Animations in Blazor Accordion Component

28 Dec 20236 minutes to read

Blazor Accordion supports custom animations for both expand and collapse actions from the provided animation option of the Animation library. The animation property also allows to set Easing, Duration, and various other effects of an individual’s choice.

Default animation is given as SlideDown for expanding the panel using the Expand animation property and SlideUp for collapsing the panel using the Collapse animation property. The animation can be disabled by setting the animation Effect as None.

The sample demonstrates the types of animation that suits Accordion. All the animation effects can be checked here.

@using Syncfusion.Blazor
@using Syncfusion.Blazor.Navigations
@using Syncfusion.Blazor.DropDowns

<div id="container">
    <div id="default" style="padding-bottom:75px;">
        <div class="row">
            <div class="col-xs-6 col-sm-6 col-lg-6 col-md-6">
                <label> Expand Animation </label>
            </div>
            <div class="col-xs-6 col-sm-6 col-lg-6 col-md-6">
                <SfDropDownList TValue="AnimationEffect" DataSource="@AnimationData" TItem="Effect" PopupHeight="150px" Placeholder="Select a animate type" @bind-Value="ExpandEffect">
                    <DropDownListEvents ValueChange="ExpandOption" TValue="AnimationEffect" TItem="Effect"></DropDownListEvents>
                    <DropDownListFieldSettings Value="ID" Text="Text"></DropDownListFieldSettings>
                </SfDropDownList>
            </div>
        </div>
        <div class="row">
            <div class="col-xs-6 col-sm-6 col-lg-6 col-md-6">
                <label> Collapse Animation </label>
            </div>
            <div class="col-xs-6 col-sm-6 col-lg-6 col-md-6">
                <SfDropDownList TValue="AnimationEffect" DataSource="@AnimationData" TItem="Effect" PopupHeight="150px" Placeholder="Select a animate type" @bind-Value="CollapseEffect">
                    <DropDownListEvents ValueChange="CollapseOption" TValue="AnimationEffect" TItem="Effect"></DropDownListEvents>
                    <DropDownListFieldSettings Value="ID" Text="Text"></DropDownListFieldSettings>
                </SfDropDownList>
            </div>
        </div>
    </div>
    <SfAccordion>
        <AccordionAnimationSettings>
            <AccordionAnimationCollapse Effect=@CollapseEffect></AccordionAnimationCollapse>
            <AccordionAnimationExpand Effect=@ExpandEffect></AccordionAnimationExpand>
        </AccordionAnimationSettings>
        <AccordionItems>
            <AccordionItem Header="ASP.NET" Content="Microsoft ASP.NET is a set of technologies in the Microsoft .NET Framework for building Web applications and XML Web services. ASP.NET pages execute on the server and generate markup such as HTML, WML, or XML that is sent to a desktop or mobile browser. ASP.NET pages use a compiled,event-driven programming model that improves performance and enables the separation of application logic and user interface.">
            </AccordionItem>
            <AccordionItem Header="ASP.NET MVC" Content="The Model-View-Controller (MVC) architectural pattern separates an application into three main components: the model, the view, and the controller. The ASP.NET MVC framework provides an alternative to the ASP.NET Web Forms pattern for creating Web applications. The ASP.NET MVC framework is a lightweight, highly testable presentation framework that (as with Web Forms-based applications) is integrated with existing ASP.NET features, such as master pages and membership-based authentication.">
            </AccordionItem>
            <AccordionItem Header="JavaScript" Content="JavaScript (JS) is an interpreted computer programming language.It was originally implemented as part of web browsers so that client-side scripts could interact with the user, control the browser, communicate asynchronously, and alter the document content that was displayed.More recently, however, it has become common in both Animation development and the creation of desktop applications.">
            </AccordionItem>
        </AccordionItems>
    </SfAccordion>
</div>

@code{
    public AnimationEffect ExpandEffect = AnimationEffect.SlideDown;
    public AnimationEffect CollapseEffect = AnimationEffect.SlideUp;
    public void ExpandOption(Syncfusion.Blazor.DropDowns.ChangeEventArgs<AnimationEffect, Effect> args)
    {
        this.ExpandEffect = args.Value;
    }
    public void CollapseOption(Syncfusion.Blazor.DropDowns.ChangeEventArgs<AnimationEffect, Effect> args)
    {
        this.CollapseEffect = args.Value;
    }
    List<Effect> AnimationData = new List<Effect> {
        new Effect() { ID= AnimationEffect.SlideDown, Text= "SlideDown" },
        new Effect() { ID= AnimationEffect.SlideUp, Text= "SlideUp" },
        new Effect() { ID= AnimationEffect.FadeIn, Text= "FadeIn" },
        new Effect() { ID= AnimationEffect.FadeOut, Text= "FadeOut" },
        new Effect() { ID= AnimationEffect.FadeZoomIn, Text= "FadeZoomIn" },
        new Effect() { ID= AnimationEffect.FadeZoomOut, Text= "FadeZoomOut" },
        new Effect() { ID= AnimationEffect.ZoomIn, Text= "ZoomIn" },
        new Effect() { ID= AnimationEffect.ZoomOut, Text= "ZoomOut" },
        new Effect() { ID= AnimationEffect.None, Text= "None" }
    };
    public class Effect
    {
        public AnimationEffect ID { get; set; }
        public string Text { get; set; }
    }
}