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Start implementing copy to all (#24)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,124 @@ | ||
| #![allow(unused)] | ||
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| use crate::render_util::item_context_menu; | ||
| use nexus::imgui::{MenuItem, Ui}; | ||
| use std::fmt; | ||
|
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| pub struct DynAction<T>(Option<Box<dyn FnMut(&mut T)>>); | ||
|
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| impl<T> DynAction<T> { | ||
| pub const fn empty() -> Self { | ||
| Self(None) | ||
| } | ||
|
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| pub fn new(action: impl FnMut(&mut T) + 'static) -> Self { | ||
| Self(Some(Box::new(action))) | ||
| } | ||
|
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| pub fn try_new(action: Option<impl FnMut(&mut T) + 'static>) -> Self { | ||
| match action { | ||
| Some(action) => Self::new(action), | ||
| None => Self::empty(), | ||
| } | ||
| } | ||
|
|
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| pub fn is_none(&self) -> bool { | ||
| !self.is_some() | ||
| } | ||
|
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| pub fn is_some(&self) -> bool { | ||
| self.0.is_some() | ||
| } | ||
|
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| pub fn perform(&mut self, value: &mut T) { | ||
| if let Some(action) = self.0.as_mut() { | ||
| action(value) | ||
| } | ||
| } | ||
|
|
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| pub fn set(&mut self, action: impl FnMut(&mut T) + 'static) { | ||
| *self = Self::new(action); | ||
| } | ||
|
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| pub fn map<O>(self, mut map: impl (FnMut(&mut O) -> &mut T) + 'static) -> DynAction<O> | ||
| where | ||
| T: 'static, | ||
| { | ||
| DynAction::try_new( | ||
| self.0 | ||
| .map(|mut action| move |value: &mut O| action(map(value))), | ||
| ) | ||
| } | ||
|
|
||
| pub fn try_map<O>( | ||
| self, | ||
| mut try_map: impl FnMut(&mut O) -> Option<&mut T> + 'static, | ||
| ) -> DynAction<O> | ||
| where | ||
| T: 'static, | ||
| { | ||
| DynAction::try_new(self.0.map(|mut action| { | ||
| move |value: &mut O| { | ||
| if let Some(inner) = try_map(value) { | ||
| action(inner) | ||
| } | ||
| } | ||
| })) | ||
| } | ||
|
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| pub fn or(&mut self, other: Self) { | ||
| if self.is_none() { | ||
| *self = other; | ||
| } | ||
| } | ||
|
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| pub fn render_copy_all( | ||
| &mut self, | ||
| ui: &Ui, | ||
| id: impl Into<String>, | ||
| action: impl FnMut(&mut T) + 'static, | ||
| ) { | ||
| item_context_menu(id, || { | ||
| if MenuItem::new("Copy to all siblings").build(ui) { | ||
| self.set(action); | ||
| } | ||
| }); | ||
| } | ||
| } | ||
|
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| impl<T> fmt::Debug for DynAction<T> { | ||
| fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { | ||
| f.debug_tuple("DynAction") | ||
| .field(&format_args!( | ||
| "{:?}", | ||
| self.0.as_ref().map(|inner| inner.as_ref() as *const _) | ||
| )) | ||
| .finish() | ||
| } | ||
| } | ||
|
|
||
| /// Render a copy all context menu for the last item. | ||
| /// | ||
| /// Note: this uses the field name as popup id! | ||
| #[macro_export] | ||
| macro_rules! render_copy_field { | ||
| ($action:expr, $ui:expr, $self:ident . $field:ident) => {{ | ||
| let value = $self.$field; | ||
| $action.render_copy_all($ui, stringify!($field), move |other| { | ||
| other.$field = value; | ||
| }); | ||
| }}; | ||
| ($action:expr, $ui:expr, *$field:ident) => {{ | ||
| let value = *$field; | ||
| $action.render_copy_all($ui, stringify!($field), move |other| { | ||
| other.$field = value; | ||
| }); | ||
| }}; | ||
| ($action:expr, $ui:expr, $field:ident) => {{ | ||
| $action.render_copy_all($ui, stringify!($field), move |other| { | ||
| other.$field = $field; | ||
| }); | ||
| }}; | ||
| } | ||
|
|
||
| pub use render_copy_field; |
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