修复隐藏模式下展开收起按钮的缺陷

simple-mind-map/src/Node.js

@@ -68,6 +68,7 @@ class Node {
     this.noteEl = null
     this._expandBtn = null
     this._lastExpandBtnType = null
+    this._showExpandBtn = false
     this._openExpandNode = null
     this._closeExpandNode = null
     this._fillExpandNode = null
@@ -75,6 +76,7 @@ class Node {
     this._generalizationLine = null
     this._generalizationNode = null
     this._unVisibleRectRegionNode = null
+    this._isMouseenter = false
     // 尺寸信息
     this._rectInfo = {
       imgContentWidth: 0,
@@ -385,11 +387,13 @@ class Node {
       this.mindMap.emit('node_mouseup', this, e)
     })
     this.group.on('mouseenter', e => {
+      this._isMouseenter = true
       // 显示展开收起按钮
       this.showExpandBtn()
       this.mindMap.emit('node_mouseenter', this, e)
     })
     this.group.on('mouseleave', e => {
+      this._isMouseenter = false
       this.hideExpandBtn()
       this.mindMap.emit('node_mouseleave', this, e)
     })
@@ -449,8 +453,11 @@ class Node {
         this.renderExpandBtn()
       }
     } else {
-      // 如果是收起状态，那么显示展开收起按钮
-      if (!this.nodeData.data.expand) {
+      let { isActive, expand } = this.nodeData.data
+      // 展开状态且非激活状态，且当前鼠标不在它上面，才隐藏
+      if (expand && !isActive && !this._isMouseenter) {
+        this.hideExpandBtn()
+      } else {
         this.showExpandBtn()
       }
     }

simple-mind-map/src/Render.js

@@ -757,14 +757,14 @@ class Render {
         item.render()
       })
       node.renderLine()
-      node.updateExpandBtnNode()
+      // node.updateExpandBtnNode()
     } else {
       // 收缩
       node.children.forEach(item => {
         item.remove()
       })
       node.removeLine()
-      node.updateExpandBtnNode()
+      // node.updateExpandBtnNode()
     }
     this.mindMap.render()
   }

simple-mind-map/src/utils/nodeExpandBtn.js

@@ -98,14 +98,16 @@ function renderExpandBtn() {
     })
     this.group.add(this._expandBtn)
   }
+  this._showExpandBtn = true
   this.updateExpandBtnNode()
   this.updateExpandBtnPos()
 }
 
 //  移除展开收缩按钮
 function removeExpandBtn() {
-  if (this._expandBtn) {
+  if (this._expandBtn && this._showExpandBtn) {
     this._expandBtn.remove()
+    this._showExpandBtn = false
   }
 }
 
@@ -119,7 +121,7 @@ function showExpandBtn() {
 
 // 隐藏展开收起按钮
 function hideExpandBtn() {
-  if (this.mindMap.opt.alwaysShowExpandBtn) return
+  if (this.mindMap.opt.alwaysShowExpandBtn || this._isMouseenter) return
   // 非激活状态且展开状态鼠标移出才隐藏按钮
   let { isActive, expand } = this.nodeData.data
   if (!isActive && expand) {