Browse Source

utilities: move pager to its own module

jmap-eventsource
Manos Pitsidianakis 1 year ago
parent
commit
1e7b40e6b3
Signed by: epilys GPG Key ID: 73627C2F690DF710
  1. 574
      src/components/utilities.rs
  2. 583
      src/components/utilities/pager.rs

574
src/components/utilities.rs

@ -24,6 +24,9 @@
use super::*;
use text_processing::Reflow;
mod pager;
pub use self::pager::*;
mod widgets;
pub use self::widgets::*;
@ -53,577 +56,6 @@ pub struct SearchPattern {
movement: Option<PageMovement>,
}
/// A pager for text.
/// `Pager` holds its own content in its own `CellBuffer` and when `draw` is called, it draws the
/// current view of the text. It is responsible for scrolling etc.
#[derive(Default, Debug, Clone)]
pub struct Pager {
text: String,
cursor: (usize, usize),
reflow: Reflow,
height: usize,
width: usize,
minimum_width: usize,
search: Option<SearchPattern>,
dirty: bool,
colors: ThemeAttribute,
initialised: bool,
content: CellBuffer,
text_lines: Vec<String>,
movement: Option<PageMovement>,
id: ComponentId,
}
impl fmt::Display for Pager {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f, "{}", Pager::DESCRIPTION)
}
}
impl Pager {
pub const DESCRIPTION: &'static str = "pager";
pub fn set_colors(&mut self, new_val: ThemeAttribute) -> &mut Self {
self.colors = new_val;
self
}
pub fn set_reflow(&mut self, new_val: Reflow) -> &mut Self {
self.reflow = new_val;
self
}
pub fn reflow(&self) -> Reflow {
self.reflow
}
pub fn update_from_str(&mut self, text: &str, mut width: Option<usize>) {
if width.is_some() && width.unwrap() < self.minimum_width {
width = Some(self.minimum_width);
}
let lines: Vec<String> = text.split_lines_reflow(self.reflow, width);
let height = lines.len() + 2;
let width = width.unwrap_or_else(|| lines.iter().map(|l| l.len()).max().unwrap_or(0));
let ascii_drawing = self.content.ascii_drawing;
let mut empty_cell = Cell::with_char(' ');
empty_cell.set_fg(self.colors.fg);
empty_cell.set_bg(self.colors.bg);
let mut content = CellBuffer::new(width, height, empty_cell);
content.set_ascii_drawing(ascii_drawing);
Pager::print_string(&mut content, &lines, self.colors);
self.text = text.to_string();
self.text_lines = lines;
self.content = content;
self.height = height;
self.width = width;
self.dirty = true;
self.cursor = (0, 0);
}
pub fn from_string(
mut text: String,
context: Option<&Context>,
cursor_pos: Option<usize>,
mut width: Option<usize>,
colors: ThemeAttribute,
) -> Self {
let pager_filter: Option<&String> = if let Some(context) = context {
context.settings.pager.filter.as_ref()
} else {
None
};
let pager_minimum_width: usize = if let Some(context) = context {
context.settings.pager.minimum_width
} else {
0
};
let reflow: Reflow = if let Some(context) = context {
if context.settings.pager.split_long_lines {
Reflow::All
} else {
Reflow::No
}
} else {
Reflow::All
};
if width.is_some() && width.unwrap() < pager_minimum_width {
width = Some(pager_minimum_width);
}
if let Some(content) = pager_filter.and_then(|bin| {
use std::io::Write;
use std::process::{Command, Stdio};
let mut filter_child = Command::new("sh")
.args(&["-c", bin])
.stdin(Stdio::piped())
.stdout(Stdio::piped())
.spawn()
.expect("Failed to start pager filter process");
{
let stdin = filter_child.stdin.as_mut().expect("failed to open stdin");
stdin
.write_all(text.as_bytes())
.expect("Failed to write to stdin");
}
text = String::from_utf8_lossy(
&filter_child
.wait_with_output()
.expect("Failed to wait on filter")
