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// Take a look at the license at the top of the repository in the LICENSE file.

use crate::EventType;
use glib::translate::*;
use std::fmt;

glib::wrapper! {
    /// An event related to a button on a pointer device.
    #[doc(alias = "GdkButtonEvent")]
    pub struct ButtonEvent(Shared<ffi::GdkButtonEvent>);

    match fn {
        ref => |ptr| ffi::gdk_event_ref(ptr as *mut ffi::GdkEvent),
        unref => |ptr| ffi::gdk_event_unref(ptr as *mut ffi::GdkEvent),
    }
}

define_event! {
    ButtonEvent,
    ffi::GdkButtonEvent,
    ffi::gdk_button_event_get_type,
    &[EventType::ButtonPress, EventType::ButtonRelease]
}

impl ButtonEvent {
    /// Extract the button number from a button event.
    ///
    /// # Returns
    ///
    /// the button of `self`
    #[doc(alias = "gdk_button_event_get_button")]
    #[doc(alias = "get_button")]
    pub fn button(&self) -> u32 {
        unsafe { ffi::gdk_button_event_get_button(self.to_glib_none().0) }
    }
}

impl fmt::Display for ButtonEvent {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        f.debug_struct("ButtonEvent")
            .field("button", &self.button())
            .finish()
    }
}