feat: 添加括号符号

close #1

src/util/notation.js

@@ -1,4 +1,8 @@
+import { message } from "antd";
 import { toJS } from "mobx";
+import state from "../store/state";
+import { wrappedAction } from "../store/history";
+import { findParagraphAndNotation } from "./editor";
 
 const notations = {
   zero: "0",
@@ -11,8 +15,8 @@ const notations = {
   si: "7",
   extend: "─",
   separator: "│",
-  crackerOpen: "（",
-  crackerClose: ")"
+  crackerOpen: "(",
+  crackerClose: ")",
 };
 const notes = [
   notations.zero,
@@ -61,6 +65,35 @@ function cloneNotation(notation) {
   return n;
 }
 
+// 放置连音线
+const placeTie = wrappedAction((notation) => {
+  if (state.tieSourceKey) {
+    // 处理连音线
+    if (state.tieSourceKey === notation.key) {
+      state.tieSourceKey = null;
+      // NOTICE: 如果要添加其他逻辑注意这里的return
+      return;
+    }
+    const {
+      notation: sourceNotation,
+      paragraph: sourceParagraph,
+    } = findParagraphAndNotation(state.tieSourceKey);
+    if (!sourceNotation) {
+      state.tieSourceKey = null;
+      return;
+    }
+    if (!sourceParagraph.notations.includes(notation)) {
+      message.warn("只允许相同段落的音符相连！");
+    } else if (!isNote(notation)) {
+      message.warn("只允许在音符上添加连音线！");
+    } else {
+      sourceNotation.tieTo = notation.key;
+      notation.tieTo = sourceNotation.key;
+    }
+    state.tieSourceKey = null;
+  }
+});
+
 export {
   notations,
   isNote,
@@ -68,4 +101,5 @@ export {
   isSeparator,
   createNotation,
   cloneNotation,
+  placeTie,
 };