Gallery View with dynamic icons (knockout JS)

use file names to apply css classes using knockout JS

by Rishi Gautam

HTML

<script src="https://cdnjs.cloudflare.com/ajax/libs/knockout/3.4.2/knockout-debug.js"></script>
<div class='gallery' data-bind="foreach: files">
  <!-- ko if:isImage() -->
  <div class='child' data-bind="text: $data.file"></div>
  <!-- /ko -->

  <!-- ko ifnot:isImage() -->
  <div class='child'>
    <div class='fileIcon'>
      <div class='circle' data-bind="text: $data.file, css: $data.file">
      </div>
    </div>
  </div>
  <!-- /ko -->
</div>

CSS

.doc {
  border-color: blue;
  color: blue;
}
.zip {
  border-color: #f1c30f;
  color: #f1c30f;
}
.xls {
  border-color: green;
  color: green;
}
.pdf {
  border-color: red;
  color: red;
}
.fileIcon {
  background-color: #fff;
  width: 100%;
  height: 100%;
  position: relative;
}
.circle {
  border-style: solid;
  border-width: 5px;
  border-radius: 50px;
  position: absolute;
  width: 50%;
  height: 50%;
  top: 20%;
  left: 20%;
  margin: 0 auto;
  display: inline-block;
  text-align: center;
  line-height: 49px;
}
.gallery {
  background-color: #ccc;
  width: 470px;
  height: 250px;
  padding: 5px 5px 5px 5px;
  overflow-y: scroll;
  overflow-x: hidden;
}
.child {
  width: 100px;
  height: 100px;
  margin: 5px 5px 5px 5px;
  float: left;
  border-style: solid;
  border-width: 1px;
  border-radius: 5px;
}
.child:hover {
  cursor: pointer;
  background-color: #ddd;
}
.selected {
  background-color: #ddd;
}

JavaScript

var model = {
	files: [
  {file: 'pdf', isImage: function() {return false;}}, 
  {file: 'png', isImage: function() {return true;}}, 
  {file: 'pdf', isImage: function() {return false;}},
  {file: 'doc', isImage: function() {return false;}},
  {file: 'xls', isImage: function() {return false;}},
  {file: 'xls', isImage: function() {return false;}},
  {file: 'doc', isImage: function() {return false;}},
  {file: 'zip', isImage: function() {return false;}},
  {file: 'pdf', isImage: function() {return false;}},
  {file: 'jpg', isImage: function() {return true;}}]
};

ko.applyBindings(model);