.stdout,
)
.to_string();
if text.is_empty() {
None
} else {
crate::terminal::ansi::ansi_to_cellbuffer(&text)
}
}) {
return Pager::from_buf(content, cursor_pos);
}
let lines: Vec<String>;
let content = {
lines = if let Some(width) = width {
text.split_lines_reflow(reflow, Some(width.saturating_sub(2)))
} else {
text.trim().split('\n').map(str::to_string).collect()
};
let height = lines.len() + 1;
let width = width.unwrap_or_else(|| lines.iter().map(|l| l.len()).max().unwrap_or(0));
let mut empty_cell = Cell::with_char(' ');
empty_cell.set_fg(colors.fg);
empty_cell.set_bg(colors.bg);
let mut content = if let Some(context) = context {
CellBuffer::new_with_context(width, height, empty_cell, context)
} else {
CellBuffer::new(width, height, empty_cell)
};
Pager::print_string(&mut content, &lines, colors);
content
};
Pager {
text,
text_lines: lines,
reflow,
cursor: (0, cursor_pos.unwrap_or(0)),
height: content.size().1,
width: content.size().0,
dirty: true,
content,
id: ComponentId::new_v4(),
colors,
..Default::default()
}
}
pub fn from_str(
text: &str,
cursor_pos: Option<usize>,
width: Option<usize>,
colors: ThemeAttribute,
) -> Self {
let lines: Vec<String> = if let Some(width) = width {
text.split_lines(width)
} else {
text.trim().split('\n').map(str::to_string).collect()
};
let height = lines.len() + 1;
let width = width.unwrap_or_else(|| lines.iter().map(|l| l.len()).max().unwrap_or(0));
let mut empty_cell = Cell::with_char(' ');
empty_cell.set_fg(colors.fg);
empty_cell.set_bg(colors.bg);
let mut content = CellBuffer::new(width, height, empty_cell);
Pager::print_string(&mut content, &lines, colors);
Pager {
text: text.to_string(),
text_lines: lines,
cursor: (0, cursor_pos.unwrap_or(0)),
height,
width,
dirty: true,
content,
colors,
id: ComponentId::new_v4(),
..Default::default()
}
}
pub fn from_buf(content: CellBuffer, cursor_pos: Option<usize>) -> Self {
let (width, height) = content.size();
Pager {
text: String::new(),
cursor: (0, cursor_pos.unwrap_or(0)),
height,
width,
dirty: true,
content,
initialised: true,
id: ComponentId::new_v4(),
..Default::default()
}
}
pub fn print_string(content: &mut CellBuffer, lines: &[String], colors: ThemeAttribute) {
let width = content.size().0;
debug!(colors);
for (i, l) in lines.iter().enumerate() {
write_string_to_grid(
l,
content,
colors.fg,
colors.bg,
Attr::DEFAULT,
((0, i), (width.saturating_sub(1), i)),
None,
);
if l.starts_with("⤷") {
content[(0, i)].set_fg(Color::Byte(240));
content[(0, i)].set_attrs(Attr::BOLD);
}
}
}
pub fn cursor_pos(&self) -> usize {
self.cursor.1
}
pub fn size(&self) -> (usize, usize) {
(self.width, self.height)
}
}
impl Component for Pager {
fn draw(&mut self, grid: &mut CellBuffer, area: Area, context: &mut Context) {
if !is_valid_area!(area) {
return;
}
if !self.is_dirty() {
return;
}
if !self.initialised && !self.text.is_empty() {
let mut width = width!(area);
if width < self.minimum_width {
width = self.minimum_width;
}
let lines: Vec<String> = self
.text
.split_lines_reflow(self.reflow, Some(width.saturating_sub(2)));
let height = lines.len() + 2;
let mut empty_cell = Cell::with_char(' ');
empty_cell.set_fg(self.colors.fg);
empty_cell.set_bg(self.colors.bg);
let mut content = CellBuffer::new(width, height, empty_cell);
content.set_ascii_drawing(self.content.ascii_drawing);
if let Some(ref mut search) = self.search {
use melib::text_processing::search::KMP;
search.positions.clear();
for (y, l) in lines.iter().enumerate() {
search.positions.extend(
