Start setting up date range widgets

fitnesstrax/app/src/components/date_field.rs

@@ -14,62 +14,100 @@ General Public License for more details.
 You should have received a copy of the GNU General Public License along with FitnessTrax. If not, see <https://www.gnu.org/licenses/>.
 */
 
-use crate::types::ParseError;
-use chrono::Datelike;
-use gtk::prelude::*;
+use crate::{components::TextEntry, types::ParseError};
+use chrono::{Datelike, Local};
+use glib::Object;
+use gtk::{prelude::*, subclass::prelude::*};
 use std::{cell::RefCell, rc::Rc};
 
-#[derive(Clone)]
-pub struct DateField {
-    value: Rc<RefCell<chrono::NaiveDate>>,
-    buffer: gtk::TextBuffer,
-    widget: gtk::TextView,
+#[derive(Clone, Debug)]
+enum Part {
+    Year,
+    Month,
+    Day,
 }
 
-impl DateField {
-    pub fn new(date: chrono::NaiveDate) -> Self {
-        let buffer = gtk::TextBuffer::new(None);
-        let tag = buffer.create_tag(
-            Some("placeholder"),
-            &[("foreground", &String::from("grey"))],
+pub struct DateFieldPrivate {
+    value: Rc<RefCell<chrono::NaiveDate>>,
+    year: TextEntry<i32>,
+    month: TextEntry<u32>,
+    day: TextEntry<u32>,
+}
+
+#[glib::object_subclass]
+impl ObjectSubclass for DateFieldPrivate {
+    const NAME: &'static str = "DateField";
+    type Type = DateField;
+    type ParentType = gtk::Box;
+
+    fn new() -> Self {
+        let date = Local::now().date_naive();
+        let year = TextEntry::new(
+            "year",
+            Some(date.year()),
+            |v| format!("{}", v),
+            |v| v.parse::<i32>().map_err(|_| ParseError),
+            |_| {},
+        );
+        let month = TextEntry::new(
+            "month",
+            Some(date.month()),
+            |v| format!("{}", v),
+            |v| v.parse::<u32>().map_err(|_| ParseError),
+            |_| {},
+        );
+        let day = TextEntry::new(
+            "day",
+            Some(date.day()),
+            |v| format!("{}", v),
+            |v| v.parse::<u32>().map_err(|_| ParseError),
+            |_| {},
         );
 
-        buffer.set_text("regular text placeholder text");
-        let (start, end) = buffer.bounds();
-        let mut placeholder_start = start.clone();
-        placeholder_start.forward_chars(13);
+        Self {
+            value: Rc::new(RefCell::new(date.clone())),
+            year,
+            month,
+            day,
+        }
+    }
+}
 
-        let placeholder_markup = buffer.tag_table().lookup("placeholder").unwrap();
-        buffer.apply_tag(&placeholder_markup, &placeholder_start, &end);
+impl ObjectImpl for DateFieldPrivate {}
+impl WidgetImpl for DateFieldPrivate {}
+impl BoxImpl for DateFieldPrivate {}
 
-        let widget = gtk::TextView::builder()
-            .buffer(&buffer)
-            .editable(true)
-            .can_focus(true)
-            .height_request(50)
-            .width_request(200)
-            .build();
+glib::wrapper! {
+    pub struct DateField(ObjectSubclass<DateFieldPrivate>) @extends gtk::Box, gtk::Widget;
+}
 
-        let s = Self {
-            value: Rc::new(RefCell::new(date)),
-            buffer,
-            widget,
-        };
+/* Render a date in the format 2006 Jan 01. The entire date is editable. When the user moves to one part of the date, it will be erased and replaced with a grey placeholder.
+ */
+impl DateField {
+    pub fn new(date: chrono::NaiveDate) -> Self {
+        let s: Self = Object::builder().build();
 
-        s.widget.buffer().connect_text_notify({
-            let s = s.clone();
-            move |buffer| s.on_update(buffer)
-        });
+        println!("{}", date);
+
+        s.append(&s.imp().year.widget());
+        s.append(&s.imp().month.widget());
+        s.append(&s.imp().day.widget());
+
+        s.imp().year.set_value(Some(date.year()));
+        s.imp().month.set_value(Some(date.month()));
+        s.imp().day.set_value(Some(date.day()));
+
+        *s.imp().value.borrow_mut() = date;
 
         s
     }
-
-    pub fn widget(&self) -> gtk::Widget {
-        self.widget.clone().upcast::<gtk::Widget>()
 }
 
-    fn on_update(&self, buffer: &gtk::TextBuffer) {
-        let (start, end) = buffer.bounds();
-        println!("[on_update] {}", buffer.text(&start, &end, true));
-    }
+/* As soon as the field gets focus, highlight the first element
+ */
+
+#[cfg(test)]
+mod test {
+    use super::*;
+    use crate::gtk_init::gtk_init;
 }

fitnesstrax/app/src/components/text_entry.rs

@@ -28,6 +28,7 @@ pub struct TextEntry<T: Clone + std::fmt::Debug> {
     value: Rc<RefCell<Option<T>>>,
 
     widget: gtk::Entry,
+    renderer: Rc<dyn Fn(&T) -> String>,
     parser: Rc<Parser<T>>,
     on_update: Rc<OnUpdate<T>>,
 }
@@ -64,6 +65,7 @@ impl<T: Clone + std::fmt::Debug + 'static> TextEntry<T> {
         let s = Self {
             value: Rc::new(RefCell::new(value)),
             widget,
+            renderer: Rc::new(renderer),
             parser: Rc::new(parser),
             on_update: Rc::new(on_update),
         };
@@ -76,6 +78,13 @@ impl<T: Clone + std::fmt::Debug + 'static> TextEntry<T> {
         s
     }
 
+    pub fn set_value(&self, val: Option<T>) {
+        if let Some(ref v) = val {
+            self.widget.set_text(&(self.renderer)(v));
+        }
+        *self.value.borrow_mut() = val;
+    }
+
     fn handle_text_change(&self, buffer: &gtk::EntryBuffer) {
         if buffer.text().is_empty() {
             *self.value.borrow_mut() = None;

fitnesstrax/app/src/views/historical_view.rs

@@ -112,9 +112,9 @@ impl HistoricalView {
         let date_row = gtk::Box::builder()
             .orientation(gtk::Orientation::Horizontal)
             .build();
-        date_row.append(&DateField::new(interval.start).widget());
+        date_row.append(&DateField::new(interval.start));
         date_row.append(&gtk::Label::new(Some("to")));
-        date_row.append(&DateField::new(interval.end).widget());
+        date_row.append(&DateField::new(interval.end));
 
         let quick_picker = gtk::Box::builder()
             .orientation(gtk::Orientation::Horizontal)