Create an EditView "component"

This is a super tiny data structure that covers an edit mode, a view
mode, and an unconfigured mode. It's mostly a container so that views
don't have to preserve everything directly.

fitnesstrax/app/src/components/day.rs

@@ -16,7 +16,7 @@ You should have received a copy of the GNU General Public License along with Fit
 
 // use chrono::NaiveDate;
 // use ft_core::TraxRecord;
-use crate::components::{ParseError, TextEntry};
+use crate::components::{EditView, ParseError, TextEntry};
 use chrono::{Local, NaiveDate};
 use dimensioned::si;
 use emseries::Record;
@@ -221,49 +221,21 @@ impl DayDetail {
     }
 }
 
-#[derive(Clone, Copy, PartialEq)]
-enum WeightViewMode {
-    View,
-    Edit,
-}
-
 pub struct WeightViewPrivate {
     date: RefCell<NaiveDate>,
     record: RefCell<Option<Weight>>,
-    view: RefCell<gtk::Label>,
-    edit: RefCell<TextEntry<si::Kilogram<f64>>>,
-    current: RefCell<gtk::Widget>,
-    mode: RefCell<WeightViewMode>,
 
-    // If I create a swappable component and don't make it a true GTK component, the way
-    // TextEntry<T> ended up not a true GTK component, on_edit_finished will not need to be a
-    // RefCell.
+    widget: RefCell<EditView<gtk::Label, TextEntry<si::Kilogram<f64>>>>,
+
     on_edit_finished: RefCell<Box<dyn Fn(si::Kilogram<f64>)>>,
 }
 
 impl Default for WeightViewPrivate {
     fn default() -> Self {
-        let view = gtk::Label::builder()
-            .css_classes(["card", "weight-view"])
-            .halign(gtk::Align::Start)
-            .can_focus(true)
-            .build();
-        let edit = TextEntry::<si::Kilogram<f64>>::new(
-            "weight",
-            None,
-            |w: &si::Kilogram<f64>| w.to_string(),
-            |w: &str| w.parse::<f64>().map(|w| w * si::KG).map_err(|_| ParseError),
-        );
-
-        let current = view.clone();
-
         Self {
             date: RefCell::new(Local::now().date_naive()),
             record: RefCell::new(None),
-            view: RefCell::new(view),
-            edit: RefCell::new(edit),
-            current: RefCell::new(current.upcast()),
-            mode: RefCell::new(WeightViewMode::View),
+            widget: RefCell::new(EditView::Unconfigured),
             on_edit_finished: RefCell::new(Box::new(|_| {})),
         }
     }
@@ -301,20 +273,26 @@ impl WeightView {
         *s.imp().record.borrow_mut() = weight;
         s.view();
 
+        s
+    }
+
+    fn view(&self) {
+        let view = gtk::Label::builder()
+            .css_classes(["card", "weight-view"])
+            .halign(gtk::Align::Start)
+            .can_focus(true)
+            .build();
+
         let view_click_controller = gtk::GestureClick::new();
         view_click_controller.connect_released({
-            let s = s.clone();
+            let s = self.clone();
             move |_, _, _, _| {
                 s.edit();
             }
         });
 
-        s.imp().view.borrow().add_controller(view_click_controller);
-        s
-    }
+        view.add_controller(view_click_controller);
 
-    fn view(&self) {
-        let view = self.imp().view.borrow();
         match *self.imp().record.borrow() {
             Some(ref record) => {
                 view.remove_css_class("dim_label");
@@ -325,69 +303,83 @@ impl WeightView {
                 view.set_label("No weight recorded");
             }
         }
-        *self.imp().mode.borrow_mut() = WeightViewMode::View;
-        self.swap(view.clone().upcast());
+
+        self.swap(EditView::View(view));
     }
 
     fn edit(&self) {
-        let edit = self.imp().edit.borrow();
+        let edit = TextEntry::<si::Kilogram<f64>>::new(
+            "weight",
+            None,
+            |val: &si::Kilogram<f64>| val.to_string(),
+            |v: &str| v.parse::<f64>().map(|w| w * si::KG).map_err(|_| ParseError),
+        );
+
         match *self.imp().record.borrow() {
             Some(ref record) => edit.set_value(Some(record.weight)),
             None => edit.set_value(None),
         }
-        *self.imp().mode.borrow_mut() = WeightViewMode::Edit;
-        self.swap(edit.widget());
+
+        self.swap(EditView::Edit(edit.clone()));
         edit.grab_focus();
     }
 
