UPDATE: VERSION-20260327

modeler/src/utils/event.ts

@@ -1,7 +1,7 @@
 /*
  * This file is part of the kernelstudio package.
  *
- * (c) 2014-2025 zlin <admin@kernelstudio.com>
+ * (c) 2014-2026 zlin <admin@kernelstudio.com>
  *
  * For the full copyright and license information, please view the LICENSE file
  * that was distributed with this source code.
@@ -23,14 +23,14 @@ export class EventError {
 
 export class EventListener {
 
-  private readonly _listeners: Record<string, Function[]>;
+  private _listeners: Record<string, Function[]>;
 
   constructor(listeners: Record<string, Function[]> = {}) {
     this._listeners = listeners;
   }
 
   all(): Record<string, Function[]> {
-    return {...this._listeners}; // 返回副本，避免外部直接修改
+    return { ...this._listeners }; // 返回副本，避免外部直接修改
   }
 
   has(name: string): boolean {
@@ -55,16 +55,24 @@ export class EventListener {
       [...listeners].forEach(f => f(options));
     }
   }
+
+  clear(){
+    for (const key in this._listeners) {
+      if (this._listeners.hasOwnProperty(key)) {
+        delete this._listeners[key];
+      }
+    }
+  }
 }
 
 export const safePreventDefault = (event: any) => {
   if (event && typeof event.preventDefault === 'function') {
     event.preventDefault();
   }
-}
+};
 
 export const safeStopPropagation = (event: any) => {
   if (event && typeof event.stopPropagation === 'function') {
     event.stopPropagation();
   }
-}
+};

modeler/src/views/decision/designer/designer.vue

@@ -114,8 +114,16 @@ export default defineComponent({
       fitToScreen,
       centerContent,
       resizeCanvas,
+      destroyGraph,
+      clearGraph,
     } = useGraphCanvas();
 
+    const destroy = ()=> {
+      window.removeEventListener('resize', handleResize);
+      destroyGraph();
+      graph.value = null;
+    }
+
     const loadPlatforms = () => {
       platforms.value = [];
       findAllBasicPlatforms().then(r => {
@@ -213,6 +221,8 @@ export default defineComponent({
     };
 
     const handleSelectTree = (tree: BehaviorTree) => {
+      destroyGraph();
+
       console.info('handleSelectTree', tree);
       findOneTreeById(tree.id).then(r => {
         if (r.data) {
@@ -233,7 +243,9 @@ export default defineComponent({
             graph: nodeGraph,
           };
           currentTreeEditing.value = true;
-          createElements();
+          nextTick(() => {
+            initGraph();
+          });
         } else {
           message.error(r.msg ?? '行为树不存在.');
         }
@@ -241,12 +253,8 @@ export default defineComponent({
     };
 
     const createElements = () => {
+      clearGraph();
       nextTick(() => {
-        try {
-          graph.value?.clearCells();
-        } catch (e: any) {
-          console.error('clear cells error, cause:', e);
-        }
         setTimeout(() => {
           if (currentBehaviorTree.value?.graph && graph.value) {
             if (currentBehaviorTree.value?.graph.nodes) {
@@ -274,6 +282,8 @@ export default defineComponent({
     };
 
     const handleCreateTree = () => {
+      destroyGraph();
+
       currentBehaviorTree.value = {
         id: 0,
         name: '行为树',
@@ -294,7 +304,9 @@ export default defineComponent({
       selectedModelNode.value = null;
       selectedNodeTaskElement.value = null;
 
-      createElements();
+      nextTick(() => {
+        initGraph();
+      });
     };
 
     // 初始化X6画布
@@ -417,18 +429,7 @@ export default defineComponent({
     });
 
     // 清理
-    onBeforeUnmount(() => {
-      window.removeEventListener('resize', handleResize);
-      if (graph.value) {
-        try {
-          graph.value.clearCells();
-        } catch (error) {
-          console.warn('销毁画布时出错:', error);
-        }
-        graph.value = null;
-        console.log('画布已销毁');
-      }
-    });
+    onBeforeUnmount(() => destroy());
 
     return {
       platforms,

modeler/src/views/decision/graph/hooks.ts

@@ -7,7 +7,7 @@
  * that was distributed with this source code.
  */
 
-import { computed, type ComputedRef, ref, type Ref } from 'vue';
+import { computed, type ComputedRef, ref, type Ref, nextTick } from 'vue';
 import { type Dom, Graph, Node } from '@antv/x6';
 import type { NodeViewPositionEventArgs } from '@antv/x6/es/view/node/type';
 import { createGraphCanvas } from './canvas';
@@ -24,6 +24,8 @@ export interface UseGraphCanvas {
   graph: ComputedRef<Graph>;
   zoomIn: () => void;
   zoomOut: () => void;
+  destroyGraph: () => void;
+  clearGraph: () => void;
   fitToScreen: () => void;
   centerContent: () => void;
   resizeCanvas: () => void;
@@ -39,6 +41,36 @@ export const useGraphCanvas = (readonly: boolean = false): UseGraphCanvas => {
   const eventListener = new EventListener();
   const currentZoom = ref<number>(0);
 
+
+  const clearGraph = ()=> {
+    if (graph.value) {
+      try {
+        graph.value.off();
+        graph.value.clearCells();
+      } catch (e) {
+        console.error('清空画布失败:', e);
+      }
+    }
+  }
+
+  const destroyGraph = ()=> {
+    eventListener.clear();
+    if (graph.value) {
+      clearGraph();
+
+      // 等待 Vue 完成卸载
+      nextTick(() => {
+        graph.value?.dispose();     // 销毁 Graph 实例
+        graph.value = null;
+        if (container.value) {
+          container.value.innerHTML = ''; // 清空容器内容
+        }
+      });
+    } else if (container.value) {
+      container.value.innerHTML = '';
+    }
+  }
+
   const handleGraphEvent = (name: string, fn: Function) => {
     eventListener.on(name, fn);
   };
@@ -243,6 +275,8 @@ export const useGraphCanvas = (readonly: boolean = false): UseGraphCanvas => {
   return {
     container,
     readonly,
+    destroyGraph,
+    clearGraph,
     graph: graphInstance,
     eventListener,
     currentZoom,