/
NERD_tree.vim
4391 lines (3885 loc) · 136 KB
/
NERD_tree.vim
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" ============================================================================
" File: NERD_tree.vim
" Description: vim global plugin that provides a nice tree explorer
" Maintainer: Martin Grenfell <martin.grenfell at gmail dot com>
" Last Change: 28 December, 2011
" License: This program is free software. It comes without any warranty,
" to the extent permitted by applicable law. You can redistribute
" it and/or modify it under the terms of the Do What The Fuck You
" Want To Public License, Version 2, as published by Sam Hocevar.
" See http://sam.zoy.org/wtfpl/COPYING for more details.
"
" ============================================================================
let s:NERD_tree_version = '4.2.0'
" SECTION: Script init stuff {{{1
"============================================================
if exists("loaded_nerd_tree")
finish
endif
if v:version < 700
echoerr "NERDTree: this plugin requires vim >= 7. DOWNLOAD IT! You'll thank me later!"
finish
endif
let loaded_nerd_tree = 1
"for line continuation - i.e dont want C in &cpo
let s:old_cpo = &cpo
set cpo&vim
let s:running_windows = has("win16") || has("win32") || has("win64")
"Function: s:initVariable() function {{{2
"This function is used to initialise a given variable to a given value. The
"variable is only initialised if it does not exist prior
"
"Args:
"var: the name of the var to be initialised
"value: the value to initialise var to
"
"Returns:
"1 if the var is set, 0 otherwise
function! s:initVariable(var, value)
if !exists(a:var)
exec 'let ' . a:var . ' = ' . "'" . substitute(a:value, "'", "''", "g") . "'"
return 1
endif
return 0
endfunction
"SECTION: Init variable calls and other random constants {{{2
call s:initVariable("g:NERDChristmasTree", 1)
call s:initVariable("g:NERDTreeAutoCenter", 1)
call s:initVariable("g:NERDTreeAutoCenterThreshold", 3)
call s:initVariable("g:NERDTreeCaseSensitiveSort", 0)
call s:initVariable("g:NERDTreeChDirMode", 0)
call s:initVariable("g:NERDTreeMinimalUI", 0)
if !exists("g:NERDTreeIgnore")
let g:NERDTreeIgnore = ['\~$']
endif
call s:initVariable("g:NERDTreeBookmarksFile", expand('$HOME') . '/.NERDTreeBookmarks')
call s:initVariable("g:NERDTreeHighlightCursorline", 1)
call s:initVariable("g:NERDTreeHijackNetrw", 1)
call s:initVariable("g:NERDTreeMouseMode", 1)
call s:initVariable("g:NERDTreeNotificationThreshold", 100)
call s:initVariable("g:NERDTreeQuitOnOpen", 0)
call s:initVariable("g:NERDTreeShowBookmarks", 0)
call s:initVariable("g:NERDTreeShowFiles", 1)
call s:initVariable("g:NERDTreeShowHidden", 0)
call s:initVariable("g:NERDTreeShowLineNumbers", 0)
call s:initVariable("g:NERDTreeSortDirs", 1)
call s:initVariable("g:NERDTreeDirArrows", !s:running_windows)
call s:initVariable("g:NERDTreeCasadeOpenSingleChildDir", 1)
if !exists("g:NERDTreeSortOrder")
let g:NERDTreeSortOrder = ['\/$', '*', '\.swp$', '\.bak$', '\~$']
else
"if there isnt a * in the sort sequence then add one
if count(g:NERDTreeSortOrder, '*') < 1
call add(g:NERDTreeSortOrder, '*')
endif
endif
"we need to use this number many times for sorting... so we calculate it only
"once here
let s:NERDTreeSortStarIndex = index(g:NERDTreeSortOrder, '*')
if !exists('g:NERDTreeStatusline')
"the exists() crap here is a hack to stop vim spazzing out when
"loading a session that was created with an open nerd tree. It spazzes
"because it doesnt store b:NERDTreeRoot (its a b: var, and its a hash)
let g:NERDTreeStatusline = "%{exists('b:NERDTreeRoot')?b:NERDTreeRoot.path.str():''}"
endif
call s:initVariable("g:NERDTreeWinPos", "left")
call s:initVariable("g:NERDTreeWinSize", 31)
"init the shell commands that will be used to copy nodes, and remove dir trees
"
"Note: the space after the command is important
if s:running_windows
call s:initVariable("g:NERDTreeRemoveDirCmd", 'rmdir /s /q ')
else
call s:initVariable("g:NERDTreeRemoveDirCmd", 'rm -rf ')
call s:initVariable("g:NERDTreeCopyCmd", 'cp -r ')
endif
"SECTION: Init variable calls for key mappings {{{2
call s:initVariable("g:NERDTreeMapActivateNode", "o")
call s:initVariable("g:NERDTreeMapChangeRoot", "C")
call s:initVariable("g:NERDTreeMapChdir", "cd")
call s:initVariable("g:NERDTreeMapCloseChildren", "X")
call s:initVariable("g:NERDTreeMapCloseDir", "x")
call s:initVariable("g:NERDTreeMapDeleteBookmark", "D")
call s:initVariable("g:NERDTreeMapMenu", "m")
call s:initVariable("g:NERDTreeMapHelp", "?")