-    fn swap(&self, new_view: gtk::Widget) {
-        let mut current = self.imp().current.borrow_mut();
-        self.remove(&*current);
-        self.append(&new_view);
-        *current = new_view;
+    fn swap(&self, new_view: EditView<gtk::Label, TextEntry<si::Kilogram<f64>>>) {
+        let mut widget = self.imp().widget.borrow_mut();
+        match *widget {
+            EditView::Unconfigured => {}
+            EditView::View(ref view) => self.remove(view),
+            EditView::Edit(ref editor) => self.remove(&editor.widget()),
+        }
+
+        match new_view {
+            EditView::Unconfigured => {}
+            EditView::View(ref view) => self.append(view),
+            EditView::Edit(ref editor) => self.append(&editor.widget()),
+        }
+        *widget = new_view;
     }
 
     fn blur(&self) {
-        if *self.imp().mode.borrow() == WeightViewMode::Edit {
-            println!("on_blur");
-            let weight = self.imp().edit.borrow().value();
+        match *self.imp().widget.borrow() {
+            EditView::Unconfigured => {}
+            EditView::View(_) => {}
+            EditView::Edit(ref editor) => {
+                let weight = editor.value();
+                // This has really turned into rubbish
+                // on_edit_finished needs to accept a full record now.
+                // needs to be possible to delete a record if the value is None
+                // it's hard to be sure whether I need the full record object or if I need to update
+                // it. I probably don't. I think I need to borrow it and call on_edit_finished with an
+                // updated version of it.
+                // on_edit_finished still doesn't have a way to support a delete operation
+                let record = match (self.imp().record.borrow().clone(), weight) {
+                    // update an existing record
+                    (Some(record), Some(weight)) => Some(Weight {
+                        date: record.date,
+                        weight,
+                    }),
 
-            println!("new weight: {:?}", weight);
+                    // create a new record
+                    (None, Some(weight)) => Some(Weight {
+                        date: self.imp().date.borrow().clone(),
+                        weight,
+                    }),
 
-            // This has really turned into rubbish
-            // on_edit_finished needs to accept a full record now.
-            // needs to be possible to delete a record if the value is None
-            // it's hard to be sure whether I need the full record object or if I need to update
-            // it. I probably don't. I think I need to borrow it and call on_edit_finished with an
-            // updated version of it.
-            // on_edit_finished still doesn't have a way to support a delete operation
-            let record = match (self.imp().record.borrow().clone(), weight) {
-                // update an existing record
-                (Some(record), Some(weight)) => Some(Weight {
-                    date: record.date,
-                    weight,
-                }),
+                    // do nothing or delete an existing record
+                    (_, None) => None,
+                };
 
-                // create a new record
-                (None, Some(weight)) => Some(Weight {
-                    date: self.imp().date.borrow().clone(),
-                    weight,
-                }),
-
-                // do nothing or delete an existing record
-                (_, None) => None,
-            };
-
-            println!("updated record: {:?}", record);
-
-            match record {
-                Some(record) => {
-                    self.imp().on_edit_finished.borrow()(record.weight);
-                    *self.imp().record.borrow_mut() = Some(record);
+                match record {
+                    Some(record) => {
+                        self.imp().on_edit_finished.borrow()(record.weight);
+                        *self.imp().record.borrow_mut() = Some(record);
+                    }
+                    None => {}
                 }
-                None => {}
             }
         }
+
         self.view();
     }
 }

fitnesstrax/app/src/components/edit_view.rs

@@ -0,0 +1,22 @@
+/*
+Copyright 2023, Savanni D'Gerinel <savanni@luminescent-dreams.com>
+
+This file is part of FitnessTrax.
+
+FitnessTrax is free software: you can redistribute it and/or modify it under the terms of the GNU
+General Public License as published by the Free Software Foundation, either version 3 of the
+License, or (at your option) any later version.
+
+FitnessTrax 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
+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/>.
+*/
+
+#[derive(Clone)]
+pub enum EditView<View, Edit> {
+    Unconfigured,
+    View(View),
+    Edit(Edit),
+}

fitnesstrax/app/src/components/mod.rs

@@ -17,6 +17,9 @@ You should have received a copy of the GNU General Public License along with Fit
 mod day;
 pub use day::{DayDetail, DaySummary};
 
+mod edit_view;
+pub use edit_view::EditView;
+
 mod text_entry;
 pub use text_entry::{ParseError, TextEntry};