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// This file was generated by gir (https://github.com/gtk-rs/gir)
// from gir-files (https://github.com/gtk-rs/gir-files)
// DO NOT EDIT

use crate::Hyperlink;
use glib::object::Cast;
use glib::object::IsA;
use glib::signal::connect_raw;
use glib::signal::SignalHandlerId;
use glib::translate::*;
use std::boxed::Box as Box_;
use std::fmt;
use std::mem::transmute;

glib::wrapper! {
    /// An interface used for objects which implement linking between
    /// multiple resource or content locations, or multiple 'markers'
    /// within a single document. A Hypertext instance is associated with
    /// one or more Hyperlinks, which are associated with particular
    /// offsets within the Hypertext's included content. While this
    /// interface is derived from Text, there is no requirement that
    /// Hypertext instances have textual content; they may implement Image
    /// as well, and Hyperlinks need not have non-zero text offsets.
    ///
    /// # Implements
    ///
    /// [`HypertextExt`][trait@crate::prelude::HypertextExt]
    #[doc(alias = "AtkHypertext")]
    pub struct Hypertext(Interface<ffi::AtkHypertext, ffi::AtkHypertextIface>);

    match fn {
        type_ => || ffi::atk_hypertext_get_type(),
    }
}

impl Hypertext {
    pub const NONE: Option<&'static Hypertext> = None;
}

/// Trait containing all [`struct@Hypertext`] methods.
///
/// # Implementors
///
/// [`Hypertext`][struct@crate::Hypertext], [`NoOpObject`][struct@crate::NoOpObject]
pub trait HypertextExt: 'static {
    /// Gets the link in this hypertext document at index
    /// `link_index`
    /// ## `link_index`
    /// an integer specifying the desired link
    ///
    /// # Returns
    ///
    /// the link in this hypertext document at
    /// index `link_index`
    #[doc(alias = "atk_hypertext_get_link")]
    #[doc(alias = "get_link")]
    fn link(&self, link_index: i32) -> Option<Hyperlink>;

    /// Gets the index into the array of hyperlinks that is associated with
    /// the character specified by `char_index`.
    /// ## `char_index`
    /// a character index
    ///
    /// # Returns
    ///
    /// an index into the array of hyperlinks in `self`,
    /// or -1 if there is no hyperlink associated with this character.
    #[doc(alias = "atk_hypertext_get_link_index")]
    #[doc(alias = "get_link_index")]
    fn link_index(&self, char_index: i32) -> i32;

    /// Gets the number of links within this hypertext document.
    ///
    /// # Returns
    ///
    /// the number of links within this hypertext document
    #[doc(alias = "atk_hypertext_get_n_links")]
    #[doc(alias = "get_n_links")]
    fn n_links(&self) -> i32;

    /// The "link-selected" signal is emitted by an AtkHyperText
    /// object when one of the hyperlinks associated with the object
    /// is selected.
    /// ## `arg1`
    /// the index of the hyperlink which is selected
    #[doc(alias = "link-selected")]
    fn connect_link_selected<F: Fn(&Self, i32) + 'static>(&self, f: F) -> SignalHandlerId;
}

impl<O: IsA<Hypertext>> HypertextExt for O {
    fn link(&self, link_index: i32) -> Option<Hyperlink> {
        unsafe {
            from_glib_none(ffi::atk_hypertext_get_link(
                self.as_ref().to_glib_none().0,
                link_index,
            ))
        }
    }

    fn link_index(&self, char_index: i32) -> i32 {
        unsafe { ffi::atk_hypertext_get_link_index(self.as_ref().to_glib_none().0, char_index) }
    }

    fn n_links(&self) -> i32 {
        unsafe { ffi::atk_hypertext_get_n_links(self.as_ref().to_glib_none().0) }
    }

    fn connect_link_selected<F: Fn(&Self, i32) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn link_selected_trampoline<
            P: IsA<Hypertext>,
            F: Fn(&P, i32) + 'static,
        >(
            this: *mut ffi::AtkHypertext,
            arg1: libc::c_int,
            f: glib::ffi::gpointer,
        ) {
            let f: &F = &*(f as *const F);
            f(Hypertext::from_glib_borrow(this).unsafe_cast_ref(), arg1)
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                b"link-selected\0".as_ptr() as *const _,
                Some(transmute::<_, unsafe extern "C" fn()>(
                    link_selected_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }
}

impl fmt::Display for Hypertext {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        f.write_str("Hypertext")
    }
}