feat: editor enhancement for order list (#763)

web/src/components/Editor/Editor.tsx

 import { forwardRef, ReactNode, useCallback, useEffect, useImperativeHandle, useRef } from "react";
-import useRefresh from "../../hooks/useRefresh";
 import "../../less/editor.less";
 
 export interface EditorRefActions {
@@ -10,6 +9,7 @@ export interface EditorRefActions {
   getContent: () => string;
   getSelectedContent: () => string;
   getCursorPosition: () => number;
+  setCursorPosition: (pos: number) => void;
 }
 
 interface Props {
@@ -25,7 +25,6 @@ interface Props {
 const Editor = forwardRef(function Editor(props: Props, ref: React.ForwardedRef<EditorRefActions>) {
   const { className, initialContent, placeholder, fullscreen, onPaste, onContentChange: handleContentChangeCallback } = props;
   const editorRef = useRef<HTMLTextAreaElement>(null);
-  const refresh = useRefresh();
 
   useEffect(() => {
     if (editorRef.current && initialContent) {
@@ -36,10 +35,16 @@ const Editor = forwardRef(function Editor(props: Props, ref: React.ForwardedRef<
 
   useEffect(() => {
     if (editorRef.current && !fullscreen) {
+      updateEditorHeight();
+    }
+  }, [editorRef.current?.value, fullscreen]);
+
+  const updateEditorHeight = () => {
+    if (editorRef.current) {
       editorRef.current.style.height = "auto";
       editorRef.current.style.height = (editorRef.current.scrollHeight ?? 0) + "px";
     }
-  }, [editorRef.current?.value, fullscreen]);
+  };
 
   useImperativeHandle(
     ref,
@@ -66,7 +71,7 @@ const Editor = forwardRef(function Editor(props: Props, ref: React.ForwardedRef<
         editorRef.current.focus();
         editorRef.current.selectionEnd = endPosition + prefix.length + content.length;
         handleContentChangeCallback(editorRef.current.value);
-        refresh();
+        updateEditorHeight();
       },
       removeText: (start: number, length: number) => {
         if (!editorRef.current) {
@@ -79,14 +84,14 @@ const Editor = forwardRef(function Editor(props: Props, ref: React.ForwardedRef<
         editorRef.current.focus();
         editorRef.current.selectionEnd = start;
         handleContentChangeCallback(editorRef.current.value);
-        refresh();
+        updateEditorHeight();
       },
       setContent: (text: string) => {
         if (editorRef.current) {
           editorRef.current.value = text;
           editorRef.current.focus();
           handleContentChangeCallback(editorRef.current.value);
-          refresh();
+          updateEditorHeight();
         }
       },
       getContent: (): string => {
@@ -100,13 +105,16 @@ const Editor = forwardRef(function Editor(props: Props, ref: React.ForwardedRef<
         const end = editorRef.current?.selectionEnd;
         return editorRef.current?.value.slice(start, end) ?? "";
       },
+      setCursorPosition: (pos: number) => {
+        editorRef.current?.setSelectionRange(pos, pos);
+      },
     }),
     []
   );
 
   const handleEditorInput = useCallback(() => {
     handleContentChangeCallback(editorRef.current?.value ?? "");
-    refresh();
+    updateEditorHeight();
   }, []);
 
   return (

web/src/components/MemoEditor.tsx

@@ -15,6 +15,7 @@ import showResourcesSelectorDialog from "./ResourcesSelectorDialog";
 import "../less/memo-editor.less";
 
 const listItemSymbolList = ["- [ ] ", "- [x] ", "- [X] ", "* ", "- "];
+const emptyOlReg = /^([1-9][0-9]*)\. $/;
 
 const getEditorContentCache = (): string => {
   return storage.get(["editorContentCache"]).editorContentCache ?? "";
@@ -124,17 +125,52 @@ const MemoEditor = () => {
       const contentBeforeCursor = editorRef.current.getContent().slice(0, cursorPosition);
       const rowValue = last(contentBeforeCursor.split("\n"));
       if (rowValue) {
-        if (listItemSymbolList.includes(rowValue)) {
+        if (listItemSymbolList.includes(rowValue) || emptyOlReg.test(rowValue)) {
           event.preventDefault();
           editorRef.current.removeText(cursorPosition - rowValue.length, rowValue.length);
         } else {
+          // unordered list / checked list
+          let matched = false;
           for (const listItemSymbol of listItemSymbolList) {
             if (rowValue.startsWith(listItemSymbol)) {
               event.preventDefault();
               editorRef.current.insertText("", `\n${listItemSymbol}`);
+              matched = true;
               break;
             }
           }
+          if (!matched) {
+            // ordered list
+            const olReg = /^([1-9][0-9]*)\. /;
+            const olRes = olReg.exec(rowValue);
+            if (olRes) {
+              let order = parseInt(olRes[1]) + 1;
+              event.preventDefault();
+              const contentAfterCursor = editorRef.current.getContent().slice(cursorPosition);
+              editorRef.current.insertText("", `\n${order}. `);
+              if (contentAfterCursor) {
+                // correct the order
+                order++;
+                const nextRows = contentAfterCursor.split("\n").slice(1);
+                const rowStart = contentBeforeCursor.split("\n").length + 1;
+                const content = editorRef.current.getContent().split("\n");
+                let updated = false;
+                for (let i = 0; i < nextRows.length; i++) {
+                  const rowRes = olReg.exec(nextRows[i]);
+                  if (rowRes) {
+                    content[rowStart + i] = nextRows[i].replace(rowRes[1], (order + i).toString());
+                    updated = true;
+                  } else {
+                    break;
+                  }
+                }
+                if (updated) {
+                  editorRef.current.setContent(content.join("\n"));
+                  editorRef.current.setCursorPosition(cursorPosition + 4);
+                }
+              }
+            }
+          }
         }
       }
       return;

web/src/hooks/useRefresh.ts

-import { useCallback, useState } from "react";
-
-const useRefresh = () => {
-  const [, setBoolean] = useState<boolean>(false);
-
-  const refresh = useCallback(() => {
-    setBoolean((ps) => {
-      return !ps;
-    });
-  }, []);
-
-  return refresh;
-};
-
-export default useRefresh;