Configuration

An object defining configuration properties for the Gallery UI component.

See Also

accessKey

Specifies the shortcut key that sets focus on the UI component.

Type:

String

Default Value: null

The value of this property will be passed to the accesskey attribute of the HTML element that underlies the UI component.

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 UI component to data.

If you use DevExtreme ASP.NET MVC Controls, refer to the Bind Controls to Data 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 items section.

  • Data Array
    Assign the array to the dataSource option.

  • Read-Only Data in JSON Format
    Set the dataSource property 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 UI components 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> 
        <DxGallery ...
            :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 perform other data shaping operations. To get its instance, call the getDataSource() method.

NOTE

Review the following notes about data binding:

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

  • Data field names cannot be equal to this and should not contain the following characters: ., :, [, and ].

  • The stores and DataSource have 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 property as shown in the articles about changing properties in jQuery, Angular, React, and Vue.

disabled

Specifies whether the UI component responds to user interaction.

Type:

Boolean

Default Value: false

elementAttr

Specifies the global attributes to be attached to the UI component's container 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
    ],
    // ...
})
Vue
App.vue
<template>
    <DxGallery ...
        :element-attr="galleryAttributes">
    </DxGallery>
</template>

<script>
import DxGallery from 'devextreme-vue/gallery';

export default {
    components: {
        DxGallery
    },
    data() {
        return {
            galleryAttributes: {
                id: 'elementId',
                class: 'class-name'
            }
        }
    }
}
</script>
React
App.js
import React from 'react';

import Gallery from 'devextreme-react/gallery';

class App extends React.Component {
    galleryAttributes = {
        id: 'elementId',
        class: 'class-name'
    }

    render() {
        return (
            <Gallery ...
                elementAttr={this.galleryAttributes}>
            </Gallery>
        );
    }
}
export default App;

focusStateEnabled

Specifies whether the UI component can be focused using keyboard navigation.

Type:

Boolean

Default Value: true (desktop)

height

Specifies the UI component's height.

Type:

Number

|

String

|

Function

Return Value:

Number

|

String

The UI component's height.

Default Value: undefined

This property 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 UI component.

Type:

String

Default Value: undefined

hoverStateEnabled

Specifies whether the UI component 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 property is defined, the gallery displays as many horizontally arranged images scaled down to initialItemWidth as it can display without cropping them.

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

itemComponent

An alias for the itemTemplate property specified in React. Accepts a custom component. Refer to Using a Custom Component for more information.

itemHoldTimeout

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

Type:

Number

Default Value: 750

itemRender

An alias for the itemTemplate property specified in React. Accepts a rendering function. Refer to Using a Rendering Function for more information.

items[]

An array of items displayed by the UI component.

Raised Events: optionChanged

The items array can contain:

  • Strings
  • Objects with fields described in this section
  • Objects with any other fields. In this case, specify the itemTemplate.

If you need to update the UI component 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 property. 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 property if you use dataSource, and vice versa.

itemTemplate

Specifies a custom template for items.

Type:

template

Template Data:

Object

The item object to be rendered.

Default Name: '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

noDataText

The text or HTML markup displayed by the UI component if the item collection is empty.

Type:

String

Default Value: 'No data to display'

onContentReady

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

Type:

Function

Function parameters:
e:

Object

Information about the event.

Object structure:
Name Type Description
component

Gallery

The UI component's instance.

element

HTMLElement or jQuery

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

model

Object

Model data. Available only when using Knockout.

Default Value: null

onDisposing

A function that is executed before the UI component is disposed of.

Type:

Function

Function parameters:
e:

Object

Information about the event.

Object structure:
Name Type Description
component

Gallery

The UI component's instance.

element

HTMLElement or jQuery

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

model

Object

Model data. Available only if you use Knockout.

Default Value: null

onInitialized

A function used in JavaScript frameworks to save the UI component instance.

Type:

Function

Function parameters:
e:

Object

Information about the event.

Object structure:
Name Type Description
component

Gallery

The UI component's instance.

element

HTMLElement or jQuery

The UI component'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:
Name Type Description
component

Gallery

The UI component's instance.

element

HTMLElement or jQuery

The UI component's container.

