Implements detail rows for FlexGrid controls.
To add detail rows to a FlexGrid control, create an instance of a FlexGridDetailProvider and set the createDetailCell property to a function that creates elements to be displayed in the detail cells.
For example:
```typescript import { FlexGrid } from '@mescius/wijmo.grid'; import { FlexGridDetailProvider } from '@mescius/wijmo.grid.detail';
// create FlexGrid to show categories let gridCat = new FlexGrid('#gridCat', { itemsSource: getCategories(); });
// add detail rows showing products in each category let detailProvider = new FlexGridDetailProvider(gridCat, { createDetailCell: (row) => { let cell = document.createElement('div'); new FlexGrid(cell, { itemsSource: getProducts(row.dataItem.CategoryID) }); return cell; } }); ```
The FlexGridDetailProvider provides a detailVisibilityMode property that determines when the detail rows should be displayed.
The default value for this property is **ExpandSingle**, which adds collapse/expand icons to the row headers.
The example below shows how you can use a FlexGridDetailProvider to add different types of detail to the rows in a FlexGrid:
{@sample Grid/Rows/RowDetail/Overview/purejs Example}
constructor(grid: FlexGrid, options?: any): FlexGridDetailProvider
Initializes a new instance of the FlexGridDetailProvider class.
Initialization options for the new FlexGridDetailProvider.
Gets or sets the callback function that creates detail cells.
The callback function takes a Row as a parameter and returns an HTML element representing the row details. For example:
```typescript // create detail cells for a given row dp.createDetailCell = (row) => { let cell = document.createElement('div'); new FlexGrid(cell, { itemsSource: getProducts(row.dataItem.CategoryID), headersVisibility: 'Column' }); return cell; }; ```
Gets or sets a value that determines when row details are displayed.
The default value for this property is **DetailVisibilityMode.ExpandSingle**.
Gets or sets the callback function that disposes of detail cells.
The callback function takes a Row as a parameter and disposes of any resources associated with the detail cell.
This function is optional. Use it in cases where the createDetailCell function allocates resources that are not automatically garbage-collected.
Gets or sets a value that indicates whether to use animation when showing row details.
The default value for this property is **false**.
Gets or sets the action to perform when the ENTER key is pressed.
The default setting for this property is None, which lets the grid handle the key. The other option is ToggleDetail, which handles the Enter key to toggle the display of the row details.
Gets or sets the maximum height of the detail rows, in pixels.
The default value for this property is **null**, which means there's no upper limit to the detail row height.
Gets or sets the callback function that determines whether a row has details.
The callback function takes a Row as a parameter and returns a boolean value that indicates whether the row has details. For example:
```typescript // remove details from items with odd CategoryID dp.rowHasDetail = (row) => { return row.dataItem.CategoryID % 2 == 0; }; ```
Setting this property to null means all regular data rows (not group rows or new item templates) have details.
getDetailRow(row: any): DetailRow
Gets the detail row associated with a given grid row.
Row or index of the row to investigate.
hideDetail(row?: Row | number): void
Hides the detail row for a given row.
Row or index of the row that will have its details hidden. This parameter is optional. If not provided, all detail rows are hidden.
isDetailAvailable(row: any): boolean
Gets a value that determines if a row has details to show.
Row or index of the row to investigate.
isDetailVisible(row: any): boolean
Gets a value that determines if a row's details are visible.
Row or index of the row to investigate.
showDetail(row: wijmo.grid.Row | number, hideOthers?: boolean): void
Shows the detail row for a given row.
Whether to hide details for all other rows.
