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              <!--
Also check out:
https://codepen.io/lerouxb/details/hAnHC/
(a later variant)
-->
<div class="color-widget"></div>
            
          
!
            
              // --------------------------------------------------
// Flexbox LESS mixins
// The spec: http://www.w3.org/TR/css3-flexbox
// Source: https://gist.github.com/jayj/4012969
// --------------------------------------------------

// Flexbox display
// flex or inline-flex
.flex-display(@display: flex) {
	display: ~"-webkit-@{display}";
	display: ~"-moz-@{display}";
	display: ~"-ms-@{display}box"; // IE10 uses -ms-flexbox
	display: ~"-ms-@{display}"; // IE11
	display: @display;
}

// The 'flex' shorthand
// - applies to: flex items
// <positive-number>, initial, auto, or none
.flex(@columns: initial) {
  -webkit-flex: @columns;
     -moz-flex: @columns;
      -ms-flex: @columns;
          flex: @columns;
}

// Flex Flow Direction
// - applies to: flex containers
// row | row-reverse | column | column-reverse
.flex-direction(@direction: row) {
  -webkit-flex-direction: @direction;
     -moz-flex-direction: @direction;
      -ms-flex-direction: @direction;
          flex-direction: @direction;
}

// Flex Line Wrapping
// - applies to: flex containers
// nowrap | wrap | wrap-reverse
.flex-wrap(@wrap: nowrap) {
  -webkit-flex-wrap: @wrap;
     -moz-flex-wrap: @wrap;
      -ms-flex-wrap: @wrap;
          flex-wrap: @wrap;
}

// Flex Direction and Wrap
// - applies to: flex containers
// <flex-direction> || <flex-wrap>
.flex-flow(@flow) {
  -webkit-flex-flow: @flow;
     -moz-flex-flow: @flow;
      -ms-flex-flow: @flow;
          flex-flow: @flow;
}

// Display Order
// - applies to: flex items
// <integer>
.flex-order(@order: 0) {
  -webkit-order: @order;
     -moz-order: @order;
      -ms-order: @order;
          order: @order;
}

// Flex grow factor
// - applies to: flex items
// <number>
.flex-grow(@grow: 0) {
  -webkit-flex-grow: @grow;
     -moz-flex-grow: @grow;
      -ms-flex-grow: @grow;
          flex-grow: @grow;
}

// Flex shr
// - applies to: flex itemsink factor
// <number>
.flex-shrink(@shrink: 1) {
  -webkit-flex-shrink: @shrink;
     -moz-flex-shrink: @shrink;
      -ms-flex-shrink: @shrink;
          flex-shrink: @shrink;
}

// Flex basis
// - the initial main size of the flex item
// - applies to: flex itemsnitial main size of the flex item
// <width>
.flex-basis(@width: auto) {
  -webkit-flex-basis: @width;
     -moz-flex-basis: @width;
      -ms-flex-basis: @width;
          flex-basis: @width;
}

// Axis Alignment
// - applies to: flex containers
// flex-start | flex-end | center | space-between | space-around
.justify-content(@justify: flex-start) {
  -webkit-justify-content: @justify;
     -moz-justify-content: @justify;
      -ms-justify-content: @justify;
          justify-content: @justify;
}

// Packing Flex Lines
// - applies to: multi-line flex containers
// flex-start | flex-end | center | space-between | space-around | stretch
.align-content(@align: stretch) {
  -webkit-align-content: @align;
     -moz-align-content: @align;
      -ms-align-content: @align;
          align-content: @align;
}

// Cross-axis Alignment
// - applies to: flex containers
// flex-start | flex-end | center | baseline | stretch
.align-items(@align: stretch) {
  -webkit-align-items: @align;
     -moz-align-items: @align;
      -ms-align-items: @align;
          align-items: @align;
}

// Cross-axis Alignment
// - applies to: flex items
// auto | flex-start | flex-end | center | baseline | stretch
.align-self(@align: auto) {
  -webkit-align-self: @align;
     -moz-align-self: @align;
      -ms-align-self: @align;
          align-self: @align;
}

.color-widget {
  .flex-display();
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}
.column {
  .flex-display();
  .flex-direction(column);
  .flex(1);
}
.shades {
  position: relative;
  .flex-display();
  .flex-direction(column);
  width: 0px;
  transition:width 0.1s linear;
  &.visible {
    width: 50px;
  }
}

