45 lines
1.3 KiB
Rust
45 lines
1.3 KiB
Rust
/// A single-entry kill buffer for the TUI input view.
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///
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/// Stores the last text killed by `Ctrl+K`, `Ctrl+U`, `Ctrl+W`, or `Alt+D`.
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/// `Ctrl+Y` yanks (pastes) the stored text back into the input.
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///
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/// This is intentionally simple — a kill ring (multi-entry yank cycle) is
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/// listed as a follow-up in `specs/tui-input-view/TECH.md`.
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#[derive(Debug, Default)]
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pub struct KillBuffer {
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content: String,
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}
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impl KillBuffer {
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/// Store `text` as the killed content, replacing any previous entry.
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pub fn kill(&mut self, text: impl Into<String>) {
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self.content = text.into();
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}
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/// Append `text` to the current kill buffer content.
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/// Used when multiple consecutive kills are combined (e.g. `Ctrl+K` at
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/// the end of one line followed immediately by another `Ctrl+K`).
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pub fn kill_append(&mut self, text: impl Into<String>) {
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self.content.push_str(&text.into());
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}
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/// Return the killed text for yanking, if any.
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pub fn yank(&self) -> Option<&str> {
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if self.content.is_empty() {
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None
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} else {
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Some(&self.content)
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}
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}
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/// Return whether the kill buffer is empty.
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pub fn is_empty(&self) -> bool {
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self.content.is_empty()
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}
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/// Clear the kill buffer.
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pub fn clear(&mut self) {
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self.content.clear();
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}
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}
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