feat: implement checkboxlist component

src/components/checkboxes.rs

@@ -1,19 +1,91 @@
-use leptos::prelude::*;
+use leptos::{leptos_dom::logging::console_log, prelude::*};
 
 #[component]
 pub fn Checkbox(
-    #[prop()] checked: ReadSignal<bool>,
-    #[prop()] on_change: Callback<bool>,
-    #[prop()] label: String,
-    #[prop()] id: String
+    #[prop()] checked: Signal<bool>,
+    #[prop(into)] on_change: Callback<(), ()>,
+    #[prop(into)] value: String
 ) -> impl IntoView {
-    let label_id = id.clone();
     view! {
-        <label for=label_id>
+        <label for=value
+            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="checkbox"
-                id={id}
+                id={value.clone()}
+                on:change = move |_| on_change.run(())
+                prop:checked = checked
             />
+            // 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 rounded-sm border border-gray-300 bg-white
+                    transition-bg duration-150 peer-checked:bg-red-700 peer-checked:border-red-700
+                    [&>span]:opacity-0 peer-checked:[&>span]:opacity-100"
+            >  
+                // 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-3 w-1.5 -translate-x-1/2 -translate-y-1/2
+                        rotate-45 transform border-b-3 border-r-3
+                        border-white transition-opacity duration-150"
+                ></span>
+            </div>
+            <span>{value.clone()}</span>
         </label>
     }
 }
+
+#[component]
+pub fn CheckboxList(
+    #[prop(default = RwSignal::new(vec![]))] selected: RwSignal<Vec<String>>,
+    #[prop()] items: Vec<String>
+) -> impl IntoView {
+    view! {
+        // Checkbox elements go in here. Each one will have a derived signal
+        // that checks if the name/value of that checkbox is in the selected items
+        // vec. If so, display as selected. If not, clear that checkbox.
+
+        // Somehow create a derived signal??
+
+        {
+            items.into_iter().map(|item| {
+                let is_checked = {
+                    let item_name = item.clone();
+                    move || {
+                        // Check if this checkbox should be selected
+                        selected.get().contains(&item_name)
+                    }
+                };
+
+                let checked_signal = Signal::derive(is_checked);
+
+                view! {
+                    <Checkbox
+                        checked = checked_signal
+                        on_change = {
+                            // Clone this value to avoid moving it into the closure
+                            let item_name = item.clone();
+                            move || {
+                                selected.update(|list| {
+                                    // Check if the list contains this element. If so, remove it. If not, add it.
+                                    if let Some(index) = list.iter().position(|val| *val == item_name) {
+                                        list.remove(index);
+                                    } else {
+                                        list.push(item_name.clone());
+                                    }
+                                });
+                            }
+                        }
+                        // The actual selected values are tracked by this element, not by the checkboxes themselves.
+                        value = item.clone() />
+                }
+            }).collect::<Vec<_>>()
+        }
+    }
+}