// Styles
import "./VRipple.css";

// Utilities
import { isObject } from "../../util/index.js";
import { Box, getTargetBox } from "../../util/box.js"; // Types
const stopSymbol = Symbol('rippleStop');
const DELAY_RIPPLE = 80;
function transform(el, value) {
  el.style.transform = value;
  el.style.webkitTransform = value;
}
function isTouchEvent(e) {
  return e.constructor.name === 'TouchEvent';
}
function isKeyboardEvent(e) {
  return e.constructor.name === 'KeyboardEvent';
}
const calculate = (e, el, value = {}) => {
  let localX = 0;
  let localY = 0;
  if (!isKeyboardEvent(e)) {
    const offset = new Box(el);
    const target = isTouchEvent(e) ? e.touches[e.touches.length - 1] : e;
    const point = getTargetBox([target.clientX, target.clientY]);
    localX = point.x - offset.left;
    localY = point.y - offset.top;
  }
  let radius = 0;
  let scale = 0.3;
  if (el._ripple?.circle) {
    scale = 0.15;
    radius = el.clientWidth / 2;
    radius = value.center ? radius : radius + Math.sqrt((localX - radius) ** 2 + (localY - radius) ** 2) / 4;
  } else {
    radius = Math.sqrt(el.clientWidth ** 2 + el.clientHeight ** 2) / 2;
  }
  const centerX = `${(el.clientWidth - radius * 2) / 2}px`;
  const centerY = `${(el.clientHeight - radius * 2) / 2}px`;
  const x = value.center ? centerX : `${localX - radius}px`;
  const y = value.center ? centerY : `${localY - radius}px`;
  return {
    radius,
    scale,
    x,
    y,
    centerX,
    centerY
  };
};
const ripples = {
  /* eslint-disable max-statements */
  show(e, el, value = {}) {
    if (!el?._ripple?.enabled) {
      return;
    }
    const container = document.createElement('span');
    const animation = document.createElement('span');
    container.appendChild(animation);
    container.className = 'v-ripple__container';
    if (value.class) {
      container.className += ` ${value.class}`;
    }
    const {
      radius,
      scale,
      x,
      y,
      centerX,
      centerY
    } = calculate(e, el, value);
    const size = `${radius * 2}px`;
    animation.className = 'v-ripple__animation';
    animation.style.width = size;
    animation.style.height = size;
    el.appendChild(container);
    const computed = window.getComputedStyle(el);
    if (computed && computed.position === 'static') {
      el.style.position = 'relative';
      el.dataset.previousPosition = 'static';
    }
    animation.classList.add('v-ripple__animation--enter');
    animation.classList.add('v-ripple__animation--visible');
    transform(animation, `translate(${x}, ${y}) scale3d(${scale},${scale},${scale})`);
    animation.dataset.activated = String(performance.now());
    requestAnimationFrame(() => {
      requestAnimationFrame(() => {
        animation.classList.remove('v-ripple__animation--enter');
        animation.classList.add('v-ripple__animation--in');
        transform(animation, `translate(${centerX}, ${centerY}) scale3d(1,1,1)`);
      });
    });
  },
  hide(el) {
    if (!el?._ripple?.enabled) return;
    const ripples = el.getElementsByClassName('v-ripple__animation');
    if (ripples.length === 0) return;
    const animation = Array.from(ripples).findLast(ripple => !ripple.dataset.isHiding);
    if (!animation) return;else animation.dataset.isHiding = 'true';
    const diff = performance.now() - Number(animation.dataset.activated);
    const delay = Math.max(250 - diff, 0);
    setTimeout(() => {
      animation.classList.remove('v-ripple__animation--in');
      animation.classList.add('v-ripple__animation--out');
      setTimeout(() => {
        const ripples = el.getElementsByClassName('v-ripple__animation');
        if (ripples.length === 1 && el.dataset.previousPosition) {
          el.style.position = el.dataset.previousPosition;
          delete el.dataset.previousPosition;
        }
        if (animation.parentNode?.parentNode === el) el.removeChild(animation.parentNode);
      }, 300);
    }, delay);
  }
};
function isRippleEnabled(value) {
  return typeof value === 'undefined' || !!value;
}
function rippleShow(e) {
  const value = {};
  const element = e.currentTarget;
  if (!element?._ripple || element._ripple.touched || e[stopSymbol]) return;

  // Don't allow the event to trigger ripples on any other elements
  e[stopSymbol] = true;
  if (isTouchEvent(e)) {
    element._ripple.touched = true;
    element._ripple.isTouch = true;
  } else {
    // It's possible for touch events to fire
    // as mouse events on Android/iOS, this
    // will skip the event call if it has
    // already been registered as touch
    if (element._ripple.isTouch) return;
  }
  value.center = element._ripple.centered || isKeyboardEvent(e);
  if (element._ripple.class) {
    value.class = element._ripple.class;
  }
  if (isTouchEvent(e)) {
    // already queued that shows or hides the ripple
    if (element._ripple.showTimerCommit) return;
    element._ripple.showTimerCommit = () => {
      ripples.show(e, element, value);
    };
    element._ripple.showTimer = window.setTimeout(() => {
      if (element?._ripple?.showTimerCommit) {
        element._ripple.showTimerCommit();
        element._ripple.showTimerCommit = null;
      }
    }, DELAY_RIPPLE);
  } else {
    ripples.show(e, element, value);
  }
}
function rippleStop(e) {
  e[stopSymbol] = true;
}
function rippleHide(e) {
  const element = e.currentTarget;
  if (!element?._ripple) return;
  window.clearTimeout(element._ripple.showTimer);

