Add current configurations from old repository

8 files changed, 857 insertions, 0 deletions

diff --git a/vim/bundle/vim-addon-mw-utils/autoload/buf_utils.vim b/vim/bundle/vim-addon-mw-utils/autoload/buf_utils.vim
new file mode 100644
index 0000000..d14d404
--- /dev/null
+++ b/vim/bundle/vim-addon-mw-utils/autoload/buf_utils.vim
@@ -0,0 +1,24 @@
+" buf_identifier is either a buf_nr or a filename
+" If any window shows the buffer move to the buffer
+" If not show it in current window (by c-w s c^ you can always
+" reshow the last buffer
+"
+" Example: buf_utils#GotoBuf("/tmp/tfile.txt", {'create': 1})
+" returns: The command which was used to switch to the buffer
+fun! buf_utils#GotoBuf(buf_identifier, opts)
+  let buf_nr = bufnr(a:buf_identifier)
+  if buf_nr == -1 && ( get(a:opts, 'create', 0) || has_key(a:opts, 'create_cmd'))
+    exec get(a:opts,'create_cmd','e').' '.fnameescape(a:buf_identifier)
+    return "e"
+  else
+    let win_nr = bufwinnr(buf_nr)
+    if win_nr == -1
+      exec 'b '.buf_nr
+      return "b"
+    else
+      exec win_nr.'wincmd w'
+      return "w"
+    endif
+    wincmd w"
+  endif
+endf
diff --git a/vim/bundle/vim-addon-mw-utils/autoload/cached_file_contents.vim b/vim/bundle/vim-addon-mw-utils/autoload/cached_file_contents.vim
new file mode 100644
index 0000000..3fc3ce4
--- /dev/null
+++ b/vim/bundle/vim-addon-mw-utils/autoload/cached_file_contents.vim
@@ -0,0 +1,104 @@
+" cached_file_contents.vim
+" @License:     GPL (see http://www.gnu.org/licenses/gpl.txt)
+" @Last Change: 2010-01-03.
+" @Revision:    0.3.0
+
+"exec vam#DefineAndBind('s:c','g:cache_dir_options','{}')
+if !exists('g:cache_dir_options') | let g:cache_dir_options = {} | endif | let s:c = g:cache_dir_options 
+
+let s:c['cache_dir'] = get(s:c, 'cache_dir', expand('$HOME').'/.vim-cache')
+let s:c['scanned_files'] = get(s:c, 'scanned_files', {})
+let s:scanned_files = s:c['scanned_files']
+
+
+let s:define_cache_file = "let this_dir = s:c['cache_dir'].'/cached-file-contents' | let cache_file = expand(this_dir.'/'.substitute(string([func_as_string, a:file]),'[[\\]{}:/\\,''\"# ]\\+','_','g'))"
+
+" read a file, run function to extract contents and cache the result returned
+" by that function in memory. Optionally the result can be cached on disk as
+" because VimL can be slow!
+"
+" file     : the file to be read
+" func: { 'func': function which will be called by funcref#Call
+"       , 'version' : if this version changes cache will be invalidate automatically
+"       , 'ftime_check': optional, default 1. if set to 0 cache isn't updated when file changes and file is in cache
+"       }
+"
+" default: what to return if file doesn't exist
+" think twice about adding lines. This function is called many times.
