@geogirafe/lib-geoportal/tools/state/componentManager.js

GeoGirafe is a flexible application to build online geoportals.

import GirafeSingleton from '../../base/GirafeSingleton.js';
export default class ComponentManager extends GirafeSingleton {
    components = {};
    componentsCallbacks = [];
    registerComponent(component) {
        this.components[component.name] ??= [];
        this.components[component.name].push(component);
        for (const componentCallbacks of this.componentsCallbacks) {
            if ((componentCallbacks.componentType && component instanceof componentCallbacks.componentType) ||
                (componentCallbacks.componentName && componentCallbacks.componentName === component.name)) {
                componentCallbacks.callbacks.forEach((callback) => callback(component));
            }
        }
    }
    registerComponentCallback(componentOrName, callback) {
        const componentType = typeof componentOrName !== 'string' ? componentOrName : undefined;
        const componentName = typeof componentOrName === 'string' ? componentOrName : undefined;
        let entry = this.componentsCallbacks.find((c) => c.componentType === componentType && c.componentName === componentName);
        if (entry) {
            entry.callbacks.push(callback);
        }
        else {
            entry = { componentType, componentName, callbacks: [callback] };
            this.componentsCallbacks.push(entry);
        }
        // If some components were already registered, the callback is called directly on them.
        for (const registeredComponent of this.getRegisteredComponentsForEntry(componentType, componentName)) {
            callback(registeredComponent);
        }
    }
    getRegisteredComponentsForEntry(componentType, componentName) {
        if (componentName) {
            return this.components[componentName] ?? [];
        }
        if (componentType) {
            return this.getComponents(componentType);
        }
        return [];
    }
    getComponents(type) {
        return Object.values(this.components)
            .flat()
            .filter((c) => c instanceof type);
    }
    getComponentsByName(name) {
        return this.components[name];
    }
}