formstone/src/less/checkbox.less

Library of modular front end components.

/**
 * @component
 * @name Checkbox
 */

@import "imports/utils.less";

// Config

@fs-checkbox-transition-duration: 0.15s;
@fs-checkbox-transition-timing: ease;

@fs-checkbox-marker-height-width: 20px;

@fs-checkbox-flag-background: #666;

// Disabled

@fs-checkbox-disabled-opacity: 0.5;

// Toggle
@fs-checkbox-toggle-marker-background: #666;

@fs-checkbox-toggle-marker-height: 40px;
@fs-checkbox-toggle-marker-width: 100px;

/**
 * @class
 * @name .fs-checkbox-element
 * @type element
 * @description Target elmement
 */

/**
 * @class
 * @name .fs-checkbox
 * @type element
 * @description Base widget class
 */

/**
 * @class
 * @name .fs-checkbox.fs-checkbox-checked
 * @type modifier
 * @description Indicates checked state
 */

/**
 * @class
 * @name .fs-checkbox.fs-checkbox-radio
 * @type modifier
 * @description Indicates radio interface
 */

/**
 * @class
 * @name .fs-checkbox.fs-checkbox-toggle
 * @type modifier
 * @description Indicates toggle interface
 */

/**
 * @class
 * @name .fs-checkbox.fs-checkbox-focus
 * @type modifier
 * @description Indicates focused state
 */

/**
 * @class
 * @name .fs-checkbox.fs-checkbox-disabled
 * @type modifier
 * @description Indicates disabled state
 */

.fs-checkbox {

  display: inline-block;
  vertical-align: middle;

  &,
  &:after,
  &:before,
  *,
  *:after,
  *:before {
    box-sizing: border-box;
    transition: none;
    user-select: none !important;
  }

  &-element_placeholder {
    display: none;
    visibility: hidden;
  }

  &-element {
    width: 110%;
    height: 110%;

    position: absolute;
    top: -5%;
    right: -5%;
    bottom: -5%;
    left: -5%;
    z-index: -1;

    background: transparent;
    border: 0;
    margin: 0;
    padding: 0;
    pointer-events: none;
    transition: none;
    opacity: 0;

    -webkit-appearance: none;
  }

  /**
   * @class
   * @name .fs-checkbox-label
   * @type element
   * @description Label element
   */

  &-label {
    cursor: pointer;
    display: inline-block;
    line-height: @fs-checkbox-marker-height-width;
    overflow: hidden;
    user-select: none;
  }

  /**
   * @class
   * @name .fs-checkbox-marker
   * @type element
   * @description Marker element
   */

  &-marker {
    position: relative;

    width: @fs-checkbox-marker-height-width;
    height: @fs-checkbox-marker-height-width;

    border: 1px solid;
    cursor: pointer;
    display: inline-block;
    // float: left;
  }

  /**
   * @class
   * @name .fs-checkbox-flag
   * @type element
   * @description Flag element
   */

  &-flag {
    width: 100%;
    height: 100%;

    margin: 0;
  }

  &-flag:before {
    width: 5px;
    height: 10px;

    border: 2px solid;
    border-top: 0;
    border-left: 0;
    content: '';
    display: block;
    margin: 3px 0 0 6px;
    transition: transform @fs-checkbox-transition-duration @fs-checkbox-transition-timing;
    transform:
      rotate(45deg)
      scale(0);
  }

  &-checked &-flag:before {
    transform:
      rotate(45deg)
      scale(1);
  }

  // Radio

  &-radio &-marker {
    position: relative;

    border-radius: 100%;
  }

  &-radio &-flag {
    width:  (@fs-checkbox-marker-height-width / 2);
    height: (@fs-checkbox-marker-height-width / 2);

    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;

    background: @fs-checkbox-flag-background;
    border-radius: 100%;
    margin: auto;
    transform: scale(0);
    transition: transform @fs-checkbox-transition-duration @fs-checkbox-transition-timing;

    &:before {
      display: none;
    }
  }

  &-radio&-checked &-flag {
    transform: scale(1);

    &:before {
      display: none;
    }
  }

  // Disabled

  &-disabled {
    cursor: default;
    opacity: @fs-checkbox-disabled-opacity;
  }

  // &-disabled &-label {
    &-label&-disabled {
    cursor: default;
  }

  &-disabled &-marker {
    cursor: default;
  }

  // Toggle

  &-toggle {
    position: relative;
  }

  // &-toggle &-label {
    &-label&-toggle {
    line-height: @fs-checkbox-toggle-marker-height;
  }

  &-toggle &-marker {
    .fs_clearfix();

    width: @fs-checkbox-toggle-marker-width;
    height: @fs-checkbox-toggle-marker-height;

    position: relative;
  }

  &-toggle &-flag {
    width: 50%;
    height: 100%;

    position: absolute;
    top: 0;
    left: 0;

    background: @fs-checkbox-toggle-marker-background;
    display: block;
    transition: left @fs-checkbox-transition-duration @fs-checkbox-transition-timing;
  }

  .no-touch &-toggle:hover &-flag:after {
    opacity: 1;
  }

  &-toggle&-checked &-flag {
    left: 50%;

    &:before {
      display: none;
    }
  }

  &-toggle&-disabled &-flag:after {
    display: none;
  }

  &-toggle &-state {
    width: 50%;

    display: block;
    line-height: @fs-checkbox-toggle-marker-height;
    margin: 0;
    text-align: center;

    &_on {
      float: left;
    }

    &_off {
      float: right;
    }
  }
}