l.kmp_search(&search.pattern)
.into_iter()
.map(|offset| (y, offset)),
);
}
}
Pager::print_string(&mut content, &lines, self.colors);
#[cfg(feature = "regexp")]
{
for text_formatter in
crate::conf::text_format_regexps(context, "pager.envelope.body")
{
let t = content.insert_tag(text_formatter.tag);
for (i, l) in lines.iter().enumerate() {
for (start, end) in text_formatter.regexp.find_iter(l) {
content.set_tag(t, (start, i), (end, i));
}
}
}
}
self.text_lines = lines;
if let Some(ref mut search) = self.search {
let results_attr = crate::conf::value(context, "pager.highlight_search");
let results_current_attr =
crate::conf::value(context, "pager.highlight_search_current");
search.cursor =
std::cmp::min(search.positions.len().saturating_sub(1), search.cursor);
for (i, (y, x)) in search.positions.iter().enumerate() {
for c in content.row_iter(*x..*x + search.pattern.grapheme_len(), *y) {
if i == search.cursor {
content[c]
.set_fg(results_current_attr.fg)
.set_bg(results_current_attr.bg)
.set_attrs(results_current_attr.attrs);
} else {
content[c]
.set_fg(results_attr.fg)
.set_bg(results_attr.bg)
.set_attrs(results_attr.attrs);
}
}
}
}
self.content = content;
self.height = height;
self.width = width;
self.initialised = true;
}
self.dirty = false;
let height = height!(area);
if let Some(mvm) = self.movement.take() {
match mvm {
PageMovement::Up(amount) => {
self.cursor.1 = self.cursor.1.saturating_sub(amount);
}
PageMovement::PageUp(multiplier) => {
self.cursor.1 = self.cursor.1.saturating_sub(height * multiplier);
}
PageMovement::Down(amount) => {
if self.cursor.1 + amount < self.height {
self.cursor.1 += amount;
}
}
PageMovement::PageDown(multiplier) => {
if self.cursor.1 + height * multiplier < self.height {
self.cursor.1 += height * multiplier;
}
}
PageMovement::Right(multiplier) => {
let offset = width!(area) / 3;
if self.cursor.0 + offset * multiplier < self.content.size().0 {
self.cursor.0 += offset * multiplier;
}
}
PageMovement::Left(multiplier) => {
let offset = width!(area) / 3;
self.cursor.0 = self.cursor.0.saturating_sub(offset * multiplier);
}
PageMovement::Home => {
self.cursor.1 = 0;
}
PageMovement::End => {
self.cursor.1 = (self.height / height) * height;
}
}
}
if self.height == 0 || self.width == 0 {
return;
}
if let Some(ref mut search) = self.search {
if !search.positions.is_empty() {
if let Some(mvm) = search.movement.take() {
match mvm {
PageMovement::Up(_) => {
if self.cursor.1 > search.positions[search.cursor].0 {
self.cursor.1 = search.positions[search.cursor].0;
}
}
PageMovement::Down(_) => {
if self.cursor.1 + height < search.positions[search.cursor].0 {
self.cursor.1 = search.positions[search.cursor].0;
}
}
_ => {}
}
}
}
}
clear_area(grid, area, crate::conf::value(context, "theme_default"));
let (width, height) = self.content.size();
let (cols, rows) = (width!(area), height!(area));
self.cursor = (
std::cmp::min(width.saturating_sub(cols), self.cursor.0),
std::cmp::min(height.saturating_sub(rows), self.cursor.1),
);
copy_area(
grid,
&self.content,
area,
(
(
std::cmp::min((width - 1).saturating_sub(cols), self.cursor.0),
std::cmp::min((height - 1).saturating_sub(rows), self.cursor.1),
),
(
std::cmp::min(self.cursor.0 + cols, width - 1),
std::cmp::min(self.cursor.1 + rows, height - 1),
),
),
);
context.dirty_areas.push_back(area);
}
fn process_event(&mut self, event: &mut UIEvent, context: &mut Context) -> bool {
let shortcuts = self.get_shortcuts(context);
match event {
UIEvent::Input(ref key)
