class SidebarNavigation {
constructor(options = {}) {
// Basic configuration properties
this.config = {
minWidth: options.minWidth || MegaMenuCONFIG.minWidth, // Using external minWidth variable
menuSelector: options.menuSelector || '.dwc-nest-menu',
openClass: options.openClass || 'brx-open',
activeClasses: options.activeClasses || ['open', 'active'],
leftHeaderClass: options.leftHeaderClass || 'brx-header-left',
rightHeaderClass: options.rightHeaderClass || 'brx-header-right',
debounceDelay: options.debounceDelay || 100,
menuItemClickDelay: options.menuItemClickDelay || 300
};
// Set dependent selectors
const menuSelector = this.config.menuSelector;
this.config.submenuToggleSelector = options.submenuToggleSelector || `${menuSelector} .brx-submenu-toggle`;
this.config.dropdownSelector = options.dropdownSelector || `${menuSelector} .brxe-dropdown`;
this.config.dropdownContentSelector = options.dropdownContentSelector || `${menuSelector} .brx-dropdown-content`;
// State
this.previousHeaderClass = null;
this.dropdownClickHandlers = new Map();
this.menuHoverHandlers = null;
this.menuItemClickTimeout = null;
this.keyboardNavHandler = null;
this.cachedFocusableElements = null;
this.cachedElements = {
menuElement: null,
navElement: null,
dropdowns: null,
dropdownToggles: null,
menuItems: null
};
// Bind methods to this instance
this.handleResize = this.debounce(this.handleMenu.bind(this), this.config.debounceDelay);
this.handleOutsideClick = this.handleOutsideClick.bind(this);
}
// Initialize everything - called once
init() {
// Wait for DOM to be fully loaded before attaching events
if (document.readyState === 'loading') {
document.addEventListener('DOMContentLoaded', () => {
this.initAfterDOMLoaded();
}, { once: true });
} else {
this.initAfterDOMLoaded();
}
return this;
}
// Separate initialization method to run after DOM is loaded
initAfterDOMLoaded() {
// Cache DOM elements once
this.cacheElements();
// Setup resize event with passive flag
window.addEventListener('resize', this.handleResize, { passive: true });
// Setup mutation observer for critical class changes only
this.setupMutationObserver();
// Initial setup based on current screen size
this.handleMenu();
// Cache focusable elements once if header class is present
if (this.hasHeaderClass()) {
this.cacheFocusableElements();
this.setupMenuFocusNavigation();
}
}
// Cache all required DOM elements upfront
cacheElements() {
this.cachedElements.menuElement = document.querySelector(this.config.menuSelector);
if (this.cachedElements.menuElement) {
this.cachedElements.navElement = this.cachedElements.menuElement.querySelector('.dwc-nest-nav-items');
this.cachedElements.dropdowns = Array.from(document.querySelectorAll(this.config.dropdownSelector));
this.cachedElements.dropdownToggles = Array.from(document.querySelectorAll(this.config.submenuToggleSelector));
this.cachedElements.menuItems = Array.from(document.querySelectorAll(`${this.config.menuSelector} .menu-item`));
}
}
// Set up a focused mutation observer only for dropdown state changes
setupMutationObserver() {
if (!this.cachedElements.dropdowns || this.cachedElements.dropdowns.length === 0) return;
const callback = (mutations) => {
for (let mutation of mutations) {
if (mutation.type === 'attributes' && mutation.attributeName === 'class') {
const target = mutation.target;
const prevClassList = mutation.oldValue ? mutation.oldValue.split(' ') : [];
const hadBothBefore = prevClassList.includes('open') && prevClassList.includes('active');
const hasBothNow = target.classList.contains('open') && target.classList.contains('active');
if (hadBothBefore !== hasBothNow) {
this.updateDropdownAccessibility();
break; // Only need to update once per batch
}
}
}
};
// Create observer with optimized options
this.classObserver = new MutationObserver(callback);
// Observe only the dropdown elements
this.cachedElements.dropdowns.forEach(dropdown => {
this.classObserver.observe(dropdown, {
attributes: true,
attributeFilter: ['class'],
attributeOldValue: true
});
});
}
// Cache focusable elements for keyboard navigation
cacheFocusableElements() {
if (!this.cachedElements.navElement) return;
// Get direct children of nav
const directChildren = Array.from(this.cachedElements.navElement.children);
// Find the first focusable element within each direct child
this.cachedFocusableElements = directChildren.map(child => {
// Check if the child itself is focusable
