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<!DOCTYPE HTML>
<html class="reftest-wait">
<head>
    <meta charset="utf-8">
    <title>Testcase for bug 1010538 - Anchor Link Scrolling</title>
    <style type="text/css">

        html,body {
            color: black;
            background-color: white;
            font-size: 16px;
            padding: 0;
            margin: 0;
        }

        .a_box {
            position: relative;
            left: 0px;
            top: 0px;
            width: 20px;
            height: 20px;
            background: blue;
        }

        .another_box {
            position: relative;
            left: 2000px;
            top: 2000px;
            width: 20px;
            height: 20px;
            background: green;
            display: inline-block;
        }

        .scroll_box {
            width: 50px;
            height: 50px;
            overflow: scroll;
            will-change: scroll-position;
        }

        #scroll_1 {
            scroll-behavior: auto;
        }

        #scroll_3 {
            scroll-behavior: smooth;
        }

    </style>
</head>
<body>
  <div id="scroll_1" class="scroll_box">
    <div id="box1a" class="a_box"></div>
    <a name="test_anchor_1" id="box1b" class="another_box"></a>
  </div>
  <div id="scroll_2" class="scroll_box">
    <div id="box2a" class="a_box"></div>
    <a name="test_anchor_2" id="box2b" class="another_box"></a>
  </div>
  <div id="scroll_3" class="scroll_box">
    <div id="box3a" class="a_box"></div>
    <a name="test_anchor_3" id="box3b" class="another_box"></a>
  </div>
<script>
  function doTest() {
    if (document.location.search != '?ref') {
      // Scroll_1 to Scroll_2 are expected to scroll instantly
      window.location.hash = "test_anchor_1";
      window.location.hash = "test_anchor_2";

      // Scroll_3 is expected to scroll smoothly
      document.getElementById("box3b").scrollIntoView({block: "end", behavior: "smooth"});

      // Interrupt any smooth scrolling
      for (var i=1; i <= 3; i++) {
        document.getElementById("scroll_" + i).scrollLeft
          = document.getElementById("scroll_" + i).scrollLeft;
        document.getElementById("scroll_" + i).scrollTop
          = document.getElementById("scroll_" + i).scrollTop;
      }
    } else {
      // Scroll all boxes except for Scroll_3
      for (var i=1; i <= 2; i++) {
        document.getElementById("box" + i + "b").scrollIntoView({block: "end", behavior: "instant"});
      }
    }
    document.documentElement.removeAttribute("class");
  }

  for (var i=1; i <= 3; i++) {
    document.getElementById("box" + i + "a")
      .scrollIntoView({block: "start", behavior: "instant"});
  }

  window.addEventListener("MozReftestInvalidate", doTest, false);
</script>
</body>
</html>