call s:initVariable("g:NERDTreeMapJumpFirstChild", "K")
call s:initVariable("g:NERDTreeMapJumpLastChild", "J")
call s:initVariable("g:NERDTreeMapJumpNextSibling", "<C-j>")
call s:initVariable("g:NERDTreeMapJumpParent", "p")
call s:initVariable("g:NERDTreeMapJumpPrevSibling", "<C-k>")
call s:initVariable("g:NERDTreeMapJumpRoot", "P")
call s:initVariable("g:NERDTreeMapOpenExpl", "e")
call s:initVariable("g:NERDTreeMapOpenInTab", "t")
call s:initVariable("g:NERDTreeMapOpenInTabSilent", "T")
call s:initVariable("g:NERDTreeMapOpenRecursively", "O")
call s:initVariable("g:NERDTreeMapOpenSplit", "i")
call s:initVariable("g:NERDTreeMapOpenVSplit", "s")
call s:initVariable("g:NERDTreeMapPreview", "g" . NERDTreeMapActivateNode)
call s:initVariable("g:NERDTreeMapPreviewSplit", "g" . NERDTreeMapOpenSplit)
call s:initVariable("g:NERDTreeMapPreviewVSplit", "g" . NERDTreeMapOpenVSplit)
call s:initVariable("g:NERDTreeMapQuit", "q")
call s:initVariable("g:NERDTreeMapRefresh", "r")
call s:initVariable("g:NERDTreeMapRefreshRoot", "R")
call s:initVariable("g:NERDTreeMapToggleBookmarks", "B")
call s:initVariable("g:NERDTreeMapToggleFiles", "F")
call s:initVariable("g:NERDTreeMapToggleFilters", "f")
call s:initVariable("g:NERDTreeMapToggleHidden", "I")
call s:initVariable("g:NERDTreeMapToggleZoom", "A")
call s:initVariable("g:NERDTreeMapUpdir", "u")
call s:initVariable("g:NERDTreeMapUpdirKeepOpen", "U")
"SECTION: Script level variable declaration{{{2
if s:running_windows
let s:escape_chars = " `\|\"#%&,?()\*^<>"
else
let s:escape_chars = " \\`\|\"#%&,?()\*^<>[]"
endif
let s:NERDTreeBufName = 'NERD_tree_'
let s:tree_wid = 2
if g:NERDTreeDirArrows
let s:tree_markup_reg = '^\([▾▸] \| \+[▾▸] \| \+\)'
else
let s:tree_markup_reg = '^[ `|]*[\-+~]'
endif
let s:tree_up_dir_line = '.. (up a dir)'
"the number to add to the nerd tree buffer name to make the buf name unique
let s:next_buffer_number = 1
" SECTION: Commands {{{1
"============================================================
"init the command that users start the nerd tree with
command! -n=? -complete=dir -bar NERDTree :call s:initNerdTree('<args>')
command! -n=? -complete=dir -bar NERDTreeToggle :call s:toggle('<args>')
command! -n=0 -bar NERDTreeClose :call s:closeTreeIfOpen()
command! -n=1 -complete=customlist,s:completeBookmarks -bar NERDTreeFromBookmark call s:initNerdTree('<args>')
command! -n=0 -bar NERDTreeMirror call s:initNerdTreeMirror()
command! -n=0 -bar NERDTreeFind call s:findAndRevealPath()
command! -n=0 -bar NERDTreeFocus call NERDTreeFocus()
" SECTION: Auto commands {{{1
