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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::CssLocation;
use glib::{prelude::*, translate::*};
use std::fmt;

glib::wrapper! {
    /// Defines a part of a CSS document.
    ///
    /// Because sections are nested into one another, you can use
    /// [`parent()`][Self::parent()] to get the containing region.
    #[derive(Debug, PartialEq, Eq, PartialOrd, Ord, Hash)]
    pub struct CssSection(Shared<ffi::GtkCssSection>);

    match fn {
        ref => |ptr| ffi::gtk_css_section_ref(ptr),
        unref => |ptr| ffi::gtk_css_section_unref(ptr),
        type_ => || ffi::gtk_css_section_get_type(),
    }
}

impl CssSection {
    /// Creates a new [`CssSection`][crate::CssSection] referring to the section
    /// in the given `file` from the `start` location to the
    /// `end` location.
    /// ## `file`
    /// The file this section refers to
    /// ## `start`
    /// The start location
    /// ## `end`
    /// The end location
    ///
    /// # Returns
    ///
    /// a new [`CssSection`][crate::CssSection]
    #[doc(alias = "gtk_css_section_new")]
    pub fn new(
        file: Option<&impl IsA<gio::File>>,
        start: &CssLocation,
        end: &CssLocation,
    ) -> CssSection {
        assert_initialized_main_thread!();
        unsafe {
            from_glib_full(ffi::gtk_css_section_new(
                file.map(|p| p.as_ref()).to_glib_none().0,
                start.to_glib_none().0,
                end.to_glib_none().0,
            ))
        }
    }

    /// Returns the location in the CSS document where this section ends.
    ///
    /// # Returns
    ///
    /// The end location of
    ///   this section
    #[doc(alias = "gtk_css_section_get_end_location")]
    #[doc(alias = "get_end_location")]
    pub fn end_location(&self) -> CssLocation {
        unsafe { from_glib_none(ffi::gtk_css_section_get_end_location(self.to_glib_none().0)) }
    }

    /// Gets the file that @self was parsed from.
    ///
    /// If no such file exists, for example because the CSS was loaded via
    /// [`CssProvider::load_from_data()`][crate::CssProvider::load_from_data()], then `NULL` is returned.
    ///
    /// # Returns
    ///
    /// the `GFile` from which the `section`
    ///   was parsed
    #[doc(alias = "gtk_css_section_get_file")]
    #[doc(alias = "get_file")]
    pub fn file(&self) -> Option<gio::File> {
        unsafe { from_glib_none(ffi::gtk_css_section_get_file(self.to_glib_none().0)) }
    }

    /// Gets the parent section for the given `section`.
    ///
    /// The parent section is the section that contains this `section`. A special
    /// case are sections of  type `GTK_CSS_SECTION_DOCUMEN`T. Their parent will
    /// either be `NULL` if they are the original CSS document that was loaded by
    /// [`CssProvider::load_from_file()`][crate::CssProvider::load_from_file()] or a section of type
    /// `GTK_CSS_SECTION_IMPORT` if it was loaded with an `@import` rule from
    /// a different file.
    ///
    /// # Returns
    ///
    /// the parent section
    #[doc(alias = "gtk_css_section_get_parent")]
    #[doc(alias = "get_parent")]
    #[must_use]
    pub fn parent(&self) -> Option<CssSection> {
        unsafe { from_glib_none(ffi::gtk_css_section_get_parent(self.to_glib_none().0)) }
    }

    /// Returns the location in the CSS document where this section starts.
    ///
    /// # Returns
    ///
    /// The start location of
    ///   this section
    #[doc(alias = "gtk_css_section_get_start_location")]
    #[doc(alias = "get_start_location")]
    pub fn start_location(&self) -> CssLocation {
        unsafe {
            from_glib_none(ffi::gtk_css_section_get_start_location(
                self.to_glib_none().0,
            ))
        }
    }

    /// Prints the section into a human-readable text form using
    /// `Gtk::CssSection::print()`.
    ///
    /// # Returns
    ///
    /// A new string.
    #[doc(alias = "gtk_css_section_to_string")]
    #[doc(alias = "to_string")]
    pub fn to_str(&self) -> glib::GString {
        unsafe { from_glib_full(ffi::gtk_css_section_to_string(self.to_glib_none().0)) }
    }
}

impl fmt::Display for CssSection {
    #[inline]
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        f.write_str(&self.to_str())
    }
}