Angular Data GridTooltip Component
Tooltip components allow you to add your own Tooltips to the grid's column headers and cells. Use these when the provided tooltip component or the Default Browser Tooltip do not meet your requirements.
The example below demonstrates how to provide custom tooltips to the grid. Notice the following:
- The Custom Tooltip Component is supplied by name via
colDef.tooltipComponent. - The Custom Tooltip Parameters (for tooltip background color) are supplied using
colDef.tooltipComponentParams. - Tooltips are displayed instantly by setting
tooltipShowDelayto0. - Tooltips hide in 2000ms by setting
tooltipHideDelayto2000. - Tooltips will be shown for the
athleteandcountrycolumns
Implementing a Tooltip Component
Implement this interface to create a tooltip component.
interface ITooltipAngularComp {
// The agInit(params) method is called on the tooltip component once.
// See below for details on the parameters.
agInit(params: ITooltipParams): void;
}
The agInit(params) method takes a params object with the items listed below:
Properties available on the ITooltipParams<TData = any, TValue = any, TContext = any> interface.
locationTypeTooltipLocation | What part of the application is showing the tooltip, e.g. 'cell', 'header', 'menuItem' etc |
valueTypeTValue | null | The value to be rendered by the tooltip. |
value | The formatted value to be rendered by the tooltip. |
col | Column / ColumnGroup definition. |
column | Column / ColumnGroup |
row | The index of the row containing the cell rendering the tooltip. |
nodeTypeIRowNode | The row node. |
dataTypeTData | Data for the row node in question. |
hide | A callback function that hides the tooltip |
apiTypeGridApi | The grid api. |
contextTypeTContext | Application context as set on gridOptions.context. |
Registering Custom Tooltip Components
See Registering Custom Components for details on registering and using custom tooltip components.
Header Tooltip with Custom Tooltip
When we want to display a header tooltip, we set the headerTooltip config as a string, and that string will be displayed as the tooltip. However, when working with custom tooltips we set colDef.tooltipComponent to assign the column's tooltip component and the headerTooltip value will passed to the params object.
If headerTooltip is not present, the tooltip will not be rendered.
The example below shows how to set a custom tooltip to a header and to a grouped header. Note the following:
- The column Athlete Col 1 does not have a
tooltipComponentso it will render the value set in itsheaderTooltipconfig. - The column Athlete Col 2 uses
tooltipComponentso the the value inheaderTooltipis passed to the tooltipComponentparamsto be used. - The column group Athletes also uses
tooltipComponent. - The
tooltipComponentdetects that it's being rendered by a header because theparamsobject does not contain arowIndexvalue.
Interactive Custom Tooltips
The example below enables tooltip interaction with custom tooltips. Note following:
- Tooltip is enabled for the Athlete and Country columns.
- Tooltips will not disappear while being hovered.
- The custom tooltip displays a text input and a Submit button which when clicked, updates the value of the
AthleteColumn cell in the hovered row and then closes itself by callinghideTooltipCallback().