if shortcut!(key == shortcuts[Self::DESCRIPTION]["scroll_up"]) =>
{
self.cursor.1 = self.cursor.1.saturating_sub(1);
self.dirty = true;
return true;
}
UIEvent::Input(ref key)
if shortcut!(key == shortcuts[Self::DESCRIPTION]["scroll_down"]) =>
{
self.cursor.1 = self.cursor.1 + 1;
self.dirty = true;
return true;
}
UIEvent::Input(Key::Home) => {
self.movement = Some(PageMovement::Home);
self.dirty = true;
return true;
}
UIEvent::Input(Key::End) => {
self.movement = Some(PageMovement::End);
self.dirty = true;
return true;
}
UIEvent::Input(Key::Left) => {
self.movement = Some(PageMovement::Left(1));
self.dirty = true;
return true;
}
UIEvent::Input(Key::Right) => {
self.movement = Some(PageMovement::Right(1));
self.dirty = true;
return true;
}
UIEvent::Input(ref key)
if shortcut!(key == shortcuts[Self::DESCRIPTION]["page_up"]) =>
{
self.movement = Some(PageMovement::PageUp(1));
self.dirty = true;
return true;
}
UIEvent::Input(ref key)
if shortcut!(key == shortcuts[Self::DESCRIPTION]["page_down"]) =>
{
self.movement = Some(PageMovement::PageDown(1));
self.dirty = true;
return true;
}
UIEvent::ChangeMode(UIMode::Normal) => {
self.dirty = true;
}
UIEvent::Action(View(Pipe(ref bin, ref args))) => {
use std::io::Write;
use std::process::{Command, Stdio};
let mut command_obj = match Command::new(bin)
.args(args.as_slice())
.stdin(Stdio::piped())
.stdout(Stdio::piped())
.spawn()
{
Ok(o) => o,
Err(e) => {
context.replies.push_back(UIEvent::StatusEvent(
StatusEvent::DisplayMessage(format!(
"Could not pipe to {}: {}",
bin, e
)),
));
return true;
}
};
let stdin = command_obj.stdin.as_mut().expect("failed to open stdin");
stdin
.write_all(self.text.as_bytes())
.expect("Failed to write to stdin");
context
.replies
.push_back(UIEvent::StatusEvent(StatusEvent::DisplayMessage(format!(
"Pager text piped to '{}{}{}'",
&bin,
if args.is_empty() { "" } else { " " },
args.join(" ")
))));
return true;
}
UIEvent::Action(Action::Listing(ListingAction::Search(pattern))) => {
self.search = Some(SearchPattern {
pattern: pattern.to_string(),
positions: vec![],
cursor: 0,
movement: Some(PageMovement::Home),
});
self.initialised = false;
self.dirty = true;
return true;
}
UIEvent::Input(Key::Char('n')) if self.search.is_some() => {
if let Some(ref mut search) = self.search {
search.movement = Some(PageMovement::Down(1));
search.cursor += 1;
} else {
unsafe {
std::hint::unreachable_unchecked();
}
}
self.initialised = false;
self.dirty = true;
return true;
}
UIEvent::Input(Key::Char('N')) if self.search.is_some() => {
if let Some(ref mut search) = self.search {
search.movement = Some(PageMovement::Up(1));
search.cursor = search.cursor.saturating_sub(1);
} else {
unsafe {
std::hint::unreachable_unchecked();
}
}
self.initialised = false;
self.dirty = true;
return true;
}
UIEvent::Input(Key::Esc) if self.search.is_some() => {
self.search = None;
self.initialised = false;
self.dirty = true;
return true;
}
UIEvent::Resize => {
self.initialised = false;
self.dirty = true;
}
_ => {}
}
false
}
fn is_dirty(&self) -> bool {
self.dirty
}
fn set_dirty(&mut self, value: bool) {
self.dirty = value;
}
fn get_shortcuts(&self, context: &Context) -> ShortcutMaps {
let config_map: IndexMap<&'static str, Key> = context.settings.shortcuts.pager.key_values();
let mut ret: ShortcutMaps = Default::default();
ret.insert(Pager::DESCRIPTION, config_map);
ret
}
fn id(&self) -> ComponentId {
self.id
}
fn set_id(&mut self, id: ComponentId) {
self.id = id;
}
}
/// Status bar.
