From f6d534220ecbefb084690c4468e62c520653bf36 Mon Sep 17 00:00:00 2001
From: luoxiao <luoxiaozero@163.com>
Date: Thu, 27 Jun 2024 17:31:52 +0800
Subject: [PATCH] feat: Combobox adds clearable prop

---
 demo_markdown/docs/combobox/mod.md | 17 ++++++
 thaw/src/combobox/combobox.css     |  4 +-
 thaw/src/combobox/combobox.rs      | 88 +++++++++++++++++++++++++++---
 3 files changed, 101 insertions(+), 8 deletions(-)

diff --git a/demo_markdown/docs/combobox/mod.md b/demo_markdown/docs/combobox/mod.md
index cef4145..1578530 100644
--- a/demo_markdown/docs/combobox/mod.md
+++ b/demo_markdown/docs/combobox/mod.md
@@ -15,6 +15,23 @@ view! {
 }
 ```
 
+### Clearable
+
+```rust demo
+let value = RwSignal::new(vec![]);
+
+view! {
+    <Combobox value multiselect=true clearable=true>
+        <ComboboxOption key="cat">
+            "Cat"
+        </ComboboxOption>
+        <ComboboxOption key="dog">
+            "Dog"
+        </ComboboxOption>
+    </Combobox>
+}
+```
+
 ### Multiselect
 
 ```rust demo
diff --git a/thaw/src/combobox/combobox.css b/thaw/src/combobox/combobox.css
index 5801cfe..3fd11e9 100644
--- a/thaw/src/combobox/combobox.css
+++ b/thaw/src/combobox/combobox.css
@@ -78,6 +78,7 @@
     outline-style: none;
 }
 
+.thaw-combobox__clear-icon,
 .thaw-combobox__expand-icon {
     display: block;
     margin-left: var(--spacingHorizontalXXS);
@@ -152,7 +153,6 @@
 
 .thaw-combobox-option__check-icon {
     visibility: hidden;
-
     margin-left: calc(var(--spacingHorizontalXXS) * -1);
     margin-right: var(--spacingHorizontalXXS);
     font-size: var(--fontSizeBase400);
@@ -162,6 +162,8 @@
     visibility: visible;
 }
 
+.thaw-combobox__clear-icon > svg,
+.thaw-combobox__expand-icon > svg,
 .thaw-combobox-option__check-icon--multiselect > svg,
 .thaw-combobox-option__check-icon > svg {
     display: block;
diff --git a/thaw/src/combobox/combobox.rs b/thaw/src/combobox/combobox.rs
index e8fc16b..75151e3 100644
--- a/thaw/src/combobox/combobox.rs
+++ b/thaw/src/combobox/combobox.rs
@@ -1,12 +1,13 @@
 use crate::ConfigInjection;
 use leptos::*;
 use thaw_components::{Binder, CSSTransition, Follower, FollowerPlacement, FollowerWidth};
-use thaw_utils::{mount_style, Model};
+use thaw_utils::{add_event_listener, mount_style, Model};
 
 #[component]
 pub fn Combobox(
     #[prop(optional, into)] value: Model<Vec<String>>,
     #[prop(optional)] multiselect: bool,
+    #[prop(optional)] clearable: bool,
     children: Children,
 ) -> impl IntoView {
     mount_style("combobox", include_str!("./combobox.css"));
@@ -15,13 +16,63 @@ pub fn Combobox(
     let listbox_ref = NodeRef::<html::Div>::new();
     let is_show_listbox = RwSignal::new(false);
 
