@ima/core/dist/esm/client/page/state/PageStateManagerDecorator.js

IMA.js framework for isomorphic javascript application

import { PageStateManager } from './PageStateManager';
import { GenericError } from '../../error/GenericError';
/**
 * Decorator for page state manager, which add logic for limiting Extension
 * competence.
 */ export class PageStateManagerDecorator extends PageStateManager {
    /**
   * The current page state manager.
   */ _pageStateManager;
    /**
   * Array of access keys for state.
   */ _allowedStateKeys;
    /**
   * Initializes the page state manager decorator.
   *
   * @param {PageStateManager} pageStateManager
   * @param {string[]} allowedStateKeys
   */ constructor(pageStateManager, allowedStateKeys){
        super();
        /**
     * The current page state manager.
     */ this._pageStateManager = pageStateManager;
        this._allowedStateKeys = allowedStateKeys;
    }
    /**
   * @inheritDoc
   */ clear() {
        this._pageStateManager.clear();
    }
    /**
   * @inheritDoc
   */ setState(statePatch) {
        if ($Debug) {
            const patchKeys = Object.keys(statePatch);
            const deniedKeys = patchKeys.filter((patchKey)=>{
                return this._allowedStateKeys.indexOf(patchKey) === -1;
            });
            if (deniedKeys.length > 0) {
                throw new GenericError(`Extension can not set state for keys ` + `${deniedKeys.join()}. Check your extension or add keys ` + `${deniedKeys.join()} to getAllowedStateKeys.`);
            }
        }
        this._pageStateManager.setState(statePatch);
    }
    /**
   * @inheritDoc
   */ getState() {
        return this._pageStateManager.getState();
    }
    /**
   * @inheritDoc
   */ getAllStates() {
        return this._pageStateManager.getAllStates();
    }
    /**
   * @inheritDoc
   */ getTransactionStatePatches() {
        return this._pageStateManager.getTransactionStatePatches();
    }
    /**
   * @inheritDoc
   */ beginTransaction() {
        return this._pageStateManager.beginTransaction();
    }
    /**
   * @inheritDoc
   */ commitTransaction() {
        return this._pageStateManager.commitTransaction();
    }
    /**
   * @inheritDoc
   */ cancelTransaction() {
        return this._pageStateManager.cancelTransaction();
    }
}

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