+function! cached_file_contents#CachedFileContents(file, func, ...) abort
+  let ignore_ftime = a:0 > 0 ? a:1 : 0
+  " using string for default so that is evaluated when needed only
+  let use_file_cache = get(a:func, 'use_file_cache', 0)
+
+  " simple kind of normalization. necessary when using file caching
+  " this seems to be slower:
+  " let file = fnamemodify(a:file, ':p') " simple kind of normalization. necessary when using file caching
+  " / = assume its an absolute path
+  " let file = a:file[0] == '/' ? a:file : expand(a:file, ':p')
+  let file = a:file[0] == '/' ? a:file : fnamemodify(a:file, ':p') " simple kind of normalization. necessary when using file caching
+  let func_as_string = string(a:func['func'])
+
+  if (!has_key(s:scanned_files, func_as_string))
+    let s:scanned_files[func_as_string] = {}
+  endif
+  let dict = s:scanned_files[func_as_string]
+  if use_file_cache && !has_key(dict, a:file)
+    exec s:define_cache_file
+    if filereadable(cache_file)
+      let dict[file] = eval(readfile(cache_file,'b')[0])
+    endif
+  endif
+  if has_key(dict, a:file)
+    let d = dict[a:file]
+    if use_file_cache
+          \ && (ignore_ftime || getftime(a:file) <= d['ftime'])
+          \ && d['version'] == a:func['version']
+      return dict[a:file]['scan_result']
+    endif
+  endif
+  let scan_result = funcref#Call(a:func['func'], [a:file] )
+  let  dict[a:file] = {"ftime": getftime(a:file), 'version': a:func['version'], "scan_result": scan_result }
+  if use_file_cache
+    if !exists('cache_file') | exec s:define_cache_file | endif
+    if !isdirectory(this_dir) | call mkdir(this_dir,'p',0700) | endif
+    call writefile([string(dict[a:file])], cache_file)
+  endif
+  return scan_result
+endfunction
+
+fun! cached_file_contents#ClearScanCache()
+  let s:c['scanned_files'] = {}
+
+  " Don't run rm -fr. Ask user to run it. It cache_dir may have been set to
+  " $HOME ! (should nevere be the case but who knows
+  echoe "run manually in your shell:  rm -fr ".shellescape(s:c['cache_dir'])."/*"
+endf
+
+fun! cached_file_contents#Test()
+
+  " usually you use a global option so that the function can be reused
+  let my_interpreting_func  = {'func' : funcref#Function('return len(readfile(ARGS[0]))'), 'version': 2, 'use_file_cache':1}
+  let my_interpreting_func2 = {'func' : funcref#Function('return ARGS[0]')               , 'version': 2, 'use_file_cache':1}
+
+  let tmp = tempname()
+  call writefile(['some text','2nd line'], tmp)
+
+  let r = [ cached_file_contents#CachedFileContents(tmp, my_interpreting_func)
+        \ , cached_file_contents#CachedFileContents(tmp, my_interpreting_func2) ]
+   if r != [2, tmp]
+    throw "test failed 1, got ".string(r)
+  endif
+  unlet r
+
+  sleep 3
+
+  " now let's change contents
+  call writefile(['some text','2nd line','3rd line'], tmp)
+
+  let r = cached_file_contents#CachedFileContents(tmp, my_interpreting_func)
+  if 3 != r
+    throw "test failed 2, got ".string(r)
+  endif
+
+  echo "test passed"
+endf
diff --git a/vim/bundle/vim-addon-mw-utils/autoload/env_reload.vim b/vim/bundle/vim-addon-mw-utils/autoload/env_reload.vim
new file mode 100644
index 0000000..d8af33a
--- /dev/null
+++ b/vim/bundle/vim-addon-mw-utils/autoload/env_reload.vim
@@ -0,0 +1,12 @@
+" in sh/bash you can type export to get a list of environment variables
+" This function assigns those env vars to Vim.
+" Does not delete env vars yet
+" Example: env_reload#ReloadEnv(system("sh -c 'export'")
+fun! env_reload#ReloadEnv(bash_export_command_output)
+  for i in split(a:bash_export_command_output,"\n")
+    let m = matchlist(i, 'export \([^=]\+\)="\(.*\)"')
+    if empty(m) | continue | endif
+    " don't care about quoted values right now.
+    exec 'let $'.m[1].'='.string(m[2])
+  endfor
+endf
diff --git a/vim/bundle/vim-addon-mw-utils/autoload/funcref.vim b/vim/bundle/vim-addon-mw-utils/autoload/funcref.vim
new file mode 100644
index 0000000..20eec54
--- /dev/null
+++ b/vim/bundle/vim-addon-mw-utils/autoload/funcref.vim
@@ -0,0 +1,95 @@
+" funcref.vim
+" @License:     GPL (see http://www.gnu.org/licenses/gpl.txt)
+" @Last Change: 2010-01-03.
+" @Revision:    0.1.0
+
+" documentation see doc/funcref.txt
+
+" usage:
+"  funcref#Function("filename#Function")
+"  optionally pass arguments:
+"  funcref#Function("filename#Function",{'args': [2]})
+"  optionally define self:
+"  funcref#Function("filename#Function",{'self': object})
+function! funcref#Function(name,...)
