+ add chosen.less.

examples/chosen-docsupport/style.css

+h2.intro { border-bottom: none; font-size: 1em; font-weight: normal; margin-top:0; }
+
+div.side-by-side { width: 100%; margin-bottom: 1em; }
+div.side-by-side > div { float: left; width: 49%; }
+div.side-by-side > div > em { margin-bottom: 10px; display: block; }
+
+.faqs em { display: block; }
+
+ul.credits li { margin-bottom: .25em; }
+
+
+.docs-table th, .docs-table td {
+  border: 1px solid #000;
+  padding: 4px 6px;
+  white-space: nowrap;
+}
+
+.docs-table td:last-child {
+  white-space: normal;
+}
+
+.docs-table th {
+  font-weight: bold;
+  text-align: left;
+}
+
+#content pre[class*=language-] {
+  font-size: 14px;
+  margin-bottom: 20px;
+}
+
+#content pre[class*=language-] code {
+  font-size: 14px;
+  padding: 0;
+}
+
+#content code[class*=language-] {
+  font-size: 12px;
+  padding: 2px 4px;
+}
+
+.anchor {
+  color: inherit;
+  position: relative;
+}
+
+.anchor:hover {
+  background: url(data:image/svg+xml;base64,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) 0 50% no-repeat;
+  background-size: 21px 9px;
+  margin-left: -27px;
+  padding-left: 27px;
+  text-decoration: none;
+}

