refactor: move all lists into their own module

src/components/lists/single/radio.rs

@@ -0,0 +1,158 @@
+use crate::common::ValueType;
+use crate::components::utils::create_unique_id;
+use leptos::prelude::*;
+use std::collections::HashMap;
+use crate::components::{use_validation_context, InputState, ValidationState};
+
+#[component]
+pub fn Radio(
+    #[prop()] checked: Signal<bool>,
+    #[prop(into)] on_change: Callback<(), ()>,
+    #[prop(into)] value: Signal<String>,
+    #[prop(into)] name: Signal<String>,
+    #[prop(optional, into)] disabled: Signal<bool>,
+) -> impl IntoView {
+    let id = create_unique_id(&name.get_untracked(), &value.get_untracked());
+
+    view! {
+        <label for=id class="flex items-center">
+            <input
+                // Using the "peer" class links this input with the div "peer" at the same level.
+                // By using the "peer-checked" selector this div can toggle states based on this
+                // input's state (checked/unchecked)
+                class="
+                relative peer shrink-0
+                hidden"
+                type="radio"
+                id=id.clone()
+                name=name
+                on:change=move |_| on_change.run(())
+                prop:checked=checked
+                disabled=disabled
+            />
+            // This div displays the box for the checkbox, and applies some styling to the child
+            // span element.
+            <div class="relative inline-block h-5 w-5 m-1 mr-2 rounded-full border border-gray-300 bg-white
+            transition-bg duration-200 peer-checked:bg-red-700 peer-checked:border-red-700
+            [&>span]:opacity-0 peer-checked:[&>span]:opacity-100
+            peer-disabled:bg-gray-600/33 peer-disabled:border-gray-600
+            peer-disabled:peer-checked:bg-gray-600">
+                // This span is the check icon. It is centered within the div and has a border on the bottom
+                // and right sides, which is then rotated to appear like a checkmark.
+                <span class="absolute left-1/2 top-1/2 block h-2.5 w-2.5 -translate-x-1/2 -translate-y-1/2
+                rotate-45 transform border-3 border-3 rounded-full bg-white
+                border-white transition-opacity duration-150"></span>
+            </div>
+            <span>{value.clone()}</span>
+        </label>
+    }
+}
+
+fn validate(value: String, required: bool) -> ValidationState {
+    if required && value.is_empty() {
+        ValidationState::Invalid("This field is required".into())
+    } else {
+        ValidationState::Valid
+    }
+}
+
+#[component]
+pub fn RadioList(
+    #[prop(into)] data_member: Signal<String>,
+    #[prop()] data_map: RwSignal<HashMap<String, ValueType>>,
+    #[prop()] items: Vec<String>,
+    #[prop(optional, into)] disabled: Signal<bool>,
+    #[prop(optional, into)] label: String,
+    #[prop(optional, into)] required: Signal<bool>,
+) -> impl IntoView {
+    //#region Value Logic
+
+    // Store a single signal that is the currently selected value. We can only have one selected
+    // value, so there's no list needed. The default selected value is whatever the map has selected
+    // already, or nothing.
+    let default_value = match data_map.get_untracked().get(&data_member.get_untracked()) {
+        Some(ValueType::String(Some(value))) => value.clone(),
+        _ => String::new()
+    };
+
+    let selected_value = RwSignal::new(default_value);
+
+    // When the selected value changes, update the data map at the correct location
+    Effect::new(move || {
+        data_map.update(|map| {
+            map.insert(data_member.get(), ValueType::String(Some(selected_value.get())));
+        });
+    });
+
+    //#endregion
+    //#region Validation Logic
+
+    let validation_context = use_validation_context()
+        .expect("Could not find FormValidationRegistry context");
+
+    let error = RwSignal::new(validate(selected_value.get_untracked(), required.get_untracked()));
+    let dirty = RwSignal::new(false);
+    let show_errors = Signal::derive(move || {
+        dirty.get() && matches!(error.get(), ValidationState::Invalid(_))
+    });
+
+    let input_state = InputState::new(
+        data_member.get_untracked(),
+        error.clone(),
+        dirty.clone()
+    );
+
+    validation_context.validators.update(|list| list.push(RwSignal::new(input_state)));
+
+    //#endregion
+    //#region Render Logic
+
+    view! {
+        <div class="flex flex-col flex-1">
+            <div class="m-1.5 mt-0 mb-0">
+                <span class="font-bold">{label}</span>
+                {items
+                    .into_iter()
+                    .map(|item| {
+                        let item = RwSignal::new(item);
+
+                        let checked_signal = Signal::derive(move || {
+                            selected_value.get() == item.get()
+                        });
+
+                        let on_change = move || {
+                            // on_change only runs when the radio button is checked, not when unchecked.
+                            // Change the selected value to the new one.
+                            selected_value.set(item.get());
+                            error.set(validate(selected_value.get_untracked(), required.get_untracked()));
+                            dirty.set(true);
+                        };
+
+                        view! {
+                            <Radio
+                                checked=checked_signal
+                                on_change=on_change
+                                // The actual selected values are tracked by this element, not by the checkboxes themselves.
+                                value=item
+                                name=data_member
+                                disabled=disabled
+                            />
+                        }
+                    })
+                    .collect::<Vec<_>>()}
+            </div>
+            <Show when=move || show_errors.get()>
+                <div class="text-red-600 text-sm mr-1.5 ml-1.5">
+                    {move || {
+                        match error.get() {
+                            ValidationState::Invalid(msg) => msg,
+                            _ => "There is no error - should not see this message.".to_string()
+                        }
+                    }}
+                </div>
+            </Show>
+        </div>
+    }
+
+    //#endregion
+}