Edit option (#1447)

* add func to parse html to editor input

* add  plain to html input function

* re-construct markdown

* fix missing return

* fix falsy condition

* fix reading href instead of src of emoji

* add message editor - WIP

* fix plain to editor input func

* add save edit message functionality

* show edited event source code

* focus message input on after editing message

* use del tag for strike-through instead of s

* prevent autocomplete from re-opening after esc

* scroll out of view msg editor in view

* handle up arrow edit

* handle scroll to message editor without effect

* revert prev commit: effect run after editor render

* ignore relation event from editable

* allow data-md tag for del and em in sanitize html

* prevent edit without changes

* ignore previous reply when replying to msg

* fix up arrow edit not working sometime

src/app/components/editor/common.ts

@@ -221,3 +221,12 @@ export const getPrevWorldRange = (editor: Editor): BaseRange | undefined => {
   });
   return worldStartPoint && Editor.range(editor, worldStartPoint, cursorPoint);
 };
+
+export const isEmptyEditor = (editor: Editor): boolean => {
+  const firstChildren = editor.children[0];
+  if (firstChildren && Element.isElement(firstChildren)) {
+    const isEmpty = editor.children.length === 1 && Editor.isEmpty(editor, firstChildren);
+    return isEmpty;
+  }
+  return false;
+};