// 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 glib::{
    prelude::*,
    signal::{connect_raw, SignalHandlerId},
    translate::*,
};
use std::{boxed::Box as Box_, fmt, mem::transmute};

glib::wrapper! {
    /// [`SliceListModel`][crate::SliceListModel] is a list model that presents a slice of another model.
    ///
    /// This is useful when implementing paging by setting the size to the number
    /// of elements per page and updating the offset whenever a different page is
    /// opened.
    ///
    /// ## Properties
    ///
    ///
    /// #### `item-type`
    ///  The type of items. See [`ListModelExtManual::item_type()`][crate::gio::prelude::ListModelExtManual::item_type()].
    ///
    /// Readable
    ///
    ///
    /// #### `model`
    ///  Child model to take slice from.
    ///
    /// Readable | Writeable
    ///
    ///
    /// #### `n-items`
    ///  The number of items. See [`ListModelExtManual::n_items()`][crate::gio::prelude::ListModelExtManual::n_items()].
    ///
    /// Readable
    ///
    ///
    /// #### `offset`
    ///  Offset of slice.
    ///
    /// Readable | Writeable
    ///
    ///
    /// #### `size`
    ///  Maximum size of slice.
    ///
    /// Readable | Writeable
    ///
    /// # Implements
    ///
    /// [`trait@glib::ObjectExt`], [`trait@gio::prelude::ListModelExt`]
    #[doc(alias = "GtkSliceListModel")]
    pub struct SliceListModel(Object<ffi::GtkSliceListModel, ffi::GtkSliceListModelClass>) @implements gio::ListModel;

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

impl SliceListModel {
    /// Creates a new slice model.
    ///
    /// It presents the slice from @offset to offset + @size
    /// of the given @model.
    /// ## `model`
    /// The model to use
    /// ## `offset`
    /// the offset of the slice
    /// ## `size`
    /// maximum size of the slice
    ///
    /// # Returns
    ///
    /// A new [`SliceListModel`][crate::SliceListModel]
    #[doc(alias = "gtk_slice_list_model_new")]
    pub fn new(model: Option<impl IsA<gio::ListModel>>, offset: u32, size: u32) -> SliceListModel {
        assert_initialized_main_thread!();
        unsafe {
            from_glib_full(ffi::gtk_slice_list_model_new(
                model.map(|p| p.upcast()).into_glib_ptr(),
                offset,
                size,
            ))
        }
    }

    // rustdoc-stripper-ignore-next
    /// Creates a new builder-pattern struct instance to construct [`SliceListModel`] objects.
    ///
    /// This method returns an instance of [`SliceListModelBuilder`](crate::builders::SliceListModelBuilder) which can be used to create [`SliceListModel`] objects.
    pub fn builder() -> SliceListModelBuilder {
        SliceListModelBuilder::new()
    }

    /// Gets the model that is currently being used or [`None`] if none.
    ///
    /// # Returns
    ///
    /// The model in use
    #[doc(alias = "gtk_slice_list_model_get_model")]
    #[doc(alias = "get_model")]
    pub fn model(&self) -> Option<gio::ListModel> {
        unsafe { from_glib_none(ffi::gtk_slice_list_model_get_model(self.to_glib_none().0)) }
    }

    /// Gets the offset set via gtk_slice_list_model_set_offset().
    ///
    /// # Returns
    ///
    /// The offset
    #[doc(alias = "gtk_slice_list_model_get_offset")]
    #[doc(alias = "get_offset")]
    pub fn offset(&self) -> u32 {
        unsafe { ffi::gtk_slice_list_model_get_offset(self.to_glib_none().0) }
    }

    /// Gets the size set via gtk_slice_list_model_set_size().
    ///
    /// # Returns
    ///
    /// The size
    #[doc(alias = "gtk_slice_list_model_get_size")]
    #[doc(alias = "get_size")]
    pub fn size(&self) -> u32 {
        unsafe { ffi::gtk_slice_list_model_get_size(self.to_glib_none().0) }
    }

