feat: Button icon property supports the signal (#132)

demo_markdown/docs/button/mod.md

@@ -27,21 +27,51 @@ view! {
 ### Icon
 
 ```rust demo
+let icon = create_rw_signal(Some(icondata::AiCloseOutlined));
+
+let on_click = move |_| {
+    icon.update(|icon| {
+        *icon = match icon {
+            Some(data) => {
+                if *data == icondata::AiCloseOutlined {
+                    icondata::AiCheckOutlined
+                } else {
+                    icondata::AiCloseOutlined
+                }
+            }
+            None => icondata::AiCloseOutlined
+        }.into();
+    });
+};
+
 view! {
-    <Space>
-        <Button color=ButtonColor::Error icon=icondata::AiCloseOutlined>
-            "Error Color Icon"
-        </Button>
-        <Button
-            color=ButtonColor::Error
-            icon=icondata::AiCloseOutlined
-            round=true
-        />
-        <Button
-            color=ButtonColor::Error
-            icon=icondata::AiCloseOutlined
-            circle=true
-        />
+    <Space vertical=true>
+        <Space>
+            <Button icon on_click>
+                "Change icon"
+            </Button>
+            <Button icon on_click=move |_| icon.set(None)>
+                "Clear icon"
+            </Button>
+        </Space>
+        <Space>
+            <Button color=ButtonColor::Error icon=icondata::AiCloseOutlined>
+                "Error Color Icon"
+            </Button>
+            <Button color=ButtonColor::Error icon=icondata::AiCloseOutlined>
+                "Error Color Icon"
+            </Button>
+            <Button
+                color=ButtonColor::Error
+                icon=icondata::AiCloseOutlined
+                round=true
+            />
+            <Button
+                color=ButtonColor::Error
+                icon=icondata::AiCloseOutlined
+                circle=true
+            />
+        </Space>
     </Space>
 }
 ```
@@ -135,7 +165,7 @@ view! {
 | color | `MaybeSignal<ButtonColor>` | `ButtonColor::Primary` | Button's color. |
 | round | `MaybeSignal<bool>` | `false` | Whether the button shows rounded corners. |
 | circle | `MaybeSignal<bool>` | `false` | Whether the button is round. |
-| icon | `Option<Icon>` | `None` | The icon of the button. |
+| icon | `OptionalMaybeSignal<icondata_core::Icon>` | `None` | The icon of the button. |
 | loading | `MaybeSignal<bool>` | `false` | Whether the button shows the loading status. |
 | disabled | `MaybeSignal<bool>` | `false` | Whether the button is disabled. |
 | size | `MaybeSignal<ButtonSize>` | `ButtonSize::Medium` | Button size. |

thaw/src/button/mod.rs

@@ -5,7 +5,7 @@ use crate::{
     components::{OptionComp, Wave, WaveRef},
     icon::Icon,
     theme::*,
-    utils::{class_list::class_list, mount_style, ComponentRef, OptionalProp},
+    utils::{class_list::class_list, mount_style, ComponentRef, OptionalMaybeSignal, OptionalProp},
 };
 pub use button_group::ButtonGroup;
 use leptos::*;
@@ -104,7 +104,7 @@ pub fn Button(
     #[prop(optional, into)] size: MaybeSignal<ButtonSize>,
     #[prop(optional, into)] round: MaybeSignal<bool>,
     #[prop(optional, into)] circle: MaybeSignal<bool>,
-    #[prop(optional, into)] icon: Option<icondata_core::Icon>,
+    #[prop(optional, into)] icon: OptionalMaybeSignal<icondata_core::Icon>,
     #[prop(optional, into)] loading: MaybeSignal<bool>,
     #[prop(optional, into)] disabled: MaybeSignal<bool>,
     #[prop(optional, into)] on_click: Option<Callback<ev::MouseEvent>>,
@@ -248,12 +248,17 @@ pub fn Button(
                                 "animation: thawLoadingCircle 1s infinite linear;{icon_style}",
                             )
                         />
-                    }
-                        .into()
-                } else if let Some(icon) = icon {
-                    view! { <Icon icon=icon style=icon_style/> }.into()
+                    }.into_view()
+
                 } else {
-                    None
+                    (move || {
+                        let icon = icon.get();
+                        view! {
+                            <OptionComp value=icon let:icon>
+                                <Icon icon=icon style=icon_style/>
+                            </OptionComp>
+                        }
+                    }).into_view()
                 }
             }}
 

