From 37205039fc83707edc8079d0884d4c12953e80b1 Mon Sep 17 00:00:00 2001
From: silverwind <me@silverwind.io>
Date: Sun, 30 May 2021 21:15:57 +0200
Subject: Replace clipboard.js with async clipboard api (#15899)

Use async clipboard api [1] over this dependency, saving around 10kB
bundle size before minify while delivering the same functionality.

The issue comment button works but does not have a popup indication. We
could add some toast-style notifications in the future to fix that but I
think it's out of scope of this PR.

[1] https://developer.mozilla.org/en-US/docs/Web/API/Clipboard/writeText
---
 web_src/js/features/clipboard.js | 52 ++++++++++++++++++++++++++--------------
 1 file changed, 34 insertions(+), 18 deletions(-)

(limited to 'web_src/js/features/clipboard.js')

diff --git a/web_src/js/features/clipboard.js b/web_src/js/features/clipboard.js
index 32eff981b8..12486a208d 100644
--- a/web_src/js/features/clipboard.js
+++ b/web_src/js/features/clipboard.js
@@ -1,22 +1,38 @@
-export default async function initClipboard() {
-  const els = document.querySelectorAll('.clipboard');
-  if (!els || !els.length) return;
+const selector = '[data-clipboard-target], [data-clipboard-text]';
 
-  const {default: ClipboardJS} = await import(/* webpackChunkName: "clipboard" */'clipboard');
+// TODO: replace these with toast-style notifications
+function onSuccess(btn) {
+  if (!btn.dataset.content) return;
+  $(btn).popup('destroy');
+  btn.dataset.content = btn.dataset.success;
+  $(btn).popup('show');
+  btn.dataset.content = btn.dataset.original;
+}
+function onError(btn) {
+  if (!btn.dataset.content) return;
+  $(btn).popup('destroy');
+  btn.dataset.content = btn.dataset.error;
+  $(btn).popup('show');
+  btn.dataset.content = btn.dataset.original;
+}
 
-  const clipboard = new ClipboardJS(els);
-  clipboard.on('success', (e) => {
-    e.clearSelection();
-    $(e.trigger).popup('destroy');
-    e.trigger.dataset.content = e.trigger.dataset.success;
-    $(e.trigger).popup('show');
-    e.trigger.dataset.content = e.trigger.dataset.original;
-  });
+export default async function initClipboard() {
+  for (const btn of document.querySelectorAll(selector) || []) {
+    btn.addEventListener('click', async () => {
+      let text;
+      if (btn.dataset.clipboardText) {
+        text = btn.dataset.clipboardText;
+      } else if (btn.dataset.clipboardTarget) {
+        text = document.querySelector(btn.dataset.clipboardTarget)?.value;
+      }
+      if (!text) return;
 
-  clipboard.on('error', (e) => {
-    $(e.trigger).popup('destroy');
-    e.trigger.dataset.content = e.trigger.dataset.error;
-    $(e.trigger).popup('show');
-    e.trigger.dataset.content = e.trigger.dataset.original;
-  });
+      try {
+        await navigator.clipboard.writeText(text);
+        onSuccess(btn);
+      } catch {
+        onError(btn);
+      }
+    });
+  }
 }
-- 
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