KB - Wijmo 5 - Grouping And Searching Across Pages

This fiddle demonstrates how to combine Paging, Searching, and Grouping in a FlexGrid.

by Joel Parks

HTML

<link rel="stylesheet" href="http://maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css">
<link rel="stylesheet" href="http://cdn.wijmo.com/5.latest/styles/wijmo.min.css">
<script src="http://cdn.wijmo.com/5.latest/controls/wijmo.min.js"></script>
<script src="http://cdn.wijmo.com/5.latest/controls/wijmo.input.min.js"></script>
<script src="http://cdn.wijmo.com/5.latest/controls/wijmo.grid.min.js"></script>
<script src="http://cdn.wijmo.com/5.latest/controls/wijmo.chart.min.js"></script>
<script src="http://cdn.wijmo.com/5.latest/controls/wijmo.grid.filter.min.js"></script>
<div class="container">

  <h1>
    Grouping and Searching Across Pages
  </h1>

  <div class="input-group">
    <div class="input-group-addon"><span class="glyphicon glyphicon-search"></span></div>    
    <input id="filter" class="form-control" placeholder="Country Filter">
  </div><br />   

  <div id="flexGrid" class="custom-icons" style="font-family:Courier New"></div>
  <div id="pager">
    <button id="btnFirst" class="btn"><span class="wj-glyph-step-backward"></span></button>
    <button id="btnPrev" class="btn"><span class="wj-glyph-left"></span></button>
    &nbsp;&nbsp;&nbsp;<span id="spanCurrent"></span>&nbsp;&nbsp;&nbsp;
    <button id="btnNext" class="btn"><span class="wj-glyph-right"></span></button>
    <button id="btnLast" class="btn"><span class="wj-glyph-step-forward"></span></button>
  </div>
</div>

CSS

.wj-flexgrid {
  max-height: 250px;
  margin-bottom: 12px;
}

.header {
  display: inline-block;
  width: 150px;
  text-align: right;
  font-weight: normal;
}

// Changes the icon for filtering the grid
.custom-icons .wj-glyph-filter {
    background-image:url('http://icons.iconseeker.com/png/fullsize/aspnet/filter-1.png');
    background-repeat: no-repeat;
    background-position: bottom right;
    margin-top: 4px;
    width: 1em; height: 1em;
    border: none;
}
.custom-icons .wj-glyph-filter:after {
    display: none;
}
/* make active filter images 25% larger */
.custom-icons .wj-filter-on .wj-glyph-filter {
    transform: scale(1.25)
}

JavaScript

onload = function() {
  // Creates a vector of strings, and a data variable to hold a list of items
  var countries = 'US,Germany,UK,Japan,Italy,Greece'.split(','),
    data = [];
  for (var i = 0; i < 100; i++) {
    // Creates attributes and assigns values to each of them for each item in the 'data' variable
    data.push({
      id: i,
      country: countries[Math.floor(Math.random() * (5-1) + 1)],
      active: i % 5 != 0,
      downloads: Math.round(Math.random() * 200000),
      sales: Math.random() * 100000,
      expenses: Math.random() * 50000
    });
  }

  // Creates a view for a ListBox and FlexGrid to manipulate the same data
  var gridView = new wijmo.collections.CollectionView(data, {
  		pageSize: 6,
      pageChanged: updateCurrentPage
  });
  
  // update pager status
  gridView.onPageChanged();
  function updateCurrentPage() {
  	var curr = wijmo.format('Page {index:n0} of {cnt:n0}', {
    	index: gridView.pageIndex + 1,
      cnt: gridView.pageCount
    });
  	document.getElementById('spanCurrent').textContent = curr;
  }
  
  // implement pager
  document.getElementById('pager').addEventListener('click', function(e) {
		var btn = wijmo.closest(e.target, 'button');
    var id = btn ? btn.id : '';
  	switch (id) {
    	case 'btnFirst':
				gridView.moveToFirstPage();
        break;
    	case 'btnPrev':
				gridView.moveToPreviousPage();
        break;
    	case 'btnNext':
				gridView.moveToNextPage();
        break;
    	case 'btnLast':
				gridView.moveToLastPage();
        break;
    }
  });

  // Binds the grid to a Wijmo FlexGrid array
  var gridArray = new wijmo.grid.FlexGrid('#flexGrid', {
    // Changes the header of the binded value to what is stored in the 'header' attribute
    // You can leave columns out of the table; the 'Active' column is left out
    autoGenerateColumns: false,
    columns: [{
      binding: "id",
      header: "ID"
    }, {
      binding: "country",
      header: "COUNTRY",
      // StarWidth expands/contracts...