if (child.matches('a, button, input, select, textarea, [tabindex]:not([tabindex="-1"])')) {
return child;
}
// Otherwise, find the first focusable element within this child
return child.querySelector('a, button, input, select, textarea, [tabindex]:not([tabindex="-1"])');
}).filter(Boolean); // Remove null/undefined values
}
// Clean up all event listeners and observers
destroy() {
// Clean up the mutation observer
if (this.classObserver) {
this.classObserver.disconnect();
this.classObserver = null;
}
// Clean up resize listener
window.removeEventListener('resize', this.handleResize);
// Clean up click handlers
if (this.dropdownClickHandlers.size > 0) {
this.dropdownClickHandlers.forEach((handler, toggle) => {
toggle.removeEventListener('click', handler);
});
this.dropdownClickHandlers.clear();
}
// Clean up hover handlers
this.cleanupMenuHover();
// Clean up menu item click handlers
this.cleanupMenuItemClicks();
// Clean up outside click handler
document.removeEventListener('click', this.handleOutsideClick);
// Clean up keyboard navigation
if (this.keyboardNavHandler) {
document.removeEventListener('keydown', this.keyboardNavHandler);
this.keyboardNavHandler = null;
}
// Clear any pending timeouts
if (this.menuItemClickTimeout) {
clearTimeout(this.menuItemClickTimeout);
this.menuItemClickTimeout = null;
}
}
// Utility methods
hasHeaderClass() {
return document.body.classList.contains(this.config.leftHeaderClass) ||
document.body.classList.contains(this.config.rightHeaderClass);
}
debounce(func, delay) {
let timer;
return (...args) => {
clearTimeout(timer);
timer = setTimeout(() => func(...args), delay);
};
}
// Check if an element has all the required active classes
hasAllActiveClasses(element) {
return this.config.activeClasses.every(className => element.classList.contains(className));
}
// Toggle all active classes on an element
toggleActiveClasses(element) {
this.config.activeClasses.forEach(className => {
element.classList.toggle(className);
});
}
// Core functionality methods
handleMenu() {
if (!this.cachedElements.menuElement) return;
if (!this.hasHeaderClass() && !this.previousHeaderClass) return;
const screenWidth = window.innerWidth;
const isLargeScreen = screenWidth >= this.config.minWidth;
const menuElement = this.cachedElements.menuElement;
if (!isLargeScreen) {
// Save which class was present before removal
if (this.hasHeaderClass()) {
this.previousHeaderClass = document.body.classList.contains(this.config.leftHeaderClass)
? this.config.leftHeaderClass
: this.config.rightHeaderClass;
// Remove header classes
document.body.classList.remove(this.config.leftHeaderClass, this.config.rightHeaderClass);
menuElement.classList.remove(this.config.openClass);
// Reset accessibility attributes
this.resetAccessibilityAttributes();
}
// Clean up event handlers for mobile view
this.cleanupMenuHover();
this.cleanupMenuItemClicks();
this.cleanupDropdownHandlers();
document.removeEventListener('click', this.handleOutsideClick);
return;
}
// Large screen behavior
if (!this.hasHeaderClass() && this.previousHeaderClass) {
document.body.classList.add(this.previousHeaderClass);
}
if (this.hasHeaderClass()) {
if (!menuElement.classList.contains(this.config.openClass)) {
menuElement.classList.add(this.config.openClass);
}
// Setup elements for large screen view
this.setupMenuHover();
this.setupMenuItemClicks();
this.setupDropdownHandlers();
this.setupMenuFocusNavigation();
this.updateDropdownAccessibility();
// Ensure outside click handler is set up
document.removeEventListener('click', this.handleOutsideClick);
document.addEventListener('click', this.handleOutsideClick, { passive: false });
}
}
// Reset accessibility attributes when switching to mobile
resetAccessibilityAttributes() {
if (!this.cachedElements.dropdowns) return;
// Remove all inert attributes from dropdown contents
this.cachedElements.dropdowns.forEach(dropdown => {
const content = dropdown.querySelector(this.config.dropdownContentSelector);
if (content) {
content.removeAttribute('inert');
}
const button = dropdown.querySelector('button');
if (button) {
button.setAttribute('aria-expanded', 'false');
}
});
}
setupMenuFocusNavigation() {
// Only run if hasHeaderClass() is true and we have focusable elements
if (!this.hasHeaderClass() || !this.cachedFocusableElements || this.cachedFocusableElements.length === 0) {
return;
}
// Clean up previous handler if it exists
if (this.keyboardNavHandler) {
document.removeEventListener('keydown', this.keyboardNavHandler, true);
