@ -7,11 +7,12 @@ use crate::{
ui ::{
self ,
document ::{ render_document , LineDecoration , LinePos , TextRenderer } ,
fuzzy_match ::FuzzyQuery ,
EditorView ,
} ,
} ;
use futures_util ::{ future ::BoxFuture , FutureExt } ;
use nucleo ::pattern ::CaseMatching ;
use nucleo ::{ Config , Nucleo , Utf32String } ;
use tui ::{
buffer ::Buffer as Surface ,
layout ::Constraint ,
@ -19,16 +20,23 @@ use tui::{
widgets ::{ Block , BorderType , Borders , Cell , Table } ,
} ;
use fuzzy_matcher ::skim ::SkimMatcherV2 as Matcher ;
use tui ::widgets ::Widget ;
use std ::cmp ::{ self , Ordering } ;
use std ::{ collections ::HashMap , io ::Read , path ::PathBuf } ;
use std ::{
collections ::HashMap ,
io ::Read ,
path ::PathBuf ,
sync ::{
atomic ::{ self , AtomicBool } ,
Arc ,
} ,
} ;
use crate ::ui ::{ Prompt , PromptEvent } ;
use helix_core ::{
char_idx_at_visual_offset , movement ::Direction , text_annotations ::TextAnnotations ,
unicode ::segmentation ::UnicodeSegmentation , Position , Syntax ,
char_idx_at_visual_offset , fuzzy ::MATCHER , movement ::Direction ,
text_annotations ::TextAnnotations , unicode ::segmentation ::UnicodeSegmentation , Position ,
Syntax ,
} ;
use helix_view ::{
editor ::Action ,
@ -38,6 +46,7 @@ use helix_view::{
Document , DocumentId , Editor ,
} ;
pub const ID : & str = "picker" ;
use super ::{ menu ::Item , overlay ::Overlay } ;
pub const MIN_AREA_WIDTH_FOR_PREVIEW : u16 = 72 ;
@ -103,9 +112,9 @@ impl Preview<'_, '_> {
/// Alternate text to show for the preview.
fn placeholder ( & self ) -> & str {
match * self {
Self ::EditorDocument ( _ ) = > "< File preview >",
Self ::EditorDocument ( _ ) = > "< Invalid file location >",
Self ::Cached ( preview ) = > match preview {
CachedPreview ::Document ( _ ) = > "< File preview >",
CachedPreview ::Document ( _ ) = > "< Invalid file location >",
CachedPreview ::Binary = > "<Binary file>" ,
CachedPreview ::LargeFile = > "<File too large to preview>" ,
CachedPreview ::NotFound = > "<File not found>" ,
@ -114,20 +123,71 @@ impl Preview<'_, '_> {
}
}
fn item_to_nucleo < T : Item > ( item : T , editor_data : & T ::Data ) -> Option < ( T , Utf32String ) > {
let row = item . format ( editor_data ) ;
let mut cells = row . cells . iter ( ) ;
let mut text = String ::with_capacity ( row . cell_text ( ) . map ( | cell | cell . len ( ) ) . sum ( ) ) ;
let cell = cells . next ( ) ? ;
if let Some ( cell ) = cell . content . lines . first ( ) {
for span in & cell . 0 {
text . push_str ( & span . content ) ;
}
}
for cell in cells {
text . push ( ' ' ) ;
if let Some ( cell ) = cell . content . lines . first ( ) {
for span in & cell . 0 {
text . push_str ( & span . content ) ;
}
}
}
Some ( ( item , text . into ( ) ) )
}
pub struct Injector < T : Item > {
dst : nucleo ::Injector < T > ,
editor_data : Arc < T ::Data > ,
shutown : Arc < AtomicBool > ,
}
impl < T : Item > Clone for Injector < T > {
fn clone ( & self ) -> Self {
Injector {
dst : self . dst . clone ( ) ,
editor_data : self . editor_data . clone ( ) ,
shutown : self . shutown . clone ( ) ,
}
}
}
pub struct InjectorShutdown ;
impl < T : Item > Injector < T > {
pub fn push ( & self , item : T ) -> Result < ( ) , InjectorShutdown > {
if self . shutown . load ( atomic ::Ordering ::Relaxed ) {
return Err ( InjectorShutdown ) ;
}
if let Some ( ( item , matcher_text ) ) = item_to_nucleo ( item , & self . editor_data ) {
self . dst . push ( item , | dst | dst [ 0 ] = matcher_text ) ;
}
Ok ( ( ) )
}
}
pub struct Picker < T : Item > {
options : Vec < T > ,
editor_data : T ::Data ,
// filter: String,
matcher : Box < Matcher > ,
matches : Vec < PickerMatch > ,
editor_data : Arc < T ::Data > ,
shutdown : Arc < AtomicBool > ,
matcher : Nucleo < T > ,
/// Current height of the completions box
