Description
ListGrid displays a list of objects in a grid, where each row represents one object and each cell in the row represents one property.
Periodical updating ListGrid is possible in the following ways:
- Using the invalidateCache method. This approach updates the data and will show a loading message. However, this API will disrupt the existing view.
- Transparent update by DataSource using the fetchData method. This method updates the data but doesn't show a loading message and won't disrupt the existing view.
A working example is available in the attachment.
Transparent update
For transparent loading of the data the fetchData method should be used.
Update by DataSource
var dataSource = supplyItemListGrid.getDataSource();
var request = {
startRow: 0,
endRow: (supplyItemListGrid.getVisibleRows()[1] + supplyItemListGrid.data.resultSize),
sortBy: supplyItemListGrid.getSort(),
showPrompt: false
};
var selectedRows = supplyItemListGrid.getSelectedState()
var callback = function(dsResponse,data,dsRequest) {
var resultSet = isc.ResultSet.create({
dataSource: supplyItemListGrid.getDataSource(),
initialLength: dsResponse.totalRows,
initialData: dsResponse.data,
sortSpecifiers: supplyItemListGrid.getSort(),
criteria: supplyItemListGrid.getCriteria()
});
supplyItemListGrid.setData(resultSet);
supplyItemListGrid.setSelectedState(selectedRows);
};
dataSource.fetchData(supplyItemListGrid.getCriteria(), callback, request);
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