feat: manually mirror opencoze's code from bytedance

Change-Id: I09a73aadda978ad9511264a756b2ce51f5761adf

frontend/packages/workflow/playground/src/entities/workflow-template-state-entity.ts

@@ -0,0 +1,99 @@
+/*
+ * Copyright 2025 coze-dev Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+ 
+import { type Workflow } from '@coze-arch/idl/workflow_api';
+import { ConfigEntity } from '@flowgram-adapter/free-layout-editor';
+import { Emitter } from '@flowgram-adapter/common';
+
+interface WorkflowTemplateState {
+  visible: boolean;
+  previewVisible: boolean;
+  previewInfo: Workflow;
+  dataList: Workflow[];
+}
+
+export class WorkflowTemplateStateEntity extends ConfigEntity<WorkflowTemplateState> {
+  static type = 'WorkflowTemplateStateEntity';
+
+  visible: boolean;
+  previewVisible: boolean;
+  previewInfo: Workflow;
+  dataList: Workflow[];
+
+  // 更新后触发
+  onPreviewUpdatedEmitter = new Emitter();
+  onPreviewUpdated = this.onPreviewUpdatedEmitter.event;
+
+  getDefaultConfig(): WorkflowTemplateState {
+    return {
+      visible: false,
+      previewVisible: false,
+      previewInfo: {},
+      dataList: [],
+    };
+  }
+
+  setTemplateList(list: Workflow[]) {
+    this.updateConfig({
+      dataList: list,
+    });
+  }
+
+  openTemplate() {
+    this.updateConfig({
+      visible: true,
+    });
+  }
+
+  closeTemplate() {
+    this.updateConfig({
+      visible: false,
+    });
+  }
+
+  public get templatePreviewInfo() {
+    return this.config.previewInfo;
+  }
+
+  public get templateVisible() {
+    return this.config.visible;
+  }
+
+  public get templateList() {
+    return this.config.dataList;
+  }
+
+  openPreview(templateInfo) {
+    this.updateConfig({
+      previewVisible: true,
+      previewInfo: templateInfo,
+    });
+
+    this.onPreviewUpdatedEmitter.fire({
+      previewVisible: true,
+    });
+  }
+  closePreview() {
+    this.updateConfig({
+      previewVisible: false,
+      previewInfo: undefined,
+    });
+
+    this.onPreviewUpdatedEmitter.fire({
+      previewVisible: false,
+    });
+  }
+}