#[derive(Debug)]
pub struct StatusBar {

583
src/components/utilities/pager.rs

@ -0,0 +1,583 @@
/*
* meli - pager
*
* Copyright 2020 Manos Pitsidianakis
*
* This file is part of meli.
*
* meli is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* meli is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with meli. If not, see <http://www.gnu.org/licenses/>.
*/
use super::*;
/// A pager for text.
/// `Pager` holds its own content in its own `CellBuffer` and when `draw` is called, it draws the
/// current view of the text. It is responsible for scrolling etc.
#[derive(Default, Debug, Clone)]
pub struct Pager {
text: String,
cursor: (usize, usize),
reflow: Reflow,
height: usize,
width: usize,
minimum_width: usize,
search: Option<SearchPattern>,
dirty: bool,
colors: ThemeAttribute,
initialised: bool,
content: CellBuffer,
text_lines: (usize, Vec<String>),
movement: Option<PageMovement>,
id: ComponentId,
}
impl fmt::Display for Pager {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f, "{}", Pager::DESCRIPTION)
}
}
impl Pager {
pub const DESCRIPTION: &'static str = "pager";
pub fn set_colors(&mut self, new_val: ThemeAttribute) -> &mut Self {
self.colors = new_val;
self
}
pub fn set_reflow(&mut self, new_val: Reflow) -> &mut Self {
self.reflow = new_val;
self
}
pub fn reflow(&self) -> Reflow {
self.reflow
}
pub fn update_from_str(&mut self, text: &str, mut width: Option<usize>) {
if let Some(ref mut width) = width.as_mut() {
if **width < self.minimum_width {
**width = self.minimum_width;
}
}
let lines: Vec<String> = text.split_lines_reflow(self.reflow, width);
let height = lines.len() + 2;
let width = width.unwrap_or_else(|| lines.iter().map(|l| l.len()).max().unwrap_or(0));
let mut empty_cell = Cell::with_char(' ');
empty_cell.set_fg(self.colors.fg);
empty_cell.set_bg(self.colors.bg);
let mut content = CellBuffer::new(1, 1, empty_cell);
content.set_ascii_drawing(self.content.ascii_drawing);
self.text = text.to_string();
self.text_lines = (0, vec![]);
self.content = content;
self.height = height;
self.width = width;
self.initialised = false;
self.dirty = true;
self.cursor = (0, 0);
}
pub fn from_string(
mut text: String,
context: Option<&Context>,
cursor_pos: Option<usize>,
mut width: Option<usize>,
colors: ThemeAttribute,
) -> Self {
let pager_filter: Option<&String> = if let Some(context) = context {
context.settings.pager.filter.as_ref()
} else {
None
};
let pager_minimum_width: usize = if let Some(context) = context {
context.settings.pager.minimum_width
} else {
0
};
let reflow: Reflow = if let Some(context) = context {
if context.settings.pager.split_long_lines {
Reflow::All
} else {
Reflow::No
}
} else {
Reflow::All
};
if let Some(ref mut width) = width.as_mut() {
if **width < pager_minimum_width {
**width = pager_minimum_width;
}
}
if let Some(content) = pager_filter.and_then(|bin| {
use std::io::Write;
use std::process::{Command, Stdio};
let mut filter_child = Command::new("sh")
.args(&["-c", bin])
.stdin(Stdio::piped())
.stdout(Stdio::piped())
.spawn()
.expect("Failed to start pager filter process");
{
let stdin = filter_child.stdin.as_mut().expect("failed to open stdin");
stdin
.write_all(text.as_bytes())
.expect("Failed to write to stdin");
}
text = String::from_utf8_lossy(
&filter_child
.wait_with_output()
.expect("Failed to wait on filter")
