✨ Import text-editor code into the repository

frontend/text-editor/editor/clipboard/paste.js

@@ -0,0 +1,45 @@
+/**
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * Copyright (c) KALEIDOS INC
+ */
+
+import { mapContentFragmentFromHTML, mapContentFragmentFromString } from '~/editor/content/dom/Content';
+
+/**
+ * When the user pastes some HTML, what we do is generate
+ * a new DOM based on what the user pasted and then we
+ * insert it in the appropiate part (see `insertFromPaste` command).
+ *
+ * @param {ClipboardEvent} event
+ * @param {TextEditor} editor
+ * @param {SelectionController} selectionController
+ * @returns {void}
+ */
+export function paste(event, editor, selectionController) {
+  // We need to prevent default behavior
+  // because we don't allow any HTML to
+  // be pasted.
+  event.preventDefault();
+
+  let fragment = null;
+  if (event.clipboardData.types.includes("text/html")) {
+    const html = event.clipboardData.getData("text/html");
+    fragment = mapContentFragmentFromHTML(html, selectionController.currentStyle);
+  } else if (event.clipboardData.types.includes("text/plain")) {
+    const plain = event.clipboardData.getData("text/plain");
+    fragment = mapContentFragmentFromString(plain, selectionController.currentStyle);
+  }
+
+  if (!fragment) {
+    return;
+  }
+
+  if (selectionController.isCollapsed) {
+    selectionController.insertPaste(fragment);
+  } else {
+    selectionController.replaceWithPaste(fragment);
+  }
+}