"============================================================
augroup NERDTree
"Save the cursor position whenever we close the nerd tree
exec "autocmd BufWinLeave ". s:NERDTreeBufName ."* call <SID>saveScreenState()"
"disallow insert mode in the NERDTree
exec "autocmd BufEnter ". s:NERDTreeBufName ."* stopinsert"
augroup END
if g:NERDTreeHijackNetrw
augroup NERDTreeHijackNetrw
autocmd VimEnter * silent! autocmd! FileExplorer
au BufEnter,VimEnter * call s:checkForBrowse(expand("<amatch>"))
augroup END
endif
"SECTION: Classes {{{1
"============================================================
"CLASS: Bookmark {{{2
"============================================================
let s:Bookmark = {}
" FUNCTION: Bookmark.activate() {{{3
function! s:Bookmark.activate(...)
call self.open(a:0 ? a:1 : {})
endfunction
" FUNCTION: Bookmark.AddBookmark(name, path) {{{3
" Class method to add a new bookmark to the list, if a previous bookmark exists
" with the same name, just update the path for that bookmark
function! s:Bookmark.AddBookmark(name, path)
for i in s:Bookmark.Bookmarks()
if i.name ==# a:name
let i.path = a:path
return
endif
endfor
call add(s:Bookmark.Bookmarks(), s:Bookmark.New(a:name, a:path))
call s:Bookmark.Sort()
endfunction
" Function: Bookmark.Bookmarks() {{{3
" Class method to get all bookmarks. Lazily initializes the bookmarks global
" variable
function! s:Bookmark.Bookmarks()
if !exists("g:NERDTreeBookmarks")
let g:NERDTreeBookmarks = []
endif
return g:NERDTreeBookmarks
endfunction
" Function: Bookmark.BookmarkExistsFor(name) {{{3
" class method that returns 1 if a bookmark with the given name is found, 0
" otherwise
function! s:Bookmark.BookmarkExistsFor(name)
try
call s:Bookmark.BookmarkFor(a:name)
return 1
catch /^NERDTree.BookmarkNotFoundError/
return 0
endtry
endfunction
" Function: Bookmark.BookmarkFor(name) {{{3
" Class method to get the bookmark that has the given name. {} is return if no
" bookmark is found
function! s:Bookmark.BookmarkFor(name)
for i in s:Bookmark.Bookmarks()
if i.name ==# a:name
return i
endif
endfor
throw "NERDTree.BookmarkNotFoundError: no bookmark found for name: \"". a:name .'"'
endfunction
" Function: Bookmark.BookmarkNames() {{{3
" Class method to return an array of all bookmark names
function! s:Bookmark.BookmarkNames()
let names = []
for i in s:Bookmark.Bookmarks()
call add(names, i.name)
endfor
return names
endfunction
" FUNCTION: Bookmark.CacheBookmarks(silent) {{{3
" Class method to read all bookmarks from the bookmarks file intialize
" bookmark objects for each one.