src/less/modules/choosen.less

+// Depends on the dropdown.less
+
+@chosen-sprite: image-url('chosen-sprite.png');
+@chosen-sprite-retina: image-url('chosen-sprite@2x.png');
+
+/* @group Base */
+.chosen-container
+{
+  position: relative;
+  display: inline-block;
+  vertical-align: middle;
+  font-size: 13px;
+  zoom: 1;
+  *display: inline;
+  .user-select(none);
+  .chosen-drop 
+  {
+    position: absolute;
+    top: 100%;
+    left: -9999px;
+    z-index: 1010;
+    .box-sizing(border-box);
+    width: 100%;
+    border: 1px solid @dropdown-fallback-border; // IE8 fallback
+    border: 1px solid @dropdown-border;
+    border-top: 0;
+    background: #fff;
+    box-shadow: 0 4px 5px rgba(0,0,0,.15);
+  }
+  &.chosen-with-drop .chosen-drop { left: 0; }
+  a { cursor: pointer; }
+}
+/* @end */
+
+/* @group Single Chosen */
+.chosen-container-single
+{
+  .chosen-single
+  {
+    // position: relative;
+    display: block;
+    overflow: hidden;
+    padding: @padding-base-vertical @padding-small-horizontal;
+    height: @input-height-base;
+    width: 100%;
+    border: 1px solid @input-border;
+    border-radius: @input-border-radius;
+    background-color: @input-bg;
+    background-clip: padding-box;
+    vertical-align: middle;
+    color: @input-color;
+    text-decoration: none;
+    white-space: nowrap;
+    line-height: @line-height-base;
+    .box-shadow(inset 0 1px 1px rgba(0,0,0,.075));
+    .transition(~"border-color ease-in-out .15s, box-shadow ease-in-out .15s");
+  }
+
+  .chosen-default 
+  {
+    color: @input-color-placeholder;
+  }
+
+  .chosen-single span
+  {
+    display: block;
+    overflow: hidden;
+    margin-right: 26px;
+    text-overflow: ellipsis;
+    white-space: nowrap;
+  }
+  .chosen-single-with-deselect span
+  {
+    margin-right: 38px;
+  }
+  .chosen-single abbr
+  {
+    position: absolute;
+    top: 7px;
+    right: 30px;
+    display: block;
+    height: (@font-size-base * 1.5);
+    font-size: (@font-size-base * 1.5);
+    font-weight: @close-font-weight;
+    line-height: 1;
+    color: @close-color;
+    text-shadow: @close-text-shadow;
+    .opacity(.2);
+    &:before
+    {
+      content: '×';
+    }
+    &:hover,
+    &:focus {
+      color: @close-color;
+      text-decoration: none;
+      cursor: pointer;
+      .opacity(.5);
+    }
+  }
+  &.chosen-disabled .chosen-single abbr:hover
+  {
+
+  }
+  .chosen-single div
+  {
+    position: absolute;
+    top: 0;
+    right: 0;
+    display: block;
+    height: 100%;
+    padding: @padding-base-vertical @padding-small-horizontal;
+    b
+    {
+      .caret();
+      // display: block;
+      // width: 100%;
+      // height: 100%;
+      // background: @chosen-sprite no-repeat 0px 2px;
+    }
+  }
+  .chosen-search
+  {
+    position: relative;
+    z-index: 1010;
+    margin: 0;
+    padding: 3px 4px;
+    white-space: nowrap;
+    input[type="text"]
+    {
+      .box-sizing(border-box);
+      margin: 1px 0;
+      padding: @padding-small-vertical 26px @padding-small-vertical @padding-small-horizontal;
+      width: 100%;
+      height: auto;
+      outline: 0;
+      border: 1px solid @input-border;
+      border-radius: @input-border-radius;
+      background-color: @input-bg;
+      font-size: @font-size-small;
+      line-height: @line-height-small;
+
+      &:focus
+      {
+        border-color: @input-border-focus;
+      }
+    }
+
+    &:before
+    {
+      position: absolute;
+      display: block;
+      right: 10px;
+      color: @gray;
+      top: 10px;
+      content: "\f002";
+      font-family: @icon-font-name;
+    }
+  }
+  .chosen-drop {
+    margin-top: -1px;
+    border-radius: 0 0 @border-radius-base @border-radius-base;
+    background-clip: padding-box;
+  }
+  &.chosen-container-single-nosearch .chosen-search {
+    position: absolute;
+    left: -9999px;
+  }
+}
+/* @end */
+
+/* @group Results */
+.chosen-container .chosen-results {
+  position: relative;
+  overflow-x: hidden;
+  overflow-y: auto;
+  margin: 0;
+  padding: 0;
+  max-height: 240px;
+  -webkit-overflow-scrolling: touch;
+  li {
+    display: none;
+    margin: 0;
+    padding: 5px 10px;
+    list-style: none;
+    line-height: 15px;
+    -webkit-touch-callout: none;
+    .transition(all,@animation-speed-fast,@animation-type);
+    &.active-result {
+      display: list-item;
+      cursor: pointer;
+    }
+    &.disabled-result {
+      display: list-item;
+      color: #ccc;
+      cursor: default;
+    }
+    &.highlighted {
+      color: @dropdown-link-hover-color;
+      background-color: @dropdown-link-hover-bg;
+      .active-mark-left();
+    }
+    &.no-results {
+      display: list-item;
+      background: #f4f4f4;
+    }
+    &.group-result {
+      display: list-item;
+      font-weight: bold;
+      cursor: default;
+    }
+    &.group-option {
+      padding-left: 15px;
+    }
+    em {
+      font-style: normal;
+      text-decoration: underline;
+    }
+  }
+}
+/* @end */
+
+/* @group Multi Chosen */
+.chosen-container-multi{
+  .chosen-choices {
+    position: relative;
+    overflow: hidden;
+    .box-sizing(border-box);
+    margin: 0;
+    padding: @padding-base-vertical 5px;
+    padding-bottom: 1px;
+    width: 100%;
+    height: auto !important;
+    height: 1%;
+    min-height: @input-height-base;
+    border: 1px solid @input-border;
+    border-radius: @input-border-radius;
+    background-color: @input-bg;
+    .box-shadow(inset 0 1px 1px rgba(0,0,0,.075));
+    .transition(~"border-color ease-in-out .15s, box-shadow ease-in-out .15s");
+    cursor: text;
+  }
+  .chosen-choices li {
+    float: left;
+    list-style: none;
+    &.search-field {
+      margin: 0;
+      padding: 0;
+      white-space: nowrap;
+      input[type="text"] {
+        margin: 1px 0;
+        padding: 5px;
+        height: 15px;
+        outline: 0;
+        border: 0 !important;
+        background: transparent !important;
