First version of form-stamp

LICENSE

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+Copyright (c) 2024 Ferdinand Kuhl <f.kuhl@digital-competence.de>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

form-stamp.js

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+/* jshint esversion: 6 */
+const defaults = {
+    nameToReplace: 'idx',
+    removeSelector: '.remove'
+}
+
+export function formStamp(element, options = {})
+{
+    const {
+        nameToReplace,
+        removeSelector
+    } = { ...defaults, ...element.dataset, ...options };
+    const container = element.parentElement;
+    const template = element.querySelector('template');
+    const itemSelector = '.' + template.content.firstElementChild.className.replace(/ /g, '.');
+    const initialItemCount = container.querySelectorAll(itemSelector).length;
+    let created = 0;
+    const removeRow = (element) => () => {
+        const rowToDelete = element.closest(itemSelector);
+        // Flow renders identity fields directly at the form tag, so we need to look
+        if (rowToDelete.dataset.stampRemoveWithMe) {
+            container.closest('form')
+                .querySelectorAll(rowToDelete.dataset.stampRemoveWithMe)
+                .forEach(child => child.remove())
+        }
+        rowToDelete.remove();
+    }
+
+    element.addEventListener('click', () => {
+        const clone = template.content.cloneNode(true);
+        clone.querySelectorAll('input, select, textarea').forEach(child => {
+            child.name = child.name.replace(nameToReplace, initialItemCount + created);
+        });
+        clone.querySelectorAll(removeSelector).forEach(child => {
+            child.onclick = removeRow(child);
+        });
+        element.before(clone);
+        created++;
+    });
+    container.querySelectorAll(removeSelector).forEach(child => {
+        child.onclick = removeRow(child);
+    });
+}
+export default formStamp;

package.json

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+{
+  "name": "@digicomp/form-stamp",
+  "version": "0.0.1",
+  "description": "duplicates an entry form field group",
+  "main": "form-stamp.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git@digital-competence.de:npm/form-stamp.git"
+  },
+  "keywords": [
+    "form"
+  ],
+  "author": "Ferdinand Kuhl",
+  "license": "MIT",
+  "dependencies": {
+  },
+  "engines": {
+
+  }
+}