"
" Args:
" silent - dont echo an error msg if invalid bookmarks are found
function! s:Bookmark.CacheBookmarks(silent)
if filereadable(g:NERDTreeBookmarksFile)
let g:NERDTreeBookmarks = []
let g:NERDTreeInvalidBookmarks = []
let bookmarkStrings = readfile(g:NERDTreeBookmarksFile)
let invalidBookmarksFound = 0
for i in bookmarkStrings
"ignore blank lines
if i != ''
let name = substitute(i, '^\(.\{-}\) .*$', '\1', '')
let path = substitute(i, '^.\{-} \(.*\)$', '\1', '')
try
let bookmark = s:Bookmark.New(name, s:Path.New(path))
call add(g:NERDTreeBookmarks, bookmark)
catch /^NERDTree.InvalidArgumentsError/
call add(g:NERDTreeInvalidBookmarks, i)
let invalidBookmarksFound += 1
endtry
endif
endfor
if invalidBookmarksFound
call s:Bookmark.Write()
if !a:silent
call s:echo(invalidBookmarksFound . " invalid bookmarks were read. See :help NERDTreeInvalidBookmarks for info.")
endif
endif
call s:Bookmark.Sort()
endif
endfunction
" FUNCTION: Bookmark.compareTo(otherbookmark) {{{3
" Compare these two bookmarks for sorting purposes
function! s:Bookmark.compareTo(otherbookmark)
return a:otherbookmark.name < self.name
endfunction
" FUNCTION: Bookmark.ClearAll() {{{3
" Class method to delete all bookmarks.
function! s:Bookmark.ClearAll()
for i in s:Bookmark.Bookmarks()
call i.delete()
endfor
call s:Bookmark.Write()
endfunction
" FUNCTION: Bookmark.delete() {{{3
" Delete this bookmark. If the node for this bookmark is under the current
" root, then recache bookmarks for its Path object
function! s:Bookmark.delete()
let node = {}
try
let node = self.getNode(1)
catch /^NERDTree.BookmarkedNodeNotFoundError/
endtry
call remove(s:Bookmark.Bookmarks(), index(s:Bookmark.Bookmarks(), self))
if !empty(node)
call node.path.cacheDisplayString()
endif
call s:Bookmark.Write()
endfunction
" FUNCTION: Bookmark.getNode(searchFromAbsoluteRoot) {{{3
" Gets the treenode for this bookmark
"
" Args:
" searchFromAbsoluteRoot: specifies whether we should search from the current
" tree root, or the highest cached node
function! s:Bookmark.getNode(searchFromAbsoluteRoot)
let searchRoot = a:searchFromAbsoluteRoot ? s:TreeDirNode.AbsoluteTreeRoot() : b:NERDTreeRoot
let targetNode = searchRoot.findNode(self.path)
if empty(targetNode)
throw "NERDTree.BookmarkedNodeNotFoundError: no node was found for bookmark: " . self.name
endif
return targetNode
endfunction
" FUNCTION: Bookmark.GetNodeForName(name, searchFromAbsoluteRoot) {{{3
" Class method that finds the bookmark with the given name and returns the
" treenode for it.
function! s:Bookmark.GetNodeForName(name, searchFromAbsoluteRoot)
let bookmark = s:Bookmark.BookmarkFor(a:name)
return bookmark.getNode(a:searchFromAbsoluteRoot)
endfunction
" FUNCTION: Bookmark.GetSelected() {{{3
" returns the Bookmark the cursor is over, or {}
function! s:Bookmark.GetSelected()
let line = getline(".")
let name = substitute(line, '^>\(.\{-}\) .\+$', '\1', '')
if name != line
try
return s:Bookmark.BookmarkFor(name)
catch /^NERDTree.BookmarkNotFoundError/
return {}
endtry
endif
return {}
endfunction
" Function: Bookmark.InvalidBookmarks() {{{3
" Class method to get all invalid bookmark strings read from the bookmarks
" file
function! s:Bookmark.InvalidBookmarks()
if !exists("g:NERDTreeInvalidBookmarks")
let g:NERDTreeInvalidBookmarks = []
endif
return g:NERDTreeInvalidBookmarks
endfunction
" FUNCTION: Bookmark.mustExist() {{{3
function! s:Bookmark.mustExist()
if !self.path.exists()
call s:Bookmark.CacheBookmarks(1)
throw "NERDTree.BookmarkPointsToInvalidLocationError: the bookmark \"".
