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add another api callback to determine whether menu items should appear

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this way we can e.g. not show the git submenu unless a git repo is
actually present
This commit is contained in:
Martin Grenfell 2009-07-21 19:23:44 +12:00
parent 51637ec6d4
commit f0290b08dd
1 changed files with 55 additions and 17 deletions
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72
plugin/NERD_tree.vim
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@ -429,7 +429,6 @@ endfunction
"CLASS: MenuCallback {{{2
"============================================================
let s:MenuCallback = {}
"FUNCTION: MenuCallback.All() {{{3
function! s:MenuCallback.All()
if !exists("s:menuCallbacks")
@ -438,16 +437,58 @@ function! s:MenuCallback.All()
return s:menuCallbacks
endfunction
"FUNCTION: MenuCallback.Create(text, shortcut, callback) {{{3
function! s:MenuCallback.Create(text, shortcut, callback)
"FUNCTION: MenuCallback.AllEnabledCallbacks() {{{3
function! s:MenuCallback.AllEnabledCallbacks()
let toReturn = []
for i in s:MenuCallback.All()
if i.enabled()
call add(toReturn, i)
endif
endfor
return toReturn
endfunction
"FUNCTION: MenuCallback.FindByShortcut(shortcut) {{{3
function! s:MenuCallback.FindByShortcut(shortcut)
for i in s:MenuCallback.All()
if i.shortcut ==# a:shortcut
return i
endif
endfor
return {}
endfunction
"FUNCTION: MenuCallback.Create(options) {{{3
function! s:MenuCallback.Create(options)
let newCallback = {}
let newCallback = copy(self)
let newCallback.text = a:text
let newCallback.shortcut = a:shortcut
let newCallback.callback = a:callback
let shortcut = a:options['shortcut']
let callback = a:options['callback']
let newCallback.text = a:options['text']
let newCallback.shortcut = a:options['shortcut']
let newCallback.callback = a:options['callback']
if has_key(a:options, 'check_to_enable_callback')
let newCallback.check_to_enable_callback = a:options['check_to_enable_callback']
endif
call add(s:MenuCallback.All(), newCallback)
endfunction
"FUNCTION: MenuCallback.enabled() {{{3
function! s:MenuCallback.enabled()
if has_key(self, "check_to_enable_callback")
return {self.check_to_enable_callback}()
endif
return 1
endfunction
"FUNCTION: MenuCallback.execute() {{{3
function! s:MenuCallback.execute()
call {self.callback}()
endfunction
"FUNCTION: MenuCallback.ShowMenu() {{{3
function! s:MenuCallback.ShowMenu()
let curNode = s:TreeFileNode.GetSelected()
@ -459,23 +500,20 @@ function! s:MenuCallback.ShowMenu()
let prompt = "NERDTree Menu\n" .
\ "==========================================================\n"
for i in s:MenuCallback.All()
for i in s:MenuCallback.AllEnabledCallbacks()
let prompt .= i.text . "\n"
endfor
echo prompt
let choice = nr2char(getchar())
let callback = s:MenuCallback.FindByShortcut(nr2char(getchar()))
if !empty(callback) && callback.enabled()
redraw
call callback.execute()
endif
for i in s:MenuCallback.All()
if choice ==# i.shortcut
exec "call " . i.callback . "()"
return
endif
endfor
endfunction
"CLASS: TreeFileNode {{{2
"This class is the parent of the TreeDirNode class and constitures the
"'Component' part of the composite design pattern between the treenode
@ -2388,8 +2426,8 @@ function! NERDTreeGetCurrentPath()
endif
endfunction
function! NERDTreeAddMenuItem(text, shortcut, callback)
call s:MenuCallback.Create(a:text, a:shortcut, a:callback)
function! NERDTreeAddMenuItem(options)
call s:MenuCallback.Create(a:options)
endfunction
function! NERDTreeRender()