completion_height : u16 ,
cursor : usize ,
// pattern: String,
cursor : u32 ,
prompt : Prompt ,
previous_pattern : ( String , FuzzyQuery ) ,
previous_pattern : String ,
/// Whether to show the preview panel (default true)
show_preview : bool ,
/// Constraints for tabular formatting
@ -144,10 +204,59 @@ pub struct Picker<T: Item> {
}
impl < T : Item + ' static > Picker < T > {
pub fn stream ( editor_data : T ::Data ) -> ( Nucleo < T > , Injector < T > ) {
let matcher = Nucleo ::new (
Config ::DEFAULT ,
Arc ::new ( helix_event ::request_redraw ) ,
None ,
1 ,
) ;
let streamer = Injector {
dst : matcher . injector ( ) ,
editor_data : Arc ::new ( editor_data ) ,
shutown : Arc ::new ( AtomicBool ::new ( false ) ) ,
} ;
( matcher , streamer )
}
pub fn new (
options : Vec < T > ,
editor_data : T ::Data ,
callback_fn : impl Fn ( & mut Context , & T , Action ) + ' static ,
) -> Self {
let matcher = Nucleo ::new (
Config ::DEFAULT ,
Arc ::new ( helix_event ::request_redraw ) ,
None ,
1 ,
) ;
let injector = matcher . injector ( ) ;
for item in options {
if let Some ( ( item , matcher_text ) ) = item_to_nucleo ( item , & editor_data ) {
injector . push ( item , | dst | dst [ 0 ] = matcher_text ) ;
}
}
Self ::with (
matcher ,
Arc ::new ( editor_data ) ,
Arc ::new ( AtomicBool ::new ( false ) ) ,
callback_fn ,
)
}
pub fn with_stream (
matcher : Nucleo < T > ,
injector : Injector < T > ,
callback_fn : impl Fn ( & mut Context , & T , Action ) + ' static ,
) -> Self {
Self ::with ( matcher , injector . editor_data , injector . shutown , callback_fn )
}
fn with (
matcher : Nucleo < T > ,
editor_data : Arc < T ::Data > ,
shutdown : Arc < AtomicBool > ,
callback_fn : impl Fn ( & mut Context , & T , Action ) + ' static ,
) -> Self {
let prompt = Prompt ::new (
"" . into ( ) ,
@ -156,14 +265,13 @@ impl<T: Item + 'static> Picker<T> {
| _editor : & mut Context , _pattern : & str , _event : PromptEvent | { } ,
) ;
let mut picker = Self {
options ,
Self {
matcher ,
editor_data ,
matcher : Box ::default ( ) ,
matches : Vec ::new ( ) ,
shutdown ,
cursor : 0 ,
prompt ,
previous_pattern : ( String ::new ( ) , FuzzyQuery ::default ( ) ) ,
previous_pattern : String ::new ( ) ,
truncate_start : true ,
show_preview : true ,
callback_fn : Box ::new ( callback_fn ) ,
@ -172,24 +280,15 @@ impl<T: Item + 'static> Picker<T> {
preview_cache : HashMap ::new ( ) ,
read_buffer : Vec ::with_capacity ( 1024 ) ,
file_fn : None ,
} ;
picker . calculate_column_widths ( ) ;
// scoring on empty input
// TODO: just reuse score()
picker
. matches
. extend ( picker . options . iter ( ) . enumerate ( ) . map ( | ( index , option ) | {
let text = option . filter_text ( & picker . editor_data ) ;
PickerMatch {
index ,
score : 0 ,
len : text . chars ( ) . count ( ) ,
}
} ) ) ;
}
}
picker
pub fn injector ( & self ) -> Injector < T > {
Injector {
dst : self . matcher . injector ( ) ,
editor_data : self . editor_data . clone ( ) ,
shutown : self . shutdown . clone ( ) ,
}
}
pub fn truncate_start ( mut self , truncate_start : bool ) -> Self {
@ -202,122 +301,25 @@ impl<T: Item + 'static> Picker<T> {
preview_fn : impl Fn ( & Editor , & T ) -> Option < FileLocation > + ' static ,
) -> Self {
self . file_fn = Some ( Box ::new ( preview_fn ) ) ;
// assumption: if we have a preview we are matching paths... If this is ever
// not true this could be a separate builder function
self . matcher . update_config ( Config ::DEFAULT . match_paths ( ) ) ;
self
}
pub fn set_options ( & mut self , new_options : Vec < T > ) {
self . options = new_options ;
self . cursor = 0 ;
self . force_score ( ) ;
self . calculate_column_widths ( ) ;
}
/// Calculate the width constraints using the maximum widths of each column
/// for the current options.