\ self.name ."\" points to a non existing location: \"". self.path.str()
endif
endfunction
" FUNCTION: Bookmark.New(name, path) {{{3
" Create a new bookmark object with the given name and path object
function! s:Bookmark.New(name, path)
if a:name =~# ' '
throw "NERDTree.IllegalBookmarkNameError: illegal name:" . a:name
endif
let newBookmark = copy(self)
let newBookmark.name = a:name
let newBookmark.path = a:path
return newBookmark
endfunction
" FUNCTION: Bookmark.open([options]) {{{3
"Args:
"A dictionary containing the following keys (all optional):
" 'where': Specifies whether the node should be opened in new split/tab or in
" the previous window. Can be either 'v' (vertical split), 'h'
" (horizontal split), 't' (new tab) or 'p' (previous window).
" 'reuse': if a window is displaying the file then jump the cursor there
" 'keepopen': dont close the tree window
" 'stay': open the file, but keep the cursor in the tree win
"
function! s:Bookmark.open(...)
let opts = a:0 ? a:1 : {}
if self.path.isDirectory && !has_key(opts, 'where')
call self.toRoot()
else
let opener = s:Opener.New(self.path, opts)
call opener.open(self)
endif
endfunction
" FUNCTION: Bookmark.openInNewTab(options) {{{3
" Create a new bookmark object with the given name and path object
function! s:Bookmark.openInNewTab(options)
call s:deprecated('Bookmark.openInNewTab', 'is deprecated, use open() instead')
call self.open(a:options)
endfunction
" Function: Bookmark.setPath(path) {{{3
" makes this bookmark point to the given path
function! s:Bookmark.setPath(path)
let self.path = a:path
endfunction
" Function: Bookmark.Sort() {{{3
" Class method that sorts all bookmarks
function! s:Bookmark.Sort()
let CompareFunc = function("s:compareBookmarks")
call sort(s:Bookmark.Bookmarks(), CompareFunc)
endfunction
" Function: Bookmark.str() {{{3
" Get the string that should be rendered in the view for this bookmark
function! s:Bookmark.str()
let pathStrMaxLen = winwidth(s:getTreeWinNum()) - 4 - len(self.name)
if &nu
let pathStrMaxLen = pathStrMaxLen - &numberwidth
endif
let pathStr = self.path.str({'format': 'UI'})
if len(pathStr) > pathStrMaxLen
let pathStr = '<' . strpart(pathStr, len(pathStr) - pathStrMaxLen)
endif
return '>' . self.name . ' ' . pathStr
endfunction
" FUNCTION: Bookmark.toRoot() {{{3
" Make the node for this bookmark the new tree root
function! s:Bookmark.toRoot()
if self.validate()
try
let targetNode = self.getNode(1)
catch /^NERDTree.BookmarkedNodeNotFoundError/
let targetNode = s:TreeFileNode.New(s:Bookmark.BookmarkFor(self.name).path)
endtry
call targetNode.makeRoot()
call s:renderView()
call targetNode.putCursorHere(0, 0)
endif
endfunction
" FUNCTION: Bookmark.ToRoot(name) {{{3
" Make the node for this bookmark the new tree root
function! s:Bookmark.ToRoot(name)
let bookmark = s:Bookmark.BookmarkFor(a:name)
call bookmark.toRoot()
endfunction
"FUNCTION: Bookmark.validate() {{{3
function! s:Bookmark.validate()
if self.path.exists()
return 1
else
call s:Bookmark.CacheBookmarks(1)
call s:renderView()
call s:echo(self.name . "now points to an invalid location. See :help NERDTreeInvalidBookmarks for info.")
