Customizing the way a cell is displayed can be useful for showcasing different types of data. This example shows how to use cellRenderer to customize the way that value changes are shown.
As seen above, the two Amount columns are using two different animations, animateCellChange and animateSlide,
which are applied to the columns via the cellRenderer property.
For performance consideration, cellRenderer only works when update row value by calling updateItem method.
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<title>Cell Renderer | Features | MESCIUS DataViewsJS JavaScript Demos</title>
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var isMobile = screen.width < 480;
var cols = [
{
id: 'id',
caption: 'ID',
dataField: 'id',
width: isMobile ? 30 : 60,
},
{
id: 'amount',
caption: 'Amount',
dataField: 'amount',
cellRenderer: 'animateCellChange',
width: isMobile ? 60 : 120,
},
{
id: 'amount2',
caption: 'Amount',
dataField: 'amount',
cellRenderer: 'animateSlide',
width: isMobile ? 60 : 120,
},
{
id: 'country',
caption: 'Country',
dataField: 'country',
width: '*',
},
{
id: 'active',
dataField: 'active',
visible: false,
},
];
var dataView = new GC.DataViews.DataView(document.getElementById('grid'), data, cols, new GC.DataViews.GridLayout());
function startTimer(cb) {
var timeout = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 100;
var maxIntervals = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : 10;
var count = _.random(1, maxIntervals);
var tick = function tick() {
if (--count < 1) {
count = _.random(1, maxIntervals);
cb();
}
};
var timer = setInterval(tick, timeout);
return function () {
clearInterval(timer);
};
}
startTimer(function () {
var i = _.random(0, data.length - 1);
var item = _.clone(dataView.data.getItem(i).dataItem);
item.amount = _.random(0, 9999);
dataView.data.updateItem(i, item);
});
var countries = ['US', 'Germany', 'UK', 'Japan', 'Italy', 'Greece'];
var data = [];
for (var i = 0; i < 20; i++) {
data.push({
id: i,
country: countries[i % countries.length],
date: new Date(2019, i % 12, i % 28 + 1),
amount: Math.floor(Math.random() * 10000),
active: i % 4 === 0
});
}
