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The Grid enables you to style its columns, rows, and cells.
To style the columns of the Kendo UI Grid for Angular, use the options for:
Customizing Column Styles
You can add a custom CSS class or style to the header, footer, and cell elements of the current column by using the following options:
- —Specifies the class to be added to the header cell.
- —Specifies the styles to be added to the header cell.
- —Specifies the class to be added to the cell.
- —Specifies the styles to be added to the cell.
- —Specifies the class to be added to the footer cell.
- —Specifies the styles to be added to the footer cell.
- —Specifies the class to be added to the filter row cell.
- —Specifies the styles to be added to the filter row cell.
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Highlighting Specific Columns
To highlight a specific column of the Grid, use the class input of the . For an example, refer to the API documentation of the ColumnComponent.
To style the rows of the Grid, utilize the function. For an example, refer to the code sample on adding a background color.
To style specific cells of the Grid, use the options for:
Styling Cells on the Fly
To compute the styles for a cell on the fly:
- Use the directive.
- Override the cell padding.
- Sanitize the CSS values.
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Highlighting Specific Row Cells
To highlight a specific row cell of the Grid, combine the rowClass and the ColumnComponent.class options. As a result, the styles you want to use will apply only when both settings are active.
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You can specify what header renderer to use at the column definition level. If not specified, the grid's default header rendering components will be used. If you just want to make simple layout changes to the default header take a look at Header Templates.
There are two types of header components:
- Header Component: For rendering the normal column headers. Configured for columns.
- Header Group Component: For rendering column groups. Configured for column groups.
Below is a simple example of header component:
The example below shows a header component in action. The following can be observed in the demo:
- Column moving and resizing is working without requiring any logic in the header component.
- Some columns have suppressMenu=true, so the header component doesn't show the menu.
- Some columns have sortable=false, so the header component doesn't add sorting logic.
- The header component uses additional parameters to allowing configuring the menu icon.
Header components work similar to other component types in AG Grid in which they should implement the following interface:
The method takes a params object with the items listed below. If the user provides params via the attribute, these will be additionally added to the params object, overriding items of the same name if a name clash exists.
Properties available on the interface.
The column the header is for.
The name to display for the column. If the column is using a headerValueGetter, the displayName will take this into account.
Whether sorting is enabled for the column. Only put sort logic into your header if this is true.
Whether menu is enabled for the column. Only display a menu button in your header if this is true.
Callback to request the grid to show the column menu. Pass in the html element of the column menu to have the grid position the menu over the button.
Callback to progress the sort for this column. The grid will decide the next sort direction eg ascending, descending or 'no sort'. Pass if you want to do a multi sort (eg user has Shift held down when they click).
Callback to set the sort for this column. Pass the sort direction to use ignoring the current sort eg one of 'asc', 'desc' or null (for no sort). Pass if you want to do a multi sort (eg user has Shift held down when they click)
The header the grid provides. The custom header component is a child of the grid provided header. The grid's header component is what contains the grid managed functionality such as resizing, keyboard navigation etc. This is provided should you want to make changes to this cell, eg add ARIA tags, or add keyboard event listener (as focus goes here when navigating to the header).
The context as provided on
You specify the Header Component, as well Header Group Components, in the column definition (or you can set in the default column definition to impact all columns).
If you're not familiar with registering Custom Components for use within the Grid please refer the the Registering Components documentation first.
In the definitions below we're registering both a column (for the column), as well as a (for the grouped column).
For more information on declaring columns please refer to the Column Definition Docs, and for grouped columns please refer to the Grouped Column Definition Docs.
Grid vs Your Responsibilities
A Header Component allows customising the inside part of the header. The component is wrapped inside a header cell so that the grid can take care of some complex logic that you should not be worried about, eg the resizing and moving of columns. The HTML of the header cell is similar to the following:
The grid is always responsible for the following:
- Resizing: When enabled, the grid will put an invisible widget to be grabbed by the mouse for resizing.
- Checkbox Selection: When enabled, the grid puts a checkbox for 'select all' in the header.
The header component (your bit) will be responsible for the following:
- Sorting: You will need to process user interaction for sorting. The default grid component sorts when the user clicks the header with the mouse. You may also need to display icons as the sort state of the column changes.
- Filtering: You do not filter via the column (you filter from inside the menu), however you may need to display icons as the filter state of the column changes.
- Menu: If you want the user to be able to open the column menu, you will need to manage this user interaction. The default grid component provides a button for the user to click to show the menu.
- Anything Else: Whatever you want, you are probably creating a custom header to add your own functionality in.
How you interact with the user for sorting (eg do you listen for mouse clicks?) is up to you. The grid helps you by providing column state and events for getting and setting the sort.
After the user requests a sort, you should call ONE of the following:
- This is the simplest. Call it to progress the sort on the column to the next stage. Using this uses the grid logic for working out what the next sort stage is (eg 'descending' normally follows 'ascending').
- Use this to set to sort to a specific state. Use this if you don't want to use the grids logic for working out the next sort state.
To know when a column's sort state has change (eg when to update your icons), you should listen for event on the column.