+    let clear_icon_ref = NodeRef::<html::Span>::new();
+    let is_show_clear_icon = Memo::new(move |_| {
+        if clearable {
+            value.with(|value| !value.is_empty())
+        } else {
+            false
+        }
+    });
+    if clearable {
+        clear_icon_ref.on_load(move |clear_icon_el| {
+            let handler = add_event_listener(clear_icon_el.into_any(), ev::click, move |e| {
+                e.stop_propagation();
+                value.set(vec![]);
+            });
+            on_cleanup(move || handler.remove());
+        });
+    }
+
+    #[cfg(any(feature = "csr", feature = "hydrate"))]
+    {
+        let handle = window_event_listener(ev::click, move |ev| {
+            use leptos::wasm_bindgen::__rt::IntoJsResult;
+            if !is_show_listbox.get_untracked() {
+                return;
+            }
+            let el = ev.target();
+            let mut el: Option<web_sys::Element> =
+                el.into_js_result().map_or(None, |el| Some(el.into()));
+            let body = document().body().unwrap();
+            if let Some(listbox_el) = listbox_ref.get_untracked() {
+                if let Some(trigger_el) = trigger_ref.get_untracked() {
+                    while let Some(current_el) = el {
+                        if current_el == *body {
+                            break;
+                        };
+                        if current_el == ***listbox_el {
+                            return;
+                        }
+                        if current_el == ***trigger_el {
+                            return;
+                        }
+                        el = current_el.parent_element();
+                    }
+                }
+            }
+            is_show_listbox.set(false);
+        });
+        on_cleanup(move || handle.remove());
+    }
+
     view! {
         <Binder target_ref=trigger_ref>
             <div
                 class="thaw-combobox"
                 ref=trigger_ref
                 on:click=move |_| {
-                    is_show_listbox.set(true);
+                    is_show_listbox.update(|show| *show = !*show);
                 }
             >
                 <input
@@ -29,21 +80,42 @@ pub fn Combobox(
                     aria-expanded="true"
                     role="combobox"
                     class="thaw-combobox__input"
+                    // #TODO
+                    readonly=true
                     prop:value=move || {
                         value.with(|value| {
                             if multiselect {
-                                None
+                                String::new()
                             } else {
-                                value.first().cloned()
+                                value.first().cloned().unwrap_or_default()
                             }
                         })
                     }
                 />
+                {
+                    if clearable {
+                        view! {
+                            <span
+                                aria-hidden="true"
+                                class="thaw-combobox__clear-icon"
+                                style=move || (!is_show_clear_icon.get()).then(|| "display: none")
+                                ref=clear_icon_ref
+                            >
+                                <svg fill="currentColor" aria-hidden="true" width="1em" height="1em" viewBox="0 0 20 20">
+                                    <path d="m4.09 4.22.06-.07a.5.5 0 0 1 .63-.06l.07.06L10 9.29l5.15-5.14a.5.5 0 0 1 .63-.06l.07.06c.18.17.2.44.06.63l-.06.07L10.71 10l5.14 5.15c.18.17.2.44.06.63l-.06.07a.5.5 0 0 1-.63.06l-.07-.06L10 10.71l-5.15 5.14a.5.5 0 0 1-.63.06l-.07-.06a.5.5 0 0 1-.06-.63l.06-.07L9.29 10 4.15 4.85a.5.5 0 0 1-.06-.63l.06-.07-.06.07Z" fill="currentColor"></path>
+                                </svg>
+                            </span>
+                        }.into()
+                    } else {
+                        None
+                    }
+                }
                 <span
                     aria-expanded="true"
                     role="button"
                     aria-label="Open"
                     class="thaw-combobox__expand-icon"
+                    style=move || is_show_clear_icon.get().then(|| "display: none")
                 >
                     <svg fill="currentColor" aria-hidden="true" width="1em" height="1em" viewBox="0 0 20 20">
                         <path d="M15.85 7.65c.2.2.2.5 0 .7l-5.46 5.49a.55.55 0 0 1-.78 0L4.15 8.35a.5.5 0 1 1 .7-.7L10 12.8l5.15-5.16c.2-.2.5-.2.7 0Z" fill="currentColor">
@@ -57,7 +129,7 @@ pub fn Combobox(
                 placement=FollowerPlacement::BottomStart
                 width=FollowerWidth::MinTarget
             >
-                <Provider value=ComboboxInjection{value, multiselect}>
+                <Provider value=ComboboxInjection{value, multiselect, is_show_listbox}>
                     <CSSTransition
                         node_ref=listbox_ref
                         name="fade-in-scale-up-transition"
@@ -84,6 +156,7 @@ pub fn Combobox(
 #[derive(Clone, Copy)]
 pub(crate) struct ComboboxInjection {
     value: Model<Vec<String>>,
+    is_show_listbox: RwSignal<bool>,
     pub multiselect: bool,
 }
 
@@ -103,10 +176,11 @@ impl ComboboxInjection {
                     value.remove(index);
                     return;
                 }
+                value.push(key.clone());
             } else {
-                value.clear();
+                *value = vec![key.clone()];
+                self.is_show_listbox.set(false);
             }
-            value.push(key.clone());
         });
     }
 }