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<?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 title="Test for bug 715867"
  xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">

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

<body  xmlns="http://www.w3.org/1999/xhtml">
<p id="display"></p>
<div id="content" style="display: none">

</div>
<pre id="test">
</pre>
</body>

<script class="testbody">
<![CDATA[

const XUL_NS = "http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul";

let gWindow = null;

const kIsLinux = navigator.platform.includes("Lin");
const kIsMacOS = navigator.platform.includes("Mac");
// On Linux and macOS sizemode changes might be async.
const kAsyncChanges = kIsLinux || kIsMacOS;

let gSizeModeDidChange = false;
let gSizeModeDidChangeTo = 0;

function sizemodeChanged() {
  gSizeModeDidChange = true;
  gSizeModeDidChangeTo = gWindow.windowState;
}

async function expectSizeModeChange(newMode, duringActionCallback) {
  gSizeModeDidChange = false;

  let promise = null;
  if (kAsyncChanges) {
    if (newMode) {
      promise = new Promise(resolve => {
        gWindow.addEventListener("sizemodechange", function() {
          SimpleTest.executeSoon(resolve);
        }, { once: true })
      });
    } else {
      promise = new Promise(SimpleTest.executeSoon);
    }
  }

  duringActionCallback();

  if (promise) {
    await promise;
  }

  if (newMode == 0) {
    // No change should have taken place, no event should have fired.
    ok(!gSizeModeDidChange, "No sizemodechange event should have fired.");
  } else {
    // Size mode change event was expected to fire.
    ok(gSizeModeDidChange, "A sizemodechanged event should have fired.");
    is(gSizeModeDidChangeTo, newMode, "The new sizemode should have the expected value.");
    const expectedHidden = newMode == gWindow.STATE_MINIMIZED || gWindow.isFullyOccluded;
    if (gWindow.document.hidden != expectedHidden) {
      await new Promise(resolve => {
        gWindow.addEventListener("visibilitychange", resolve, { once: true });
      });
    }
    is(gWindow.document.hidden, expectedHidden, "Should be inactive if minimized or occluded.");
  }
}

function startTest() {
  openWindow();
}

function openWindow() {
  gWindow = window.browsingContext.topChromeWindow
                  .open('empty_window.xhtml', '_blank', 'chrome,screenX=50,screenY=50,width=200,height=200,resizable');
  SimpleTest.waitForFocus(runTest, gWindow);
}

async function runTest() {
  // Install event handler.
  gWindow.addEventListener("sizemodechange", sizemodeChanged);

  // Run tests.
  info("Testing minimize()");
  await expectSizeModeChange(gWindow.STATE_MINIMIZED, function () {
    gWindow.minimize();
  });

  info("Testing restore() after minimize()");
  await expectSizeModeChange(gWindow.STATE_NORMAL, function () {
    gWindow.restore();
  });

  info("Testing maximize()");
  await expectSizeModeChange(gWindow.STATE_MAXIMIZED, function () {
    gWindow.maximize();
  });

  info("Testing restore() after maximize()");
  await expectSizeModeChange(gWindow.STATE_NORMAL, function () {
    gWindow.restore();
  });

  // Normal window resizing shouldn't fire a sizemodechanged event, bug 715867.
  info("Testing resizeTo() horizontal");
  await expectSizeModeChange(0, function () {
    gWindow.resizeTo(gWindow.outerWidth + 10, gWindow.outerHeight);
  });

  info("Testing resizeTo() vertical");
  await expectSizeModeChange(0, function () {
    gWindow.resizeTo(gWindow.outerWidth, gWindow.outerHeight + 10);
  });

  // Resizing a maximized window should change to normal sizemode.
  info("maximize() in preparation for resize");
  await expectSizeModeChange(gWindow.STATE_MAXIMIZED, function () {
    gWindow.maximize();
  });

  info("Testing resizeTo() from maximized");
  await expectSizeModeChange(gWindow.STATE_NORMAL, function () {
    // MacOS treats windows close to the available screen size as maximized.
    // Shrinking the window by only 10px isn't enough to change the sizemode.
    gWindow.resizeTo(gWindow.outerWidth / 2, gWindow.outerHeight / 2);
  });

  gWindow.removeEventListener("sizemodechange", sizemodeChanged);
  gWindow.close();
  SimpleTest.finish();
}

SimpleTest.waitForExplicitFinish();
SimpleTest.waitForFocus(startTest);

]]>
</script>

</window>