Configuration

An object defining configuration options for the Gallery widget.

See Also

accessKey

Specifies the shortcut key that sets focus on the widget.

Type:

String

Default Value: null

The value of this option will be passed to the accesskey attribute of the HTML element that underlies the widget.

animationDuration

The time, in milliseconds, spent on slide animation.

Type:

Number

Default Value: 400

animationEnabled

Specifies whether or not to animate the displayed item change.

Type:

Boolean

Default Value: true

dataSource

Binds the widget to data.

Default Value: null

If you use DevExtreme ASP.NET MVC Controls, refer to the Data Binding article.

The Gallery works with collections of string values or objects.

Depending on your data source, bind the Gallery to data as follows. If the data source provides objects, also specify the itemTemplate. You can skip this part if the objects contain fields described in the Default Item Template section.

  • Data Array
    Assign the array to the dataSource option.

  • Read-Only Data in JSON Format
    Set the dataSource option to the URL of a JSON file or service that returns JSON data.

  • OData
    Implement an ODataStore.

  • Web API, PHP, MongoDB
    Use one of the following extensions to enable the server to process data according to the protocol DevExtreme widgets use:

    Then, use the createStore method to configure access to the server on the client as shown below. This method is part of DevExtreme.AspNet.Data.

    jQuery
    JavaScript
    $(function() {
        let serviceUrl = "https://url/to/my/service";
        $("#galleryContainer").dxGallery({
            // ...
            dataSource: DevExpress.data.AspNet.createStore({
                key: "ID",
                loadUrl: serviceUrl + "/GetAction",
                insertUrl: serviceUrl + "/InsertAction",
                updateUrl: serviceUrl + "/UpdateAction",
                deleteUrl: serviceUrl + "/DeleteAction"
            })
        })
    });
    Angular
    app.component.ts
    app.component.html
    app.module.ts
    import { Component } from '@angular/core';
    import CustomStore from 'devextreme/data/custom_store';
    import { createStore } from 'devextreme-aspnet-data-nojquery';
    
    @Component({
        selector: 'app-root',
        templateUrl: './app.component.html',
        styleUrls: ['./app.component.css']
    })
    export class AppComponent {
        store: CustomStore;
        constructor() {
            let serviceUrl = "https://url/to/my/service";
            this.store = createStore({
                key: "ID",
                loadUrl: serviceUrl + "/GetAction",
                insertUrl: serviceUrl + "/InsertAction",
                updateUrl: serviceUrl + "/UpdateAction",
                deleteUrl: serviceUrl + "/DeleteAction"
            })
        }
    }
    <dx-gallery ...
        [dataSource]="store">
    </dx-gallery>
    import { BrowserModule } from '@angular/platform-browser';
    import { NgModule } from '@angular/core';
    import { AppComponent } from './app.component';
    
    import { DxGalleryModule } from 'devextreme-angular';
    
    @NgModule({
        declarations: [
            AppComponent
        ],
        imports: [
            BrowserModule,
            DxGalleryModule
        ],
        providers: [],
        bootstrap: [AppComponent]
    })
    export class AppModule { }
    Vue
    App.vue
    <template> 
        <dx-gallery ...
            :data-source="store" />
    </template>
    
    <script>
    import 'devextreme/dist/css/dx.common.css';
    import 'devextreme/dist/css/dx.light.css';
    
    import CustomStore from 'devextreme/data/custom_store';
    import { createStore } from 'devextreme-aspnet-data-nojquery';
    import { DxGallery } from 'devextreme-vue/gallery';
    
    export default {
        components: {
            DxGallery
        },
        data() {
            const serviceUrl = "https://url/to/my/service";
            const store = createStore({
                key: "ID",
                loadUrl: serviceUrl + "/GetAction",
                insertUrl: serviceUrl + "/InsertAction",
                updateUrl: serviceUrl + "/UpdateAction",
                deleteUrl: serviceUrl + "/DeleteAction"
            });
            return {
                store
            }
        }
    }
    </script>
    React
    App.js
    import React from 'react';
    import 'devextreme/dist/css/dx.common.css';
    import 'devextreme/dist/css/dx.light.css';
    
    import CustomStore from 'devextreme/data/custom_store';
    import { createStore } from 'devextreme-aspnet-data-nojquery';
    import Gallery from 'devextreme-react/gallery';
    
    const serviceUrl = "https://url/to/my/service";
    const store = createStore({
        key: "ID",
        loadUrl: serviceUrl + "/GetAction",
        insertUrl: serviceUrl + "/InsertAction",
        updateUrl: serviceUrl + "/UpdateAction",
        deleteUrl: serviceUrl + "/DeleteAction"
    });
    
    class App extends React.Component {
        render() {
            return (
                <Gallery ...
                    dataSource={store} />
            );
        }
    }
    export default App;
  • Any other data source
    Implement a CustomStore.

