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use super::buffer::VimEditor;
use super::{Register, VimMode, VisualKind};
impl VimEditor {
/// Enter visual mode
pub fn enter_visual(&mut self, kind: VisualKind) {
if !self.config.visual_allowed {
return;
}
self.visual_anchor = Some((self.cursor_row, self.cursor_col));
self.mode = VimMode::Visual(kind);
}
/// Get the ordered (start, end) of the visual selection
pub fn visual_range(&self) -> Option<((usize, usize), (usize, usize))> {
let anchor = self.visual_anchor?;
let cursor = (self.cursor_row, self.cursor_col);
let (start, end) = if anchor <= cursor {
(anchor, cursor)
} else {
(cursor, anchor)
};
Some((start, end))
}
/// Delete visual selection
pub fn visual_delete(&mut self) {
if let Some(kind) = self.visual_kind() {
self.save_undo();
match kind {
VisualKind::Line => {
if let Some(((sr, _), (er, _))) = self.visual_range() {
let text = self.delete_lines(sr, er - sr + 1);
self.unnamed_register = Register {
content: text,
linewise: true,
};
}
}
VisualKind::Char => {
if let Some(((sr, sc), (er, ec))) = self.visual_range() {
let ec = (ec + 1).min(
self.lines
.get(er)
.map(|l| l.len())
.unwrap_or(0),
);
if sr == er {
let text = self.delete_range(sc, ec, sr);
self.unnamed_register = Register {
content: text,
linewise: false,
};
self.cursor_col = sc;
} else {
// Multi-line char delete
let mut text = String::new();
text.push_str(&self.lines[sr][sc..]);
for row in (sr + 1)..er {
text.push('\n');
text.push_str(&self.lines[row]);
}
text.push('\n');
text.push_str(&self.lines[er][..ec.min(self.lines[er].len())]);
let after = self.lines[er][ec.min(self.lines[er].len())..].to_string();
self.lines[sr].truncate(sc);
self.lines[sr].push_str(&after);
if er > sr {
self.lines.drain((sr + 1)..=er);
}
self.unnamed_register = Register {
content: text,
linewise: false,
};
self.cursor_row = sr;
self.cursor_col = sc;
self.modified = true;
}
}
}
VisualKind::Block => {
// Block delete: remove columns from each line in the range
if let Some(((sr, sc), (er, ec))) = self.visual_range() {
let left = sc.min(ec);
let right = sc.max(ec) + 1;
let mut text = String::new();
for row in sr..=er.min(self.lines.len().saturating_sub(1)) {
let line_len = self.lines[row].len();
let l = left.min(line_len);
let r = right.min(line_len);
if l < r {
if !text.is_empty() {
text.push('\n');
}
text.push_str(&self.lines[row][l..r]);
self.lines[row] = format!(
"{}{}",
&self.lines[row][..l],
&self.lines[row][r..]
);
}
}
self.unnamed_register = Register {
content: text,
linewise: false,
};
self.cursor_row = sr;
self.cursor_col = left;
self.modified = true;
}
}
}
// Always copy deleted text to system clipboard
self.copy_to_system_clipboard(&self.unnamed_register.content.clone());
self.exit_visual();
self.clamp_cursor();
}
}
/// Yank visual selection
pub fn visual_yank(&mut self) {
if let Some(kind) = self.visual_kind() {
match kind {
VisualKind::Line => {
if let Some(((sr, _), (er, _))) = self.visual_range() {
let end = er.min(self.lines.len().saturating_sub(1));
let text: Vec<&str> = self.lines[sr..=end]
.iter()
.map(|s| s.as_str())
.collect();
self.unnamed_register = Register {
content: text.join("\n"),
linewise: true,
};
}
}
VisualKind::Char => {
if let Some(((sr, sc), (er, ec))) = self.visual_range() {
let ec = (ec + 1).min(
self.lines.get(er).map(|l| l.len()).unwrap_or(0),
);
if sr == er {
let line = &self.lines[sr];
let s = sc.min(line.len());
let e = ec.min(line.len());
self.unnamed_register = Register {
content: line[s..e].to_string(),
linewise: false,
};
} else {
let mut text = String::new();
text.push_str(&self.lines[sr][sc..]);
for row in (sr + 1)..er {
text.push('\n');
text.push_str(&self.lines[row]);
}
text.push('\n');
text.push_str(&self.lines[er][..ec.min(self.lines[er].len())]);
self.unnamed_register = Register {
content: text,
linewise: false,
};
}
}
}
VisualKind::Block => {
if let Some(((sr, sc), (er, ec))) = self.visual_range() {
let left = sc.min(ec);
let right = sc.max(ec) + 1;
let mut text = String::new();
for row in sr..=er.min(self.lines.len().saturating_sub(1)) {
let line_len = self.lines[row].len();
let l = left.min(line_len);
let r = right.min(line_len);
if !text.is_empty() {
text.push('\n');
}
if l < r {
text.push_str(&self.lines[row][l..r]);
}
}
self.unnamed_register = Register {
content: text,
linewise: false,
};
}
}
}
// Always copy to system clipboard
self.copy_to_system_clipboard(&self.unnamed_register.content.clone());
self.use_system_clipboard = false;
self.exit_visual();
}
}
/// Indent visual selection
pub fn visual_indent(&mut self) {
if let Some(((sr, _), (er, _))) = self.visual_range() {
self.save_undo();
let end = er.min(self.lines.len().saturating_sub(1));
for row in sr..=end {
self.indent_line(row);
}
self.exit_visual();
}
}
/// Dedent visual selection
pub fn visual_dedent(&mut self) {
if let Some(((sr, _), (er, _))) = self.visual_range() {
self.save_undo();
let end = er.min(self.lines.len().saturating_sub(1));
for row in sr..=end {
self.dedent_line(row);
}
self.exit_visual();
}
}
/// Exit visual mode
pub fn exit_visual(&mut self) {
self.visual_anchor = None;
self.mode = super::VimMode::Normal;
}
fn visual_kind(&self) -> Option<VisualKind> {
match &self.mode {
VimMode::Visual(kind) => Some(kind.clone()),
_ => None,
}
}
}