.color, .back {
  .flex(1);
  position: relative;
  margin: 0;
  padding: 0;
  border: none;
  cursor: pointer;
  &:focus {
    outline: none;
  }
}
.back {
  background-color: #fff;
}
.shades,
.color.active {
  z-index: 1;
}
.icon {
  font-family: arial;
  font-weight: bold;
  color: #666;
  position: absolute;
  top: 50%;
  left: 50%;
  @size: 50px;
  font-size: @size;
  line-height: @size;
  margin-left: -@size/2 + 1px;
  margin-top: -@size/2;
}
.blackout {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0);
  pointer-events: none;
  transition: background-color 0.1s ease-in;
  &.visible {
    background-color: rgba(0, 0, 0, 0.7);
    pointer-events: auto;
  }
}

            
          
!
            
              colors = null

cancelColor = ->
  $widget = $ '.color-widget'
  $blackout = $widget.find '.blackout'
  $widget.find('.color.active').removeClass('active')
  $shades = $widget.find('.shades')
  $shades.removeClass('visible') # start css animation
  $blackout.removeClass('visible')
  setTimeout ->
    # by now the animation probably finished
    $shades.remove()    
  , 1000

activateColor = ($active) ->
  cancelColor()
  $widget = $ '.color-widget'
  $blackout = $widget.find('.blackout')
  
  name = $active.data 'name'
  $column = $active.parents('.column')

  $shades = $ '<div class="shades"></div>'
  for hex in colors[name]
    $color = $ '<button class="color"></button>'
    $color.attr('data-hex', hex)
    $color.css('background-color', hex)
    $shades.append $color
  
  $column.after($shades)
  
  $active.addClass 'active'
  $blackout.addClass 'visible'
  
  setTimeout ->
    $shades.addClass 'visible'
  , 0
  

  
buildWidget = ->
  $widget = $ '.color-widget'
  
  names = Object.keys(colors)
  columns = []
  for i in [0..3]
    $column = $ '<div class="column visible"></div>'
    $widget.append $column
    columns[i] = $column

  columnNumber = -1
  nextColumn = ->
    columnNumber += 1
    columnNumber = 0 if columnNumber == 4
    columnNumber

  for name, index in names
    # first add the back/close/cancel button
    # in the top right corner
    if index == 3
      $back = $ '<button class="back"><div class="icon">&#10226;</div></button>'
      columns[nextColumn()].append $back
    # (then) add the color
    $color = $ '<button class="color"></button>'
    hex = colors[name][5]
    $color.attr('data-name', name)
    $color.attr('data-hex', hex)
    $color.css('background-color', hex)
    columns[nextColumn()].append $color
  
  $blackout = $ '<div class="blackout"></div>'
  $widget.append $blackout
  
  $widget.find('.blackout').click (e) ->
    e.stopPropagation()
    cancelColor()
    
  $widget.find('.back').click (e) ->
    e.stopPropagation()
    
  $widget.find('.color').click (e) ->
    e.stopPropagation()
    $active = $(e.currentTarget)
    if $active.hasClass 'active'
      cancelColor()
    else
	    activateColor $active
    
# ---

colors =
  Red: [
    '#fde0dc'
    '#f9bdbb'
    '#f69988'
    '#f36c60'
    '#e84e40'
    '#e51c23'
    '#dd191d'
    '#d01716'
    '#c41411'
    '#b0120a'
    '#ff7997'
    '#ff5177'
    '#ff2d6f'
    '#e00032'
  ]

  Pink: [
    '#fce4ec'
    '#f8bbd0'
    '#f48fb1'
    '#f06292'
    '#ec407a'
    '#e91e63'
    '#d81b60'
    '#c2185b'
    '#ad1457'
    '#880e4f'
    '#ff80ab'
    '#ff4081'
    '#f50057'
    '#c51162'
  ]

  Purple: [
    '#f3e5f5'
    '#e1bee7'
    '#ce93d8'
    '#ba68c8'
    '#ab47bc'
    '#9c27b0'
    '#8e24aa'
    '#7b1fa2'
    '#6a1b9a'
    '#4a148c'
    '#ea80fc'
    '#e040fb'
    '#d500f9'
    '#aa00ff'
  ]

  'Deep Purple': [
    '#ede7f6'
    '#d1c4e9'
    '#b39ddb'
    '#9575cd'
    '#7e57c2'
    '#673ab7'
    '#5e35b1'
    '#512da8'
    '#4527a0'
    '#311b92'
    '#b388ff'
    '#7c4dff'
    '#651fff'
    '#6200ea'
  ]

  Indigo: [
    '#e8eaf6'
    '#c5cae9'
    '#9fa8da'
    '#7986cb'
    '#5c6bc0'
    '#3f51b5'
    '#3949ab'
    '#303f9f'
    '#283593'
    '#1a237e'
    '#8c9eff'
    '#536dfe'
    '#3d5afe'
    '#304ffe'
  ]

