Warn when a screenshot fails to be taken

This usually happens when the window gets unfocused before the screenshot is done. The promise is now handled properly. Unhandled promise errors will now cause a popup. The popup can only appear once now.
4 年之前 · a8449109c7
--- a/macrovision.html
+++ b/macrovision.html
@@ -39,7 +39,16 @@
 <body class="toggle-bottom-name toggle-top-name">
  <script type="text/javascript">
    window.onerror = function(msg, url, line, col, error) {
      alert("An error occured. If you're on a computer, hit F12 to open the developer tools, click the Console tab, and send the red text to chemicalcrux. If you're on mobile, screenshot this instead:\n\n" + msg + "\n" + url + "\n" + "line: " + line + "\n" + "col: " + col + "\nerror: " + error);
      if (firsterror) {
        firsterror = false;
        alert("An error occured. If you're on a computer, hit F12 to open the developer tools, click the Console tab, and send the red text to chemicalcrux. If you're on mobile, screenshot this instead:\n\n" + msg + "\n" + url + "\n" + "line: " + line + "\n" + "col: " + col + "\nerror: " + error);
      }
    }
    window.onunhandledrejection = function(e) {
      if (firsterror) {
        firsterror = false;
        alert("An error occured. If you're on a computer, hit F12 to open the developer tools, click the Console tab, and send the red text to chemicalcrux. If you're on mobile, screenshot this instead:\n\n" + e.reason);
      }
    }
  </script>
  <input hidden id="file-upload-picker" type='file' multiple>
--- a/macrovision.js
+++ b/macrovision.js
@@ -5,6 +5,8 @@ let prevSelectedEntity = null;

 let entityIndex = 0;

 let firsterror = true;

 let clicked = null;
 let movingInBounds = false;
 let dragging = false;
@@ -3179,7 +3181,6 @@ document.addEventListener("DOMContentLoaded", () => {

    document.querySelector("#copy-screenshot").addEventListener("click", e => {
        copyScreenshot();
        toast("Copied to clipboard!");
    });

    document.querySelector("#save-screenshot").addEventListener("click", e => {
@@ -5095,7 +5096,11 @@ function copyScreenshot() {
            new ClipboardItem({
                "image/png": blob
            })
        ]);
        ]).then(e => 
            toast("Copied to clipboard!"))
            .catch(e => {
            toast("Couldn't write to the clipboard. Make sure the screenshot completes before switching tabs.")
        })
    });   
    drawScales(false);
 }