fn calculate_column_widths ( & mut self ) {
let n = self
. options
. first ( )
. map ( | option | option . format ( & self . editor_data ) . cells . len ( ) )
. unwrap_or_default ( ) ;
let max_lens = self . options . iter ( ) . fold ( vec! [ 0 ; n ] , | mut acc , option | {
let row = option . format ( & self . editor_data ) ;
// maintain max for each column
for ( acc , cell ) in acc . iter_mut ( ) . zip ( row . cells . iter ( ) ) {
let width = cell . content . width ( ) ;
if width > * acc {
* acc = width ;
}
self . matcher . restart ( false ) ;
let injector = self . matcher . injector ( ) ;
for item in new_options {
if let Some ( ( item , matcher_text ) ) = item_to_nucleo ( item , & self . editor_data ) {
injector . push ( item , | dst | dst [ 0 ] = matcher_text ) ;
}
acc
} ) ;
self . widths = max_lens
. into_iter ( )
. map ( | len | Constraint ::Length ( len as u16 ) )
. collect ( ) ;
}
pub fn score ( & mut self ) {
let pattern = self . prompt . line ( ) ;
if pattern = = & self . previous_pattern . 0 {
return ;
}
let ( query , is_refined ) = self
. previous_pattern
. 1
. refine ( pattern , & self . previous_pattern . 0 ) ;
if pattern . is_empty ( ) {
// Fast path for no pattern.
self . matches . clear ( ) ;
self . matches
. extend ( self . options . iter ( ) . enumerate ( ) . map ( | ( index , option ) | {
let text = option . filter_text ( & self . editor_data ) ;
PickerMatch {
index ,
score : 0 ,
len : text . chars ( ) . count ( ) ,
}
} ) ) ;
} else if is_refined {
// optimization: if the pattern is a more specific version of the previous one
// then we can score the filtered set.
self . matches . retain_mut ( | pmatch | {
let option = & self . options [ pmatch . index ] ;
let text = option . sort_text ( & self . editor_data ) ;
match query . fuzzy_match ( & text , & self . matcher ) {
Some ( s ) = > {
// Update the score
pmatch . score = s ;
true
}
None = > false ,
}
} ) ;
self . matches . sort_unstable ( ) ;
} else {
self . force_score ( ) ;
}
// reset cursor position
self . cursor = 0 ;
let pattern = self . prompt . line ( ) ;
self . previous_pattern . 0. clone_from ( pattern ) ;
self . previous_pattern . 1 = query ;
}
pub fn force_score ( & mut self ) {
let pattern = self . prompt . line ( ) ;
let query = FuzzyQuery ::new ( pattern ) ;
self . matches . clear ( ) ;
self . matches . extend (
self . options
. iter ( )
. enumerate ( )
. filter_map ( | ( index , option ) | {
let text = option . filter_text ( & self . editor_data ) ;
query
. fuzzy_match ( & text , & self . matcher )
. map ( | score | PickerMatch {
index ,
score ,
len : text . chars ( ) . count ( ) ,
} )
} ) ,
) ;
self . matches . sort_unstable ( ) ;
}
/// Move the cursor by a number of lines, either down (`Forward`) or up (`Backward`)
pub fn move_by ( & mut self , amount : u size , direction : Direction ) {
let len = self . matche s. len ( ) ;
pub fn move_by ( & mut self , amount : u32 , direction : Direction ) {
let len = self . matcher . snapshot ( ) . matched_item_count ( ) ;
if len = = 0 {
// No results, can't move.
