feat: wrap within list item

src/editor/core/draw/Draw.ts

@@ -1043,7 +1043,7 @@ export class Draw {
       if (element.listId) {
         if (element.listId !== listId) {
           listIndex = 0
-        } else if (element.value === ZERO) {
+        } else if (element.value === ZERO && !element.listWrap) {
           listIndex++
         }
       }

src/editor/core/draw/particle/ListParticle.ts

@@ -75,7 +75,7 @@ export class ListParticle {
   public drawListStyle(ctx: CanvasRenderingContext2D, row: IRow, position: IElementPosition) {
     const { elementList, offsetX, listIndex, ascent } = row
     const startElement = elementList[0]
-    if (startElement.value !== ZERO) return
+    if (startElement.value !== ZERO || startElement.listWrap) return
     let text = ''
     if (startElement.listType === ListType.UL) {
       if (startElement.listStyle) {

src/editor/core/event/handlers/keydown.ts

@@ -77,8 +77,13 @@ export function keydown(evt: KeyboardEvent, host: CanvasEvent) {
     const enterText: IElement = {
       value: ZERO
     }
-    // 标题结尾处回车无需格式化
+    const startElement = elementList[startIndex]
     const endElement = elementList[endIndex]
+    // 列表块内换行
+    if (evt.shiftKey && startElement.listId) {
+      enterText.listWrap = true
+    }
+    // 标题结尾处回车无需格式化
     if (!(endElement.titleId && endElement.titleId !== elementList[endIndex + 1]?.titleId)) {
       formatElementContext(elementList, [enterText], startIndex)
     }

src/editor/dataset/constant/Element.ts

@@ -55,7 +55,8 @@ export const EDITOR_ELEMENT_ZIP_ATTR: Array<keyof IElement> = [
   'block',
   'level',
   'listType',
-  'listStyle'
+  'listStyle',
+  'listWrap'
 ]
 
 export const EDITOR_ELEMENT_CONTEXT_ATTR: Array<keyof IElement> = [

src/editor/interface/Element.ts

@@ -43,6 +43,7 @@ export interface IListElement {
   listType?: ListType;
   listStyle?: ListStyle;
   listId?: string;
+  listWrap?: boolean;
 }
 
 export interface ITableAttr {

src/editor/utils/clipboard.ts

@@ -110,6 +110,11 @@ export function writeElementList(elementList: IElement[], options: DeepRequired<
         const zipList = zipElementList(element.valueList!)
         for (let z = 0; z < zipList.length; z++) {
           const zipElement = zipList[z]
+          if (zipElement.listWrap) {
+            const listElementList = listElementListMap.get(curListIndex) || []
+            listElementList.push(zipElement)
+            listElementListMap.set(curListIndex, listElementList)
+          } else {
             const zipValueList = zipElement.value.split('\n')
             for (let c = 0; c < zipValueList.length; c++) {
               if (c > 0) {
@@ -124,6 +129,7 @@ export function writeElementList(elementList: IElement[], options: DeepRequired<
               listElementListMap.set(curListIndex, listElementList)
             }
           }
+        }
         listElementListMap.forEach(listElementList => {
           const li = document.createElement('li')
           const childDom = buildDomFromElementList(listElementList)
@@ -264,6 +270,11 @@ export function getElementListByHTML(htmlText: string, options: IGetElementListB
           }
           listNode.querySelectorAll('li').forEach(li => {
             const liValueList = getElementListByHTML(li.innerHTML, options)
+            liValueList.forEach(list => {
+              if (list.value === '\n') {
+                list.listWrap = true
+              }
+            })
             liValueList.unshift({
               value: '\n'
             })