this.keyboardNavHandler = null;
}
const navMenu = this.cachedElements.menuElement;
const focusableElements = this.cachedFocusableElements;
const firstFocusableElement = focusableElements[0];
const lastFocusableElement = focusableElements[focusableElements.length - 1];
// Find adjacent focusable elements outside the menu (only once during setup)
const headerElement = navMenu.closest('header') || document.querySelector('header');
// Prepare variables to hold adjacent elements
let prevFocusableElement = null;
let nextFocusableElement = null;
let firstElementAfterHeader = null;
if (headerElement) {
// Get all focusable elements within the header - do this once and cache the result
const headerFocusables = Array.from(
headerElement.querySelectorAll('a:not([tabindex="-1"]), button:not([tabindex="-1"]), input:not([tabindex="-1"]), select:not([tabindex="-1"]), textarea:not([tabindex="-1"]), [tabindex]:not([tabindex="-1"])')
).filter(el => window.getComputedStyle(el).display !== 'none');
// Find the index of our first and last menu elements in one pass
const menuStartIndex = headerFocusables.indexOf(firstFocusableElement);
const menuEndIndex = headerFocusables.indexOf(lastFocusableElement);
// Cache the adjacent elements
if (menuStartIndex > 0) {
prevFocusableElement = headerFocusables[menuStartIndex - 1];
}
if (menuEndIndex !== -1 && menuEndIndex < headerFocusables.length - 1) {
nextFocusableElement = headerFocusables[menuEndIndex + 1];
}
// Pre-calculate the first element after header - but only if needed
if (!nextFocusableElement) {
// Use a more efficient selector that targets immediate children of body that aren't the header
const selector = 'body > *:not(header)';
const nonHeaderElements = document.querySelectorAll(selector);
// Only process if we have elements
if (nonHeaderElements.length > 0) {
// Create a function to find the first focusable element (used later if needed)
this.findFirstFocusableAfterHeader = () => {
for (const element of nonHeaderElements) {
const focusable = element.querySelector('a:not([tabindex="-1"]), button:not([tabindex="-1"]), input:not([tabindex="-1"]), select:not([tabindex="-1"]), textarea:not([tabindex="-1"]), [tabindex]:not([tabindex="-1"])');
if (focusable && window.getComputedStyle(focusable).display !== 'none') {
return focusable;
}
}
return null;
};
}
}
}
// Create keyboard navigation handler with closure over the cached elements
this.keyboardNavHandler = (e) => {
// Quick check for Tab key first
if (e.key !== 'Tab') return;
// Then check if focus is inside the menu
if (!navMenu.contains(document.activeElement)) return;
let targetElement = null;
// Handle tab navigation at boundaries only
if (!e.shiftKey && document.activeElement === lastFocusableElement) {
// Forward tab from last element
e.preventDefault();
e.stopPropagation();
if (nextFocusableElement) {
targetElement = nextFocusableElement;
} else if (this.findFirstFocusableAfterHeader) {
// Only search for elements after header if needed and not already found
firstElementAfterHeader = this.findFirstFocusableAfterHeader();
targetElement = firstElementAfterHeader;
}
// Focus on the target or body as fallback
setTimeout(() => {
if (targetElement) {
targetElement.focus();
} else {
document.body.setAttribute('tabindex', '-1');
document.body.focus();
document.body.removeAttribute('tabindex');
}
}, 10);
}
else if (e.shiftKey && document.activeElement === firstFocusableElement) {
// Backward tab from first element
e.preventDefault();
e.stopPropagation();
setTimeout(() => {
if (prevFocusableElement) {
prevFocusableElement.focus();
} else {
document.body.setAttribute('tabindex', '-1');
document.body.focus();
document.body.removeAttribute('tabindex');
}
}, 10);
}
};
// Use capture phase for the event
document.addEventListener('keydown', this.keyboardNavHandler, true);
}
setupMenuHover() {
const menuElement = this.cachedElements.menuElement;
if (!menuElement) return;
// Clean up existing hover handlers first
this.cleanupMenuHover();
// Create event handlers
const mouseenterHandler = () => {
menuElement.classList.add(this.config.openClass);
};
const mouseleaveHandler = () => {
menuElement.classList.remove(this.config.openClass);
};
// Add event listeners with passive flag for better performance
menuElement.addEventListener('mouseenter', mouseenterHandler, { passive: true });
menuElement.addEventListener('mouseleave', mouseleaveHandler, { passive: true });
// Store the handlers for cleanup