return 0
endif
endfunction
" Function: Bookmark.Write() {{{3
" Class method to write all bookmarks to the bookmarks file
function! s:Bookmark.Write()
let bookmarkStrings = []
for i in s:Bookmark.Bookmarks()
call add(bookmarkStrings, i.name . ' ' . i.path.str())
endfor
"add a blank line before the invalid ones
call add(bookmarkStrings, "")
for j in s:Bookmark.InvalidBookmarks()
call add(bookmarkStrings, j)
endfor
call writefile(bookmarkStrings, g:NERDTreeBookmarksFile)
endfunction
"CLASS: KeyMap {{{2
"============================================================
let s:KeyMap = {}
"FUNCTION: KeyMap.All() {{{3
function! s:KeyMap.All()
if !exists("s:keyMaps")
let 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()
call i.bind()
endfor
endfunction
"FUNCTION: KeyMap.bind() {{{3
function! s:KeyMap.bind()
" If the key sequence we're trying to map contains any '<>' notation, we
" must replace each of the '<' characters with '<lt>' to ensure the string
" is not translated into its corresponding keycode during the later part
" of the map command below
" :he <>
let specialNotationRegex = '\m<\([[:alnum:]_-]\+>\)'
if self.key =~# specialNotationRegex
let keymapInvokeString = substitute(self.key, specialNotationRegex, '<lt>\1', 'g')
else
let keymapInvokeString = self.key
endif
let premap = self.key == "<LeftRelease>" ? " <LeftRelease>" : " "
exec 'nnoremap <buffer> <silent> '. self.key . premap . ':call <SID>KeyMap_Invoke("'. keymapInvokeString .'")<cr>'
endfunction
"FUNCTION: KeyMap.Remove(key, scope) {{{3
function! s:KeyMap.Remove(key, scope)
let maps = s:KeyMap.All()
for i in range(len(maps))
if maps[i].key ==# a:key && maps[i].scope ==# a:scope
return remove(maps, i)
endif
endfor
endfunction
"FUNCTION: KeyMap.invoke() {{{3
"Call the KeyMaps callback function
function! s:KeyMap.invoke(...)
let Callback = function(self.callback)
if a:0
call Callback(a:1)
else
call 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 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)
call s:KeyMap.Remove(a:keymap.key, a:keymap.scope)
call add(s:KeyMap.All(), a:keymap)
endfunction
"CLASS: MenuController {{{2
"============================================================
let s:MenuController = {}
"FUNCTION: MenuController.New(menuItems) {{{3
"create a new menu controller that operates on the given menu items
function! s:MenuController.New(menuItems)
let newMenuController = copy(self)
if a:menuItems[0].isSeparator()
let newMenuController.menuItems = a:menuItems[1:-1]
else
let newMenuController.menuItems = a:menuItems
endif
return newMenuController
endfunction
"FUNCTION: MenuController.showMenu() {{{3
"start the main loop of the menu and get the user to choose/execute a menu
"item
function! s:MenuController.showMenu()
call self._saveOptions()
try
let self.selection = 0
let done = 0
while !done
redraw!
call self._echoPrompt()
let key = nr2char(getchar())
let done = self._handleKeypress(key)
endwhile
finally
call self._restoreOptions()
endtry
if self.selection != -1
let m = self._current()
call m.execute()
endif
endfunction
"FUNCTION: MenuController._echoPrompt() {{{3
function! s:MenuController._echoPrompt()
echo "NERDTree Menu. Use j/k/enter and the shortcuts indicated"
echo "=========================================================="
for i in range(0, len(self.menuItems)-1)
if self.selection == i
echo "> " . self.menuItems[i].text
else
echo " " . self.menuItems[i].text
endif
endfor
endfunction
"FUNCTION: MenuController._current(key) {{{3
"get the MenuItem that is currently selected
function! s:MenuController._current()
return self.menuItems[self.selection]
endfunction
"FUNCTION: MenuController._handleKeypress(key) {{{3
"change the selection (if appropriate) and return 1 if the user has made
"their choice, 0 otherwise
function! s:MenuController._handleKeypress(key)
if a:key == 'j'
call self._cursorDown()
elseif a:key == 'k'
call self._cursorUp()
