@ima/core/dist/esm/server/page/handler/PageHandlerRegistry.js

IMA.js framework for isomorphic javascript application

import { PageHandler } from './PageHandler';
import { GenericError } from '../../error/GenericError';
import { SerialBatch } from '../../execution/SerialBatch';
export class PageHandlerRegistry extends PageHandler {
    _pageHandlers;
    _preManageHandlers;
    _postManageHandlers;
    static ExecutionMethod = SerialBatch;
    /**
   * Creates an instance of HandlerRegistry and creates `SerialBatch`
   * instance for pre-handlers and post-handlers.
   * @memberof HandlerRegistry
   */ constructor(...pageHandlers){
        super();
        this._pageHandlers = pageHandlers;
    }
    /**
   * @inheritDoc
   */ init() {
        this._pageHandlers.forEach((handler)=>handler.init());
        this._preManageHandlers = Reflect.construct(PageHandlerRegistry.ExecutionMethod, [
            this._pageHandlers.map((handler)=>handler.handlePreManagedState.bind(handler))
        ]);
        this._postManageHandlers = Reflect.construct(PageHandlerRegistry.ExecutionMethod, [
            this._pageHandlers.map((handler)=>handler.handlePostManagedState.bind(handler))
        ]);
    }
    /**
   * Executes the pre-manage handlers with given arguments
   */ handlePreManagedState(managedPage, nextManagedPage, action) {
        if (!this._preManageHandlers) {
            throw new GenericError('You must call init first.');
        }
        return this._preManageHandlers.execute(managedPage, nextManagedPage, action);
    }
    /**
   * Executes the post-manage handlers with given arguments
   */ handlePostManagedState(managedPage, previousManagedPage, action) {
        return this?._postManageHandlers?.execute(managedPage, previousManagedPage, action);
    }
    /**
   * @inheritDoc
   */ destroy() {
        this._pageHandlers.forEach((handler)=>handler.destroy());
        this._preManageHandlers = undefined;
        this._postManageHandlers = undefined;
        this._pageHandlers = [];
    }
}

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