.stdout,
)
.to_string();
if text.is_empty() {
None
} else {
crate::terminal::ansi::ansi_to_cellbuffer(&text)
}
}) {
return Pager::from_buf(content, cursor_pos);
}
let content = {
let mut empty_cell = Cell::with_char(' ');
empty_cell.set_fg(colors.fg);
empty_cell.set_bg(colors.bg);
if let Some(context) = context {
CellBuffer::new_with_context(1, 1, empty_cell, context)
} else {
CellBuffer::new(1, 1, empty_cell)
}
};
Pager {
text,
text_lines: (0, vec![]),
reflow,
cursor: (0, cursor_pos.unwrap_or(0)),
height: content.size().1,
width: content.size().0,
minimum_width: pager_minimum_width,
initialised: false,
dirty: true,
content,
id: ComponentId::new_v4(),
colors,
..Default::default()
}
}
pub fn from_str(
text: &str,
cursor_pos: Option<usize>,
width: Option<usize>,
colors: ThemeAttribute,
) -> Self {
let mut empty_cell = Cell::with_char(' ');
empty_cell.set_fg(colors.fg);
empty_cell.set_bg(colors.bg);
Pager {
text: text.to_string(),
text_lines: (0, vec![]),
cursor: (0, cursor_pos.unwrap_or(0)),
height: 1,
width: width.unwrap_or(1),
initialised: false,
dirty: true,
content: CellBuffer::new(1, 1, empty_cell),
colors,
id: ComponentId::new_v4(),
..Default::default()
}
}
pub fn from_buf(content: CellBuffer, cursor_pos: Option<usize>) -> Self {
let (width, height) = content.size();
Pager {
text: String::new(),
cursor: (0, cursor_pos.unwrap_or(0)),
height,
width,
dirty: true,
content,
initialised: true,
id: ComponentId::new_v4(),
..Default::default()
}
}
pub fn print_string(content: &mut CellBuffer, lines: &[String], colors: ThemeAttribute) {
let width = content.size().0;
debug!(colors);
for (i, l) in lines.iter().enumerate() {
write_string_to_grid(
l,
content,
colors.fg,
colors.bg,
Attr::DEFAULT,
((0, i), (width.saturating_sub(1), i)),
None,
);
if l.starts_with("⤷") {
content[(0, i)].set_fg(Color::Byte(240));
content[(0, i)].set_attrs(Attr::BOLD);
}
}
}
pub fn cursor_pos(&self) -> usize {
self.cursor.1
}
pub fn size(&self) -> (usize, usize) {
(self.width, self.height)
}
}
impl Component for Pager {
fn draw(&mut self, grid: &mut CellBuffer, area: Area, context: &mut Context) {
if !is_valid_area!(area) {
return;
}
if !self.is_dirty() {
return;
}
if !self.initialised && !self.text.is_empty() {
let mut width = width!(area);
if width < self.minimum_width {
width = self.minimum_width;
}
let lines: &[String] = if self.text_lines.0 == width.saturating_sub(2) {
&self.text_lines.1
} else {
let lines = self
.text
.split_lines_reflow(self.reflow, Some(width.saturating_sub(2)));
self.text_lines = (width.saturating_sub(2), lines);
&self.text_lines.1
};
let height = lines.len() + 2;
let mut empty_cell = Cell::with_char(' ');
empty_cell.set_fg(self.colors.fg);
empty_cell.set_bg(self.colors.bg);
let mut content = CellBuffer::new(width, height, empty_cell);
content.set_ascii_drawing(self.content.ascii_drawing);
if let Some(ref mut search) = self.search {
use melib::text_processing::search::KMP;
search.positions.clear();
for (y, l) in lines.iter().enumerate() {
search.positions.extend(
l.kmp_search(&search.pattern)
.into_iter()
.map(|offset| (y, offset)),
);
}
}
Pager::print_string(&mut content, &lines, self.colors);
#[cfg(feature = "regexp")]
{
for text_formatter in
crate::conf::text_format_regexps(context, "pager.envelope.body")
{
let t = content.insert_tag(text_formatter.tag);
