Adapter Interface

/**
 * Adapter interface defining required methods for ripple integration
 * Implement this interface to integrate ripples with custom frameworks
 */
interface MDCRippleAdapter {
  /** Check if browser supports CSS custom properties */
  browserSupportsCssVars(): boolean;
  
  /** Check if this ripple instance is unbounded */
  isUnbounded(): boolean;
  
  /** Check if the surface is currently in active state (:active pseudo-class) */
  isSurfaceActive(): boolean;
  
  /** Check if the surface is disabled */
  isSurfaceDisabled(): boolean;
  
  /** Add CSS class to the ripple surface */
  addClass(className: string): void;
  
  /** Remove CSS class from the ripple surface */
  removeClass(className: string): void;
  
  /** Check if ripple surface contains the given event target */
  containsEventTarget(target: EventTarget | null): boolean;
  
  /** Register event handler on the ripple surface */
  registerInteractionHandler<K extends EventType>(evtType: K, handler: SpecificEventListener<K>): void;
  
  /** Remove event handler from the ripple surface */
  deregisterInteractionHandler<K extends EventType>(evtType: K, handler: SpecificEventListener<K>): void;
  
  /** Register event handler on document.documentElement */
  registerDocumentInteractionHandler<K extends EventType>(evtType: K, handler: SpecificEventListener<K>): void;
  
  /** Remove event handler from document.documentElement */
  deregisterDocumentInteractionHandler<K extends EventType>(evtType: K, handler: SpecificEventListener<K>): void;
  
  /** Register window resize event handler */
  registerResizeHandler(handler: SpecificEventListener<'resize'>): void;
  
  /** Remove window resize event handler */
  deregisterResizeHandler(handler: SpecificEventListener<'resize'>): void;
  
  /** Update CSS custom property on the ripple surface */
  updateCssVariable(varName: string, value: string | null): void;
  
  /** Get bounding rectangle of the ripple surface */
  computeBoundingRect(): DOMRect;
  
  /** Get current window scroll offset coordinates */
  getWindowPageOffset(): MDCRipplePoint;
}

/**
 * Check if browser supports CSS custom properties
 * Should handle Safari 9 compatibility issues with CSS variables
 * @returns True if CSS custom properties are supported
 */
browserSupportsCssVars(): boolean;

// Standard implementation using the provided utility
import { supportsCssVariables } from "@material/ripple/util";

const adapter: MDCRippleAdapter = {
  browserSupportsCssVars: () => supportsCssVariables(window),
  // ... other methods
};

/**
 * Check if this ripple instance is unbounded
 * Unbounded ripples extend beyond the element's boundaries
 * @returns True if ripple is unbounded
 */
isUnbounded(): boolean;

/**
 * Check if the surface is currently in active state
 * Used for keyboard activation detection and proper animation timing
 * @returns True if surface is active (e.g., :active pseudo-class)
 */
isSurfaceActive(): boolean;

/**
 * Check if the surface is disabled
 * Disabled surfaces should not show ripple effects
 * @returns True if surface is disabled
 */
isSurfaceDisabled(): boolean;

/**
 * Add CSS class to the ripple surface
 * @param className - CSS class name to add
 */
addClass(className: string): void;

/**
 * Remove CSS class from the ripple surface  
 * @param className - CSS class name to remove
 */
removeClass(className: string): void;

/**
 * Check if ripple surface contains the given event target
 * Used to determine if events should be handled by this ripple instance
 * @param target - Event target to check
 * @returns True if target is within the ripple surface
 */
containsEventTarget(target: EventTarget | null): boolean;

/**
 * Register event handler on the ripple surface
 * @param evtType - Event type (e.g., 'click', 'touchstart')
 * @param handler - Event handler function
 */
registerInteractionHandler<K extends EventType>(evtType: K, handler: SpecificEventListener<K>): void;

/**
 * Remove event handler from the ripple surface
 * @param evtType - Event type
 * @param handler - Event handler function to remove
 */
deregisterInteractionHandler<K extends EventType>(evtType: K, handler: SpecificEventListener<K>): void;

/**
 * Register event handler on document.documentElement
 * Used for capturing deactivation events outside the surface
 * @param evtType - Event type
 * @param handler - Event handler function
 */
registerDocumentInteractionHandler<K extends EventType>(evtType: K, handler: SpecificEventListener<K>): void;

/**
 * Remove event handler from document.documentElement
 * @param evtType - Event type
 * @param handler - Event handler function to remove
 */
deregisterDocumentInteractionHandler<K extends EventType>(evtType: K, handler: SpecificEventListener<K>): void;

/**
 * Register window resize event handler
 * Used for unbounded ripples that need layout updates on resize
 * @param handler - Resize event handler function
 */
registerResizeHandler(handler: SpecificEventListener<'resize'>): void;

/**
 * Remove window resize event handler
 * @param handler - Resize event handler function to remove
 */
deregisterResizeHandler(handler: SpecificEventListener<'resize'>): void;

/**
 * Update CSS custom property on the ripple surface
 * @param varName - CSS custom property name (e.g., '--mdc-ripple-fg-scale')
 * @param value - CSS property value or null to remove
 */
updateCssVariable(varName: string, value: string | null): void;

/**
 * Get bounding rectangle of the ripple surface
 * Used for ripple size calculations and positioning
 * @returns DOMRect with element dimensions and position
 */
computeBoundingRect(): DOMRect;