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.

itemData

Object

The clicked item's data.

itemElement

HTMLElement or jQuery

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

itemIndex

Number

The clicked item's index.

model

Object

Model data. Available only if you use Knockout.

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:
Name Type Description
component

Gallery

The UI component's instance.

element

HTMLElement or jQuery

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

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.

itemData

Object

The item's data.

itemElement

HTMLElement or jQuery

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

itemIndex

Number

The item's index.

model

Object

Model data. Available only if you use Knockout.

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:
Name Type Description
component

Gallery

The UI component's instance.

element

HTMLElement or jQuery

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

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.

itemData

Object

The data of the item being held.

itemElement

HTMLElement or jQuery

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

itemIndex

Number

The item's index.

model

Object

Model data. Available only if you use Knockout.

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:
Name Type Description
component

Gallery

The UI component's instance.

element

HTMLElement or jQuery

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

itemData

Object

The current item's data.

itemElement

HTMLElement or jQuery

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

itemIndex

Number

The current item's index.

model

Object

Model data. Available only if you use Knockout.

Default Value: null

onOptionChanged

A function that is executed after a UI component property is changed.

Type:

Function

Function parameters:
e:

Object

Information about the event.

Object structure:
Name Type Description
component

Gallery

The UI component's instance.

fullName

String

The path to the modified property that includes all parent properties.

name

String

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

value any

The modified property's new value.

element

HTMLElement or jQuery

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

model

Object

Model data. Available only if you use Knockout.

Default Value: null

The following example shows how to subscribe to component property changes:

jQuery
index.js
$(function() {
    $("#galleryContainer").dxGallery({
        // ...
        onOptionChanged: function(e) {
            if(e.name === "changedProperty") {
                // handle the property change here
            }
        }
    });
});
Angular
app.component.html
app.component.ts
app.module.ts
<dx-gallery ...
    (onOptionChanged)="handlePropertyChange($event)"> 
</dx-gallery>
import { Component } from '@angular/core'; 

@Component({ 
    selector: 'app-root', 
    templateUrl: './app.component.html', 
    styleUrls: ['./app.component.css'] 
}) 

export class AppComponent { 
    // ...
    handlePropertyChange(e) {
        if(e.name === "changedProperty") { 
            // handle the property change here
        }
    }
}
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> 
    <DxGallery ...
        @option-changed="handlePropertyChange"
    />            
</template> 

<script> 
import 'devextreme/dist/css/dx.common.css'; 
import 'devextreme/dist/css/dx.light.css'; 
import DxGallery from 'devextreme-vue/gallery'; 

export default { 
    components: { 
        DxGallery
    }, 
    // ...
    methods: { 
        handlePropertyChange: function(e) {
            if(e.name === "changedProperty") {
                // handle the property change here
            }
        }
    } 
} 
</script> 
React
App.js
import React from 'react'; 
import 'devextreme/dist/css/dx.common.css'; 
import 'devextreme/dist/css/dx.light.css'; 

import Gallery from 'devextreme-react/gallery'; 

const handlePropertyChange = (e) => {
    if(e.name === "changedProperty") {
        // handle the property change here
    }
}

export default function App() { 
    return ( 
        <Gallery ...
            onOptionChanged={handlePropertyChange}
        />        
    ); 
} 

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:
Name Type Description
addedItems

Array<any>

The data of the items that have been selected.

component

Gallery

The UI component's instance.

element

HTMLElement or jQuery

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

model

Object

Model data. Available only if you use Knockout.

removedItems

Array<any>

The data of the items whose selection has been canceled.

Default Value: null

rtlEnabled

Switches the UI component to a right-to-left representation.

Type:

Boolean

Default Value: false

When this property is set to true, the UI component 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
Raised Events: selectionChanged

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 UI component stretches images to fit the total gallery width.

Type:

Boolean

Default Value: false

If this property is set to true, the UI component enlarges images to fit the total gallery width. Otherwise, the UI component 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 UI component 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 property will be passed to the tabindex attribute of the HTML element that underlies the UI component.

visible

Specifies whether the UI component is visible.

Type:

Boolean

Default Value: true

width

Specifies the UI component's width.

Type:

Number

|

String

|

Function

Return Value:

Number

|

String

The UI component's width.

Default Value: undefined

This property 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