for (i, l) in lines.iter().enumerate() {
for (start, end) in text_formatter.regexp.find_iter(l) {
content.set_tag(t, (start, i), (end, i));
}
}
}
}
if let Some(ref mut search) = self.search {
let results_attr = crate::conf::value(context, "pager.highlight_search");
let results_current_attr =
crate::conf::value(context, "pager.highlight_search_current");
search.cursor =
std::cmp::min(search.positions.len().saturating_sub(1), search.cursor);
for (i, (y, x)) in search.positions.iter().enumerate() {
for c in content.row_iter(*x..*x + search.pattern.grapheme_len(), *y) {
if i == search.cursor {
content[c]
.set_fg(results_current_attr.fg)
.set_bg(results_current_attr.bg)
.set_attrs(results_current_attr.attrs);
} else {
content[c]
.set_fg(results_attr.fg)
.set_bg(results_attr.bg)
.set_attrs(results_attr.attrs);
}
}
}
}
self.content = content;
self.height = height;
self.width = width;
self.initialised = true;
}
self.dirty = false;
let height = height!(area);
if let Some(mvm) = self.movement.take() {
match mvm {
PageMovement::Up(amount) => {
self.cursor.1 = self.cursor.1.saturating_sub(amount);
}
PageMovement::PageUp(multiplier) => {
self.cursor.1 = self.cursor.1.saturating_sub(height * multiplier);
}
PageMovement::Down(amount) => {
if self.cursor.1 + amount < self.height {
self.cursor.1 += amount;
}
}
PageMovement::PageDown(multiplier) => {
if self.cursor.1 + height * multiplier < self.height {
self.cursor.1 += height * multiplier;
}
}
PageMovement::Right(multiplier) => {
let offset = width!(area) / 3;
if self.cursor.0 + offset * multiplier < self.content.size().0 {
self.cursor.0 += offset * multiplier;
}
}
PageMovement::Left(multiplier) => {
let offset = width!(area) / 3;
self.cursor.0 = self.cursor.0.saturating_sub(offset * multiplier);
}
PageMovement::Home => {
self.cursor.1 = 0;
}
PageMovement::End => {
self.cursor.1 = (self.height / height) * height;
}
}
}
if self.height == 0 || self.width == 0 {
return;
}
if let Some(ref mut search) = self.search {
if !search.positions.is_empty() {
if let Some(mvm) = search.movement.take() {
match mvm {
PageMovement::Up(_) => {
if self.cursor.1 > search.positions[search.cursor].0 {
self.cursor.1 = search.positions[search.cursor].0;
}
}
PageMovement::Down(_) => {
if self.cursor.1 + height < search.positions[search.cursor].0 {
self.cursor.1 = search.positions[search.cursor].0;
}
}
_ => {}
}
}
}
}
clear_area(grid, area, crate::conf::value(context, "theme_default"));
let (width, height) = self.content.size();
let (cols, rows) = (width!(area), height!(area));
self.cursor = (
std::cmp::min(width.saturating_sub(cols), self.cursor.0),
std::cmp::min(height.saturating_sub(rows), self.cursor.1),
);
copy_area(
grid,
&self.content,
area,
(
(
std::cmp::min((width - 1).saturating_sub(cols), self.cursor.0),
std::cmp::min((height - 1).saturating_sub(rows), self.cursor.1),
),
(
std::cmp::min(self.cursor.0 + cols, width - 1),
std::cmp::min(self.cursor.1 + rows, height - 1),
),
),
);
context.dirty_areas.push_back(area);
}
fn process_event(&mut self, event: &mut UIEvent, context: &mut Context) -> bool {
let shortcuts = self.get_shortcuts(context);
match event {
UIEvent::Input(ref key)
if shortcut!(key == shortcuts[Self::DESCRIPTION]["scroll_up"]) =>
{
self.cursor.1 = self.cursor.1.saturating_sub(1);
self.dirty = true;
return true;
}