+        box-shadow: none;
+        color: #666;
+        font-size: 100%;
+        font-family: sans-serif;
+        line-height: normal;
+        border-radius: 0;
+      }
+      .default {
+        color: #999;
+      }
+    }
+    &.search-choice {
+      position: relative;
+      margin: 0 4px 4px 0;
+      padding: 3px 20px 3px 5px;
+      background-color: @gray-pale;
+      border-radius: @border-radius-small;
+      border: 1px solid @gray-light;
+      background-clip: padding-box; 
+      .box-shadow(~"0 0 2px #fff inset, 0 1px 0 rgba(0,0,0,.05)");
+      line-height: 13px;
+      cursor: default;
+      .transition(all,@animation-speed-normal,@animation-type);
+      
+      &:hover
+      {
+        border-color: darken(@gray-light, 10%);
+        background-color: lighten(@gray-pale, 10%);
+        .box-shadow(~"0 1px 0 rgba(0,0,0,.1)");
+      }
+
+      .search-choice-close 
+      {
+        position: absolute;
+        top: 0px;
+        right: 3px;
+        display: block;
+        height: (@font-size-base * 1.5);
+        font-size: (@font-size-base * 1.5);
+        font-weight: @close-font-weight;
+        line-height: 1;
+        color: @close-color;
+        text-shadow: @close-text-shadow;
+        .opacity(.2);
+        &:before
+        {
+          content: '×';
+        }
+        &:hover,
+        &:focus {
+          color: @close-color;
+          text-decoration: none;
+          cursor: pointer;
+          .opacity(.5);
+        }
+      }
+    }
+    &.search-choice-disabled {
+      padding-right: 5px;
+      border: 1px solid #ccc;
+      background-color: #e4e4e4;
+      // @include background-image(linear-gradient(top, #f4f4f4 20%, #f0f0f0 50%, #e8e8e8 52%, #eee 100%));
+      color: #666;
+    }
+    &.search-choice-focus {
+      background: #d4d4d4;
+      .search-choice-close {
+        background-position: -42px -10px;
+      }
+    }
+  }
+  .chosen-results {
+    margin: 0;
+    padding: 0;
+  }
+  .chosen-drop .result-selected {
+    display: list-item;
+    color: #ccc;
+    cursor: default;
+  }
+}
+/* @end */
+
+/* @group Active  */
+.chosen-container-active{
+  .chosen-single {
+    border: 1px solid @input-border-focus;
+    .box-shadow(~"inset 0 1px 1px rgba(0,0,0,.175)");
+  }
+  &.chosen-with-drop{
+    .chosen-single {
+      border: 1px solid @dropdown-fallback-border; // IE8 fallback
+      border: 1px solid @dropdown-border;
+      -moz-border-radius-bottomright: 0;
+      border-bottom-right-radius: 0;
+      -moz-border-radius-bottomleft: 0;
+      border-bottom-left-radius: 0;
+      // @include background-image(linear-gradient(#eee 20%, #fff 80%));
+      .box-shadow(0 6px 12px rgba(0,0,0,.175));
+    }
+    .chosen-single div {
+      border-left: none;
+      background: transparent;
+      b
+      {
+        .caret-reverse();
+      }
+    }
+  }
+  .chosen-choices {
+    border: 1px solid @input-border-focus;
+    .box-shadow(~"inset 0 1px 1px rgba(0,0,0,.175)");
+    li.search-field input[type="text"] {
+      color: #111 !important;
+    }
+  }
+}
+/* @end */
+
+/* @group Disabled Support */
+.chosen-disabled {
+  opacity: 0.5 !important;
+  cursor: default;
+  .chosen-single {
+    cursor: default;
+  }
+  .chosen-choices .search-choice .search-choice-close {
+    cursor: default;
+  }
+}
+/* @end */
+
+// /* @group Right to Left */
+// .chosen-rtl {
+//   text-align: right;
+//   .chosen-single {
+//     overflow: visible;
+//     padding: 0 8px 0 0;
+//   }
+//   .chosen-single span {
+//     margin-right: 0;
+//     margin-left: 26px;
+//     direction: rtl;
+//   }
+//   .chosen-single-with-deselect span {
+//     margin-left: 38px;
+//   }
+//   .chosen-single div {
+//     right: auto;
+//     left: 3px;
+//   }
+//   .chosen-single abbr {
+//     right: auto;
+//     left: 26px;
+//   }
+//   .chosen-choices li {
+//     float: right;
+//     &.search-field input[type="text"] {
+//       direction: rtl;
+//     }
+//     &.search-choice {
+//       margin: 3px 5px 3px 0;
+//       padding: 3px 5px 3px 19px;
+//       .search-choice-close {
+//         right: auto;
+//         left: 4px;
+//       }
+//     }
+//   }
+//   &.chosen-container-single-nosearch .chosen-search,
+//   .chosen-drop {
+//     left: 9999px;
+//   }
+//   &.chosen-container-single .chosen-results {
+//     margin: 0 0 4px 4px;
+//     padding: 0 4px 0 0;
+//   }
+//   .chosen-results li.group-option {
+//     padding-right: 15px;
+//     padding-left: 0;
+//   }
+//   &.chosen-container-active.chosen-with-drop .chosen-single div {
+//     border-right: none;
+//   }
+//   .chosen-search input[type="text"] {
+//     padding: 4px 5px 4px 20px;
+//     background: #fff @chosen-sprite no-repeat -30px -20px;
+//     direction: rtl;
+//   }
+//   &.chosen-container-single{
+//     .chosen-single div b {
+//       background-position: 6px 2px;
+//     }
+//     &.chosen-with-drop{
+//       .chosen-single div b {
+//         background-position: -12px 2px;
+//       }
+//     }
+//   }
+// }
+
+/* @end */
+
+/* @group Retina compatibility */
+@media only screen and (-webkit-min-device-pixel-ratio: 2), only screen and (min-resolution: 144dpi)  {
+  .chosen-rtl .chosen-search input[type="text"],
+  .chosen-container-single .chosen-single abbr,
+  .chosen-container-single .chosen-single div b,
+  .chosen-container-single .chosen-search input[type="text"],
+  .chosen-container-multi .chosen-choices .search-choice .search-choice-close,
+  .chosen-container .chosen-results-scroll-down span,
+  .chosen-container .chosen-results-scroll-up span {
+    background-image: @chosen-sprite-retina !important;
+    background-size: 52px 37px !important;
+    background-repeat: no-repeat !important;
+  }
+}
+/* @end */

src/less/zui.less

@@ -62,6 +62,7 @@
 // --------------------------------------------------
 
 @import "controls/font-awesome.less";
+@import "modules/choosen.less";
 
 //
 // VIEWS