elseif a:key == nr2char(27) "escape
let self.selection = -1
return 1
elseif a:key == "\r" || a:key == "\n" "enter and ctrl-j
return 1
else
let index = self._nextIndexFor(a:key)
if index != -1
let self.selection = index
if len(self._allIndexesFor(a:key)) == 1
return 1
endif
endif
endif
return 0
endfunction
"FUNCTION: MenuController._allIndexesFor(shortcut) {{{3
"get indexes to all menu items with the given shortcut
function! s:MenuController._allIndexesFor(shortcut)
let toReturn = []
for i in range(0, len(self.menuItems)-1)
if self.menuItems[i].shortcut == a:shortcut
call add(toReturn, i)
endif
endfor
return toReturn
endfunction
"FUNCTION: MenuController._nextIndexFor(shortcut) {{{3
"get the index to the next menu item with the given shortcut, starts from the
"current cursor location and wraps around to the top again if need be
function! s:MenuController._nextIndexFor(shortcut)
for i in range(self.selection+1, len(self.menuItems)-1)
if self.menuItems[i].shortcut == a:shortcut
return i
endif
endfor
for i in range(0, self.selection)
if self.menuItems[i].shortcut == a:shortcut
return i
endif
endfor
return -1
endfunction
"FUNCTION: MenuController._setCmdheight() {{{3
"sets &cmdheight to whatever is needed to display the menu
function! s:MenuController._setCmdheight()
let &cmdheight = len(self.menuItems) + 3
endfunction
"FUNCTION: MenuController._saveOptions() {{{3
"set any vim options that are required to make the menu work (saving their old
"values)
function! s:MenuController._saveOptions()
let self._oldLazyredraw = &lazyredraw
let self._oldCmdheight = &cmdheight
set nolazyredraw
call self._setCmdheight()
endfunction
"FUNCTION: MenuController._restoreOptions() {{{3
"restore the options we saved in _saveOptions()
function! s:MenuController._restoreOptions()
let &cmdheight = self._oldCmdheight
let &lazyredraw = self._oldLazyredraw
endfunction
"FUNCTION: MenuController._cursorDown() {{{3
"move the cursor to the next menu item, skipping separators
function! s:MenuController._cursorDown()
let done = 0
while !done
if self.selection < len(self.menuItems)-1
let self.selection += 1
else
let self.selection = 0
endif
if !self._current().isSeparator()
let done = 1
endif
endwhile
endfunction
"FUNCTION: MenuController._cursorUp() {{{3
"move the cursor to the previous menu item, skipping separators
function! s:MenuController._cursorUp()
let done = 0
while !done
if self.selection > 0
let self.selection -= 1
else
let self.selection = len(self.menuItems)-1
endif
if !self._current().isSeparator()
let done = 1
endif
endwhile
endfunction
"CLASS: MenuItem {{{2
"============================================================
let s:MenuItem = {}
"FUNCTION: MenuItem.All() {{{3
"get all top level menu items
function! s:MenuItem.All()
if !exists("s:menuItems")
let s:menuItems = []
endif
return s:menuItems
endfunction
"FUNCTION: MenuItem.AllEnabled() {{{3
"get all top level menu items that are currently enabled
function! s:MenuItem.AllEnabled()
let toReturn = []
for i in s:MenuItem.All()
if i.enabled()
call add(toReturn, i)
endif
endfor
return toReturn
endfunction
"FUNCTION: MenuItem.Create(options) {{{3
"make a new menu item and add it to the global list
function! s:MenuItem.Create(options)
let newMenuItem = copy(self)
let newMenuItem.text = a:options['text']
let newMenuItem.shortcut = a:options['shortcut']
let newMenuItem.children = []
let newMenuItem.isActiveCallback = -1
if has_key(a:options, 'isActiveCallback')
let newMenuItem.isActiveCallback = a:options['isActiveCallback']
endif
let newMenuItem.callback = -1
if has_key(a:options, 'callback')
let newMenuItem.callback = a:options['callback']
endif
if has_key(a:options, 'parent')
call add(a:options['parent'].children, newMenuItem)
else
call add(s:MenuItem.All(), newMenuItem)
endif
return newMenuItem
endfunction
"FUNCTION: MenuItem.CreateSeparator(options) {{{3
