//
//     Copyright © 2011-2025 Cambridge Intelligence Limited.
//     All rights reserved.
//
//     Sample Code
//
//!    Understand the main concepts behind KeyLines annotations.
import KeyLines from "keylines";
import { data, itemsMap } from "./annotationsbasics-data.js";

let chart;

/* Formats the code snippets neatly in the display box on the right-hand side
   if no annotation is provided, prompt the user to select an annotation */
function prettyPrint(item) {
  const codeDisplayEl = document.getElementById("display");
  if (item?.type === "annotation") {
    const json = JSON.stringify(item, undefined, 1);
    codeDisplayEl.textContent = json;
  } else {
    codeDisplayEl.textContent = "Click an annotation";
  }
}

function initialiseInteractions() {
  chart.on("click", ({ id, preventDefault }) => {
    const item = itemsMap[id];
    if (item) {
      // Prevent item selection
      preventDefault();
    }
    prettyPrint(item);
  });
}

async function startKeyLines() {
  const options = {
    handMode: true,
    backColour: "rgb(230, 234, 224)",
    minZoom: 0.42,
    navigation: false,
  };

  chart = await KeyLines.create({ container: "klchart", options });
  await chart.load(data);
  await chart.zoom("fit");

  initialiseInteractions();
}

window.addEventListener("DOMContentLoaded", startKeyLines);

<!DOCTYPE html>
<html lang="en" style="background-color: #2d383f;">
  <head>
    <meta charset="UTF-8">
    <title>Annotations Basics</title>
    <link rel="stylesheet" type="text/css" href="/css/keylines.css">
    <link rel="stylesheet" type="text/css" href="/css/minimalsdk.css">
    <link rel="stylesheet" type="text/css" href="/css/sdk-layout.css">
    <link rel="stylesheet" type="text/css" href="/css/demo.css">
    <script src="/vendor/jquery.js" defer type="text/javascript"></script>
    <script id="keylines" src="/public/keylines.umd.cjs" defer type="text/javascript"></script>
    <script src="/vendor/webfontloader.js" defer type="text/javascript"></script>
    <script src="/annotationsbasics.js" crossorigin="use-credentials" defer type="module"></script>
  </head>
  <body>
    <div class="chart-wrapper demo-cols">
      <div class="tab-content-panel flex1" id="lhs" data-tab-group="rhs">
        <div class="toggle-content is-visible" id="lhsVisual" style="width:100%; height: 100%;">
          <div class="klchart" id="klchart">
          </div>
        </div>
      </div>
      <div class="rhs citext closed" id="demorhscontent">
        <div class="title-bar">
          <svg viewBox="0 0 360 60" style="max-width: 360px; max-height: 60px; font-size: 24px; font-family: Raleway; flex: 1;">
            <text x="0" y="38" style="width: 100%;">Annotations Basics</text>
          </svg>
        </div>
        <div class="tab-content-panel" data-tab-group="rhs">
          <div class="toggle-content is-visible tabcontent" id="controlsTab">
            <form autocomplete="off" onsubmit="return false" id="rhsForm">
              <div class="cicontent">
                <p>Click any annotation to view its source code.</p>
                <p>
                  Pan and zoom the chart and drag the nodes to see how annotations respond to changes.
                  
                </p>
                <pre id="display" style="-webkit-user-select: text; -khtml-user-select: text; -moz-user-select: text; -ms-user-select: text; word-break: keep-all;">Click an annotation</pre>
              </div>
            </form>
          </div>
        </div>
      </div>
    </div>
    <div id="moreParent">
      <div id="moreContainer">
      </div>
    </div>
    <div id="lazyScripts">
    </div>
  </body>
</html>
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