Regardless of the data source on the input, the Gallery always wraps it in the DataSource object. This object allows you to sort, filter, group, and otherwise shape data. To get its instance, call the getDataSource() method.

NOTE

Please review the following notes about data binding:

  • Do not specify the items option if you specified the dataSource, and vice versa.

  • Data field names should not contain the following characters: ., ,, :, [, and ].

  • DataSource and stores provide methods to process and update data. However, the methods do not allow you to perform particular tasks (for example, replace the entire dataset, reconfigure data access at runtime). For such tasks, create a new array, store, or DataSource and assign it to the dataSource option as shown in the articles about changing options in jQuery, Angular, React, and Vue.

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: {}
jQuery
$(function(){
    $("#galleryContainer").dxGallery({
        // ...
        elementAttr: {
            id: "elementId",
            class: "class-name"
        }
    });
});
Angular
HTML
TypeScript
<dx-gallery ...
    [elementAttr]="{ id: 'elementId', class: 'class-name' }">
</dx-gallery>
import { DxGalleryModule } from "devextreme-angular";
// ...
export class AppComponent {
    // ...
}
@NgModule({
    imports: [
        // ...
        DxGalleryModule
    ],
    // ...
})
ASP.NET MVC Control
Razor C#
Razor VB
@(Html.DevExtreme().Gallery()
    .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().Gallery() _
    .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" }
    })
)

focusStateEnabled

Specifies whether the widget can be focused using keyboard navigation.

Type:

Boolean

Default Value: false, true (desktop)

height

Specifies the widget's height.

Type:

Number

|

String

|

Function

Return Value:

Number

|

String

The widget's height.

Default Value: undefined

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%", "inherit".

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

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

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

indicatorEnabled

A Boolean value specifying whether or not to allow users to switch between items by clicking an indicator.

Type:

Boolean

Default Value: true

initialItemWidth

Specifies the width of an area used to display a single image.

Type:

Number

Default Value: undefined

If this option is defined, the gallery displays as many horizontally arranged images scaled down to initialItemWidth as it can display without cropping them.

If the stretchImages option is set to true, the image sizes can be enlarged to fit the gallery width.

itemHoldTimeout

The time period in milliseconds before the onItemHold event is raised.

Type:

Number

Default Value: 750

items

An array of items displayed by the widget.

Raised Events: optionChanged

If you need to update the widget items, reassign the entire items[] array as shown in the following example:

JavaScript
galleryInstance.option('items', newItems);

As an alternative to items, you can use the dataSource option. It accepts the DataSource object, whose underlying stores provide an API that allows you to update individual items without reassigning the entire item collection.

NOTE
Do not use the items option if you use dataSource, and vice versa.

Particular fields in objects can control the widget's appearance. See Default Templates for more information.

itemTemplate

Specifies a custom template for items.

Type:

template

Function parameters:
itemData:

Object

The item object to be rendered.

itemIndex:

Number

The index of the item to be rendered.

itemElement:

Element (jQuery or HTML)

The item'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: 'item'

loop

A Boolean value specifying whether or not to scroll back to the first item after the last item is swiped.

Type:

Boolean

Default Value: false

onContentReady

A function that is executed when the widget's content is ready and each time the content is changed.

Type:

Function

Function parameters:
e:

Object

Information about the event.

Object structure:
component:

Gallery

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 function that is executed before the widget is disposed of.

Type:

Function

Function parameters:
e:

Object

Information about the event.

Object structure:
component:

Gallery

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

onInitialized

A function used in JavaScript frameworks to save the widget instance.

Type:

Function

Function parameters:
e:

Object

Information about the event.

Object structure:
component:

Gallery

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
See Also

onItemClick

A function that is executed when a collection item is clicked or tapped.

Type:

Function

|

String

Function parameters:
e:

Object

Information about the event.

