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editor.ts
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/* eslint-disable no-console */
/* eslint-disable max-len */
import { StrictEventEmitter } from 'strict-event-emitter-types';
import { EventEmitter } from 'events';
import { EventBus, IEventBus } from './event-bus';
import {
IPublicModelEditor,
EditorConfig,
PluginClassSet,
IPublicTypeEditorValueKey,
IPublicTypeEditorGetResult,
HookConfig,
IPublicTypeComponentDescription,
IPublicTypeRemoteComponentDescription,
GlobalEvent,
} from '@alilc/lowcode-types';
import { engineConfig } from './config';
import { globalLocale } from './intl';
import { obx } from './utils';
import { IPublicTypeAssetsJson, AssetLoader } from '@alilc/lowcode-utils';
import { assetsTransform } from './utils/assets-transform';
EventEmitter.defaultMaxListeners = 100;
// inner instance keys which should not be stored in config
const keyBlacklist = [
'designer',
'skeleton',
'currentDocument',
'simulator',
'plugins',
'setters',
'material',
'innerHotkey',
'innerPlugins',
];
const AssetsCache: {
[key: string]: IPublicTypeRemoteComponentDescription;
} = {};
export declare interface Editor extends StrictEventEmitter<EventEmitter, GlobalEvent.EventConfig> {
addListener(event: string | symbol, listener: (...args: any[]) => void): this;
once(event: string | symbol, listener: (...args: any[]) => void): this;
removeListener(event: string | symbol, listener: (...args: any[]) => void): this;
off(event: string | symbol, listener: (...args: any[]) => void): this;
removeAllListeners(event?: string | symbol): this;
setMaxListeners(n: number): this;
getMaxListeners(): number;
listeners(event: string | symbol): Function[];
rawListeners(event: string | symbol): Function[];
listenerCount(type: string | symbol): number;
// Added in Node 6...
prependListener(event: string | symbol, listener: (...args: any[]) => void): this;
prependOnceListener(event: string | symbol, listener: (...args: any[]) => void): this;
eventNames(): Array<string | symbol>;
}
export interface IEditor extends IPublicModelEditor {
config?: EditorConfig;
components?: PluginClassSet;
eventBus: IEventBus;
init(config?: EditorConfig, components?: PluginClassSet): Promise<any>;
}
// eslint-disable-next-line no-redeclare
export class Editor extends EventEmitter implements IEditor {
/**
* Ioc Container
*/
@obx.shallow private context = new Map<IPublicTypeEditorValueKey, any>();
get locale() {
return globalLocale.getLocale();
}
config?: EditorConfig;
eventBus: EventBus;
components?: PluginClassSet;
// readonly utils = utils;
private hooks: HookConfig[] = [];
private waits = new Map<
IPublicTypeEditorValueKey,
Array<{
once?: boolean;
resolve: (data: any) => void;
}>
>();
constructor(readonly viewName: string = 'global', readonly workspaceMode: boolean = false) {
// eslint-disable-next-line constructor-super
super();
// set global emitter maxListeners
this.setMaxListeners(200);
this.eventBus = new EventBus(this);
}
get<T = undefined, KeyOrType = any>(
keyOrType: KeyOrType,
): IPublicTypeEditorGetResult<T, KeyOrType> | undefined {
return this.context.get(keyOrType as any);
}
has(keyOrType: IPublicTypeEditorValueKey): boolean {
return this.context.has(keyOrType);
}
set(key: IPublicTypeEditorValueKey, data: any): void | Promise<void> {
if (key === 'assets') {
return this.setAssets(data);
}
// store the data to engineConfig while invoking editor.set()
if (!keyBlacklist.includes(key as string)) {
engineConfig.set(key as any, data);
}
this.context.set(key, data);
this.notifyGot(key);
}
async setAssets(assets: IPublicTypeAssetsJson) {
const { components } = assets;
if (components && components.length) {
const componentDescriptions: IPublicTypeComponentDescription[] = [];
const remoteComponentDescriptions: IPublicTypeRemoteComponentDescription[] = [];
components.forEach((component: any) => {
if (!component) {
return;
}
if (component.exportName && component.url) {
remoteComponentDescriptions.push(component);
} else {
componentDescriptions.push(component);
}
});
assets.components = componentDescriptions;
assets.componentList = assets.componentList || [];
// 如果有远程组件描述协议，则自动加载并补充到资产包中，同时出发 designer.incrementalAssetsReady 通知组件面板更新数据
if (remoteComponentDescriptions && remoteComponentDescriptions.length) {
await Promise.all(
remoteComponentDescriptions.map(async (component: IPublicTypeRemoteComponentDescription) => {
const { exportName, url, npm } = component;
if (!url || !exportName) {
return;
}
