electron-background-processing/renderer.html at master · sgdan/electron-background-processing · GitHub

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<!DOCTYPE html>
<html>
  <head>
    <meta charset="UTF-8" />
    <!-- https://electronjs.org/docs/tutorial/security#csp-meta-tag -->
    <meta
      http-equiv="Content-Security-Policy"
      content="script-src 'self' 'unsafe-inline';"
    />
    <script type="text/javascript">
      function setVal(id, value) {
        document.getElementById(id).innerHTML = value;
      }

      function toMain() {
        window.api.toMain(document.getElementById("msg").value);
      }

      function toBg() {
        window.api.forBackground(document.getElementById("msg").value);
      }

      function assignTask() {
        window.api.assignTask(document.getElementById("task").value);
      }

      window.api.toRenderer((data) => {
        setVal("received", data);
      });

      window.api.status((threads, tasks) => {
        setVal("threads", threads);
        setVal("tasks", tasks);
      });
    </script>
  </head>
  <body>
    <h2>Background Threads</h2>

    Msg: <input id="msg" type="textfield" value="a message" /><br />
    <button onclick="toMain()">Send to main thread</button><br />
    <button onclick="toBg()">Send to bg thread</button>
    <label id="received"></label>
    <br /><br />

    Task: <input id="task" type="textfield" value="a task" /><br />
    <button onclick="assignTask()">Do background work</button>
    <br /><br />

    <label id="threads">0</label> background threads available<br />
    <label id="tasks">0</label> tasks queued
  </body>
</html>