feat: 新增数据源

packages/data-source/src/data-sources/Base.ts

@@ -0,0 +1,75 @@
+/*
+ * Tencent is pleased to support the open source community by making TMagicEditor available.
+ *
+ * Copyright (C) 2023 THL A29 Limited, a Tencent company.  All rights reserved.
+ *
+ * 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 EventEmitter from 'events';
+
+import type { DataSchema } from '@tmagic/schema';
+
+import type { DataSourceOptions } from '@data-source/types';
+import { getDefaultValueFromFields } from '@data-source/util';
+
+/**
+ * 静态数据源
+ */
+export default class DataSource extends EventEmitter {
+  public type = 'base';
+
+  public id: string;
+
+  public isInit = false;
+
+  public data: Record<string, any> = {};
+
+  private fields: DataSchema[] = [];
+
+  constructor(options: DataSourceOptions) {
+    super();
+
+    this.id = options.schema.id;
+    this.setFields(options.schema.fields);
+
+    this.updateDefaultData();
+  }
+
+  public setFields(fields: DataSchema[]) {
+    this.fields = fields;
+  }
+
+  public setData(data: Record<string, any>) {
+    // todo: 校验数据，看是否符合 schema
+    this.data = data;
+    this.emit('change');
+  }
+
+  public getDefaultData() {
+    return getDefaultValueFromFields(this.fields);
+  }
+
+  public updateDefaultData() {
+    this.setData(this.getDefaultData());
+  }
+
+  public async init() {
+    this.isInit = true;
+  }
+
+  public destroy() {
+    this.data = {};
+    this.fields = [];
+    this.removeAllListeners();
+  }
+}