@ -336,12 +338,12 @@ impl<T: Item + 'static> Picker<T> {
/// Move the cursor down by exactly one page. After the last page comes the first page.
pub fn page_up ( & mut self ) {
self . move_by ( self . completion_height as u size , Direction ::Backward ) ;
self . move_by ( self . completion_height as u 32 , Direction ::Backward ) ;
}
/// Move the cursor up by exactly one page. After the first page comes the last page.
pub fn page_down ( & mut self ) {
self . move_by ( self . completion_height as u size , Direction ::Forward ) ;
self . move_by ( self . completion_height as u 32 , Direction ::Forward ) ;
}
/// Move the cursor to the first entry
@ -351,13 +353,18 @@ impl<T: Item + 'static> Picker<T> {
/// Move the cursor to the last entry
pub fn to_end ( & mut self ) {
self . cursor = self . matches . len ( ) . saturating_sub ( 1 ) ;
self . cursor = self
. matcher
. snapshot ( )
. matched_item_count ( )
. saturating_sub ( 1 ) ;
}
pub fn selection ( & self ) -> Option < & T > {
self . matches
. get ( self . cursor )
. map ( | pmatch | & self . options [ pmatch . index ] )
self . matcher
. snapshot ( )
. get_matched_item ( self . cursor )
. map ( | item | item . data )
}
pub fn toggle_preview ( & mut self ) {
@ -366,8 +373,17 @@ impl<T: Item + 'static> Picker<T> {
fn prompt_handle_event ( & mut self , event : & Event , cx : & mut Context ) -> EventResult {
if let EventResult ::Consumed ( _ ) = self . prompt . handle_event ( event , cx ) {
// TODO: recalculate only if pattern changed
self . score ( ) ;
let pattern = self . prompt . line ( ) ;
// TODO: better track how the pattern has changed
if pattern ! = & self . previous_pattern {
self . matcher . pattern . reparse (
0 ,
pattern ,
CaseMatching ::Smart ,
pattern . starts_with ( & self . previous_pattern ) ,
) ;
self . previous_pattern = pattern . clone ( ) ;
}
}
EventResult ::Consumed ( None )
}
@ -411,12 +427,9 @@ impl<T: Item + 'static> Picker<T> {
( size , _ ) if size > MAX_FILE_SIZE_FOR_PREVIEW = > {
CachedPreview ::LargeFile
}
_ = > {
// TODO: enable syntax highlighting; blocked by async rendering
Document ::open ( path , None , None , editor . config . clone ( ) )
. map ( | doc | CachedPreview ::Document ( Box ::new ( doc ) ) )
. unwrap_or ( CachedPreview ::NotFound )
}
_ = > Document ::open ( path , None , None , editor . config . clone ( ) )
. map ( | doc | CachedPreview ::Document ( Box ::new ( doc ) ) )
. unwrap_or ( CachedPreview ::NotFound ) ,
} ,
)
. unwrap_or ( CachedPreview ::NotFound ) ;
@ -461,9 +474,13 @@ impl<T: Item + 'static> Picker<T> {
log ::info ! ( "highlighting picker item failed" ) ;
return ;
} ;
let Some ( Overlay {
content : picker , ..
