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use crate::context::AppContext;
use crate::error::JoshutoResult;
use crate::history::DirectoryHistory;
use crate::ui::TuiBackend;
use std::path::PathBuf;
pub fn cursor_move(new_index: usize, context: &mut AppContext) -> JoshutoResult<()> {
let mut path: Option<PathBuf> = None;
let mut new_index = new_index;
if let Some(curr_list) = context.tab_context_mut().curr_tab_mut().curr_list_mut() {
if !curr_list.is_empty() {
let dir_len = curr_list.len();
if new_index >= dir_len {
new_index = dir_len - 1;
}
curr_list.index = Some(new_index);
let entry = &curr_list.contents[new_index];
path = Some(entry.file_path().to_path_buf())
}
}
// get preview
if let Some(path) = path {
if path.is_dir() {
let options = context.config_ref().display_options_ref().clone();
context
.tab_context_mut()
.curr_tab_mut()
.history_mut()
.create_or_soft_update(path.as_path(), &options)?;
}
}
Ok(())
}
pub fn up(context: &mut AppContext, u: usize) -> JoshutoResult<()> {
let movement = match context.tab_context_ref().curr_tab_ref().curr_list_ref() {
Some(curr_list) => curr_list.index.map(|idx| if idx > u { idx - u } else { 0 }),
None => None,
};
if let Some(s) = movement {
cursor_move(s, context)?;
}
Ok(())
}
pub fn down(context: &mut AppContext, u: usize) -> JoshutoResult<()> {
let movement = match context.tab_context_ref().curr_tab_ref().curr_list_ref() {
Some(curr_list) => curr_list.index.map(|idx| idx + u),
None => None,
};
if let Some(s) = movement {
cursor_move(s, context)?;
}
Ok(())
}
pub fn home(context: &mut AppContext) -> JoshutoResult<()> {
let movement: Option<usize> = match context.tab_context_ref().curr_tab_ref().curr_list_ref() {
Some(curr_list) => {
let len = curr_list.len();
if len == 0 {
None
} else {
Some(0)
}
}
None => None,
};
if let Some(s) = movement {
cursor_move(s, context)?;
}
Ok(())
}
pub fn end(context: &mut AppContext) -> JoshutoResult<()> {
let movement: Option<usize> = match context.tab_context_ref().curr_tab_ref().curr_list_ref() {
Some(curr_list) => {
let len = curr_list.len();
if len == 0 {
None
} else {
Some(len - 1)
}
}
None => None,
};
if let Some(s) = movement {
cursor_move(s, context)?;
}
Ok(())
}
fn get_page_size(context: &AppContext, backend: &TuiBackend) -> Option<usize> {
let config = context.config_ref();
let rect = backend.terminal.as_ref().map(|t| t.size())?.ok()?;
let rect_height = rect.height as usize;
if config.display_options_ref().show_borders() {
if rect_height >= 4 {
Some(rect_height - 4)
} else {
None
}
} else {
if rect_height >= 2 {
Some(rect_height - 2)
} else {
None
}
}
}
pub fn page_up(context: &mut AppContext, backend: &mut TuiBackend) -> JoshutoResult<()> {
let page_size = get_page_size(context, backend).unwrap_or(10);
let movement = match context.tab_context_ref().curr_tab_ref().curr_list_ref() {
Some(curr_list) => curr_list
.index
.map(|idx| if idx > page_size { idx - page_size } else { 0 }),
None => None,
};
if let Some(s) = movement {
cursor_move(s, context)?;
}
Ok(())
}
pub fn page_down(context: &mut AppContext, backend: &mut TuiBackend) -> JoshutoResult<()> {
let page_size = get_page_size(context, backend).unwrap_or(10);
let movement = match context.tab_context_ref().curr_tab_ref().curr_list_ref() {
Some(curr_list) => {
let dir_len = curr_list.len();
curr_list.index.map(|idx| {
if idx + page_size > dir_len - 1 {
dir_len - 1
} else {
idx + page_size
}
})
}
None => None,
};
if let Some(s) = movement {
cursor_move(s, context)?;
}
Ok(())
}
|
