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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.git)
// DO NOT EDIT

use crate::TreePath;
use glib::object::IsA;
use glib::translate::*;
use std::fmt;

glib::wrapper! {
    /// Interface for Drag-and-Drop destinations in [`TreeView`][crate::TreeView].
    ///
    /// # Implements
    ///
    /// [`TreeDragDestExt`][trait@crate::prelude::TreeDragDestExt]
    #[doc(alias = "GtkTreeDragDest")]
    pub struct TreeDragDest(Interface<ffi::GtkTreeDragDest, ffi::GtkTreeDragDestIface>);

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

pub const NONE_TREE_DRAG_DEST: Option<&TreeDragDest> = None;

/// Trait containing all [`struct@TreeDragDest`] methods.
///
/// # Implementors
///
/// [`ListStore`][struct@crate::ListStore], [`TreeDragDest`][struct@crate::TreeDragDest], [`TreeStore`][struct@crate::TreeStore]
pub trait TreeDragDestExt: 'static {
    /// Asks the [`TreeDragDest`][crate::TreeDragDest] to insert a row before the path `dest`,
    /// deriving the contents of the row from `value`. If `dest` is
    /// outside the tree so that inserting before it is impossible, [`false`]
    /// will be returned. Also, [`false`] may be returned if the new row is
    /// not created for some model-specific reason. Should robustly handle
    /// a `dest` no longer found in the model!
    /// ## `dest`
    /// row to drop in front of
    /// ## `value`
    /// data to drop
    ///
    /// # Returns
    ///
    /// whether a new row was created before position `dest`
    #[doc(alias = "gtk_tree_drag_dest_drag_data_received")]
    fn drag_data_received(&self, dest: &TreePath, value: &glib::Value) -> bool;

    /// Determines whether a drop is possible before the given `dest_path`,
    /// at the same depth as `dest_path`. i.e., can we drop the data in
    /// `value` at that location. `dest_path` does not have to
    /// exist; the return value will almost certainly be [`false`] if the
    /// parent of `dest_path` doesn’t exist, though.
    /// ## `dest_path`
    /// destination row
    /// ## `value`
    /// the data being dropped
    ///
    /// # Returns
    ///
    /// [`true`] if a drop is possible before `dest_path`
    #[doc(alias = "gtk_tree_drag_dest_row_drop_possible")]
    fn row_drop_possible(&self, dest_path: &TreePath, value: &glib::Value) -> bool;
}

impl<O: IsA<TreeDragDest>> TreeDragDestExt for O {
    fn drag_data_received(&self, dest: &TreePath, value: &glib::Value) -> bool {
        unsafe {
            from_glib(ffi::gtk_tree_drag_dest_drag_data_received(
                self.as_ref().to_glib_none().0,
                mut_override(dest.to_glib_none().0),
                value.to_glib_none().0,
            ))
        }
    }

    fn row_drop_possible(&self, dest_path: &TreePath, value: &glib::Value) -> bool {
        unsafe {
            from_glib(ffi::gtk_tree_drag_dest_row_drop_possible(
                self.as_ref().to_glib_none().0,
                mut_override(dest_path.to_glib_none().0),
                value.to_glib_none().0,
            ))
        }
    }
}

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