Split common-global.js into separate files (#31438)

To improve maintainability

web_src/js/features/dropzone.js

@@ -1,3 +1,13 @@
+import $ from 'jquery';
+import {svg} from '../svg.js';
+import {htmlEscape} from 'escape-goat';
+import {clippie} from 'clippie';
+import {showTemporaryTooltip} from '../modules/tippy.js';
+import {POST} from '../modules/fetch.js';
+import {showErrorToast} from '../modules/toast.js';
+
+const {csrfToken, i18n} = window.config;
+
 export async function createDropzone(el, opts) {
   const [{Dropzone}] = await Promise.all([
     import(/* webpackChunkName: "dropzone" */'dropzone'),
@@ -5,3 +15,66 @@ export async function createDropzone(el, opts) {
   ]);
   return new Dropzone(el, opts);
 }
+
+export function initGlobalDropzone() {
+  for (const el of document.querySelectorAll('.dropzone')) {
+    initDropzone(el);
+  }
+}
+
+export function initDropzone(el) {
+  const $dropzone = $(el);
+  const _promise = createDropzone(el, {
+    url: $dropzone.data('upload-url'),
+    headers: {'X-Csrf-Token': csrfToken},
+    maxFiles: $dropzone.data('max-file'),
+    maxFilesize: $dropzone.data('max-size'),
+    acceptedFiles: (['*/*', ''].includes($dropzone.data('accepts'))) ? null : $dropzone.data('accepts'),
+    addRemoveLinks: true,
+    dictDefaultMessage: $dropzone.data('default-message'),
+    dictInvalidFileType: $dropzone.data('invalid-input-type'),
+    dictFileTooBig: $dropzone.data('file-too-big'),
+    dictRemoveFile: $dropzone.data('remove-file'),
+    timeout: 0,
+    thumbnailMethod: 'contain',
+    thumbnailWidth: 480,
+    thumbnailHeight: 480,
+    init() {
+      this.on('success', (file, data) => {
+        file.uuid = data.uuid;
+        const $input = $(`<input id="${data.uuid}" name="files" type="hidden">`).val(data.uuid);
+        $dropzone.find('.files').append($input);
+        // Create a "Copy Link" element, to conveniently copy the image
+        // or file link as Markdown to the clipboard
+        const copyLinkElement = document.createElement('div');
+        copyLinkElement.className = 'tw-text-center';
+        // The a element has a hardcoded cursor: pointer because the default is overridden by .dropzone
+        copyLinkElement.innerHTML = `<a href="#" style="cursor: pointer;">${svg('octicon-copy', 14, 'copy link')} Copy link</a>`;
+        copyLinkElement.addEventListener('click', async (e) => {
+          e.preventDefault();
+          let fileMarkdown = `[${file.name}](/attachments/${file.uuid})`;
+          if (file.type.startsWith('image/')) {
+            fileMarkdown = `!${fileMarkdown}`;
+          } else if (file.type.startsWith('video/')) {
+            fileMarkdown = `<video src="/attachments/${file.uuid}" title="${htmlEscape(file.name)}" controls></video>`;
+          }
+          const success = await clippie(fileMarkdown);
+          showTemporaryTooltip(e.target, success ? i18n.copy_success : i18n.copy_error);
+        });
+        file.previewTemplate.append(copyLinkElement);
+      });
+      this.on('removedfile', (file) => {
+        $(`#${file.uuid}`).remove();
+        if ($dropzone.data('remove-url')) {
+          POST($dropzone.data('remove-url'), {
+            data: new URLSearchParams({file: file.uuid}),
+          });
+        }
+      });
+      this.on('error', function (file, message) {
+        showErrorToast(message);
+        this.removeFile(file);
+      });
+    },
+  });
+}