//
//     Copyright © 2011-2025 Cambridge Intelligence Limited.
//     All rights reserved.
//
//     Sample Code
//
//!    Customise dragging and panning behaviour.
import KeyLines from "keylines";
import { data } from "./customdrag-data.js";

let chart;

function dragStartHandler({ button, modifierKeys, setDragOptions }) {
  // Retrieve the selected option
  const selectedDragOption = document.querySelector(
    'input[name="customDrag"]:checked'
  ).value;

  if (
    (selectedDragOption === "dragRightPan" && button === 2) ||
    (selectedDragOption === "dragCtrlPan" && modifierKeys.ctrl) ||
    selectedDragOption === "alwaysPan"
  ) {
    // Set the dragging options by returning a function here
    // with the desired dragging behaviour
    setDragOptions({ type: "pan" });
  }
}

async function startKeyLines() {
  const options = {
    logo: {
      u: "/images/Logo.png",
    },
    selectionColour: "#ff0000",
  };

  chart = await KeyLines.create({ container: "klchart", options });
  chart.load(data);
  chart.layout("organic");
  // Attach a handler to the drag-start event
  chart.on("drag-start", dragStartHandler);
}

window.addEventListener("DOMContentLoaded", startKeyLines);

<!DOCTYPE html>
<html lang="en" style="background-color: #2d383f;">
  <head>
    <meta charset="UTF-8">
    <title>Custom Dragging</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="/customdrag.js" crossorigin="use-credentials" 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%;">Custom Dragging</text>
          </svg>
        </div>
        <div class="tab-content-panel" data-tab-group="rhs">
          <div class="toggle-content is-visible tabcontent" id="controlsTab">
            <p>Select the dragging and panning behaviour.</p>
            <form autocomplete="off" onsubmit="return false" id="rhsForm">
              <div class="cicontent">
                <fieldset>
                  <label class="radio">
                    <input type="radio" name="customDrag" value="default" checked="checked"> Default (left-click drag)
                  </label>
                  <label class="radio">
                    <input type="radio" name="customDrag" value="dragRightPan"> Left-click drag, right-click pan
                  </label>
                  <label class="radio">
                    <input type="radio" name="customDrag" value="dragCtrlPan"> Left-click drag, left-click + <strong>CTRL</strong> key pan
                  </label>
                  <label class="radio">
                    <input type="radio" name="customDrag" value="alwaysPan"> Left-click pan, right-click pan, no drag
                  </label>
                </fieldset>
              </div>
            </form>
          </div>
        </div>
      </div>
    </div>
    <div id="moreParent">
      <div id="moreContainer">
      </div>
    </div>
    <div id="lazyScripts">
    </div>
  </body>
</html>
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