aurelia-hot-module-reload/dist/native-modules/view-traverse-controller.js

Tools designed to enable HMR for Aurelia's loaders.

import { ViewSlot } from 'aurelia-templating';
import { getAuElements } from './aurelia-hot-module-reload';
export function getViewSlots(view) {
    if (view.children && view.children.length) {
        return view.children.filter(function (viewSlot) {
            return viewSlot instanceof ViewSlot && viewSlot.children && viewSlot.children.length;
        });
    }
    return [];
}
export function anyMatchingChildren(viewSlot, matchingTemplate) {
    return !!viewSlot.children.find(function (view) { return view.viewFactory && view.viewFactory.template === matchingTemplate; });
}
export function traverseControllerForTemplates(auController, matchingTemplate) {
    var matchingViewControllers = [];
    var matchingScopeControllers = [];
    var view = (auController.view);
    var scope = (auController.scope);
    var slotsWithMatchingViews = [];
    if (view && view.viewFactory && view.viewFactory.template === matchingTemplate) {
        matchingViewControllers = [auController]; // [view.controller] // whole View and all of its children will be rendered
    }
    else if (scope && scope.controller && scope.viewFactory && scope.viewFactory.template === matchingTemplate) {
        matchingScopeControllers = [scope.controller];
    }
    else {
        var viewViewSlots = view ? getViewSlots(view) : [];
        var scopeViewSlots = scope ? getViewSlots(scope) : [];
        slotsWithMatchingViews = Array.from(new Set(viewViewSlots.concat(scopeViewSlots))).filter(function (slot) { return anyMatchingChildren(slot, matchingTemplate); });
    }
    return {
        matchingViewControllers: matchingViewControllers,
        matchingScopeControllers: matchingScopeControllers,
        slotsWithMatchingViews: slotsWithMatchingViews
    };
}
export function getElementsToRerender(template) {
    // get visible elements to re-render:
    var auElements = getAuElements();
    var controllers = auElements.filter(function (el) {
        /* NOTE: viewless components like blur-image do not have el.au.controller set */
        return el.au && el.au.controller && (el.au.controller.view || el.au.controller.scope);
    }).map(function (el) { return el.au.controller; });
    var viewControllers = new Set();
    var scopeControllers = new Set();
    var slots = new Set();
    controllers
        .forEach(function (controller) {
        var _a = traverseControllerForTemplates(controller, template), matchingViewControllers = _a.matchingViewControllers, matchingScopeControllers = _a.matchingScopeControllers, slotsWithMatchingViews = _a.slotsWithMatchingViews;
        matchingViewControllers.forEach(function (controller) { return viewControllers.add(controller); });
        matchingScopeControllers.forEach(function (controller) { return scopeControllers.add(controller); });
        slotsWithMatchingViews.forEach(function (slot) { return slots.add(slot); });
    });
    var toRender = { viewControllers: viewControllers, scopeControllers: scopeControllers, slots: slots };
    return toRender;
}