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use crate::{Action, ActionMap};
use glib::subclass::prelude::*;
use glib::translate::*;
use glib::{Cast, GString, IsA, ObjectExt, Quark};
use once_cell::sync::Lazy;
use std::collections::HashMap;
pub trait ActionMapImpl: ObjectImpl {
fn lookup_action(&self, action_map: &Self::Type, action_name: &str) -> Option<Action>;
fn add_action(&self, action_map: &Self::Type, action: &Action);
fn remove_action(&self, action_map: &Self::Type, action_name: &str);
}
pub trait ActionMapImplExt: ObjectSubclass {
fn parent_lookup_action(&self, action_map: &Self::Type, action_name: &str) -> Option<Action>;
fn parent_add_action(&self, action_map: &Self::Type, action: &Action);
fn parent_remove_action(&self, action_map: &Self::Type, action_name: &str);
}
impl<T: ActionMapImpl> ActionMapImplExt for T {
fn parent_lookup_action(&self, action_map: &Self::Type, name: &str) -> Option<Action> {
unsafe {
let type_data = Self::type_data();
let parent_iface = type_data.as_ref().parent_interface::<ActionMap>()
as *const ffi::GActionMapInterface;
let func = (*parent_iface)
.lookup_action
.expect("no parent \"lookup_action\" implementation");
let ret = func(
action_map.unsafe_cast_ref::<ActionMap>().to_glib_none().0,
name.to_glib_none().0,
);
from_glib_none(ret)
}
}
fn parent_add_action(&self, action_map: &Self::Type, action: &Action) {
unsafe {
let type_data = Self::type_data();
let parent_iface = type_data.as_ref().parent_interface::<ActionMap>()
as *const ffi::GActionMapInterface;
let func = (*parent_iface)
.add_action
.expect("no parent \"add_action\" implementation");
func(
action_map.unsafe_cast_ref::<ActionMap>().to_glib_none().0,
action.to_glib_none().0,
);
}
}
fn parent_remove_action(&self, action_map: &Self::Type, action_name: &str) {
unsafe {
let type_data = Self::type_data();
let parent_iface = type_data.as_ref().parent_interface::<ActionMap>()
as *const ffi::GActionMapInterface;
let func = (*parent_iface)
.remove_action
.expect("no parent \"remove_action\" implementation");
func(
action_map.unsafe_cast_ref::<ActionMap>().to_glib_none().0,
action_name.to_glib_none().0,
);
}
}
}
unsafe impl<T: ActionMapImpl> IsImplementable<T> for ActionMap
where
<T as ObjectSubclass>::Type: IsA<glib::Object>,
{
fn interface_init(iface: &mut glib::Interface<Self>) {
let iface = iface.as_mut();
iface.lookup_action = Some(action_map_lookup_action::<T>);
iface.add_action = Some(action_map_add_action::<T>);
iface.remove_action = Some(action_map_remove_action::<T>);
}
}
static ACTION_MAP_LOOKUP_ACTION_QUARK: Lazy<Quark> =
Lazy::new(|| Quark::from_str("gtk-rs-subclass-action-map-lookup-action"));
unsafe extern "C" fn action_map_lookup_action<T: ActionMapImpl>(
action_map: *mut ffi::GActionMap,
action_nameptr: *const libc::c_char,
) -> *mut ffi::GAction {
let instance = &*(action_map as *mut T::Instance);
let action_name = GString::from_glib_borrow(action_nameptr);
let imp = instance.imp();
let wrap = from_glib_borrow::<_, ActionMap>(action_map);
let ret = imp.lookup_action(wrap.unsafe_cast_ref(), &action_name);
if let Some(action) = ret {
let actionptr = action.to_glib_none().0;
let mut map = wrap
.steal_qdata::<HashMap<String, Action>>(*ACTION_MAP_LOOKUP_ACTION_QUARK)
.unwrap_or_default();
map.insert(action_name.to_string(), action);
wrap.set_qdata(*ACTION_MAP_LOOKUP_ACTION_QUARK, map);
actionptr
} else {
std::ptr::null_mut()
}
}
unsafe extern "C" fn action_map_add_action<T: ActionMapImpl>(
action_map: *mut ffi::GActionMap,
actionptr: *mut ffi::GAction,
) {
let instance = &*(action_map as *mut T::Instance);
let imp = instance.imp();
let action: Borrowed<Action> = from_glib_borrow(actionptr);
imp.add_action(
from_glib_borrow::<_, ActionMap>(action_map).unsafe_cast_ref(),
&action,
);
}
unsafe extern "C" fn action_map_remove_action<T: ActionMapImpl>(
action_map: *mut ffi::GActionMap,
action_nameptr: *const libc::c_char,
) {
let instance = &*(action_map as *mut T::Instance);
let imp = instance.imp();
let action_name = GString::from_glib_borrow(action_nameptr);
imp.remove_action(
from_glib_borrow::<_, ActionMap>(action_map).unsafe_cast_ref(),
&action_name,
);
}