  Blue: [
    '#e7e9fd'
    '#d0d9ff'
    '#afbfff'
    '#91a7ff'
    '#738ffe'
    '#5677fc'
    '#4e6cef'
    '#455ede'
    '#3b50ce'
    '#2a36b1'
    '#a6baff'
    '#6889ff'
    '#4d73ff'
    '#4d69ff'
  ]

  'Light Blue': [
    '#e1f5fe'
    '#b3e5fc'
    '#81d4fa'
    '#4fc3f7'
    '#29b6f6'
    '#03a9f4'
    '#039be5'
    '#0288d1'
    '#0277bd'
    '#01579b'
    '#80d8ff'
    '#40c4ff'
    '#00b0ff'
    '#0091ea'
  ]

  Cyan: [
    '#e0f7fa'
    '#b2ebf2'
    '#80deea'
    '#4dd0e1'
    '#26c6da'
    '#00bcd4'
    '#00acc1'
    '#0097a7'
    '#00838f'
    '#006064'
    '#84ffff'
    '#18ffff'
    '#00e5ff'
    '#00b8d4'
  ]

  Teal: [
    '#e0f2f1'
    '#b2dfdb'
    '#80cbc4'
    '#4db6ac'
    '#26a69a'
    '#009688'
    '#00897b'
    '#00796b'
    '#00695c'
    '#004d40'
    '#a7ffeb'
    '#64ffda'
    '#1de9b6'
    '#00bfa5'
  ]

  Green: [
    '#d0f8ce'
    '#a3e9a4'
    '#72d572'
    '#42bd41'
    '#2baf2b'
    '#259b24'
    '#0a8f08'
    '#0a7e07'
    '#056f00'
    '#0d5302'
    '#a2f78d'
    '#5af158'
    '#14e715'
    '#12c700'
  ]

  'Light Green': [
    '#f1f8e9'
    '#dcedc8'
    '#c5e1a5'
    '#aed581'
    '#9ccc65'
    '#8bc34a'
    '#7cb342'
    '#689f38'
    '#558b2f'
    '#33691e'
    '#ccff90'
    '#b2ff59'
    '#76ff03'
    '#64dd17'
  ]

  Lime: [
    '#f9fbe7'
    '#f0f4c3'
    '#e6ee9c'
    '#dce775'
    '#d4e157'
    '#cddc39'
    '#c0ca33'
    '#afb42b'
    '#9e9d24'
    '#827717'
    '#f4ff81'
    '#eeff41'
    '#c6ff00'
    '#aeea00'
  ]

  Yellow: [
    '#fffde7'
    '#fff9c4'
    '#fff59d'
    '#fff176'
    '#ffee58'
    '#ffeb3b'
    '#fdd835'
    '#fbc02d'
    '#f9a825'
    '#f57f17'
    '#ffff8d'
    '#ffff00'
    '#ffea00'
    '#ffd600'
  ]

  Amber: [
    '#fff8e1'
    '#ffecb3'
    '#ffe082'
    '#ffd54f'
    '#ffca28'
    '#ffc107'
    '#ffb300'
    '#ffa000'
    '#ff8f00'
    '#ff6f00'
    '#ffe57f'
    '#ffd740'
    '#ffc400'
    '#ffab00'
  ]

  Orange: [
    '#fff3e0'
    '#ffe0b2'
    '#ffcc80'
    '#ffb74d'
    '#ffa726'
    '#ff9800'
    '#fb8c00'
    '#f57c00'
    '#ef6c00'
    '#e65100'
    '#ffd180'
    '#ffab40'
    '#ff9100'
    '#ff6d00'
  ]

  'Deep Orange': [
    '#fbe9e7'
    '#ffccbc'
    '#ffab91'
    '#ff8a65'
    '#ff7043'
    '#ff5722'
    '#f4511e'
    '#e64a19'
    '#d84315'
    '#bf360c'
    '#ff9e80'
    '#ff6e40'
    '#ff3d00'
    '#dd2c00'
  ]

  Brown: [
    '#efebe9'
    '#d7ccc8'
    '#bcaaa4'
    '#a1887f'
    '#8d6e63'
    '#795548'
    '#6d4c41'
    '#5d4037'
    '#4e342e'
    '#3e2723'
  ]

  Grey: [
    '#fafafa'
    '#f5f5f5'
    '#eeeeee'
    '#e0e0e0'
    '#bdbdbd'
    '#9e9e9e'
    '#757575'
    '#616161'
    '#424242'
    '#212121'
    '#000000'
    '#ffffff'
  ]

  'Blue Grey': [
    '#eceff1'
    '#cfd8dc'
    '#b0bec5'
    '#90a4ae'
    '#78909c'
    '#607d8b'
    '#546e7a'
    '#455a64'
    '#37474f'
    '#263238'
  ]

$ ->
  buildWidget()

            
          
!
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