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HTML

              
                
	<div class="demo-description">
		In Tree Grid mode, the Grid web component displays data hierarchies.  Click a column header to sort data against a data column, or change the column's sort order or Filter data through the column's filter menu.
	</div>
    <smart-grid id="grid"></smart-grid>

    <!-- scripts -->  
	<script src="../../scripts/data.js"></script>	
    <script type="module" src="../../source/modules/smart.grid.js"></script> 
	<script type="module" src="index.js"></script>	   		
	

              
            
!

CSS

              
                html, body { padding: 11px; }

smart-grid {
  height: auto;
  width: 100%;
}
              
            
!

JS

              
                Smart('#grid', class {
    get properties() {
        return {
            dataSource: new Smart.DataAdapter(
			{
			    dataSource: [
                    { "EmployeeID": 1, "FirstName": "Nancy", "LastName": "Davolio", "ReportsTo": 2, "Country": "USA", "Title": "Sales Representative", "HireDate": "1992-05-01 00:00:00", "BirthDate": "1948-12-08 00:00:00", "City": "Seattle", "Address": "507 - 20th Ave. E.Apt. 2A" },
                    { "EmployeeID": 2, "FirstName": "Andrew", "LastName": "Fuller", "ReportsTo": null, "Country": "USA", "Title": "Vice President, Sales", "HireDate": "1992-08-14 00:00:00", "BirthDate": "1952-02-19 00:00:00", "City": "Tacoma", "Address": "908 W. Capital Way" },
                    { "EmployeeID": 3, "FirstName": "Janet", "LastName": "Leverling", "ReportsTo": 2, "Country": "USA", "Title": "Sales Representative", "HireDate": "1992-04-01 00:00:00", "BirthDate": "1963-08-30 00:00:00", "City": "Kirkland", "Address": "722 Moss Bay Blvd." },
                    { "EmployeeID": 4, "FirstName": "Margaret", "LastName": "Peacock", "ReportsTo": 2, "Country": "USA", "Title": "Sales Representative", "HireDate": "1993-05-03 00:00:00", "BirthDate": "1937-09-19 00:00:00", "City": "Redmond", "Address": "4110 Old Redmond Rd." },
                    { "EmployeeID": 5, "FirstName": "Steven", "LastName": "Buchanan", "ReportsTo": 2, "Country": "UK", "Title": "Sales Manager", "HireDate": "1993-10-17 00:00:00", "BirthDate": "1955-03-04 00:00:00", "City": "London", "Address": "14 Garrett Hill" },
                    { "EmployeeID": 6, "FirstName": "Michael", "LastName": "Suyama", "ReportsTo": 5, "Country": "UK", "Title": "Sales Representative", "HireDate": "1993-10-17 00:00:00", "BirthDate": "1963-07-02 00:00:00", "City": "London", "Address": "Coventry House Miner Rd." },
                    { "EmployeeID": 7, "FirstName": "Robert", "LastName": "King", "ReportsTo": 5, "Country": "UK", "Title": "Sales Representative", "HireDate": "1994-01-02 00:00:00", "BirthDate": "1960-05-29 00:00:00", "City": "London", "Address": "Edgeham Hollow Winchester Way" },
                    { "EmployeeID": 8, "FirstName": "Laura", "LastName": "Callahan", "ReportsTo": 2, "Country": "USA", "Title": "Inside Sales Coordinator", "HireDate": "1994-03-05 00:00:00", "BirthDate": "1958-01-09 00:00:00", "City": "Seattle", "Address": "4726 - 11th Ave. N.E." },
                    { "EmployeeID": 9, "FirstName": "Anne", "LastName": "Dodsworth", "ReportsTo": 5, "Country": "UK", "Title": "Sales Representative", "HireDate": "1994-11-15 00:00:00", "BirthDate": "1966-01-27 00:00:00", "City": "London", "Address": "7 Houndstooth Rd." }
                ],
                keyDataField: 'EmployeeID',
                parentDataField: 'ReportsTo',
                id: 'EmployeeID',
			    dataFields:
                    [
                        'EmployeeID: number',
                        'ReportsTo: number',
                        'FirstName: string',
                        'LastName: string',
                        'Country: string',
                        'City: string',
                        'Address: string',
                        'Title: string',
                         'HireDate: date',
                        'BirthDate: date'
                    ]
            }),
            sorting: {
                enabled: true
            },
            filtering: {
                enabled: true,
                filterRow: {
                    visible: true
                }
            },
            behavior: { columnResizeMode: 'growAndShrink' },
            onRowInit: function(index, row) {
                if (row.id === 2) {
                    row.expanded = true;
                }
            },
            columns: [
                { label: 'First Name', dataField: 'FirstName', width: 200, filterEditor: {
                        placeholder: 'Enter First Name',
                        condition: 'CONTAINS'
                    }  
                },
                { label: 'Last Name', dataField: 'LastName', width: 200, filterEditor: {
                        placeholder: 'Enter Last Name',
                        condition: 'STARTS_WITH'
                    } 
                },
                { label: 'Title', dataField: 'Title', width: 160, filterEditor: {
                        template: '<smart-input drop-down-button-position="right" placeholder="Enter Product" style="border-radius: 0px; border: none; width: 100%; height:100%"></smart-input',
                        onInit (column, editor){
                            const input = editor.querySelector('smart-input');
                            const productNames =
                                [
                                    'Black Tea', 'Green Tea', 'Caffe Espresso', 'Doubleshot Espresso', 'Caffe Latte', 'White Chocolate Mocha', 'Caramel Latte', 'Caffe Americano', 'Cappuccino', 'Espresso Truffle', 'Espresso con Panna', 'Peppermint Mocha Twist'
                                ];

                            input.dataSource = productNames;
                            input.style.setProperty('--smart-background', 'transparent');

                            input.onkeyup = (event) => {
                                if (event.key === 'a' && event.ctrlKey) {
                                    input.select();
                                }
                            }
                            input.addEventListener('change', () => {
                                if (input.value === '') {
                                    column.filter = '';
                                }
                                else {
                                    column.filter = 'equal "' + input.value.trim() + '"';
                                }
                            });
                        }
                    } 
                },
                { label: 'Birth Date', dataField: 'BirthDate', cellsFormat: 'd', width: 120 },
                { label: 'Hire Date', dataField: 'HireDate', cellsFormat: 'd', width: 120 },
                { label: 'Address', dataField: 'Address', width: 250 },
                { label: 'City', dataField: 'City', width: 120, },
                { label: 'Country', dataField: 'Country' }			
            ]
        }
    }
});


              
            
!
999px

Console