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project.ts
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import { EventEmitter } from 'events';
import { obx, computed, makeObservable, action } from '@alilc/lowcode-editor-core';
import { Designer } from '../designer';
import { DocumentModel, isDocumentModel, isPageSchema } from '../document';
import { ProjectSchema, RootSchema, TransformStage } from '@alilc/lowcode-types';
import { ISimulatorHost } from '../simulator';
export class Project {
private emitter = new EventEmitter();
@obx.shallow readonly documents: DocumentModel[] = [];
private data: ProjectSchema = { version: '1.0.0', componentsMap: [], componentsTree: [], i18n: {} };
private _simulator?: ISimulatorHost;
/**
* 模拟器
*/
get simulator(): ISimulatorHost | null {
return this._simulator || null;
}
// TODO: 考虑项目级别 History
constructor(readonly designer: Designer, schema?: ProjectSchema) {
makeObservable(this);
this.load(schema);
}
@computed get currentDocument() {
return this.documents.find((doc) => doc.active);
}
@obx private _config: any = {};
@computed get config(): any {
// TODO: parse layout Component
return this._config;
}
set config(value: any) {
this._config = value;
}
@obx.ref private _i18n: any = {};
get i18n(): any {
return this._i18n;
}
set i18n(value: any) {
this._i18n = value || {};
}
/**
* 获取项目整体 schema
*/
getSchema(stage: TransformStage = TransformStage.Save): ProjectSchema {
return {
...this.data,
// TODO: future change this filter
componentsMap: this.currentDocument?.getComponentsMap(),
componentsTree: this.documents.filter((doc) => !doc.isBlank()).map((doc) => doc.export(stage)),
i18n: this.i18n,
};
}
/**
* 替换当前document的schema,并触发渲染器的render
* @param schema
*/
setSchema(schema?: ProjectSchema) {
// FIXME: 这里的行为和 getSchema 并不对等，感觉不太对
const doc = this.documents.find((doc) => doc.active);
doc && doc.import(schema?.componentsTree[0]);
this.simulator?.rerender();
}
/**
* 整体设置项目 schema
*
* @param autoOpen true 自动打开文档 string 指定打开的文件
*/
@action
load(schema?: ProjectSchema, autoOpen?: boolean | string) {
this.unload();
// load new document
this.data = {
version: '1.0.0',
componentsMap: [],
componentsTree: [],
i18n: {},
...schema,
};
this.config = schema?.config || this.config;
this.i18n = schema?.i18n || this.i18n;
if (autoOpen) {
if (autoOpen === true) {
// auto open first document or open a blank page
// this.open(this.data.componentsTree[0]);
const documentInstances = this.data.componentsTree.map((data) => this.createDocument(data));
// TODO: 暂时先读 config tabBar 里的值，后面看整个 layout 结构是否能作为引擎规范
if (this.config?.layout?.props?.tabBar?.items?.length > 0) {
// slice(1)这个贼不雅，默认任务fileName 是类'/fileName'的形式
documentInstances.find((i) => i.fileName === this.config.layout.props.tabBar.items[0].path?.slice(1))?.open();
} else {
documentInstances[0].open();
}
} else {
// auto open should be string of fileName
this.open(autoOpen);
}
}
}
/**
* 卸载当前项目数据
*/
unload() {
if (this.documents.length < 1) {
return;
}
for (let i = this.documents.length - 1; i >= 0; i--) {
this.documents[i].remove();
}
}
removeDocument(doc: DocumentModel) {
const index = this.documents.indexOf(doc);
if (index < 0) {
return;
}
this.documents.splice(index, 1);
this.documentsMap.delete(doc.id);
}
/**
* 分字段设置储存数据，不记录操作记录
*/
set(
// eslint-disable-next-line @typescript-eslint/no-unused-vars
key:
| 'version'
| 'componentsTree'
| 'componentsMap'
| 'utils'
| 'constants'
| 'i18n'
| 'css'
| 'dataSource'
| string,
