Angular TreeList - columns.buttons

Allows you to customize buttons in the editing column or create a custom command column. Applies only if the column's type is "buttons".

Type:

Array<String | Column Button>

Accepted Values: 'add' | 'cancel' | 'delete' | 'edit' | 'save' | 'undelete'

See Also

cssClass

Specifies a CSS class to be applied to the button.

Type:

String

hint

Specifies the text for the hint that appears when the button is hovered over or long-pressed.

Type:

String

icon

Specifies the button's icon.

Type:

String

This option accepts one of the following:

See Also

name

The name used to identify a built-in button.

Type:

String

Accepted Values: 'add' | 'cancel' | 'delete' | 'edit' | 'save' | 'undelete'

To configure a built-in button, assign its name to this option. The other options in the object configure the button. For example, the following code adds a custom CSS class to the Save button:

jQuery
JavaScript
$(function () {
    $("#treeListContainer").dxTreeList({
        // ...
        columns: [{
            type: "buttons",
            buttons: [{
                name: "save",
                cssClass: "my-class"
            }]
        }]
    });
});
Angular
HTML
TypeScript
<dx-tree-list ... >
    <dxi-column type="buttons">
        <dxi-button
            name="save"
            cssClass="my-class">
        </dxi-button>
    </dxi-column>
</dx-tree-list>
import { DxTreeListModule } from "devextreme-angular";
// ...
export class AppComponent {
    // ...
}
@NgModule({
    imports: [
        // ...
        DxTreeListModule
    ],
    // ...
})

onClick

A function that is executed when the button is clicked or tapped.

Type:

Function

|

String

Function parameters:
e:

Object

Information about the event that caused the function's execution.

Object structure:
Name Type Description
component

TreeList

The widget's instance.
element

HTMLElement | jQuery

The widget's container. It is an HTML Element or a jQuery Element when you use jQuery.
model

Object

The model data. Available only if you use Knockout.
event

Event (jQuery or EventObject)

The event that caused the function's execution. It is a dxEvent or a jQuery.Event when you use jQuery.
row

TreeList Row

The properties of the button's row.
column

TreeList Column

The properties of the button's column.

template

Specifies a custom button template.

Type:

template

Template Data:
Name Type Description
component

TreeList

The widget's instance.
data

Object

The data of the cell's row.
key any

The row's key.
columnIndex

Number

The index of the cell's column.
Refer to Column and Row Indexes for more information.
column

TreeList Column

The column's properties.
rowIndex

Number

The index of the cell's row. Begins with 0 on each page. Group rows are included.
Refer to Column and Row Indexes for more information.
rowType

String

The row's type.
row

TreeList Row

The row's properties.

See Also

text

Specifies the button's text. Applies only if the button's icon is not specified.

Type:

String

visible

Specifies the button's visibility.

Type:

Boolean

|

Function

Function parameters:
options:

Object

Information about the row and column that contain the button.

Object structure:
Name Type Description
component

TreeList

The widget's instance.
row

TreeList Row

The row's properties.
column

TreeList Column

The column's properties.
Return Value:

Boolean

true if the button should be visible; otherwise, false.

Default Value: true

Use the function when you need to show or hide the button for specific rows. For example, the widget lists online orders and allows users to edit them. A Cancel button should allow users to cancel their orders. However, completed orders should not be canceled. The visible function in this case may look as follows:

jQuery
JavaScript
$(function () {
    $("#treeListContainer").dxTreeList({
        // ...
        columns: [{
            type: "buttons",
            buttons: [{
                text: "Cancel",
                visible: function (e) {
                    return !e.row.isEditing && !e.row.data.isCompleted;
                }
            }]
        }]
    });
});
Angular
HTML
TypeScript
<dx-tree-list ... >
    <dxi-column type="buttons">
        <dxi-button
            text="Cancel"
            [visible]="isCancelButtonVisible">
        </dxi-button>
    </dxi-column>
</dx-tree-list>
import { DxTreeListModule } from "devextreme-angular";
// ...
export class AppComponent {
    isCancelButtonVisible (e) {
        return !e.row.isEditing && !e.row.data.isCompleted;
    }
}
@NgModule({
    imports: [
        // ...
        DxTreeListModule
    ],
    // ...
})