Object structure:
component:

Gallery

The widget's instance.

element:

Element (jQuery or HTML)

The widget's container.

model:

Object

The model data. Available only if you use Knockout.

itemData:

Object

The clicked item's data.

itemElement:

Element (jQuery or HTML)

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

itemIndex:

Number

The clicked item's index.

jQueryEvent:

jQuery.Event

Use 'event' instead.

The jQuery event that caused the handler execution. Deprecated in favor of the event field.

event:

Event (jQuery or dxEvent)

The event that caused the function to execute. It is a dxEvent or a jQuery.Event when you use jQuery.

Default Value: null

onItemContextMenu

A function that is executed when a collection item is right-clicked or pressed.

Type:

Function

Function parameters:
e:

Object

Information about the event.

Object structure:
component:

Gallery

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.

itemData:

Object

The item's data.

itemElement:

Element (jQuery or HTML)

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

itemIndex:

Number

The item's index.

jQueryEvent:

jQuery.Event

Use 'event' instead.

The jQuery event that caused the handler execution. Deprecated in favor of the event field.

event:

Event (jQuery or dxEvent)

The event that caused the function to execute. It is a dxEvent or a jQuery.Event when you use jQuery.

Default Value: null

onItemHold

A function that is executed when a collection item has been held for a specified period.

Type:

Function

Function parameters:
e:

Object

Information about the event.

Object structure:
component:

Gallery

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.

itemData:

Object

The data of the item being held.

itemElement:

Element (jQuery or HTML)

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

itemIndex:

Number

The item's index.

event:

Event (jQuery or dxEvent)

The event that caused the function to execute. It is a dxEvent or a jQuery.Event when you use jQuery.

Default Value: null

onItemRendered

A function that is executed after a collection item is rendered.

Type:

Function

Function parameters:
e:

Object

Information about the event.

Object structure:
component:

Gallery

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.

itemData:

Object

The current item's data.

itemElement:

Element (jQuery or HTML)

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

itemIndex:

Number

The current item's index.

Default Value: null

onOptionChanged

A function that is executed after a widget option is changed.

Type:

Function

Function parameters:
e:

Object

Information about the event.

Object structure:
component:

Gallery

The widget's instance.

name:

String

The modified option if it belongs to the first level. Otherwise, the first-level option it is nested into.

fullName:

String

The path to the modified option that includes all parent options.

value: any

The modified 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

onSelectionChanged

A function that is executed when a collection item is selected or selection is canceled.

Type:

Function

Function parameters:
e:

Object

Information about the event.

Object structure:
component:

Gallery

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.

addedItems:

Array<any>

The data of the items that have been selected.

removedItems:

Array<any>

The data of the items whose selection has been canceled.

Default Value: null

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

selectedIndex

The index of the currently active gallery item.

Type:

Number

Default Value: 0

selectedItem

The selected item object.

Type:

Object

Default Value: null
Raised Events: selectionChanged

showIndicator

A Boolean value specifying whether or not to display an indicator that points to the selected gallery item.

Type:

Boolean

Default Value: true

showNavButtons

A Boolean value that specifies the availability of the "Forward" and "Back" navigation buttons.

Type:

Boolean

Default Value: false

slideshowDelay

The time interval in milliseconds, after which the gallery switches to the next item.

Type:

Number

Default Value: 0

If the value is set to 0, the slide show is disabled.

stretchImages

Specifies if the widget stretches images to fit the total gallery width.

Type:

Boolean

Default Value: false

If this option is set to true, the widget enlarges images to fit the total gallery width. Otherwise, the widget adds an appropriate margin between images to evenly distribute them along the gallery width.

NOTE
An image element can be enlarged only up to the image's actual size. If the element's size reaches the image's actual size, the widget adds appropriate margins at the sides of the image element.

swipeEnabled

A Boolean value specifying whether or not to allow users to switch between items by swiping.

Type:

Boolean

Default Value: true

tabIndex

Specifies the number of the element when the Tab key is used for navigating.

Type:

Number

Default Value: 0

The value of this option will be passed to the tabindex attribute of the HTML element that underlies the widget.

visible

Specifies whether the widget is visible.

Type:

Boolean

Default Value: true

width

Specifies the widget's width.

Type:

Number

|

String

|

Function

Return Value:

Number

|

String

The widget's width.

Default Value: undefined

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;
    }

wrapAround

Specifies whether or not to display parts of previous and next images along the sides of the current image.

Type:

Boolean

Default Value: false