this.menuHoverHandlers = {
element: menuElement,
mouseenter: mouseenterHandler,
mouseleave: mouseleaveHandler
};
}
cleanupMenuHover() {
if (this.menuHoverHandlers) {
const { element, mouseenter, mouseleave } = this.menuHoverHandlers;
element.removeEventListener('mouseenter', mouseenter);
element.removeEventListener('mouseleave', mouseleave);
this.menuHoverHandlers = null;
}
}
setupMenuItemClicks() {
if (!this.cachedElements.menuItems || this.cachedElements.menuItems.length === 0) return;
// Clean up existing handlers first
this.cleanupMenuItemClicks();
const menuElement = this.cachedElements.menuElement;
const menuItemHandlers = new Map();
this.cachedElements.menuItems.forEach(item => {
const clickHandler = () => {
if (this.hasHeaderClass()) {
// Clear any existing timeout
if (this.menuItemClickTimeout) {
clearTimeout(this.menuItemClickTimeout);
}
// Set timeout before adding the class
this.menuItemClickTimeout = setTimeout(() => {
if (!menuElement.classList.contains(this.config.openClass)) {
menuElement.classList.add(this.config.openClass);
}
}, this.config.menuItemClickDelay);
}
};
menuItemHandlers.set(item, clickHandler);
item.addEventListener('click', clickHandler);
});
this.menuItemClickHandlers = menuItemHandlers;
}
cleanupMenuItemClicks() {
if (this.menuItemClickHandlers && this.menuItemClickHandlers instanceof Map) {
this.menuItemClickHandlers.forEach((handler, item) => {
item.removeEventListener('click', handler);
});
this.menuItemClickHandlers.clear();
}
if (this.menuItemClickTimeout) {
clearTimeout(this.menuItemClickTimeout);
this.menuItemClickTimeout = null;
}
}
setupDropdownHandlers() {
if (!this.hasHeaderClass() || !this.cachedElements.dropdownToggles) return;
// Clean up existing handlers first
this.cleanupDropdownHandlers();
this.cachedElements.dropdownToggles.forEach(toggle => {
const clickHandler = (event) => {
event.stopPropagation();
event.preventDefault();
const dropdown = toggle.closest(this.config.dropdownSelector);
if (dropdown) {
this.toggleActiveClasses(dropdown);
this.updateDropdownAccessibility();
}
};
this.dropdownClickHandlers.set(toggle, clickHandler);
toggle.addEventListener('click', clickHandler);
});
}
cleanupDropdownHandlers() {
if (this.dropdownClickHandlers.size > 0) {
this.dropdownClickHandlers.forEach((handler, toggle) => {
toggle.removeEventListener('click', handler);
});
this.dropdownClickHandlers.clear();
}
}
handleOutsideClick(event) {
if (event.target.tagName === 'A') return;
if (!event.target.closest(this.config.dropdownSelector)) return;
if (!event.target.closest(this.config.submenuToggleSelector)) {
event.preventDefault();
event.stopPropagation();
}
}
updateDropdownAccessibility() {
// Only run if hasHeaderClass() is true
if (!this.hasHeaderClass() || !this.cachedElements.dropdowns) return;
this.cachedElements.dropdowns.forEach(dropdown => {
const content = dropdown.querySelector(this.config.dropdownContentSelector);
const button = dropdown.querySelector('button');
// Check if dropdown has all active classes
const isOpen = this.hasAllActiveClasses(dropdown);
if (content) {
if (isOpen) {
content.removeAttribute('inert');
} else {
content.setAttribute('inert', '');
}
}
if (button) {
button.setAttribute('aria-expanded', isOpen ? 'true' : 'false');
}
});
}
}
const sidebarNav = new SidebarNavigation().init();
Metro Vancouver Renovation Services
Purpose-Driven Renovations & Restorations Built on Experience
Crafting Meaningful Transformations into Spaces of Lasting Value
This video documents several stages of residential renovation work completed by the VALROC Development Ltd. team, from interior demolition and structural modifications to new construction, equipment operation, and finished interior installations.
Playback
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Quality
Loop
CaptionsAccessibility
Announcements
Host: Vimeo
Video Duration :34sec
All Renovation Services
At VALROC, our construction services are designed to integrate seamlessly, giving you the flexibility to explore complementary solutions today or scale your project tomorrow.
At VALROC, renovation means more than visual change, it’s about creating spaces that perform better, last longer, and hold measurable value. With extensive experience across Metro Vancouver, our team has completed everything from detailed heritage restorations to full modern conversions of outdated layouts, bringing new life and functionality to existing structures.