} ) = compositor . find ::< Overlay < Self > > ( )
let picker = match compositor . find ::< Overlay < Self > > ( ) {
Some ( Overlay { content , .. } ) = > Some ( content ) ,
None = > compositor
. find ::< Overlay < DynamicPicker < T > > > ( )
. map ( | overlay | & mut overlay . content . file_picker ) ,
} ;
let Some ( picker ) = picker
else {
log ::info ! ( "picker closed before syntax highlighting finished" ) ;
return ;
@ -495,6 +512,14 @@ impl<T: Item + 'static> Picker<T> {
}
fn render_picker ( & mut self , area : Rect , surface : & mut Surface , cx : & mut Context ) {
let status = self . matcher . tick ( 10 ) ;
let snapshot = self . matcher . snapshot ( ) ;
if status . changed {
self . cursor = self
. cursor
. min ( snapshot . matched_item_count ( ) . saturating_sub ( 1 ) )
}
let text_style = cx . editor . theme . get ( "ui.text" ) ;
let selected = cx . editor . theme . get ( "ui.text.focus" ) ;
let highlight_style = cx . editor . theme . get ( "special" ) . add_modifier ( Modifier ::BOLD ) ;
@ -515,8 +540,15 @@ impl<T: Item + 'static> Picker<T> {
// -- Render the input bar:
let area = inner . clip_left ( 1 ) . with_height ( 1 ) ;
// render the prompt first since it will clear its background
self . prompt . render ( area , surface , cx ) ;
let count = format! ( "{}/{}" , self . matches . len ( ) , self . options . len ( ) ) ;
let count = format! (
"{}{}/{}" ,
if status . running { "(running) " } else { "" } ,
snapshot . matched_item_count ( ) ,
snapshot . item_count ( ) ,
) ;
surface . set_stringn (
( area . x + area . width ) . saturating_sub ( count . len ( ) as u16 + 1 ) ,
area . y ,
@ -525,8 +557,6 @@ impl<T: Item + 'static> Picker<T> {
text_style ,
) ;
self . prompt . render ( area , surface , cx ) ;
// -- Separator
let sep_style = cx . editor . theme . get ( "ui.background.separator" ) ;
let borders = BorderType ::line_symbols ( BorderType ::Plain ) ;
@ -539,106 +569,89 @@ impl<T: Item + 'static> Picker<T> {
// -- Render the contents:
// subtract area of prompt from top
let inner = inner . clip_top ( 2 ) ;
let rows = inner . height ;
let offset = self . cursor - ( self . cursor % std ::cmp ::max ( 1 , rows as usize ) ) ;
let rows = inner . height as u32 ;
let offset = self . cursor - ( self . cursor % std ::cmp ::max ( 1 , rows ) ) ;
let cursor = self . cursor . saturating_sub ( offset ) ;
let end = offset
. saturating_add ( rows )
. min ( snapshot . matched_item_count ( ) ) ;
let mut indices = Vec ::new ( ) ;
let mut matcher = MATCHER . lock ( ) ;
matcher . config = Config ::DEFAULT ;
if self . file_fn . is_some ( ) {
matcher . config . set_match_paths ( )
}
let options = self
. matches
. iter ( )
. skip ( offset )
. take ( rows as usize )
. map ( | pmatch | & self . options [ pmatch . index ] )
. map ( | option | option . format ( & self . editor_data ) )
. map ( | mut row | {
const TEMP_CELL_SEP : & str = " " ;
let line = row . cell_text ( ) . fold ( String ::new ( ) , | mut s , frag | {
s . push_str ( & frag ) ;
s . push_str ( TEMP_CELL_SEP ) ;
s
} ) ;
// Items are filtered by using the text returned by menu::Item::filter_text
// but we do highlighting here using the text in Row and therefore there
// might be inconsistencies. This is the best we can do since only the
// text in Row is displayed to the end user.
let ( _score , highlights ) = FuzzyQuery ::new ( self . prompt . line ( ) )
. fuzzy_indices ( & line , & self . matcher )
. unwrap_or_default ( ) ;
let highlight_byte_ranges : Vec < _ > = line
. char_indices ( )
. enumerate ( )
. filter_map ( | ( char_idx , ( byte_offset , ch ) ) | {
highlights
. contains ( & char_idx )
. then ( | | byte_offset .. byte_offset + ch . len_utf8 ( ) )
} )
. collect ( ) ;
// The starting byte index of the current (iterating) cell
