fractal/components/
offline_banner.rs

1use adw::{prelude::*, subclass::prelude::*};
2use gtk::{gio, glib, glib::clone};
3
4use crate::{session::Session, utils::BoundObjectWeakRef};
5
6mod imp {
7    use std::cell::RefCell;
8
9    use gettextrs::gettext;
10
11    use super::*;
12
13    #[derive(Debug, Default, glib::Properties)]
14    #[properties(wrapper_type = super::OfflineBanner)]
15    pub struct OfflineBanner {
16        banner: adw::Banner,
17        /// The session to check.
18        #[property(get, set = Self::set_session, explicit_notify, nullable)]
19        session: BoundObjectWeakRef<Session>,
20        monitor_handler: RefCell<Option<glib::SignalHandlerId>>,
21    }
22
23    #[glib::object_subclass]
24    impl ObjectSubclass for OfflineBanner {
25        const NAME: &'static str = "OfflineBanner";
26        type Type = super::OfflineBanner;
27        type ParentType = adw::Bin;
28    }
29
30    #[glib::derived_properties]
31    impl ObjectImpl for OfflineBanner {
32        fn constructed(&self) {
33            self.parent_constructed();
34
35            self.obj().set_child(Some(&self.banner));
36            self.update();
37        }
38
39        fn dispose(&self) {
40            if let Some(handler) = self.monitor_handler.take() {
41                gio::NetworkMonitor::default().disconnect(handler);
42            }
43        }
44    }
45
46    impl WidgetImpl for OfflineBanner {}
47    impl BinImpl for OfflineBanner {}
48
49    impl OfflineBanner {
50        /// Set the session to check.
51        fn set_session(&self, session: Option<&Session>) {
52            if self.session.obj().as_ref() == session {
53                return;
54            }
55
56            if let Some(handler) = self.monitor_handler.take() {
57                gio::NetworkMonitor::default().disconnect(handler);
58            }
59            self.session.disconnect_signals();
60
61            if let Some(session) = session {
62                let offline_handler = session.connect_is_offline_notify(clone!(
63                    #[weak(rename_to = imp)]
64                    self,
65                    move |_| {
66                        imp.update();
67                    }
68                ));
69
70                self.session.set(session, vec![offline_handler]);
71            }
72
73            self.update();
74        }
75
76        /// Make sure that we watch the connection, if there is no session.
77        fn ensure_connection_watched(&self) {
78            if self.session.obj().is_some() {
79                // No need to watch.
80                return;
81            }
82
83            if self.monitor_handler.borrow().is_some() {
84                // Already watching.
85                return;
86            }
87
88            let monitor = gio::NetworkMonitor::default();
89            let monitor_handler = monitor.connect_network_changed(clone!(
90                #[weak(rename_to = imp)]
91                self,
92                move |_, _| {
93                    imp.update();
94                }
95            ));
96            self.monitor_handler.replace(Some(monitor_handler));
97        }
98
99        /// Update this banner.
100        fn update(&self) {
101            if let Some(session) = self.session.obj() {
102                self.banner.set_title(&gettext("Offline"));
103                self.banner.set_revealed(session.is_offline());
104            } else {
105                self.ensure_connection_watched();
106                let monitor = gio::NetworkMonitor::default();
107
108                if !monitor.is_network_available() {
109                    self.banner.set_title(&gettext("No network connection"));
110                    self.banner.set_revealed(true);
111                } else if monitor.connectivity() != gio::NetworkConnectivity::Full {
112                    self.banner.set_title(&gettext("No Internet connection"));
113                    self.banner.set_revealed(true);
114                } else {
115                    self.banner.set_revealed(false);
116                }
117            }
118        }
119    }
120}
121
122glib::wrapper! {
123    /// Banner displaying the state of the connectivity.
124    ///
125    /// If a session is set, it watches the offline status of the session, otherwise it watches the
126    /// network connection with [`gio::NetworkMonitor`].
127    pub struct OfflineBanner(ObjectSubclass<imp::OfflineBanner>)
128        @extends gtk::Widget, adw::Bin,
129        @implements gtk::Accessible, gtk::Buildable, gtk::ConstraintTarget;
130}
131
132impl OfflineBanner {
133    pub fn new() -> Self {
134        glib::Object::new()
135    }
136}
fractal/components/offline_banner.rs

fractal/components/
offline_banner.rs
