<!-- Copyright 2020 the V8 project authors. All rights reserved.
Use of this source code is governed by a BSD-style license that can be
found in the LICENSE file. -->
<head>
  <link href="./index.css" rel="stylesheet">
</head>
<style>

#transitionView {
  overflow-x: scroll;
  white-space: nowrap;
  min-height: 50px;
  max-height: 200px;
  padding: 50px 0 0 0;
  margin-top: -25px;
  width: 100%;
}
.map {
  width: 20px;
  height: 20px;
  display: inline-block;
  border-radius: 50%;
  background-color: var(--map-background-color);
  border: 4px solid var(--surface-color);
  font-size: 10px;
  text-align: center;
  line-height: 18px;
  color: var(--on-surface-color);
  vertical-align: top;
  margin-top: -13px;
  /* raise z-index */
  position: relative;
  z-index: 2;
  cursor: pointer;
}

.map.selected {
    border-color: var(--map-background-color);
}

.transitions {
    display: inline-block;
    margin-left: -15px;
}

.transition {
  min-height: 55px;
  margin: 0 0 -2px 2px;
}

/* gray out deprecated transitions */
.deprecated > .transitionEdge,
.deprecated > .map {
  opacity: 0.5;
}

.deprecated > .transition {
  border-color: rgba(0, 0, 0, 0.5);
}

/* Show a border for all but the first transition */
.transition:nth-of-type(2),
.transition:nth-last-of-type(n+2) {
  border-left: 2px solid;
  margin-left: 0px;
}

/* special case for 2 transitions */
.transition:nth-last-of-type(1) {
  border-left: none;
}

/* topmost transitions are not related */
#transitionView > .transition {
  border-left: none;
}

/* topmost transition edge needs initial offset to be aligned */
#transitionView > .transition  > .transitionEdge {
  margin-left: 13px;
}

.transitionEdge {
  height: 2px;
  width: 80px;
  display: inline-block;
  margin: 0 0 2px 0;
  background-color: var(--map-background-color);
  vertical-align: top;
  padding-left: 15px;
}

.transitionLabel {
  color: var(--on-surface-color);
  transform: rotate(-15deg);
  transform-origin: top left;
  margin-top: -10px;
  font-size: 10px;
  white-space: normal;
  word-break: break-all;
  background-color: var(--surface-color);
}

.showSubtransitions {
  width: 0;
  height: 0;
  border-left: 6px solid transparent;
  border-right: 6px solid transparent;
  border-top: 10px solid var(--map-background-color);
  cursor: zoom-in;
  margin: 4px 0 0 4px;
}

.showSubtransitions.opened {
  border-top: none;
  border-bottom: 10px solid var(--map-background-color);
  cursor: zoom-out;
}

#tooltip {
  position: absolute;
  width: 10px;
  height: 10px;
  background-color: var(--red);
  pointer-events: none;
  z-index: 100;
  display: none;
}

#title {
  padding-bottom: 20px;
}
</style>
<div id="container">
  <div class="panel">
  <div id="title"><h4>Transitions</h4></div>
  <section id="transitionView"></section>
  <div id="tooltip">
    <div id="tooltipContents"></div>
  </div>
  </div>
</div>