forgot file

src/util/dom_trickery.ts

@@ -0,0 +1,32 @@
+
+// Move caret all the way to the right in the currently focused element
+export function setRightMostCaretPosition(elem) {
+  const range = document.createRange();
+  range.selectNode(elem);
+  if (elem.lastChild) { // if no text is entered, there is no lastChild
+    range.setStart(elem.lastChild, elem.textContent.length);
+    range.setEnd(elem.lastChild, elem.textContent.length);
+    const selection = window.getSelection();
+    selection?.removeAllRanges();
+    selection?.addRange(range);
+  }
+}
+
+export function focusNextElement() {
+  const editable = Array.from<any>(document.querySelectorAll('input.editable'));
+  const index = editable.indexOf(document.activeElement);
+  const nextElem = editable[index + 1];
+  if (nextElem) {
+    nextElem.focus();
+  }
+}
+
+export function focusPrevElement() {
+  const editable = Array.from<any>(document.querySelectorAll('input.editable'));
+  const index = editable.indexOf(document.activeElement);
+  const prevElem = editable[index - 1];
+  if (prevElem) {
+    prevElem.focus();
+    setRightMostCaretPosition(prevElem);
+  }
+}