Configuration

An object defining configuration options for the Popover widget.

animation

Configures widget visibility animations. This object contains two fields: show and hide.

Type:

Object

Default Value: { show: { type: 'fade', from: 0, to: 1 }, hide: { type: 'fade', to: 0 } }

Show Example:
AngularJS
Knockout
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buttons

Deprecated

Use the toolbarItems option instead.

Specifies items displayed on the top or bottom toolbar of the popup window.

Type:

Array<Object>

closeOnBackButton

A Boolean value specifying whether or not the widget is closed if a user presses the Back hardware button.

Type:

Boolean

Default Value: true

closeOnOutsideClick

A Boolean value specifying whether or not the widget is closed if a user clicks outside of the popover window and outside the target element.

Type:

Boolean

|

function

Function parameters:
event:

Event (jQuery or dxEvent)

The event that caused widget closing. It is a dxEvent or a jQuery.Event when you use jQuery.

Return Value:

Boolean

true if the widget should be closed; otherwise false.

Default Value: true

The function passed to this option enables you to specify a custom condition for widget closing. For instance, you can prevent closing until a user clicks a certain element.

JavaScript
var widgetOptions = {
    // ...
    closeOnOutsideClick: function(e) {
        return e.target === $("#someElement").get()[0];
    }
}

contentTemplate

Specifies a custom template for the widget content.

Type:

template

Function parameters:
contentElement:

Element (jQuery or HTML)

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

Return Value:

String

|

DOM Node

|

jQuery

A template name or container.

Default Value: 'content'
Show Example:
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deferRendering

Specifies whether widget content is rendered when the widget is shown or when rendering the widget.

Type:

Boolean

Default Value: true

If this option is set to true, widget content is rendered when showing the widget. Otherwise, widget content is rendered when rendering the widget.

disabled

Specifies whether the widget responds to user interaction.

Type:

Boolean

Default Value: false

elementAttr

Specifies the attributes to be attached to the widget's root element.

Type:

Object

Default Value: {}

You can configure this option in an ASP.NET MVC Control as follows:

Razor C#
Razor VB
@(Html.DevExtreme().WidgetName()
    .ElementAttr("class", "class-name")
    // ===== or =====
    .ElementAttr(new {
        @id = "elementId",
        @class = "class-name"
    })
    // ===== or =====
    .ElementAttr(new Dictionary<string, object>() {
        { "id", "elementId" },
        { "class", "class-name" }
    })

)
@(Html.DevExtreme().WidgetName() _
    .ElementAttr("class", "class-name")
    ' ===== or =====
    .ElementAttr(New With {
        .id = "elementId",
        .class = "class-name"
    })
    ' ===== or =====
    .ElementAttr(New Dictionary(Of String, Object) From {
        { "id", "elementId" },
        { "class", "class-name" }
    })
)

height

Specifies the widget's height.

Type:

Number

|

String

|

function

Return Value:

Number

|

String

The widget height.

Default Value: 'auto'

This option accepts a value of one of the following types:

  • Number
    The height in pixels.

  • String
    A CSS-accepted measurement of height. For example, "55px", "80%", "auto", "inherit".

  • Function
    A function returning either of the above. For example:

    JavaScript
    height: function() {
        return window.innerHeight / 1.5;
    }

hideEvent

Specifies options of popover hiding.

Type:

Object

|

String

Default Value: undefined

If you assign only a string that specifies event names on which the widget is hidden, the widget will not apply any delay.

JavaScript
hideEvent: 'dxhoverend'

hint

Specifies text for a hint that appears when a user pauses on the widget.

Type:

String

Default Value: undefined

hoverStateEnabled

Specifies whether the widget changes its state when a user pauses on it.

Type:

Boolean

Default Value: false

maxHeight

Specifies the maximum height the widget can reach while resizing.

Type:

Number

|

String

|

function

Return Value:

Number

|

String

The maximum height.

Default Value: null

This option accepts a value of one of the following types:

  • Number
    The height in pixels.

  • String
    A CSS-accepted measurement of height. For example, "55px", "80%", "auto", "inherit".