"make a new separator menu item and add it to the global list
function! s:MenuItem.CreateSeparator(options)
let standard_options = { 'text': '--------------------',
\ 'shortcut': -1,
\ 'callback': -1 }
let options = extend(a:options, standard_options, "force")
return s:MenuItem.Create(options)
endfunction
"FUNCTION: MenuItem.CreateSubmenu(options) {{{3
"make a new submenu and add it to global list
function! s:MenuItem.CreateSubmenu(options)
let standard_options = { 'callback': -1 }
let options = extend(a:options, standard_options, "force")
return s:MenuItem.Create(options)
endfunction
"FUNCTION: MenuItem.enabled() {{{3
"return 1 if this menu item should be displayed
"
"delegates off to the isActiveCallback, and defaults to 1 if no callback was
"specified
function! s:MenuItem.enabled()
if self.isActiveCallback != -1
return {self.isActiveCallback}()
endif
return 1
endfunction
"FUNCTION: MenuItem.execute() {{{3
"perform the action behind this menu item, if this menuitem has children then
"display a new menu for them, otherwise deletegate off to the menuitem's
"callback
function! s:MenuItem.execute()
if len(self.children)
let mc = s:MenuController.New(self.children)
call mc.showMenu()
else
if self.callback != -1
call {self.callback}()
endif
endif
endfunction
"FUNCTION: MenuItem.isSeparator() {{{3
"return 1 if this menuitem is a separator
function! s:MenuItem.isSeparator()
return self.callback == -1 && self.children == []
endfunction
"FUNCTION: MenuItem.isSubmenu() {{{3
"return 1 if this menuitem is a submenu
function! s:MenuItem.isSubmenu()
return self.callback == -1 && !empty(self.children)
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
"classes.
"============================================================
let s:TreeFileNode = {}
"FUNCTION: TreeFileNode.activate(...) {{{3
function! s:TreeFileNode.activate(...)
call self.open(a:0 ? a:1 : {})
endfunction
"FUNCTION: TreeFileNode.bookmark(name) {{{3
"bookmark this node with a:name
function! s:TreeFileNode.bookmark(name)
"if a bookmark exists with the same name and the node is cached then save
"it so we can update its display string
let oldMarkedNode = {}
try
let oldMarkedNode = s:Bookmark.GetNodeForName(a:name, 1)
catch /^NERDTree.BookmarkNotFoundError/
catch /^NERDTree.BookmarkedNodeNotFoundError/
endtry
call s:Bookmark.AddBookmark(a:name, self.path)
call self.path.cacheDisplayString()
call s:Bookmark.Write()
if !empty(oldMarkedNode)
call oldMarkedNode.path.cacheDisplayString()
endif
endfunction
"FUNCTION: TreeFileNode.cacheParent() {{{3
"initializes self.parent if it isnt already
function! s:TreeFileNode.cacheParent()
if empty(self.parent)
let parentPath = self.path.getParent()
if parentPath.equals(self.path)
throw "NERDTree.CannotCacheParentError: already at root"
endif
let self.parent = s:TreeFileNode.New(parentPath)
endif
endfunction
"FUNCTION: TreeFileNode.compareNodes {{{3
"This is supposed to be a class level method but i cant figure out how to
"get func refs to work from a dict..
"
"A class level method that compares two nodes
"
"Args:
"n1, n2: the 2 nodes to compare
function! s:compareNodes(n1, n2)
return a:n1.path.compareTo(a:n2.path)
endfunction
"FUNCTION: TreeFileNode.clearBookmarks() {{{3
function! s:TreeFileNode.clearBookmarks()
for i in s:Bookmark.Bookmarks()
if i.path.equals(self.path)
call i.delete()
end
endfor
call self.path.cacheDisplayString()
endfunction
"FUNCTION: TreeFileNode.copy(dest) {{{3
function! s:TreeFileNode.copy(dest)
call self.path.copy(a:dest)
let newPath = s:Path.New(a:dest)
let parent = b:NERDTreeRoot.findNode(newPath.getParent())
if !empty(parent)
call parent.refresh()
return parent.findNode(newPath)
else
return {}
endif
endfunction
"FUNCTION: TreeFileNode.delete {{{3
"Removes this node from the tree and calls the Delete method for its path obj
function! s:TreeFileNode.delete()
call self.path.delete()
call self.parent.removeChild(self)
endfunction