thaw/src/utils/mod.rs

@@ -4,6 +4,7 @@ mod component_ref;
 mod event_listener;
 mod model;
 mod mount_style;
+mod optional_maybe_signal;
 mod optional_prop;
 mod signal;
 mod stored_maybe_signal;
@@ -16,6 +17,7 @@ pub use component_ref::{create_component_ref, ComponentRef};
 pub(crate) use event_listener::*;
 pub(crate) use model::Model;
 pub(crate) use mount_style::mount_style;
+pub(crate) use optional_maybe_signal::OptionalMaybeSignal;
 pub(crate) use optional_prop::OptionalProp;
 pub use signal::SignalWatch;
 pub(crate) use stored_maybe_signal::*;

thaw/src/utils/optional_maybe_signal.rs

@@ -0,0 +1,85 @@
+use leptos::*;
+use std::ops::Deref;
+
+pub struct OptionalMaybeSignal<T: 'static>(MaybeSignal<Option<T>>);
+
+impl<T> Default for OptionalMaybeSignal<T> {
+    fn default() -> Self {
+        Self(MaybeSignal::Static(None))
+    }
+}
+
+impl<T: Copy> Copy for OptionalMaybeSignal<T> {}
+
+impl<T: Clone> Clone for OptionalMaybeSignal<T> {
+    fn clone(&self) -> Self {
+        Self(self.0.clone())
+    }
+}
+
+impl<T> Deref for OptionalMaybeSignal<T> {
+    type Target = MaybeSignal<Option<T>>;
+
+    fn deref(&self) -> &Self::Target {
+        &self.0
+    }
+}
+
+impl<T> From<T> for OptionalMaybeSignal<T> {
+    fn from(value: T) -> Self {
+        Self(MaybeSignal::Static(Some(value)))
+    }
+}
+
+impl<T> From<Option<T>> for OptionalMaybeSignal<T> {
+    fn from(value: Option<T>) -> Self {
+        Self(MaybeSignal::Static(value))
+    }
+}
+
+impl<T> From<ReadSignal<Option<T>>> for OptionalMaybeSignal<T> {
+    fn from(value: ReadSignal<Option<T>>) -> Self {
+        Self(MaybeSignal::Dynamic(value.into()))
+    }
+}
+
+impl<T> From<RwSignal<Option<T>>> for OptionalMaybeSignal<T> {
+    fn from(value: RwSignal<Option<T>>) -> Self {
+        Self(MaybeSignal::Dynamic(value.into()))
+    }
+}
+
+impl<T> From<Memo<Option<T>>> for OptionalMaybeSignal<T> {
+    fn from(value: Memo<Option<T>>) -> Self {
+        Self(MaybeSignal::Dynamic(value.into()))
+    }
+}
+
+impl<T> From<Signal<Option<T>>> for OptionalMaybeSignal<T> {
+    fn from(value: Signal<Option<T>>) -> Self {
+        Self(MaybeSignal::Dynamic(value))
+    }
+}
+
+impl<T> From<MaybeSignal<Option<T>>> for OptionalMaybeSignal<T> {
+    fn from(value: MaybeSignal<Option<T>>) -> Self {
+        Self(value)
+    }
+}
+
+#[cfg(test)]
+mod test {
+    use super::OptionalMaybeSignal;
+    use leptos::{create_runtime, MaybeSignal};
+
+    #[test]
+    fn into() {
+        let runtime = create_runtime();
+
+        let _: MaybeSignal<i32> = 12.into();
+        let _: OptionalMaybeSignal<i32> = Some(12).into();
+        let _: OptionalMaybeSignal<i32> = MaybeSignal::Static(Some(12)).into();
+
+        runtime.dispose();
+    }
+}