// eslint-disable-next-line @typescript-eslint/no-unused-vars
value: any,
): void {
if (key === 'config') {
this.config = value;
}
if (key === 'i18n') {
this.i18n = value;
}
Object.assign(this.data, { [key]: value });
}
/**
* 分字段设置储存数据
*/
get(
// eslint-disable-next-line @typescript-eslint/no-unused-vars
key:
| 'version'
| 'componentsTree'
| 'componentsMap'
| 'utils'
| 'constants'
| 'i18n'
| 'css'
| 'dataSource'
| 'config'
| string,
): any {
if (key === 'config') {
return this.config;
}
if (key === 'i18n') {
return this.i18n;
}
return Reflect.get(this.data, key);
}
private documentsMap = new Map<string, DocumentModel>();
getDocument(id: string): DocumentModel | null {
// 此处不能使用 this.documentsMap.get(id)，因为在乐高 rollback 场景，document.id 会被改成其他值
return this.documents.find(doc => doc.id === id) || null;
}
getDocumentByFileName(fileName: string): DocumentModel | null {
return this.documents.find(doc => doc.fileName === fileName) || null;
}
@action
createDocument(data?: RootSchema): DocumentModel {
const doc = new DocumentModel(this, data || this?.data?.componentsTree?.[0]);
this.documents.push(doc);
this.documentsMap.set(doc.id, doc);
return doc;
}
open(doc?: string | DocumentModel | RootSchema): DocumentModel | null {
if (!doc) {
const got = this.documents.find((item) => item.isBlank());
if (got) {
return got.open();
}
doc = this.createDocument();
return doc.open();
}
if (typeof doc === 'string') {
const got = this.documents.find((item) => item.fileName === doc);
if (got) {
return got.open();
}
const data = this.data.componentsTree.find((data) => data.fileName === doc);
if (data) {
doc = this.createDocument(data);
return doc.open();
}
return null;
} else if (isDocumentModel(doc)) {
return doc.open();
}
// else if (isPageSchema(doc)) {
// 暂时注释掉，影响了 diff 功能
// const foundDoc = this.documents.find(curDoc => curDoc?.rootNode?.id && curDoc?.rootNode?.id === doc?.id);
// if (foundDoc) {
// foundDoc.remove();
// }
// }
doc = this.createDocument(doc);
return doc.open();
}
checkExclusive(activeDoc: DocumentModel) {
this.documents.forEach((doc) => {
if (doc !== activeDoc) {
doc.suspense();
}
});
this.emitter.emit('current-document.change', activeDoc);
}
closeOthers(opened: DocumentModel) {
this.documents.forEach((doc) => {
if (doc !== opened) {
doc.close();
}
});
}
/**
* 提供给模拟器的参数
*/
@computed get simulatorProps(): object {
let { simulatorProps } = this.designer;
if (typeof simulatorProps === 'function') {
simulatorProps = simulatorProps(this);
}
return {
...simulatorProps,
project: this,
onMount: this.mountSimulator.bind(this),
};
}
private mountSimulator(simulator: ISimulatorHost) {
// TODO: 多设备 simulator 支持
this._simulator = simulator;
this.designer.editor.set('simulator', simulator);
this.emitter.emit('lowcode_engine_simulator_ready', simulator);
}
setRendererReady(renderer: any) {
this.emitter.emit('lowcode_engine_renderer_ready', renderer);
}
onSimulatorReady(fn: (args: any) => void): () => void {
this.emitter.on('lowcode_engine_simulator_ready', fn);
return () => {
this.emitter.removeListener('lowcode_engine_simulator_ready', fn);
};
}
onRendererReady(fn: (args: any) => void): () => void {
this.emitter.on('lowcode_engine_renderer_ready', fn);
return () => {
this.emitter.removeListener('lowcode_engine_renderer_ready', fn);
};
}
onCurrentDocumentChange(fn: (doc: DocumentModel) => void): () => void {
this.emitter.on('current-document.change', fn);
return () => {
this.emitter.removeListener('current-document.change', fn);
};
}
}