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Positioning in Blazor Toast component

The toast position can be updated based on predefined positions or customizable positions. The predefined position combinations are updated in the X and Y position properties.

Predefined

X Positions

  • Left
  • Center
  • Right

Y Positions

  • Top
  • Bottom

In multiple toast display, the new toast position will not be updated on dynamic change of property values until the old toast messages removed. The toast occupies full width when you set the width to ‘100%’, so the X positions will not affect the changes when the width is ‘100%‘.

Custom

Custom X and Y positions can be given as pixels/numbers/percentage. The number value is considered as pixels based on the top and left values updated in the toast.

@using Syncfusion.Blazor.Inputs
@using Syncfusion.Blazor.Buttons
@using Syncfusion.Blazor.DropDowns
@using Syncfusion.Blazor.Notifications

<SfToast @ref="ToastObj" Target="@ToastTarget" Title="Matt sent you a friend request" Height="@Height" Width="@Width" Content="@ToastContent">
    <ToastPosition X="@PositionX" Y="@PositionY"></ToastPosition>
</SfToast>

<div class="col-lg-12 col-sm-12 col-md-12 center">
    <div id="toastBtnDefault" style="margin: auto; text-align: center">
        <SfButton @onclick="ShowToast"> Show Toast </SfButton>
        <SfButton @onclick="HideToast"> Hide All </SfButton>
    </div>
</div>

<div class='row' style="padding-top: 20px" id="toast_pos_target">
    <div id="toast_pos"> </div>
    <div id="toast_pos_property">
        <table style="width: 100%">
            <tr>
                <td>
                    <div style='padding:25px 0 0 0;'>
                        <SfRadioButton Label="Position" Name="toastPos" Value="Position" @bind-Checked="@Checked2" ValueChange="@RadioButtonChange" TChecked="string"></SfRadioButton>
                    </div>
                </td>
                <td>
                    <div style='padding:25px 0 0 0;'>
                        <SfRadioButton Label="Custom" Name="toastPos" Value="Custom" @bind-Checked="@checkedCustom" ValueChange="@RadioButtonChange" TChecked="string"></SfRadioButton>
                    </div>
                </td>
            </tr>
            <tr>
                <td id="dropdownChoose" colspan="2" style="display:@DropDownDisplay;">
                    <SfDropDownList @ref="ListObj" Index="5" Placeholder="Select a position" PopupHeight="200PX" DataSource="@DropDownData" TValue="string" TItem="DropDownfields">
                        <DropDownListFieldSettings Text="id" Value="text"></DropDownListFieldSettings>
                        <DropDownListEvents ValueChange="@DropDownChange" TValue="string"></DropDownListEvents>
                    </SfDropDownList>
                </td>
            </tr>
            <tr>
                <td colspan="2" id="customChoose" style="display:@TextBoxDisplay;">
                    <form id="formId" class="form-horizontal">
                        <div class='e-row'>
                            <SfTextBox @ref="TextXpos" Value="50" Placeholder="X Position" FloatLabelType="@FloatLabelType.Auto"></SfTextBox>
                        </div>
                        <div class='e-row'>
                            <SfTextBox @ref="TextYpos" Value="50" Placeholder="Y Position" FloatLabelType="@FloatLabelType.Auto"></SfTextBox>
                        </div>
                    </form>
                </td>
            </tr>
            <tr>
                <td>
                    <div style='padding:25px 0 0 0;'>
                        <SfRadioButton id="radio1" Label="Target" Name="toast" Value="Target" @bind-Checked="@targetChecked" ValueChange="@RadioButtonChange" TChecked="string"></SfRadioButton>
                    </div>
                </td>
                <td>
                    <div style='padding:25px 0 0 0;'>
                        <SfRadioButton id="radio2" Label="Global" Name="toast" Value="Global" @bind-Checked="@Checked" ValueChange="@RadioButtonChange" TChecked="string"></SfRadioButton>
                    </div>
                </td>
            </tr>
        </table>
    </div>
</div>