if (!AssetsCache[exportName] || !npm?.version || AssetsCache[exportName].npm?.version !== npm?.version) {
await (new AssetLoader()).load(url);
}
AssetsCache[exportName] = component;
function setAssetsComponent(component: any, extraNpmInfo: any = {}) {
const components = component.components;
assets.componentList = assets.componentList?.concat(component.componentList || []);
if (Array.isArray(components)) {
components.forEach(d => {
assets.components = assets.components.concat({
npm: {
...npm,
...extraNpmInfo,
},
...d,
} || []);
});
return;
}
if (component.components) {
assets.components = assets.components.concat({
npm: {
...npm,
...extraNpmInfo,
},
...component.components,
} || []);
}
}
function setArrayAssets(value: any[], preExportName: string = '', preSubName: string = '') {
value.forEach((d: any, i: number) => {
const exportName = [preExportName, i.toString()].filter(d => !!d).join('.');
const subName = [preSubName, i.toString()].filter(d => !!d).join('.');
Array.isArray(d) ? setArrayAssets(d, exportName, subName) : setAssetsComponent(d, {
exportName,
subName,
});
});
}
if ((window as any)[exportName]) {
if (Array.isArray((window as any)[exportName])) {
setArrayAssets((window as any)[exportName] as any);
} else {
setAssetsComponent((window as any)[exportName] as any);
}
}
return (window as any)[exportName];
}),
);
}
}
const innerAssets = assetsTransform(assets);
this.context.set('assets', innerAssets);
this.notifyGot('assets');
}
onceGot<T = undefined, KeyOrType extends IPublicTypeEditorValueKey = any>(keyOrType: KeyOrType): Promise<IPublicTypeEditorGetResult<T, KeyOrType>> {
const x = this.context.get(keyOrType);
if (x !== undefined) {
return Promise.resolve(x);
}
return new Promise((resolve) => {
this.setWait(keyOrType, resolve, true);
});
}
onGot<T = undefined, KeyOrType extends IPublicTypeEditorValueKey = any>(
keyOrType: KeyOrType,
fn: (data: IPublicTypeEditorGetResult<T, KeyOrType>) => void,
): () => void {
const x = this.context.get(keyOrType);
if (x !== undefined) {
fn(x);
}
this.setWait(keyOrType, fn);
return () => {
this.delWait(keyOrType, fn);
};
}
onChange<T = undefined, KeyOrType extends IPublicTypeEditorValueKey = any>(
keyOrType: KeyOrType,
fn: (data: IPublicTypeEditorGetResult<T, KeyOrType>) => void,
): () => void {
this.setWait(keyOrType, fn);
return () => {
this.delWait(keyOrType, fn);
};
}
register(data: any, key?: IPublicTypeEditorValueKey): void {
this.context.set(key || data, data);
this.notifyGot(key || data);
}
async init(config?: EditorConfig, components?: PluginClassSet): Promise<any> {
this.config = config || {};
this.components = components || {};
const { hooks = [], lifeCycles } = this.config;
this.emit('editor.beforeInit');
const init = (lifeCycles && lifeCycles.init) || ((): void => { });
try {
await init(this);
// 注册快捷键
// 注册 hooks
this.registerHooks(hooks);
this.emit('editor.afterInit');
return true;
} catch (err) {
console.error(err);
}
}
destroy(): void {
if (!this.config) {
return;
}
try {
const { lifeCycles = {} } = this.config;
this.unregisterHooks();
if (lifeCycles.destroy) {
lifeCycles.destroy(this);
}
} catch (err) {
console.warn(err);
}
}
initHooks = (hooks: HookConfig[]) => {
this.hooks = hooks.map((hook) => ({
...hook,
// 指定第一个参数为 editor
handler: hook.handler.bind(this, this),
}));
return this.hooks;
};
registerHooks = (hooks: HookConfig[]) => {
this.initHooks(hooks).forEach(({ message, type, handler }) => {
if (['on', 'once'].indexOf(type) !== -1) {
this[type]((message as any), handler);
}
});
};
unregisterHooks = () => {
this.hooks.forEach(({ message, handler }) => {
this.removeListener(message, handler);
});
};
private notifyGot(key: IPublicTypeEditorValueKey) {
let waits = this.waits.get(key);
if (!waits) {
return;
}
waits = waits.slice().reverse();
let i = waits.length;
while (i--) {
waits[i].resolve(this.get(key));
if (waits[i].once) {
waits.splice(i, 1);
}
}
if (waits.length > 0) {
this.waits.set(key, waits);
} else {
this.waits.delete(key);
}
}
private setWait(key: IPublicTypeEditorValueKey, resolve: (data: any) => void, once?: boolean) {
const waits = this.waits.get(key);
if (waits) {
waits.push({ resolve, once });
} else {
this.waits.set(key, [{ resolve, once }]);
}
}
private delWait(key: IPublicTypeEditorValueKey, fn: any) {
const waits = this.waits.get(key);
if (!waits) {
return;
}
let i = waits.length;
while (i--) {
if (waits[i].resolve === fn) {
waits.splice(i, 1);
}
}
if (waits.length < 1) {
this.waits.delete(key);
}
}
}
export const commonEvent = new EventBus(new EventEmitter());