let mut cell_start_byte_offset = 0 ;
for cell in row . cells . iter_mut ( ) {
let spans = match cell . content . lines . get ( 0 ) {
Some ( s ) = > s ,
None = > {
cell_start_byte_offset + = TEMP_CELL_SEP . len ( ) ;
continue ;
}
} ;
let options = snapshot . matched_items ( offset .. end ) . map ( | item | {
snapshot . pattern ( ) . column_pattern ( 0 ) . indices (
item . matcher_columns [ 0 ] . slice ( .. ) ,
& mut matcher ,
& mut indices ,
) ;
indices . sort_unstable ( ) ;
indices . dedup ( ) ;
let mut row = item . data . format ( & self . editor_data ) ;
let mut grapheme_idx = 0 u32 ;
let mut indices = indices . drain ( .. ) ;
let mut next_highlight_idx = indices . next ( ) . unwrap_or ( u32 ::MAX ) ;
if self . widths . len ( ) < row . cells . len ( ) {
self . widths . resize ( row . cells . len ( ) , Constraint ::Length ( 0 ) ) ;
}
let mut widths = self . widths . iter_mut ( ) ;
for cell in & mut row . cells {
let Some ( Constraint ::Length ( max_width ) ) = widths . next ( ) else {
unreachable! ( ) ;
} ;
let mut cell_len = 0 ;
let graphemes_with_style : Vec < _ > = spans
. 0
. iter ( )
. flat_map ( | span | {
span . content
. grapheme_indices ( true )
. zip ( std ::iter ::repeat ( span . style ) )
} )
. map ( | ( ( grapheme_byte_offset , grapheme ) , style ) | {
cell_len + = grapheme . len ( ) ;
let start = cell_start_byte_offset ;
let grapheme_byte_range =
grapheme_byte_offset .. grapheme_byte_offset + grapheme . len ( ) ;
if highlight_byte_ranges . iter ( ) . any ( | hl_rng | {
hl_rng . start > = start + grapheme_byte_range . start
& & hl_rng . end < = start + grapheme_byte_range . end
} ) {
( grapheme , style . patch ( highlight_style ) )
} else {
( grapheme , style )
}
} )
. collect ( ) ;
let mut span_list : Vec < ( String , Style ) > = Vec ::new ( ) ;
for ( grapheme , style ) in graphemes_with_style {
if span_list . last ( ) . map ( | ( _ , sty ) | sty ) = = Some ( & style ) {
let ( string , _ ) = span_list . last_mut ( ) . unwrap ( ) ;
string . push_str ( grapheme ) ;
// merge index highlights on top of existing hightlights
let mut span_list = Vec ::new ( ) ;
let mut current_span = String ::new ( ) ;
let mut current_style = Style ::default ( ) ;
let mut width = 0 ;
let spans : & [ Span ] = cell . content . lines . first ( ) . map_or ( & [ ] , | it | it . 0. as_slice ( ) ) ;
for span in spans {
// this looks like a bug on first glance, we are iterating
// graphemes but treating them as char indices. The reason that
// this is correct is that nucleo will only ever consider the first char
// of a grapheme (and discard the rest of the grapheme) so the indices
// returned by nucleo are essentially grapheme indecies
for grapheme in span . content . graphemes ( true ) {
let style = if grapheme_idx = = next_highlight_idx {
next_highlight_idx = indices . next ( ) . unwrap_or ( u32 ::MAX ) ;
span . style . patch ( highlight_style )
} else {
span_list . push ( ( String ::from ( grapheme ) , style ) )
span . style
} ;
if style ! = current_style {
if ! current_span . is_empty ( ) {
span_list . push ( Span ::styled ( current_span , current_style ) )
}
current_span = String ::new ( ) ;
current_style = style ;
}
current_span . push_str ( grapheme ) ;
grapheme_idx + = 1 ;
}
width + = span . width ( ) ;
}
let spans : Vec < Span > = span_list
. into_iter ( )
. map ( | ( string , style ) | Span ::styled ( string , style ) )
. collect ( ) ;
let spans : Spans = spans . into ( ) ;
* cell = Cell ::from ( spans ) ;
span_list . push ( Span ::styled ( current_span , current_style ) ) ;
if width as u16 > * max_width {
* max_width = width as u16 ;
}
* cell = Cell ::from ( Spans ::from ( span_list ) ) ;
cell_start_byte_offset + = cell_len + TEMP_CELL_SEP . len ( ) ;
// spacer
if grapheme_idx = = next_highlight_idx {