UIEvent::Input(ref key)
if shortcut!(key == shortcuts[Self::DESCRIPTION]["scroll_down"]) =>
{
self.cursor.1 = self.cursor.1 + 1;
self.dirty = true;
return true;
}
UIEvent::Input(Key::Home) => {
self.movement = Some(PageMovement::Home);
self.dirty = true;
return true;
}
UIEvent::Input(Key::End) => {
self.movement = Some(PageMovement::End);
self.dirty = true;
return true;
}
UIEvent::Input(Key::Left) => {
self.movement = Some(PageMovement::Left(1));
self.dirty = true;
return true;
}
UIEvent::Input(Key::Right) => {
self.movement = Some(PageMovement::Right(1));
self.dirty = true;
return true;
}
UIEvent::Input(ref key)
if shortcut!(key == shortcuts[Self::DESCRIPTION]["page_up"]) =>
{
self.movement = Some(PageMovement::PageUp(1));
self.dirty = true;
return true;
}
UIEvent::Input(ref key)
if shortcut!(key == shortcuts[Self::DESCRIPTION]["page_down"]) =>
{
self.movement = Some(PageMovement::PageDown(1));
self.dirty = true;
return true;
}
UIEvent::ChangeMode(UIMode::Normal) => {
self.dirty = true;
}
UIEvent::Action(View(Pipe(ref bin, ref args))) => {
use std::io::Write;
use std::process::{Command, Stdio};
let mut command_obj = match Command::new(bin)
.args(args.as_slice())
.stdin(Stdio::piped())
.stdout(Stdio::piped())
.spawn()
{
Ok(o) => o,
Err(e) => {
context.replies.push_back(UIEvent::StatusEvent(
StatusEvent::DisplayMessage(format!(
"Could not pipe to {}: {}",
bin, e
)),
));
return true;
}
};
let stdin = command_obj.stdin.as_mut().expect("failed to open stdin");
stdin
.write_all(self.text.as_bytes())
.expect("Failed to write to stdin");
context
.replies
.push_back(UIEvent::StatusEvent(StatusEvent::DisplayMessage(format!(
"Pager text piped to '{}{}{}'",
&bin,
if args.is_empty() { "" } else { " " },
args.join(" ")
))));
return true;
}
UIEvent::Action(Action::Listing(ListingAction::Search(pattern))) => {
self.search = Some(SearchPattern {
pattern: pattern.to_string(),
positions: vec![],
cursor: 0,
movement: Some(PageMovement::Home),
});
self.initialised = false;
self.dirty = true;
return true;
}
UIEvent::Input(Key::Char('n')) if self.search.is_some() => {
if let Some(ref mut search) = self.search {
search.movement = Some(PageMovement::Down(1));
search.cursor += 1;
} else {
unsafe {
std::hint::unreachable_unchecked();
}
}
self.initialised = false;
self.dirty = true;
return true;
}
UIEvent::Input(Key::Char('N')) if self.search.is_some() => {
if let Some(ref mut search) = self.search {
search.movement = Some(PageMovement::Up(1));
search.cursor = search.cursor.saturating_sub(1);
} else {
unsafe {
std::hint::unreachable_unchecked();
}
}
self.initialised = false;
self.dirty = true;
return true;
}
UIEvent::Input(Key::Esc) if self.search.is_some() => {
self.search = None;
self.initialised = false;
self.dirty = true;
return true;
}
UIEvent::Resize => {
self.initialised = false;
self.dirty = true;
}
_ => {}
}
false
}
fn is_dirty(&self) -> bool {
self.dirty
}
fn set_dirty(&mut self, value: bool) {
self.dirty = value;
}
fn get_shortcuts(&self, context: &Context) -> ShortcutMaps {
let config_map: IndexMap<&'static str, Key> = context.settings.shortcuts.pager.key_values();
let mut ret: ShortcutMaps = Default::default();
ret.insert(Pager::DESCRIPTION, config_map);
ret
}
fn id(&self) -> ComponentId {
self.id
}
fn set_id(&mut self, id: ComponentId) {
self.id = id;
}
}
Loading…
Cancel
Save