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support toggling pickers' preview panel (#3021)

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* support toggling pickers' preview panel

* add doc for toggling preview
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Bob 2022-07-18 09:11:25 +08:00 committed by GitHub
parent dbf68e0370
commit 2a8d38c27b
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2 changed files with 12 additions and 1 deletions
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1
book/src/keymap.md
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@ -352,6 +352,7 @@ Keys to use within picker. Remapping currently not supported.
| `Enter` | Open selected |
| `Ctrl-s` | Open horizontally |
| `Ctrl-v` | Open vertically |
| `Ctrl-t` | Toggle preview |
| `Escape`, `Ctrl-c` | Close picker |
# Prompt

12
helix-term/src/ui/picker.rs
View file

@ -173,7 +173,7 @@ impl<T: Item + 'static> Component for FilePicker<T> {
// | | | |
// +---------+ +---------+
let render_preview = area.width > MIN_AREA_WIDTH_FOR_PREVIEW;
let render_preview = self.picker.show_preview && area.width > MIN_AREA_WIDTH_FOR_PREVIEW;
// -- Render the frame:
// clear area
let background = cx.editor.theme.get("ui.background");
@ -300,6 +300,8 @@ pub struct Picker<T: Item> {
previous_pattern: String,
/// Whether to truncate the start (default true)
pub truncate_start: bool,
/// Whether to show the preview panel (default true)
show_preview: bool,
callback_fn: Box<dyn Fn(&mut Context, &T, Action)>,
}
@ -327,6 +329,7 @@ impl<T: Item> Picker<T> {
prompt,
previous_pattern: String::new(),
truncate_start: true,
show_preview: true,
callback_fn: Box::new(callback_fn),
completion_height: 0,
};
@ -470,6 +473,10 @@ impl<T: Item> Picker<T> {
self.filters.sort_unstable(); // used for binary search later
self.prompt.clear(cx);
}
pub fn toggle_preview(&mut self) {
self.show_preview = !self.show_preview;
}
}
// process:
@ -538,6 +545,9 @@ impl<T: Item + 'static> Component for Picker<T> {
ctrl!(' ') => {
self.save_filter(cx);
}
ctrl!('t') => {
self.toggle_preview();
}
_ => {
if let EventResult::Consumed(_) = self.prompt.handle_event(event, cx) {
// TODO: recalculate only if pattern changed