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// Map, wardley map editor for linux
// Copyright (C) 2026 Rubén Beltrán del Río
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
//! Manages tracking of open files and window controllers.
//!
//! GTK is single-threaded, so thread-local storage is safe here.
use std::cell::RefCell;
use std::path::PathBuf;
use relm4::component::Controller;
use relm4::{adw};
use crate::AppModel;
use crate::actions::Action;
thread_local! {
/// Keeps window controllers alive for the lifetime of each window.
static WINDOW_CONTROLLERS: RefCell<Vec<Controller<AppModel>>> = const { RefCell::new(Vec::new()) };
/// Tracks which files are currently open to prevent duplicate windows.
static OPEN_FILES: RefCell<Vec<(PathBuf, adw::Window)>> = const { RefCell::new(Vec::new()) };
/// Stores senders for all windows (including main window) to enable broadcasting.
static WINDOW_SENDERS: RefCell<Vec<relm4::Sender<Action>>> = const { RefCell::new(Vec::new()) };
}
/// Stores a window controller to keep it alive.
pub fn store_controller(controller: Controller<AppModel>) {
WINDOW_CONTROLLERS.with_borrow_mut(|controllers| {
controllers.push(controller);
});
}
/// Returns the window that has the given file open, if any.
pub fn find_window_for_file(path: &PathBuf) -> Option<adw::Window> {
OPEN_FILES.with_borrow(|files| {
files
.iter()
.find(|(file_path, _)| file_path == path)
.map(|(_, window)| window.clone())
})
}
/// Registers a file as being open in the given window.
pub fn register_file(path: &PathBuf, window: &adw::Window) {
OPEN_FILES.with_borrow_mut(|files| {
if !files.iter().any(|(file_path, _)| file_path == path) {
files.push((path.clone(), window.clone()));
}
});
}
/// Unregisters a file when its window is closed.
pub fn unregister_file(path: &PathBuf) {
OPEN_FILES.with_borrow_mut(|files| {
files.retain(|(file_path, _)| file_path != path);
});
}
/// Registers a window's sender for broadcasting.
pub fn register_sender(sender: relm4::Sender<Action>) {
WINDOW_SENDERS.with_borrow_mut(|senders| {
senders.push(sender);
});
}
/// Broadcasts a message to all windows via their registered senders.
pub fn broadcast_to_all_windows(message: &Action) {
WINDOW_SENDERS.with_borrow(|senders| {
for sender in senders {
sender.emit(message.clone());
}
});
}
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