throwing exception because it runs
  // setting script, so we cannot use EditorTestUtils.setupEditingHost.
  script.innerText = "// ab// cd";
  childDoc.getSelection().collapse(script.firstChild, "// ab".length);
  const utils = new EditorTestUtils(childDoc.documentElement);
  await utils.sendEnterKey();
  removeResourceScriptElements(childDoc);
  script.removeAttribute("style");
  childDoc.head.removeAttribute("style");

  if (!isPreformatted) {
    assert_in_array(
      childDoc.documentElement.innerHTML,
      [
        "<head><title>iframe</title><script>// ab// cd</" + "script></head><body><br></body>",    // noop
        "<head><title>iframe</title><script>// ab\n// cd</" + "script></head><body><br></body>",  // (collapsible white-space)
      ],
      "0-1 linefeed should be inserted"
    );
  } else {
    assert_equals(
      childDoc.documentElement.innerHTML,
      "<head><title>iframe</title><script>// ab\n// cd</" + "script></head><body><br></body>",
      "1 preformatted linefeed should be inserted"
    );
  }
}, `insertParagraph in <script style="display:block;white-space:${whiteSpace}"> containing text should not split it`);

// <div> element in the <head> should be same behavior as the following result.
//  See insertparagraph-in-child-of-html.tentative.html for the detail.
promise_test(async () => {
  await initializeAndWaitForLoad(iframe, minimumSrcDoc);
  const childDoc = iframe.contentDocument;
  const div = childDoc.createElement("div");
  div.setAttribute("style", `white-space:${whiteSpace}`);
  childDoc.head.appendChild(div);
  const utils = new EditorTestUtils(div);
  utils.setupEditingHost("{}");
  await utils.sendEnterKey();
  removeResourceScriptElements(childDoc);
  childDoc.head.removeAttribute("style");

  if (!isPreformatted) {
    assert_equals(
      childDoc.documentElement.innerHTML,
      `<head><title>iframe</title><div style="white-space:${whiteSpace}"><br></div><div style="white-space:${whiteSpace}"><br></div></head><body><br></body>`,
      "The <div> should be split"
    );
  } else {
    assert_in_array(
      childDoc.documentElement.innerHTML,
      [
        `<head><title>iframe</title><div style="white-space:${whiteSpace}">\n</div><div style="white-space:${whiteSpace}">\n</div></head><body><br></body>`,
        `<head><title>iframe</title><div style="white-space:${whiteSpace}"><br></div><div style="white-space:${whiteSpace}"><br></div></head><body><br></body>`,
      ],
      "The <div> should be split"
    );
  }
}, `insertParagraph in empty <div style="white-space:${
  whiteSpace
}"> in the <head> should split the <div>`);

promise_test(async () => {
  await initializeAndWaitForLoad(iframe, minimumSrcDoc);
  const childDoc = iframe.contentDocument;
  const div = childDoc.createElement("div");
  div.setAttribute("style", `white-space:${whiteSpace}`);
  childDoc.head.appendChild(div);
  const utils = new EditorTestUtils(div);
  utils.setupEditingHost("{}<br>");
  await utils.sendEnterKey();
  removeResourceScriptElements(childDoc);
  childDoc.head.removeAttribute("style");

  if (!isPreformatted) {
    assert_equals(
      childDoc.documentElement.innerHTML,
      `<head><title>iframe</title><div style="white-space:${whiteSpace}"><br></div><div style="white-space:${whiteSpace}"><br></div></head><body><br></body>`,
      "The <div> should be split"
    );
  } else {
    assert_in_array(
      childDoc.documentElement.innerHTML,
      [
        `<head><title>iframe</title><div style="white-space:${whiteSpace}">\n</div><div style="white-space:${whiteSpace}">\n</div></head><body><br></body>`,
        `<head><title>iframe</title><div style="white-space:${whiteSpace}"><br></div><div style="white-space:${whiteSpace}">\n</div></head><body><br></body>`,
        `<head><title>iframe</title><div style="white-space:${whiteSpace}">\n</div><div style="white-space:${whiteSpace}"><br></div></head><body><br></body>`,
        `<head><title>iframe</title><div style="white-space:${whiteSpace}"><br></div><div style="white-space:${whiteSpace}"><br></div></head><body><br></body>`,
      ],
      "The <div> should be split"
    );
  }
}, `insertParagraph in <div style="white-space:${
  whiteSpace
}"> (containing only a <br>) in the <head> should split the <div> element`);

promise_test(async () => {
  await initializeAndWaitForLoad(iframe, minimumSrcDoc);
  const childDoc = iframe.contentDocument;
  const div = childDoc.createElement("div");
  div.setAttribute("style", `white-space:${whiteSpace}`);
  childDoc.head.appendChild(div);
  const utils = new EditorTestUtils(div);
  utils.setupEditingHost("ab[]cd");
  await utils.sendEnterKey();
  removeResourceScriptElements(childDoc);
  childDoc.head.removeAttribute("style");

  assert_in_array(
    childDoc.documentElement.innerHTML,
    [
      `<head><title>iframe</title><div style="white-space:${whiteSpace}">ab</div><div style="white-space:${whiteSpace}">cd</div></head><body><br></body>`,
      `<head><title>iframe</title><div style="white-space:${whiteSpace}">ab</div><div style="white-space:${whiteSpace}">cd<br></div></head><body><br></body>`,
      `<head><title>iframe</title><div style="white-space:${whiteSpace}">ab<br></div><div style="white-space:${whiteSpace}">cd</div></head><body><br></body>`,
      `<head><title>iframe</title><div style="white-space:${whiteSpace}">ab<br></div><div style="white-space:${whiteSpace}">cd<br></div></head><body><br></body>`,
    ],
    "The <div> should be split"
  );
}, `insertParagraph in <div style="white-space:${
  whiteSpace
}"> (containing text) in the <head> should split the <div> element`);
</script>
</body>
</html>
