public URLButton(string title, string url, WebviewHeightRatio webviewHeightRatio = WebviewHeightRatio.Full, bool?messengerExtensions = null, string fallbackUrl = null)
: this()
{
this.Title = title;
this.Url = url;
this.WebviewHeightRatio = webviewHeightRatio;
this.MessengerExtensions = messengerExtensions;
this.FallbackUrl = fallbackUrl;
}
/// <summary>
/// Initializes a new <see cref="UrlButton"/> object.
/// </summary>
/// <param name="title">The text displayed on the button. Limited to 20 characters.</param>
/// <param name="url">The URL the user is sent to on click.</param>
/// <param name="fallBackUrl">The fallback URL if Messenger Extensions is not supported by the client. Settings this automatically enables Messenger Extensions.</param>
/// <param name="webviewHeightRatio">The height of the webview. Only has effect if Messenger Extensions is enabled.</param>
/// <param name="hideShareButton">True to disable the share button in the webview.</param>
public UrlButton(
string title,
string url,
string fallBackUrl = null,
WebviewHeightRatio webviewHeightRatio = WebviewHeightRatio.Full,
bool hideShareButton = false
)
{
if (title == null)
{
throw new ValueException("Title must be set.");
}
if (title.Length > 20)
{
throw new ValueException("Title must not exceed 20 characters.");
}
if (!Uri.TryCreate(url, UriKind.Absolute, out _url))
{
throw new ValueException("URL must be a valid absolute URI.");
}
if (fallBackUrl != null)
{
if (_url.Scheme != Uri.UriSchemeHttps)
{
throw new ValueException("URL must be using the HTTPS protocol if using Messenger Extensions.");
}
if (!Uri.TryCreate(fallBackUrl, UriKind.Absolute, out _fallbackUrl))
{
throw new ValueException("Fallback URL must be a valid absolute URI.");
}
_useMessengerExtensions = true;
}
_title = title;
_heightRatio = webviewHeightRatio;
_hideShareButton = hideShareButton;
}
public WebviewHeightRatioNotSupportedException(WebviewHeightRatio ratio)
: base($"Invalid webview height ratio: {ratio.ToString()}")
{
}
