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

use crate::{CellArea, CellAreaContext, CellRenderer, CellRendererState, Widget};
use gdk::Event;
use glib::translate::*;
use glib::{IsA, ToValue};

pub trait CellAreaExtManual {
    /// This is used by [`CellArea`][crate::CellArea] subclasses when handling events
    /// to activate cells, the base [`CellArea`][crate::CellArea] class activates cells
    /// for keyboard events for free in its own GtkCellArea->`activate()`
    /// implementation.
    /// ## `widget`
    /// the [`Widget`][crate::Widget] that `self` is rendering onto
    /// ## `renderer`
    /// the [`CellRenderer`][crate::CellRenderer] in `self` to activate
    /// ## `event`
    /// the [`gdk::Event`][crate::gdk::Event] for which cell activation should occur
    /// ## `cell_area`
    /// the [`gdk::Rectangle`][crate::gdk::Rectangle] in `widget` relative coordinates
    ///  of `renderer` for the current row.
    /// ## `flags`
    /// the [`CellRenderer`][crate::CellRenderer]State for `renderer`
    ///
    /// # Returns
    ///
    /// whether cell activation was successful
    #[doc(alias = "gtk_cell_area_activate_cell")]
    fn activate_cell<P: IsA<Widget>, Q: IsA<CellRenderer>, R: AsRef<Event>>(
        &self,
        widget: &P,
        renderer: &Q,
        event: &R,
        cell_area: &gdk::Rectangle,
        flags: CellRendererState,
    ) -> bool;

    /// Delegates event handling to a [`CellArea`][crate::CellArea].
    /// ## `context`
    /// the [`CellArea`][crate::CellArea]Context for this row of data.
    /// ## `widget`
    /// the [`Widget`][crate::Widget] that `self` is rendering to
    /// ## `event`
    /// the [`gdk::Event`][crate::gdk::Event] to handle
    /// ## `cell_area`
    /// the `widget` relative coordinates for `self`
    /// ## `flags`
    /// the [`CellRenderer`][crate::CellRenderer]State for `self` in this row.
    ///
    /// # Returns
    ///
    /// [`true`] if the event was handled by `self`.
    #[doc(alias = "gtk_cell_area_event")]
    fn event<P: IsA<CellAreaContext>, Q: IsA<Widget>, R: AsRef<Event>>(
        &self,
        context: &P,
        widget: &Q,
        event: &R,
        cell_area: &gdk::Rectangle,
        flags: CellRendererState,
    ) -> i32;

    /// Gets the values of one or more cell properties for `renderer` in `self`.
    /// ## `renderer`
    /// a [`CellRenderer`][crate::CellRenderer] which is inside `self`
    /// ## `first_prop_name`
    /// the name of the first cell property to get
    #[doc(alias = "gtk_cell_area_cell_get_valist")]
    #[doc(alias = "gtk_cell_area_cell_get_property")]
    fn cell_get<P: IsA<CellRenderer>>(&self, renderer: &P, property_name: &str) -> glib::Value;

    /// Sets one or more cell properties for `cell` in `self`.
    /// ## `renderer`
    /// a [`CellRenderer`][crate::CellRenderer] which is a cell inside `self`
    /// ## `first_prop_name`
    /// the name of the first cell property to set
    #[doc(alias = "gtk_cell_area_cell_set_valist")]
    #[doc(alias = "gtk_cell_area_cell_set_property")]
    fn cell_set<P: IsA<CellRenderer>>(
        &self,
        renderer: &P,
        property_name: &str,
        value: &dyn ToValue,
    );
}

impl<O: IsA<CellArea>> CellAreaExtManual for O {
    fn activate_cell<P: IsA<Widget>, Q: IsA<CellRenderer>, R: AsRef<Event>>(
        &self,
        widget: &P,
        renderer: &Q,
        event: &R,
        cell_area: &gdk::Rectangle,
        flags: CellRendererState,
    ) -> bool {
        unsafe {
            from_glib(ffi::gtk_cell_area_activate_cell(
                self.as_ref().to_glib_none().0,
                widget.as_ref().to_glib_none().0,
                renderer.as_ref().to_glib_none().0,
                event.as_ref().to_glib_none().0,
                cell_area.to_glib_none().0,
                flags.into_glib(),
            ))
        }
    }

    fn cell_get<P: IsA<CellRenderer>>(&self, renderer: &P, property_name: &str) -> glib::Value {
        unsafe {
            let cell_class = glib::Class::<CellArea>::from_type(O::static_type()).unwrap();
            let pspec: Option<glib::ParamSpec> =
                from_glib_none(ffi::gtk_cell_area_class_find_cell_property(
                    cell_class.as_ref() as *const _ as *mut ffi::GtkCellAreaClass,
                    property_name.to_glib_none().0,
                ));
            let pspec = pspec.unwrap_or_else(|| {
                panic!("The CellArea property {} doesn't exists", property_name)
            });
            let mut value = glib::Value::from_type(pspec.value_type());
            ffi::gtk_cell_area_cell_get_property(
                self.as_ref().to_glib_none().0,
                renderer.as_ref().to_glib_none().0,
                property_name.to_glib_none().0,
                value.to_glib_none_mut().0,
            );
            value
        }
    }

    fn cell_set<P: IsA<CellRenderer>>(
        &self,
        renderer: &P,
        property_name: &str,
        value: &dyn ToValue,
    ) {
        unsafe {
            let cell_class = glib::Class::<CellArea>::from_type(O::static_type()).unwrap();
            let pspec: Option<glib::ParamSpec> =
                from_glib_none(ffi::gtk_cell_area_class_find_cell_property(
                    cell_class.as_ref() as *const _ as *mut ffi::GtkCellAreaClass,
                    property_name.to_glib_none().0,
                ));
            let pspec = pspec.unwrap_or_else(|| {
                panic!("The CellArea property {} doesn't exists", property_name)
            });
            if !pspec.value_type().is_a(value.value_type()) {
                panic!(
                    "The CellArea property's value is of wrong type. Expected '{}' but got '{}'",
                    pspec.value_type(),
                    value.value_type()
                )
            }

            ffi::gtk_cell_area_cell_set_property(
                self.as_ref().to_glib_none().0,
                renderer.as_ref().to_glib_none().0,
                property_name.to_glib_none().0,
                value.to_value().to_glib_none().0,
            );
        }
    }

    fn event<P: IsA<CellAreaContext>, Q: IsA<Widget>, R: AsRef<Event>>(
        &self,
        context: &P,
        widget: &Q,
        event: &R,
        cell_area: &gdk::Rectangle,
        flags: CellRendererState,
    ) -> i32 {
        unsafe {
            ffi::gtk_cell_area_event(
                self.as_ref().to_glib_none().0,
                context.as_ref().to_glib_none().0,
                widget.as_ref().to_glib_none().0,
                event.as_ref().to_glib_none().0,
                cell_area.to_glib_none().0,
                flags.into_glib(),
            )
        }
    }
}