next_highlight_idx = indices . next ( ) . unwrap_or ( u32 ::MAX ) ;
}
grapheme_idx + = 1 ;
}
row
} ) ;
row
} ) ;
let table = Table ::new ( options )
. style ( text_style )
@ -654,7 +667,7 @@ impl<T: Item + 'static> Picker<T> {
surface ,
& mut TableState {
offset : 0 ,
selected : Some ( cursor ) ,
selected : Some ( cursor as usize ) ,
} ,
self . truncate_start ,
) ;
@ -680,8 +693,14 @@ impl<T: Item + 'static> Picker<T> {
if let Some ( ( path , range ) ) = self . current_file ( cx . editor ) {
let preview = self . get_preview ( path , cx . editor ) ;
let doc = match preview . document ( ) {
Some ( doc ) = > doc ,
None = > {
Some ( doc )
if range . map_or ( true , | ( start , end ) | {
start < = end & & end < = doc . text ( ) . len_lines ( )
} ) = >
{
doc
}
_ = > {
let alt_text = preview . placeholder ( ) ;
let x = inner . x + inner . width . saturating_sub ( alt_text . len ( ) as u16 ) / 2 ;
let y = inner . y + inner . height / 2 ;
@ -691,18 +710,30 @@ impl<T: Item + 'static> Picker<T> {
} ;
let mut offset = ViewPosition ::default ( ) ;
if let Some ( range ) = range {
let text_fmt = doc . text_format ( inner . width , None ) ;
let annotations = TextAnnotations ::default ( ) ;
( offset . anchor , offset . vertical_offset ) = char_idx_at_visual_offset (
doc . text ( ) . slice ( .. ) ,
doc . text ( ) . line_to_char ( range . 0 ) ,
// align to middle
- ( inner . height as isize / 2 ) ,
0 ,
& text_fmt ,
& annotations ,
) ;
if let Some ( ( start_line , end_line ) ) = range {
let height = end_line - start_line ;
let text = doc . text ( ) . slice ( .. ) ;
let start = text . line_to_char ( start_line ) ;
let middle = text . line_to_char ( start_line + height / 2 ) ;
if height < inner . height as usize {
let text_fmt = doc . text_format ( inner . width , None ) ;
let annotations = TextAnnotations ::default ( ) ;
( offset . anchor , offset . vertical_offset ) = char_idx_at_visual_offset (
text ,
middle ,
// align to middle
- ( inner . height as isize / 2 ) ,
0 ,
& text_fmt ,
& annotations ,
) ;
if start < offset . anchor {
offset . anchor = start ;
offset . vertical_offset = 0 ;
}
} else {
offset . anchor = start ;
}
}
let mut highlights = EditorView ::doc_syntax_highlights (
@ -755,7 +786,7 @@ impl<T: Item + 'static> Picker<T> {
}
}
impl < T : Item + ' static > Component for Picker < T > {
impl < T : Item + ' static + Send + Sync > Component for Picker < T > {
fn render ( & mut self , area : Rect , surface : & mut Surface , cx : & mut Context ) {
// +---------+ +---------+
// |prompt | |preview |
@ -794,11 +825,28 @@ impl<T: Item + 'static> Component for Picker<T> {
_ = > return EventResult ::Ignored ( None ) ,
} ;
let close_fn =
EventResult ::Consumed ( Some ( Box ::new ( | compositor : & mut Compositor , _ctx | {
// remove the layer
compositor . last_picker = compositor . pop ( ) ;
} ) ) ) ;
let close_fn = | picker : & mut Self | {
// if the picker is very large don't store it as last_picker to avoid
// excessive memory consumption
let callback : compositor ::Callback = if picker . matcher . snapshot ( ) . item_count ( ) > 100_000
{
Box ::new ( | compositor : & mut Compositor , _ctx | {
// remove the layer
compositor . pop ( ) ;
} )
} else {
// stop streaming in new items in the background, really we should
// be restarting the stream somehow once the picker gets
// reopened instead (like for an FS crawl) that would also remove the
// need for the special case above but that is pretty tricky
picker . shutdown . store ( true , atomic ::Ordering ::Relaxed ) ;
Box ::new ( | compositor : & mut Compositor , _ctx | {
// remove the layer
compositor . last_picker = compositor . pop ( ) ;
} )
} ;
EventResult ::Consumed ( Some ( callback ) )
} ;
// So that idle timeout retriggers
