Fix：优化Select插件，如果多选节点没有变化，那么不触发激活激活事件

simple-mind-map/src/plugins/Select.js

@@ -12,6 +12,7 @@ class Select {
     this.mouseMoveX = 0
     this.mouseMoveY = 0
     this.isSelecting = false
+    this.cacheActiveList = []
     this.bindEvent()
   }
 
@@ -31,6 +32,7 @@ class Select {
       }
       e.preventDefault()
       this.isMousedown = true
+      this.cacheActiveList = [...this.mindMap.renderer.activeNodeList]
       let { x, y } = this.mindMap.toPos(e.clientX, e.clientY)
       this.mouseDownX = x
       this.mouseDownY = y
@@ -62,13 +64,10 @@ class Select {
       if (!this.isMousedown) {
         return
       }
-      this.mindMap.emit(
-        'node_active',
-        null,
-        this.mindMap.renderer.activeNodeList
-      )
+      this.checkTriggerNodeActiveEvent()
       clearTimeout(this.autoMoveTimer)
       this.isMousedown = false
+      this.cacheActiveList = []
       if (this.rect) this.rect.remove()
       this.rect = null
       setTimeout(() => {
@@ -77,6 +76,30 @@ class Select {
     })
   }
 
+  // 如果激活节点改变了，那么触发事件
+  checkTriggerNodeActiveEvent() {
+    let isNumChange = this.cacheActiveList.length !== this.mindMap.renderer.activeNodeList.length
+    let isNodeChange = false
+    if (!isNumChange) {
+      for(let i = 0; i < this.cacheActiveList.length; i++) {
+        let cur = this.cacheActiveList[i]
+        if (!this.mindMap.renderer.activeNodeList.find((item) => {
+          return item.nodeData.data.uid === cur.nodeData.data.uid
+        })){
+          isNodeChange = true
+          break
+        }
+      }
+    }
+    if (isNumChange || isNodeChange) {
+      this.mindMap.emit(
+        'node_active',
+        null,
+        this.mindMap.renderer.activeNodeList
+      )
+    }
+  }
+
   //  鼠标移动事件
   onMove(x, y) {
     this.isSelecting = true