Added chain previous event functionality

.gitignore

@@ -9,3 +9,6 @@
 
 # These are backup files generated by rustfmt
 **/*.rs.bk
+
+# Logs may be created here if $XDG_CONFIG_HOME is not set
+/logs/

src/main.rs

@@ -59,6 +59,7 @@ fn load_log(ui_weak: Weak<AppWindow>, log: Arc<Mutex<Log>>) {
     let model: ModelRc<TimelineEvent> = Rc::new(VecModel::from(events)).into();
     ui.set_record_events(model);
     ui.set_in_progress(in_progress);
+    ui.invoke_get_previous_event();
 }
 
 fn load_colors(ui_weak: Weak<AppWindow>, config: Arc<Config>) {
@@ -229,6 +230,25 @@ fn main() -> Result<(), Box<dyn Error>> {
             ui.invoke_start_new_event(event_name);
         }
     });
+    
+    ui.on_get_previous_event({
+        let ui_weak = ui.as_weak();
+        let log = writing_log.clone();
+        move || {
+            let ui = ui_weak.unwrap();
+            let prev_event_name = {
+                let log_guard = log.lock().expect("Log shouldn't be used twice");
+                let prev_index = log_guard.events.len() - 2;
+                log_guard.events
+                    .get(prev_index)
+                    .expect("Index is already checked")
+                    .name
+                    .clone()
+            };
+            println!("{}", prev_event_name.as_str());
+            ui.set_previous_event_name(prev_event_name.to_shared_string());
+        }
+    });
 
     ui.on_new_day_started({
         let ui_weak = ui.as_weak();
@@ -272,7 +292,10 @@ fn main() -> Result<(), Box<dyn Error>> {
         }
     });
 
+    ui.invoke_get_previous_event();
+
     ui.run()?;
 
+
     Ok(())
 }

ui/app-window.slint

@@ -9,6 +9,7 @@ export component AppWindow inherits Window {
     callback stop-event <=> record.stop-event;
     callback chain-event <=> record.chain-event;
     callback new-day-started <=> record.new-day-started;
+    callback get-previous-event <=> record.get-previous-event;
     callback update-record-offset(int);
     callback save-log;
 
@@ -24,6 +25,7 @@ export component AppWindow inherits Window {
     in-out property record-offset <=> record.offset;
     in-out property record-visible-time <=> record.visible-time;
     in-out property in-progress <=> record.in-progress;
+    in property previous-event-name <=> record.previous-event-name;
     
     in-out property review-events <=> review.events;
     in-out property review-offset <=> review.offset;

ui/record.slint

@@ -7,6 +7,7 @@ export component RecordWidget inherits VerticalBox {
     callback start-new-event(string);
     callback chain-event(string);
     callback stop-event;
+    callback get-previous-event();
     in-out property visible-time <=> tl.visible-time;
     in-out property updating <=> tl.updating;
     in-out property offset <=> tl.offset;
@@ -14,6 +15,7 @@ export component RecordWidget inherits VerticalBox {
     in property<[string]> combo-spans: [];
     in-out property<bool> in-progress: false;
     property<string> event-name: "";
+    in property<string> previous-event-name: "";
     property<bool> minimized: false;
     property<int> combo-index: 0;
     tl := Timeline {
@@ -31,7 +33,7 @@ export component RecordWidget inherits VerticalBox {
             text: event-name;
             font-size: 24px;
             horizontal-alignment: center;
-            colspan: 2;
+            colspan: 6;
             row: 0;
             edited(text) => {
                 event-name = text;
@@ -40,11 +42,13 @@ export component RecordWidget inherits VerticalBox {
         Button {
             text: in-progress ? "Stop" : "Start";
             row: 1;
+            colspan: 2;
             clicked => {
                 if in-progress {
                     root.stop-event();
                 } else {
                     root.start-new-event(event-name);
+                    root.get-previous-event();
                 }
                 in-progress = !in-progress;
             }
@@ -52,23 +56,39 @@ export component RecordWidget inherits VerticalBox {
         Button {
             text: "Chain";
             enabled: in-progress;
-            col: 1;
+            col: 3;
             row: 1;
+            colspan: 2;
             clicked => {
                 root.chain-event(event-name);
+                root.get-previous-event();
+            }
+        }
+        Button {
+            text: previous-event-name == "" ? "Chain previous event (None)" : "Chain previous event (\{previous-event-name})";
+            enabled: in-progress && previous-event-name != "";
+            col: 5;
+            row: 1;
+            colspan: 2;
+            clicked => {
+                event-name = previous-event-name;
+                root.chain-event(event-name);
+                root.get-previous-event();
             }
         }
         Text {
             text: "Span:";
             font-size: 24px;
             row: 2;
+            colspan: 3;
             horizontal-alignment: right;
         }
         ComboBox {
             model: combo-spans;
             current-index: combo-index;
             row: 2;
-            col: 1;
+            col: 3;
+            colspan: 3;
             selected(current-value) => {
                 root.update-visible-time(current-value);
                 combo-index = self.current-index;