/**
 * Get current window scroll offset coordinates
 * Used for accurate event coordinate calculations
 * @returns Object with x and y scroll offsets
 */
getWindowPageOffset(): MDCRipplePoint;

import { MDCRippleAdapter, MDCRipplePoint } from "@material/ripple";
import { supportsCssVariables } from "@material/ripple/util";
import { applyPassive } from "@material/dom/events";
import { matches } from "@material/dom/ponyfill";

class StandardRippleAdapter implements MDCRippleAdapter {
  constructor(private element: HTMLElement, private surface: { unbounded?: boolean; disabled?: boolean }) {}
  
  browserSupportsCssVars(): boolean {
    return supportsCssVariables(window);
  }
  
  isUnbounded(): boolean {
    return Boolean(this.surface.unbounded);
  }
  
  isSurfaceActive(): boolean {
    return matches(this.element, ':active');
  }
  
  isSurfaceDisabled(): boolean {
    return Boolean(this.surface.disabled);
  }
  
  addClass(className: string): void {
    this.element.classList.add(className);
  }
  
  removeClass(className: string): void {
    this.element.classList.remove(className);
  }
  
  containsEventTarget(target: EventTarget | null): boolean {
    return this.element.contains(target as Node);
  }
  
  registerInteractionHandler(evtType: string, handler: EventListener): void {
    this.element.addEventListener(evtType, handler, applyPassive());
  }
  
  deregisterInteractionHandler(evtType: string, handler: EventListener): void {
    this.element.removeEventListener(evtType, handler, applyPassive());
  }
  
  registerDocumentInteractionHandler(evtType: string, handler: EventListener): void {
    document.documentElement.addEventListener(evtType, handler, applyPassive());
  }
  
  deregisterDocumentInteractionHandler(evtType: string, handler: EventListener): void {
    document.documentElement.removeEventListener(evtType, handler, applyPassive());
  }
  
  registerResizeHandler(handler: EventListener): void {
    window.addEventListener('resize', handler);
  }
  
  deregisterResizeHandler(handler: EventListener): void {
    window.removeEventListener('resize', handler);
  }
  
  updateCssVariable(varName: string, value: string | null): void {
    this.element.style.setProperty(varName, value);
  }
  
  computeBoundingRect(): DOMRect {
    return this.element.getBoundingClientRect();
  }
  
  getWindowPageOffset(): MDCRipplePoint {
    return { x: window.pageXOffset, y: window.pageYOffset };
  }
}

import React, { useRef, useEffect } from 'react';
import { MDCRippleFoundation, MDCRippleAdapter } from '@material/ripple';

interface RippleProps {
  unbounded?: boolean;
  disabled?: boolean;
  children: React.ReactNode;
}

export const RippleComponent: React.FC<RippleProps> = ({ 
  unbounded = false, 
  disabled = false, 
  children 
}) => {
  const elementRef = useRef<HTMLDivElement>(null);
  const foundationRef = useRef<MDCRippleFoundation | null>(null);
  
  useEffect(() => {
    if (!elementRef.current) return;
    
    const adapter: MDCRippleAdapter = {
      browserSupportsCssVars: () => CSS.supports('--css-vars', 'yes'),
      isUnbounded: () => unbounded,
      isSurfaceActive: () => elementRef.current?.matches(':active') ?? false,
      isSurfaceDisabled: () => disabled,
      addClass: (className) => elementRef.current?.classList.add(className),
      removeClass: (className) => elementRef.current?.classList.remove(className),
      containsEventTarget: (target) => elementRef.current?.contains(target as Node) ?? false,
      registerInteractionHandler: (evtType, handler) => {
        elementRef.current?.addEventListener(evtType, handler);
      },
      deregisterInteractionHandler: (evtType, handler) => {
        elementRef.current?.removeEventListener(evtType, handler);
      },
      registerDocumentInteractionHandler: (evtType, handler) => {
        document.documentElement.addEventListener(evtType, handler);
      },
      deregisterDocumentInteractionHandler: (evtType, handler) => {
        document.documentElement.removeEventListener(evtType, handler);
      },
      registerResizeHandler: (handler) => {
        window.addEventListener('resize', handler);
      },
      deregisterResizeHandler: (handler) => {
        window.removeEventListener('resize', handler);
      },
      updateCssVariable: (varName, value) => {
        elementRef.current?.style.setProperty(varName, value);
      },
      computeBoundingRect: () => {
        return elementRef.current?.getBoundingClientRect() ?? new DOMRect();
      },
      getWindowPageOffset: () => ({
        x: window.pageXOffset,
        y: window.pageYOffset
      })
    };
    
    foundationRef.current = new MDCRippleFoundation(adapter);
    foundationRef.current.init();
    
    return () => {
      foundationRef.current?.destroy();
    };
  }, [unbounded, disabled]);
  
  return (
    <div ref={elementRef} className="ripple-surface">
      {children}
    </div>
  );
};

// Example for a hypothetical framework
class CustomFrameworkRippleAdapter implements MDCRippleAdapter {
  constructor(
    private component: CustomFrameworkComponent,
    private element: FrameworkElement
  ) {}
  
  browserSupportsCssVars(): boolean {
    return this.component.framework.supportsCssVars();
  }
  
  isUnbounded(): boolean {
    return this.component.getProperty('unbounded');
  }
  
  isSurfaceActive(): boolean {
    return this.component.hasState('active');
  }
  
  isSurfaceDisabled(): boolean {
    return this.component.getProperty('disabled');
  }
  
  addClass(className: string): void {
    this.element.addClass(className);
  }
  
  removeClass(className: string): void {
    this.element.removeClass(className);
  }
  
  containsEventTarget(target: EventTarget | null): boolean {
    return this.element.contains(target);
  }
  
  registerInteractionHandler(evtType: string, handler: EventListener): void {
    this.element.on(evtType, handler);
  }
  
  deregisterInteractionHandler(evtType: string, handler: EventListener): void {
    this.element.off(evtType, handler);
  }
  
  // ... implement remaining methods using framework APIs
}