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use crate::subclass::prelude::*;
use crate::{TreeDragSource, TreePath};
use glib::translate::*;
use glib::Cast;
pub trait TreeDragSourceImpl: ObjectImpl {
fn row_draggable(&self, tree_drag_source: &Self::Type, path: &TreePath) -> bool {
self.parent_row_draggable(tree_drag_source, path)
}
fn drag_data_get(&self, tree_drag_source: &Self::Type, path: &TreePath)
-> gdk::ContentProvider;
fn drag_data_delete(&self, tree_drag_source: &Self::Type, path: &TreePath) -> bool;
}
pub trait TreeDragSourceImplExt: ObjectSubclass {
fn parent_row_draggable(&self, _tree_drag_source: &Self::Type, _path: &TreePath) -> bool;
fn parent_drag_data_get(
&self,
tree_drag_source: &Self::Type,
path: &TreePath,
) -> gdk::ContentProvider;
fn parent_drag_data_delete(&self, tree_drag_source: &Self::Type, path: &TreePath) -> bool;
}
impl<T: TreeDragSourceImpl> TreeDragSourceImplExt for T {
fn parent_row_draggable(&self, tree_drag_source: &Self::Type, path: &TreePath) -> bool {
unsafe {
let type_data = Self::type_data();
let parent_iface = type_data.as_ref().parent_interface::<TreeDragSource>()
as *const ffi::GtkTreeDragSourceIface;
if let Some(func) = (*parent_iface).row_draggable {
from_glib(func(
tree_drag_source
.unsafe_cast_ref::<TreeDragSource>()
.to_glib_none()
.0,
mut_override(path.to_glib_none().0),
))
} else {
true
}
}
}
fn parent_drag_data_get(
&self,
tree_drag_source: &Self::Type,
path: &TreePath,
) -> gdk::ContentProvider {
unsafe {
let type_data = Self::type_data();
let parent_iface = type_data.as_ref().parent_interface::<TreeDragSource>()
as *const ffi::GtkTreeDragSourceIface;
let func = (*parent_iface)
.drag_data_get
.expect("no parent \"drag_data_get\" implementation");
from_glib_full(func(
tree_drag_source
.unsafe_cast_ref::<TreeDragSource>()
.to_glib_none()
.0,
mut_override(path.to_glib_none().0),
))
}
}
fn parent_drag_data_delete(&self, tree_drag_source: &Self::Type, path: &TreePath) -> bool {
unsafe {
let type_data = Self::type_data();
let parent_iface = type_data.as_ref().parent_interface::<TreeDragSource>()
as *const ffi::GtkTreeDragSourceIface;
let func = (*parent_iface)
.drag_data_delete
.expect("no parent \"drag_data_delete\" implementation");
from_glib(func(
tree_drag_source
.unsafe_cast_ref::<TreeDragSource>()
.to_glib_none()
.0,
mut_override(path.to_glib_none().0),
))
}
}
}
unsafe impl<T: TreeDragSourceImpl> IsImplementable<T> for TreeDragSource {
fn interface_init(iface: &mut glib::Interface<Self>) {
let iface = iface.as_mut();
assert!(
crate::rt::is_initialized(),
"GTK has to be initialized first"
);
iface.row_draggable = Some(tree_drag_source_row_draggable::<T>);
iface.drag_data_get = Some(tree_drag_source_drag_data_get::<T>);
iface.drag_data_delete = Some(tree_drag_source_drag_data_delete::<T>);
}
}
unsafe extern "C" fn tree_drag_source_row_draggable<T: TreeDragSourceImpl>(
tree_drag_source: *mut ffi::GtkTreeDragSource,
pathptr: *mut ffi::GtkTreePath,
) -> glib::ffi::gboolean {
let instance = &*(tree_drag_source as *mut T::Instance);
let imp = instance.imp();
let path: Borrowed<TreePath> = from_glib_borrow(pathptr);
imp.row_draggable(
from_glib_borrow::<_, TreeDragSource>(tree_drag_source).unsafe_cast_ref(),
&path,
)
.into_glib()
}
unsafe extern "C" fn tree_drag_source_drag_data_get<T: TreeDragSourceImpl>(
tree_drag_source: *mut ffi::GtkTreeDragSource,
pathptr: *mut ffi::GtkTreePath,
) -> *mut gdk::ffi::GdkContentProvider {
let instance = &*(tree_drag_source as *mut T::Instance);
let imp = instance.imp();
let path: Borrowed<TreePath> = from_glib_borrow(pathptr);
imp.drag_data_get(
from_glib_borrow::<_, TreeDragSource>(tree_drag_source).unsafe_cast_ref(),
&path,
)
.to_glib_full()
}
unsafe extern "C" fn tree_drag_source_drag_data_delete<T: TreeDragSourceImpl>(
tree_drag_source: *mut ffi::GtkTreeDragSource,
pathptr: *mut ffi::GtkTreePath,
) -> glib::ffi::gboolean {
let instance = &*(tree_drag_source as *mut T::Instance);
let imp = instance.imp();
let path: Borrowed<TreePath> = from_glib_borrow(pathptr);
imp.drag_data_delete(
from_glib_borrow::<_, TreeDragSource>(tree_drag_source).unsafe_cast_ref(),
&path,
)
.into_glib()
}