  • Function
    A function returning either of the above. For example:

    JavaScript
    height: function() {
        return window.innerHeight / 1.5;
    }

maxWidth

Specifies the maximum width the widget can reach while resizing.

Type:

Number

|

String

|

function

Return Value:

Number

|

String

The maximum width.

Default Value: null

This option accepts a value of one of the following types:

  • Number
    The width in pixels.

  • String
    A CSS-accepted measurement of width. For example, "55px", "80%", "auto", "inherit".

  • Function
    A function returning either of the above. For example:

    JavaScript
    width: function() {
        return window.innerWidth / 1.5;
    }

minHeight

Specifies the minimum height the widget can reach while resizing.

Type:

Number

|

String

|

function

Return Value:

Number

|

String

The minimum height.

Default Value: null

This option accepts a value of one of the following types:

  • Number
    The height in pixels.

  • String
    A CSS-accepted measurement of height. For example, "55px", "80%", "auto", "inherit".

  • Function
    A function returning either of the above. For example:

    JavaScript
    height: function() {
        return window.innerHeight / 1.5;
    }

minWidth

Specifies the minimum width the widget can reach while resizing.

Type:

Number

|

String

|

function

Return Value:

Number

|

String

The minimum width.

Default Value: null

This option accepts a value of one of the following types:

  • Number
    The width in pixels.

  • String
    A CSS-accepted measurement of width. For example, "55px", "80%", "auto", "inherit".

  • Function
    A function returning either of the above. For example:

    JavaScript
    width: function() {
        return window.innerWidth / 1.5;
    }

onContentReady

A handler for the contentReady event. Executed when the widget's content is ready. This handler may be executed multiple times during the widget's lifetime depending on the number of times its content changes.

Type:

function

Function parameters:
e:

Object

Information about the event.

Object structure:
component:

Object

The widget's instance.

element:

Element (jQuery or HTML)

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

model:

Object

The model data. Available only when using Knockout.

Default Value: null

onDisposing

A handler for the disposing event. Executed when the widget is removed from the DOM using the remove(), empty(), or html() jQuery methods only.

Type:

function

Function parameters:
e:

Object

Information about the event.

Object structure:
component:

Object

The widget's instance.

element:

Element (jQuery or HTML)

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.

Default Value: null

onHidden

A handler for the hidden event.

Type:

function

Function parameters:
e:

Object

Information about the event.

Object structure:
component:

Object

The widget's instance.

element:

Element (jQuery or HTML)

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 Knockout is used.

Default Value: null

Assign a function to perform a custom action after the widget is hidden.

Show Example:
AngularJS
Knockout
jQuery

onHiding

A handler for the hiding event.

Type:

function

Function parameters:
e:

Object

Information about the event.

Object structure:
component:

Object

The widget's instance.

element:

Element (jQuery or HTML)

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 Knockout is used.

cancel:

Boolean

Allows you to cancel overlay hiding.

Default Value: null

Assign a function to perform a custom action before hiding the widget.

Show Example:
AngularJS
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onInitialized

A handler for the initialized event. Executed only once, after the widget is initialized.

Type:

function

Function parameters:
e:

Object

Information about the event.

Object structure:
component:

Object

The widget's instance.

element:

Element (jQuery or HTML)

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

Default Value: null

You cannot access widget elements in this handler because it is executed before they are ready. Use the onContentReady handler instead.

onOptionChanged

A handler for the optionChanged event. Executed after an option of the widget is changed.

Type:

function

Function parameters:
e:

Object

Information about the event.

Object structure:
component:

Object

The widget's instance.

name:

String

The option's short name.

fullName:

String

The option's full name.

value: any

The option's new value.

element:

Element (jQuery or HTML)

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.

Default Value: null

onShowing

A handler for the showing event.

Type:

function

Function parameters:
e:

Object

Information about the event.

Object structure:
component:

Object

The widget's instance.

element:

Element (jQuery or HTML)

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 Knockout is used.

Default Value: null

Assign a function to perform a custom action before showing the widget.

Show Example:
AngularJS
Knockout
jQuery

onShown

A handler for the shown event.

