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//! Error types for this crate.

/// The error type returned by functions in this crate which might fail.
#[derive(Fail, Debug)]
pub enum UIError {
    /// Signifies that the underlying library was unable to properly hook into the platform's GUI APIs.
    #[fail(display = "unable to initialize the underlying system bindings: {}", error)]
    FailedInitError { error: String },
    /// Signifies that an attempt was made to initialize a new instance of the underlying library while
    /// one already existed.
    #[fail(display = "cannot initialize multiple instances of the libui toolkit")]
    MultipleInitError(),
    /// Signifies that an attempt was made to remove a tab from a tab group that was out of bounds.
    #[fail(
        display = "cannot remove index {} from tab group: there are only {} tabs in the group",
        index,
        n
    )]
    TabGroupIndexOutOfBounds { index: u64, n: u64 },
}