Feat：新增节点连线样式是否允许继承祖先的样式的实例化选项

simple-mind-map/src/constants/defaultOptions.js

@@ -321,6 +321,8 @@ export const defaultOpt = {
     }
   */
   addCustomContentToNode: null,
+  // 节点连线样式是否允许继承祖先的连线样式
+  enableInheritAncestorLineStyle: false,
 
   // 【Select插件】
   // 多选节点时鼠标移动到边缘时的画布移动偏移量

simple-mind-map/src/core/render/node/MindMapNode.js

@@ -296,7 +296,10 @@ class MindMapNode {
       typeof addCustomContentToNode.create === 'function'
     ) {
       this._customContentAddToNodeAdd = addCustomContentToNode.create(this)
-      if (this._customContentAddToNodeAdd && this._customContentAddToNodeAdd.el) {
+      if (
+        this._customContentAddToNodeAdd &&
+        this._customContentAddToNodeAdd.el
+      ) {
         addXmlns(this._customContentAddToNodeAdd.el)
       }
     }
@@ -883,15 +886,18 @@ class MindMapNode {
 
   //  设置连线样式
   styleLine(line, childNode, enableMarker) {
+    const { enableInheritAncestorLineStyle } = this.mindMap.opt
+    const getName = enableInheritAncestorLineStyle
+      ? 'getSelfInhertStyle'
+      : 'getSelfStyle'
     const width =
-      childNode.getSelfInhertStyle('lineWidth') ||
+      childNode[getName]('lineWidth') || childNode.getStyle('lineWidth', true)
-      childNode.getStyle('lineWidth', true)
     const color =
-      childNode.getSelfInhertStyle('lineColor') ||
+      childNode[getName]('lineColor') ||
       this.getRainbowLineColor(childNode) ||
       childNode.getStyle('lineColor', true)
     const dasharray =
-      childNode.getSelfInhertStyle('lineDasharray') ||
+      childNode[getName]('lineDasharray') ||
       childNode.getStyle('lineDasharray', true)
     this.style.line(
       line,