Angular TreeList Styling Cells

The TreeList enables you to customize the appearance of the cells and change their default layout based on some conditions.

To style specific cells of the TreeList, you can:

• Style cells on the fly
• Set the background for specific row cells

Styling Cells on the Fly

You can apply specific styling to the cells dynamically.

To compute the styles for a cell on the fly:

1. Define the CellTemplateDirective for the corresponding column.
2. Apply a custom background color to the whole cell:
   1. Wrap the cell value and set the padding for the wrapper element.

      Copy Code<ng-template kendoTreeListCellTemplate let-dataItem>
          <span style="display: block; padding: 8px 12px;"
              [style.backgroundColor]="colorType(dataItem.type)">
              {{ dataItem.type }}
          </span>
      </ng-template>

   2. Override the default cell padding of the TreeList through CSS code.

      Copy Code.k-treelist .no-padding {
          padding: 0;
      }

3. Sanitize the CSS values in the background color function.

   Copy Codepublic colorType(type: string): SafeStyle {
       ...
       return this.sanitizer.bypassSecurityTrustStyle(myColor);
   }

The following example demonstrates how to style the cell background color by using CellTemplateDirective.

Highlighting Specific Row Cells

To highlight a specific row cell of the TreeList, combine the rowClass and the component class option of the ColumnComponent. As a result, the styles you want to use will apply only when both settings are active.

The following example demonstrates how to apply a background color to specific cells using by the rowClass function.

Suggested Links

• ColumnComponent
• API Reference of the TreeListComponent
• API Index of the TreeList
• Creating Custom Styles with ThemeBuilder