@import "../../style/themes/default.less";
@import "../../style/mixins/index.less";

@spin-prefix-cls: shield-spin;
@spin-dot-default: #999;
@spin-dot-size: 8px;
@spin-dot-size-sm: @spin-dot-size / 2;
@spin-dot-size-lg: @spin-dot-size * 2;

.@{spin-prefix-cls} {
  color: @primary-color;
  display: inline-block;
  vertical-align: middle;
  text-align: center;
  opacity: 0;
  position: absolute;
  visibility: hidden;
  transition: opacity 0.3s @ease-in-out-circ;
  font-size: @font-size-base;

  &-spinning {
    opacity: 1;
    position: static;
    visibility: visible;
  }

  &-nested-loading {
    position: relative;
  }

  &-nested-loading & {
    position: absolute;
    top: 50%;
    height: 20px;
    line-height: 20px;
    margin-top: -10px;
    z-index: 4;
    text-align: center;
    width: 100%;
  }

  &-container {
    transition: all 0.3s @ease-in-out-circ;
  }

  &-nested-loading > &-container {
    opacity: 0.7;
    -webkit-filter: blur(1px);
    filter: blur(1px);
    filter: ~"progid\:DXImageTransform\.Microsoft\.Blur(PixelRadius\=1, MakeShadow\=false)"; /* IE6~IE9 */
    position: relative;
    &:after {
      content: '';
      position: absolute;
      left: 0;
      right: 0;
      top: 0;
      bottom: 0;
      background: transparent;
    }
  }

  // tip
  // ------------------------------
  &-tip {
    color: @spin-dot-default;
  }

  // dots
  // ------------------------------

  &-dot {
    animation: shieldSpinPulse 1.2s infinite @ease-in-out-circ;
    .square(@spin-dot-size);
    border-radius: 50%;
    display: inline-block;
    background-color: @primary-color;
  }
  &-dot-second {
    animation-delay: .2s;
  }
  &-dot-third {
    animation-delay: .4s;
  }

  &-dot + &-dot {
    margin-left: @spin-dot-size;
  }

  // Sizes
  // ------------------------------
  // small
  &-sm &-dot {
    .square(@spin-dot-size-sm);
    + & {
      margin-left: @spin-dot-size-sm;
    }
  }

  // large
  &-lg &-dot {
    .square(@spin-dot-size-lg);
    + & {
      margin-left: @spin-dot-size-lg;
    }
  }

  &-text,
  &&-show-text &-dot {
    display: none;
  }

  &&-show-text &-text {
    display: block;
  }
}

// pulse
@keyframes shieldSpinPulse {
  0%,
  80%,
  100% {
    opacity: 0;
  }
  40% {
    opacity: 1;
  }
}

@media all and (-ms-high-contrast: none), (-ms-high-contrast: active) {
  /* IE10+ */
  .shield-spin-nested-loading > .shield-spin-container {
    background: #fff;
    opacity: 0.5;
  }
}