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rework the keymap API

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Add "scope" to it. This allows the user to specify that keymaps should
 apply to files/directories/bookmarks or everything. This will reduce
the amount of 'if empty(node)' checks that are done
This commit is contained in:
Martin Grenfell 2011-12-29 00:17:14 +00:00
parent 205367ab3f
commit b5fd460560
1 changed files with 101 additions and 5 deletions
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106
plugin/NERD_tree.vim
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@ -485,10 +485,21 @@ let s:KeyMap = {}
function! s:KeyMap.All()
if !exists("s:keyMaps")
let s:keyMaps = []
let g:keyMaps = s:keyMaps
endif
return s:keyMaps
endfunction
"FUNCTION: KeyMap.FindFor(key, scope) {{{3
function! s:KeyMap.FindFor(key, scope)
for i in s:KeyMap.All()
if i.key == a:key && i.scope == a:scope
return i
endif
endfor
return {}
endfunction
"FUNCTION: KeyMap.BindAll() {{{3
function! s:KeyMap.BindAll()
for i in s:KeyMap.All()
@ -498,17 +509,102 @@ endfunction
"FUNCTION: KeyMap.bind() {{{3
function! s:KeyMap.bind()
exec "nnoremap <silent> <buffer> ". self.key ." :call ". self.callback ."()<cr>"
exec "nnoremap <buffer> <silent> ". self.key ." :call <SID>KeyMap_Invoke('". self.key ."')<cr>"
endfunction
"FUNCTION: KeyMap.bind() {{{3
"Call the KeyMaps callback function
function! s:KeyMap.invoke(...)
if a:0
call function(self.callback)(a:1)
else
call function(self.callback)()
endif
endfunction
"FUNCTION: KeyMap.Invoke() {{{3
"Find a keymapping for a:key and the current scope invoke it.
"
"Scope is determined as follows:
" * if the cursor is on a dir node then "DirNode"
" * if the cursor is on a file node then "FileNode"
" * if the cursor is on a bookmark then "Bookmark"
"
"If a keymap has the scope of "all" then it will be called if no other keymap
"is found for a:key and the scope.
function! s:KeyMap.Invoke(key)
let node = s:TreeFileNode.GetSelected()
if !empty(node)
"try file node
if !node.path.isDirectory
let km = s:KeyMap.FindFor(a:key, "FileNode")
if !empty(km)
return km.invoke(node)
endif
endif
"try dir node
if node.path.isDirectory
let km = s:KeyMap.FindFor(a:key, "DirNode")
if !empty(km)
return km.invoke(node)
endif
endif
"try generic node
let km = s:KeyMap.FindFor(a:key, "Node")
if !empty(km)
return km.invoke(node)
endif
endif
"try bookmark
let bm = s:Bookmark.GetSelected()
if !empty(bm)
let km = s:KeyMap.FindFor(a:key, "Bookmark")
if !empty(km)
return km.invoke(bm)
endif
endif
"try all
let km = s:KeyMap.FindFor(a:key, "all")
if !empty(km)
return km.invoke()
endif
endfunction
"this is needed since I cant figure out how to invoke dict functions from a
"key map
function! s:KeyMap_Invoke(key)
call s:KeyMap.Invoke(a:key)
endfunction
"FUNCTION: KeyMap.Create(options) {{{3
function! s:KeyMap.Create(options)
let newKeyMap = copy(self)
let newKeyMap.key = a:options['key']
let newKeyMap.quickhelpText = a:options['quickhelpText']
let newKeyMap.callback = a:options['callback']
call add(s:KeyMap.All(), newKeyMap)
let opts = extend({'scope': 'all', 'quickhelpText': ''}, copy(a:options))
let newKeyMap.key = opts['key']
let newKeyMap.quickhelpText = opts['quickhelpText']
let newKeyMap.callback = opts['callback']
let newKeyMap.scope = opts['scope']
call s:KeyMap.Add(newKeyMap)
endfunction
"FUNCTION: KeyMap.Add(keymap) {{{3
function! s:KeyMap.Add(keymap)
let oldmap = s:KeyMap.FindFor(a:keymap.key, a:keymap.scope)
if !empty(oldmap)
call remove(s:KeyMap.All(), index(s:KeyMap.All(), oldmap))
endif
call add(s:KeyMap.All(), a:keymap)
endfunction
"CLASS: MenuController {{{2
"============================================================
let s:MenuController = {}