feat(wip): 複製到剪貼薄

client/index.html

@@ -23,6 +23,7 @@
         <span slot="headline">错误</span>
         <span slot="description" id="ErrorDialog_Message"></span>
     </mdui-dialog>
+    <input style="display: none;" id="copy_to_clipboard_fallback"></input>
 
     <script nomodule>
         alert('很抱歉, 此应用无法在较旧的浏览器运行, 请使用基于 Chromium 89+ 的浏览器(内核)使用 :(')

client/ui/copyToClipboard.ts

@@ -0,0 +1,14 @@
+import { $ } from 'mdui/jq'
+
+export default function copyToClipboard(text: string) {
+    if (navigator.clipboard) {
+        navigator.clipboard.writeText(text)
+    } else {
+        const input = $('#copy_to_clipboard_fallback').get(0) as HTMLInputElement
+        input.value = text
+        input.select()
+        input.setSelectionRange(0, 1145141919810)
+        document.execCommand('copy')
+        input.clearSelection()
+    }
+}