  // The touch interaction occurs before the show timer is triggered.
  // We still want to show ripple effect.
  if (e.type === 'touchend' && element._ripple.showTimerCommit) {
    element._ripple.showTimerCommit();
    element._ripple.showTimerCommit = null;

    // re-queue ripple hiding
    element._ripple.showTimer = window.setTimeout(() => {
      rippleHide(e);
    });
    return;
  }
  window.setTimeout(() => {
    if (element._ripple) {
      element._ripple.touched = false;
    }
  });
  ripples.hide(element);
}
function rippleCancelShow(e) {
  const element = e.currentTarget;
  if (!element?._ripple) return;
  if (element._ripple.showTimerCommit) {
    element._ripple.showTimerCommit = null;
  }
  window.clearTimeout(element._ripple.showTimer);
}
let keyboardRipple = false;
function keyboardRippleShow(e, keys) {
  if (!keyboardRipple && keys.includes(e.key)) {
    keyboardRipple = true;
    rippleShow(e);
  }
}
function keyboardRippleHide(e) {
  keyboardRipple = false;
  rippleHide(e);
}
function focusRippleHide(e) {
  if (keyboardRipple) {
    keyboardRipple = false;
    rippleHide(e);
  }
}
function updateRipple(el, binding, wasEnabled) {
  const {
    value,
    modifiers
  } = binding;
  const enabled = isRippleEnabled(value);
  if (!enabled) {
    ripples.hide(el);
  }
  el._ripple = el._ripple ?? {};
  el._ripple.enabled = enabled;
  el._ripple.centered = modifiers.center;
  el._ripple.circle = modifiers.circle;
  const bindingValue = isObject(value) ? value : {};
  if (bindingValue.class) {
    el._ripple.class = bindingValue.class;
  }
  const allowedKeys = bindingValue.keys ?? ['Enter', 'Space'];
  el._ripple.keyDownHandler = e => keyboardRippleShow(e, allowedKeys);
  if (enabled && !wasEnabled) {
    if (modifiers.stop) {
      el.addEventListener('touchstart', rippleStop, {
        passive: true
      });
      el.addEventListener('mousedown', rippleStop);
      return;
    }
    el.addEventListener('touchstart', rippleShow, {
      passive: true
    });
    el.addEventListener('touchend', rippleHide, {
      passive: true
    });
    el.addEventListener('touchmove', rippleCancelShow, {
      passive: true
    });
    el.addEventListener('touchcancel', rippleHide);
    el.addEventListener('mousedown', rippleShow);
    el.addEventListener('mouseup', rippleHide);
    el.addEventListener('mouseleave', rippleHide);
    el.addEventListener('keydown', el._ripple.keyDownHandler);
    el.addEventListener('keyup', keyboardRippleHide);
    el.addEventListener('blur', focusRippleHide);

    // Anchor tags can be dragged, causes other hides to fail - #1537
    el.addEventListener('dragstart', rippleHide, {
      passive: true
    });
  } else if (!enabled && wasEnabled) {
    removeListeners(el);
  }
}
function removeListeners(el) {
  el.removeEventListener('touchstart', rippleStop);
  el.removeEventListener('mousedown', rippleStop);
  el.removeEventListener('touchstart', rippleShow);
  el.removeEventListener('touchend', rippleHide);
  el.removeEventListener('touchmove', rippleCancelShow);
  el.removeEventListener('touchcancel', rippleHide);
  el.removeEventListener('mousedown', rippleShow);
  el.removeEventListener('mouseup', rippleHide);
  el.removeEventListener('mouseleave', rippleHide);
  if (el._ripple?.keyDownHandler) {
    el.removeEventListener('keydown', el._ripple.keyDownHandler);
  }
  el.removeEventListener('keyup', keyboardRippleHide);
  el.removeEventListener('blur', focusRippleHide);
  el.removeEventListener('dragstart', rippleHide);
}
function mounted(el, binding) {
  updateRipple(el, binding, false);
}
function unmounted(el) {
  removeListeners(el);
  delete el._ripple;
}
function updated(el, binding) {
  if (binding.value === binding.oldValue) {
    return;
  }
  const wasEnabled = isRippleEnabled(binding.oldValue);
  updateRipple(el, binding, wasEnabled);
}
export const Ripple = {
  mounted,
  unmounted,
  updated
};
export default Ripple;
//# sourceMappingURL=index.js.map