<style>
    #toast_default .e-meeting::before {
        content: "\e705";
        font-size: 17px;
    }

    #toast_pos_property {
        width: 250px;
    }

        #toast_pos_property td {
            width: 50%;
        }

    #toast_pos_target {
        margin: 50px 200px;
    }
</style>

@code {
    SfToast ToastObj;
    SfTextBox TextXpos;
    SfTextBox TextYpos;
    SfDropDownList<string, DropDownfields> ListObj;

    private bool CustomFlag;
    private string Width = "300";
    private string Height = "auto";
    private string ToastTarget = null;
    private string PositionX = "Center";
    private string PositionY = "Bottom";
    private string Checked2 { get; set; } = "Position";
    private string Checked { get; set; } = "Global";
    private string checkedCustom { get; set; } = "Custom";
    private string targetChecked { get; set; } = "Target";

    private string DropDownDisplay { get; set; } = "";
    private string TextBoxDisplay { get; set; } = "none";
    private string ToastContent = "You have a new friend request yet to accept";

    public class DropDownfields
    {
        public string id { get; set; }
        public string text { get; set; }
    }

    private List<DropDownfields> DropDownData = new List<DropDownfields>()
{
        new DropDownfields(){ id= "topleft", text= "Top Left" },
        new DropDownfields(){ id= "topright", text= "Top Right" },
        new DropDownfields(){ id= "topcenter", text= "Top Center" },
        new DropDownfields(){ id= "bottomleft", text= "Bottom Left" },
        new DropDownfields(){ id= "bottomright", text= "Bottom Right" },
        new DropDownfields(){ id= "bottomcenter", text= "Bottom Center" }
    };

    private async Task ShowToast()
    {
        if (CustomFlag)
        {
            this.SetCustomPosValue();
        }
        await ToastObj.Show();
    }

    private async Task HideToast()
    {
        await ToastObj.Hide("All");
    }

    //Setting Toast Custom Position
    private void SetCustomPosValue()
    {
        PositionX = TextXpos.Value;
        PositionY = TextYpos.Value;
    }

    private async Task DropDownChange(Syncfusion.Blazor.DropDowns.ChangeEventArgs<string> e)
    {
        await ToastObj.Hide("All");
        this.SetToastPosition(e.Value.ToString());
    }

    private void SetToastPosition(string value)
    {
        switch (value)
        {
            case "Top Left":
                PositionX = "Left";
                PositionY = "Top";
                break;

            case "Top Right":
                PositionX = "Right";
                PositionY = "Top";
                break;

            case "Top Center":
                PositionX = "Center";
                PositionY = "Top";
                break;

            case "Bottom Left":
                PositionX = "Left";
                PositionY = "Bottom";
                break;

            case "Bottom Right":
                PositionX = "Right";
                PositionY = "Bottom";
                break;

            case "Bottom Center":
                PositionX = "Center";
                PositionY = "Bottom";
                break;
        }
    }

    private async Task RadioButtonChange(Syncfusion.Blazor.Buttons.ChangeArgs<string> e)
    {
        if (e.Value == "Target")
        {
            await ToastObj.Hide("All");
            ToastTarget = "#toast_pos_target";
            StateHasChanged();
        }
        else if (e.Value == "Global")
        {
            await ToastObj.Hide("All");
            ToastTarget = null;
            StateHasChanged();
        }
        else if (e.Value == "Position")
        {
            await ToastObj.Hide("All");
            DropDownDisplay = "table-cell";
            TextBoxDisplay = "none";
            this.SetToastPosition(ListObj.Value.ToString());
            CustomFlag = false;
        }
        else if (e.Value == "Custom")
        {
            await ToastObj.Hide("All");
            TextBoxDisplay = "table-cell";
            DropDownDisplay = "none";
            this.SetCustomPosValue();
            CustomFlag = true;
        }
    }
}
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