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WIP explore more commands on generic types

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Michael Davis 2023-06-25 14:32:29 -05:00
parent 71b6cc4d17
commit 136704b3fb
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1 changed files with 51 additions and 1 deletions
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52
helix-term/src/ui/picker.rs
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@ -1002,7 +1002,7 @@ fn id(&self) -> Option<&'static str> {
pub fn close_buffer_in_buffer_picker(
component: &mut dyn Component,
cx: &mut compositor::Context,
cx: &mut Context,
) -> EventResult {
let Some(picker) = component
.as_any_mut()
@ -1029,6 +1029,56 @@ pub fn close_buffer_in_buffer_picker(
EventResult::Consumed(None)
}
// Above command is cool because it's for one specific picker.
// This is also cool because it doesn't even need to interact with
// the picker, so we don't need concrete types:
pub fn close_picker(_component: &mut dyn Component, _cx: &mut Context) -> EventResult {
close_fn()
}
// Now this is a problem. It compiles ok.
// We can probably even specify it in the default keymap:
//
// MappableCommand::Component { name: "..", doc: "..", fun: crate::ui::picker::to_start<PathBuf> }
//
// But how do we represent this in keymap config? Do we do namespacing in the
// command names and end up with tens of commands for scrolling each picker?
//
// MappableCommand::Component {
// name: "file_picker::to_start",
// doc: "..",
// crate::ui::picker::to_start<PathBuf>,
// },
// MappableCommand::Component {
// name: "buffer_picker::to_start",
// doc: "..",
// crate::ui::picker::to_start<BufferMeta>,
// },
//
// Can we use a macro to close over the verbose parts of this?
//
// Can we do something clever with a hypothetical AnyPicker interface
// similar to AnyComponent? Will we have to do that for every Component
// that uses generics?
pub fn to_start<T: ui::menu::Item + 'static>(
component: &mut dyn Component,
_cx: &mut Context,
) -> EventResult {
let Some(picker) = component
.as_any_mut()
.downcast_mut::<Picker<T>>()
else {
return EventResult::Ignored(None);
};
picker.cursor = 0;
EventResult::Consumed(None)
}
fn close_fn() -> EventResult {
EventResult::Consumed(Some(Box::new(|compositor: &mut Compositor, _ctx| {
// remove the layer