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{ VNode, VNodeDirective } from 'vue'\nimport { consoleWarn } from '../util/console'\n\nfunction transform (el: HTMLElement, value: string) {\n  el.style['transform'] = value\n  el.style['webkitTransform'] = value\n}\n\nfunction opacity (el: HTMLElement, value: number) {\n  el.style['opacity'] = value.toString()\n}\n\nexport interface RippleOptions {\n  class?: string\n  center?: boolean\n  circle?: boolean\n}\n\nfunction isTouchEvent (e: MouseEvent | TouchEvent): e is TouchEvent {\n  return e.constructor.name === 'TouchEvent'\n}\n\nconst calculate = (e: MouseEvent | TouchEvent, el: HTMLElement, value: RippleOptions = {}) => {\n  const offset = el.getBoundingClientRect()\n  const target = isTouchEvent(e) ? e.touches[e.touches.length - 1] : e\n  const localX = target.clientX - offset.left\n  const localY = target.clientY - offset.top\n\n  let radius = 0\n  let scale = 0.3\n  if (el._ripple && el._ripple.circle) {\n    scale = 0.15\n    radius = el.clientWidth / 2\n    radius = value.center ? radius : radius + Math.sqrt((localX - radius) ** 2 + (localY - radius) ** 2) / 4\n  } else {\n    radius = Math.sqrt(el.clientWidth ** 2 + el.clientHeight ** 2) / 2\n  }\n\n  const centerX = `${(el.clientWidth - (radius * 2)) / 2}px`\n  const centerY = `${(el.clientHeight - (radius * 2)) / 2}px`\n\n  const x = value.center ? centerX : `${localX - radius}px`\n  const y = value.center ? centerY : `${localY - radius}px`\n\n  return { radius, scale, x, y, centerX, centerY }\n}\n\nconst ripple = {\n  /* eslint-disable max-statements */\n  show (e: MouseEvent | TouchEvent, el: HTMLElement, value: RippleOptions = {}) {\n    if (!el._ripple || !el._ripple.enabled) {\n      return\n    }\n\n    const container = document.createElement('span')\n    const animation = document.createElement('span')\n\n    container.appendChild(animation)\n    container.className = 'v-ripple__container'\n\n    if (value.class) {\n      container.className += ` ${value.class}`\n    }\n\n    const { radius, scale, x, y, centerX, centerY } = calculate(e, el, value)\n\n    const size = `${radius * 2}px`\n    animation.className = 'v-ripple__animation'\n    animation.style.width = size\n    animation.style.height = size\n\n    el.appendChild(container)\n\n    const computed = window.getComputedStyle(el)\n    if (computed && computed.position === 'static') {\n      el.style.position = 'relative'\n      el.dataset.previousPosition = 'static'\n    }\n\n    animation.classList.add('v-ripple__animation--enter')\n    animation.classList.add('v-ripple__animation--visible')\n    transform(animation, `translate(${x}, ${y}) scale3d(${scale},${scale},${scale})`)\n    opacity(animation, 0)\n    animation.dataset.activated = String(performance.now())\n\n    setTimeout(() => {\n      animation.classList.remove('v-ripple__animation--enter')\n      animation.classList.add('v-ripple__animation--in')\n      transform(animation, `translate(${centerX}, ${centerY}) scale3d(1,1,1)`)\n      opacity(animation, 0.25)\n    }, 0)\n  },\n\n  hide (el: HTMLElement | null) {\n    if (!el || !el._ripple || !el._ripple.enabled) return\n\n    const ripples = el.getElementsByClassName('v-ripple__animation')\n\n    if (ripples.length === 0) return\n    const animation = ripples[ripples.length - 1]\n\n    if (animation.dataset.isHiding) return\n    else animation.dataset.isHiding = 'true'\n\n    const diff = performance.now() - Number(animation.dataset.activated)\n    const delay = Math.max(250 - diff, 0)\n\n    setTimeout(() => {\n      animation.classList.remove('v-ripple__animation--in')\n      animation.classList.add('v-ripple__animation--out')\n      