We specialize in structural reconfiguration, open-concept transformations, and accessibility upgrades that improve everyday living for homeowners and business owners alike. Whether repositioning load-bearing walls, improving energy efficiency, or ensuring compliance with modern building codes, our work blends design intent with trusted construction practices, resulting in meaningful transformations that endure.
Heritage restoration and character-home upgrades
Structural wall removal and open-concept conversions
Accessibility and mobility renovations for ageing residents
Kitchen, bathroom, and full interior remodelling
Foundation improvements, waterproofing, and floor-plan realignment
Modern material integration with existing structures
Commercial and residential renovation delivery across Metro Vancouver
Who We Serve
Who We Build For
Every project is different, and so are the people behind it. From homeowners and strata corporations to commercial property owners and developers, we tailor our construction services to the unique needs of every client. Explore how we support each customer type below.
One contractor accountable for every major phase of construction.
Structural expertise that goes far beyond kitchens and bathrooms.
In-house excavation, concrete, drainage, framing, and site development working together as one project.
Smarter planning that identifies opportunities while walls, foundations, and services are already exposed.
A renovation that improves the entire property, not just the rooms being remodelled.
Some renovations require far more than new finishes. When projects involve structural changes, home additions, aging infrastructure, or complete property redevelopment, homeowners need a contractor with the experience to manage every critical stage of construction, not just the finishing work.
VALROC specializes in major residential renovations that transform how a home functions for decades to come. From removing load-bearing walls and installing engineered beams to constructing additions, excavating new foundations, waterproofing, perimeter drainage, concrete work, roofing, and complete site redevelopment, our experienced in-house team manages complex projects from planning through completion.
Asphalt repair and road construction in Metro Vancouver with professional paving services by VALROC.
Capital improvement focused on long-term property performance.
Integrated asphalt, concrete, drainage, excavation, and structural construction under one contractor.
Construction planned to maintain resident access and community safety throughout each phase.
Solutions that address aging infrastructure rather than simply replacing failed surfaces.
Professional collaboration with strata councils, property managers, engineers, and consultants.
VALROC partners with strata councils and property managers throughout Metro Vancouver to complete large-scale property improvements. Our projects include roadway reconstruction, parking lot expansions, underground parking ramps, concrete replacement, drainage upgrades, retaining walls, fencing, access improvements, utility structures, gates, and other common property infrastructure designed to serve the entire community.
Because our in-house team performs excavation, drainage, concrete, asphalt, structural construction, and site development, we can complete integrated capital improvement projects under one experienced contractor rather than coordinating multiple trades.
High-capacity industrial warehouse under construction in Metro Vancouver, ideal for logistics and distribution centers.
Flexible construction scheduling that works around daily business operations whenever possible.
Structural renovations, additions, and facility expansions managed under one experienced contractor.
Integrated excavation, concrete, drainage, asphalt, and structural construction services.
Professional collaboration with architects, engineers, consultants, and municipal authorities.
Site-specific safety plans, comprehensive liability coverage, and WorkSafeBC-compliant construction practices.
Commercial renovations require more than quality construction, they require careful planning around business operations. Whether you’re expanding your facility, modifying structural walls, upgrading aging infrastructure, or improving accessibility, every decision should minimize disruption while supporting your long-term business goals.
VALROC works with business owners, property managers, engineers, and architects throughout Metro Vancouver to complete complex commercial renovations and facility improvements. Our projects include structural additions, office construction, manufacturing expansions, accessibility upgrades, foundation work, retaining walls, drainage improvements, structural concrete, parking lot reconstruction, and complete site redevelopment.
Client Experiences
Real Clients. Real Projects. Real Results.
Every successful project is measured by more than the finished construction. From homeowners and strata councils to commercial property managers, our clients trust VALROC to deliver quality workmanship, clear communication, and dependable service. Here are a few of the experiences they’ve shared after working with our team.
An excellent contractor/builder with extensive knowledge and attention to detail. I recommend this builder for restorations, renovations and new builds.
Dominic and his team are the guys to use for anything home building, concrete work, full home renovations - the way they treat their clients and trades are second to none.
VALROC was offered additional scope including preload, site services, rerouting storm mains, fibre optics, 25 kVA power supply to the facility, and including installing all foundation / footings for a large industrial building extension
Every successful construction project starts with the right plan. Tell us about your project, and we’ll arrange a professional on-site consultation to discuss your options, answer your questions, and provide a detailed estimate based on your property’s unique requirements.
Construction workers installing or repairing interior framing in a residential or commercial building in Metro Vancouver.