Type:

function

Function parameters:
e:

Object

Information about the event.

Object structure:
component:

Object

The widget's instance.

element:

Element (jQuery or HTML)

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 Knockout is used.

Default Value: null

Assign a function to perform a custom action after the widget is shown.

Show Example:
AngularJS
Knockout
jQuery

onTitleRendered

A handler for the titleRendered event.

Type:

function

Function parameters:
e:

Object

Information about the event.

Object structure:
component:

Object

The widget's instance.

element:

Element (jQuery or HTML)

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 Knockout is used.

titleElement:

Element (jQuery or HTML)

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

Default Value: null

Assign a function to perform a custom action after a collection item title is rendered.

position

An object defining widget positioning options.

Default Value: 'bottom'
Accepted Values: 'bottom' | 'left' | 'right' | 'top'

Besides the position configuration object, the option can take on the following string values, which are shortcuts for the corresponding position configuration.

  • 'top' - places the popover over the target element
  • 'bottom' - places the popover under the target element
  • 'left' - places the popover to the left of the target element
  • 'right' - places the popover to the right of the target element
NOTE
To specify the element against which the widget will be positioned, use the target option instead of the of field of the position object. If both target and of are specified, target will be used.
Show Example:
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rtlEnabled

Switches the widget to a right-to-left representation.

Type:

Boolean

Default Value: false

When this option is set to true, the widget text flows from right to left, and the layout of elements is reversed. To switch the entire application/site to the right-to-left representation, assign true to the rtlEnabled field of the object passed to the DevExpress.config(config) method.

JavaScript
DevExpress.config({
    rtlEnabled: true
});
See Also

shading

A Boolean value specifying whether or not the main screen is inactive while the widget is active.

Type:

Boolean

Default Value: false

Show Example:
AngularJS
Knockout
jQuery

shadingColor

Specifies the shading color.

Type:

String

Default Value: ''

This option makes sense only if the shading option is set to true.

showCloseButton

Specifies whether or not the widget displays the Close button.

Type:

Boolean

Default Value: false, true (desktop)
NOTE
The option makes sense only if the showTitle option is set to true.

showEvent

Specifies options for displaying the widget.

Type:

Object

|

String

Default Value: undefined

If you assign only a string that specifies event names on which the widget is shown, the widget will not apply any delay.

JavaScript
showEvent: 'dxclick'

showTitle

A Boolean value specifying whether or not to display the title in the overlay window.

Type:

Boolean

Default Value: false

target

The target element associated with a popover.

Type:

String

|

DOM Node

|

jQuery

This option accepts one of the following values.

  • A CSS selector, or a jQuery selector if you use jQuery

    target: '#targetElement';
  • A jQuery wrapper

    target: $('#targetElement');
  • A DOM element

    target: document.getElementById('#targetElement');

To align the Popover against this element, use the position option.

Show Example:
AngularJS
Knockout
jQuery

title

The title in the overlay window.

Type:

String

Default Value: ''
NOTE
If the title option is specified, the titleTemplate option value is ignored.

titleTemplate

Specifies a custom template for the widget title. Does not apply if the title is defined.

Type:

template

Function parameters:
titleElement:

Element (jQuery or HTML)

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

Return Value:

String

|

DOM Node

|

jQuery

A template name or container.

Default Value: 'title'

toolbarItems

Specifies items displayed on the top or bottom toolbar of the popup window.

Type:

Array<Object>

visible

A Boolean value specifying whether or not the widget is visible.

Type:

Boolean

Default Value: false

You can show and hide the widget by changing the value of an observable variable passed to this option.

Show Example:
AngularJS
Knockout
jQuery

width

Specifies the widget's width.

Type:

Number

|

String

|

function

Return Value:

Number

|

String

The widget's width.

Default Value: 'auto'

This option accepts a value of one of the following types:

  • Number
    The width in pixels.

  • String
    A CSS-accepted measurement of width. For example, "55px", "80%", "auto", "inherit".

  • Function
    A function returning either of the above. For example:

    JavaScript
    width: function() {
        return window.innerWidth / 1.5;
    }