opacity(animation, 0)\n\n      setTimeout(() => {\n        const ripples = el.getElementsByClassName('v-ripple__animation')\n        if (ripples.length === 1 && el.dataset.previousPosition) {\n          el.style.position = el.dataset.previousPosition\n          delete el.dataset.previousPosition\n        }\n\n        animation.parentNode && el.removeChild(animation.parentNode)\n      }, 300)\n    }, delay)\n  }\n}\n\nfunction isRippleEnabled (value: any): value is true {\n  return typeof value === 'undefined' || !!value\n}\n\nfunction rippleShow (e: MouseEvent | TouchEvent) {\n  const value: RippleOptions = {}\n  const element = e.currentTarget as HTMLElement\n  if (!element || !element._ripple || element._ripple.touched) return\n  if (isTouchEvent(e)) {\n    element._ripple.touched = true\n  }\n  value.center = element._ripple.centered\n  if (element._ripple.class) {\n    value.class = element._ripple.class\n  }\n  ripple.show(e, element, value)\n}\n\nfunction rippleHide (e: Event) {\n  const element = e.currentTarget as HTMLElement | null\n  if (!element) return\n\n  window.setTimeout(() => {\n    if (element._ripple) {\n      element._ripple.touched = false\n    }\n  })\n  ripple.hide(element)\n}\n\nfunction updateRipple (el: HTMLElement, binding: VNodeDirective, wasEnabled: boolean) {\n  const enabled = isRippleEnabled(binding.value)\n  if (!enabled) {\n    ripple.hide(el)\n  }\n  el._ripple = el._ripple || {}\n  el._ripple.enabled = enabled\n  const value = binding.value || {}\n  if (value.center) {\n    el._ripple.centered = true\n  }\n  if (value.class) {\n    el._ripple.class = binding.value.class\n  }\n  if (value.circle) {\n    el._ripple.circle = value.circle\n  }\n  if (enabled && !wasEnabled) {\n    el.addEventListener('touchstart', rippleShow, { passive: true })\n    el.addEventListener('touchend', rippleHide, { passive: true })\n    el.addEventListener('touchcancel', rippleHide)\n\n    el.addEventListener('mousedown', rippleShow)\n    el.addEventListener('mouseup', rippleHide)\n    el.addEventListener('mouseleave', rippleHide)\n    // Anchor tags can be dragged, causes other hides to fail - #1537\n    el.addEventListener('dragstart', rippleHide, { passive: true })\n  } else if (!enabled && wasEnabled) {\n    removeListeners(el)\n  }\n}\n\nfunction removeListeners (el: HTMLElement) {\n  el.removeEventListener('mousedown', rippleShow)\n  el.removeEventListener('touchstart', rippleHide)\n  el.removeEventListener('touchend', rippleHide)\n  el.removeEventListener('touchcancel', rippleHide)\n  el.removeEventListener('mouseup', rippleHide)\n  el.removeEventListener('mouseleave', rippleHide)\n  el.removeEventListener('dragstart', rippleHide)\n}\n\nfunction directive (el: HTMLElement, binding: VNodeDirective, node: VNode) {\n  updateRipple(el, binding, false)\n\n  // warn if an inline element is used, waiting for el to be in the DOM first\n  node.context && node.context.$nextTick(() => {\n    const computed = window.getComputedStyle(el)\n    if (computed && computed.display === 'inline') {\n      const context = (node as any).fnOptions ? [(node as any).fnOptions, node.context] : [node.componentInstance]\n      consoleWarn('v-ripple can only be used on block-level elements', ...context)\n    }\n  })\n}\n\nfunction unbind (el: HTMLElement) {\n  delete el._ripple\n  removeListeners(el)\n}\n\nfunction update (el: HTMLElement, binding: VNodeDirective) {\n  if (binding.value === binding.oldValue) {\n    return\n  }\n\n  const wasEnabled = isRippleEnabled(binding.oldValue)\n  updateRipple(el, binding, wasEnabled)\n}\n\nexport default {\n  bind: directive,\n  unbind,\n  update\n}\n"],"sourceRoot":""}