ctx . editor . reset_idle_timer ( ) ;
@ -822,9 +870,7 @@ impl<T: Item + 'static> Component for Picker<T> {
key ! ( End ) = > {
self . to_end ( ) ;
}
key ! ( Esc ) | ctrl ! ( 'c' ) = > {
return close_fn ;
}
key ! ( Esc ) | ctrl ! ( 'c' ) = > return close_fn ( self ) ,
alt ! ( Enter ) = > {
if let Some ( option ) = self . selection ( ) {
( self . callback_fn ) ( ctx , option , Action ::Load ) ;
@ -834,19 +880,19 @@ impl<T: Item + 'static> Component for Picker<T> {
if let Some ( option ) = self . selection ( ) {
( self . callback_fn ) ( ctx , option , Action ::Replace ) ;
}
return close_fn
return close_fn (self ) ;
}
ctrl ! ( 's' ) = > {
if let Some ( option ) = self . selection ( ) {
( self . callback_fn ) ( ctx , option , Action ::HorizontalSplit ) ;
}
return close_fn
return close_fn (self ) ;
}
ctrl ! ( 'v' ) = > {
if let Some ( option ) = self . selection ( ) {
( self . callback_fn ) ( ctx , option , Action ::VerticalSplit ) ;
}
return close_fn
return close_fn (self ) ;
}
ctrl ! ( 't' ) = > {
self . toggle_preview ( ) ;
@ -874,30 +920,15 @@ impl<T: Item + 'static> Component for Picker<T> {
self . completion_height = height . saturating_sub ( 4 ) ;
Some ( ( width , height ) )
}
}
#[ derive(PartialEq, Eq, Debug) ]
struct PickerMatch {
score : i64 ,
index : usize ,
len : usize ,
}
impl PickerMatch {
fn key ( & self ) -> impl Ord {
( cmp ::Reverse ( self . score ) , self . len , self . index )
}
}
impl PartialOrd for PickerMatch {
fn partial_cmp ( & self , other : & Self ) -> Option < Ordering > {
Some ( self . cmp ( other ) )
fn id ( & self ) -> Option < & ' static str > {
Some ( ID )
}
}
impl Ord for PickerMatch {
fn cmp ( & self , other : & Self ) -> Ordering {
self . key( ) . cmp ( & other . key ( ) )
impl < T : Item > Drop for Picker < T > {
fn drop ( & mut self ) {
// ensure we cancel any ongoing background threads streaming into the picker
self . shutdown . store ( true , atomic ::Ordering ::Relaxed )
}
}
@ -910,15 +941,13 @@ pub type DynQueryCallback<T> =
/// A picker that updates its contents via a callback whenever the
/// query string changes. Useful for live grep, workspace symbols, etc.
pub struct DynamicPicker < T : ui ::menu ::Item + Send > {
pub struct DynamicPicker < T : ui ::menu ::Item + Send + Sync > {
file_picker : Picker < T > ,
query_callback : DynQueryCallback < T > ,
query : String ,
}
impl < T : ui ::menu ::Item + Send > DynamicPicker < T > {
pub const ID : & ' static str = "dynamic-picker" ;
impl < T : ui ::menu ::Item + Send + Sync > DynamicPicker < T > {
pub fn new ( file_picker : Picker < T > , query_callback : DynQueryCallback < T > ) -> Self {
Self {
file_picker ,
@ -928,7 +957,7 @@ impl<T: ui::menu::Item + Send> DynamicPicker<T> {
}
}
impl < T : Item + Send + ' static > Component for DynamicPicker < T > {
impl < T : Item + Send + Sync + ' static > Component for DynamicPicker < T > {
fn render ( & mut self , area : Rect , surface : & mut Surface , cx : & mut Context ) {
self . file_picker . render ( area , surface , cx ) ;
}
@ -950,7 +979,7 @@ impl<T: Item + Send + 'static> Component for DynamicPicker<T> {
let callback = Callback ::EditorCompositor ( Box ::new ( move | editor , compositor | {
// Wrapping of pickers in overlay is done outside the picker code,
// so this is fragile and will break if wrapped in some other widget.
let picker = match compositor . find_id ::< Overlay < DynamicPicker < T > > > ( Self ::ID ) {
let picker = match compositor . find_id ::< Overlay < DynamicPicker < T > > > ( ID ) {
Some ( overlay ) = > & mut overlay . content . file_picker ,
None = > return ,
} ;
@ -971,6 +1000,6 @@ impl<T: Item + Send + 'static> Component for DynamicPicker<T> {
}
fn id ( & self ) -> Option < & ' static str > {
Some ( Self ::ID )
Some ( ID )
}
}
mattwparas
1 year ago