    /// Sets the model to show a slice of.
    ///
    /// The model's item type must conform to @self's item type.
    /// ## `model`
    /// The model to be sliced
    #[doc(alias = "gtk_slice_list_model_set_model")]
    pub fn set_model(&self, model: Option<&impl IsA<gio::ListModel>>) {
        unsafe {
            ffi::gtk_slice_list_model_set_model(
                self.to_glib_none().0,
                model.map(|p| p.as_ref()).to_glib_none().0,
            );
        }
    }

    /// Sets the offset into the original model for this slice.
    ///
    /// If the offset is too large for the sliced model,
    /// @self will end up empty.
    /// ## `offset`
    /// the new offset to use
    #[doc(alias = "gtk_slice_list_model_set_offset")]
    pub fn set_offset(&self, offset: u32) {
        unsafe {
            ffi::gtk_slice_list_model_set_offset(self.to_glib_none().0, offset);
        }
    }

    /// Sets the maximum size. @self will never have more items
    /// than @size.
    ///
    /// It can however have fewer items if the offset is too large
    /// or the model sliced from doesn't have enough items.
    /// ## `size`
    /// the maximum size
    #[doc(alias = "gtk_slice_list_model_set_size")]
    pub fn set_size(&self, size: u32) {
        unsafe {
            ffi::gtk_slice_list_model_set_size(self.to_glib_none().0, size);
        }
    }

    #[doc(alias = "model")]
    pub fn connect_model_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_model_trampoline<F: Fn(&SliceListModel) + 'static>(
            this: *mut ffi::GtkSliceListModel,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            let f: &F = &*(f as *const F);
            f(&from_glib_borrow(this))
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                b"notify::model\0".as_ptr() as *const _,
                Some(transmute::<_, unsafe extern "C" fn()>(
                    notify_model_trampoline::<F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "offset")]
    pub fn connect_offset_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_offset_trampoline<F: Fn(&SliceListModel) + 'static>(
            this: *mut ffi::GtkSliceListModel,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            let f: &F = &*(f as *const F);
            f(&from_glib_borrow(this))
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                b"notify::offset\0".as_ptr() as *const _,
                Some(transmute::<_, unsafe extern "C" fn()>(
                    notify_offset_trampoline::<F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "size")]
    pub fn connect_size_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_size_trampoline<F: Fn(&SliceListModel) + 'static>(
            this: *mut ffi::GtkSliceListModel,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            let f: &F = &*(f as *const F);
            f(&from_glib_borrow(this))
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                b"notify::size\0".as_ptr() as *const _,
                Some(transmute::<_, unsafe extern "C" fn()>(
                    notify_size_trampoline::<F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }
}

impl Default for SliceListModel {
    fn default() -> Self {
        glib::object::Object::new::<Self>()
    }
}

// rustdoc-stripper-ignore-next
/// A [builder-pattern] type to construct [`SliceListModel`] objects.
///
/// [builder-pattern]: https://doc.rust-lang.org/1.0.0/style/ownership/builders.html
#[must_use = "The builder must be built to be used"]
pub struct SliceListModelBuilder {
    builder: glib::object::ObjectBuilder<'static, SliceListModel>,
}

impl SliceListModelBuilder {
    fn new() -> Self {
        Self {
            builder: glib::object::Object::builder(),
        }
    }

    /// Child model to take slice from.
    pub fn model(self, model: &impl IsA<gio::ListModel>) -> Self {
        Self {
            builder: self.builder.property("model", model.clone().upcast()),
        }
    }

    /// Offset of slice.
    pub fn offset(self, offset: u32) -> Self {
        Self {
            builder: self.builder.property("offset", offset),
        }
    }

    /// Maximum size of slice.
    pub fn size(self, size: u32) -> Self {
        Self {
            builder: self.builder.property("size", size),
        }
    }

    // rustdoc-stripper-ignore-next
    /// Build the [`SliceListModel`].
    #[must_use = "Building the object from the builder is usually expensive and is not expected to have side effects"]
    pub fn build(self) -> SliceListModel {
        self.builder.build()
    }
}

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