// Styles
import "./VRipple.sass"; // Utilities

import { isObject, keyCodes } from "../../util/index.mjs"; // Types

const rippleStop = Symbol('rippleStop');
const DELAY_RIPPLE = 80;

function transform(el, value) {
  el.style.transform = value;
  el.style.webkitTransform = value;
}

function opacity(el, value) {
  el.style.opacity = "calc(".concat(value, " * var(--v-theme-overlay-multiplier))");
}

function isTouchEvent(e) {
  return e.constructor.name === 'TouchEvent';
}

function isKeyboardEvent(e) {
  return e.constructor.name === 'KeyboardEvent';
}

const calculate = (e, el, value = {}) => {
  var _el$_ripple;

  let localX = 0;
  let localY = 0;

  if (!isKeyboardEvent(e)) {
    const offset = el.getBoundingClientRect();
    const target = isTouchEvent(e) ? e.touches[e.touches.length - 1] : e;
    localX = target.clientX - offset.left;
    localY = target.clientY - offset.top;
  }

  let radius = 0;
  let scale = 0.3;

  if ((_el$_ripple = el._ripple) == null ? void 0 : _el$_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 = "".concat((el.clientWidth - radius * 2) / 2, "px");
  const centerY = "".concat((el.clientHeight - radius * 2) / 2, "px");
  const x = value.center ? centerX : "".concat(localX - radius, "px");
  const y = value.center ? centerY : "".concat(localY - radius, "px");
  return {
    radius,
    scale,
    x,
    y,
    centerX,
    centerY
  };
};

const ripples = {
  /* eslint-disable max-statements */
  show(e, el, value = {}) {
    var _el$_ripple2;

    if (!(el == null ? void 0 : (_el$_ripple2 = el._ripple) == null ? void 0 : _el$_ripple2.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 += " ".concat(value.class);
    }

    const {
      radius,
      scale,
      x,
      y,
      centerX,
      centerY
    } = calculate(e, el, value);
    const size = "".concat(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(".concat(x, ", ").concat(y, ") scale3d(").concat(scale, ",").concat(scale, ",").concat(scale, ")"));
    opacity(animation, 0);
    animation.dataset.activated = String(performance.now());
    setTimeout(() => {
      animation.classList.remove('v-ripple__animation--enter');
      animation.classList.add('v-ripple__animation--in');
      transform(animation, "translate(".concat(centerX, ", ").concat(centerY, ") scale3d(1,1,1)"));
      opacity(animation, 0.08);
    }, 0);
  },

  hide(el) {
    var _el$_ripple3;

    if (!(el == null ? void 0 : (_el$_ripple3 = el._ripple) == null ? void 0 : _el$_ripple3.enabled)) return;
    const ripples = el.getElementsByClassName('v-ripple__animation');
    if (ripples.length === 0) return;
    const animation = ripples[ripples.length - 1];
    if (animation.dataset.isHiding) 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');
      opacity(animation, 0);
      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;
        }

        animation.parentNode && 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 == null ? void 0 : element._ripple) || element._ripple.touched || e[rippleStop]) return; // Don't allow the event to trigger ripples on any other elements

  e[rippleStop] = 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(() => {
      var _element$_ripple;

      if (element == null ? void 0 : (_element$_ripple = element._ripple) == null ? void 0 : _element$_ripple.showTimerCommit) {
        element._ripple.showTimerCommit();

        element._ripple.showTimerCommit = null;
      }
    }, DELAY_RIPPLE);
  } else {
    ripples.show(e, element, value);
  }
}

function rippleHide(e) {
  const element = e.currentTarget;
  if (!element || !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 = 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 || !element._ripple) return;

  if (element._ripple.showTimerCommit) {
    element._ripple.showTimerCommit = null;
  }

  window.clearTimeout(element._ripple.showTimer);
}

let keyboardRipple = false;

function keyboardRippleShow(e) {
  if (!keyboardRipple && (e.keyCode === keyCodes.enter || e.keyCode === keyCodes.space)) {
    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) {
  var _el$_ripple4;

  const {
    value,
    modifiers
  } = binding;
  const enabled = isRippleEnabled(value);

  if (!enabled) {
    ripples.hide(el);
  }

  el._ripple = (_el$_ripple4 = el._ripple) != null ? _el$_ripple4 : {};
  el._ripple.enabled = enabled;
  el._ripple.centered = modifiers.center;
  el._ripple.circle = modifiers.circle;

  if (isObject(value) && value.class) {
    el._ripple.class = value.class;
  }

  if (enabled && !wasEnabled) {
    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', keyboardRippleShow);
    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('mousedown', rippleShow);
  el.removeEventListener('touchstart', rippleShow);
  el.removeEventListener('touchend', rippleHide);
  el.removeEventListener('touchmove', rippleCancelShow);
  el.removeEventListener('touchcancel', rippleHide);
  el.removeEventListener('mouseup', rippleHide);
  el.removeEventListener('mouseleave', rippleHide);
  el.removeEventListener('keydown', keyboardRippleShow);
  el.removeEventListener('keyup', keyboardRippleHide);
  el.removeEventListener('dragstart', rippleHide);
  el.removeEventListener('blur', focusRippleHide);
}

function mounted(el, binding) {
  updateRipple(el, binding, false);
}

function unmounted(el) {
  delete el._ripple;
  removeListeners(el);
}

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.mjs.map