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feat(mappings): show leaf node in preview window #518

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Jan 26, 2025
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feat(mappings): show leaf node in preview window #518

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48 changes: 36 additions & 12 deletions autoload/fern/scheme/file/mapping.vim
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -1,18 +1,25 @@
let s:Promise = vital#fern#import('Async.Promise')

function! fern#scheme#file#mapping#init(disable_default_mappings) abort
nnoremap <buffer><silent> <Plug>(fern-action-new-path) :<C-u>call <SID>call('new_path')<CR>
nnoremap <buffer><silent> <Plug>(fern-action-new-file) :<C-u>call <SID>call('new_file')<CR>
nnoremap <buffer><silent> <Plug>(fern-action-new-dir) :<C-u>call <SID>call('new_dir')<CR>
nnoremap <buffer><silent> <Plug>(fern-action-new-path=) :<C-u>call <SID>call_without_guard('new_path')<CR>
nnoremap <buffer><silent> <Plug>(fern-action-new-file=) :<C-u>call <SID>call_without_guard('new_file')<CR>
nnoremap <buffer><silent> <Plug>(fern-action-new-dir=) :<C-u>call <SID>call_without_guard('new_dir')<CR>
nnoremap <buffer><silent> <Plug>(fern-action-copy) :<C-u>call <SID>call('copy')<CR>
nnoremap <buffer><silent> <Plug>(fern-action-move) :<C-u>call <SID>call('move')<CR>
nnoremap <buffer><silent> <Plug>(fern-action-trash) :<C-u>call <SID>call('trash')<CR>
nnoremap <buffer><silent> <Plug>(fern-action-trash=) :<C-u>call <SID>call_without_guard('trash')<CR>
nnoremap <buffer><silent> <Plug>(fern-action-remove) :<C-u>call <SID>call('remove')<CR>
nnoremap <buffer><silent> <Plug>(fern-action-remove=) :<C-u>call <SID>call_without_guard('remove')<CR>
nnoremap <buffer><silent> <Plug>(fern-action-new-path) :<C-u>call <SID>call('new_path')<CR>
nnoremap <buffer><silent> <Plug>(fern-action-new-file) :<C-u>call <SID>call('new_file')<CR>
nnoremap <buffer><silent> <Plug>(fern-action-new-dir) :<C-u>call <SID>call('new_dir')<CR>
nnoremap <buffer><silent> <Plug>(fern-action-new-path=) :<C-u>call <SID>call_without_guard('new_path')<CR>
nnoremap <buffer><silent> <Plug>(fern-action-new-file=) :<C-u>call <SID>call_without_guard('new_file')<CR>
nnoremap <buffer><silent> <Plug>(fern-action-new-dir=) :<C-u>call <SID>call_without_guard('new_dir')<CR>
nnoremap <buffer><silent> <Plug>(fern-action-copy) :<C-u>call <SID>call('copy')<CR>
nnoremap <buffer><silent> <Plug>(fern-action-move) :<C-u>call <SID>call('move')<CR>
nnoremap <buffer><silent> <Plug>(fern-action-trash) :<C-u>call <SID>call('trash')<CR>
nnoremap <buffer><silent> <Plug>(fern-action-trash=) :<C-u>call <SID>call_without_guard('trash')<CR>
nnoremap <buffer><silent> <Plug>(fern-action-remove) :<C-u>call <SID>call('remove')<CR>
nnoremap <buffer><silent> <Plug>(fern-action-remove=) :<C-u>call <SID>call_without_guard('remove')<CR>
nnoremap <buffer><silent> <Plug>(fern-action-preview:left) :<C-u>call <SID>call('preview', 'vertical topleft')<CR>
nnoremap <buffer><silent> <Plug>(fern-action-preview:right) :<C-u>call <SID>call('preview', 'vertical botright')<CR>
nnoremap <buffer><silent> <Plug>(fern-action-preview:top) :<C-u>call <SID>call('preview', 'topleft')<CR>
nnoremap <buffer><silent> <Plug>(fern-action-preview:bottom) :<C-u>call <SID>call('preview', 'botright')<CR>

" Alias map
nnoremap <buffer><silent> <Plug>(fern-action-preview) <Plug>(fern-action-preview:bottom)

if !a:disable_default_mappings
nmap <buffer><nowait> N <Plug>(fern-action-new-file)
Expand Down Expand Up @@ -205,6 +212,23 @@ function! s:map_remove(helper) abort
\.then({ -> a:helper.sync.echo(printf('%d items are removed', len(ps))) })
endfunction

function! s:map_preview(helper, prefix) abort
let node = a:helper.sync.get_cursor_node()
if node is# v:null
return s:Promise.reject('cursor node is not visible')
endif
if node.status isnot# a:helper.STATUS_NONE
return s:Promise.resolve()
endif

try
execute printf("noautocmd %s pedit %s", a:prefix, fnameescape(node._path))
return s:Promise.resolve()
catch
return s:Promise.reject(v:exception)
endtry
endfunction

function! s:new_file(helper, name) abort
let node = a:helper.sync.get_cursor_node()
let node = node.status isnot# a:helper.STATUS_EXPANDED ? node.__owner : node
Expand Down
19 changes: 17 additions & 2 deletions doc/fern.txt
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -1037,6 +1037,7 @@ GLOBAL *fern-mapping-global*
\ <Plug>(fern-action-open:edit)
\ <Plug>(fern-action-open:edit-or-tabedit)
<

*<Plug>(fern-action-open)*
An alias to "open:edit" action. Users can overwrite this mapping to
change the default behavior of "open" action like:
Expand All @@ -1045,6 +1046,7 @@ GLOBAL *fern-mapping-global*
\ <Plug>(fern-action-open)
\ <Plug>(fern-action-open:select)
<

*<Plug>(fern-action-diff:select)*
*<Plug>(fern-action-diff:select:vert)*
Open a first marked node through "window selector"
Expand Down Expand Up @@ -1252,7 +1254,7 @@ The following mappings/actions are only available on file:// scheme.
nmap <buffer>
\ <Plug>(my-trash)
\ <Plug>(fern-action-trash=)y<CR>

<
*<Plug>(fern-action-remove)*
*<Plug>(fern-action-remove=)*
Open a prompt to ask if fern can DELETE the cursor node or marked
Expand All @@ -1265,7 +1267,7 @@ The following mappings/actions are only available on file:// scheme.
nmap <buffer>
\ <Plug>(my-trash)
\ <Plug>(fern-action-trash=)y<CR>

<
*<Plug>(fern-action-cd:root)*
*<Plug>(fern-action-lcd:root)*
*<Plug>(fern-action-tcd:root)*
Expand Down Expand Up @@ -1372,6 +1374,19 @@ The following mappings/actions are only available on file:// scheme.
Yank the node path. In FILE scheme, |<Plug>(fern-action-yank)| is
aliased to this mapping.

*<Plug>(fern-action-preview:left)*
*<Plug>(fern-action-preview:right)*
*<Plug>(fern-action-preview:top)*
*<Plug>(fern-action-preview:bottom)*
*<Plug>(fern-action-preview)*
Show the cursor node in a |preview-window| in similar manners of global
"open" actions.
If you would like to jump to the preview window, you can register a
mapping like:
>
nnoremap P <Plug>(fern-action-preview)<C-w>p
<

-----------------------------------------------------------------------------
DICT *fern-mapping-dict*

Expand Down
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