The header doesn't normally initiate filtering. If it does, use the standard grid API to set the filter. The header will typically display icons when the filter is applied. To know when to show a filter icon, listen to the column for filterChanged events.
How you get the user to ask for the column menu is up to you. When you want to display the menu, call the callback. The callback takes the HTML element for the button so that it can place the menu over the button (so the menu appears to drop down from the button).
The method gets called when the application updates the Column Definitions. For example the application could set a attribute and then set the Column Definitions again. In this instance, the Header Component should update the displayed header name.
It is the responsibility of the Header Component to inspect the Column Definition for relevant changes and updated if needed. If the refresh was successful then should be returned. If the refresh was no successful then should be returned. If is returned, then the grid will destroy and recreate the component. This pattern is consistent with the method of Cell Renderers.
On top of the parameters provided by the grid, you can also provide your own parameters. This is useful if you want to 'configure' your header component. For example, you might have a header component for formatting currency but that needs the currency symbol.
Grid vs Your Responsibilities
As with normal headers, AG Grid will always handle resize and column moving. The grid does not handle selection checkbox as this feature is only at the non-grouped header level. The header group component (your bit) is responsible for the following:
- Group Open / Close: If the group can expand (one or more columns visibility depends on the open / closed state of the group) then your header group component should handle the interaction with the user for opening and closing groups.
- Anything Else: Whatever you want, it's your component!
The header group component interface is almost identical to the above header component. The only difference is the object passed the instantiated Vue component.
The params passed to are as follows:
Properties available on the interface.
The column group the header is for.
The text label to render. If the column is using a headerValueGetter, the displayName will take this into account.
Opens / closes the column group
The context as provided on
Opening / Closing Groups
Not all column groups can open and close, so you should display open / close features accordingly. To check if a column group should have open / close functionality, check the method on the column group.
To check if a column group is open or closed, check the method on the column group.
To open / close a column group, use the method.
To know if a group is expanded or collapsed, listen for the event on the column group.
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Each column has a header at the top that typically displays the column name and has access to column features, such as sorting, filtering and a column menu. This page explains how you can manage the headers.
These properties can be used to change the different heights used in the headers.
The height in pixels for the row containing the column label header. Default:
The height in pixels for the rows containing header column groups. If not specified, it uses .
The height in pixels for the row containing the floating filters. Default:
The height in pixels for the row containing the columns when in pivot mode. If not specified, it uses .
The height in pixels for the row containing header column groups when in pivot mode. If not specified, it uses .
All these properties also have setter methods that can be called from the API and will change the header heights dynamically.
Sets the height in pixels for the row containing the column label header.
Sets the height in pixels for the rows containing header column groups.
Sets the height in pixels for the row containing the floating filters.
Sets the height in pixels for the row containing the columns when in pivot mode.
Sets the height in pixels for the row containing header column groups when in pivot mode.
By default, the text label for the header is display horizontally, i.e. as normal readable text. To display the text in another orientation you have to provide your own CSS to change the orientation and also provide the adequate header heights using the appropriate grid property.
Example: Header Height and Text Orientation
The following example shows how you can provide a unique look and feel to the headers. Note that:
- The header heights have all been changed via grid options:
- The grouped column header has a specific style applied to it to make it bigger. Note that the style is slightly different depending if pivoting or not:
- The column labels have CSS applied to them so they are displayed vertically.
- The floating filters are using a much bigger area and the font used is bigger and bolder.
- The styling of the column labels have also been tweaked depending if pivoting or not.
As you can see in the example below, if you change any of the header heights, this change will be reflected automatically. Note how if the value is set to , it might reuse other values. To see all the interactions check the properties descriptions at the top of the page.
Header templates are meant to be used for simple UI customisation, if you need to have more control over the header check how to create your own Header Components.
You can provide a tooltip to the header using or .
The example below shows header tooltips. Note the following:
- The first two columns (Athlete and Age) have no header tooltip.
- The remaining columns (Country through to Total) have a header tooltip set.
You can provide a header template used by the default header component for simple layout changes. If you want to change the behaviour, please look at creating your own Custom Header Component. The template for the default header is specified in .
This is the default template used in AG Grid:
When you provide your own template, everything should work as expected as long as you re-use the same .
|The container where there is going to be an onClick mouse listener to trigger the sort.|
|The text displayed on the column.|
|The container with the icon that will appear if the user filters this column.|
|In case of sorting my multiple columns, this shows the index that represents the position of this column in the order.|
|In case of sorting ascending the data in the column, this shows the associated icon.|
|In case of sorting descending the data in the column, this shows the descending icon.|
|In case of no sort being applied, this shows the associated icon. Note this icon by default is empty.|
The ref parameters are used by the grid to identify elements to add functionality to. If you leave an element out of your template, the functionality will not be added. For example if you do not specify then the column will not react to click events for sorting.
Templates are not meant to let you configure icons. If you are looking to change the icons, check our icon docs.
In the following example you can see how we are reusing the default grid template to change the layout of the elements.
Note that specifying your own templates is compatible with other configurations:
- is specified in: Athlete, Country, Date and Bronze columns
- is specified in: Age, Year, Sport, Silver and Total columns
- Gold is the only column that doesn't have or
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Header style grid ag
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