+  let d = a:0 > 0 ? a:1 : {}
+  let d['faked_function_reference'] = a:name
+  return d
+endfunction
+
+" args : same as used for call(f,[args], self)
+" f must be either
+"   - a string which can be evaled (use "return 'value'" to return a value)
+"   - a Vim function reference created by function('..')
+"   - a faked function reference created by funcref#Function(..)
+"
+" the last "self" argument can be overriden by the function reference
+" You can pass arguments in a closure like style
+function! funcref#Call(...)
+  let args = copy(a:000)
+
+  " add parameters:
+  if (len(args) < 2)
+    call add(args, [])
+  endif
+
+
+  let isDict = type(args[0]) == type({})
+
+  " prepend parameters which were passed by faked function reference:
+  if isDict &&  has_key(args[0], 'args')
+    let args[1] = args[0]['args']+args[1]
+  endif
+
+  " always pass self. this way you can call functions from dictionaries not
+  " refering to self
+  if (len(args) < 3)
+    call add(args, {})
+  endif
+
+  " the funcref overrides self:
+  if isDict && has_key(args[0], 'self')
+    let args[2] = args[0]['self']
+  endif
+
+  if type(a:1) == 2
+    " funcref: function must have been laoded
+    return call(function('call'), args)
+  elseif isDict && has_key(args[0], 'faked_function_reference')
+    let Fun = args[0]['faked_function_reference']
+    if type(Fun) == type('')
+        \ && (Fun[:len('return ')-1] == 'return ' 
+              \ || Fun[:len('call ')-1] == 'call '
+              \ || Fun[:len('if ')-1] == 'if '
+              \ || Fun[:len('let ')-1] == 'let '
+              \ || Fun[:len('echo ')-1] == 'echo '
+              \ || Fun[:len('exec ')-1] == 'exec '
+              \ || Fun[:len('debug ')-1] == 'debug ')
+      " it doesn't make sense to list all vim commands here
+      " So if you want to execute another action consider using 
+      " funcref#Function('exec  '.string('aw')) or such
+
+      " function is a String, call exec
+      let ARGS = args[1]
+      let SELF = args[2]
+      exec Fun
+    else 
+      " pseudo function, let's load it..
+      if type(Fun) == 1
+        if !exists('*'.Fun)
+          " lazily load function
+          let file = substitute(substitute(Fun,'#[^#]*$','',''),'#','/','g')
+          exec 'runtime /autoload/'.file.'.vim'
+        endif
+        let Fun2 = function(Fun)
+      else
+        let Fun2 = Fun
+      endif
+      let args[0] = Fun
+      return call(function('call'), args)
+    endif
+  else
+    " no function, return the value
+    return args[0]
+  endif
+endfunction
diff --git a/vim/bundle/vim-addon-mw-utils/autoload/glob.vim b/vim/bundle/vim-addon-mw-utils/autoload/glob.vim
new file mode 100644
index 0000000..9a0f79a
--- /dev/null
+++ b/vim/bundle/vim-addon-mw-utils/autoload/glob.vim
@@ -0,0 +1,27 @@
+exec vam#DefineAndBind('s:c','g:glob_like', '{}')
+
+" ignore vcs stuff, Don't think you want those..
+let s:c['regex_ignore_directory'] = '\<\%([_.]darcs\|\.git\|.svn\|.hg\|.cvs\|.bzr\)\>'
+let s:c['glob_cache'] = get(s:c, 'glob_cache', {})
+let s:glob_cache = s:c['glob_cache']
+
+fun! glob#Glob(pattern, ...)
+  let pattern = a:pattern
+  if pattern[0] == '~'
+    let pattern = $HOME.pattern[1:]
+  endif
+  let opts = a:0 > 0 ? a:1 : {}
+  " never cache current directory. You're very likely to edit files in it.
+
+  let c = getcwd()
+  let cachable = get(opts, 'cachable', 0) && pattern[:len(c)-1] != c
+  if cachable && has_key(s:glob_cache, pattern)
+    return s:glob_cache[pattern]
+  endif
+
+  " FIXME: don't recurse into \.git directory (thus reimplement glob in vimL!)
+  let r = filter(split(glob(pattern),"\n"),'v:val !~ '.string(s:c['regex_ignore_directory']))
+  if cachable | let s:glob_cache[pattern]  = r | endif
+  return r
+endf
+
diff --git a/vim/bundle/vim-addon-mw-utils/autoload/tiny_cmd.vim b/vim/bundle/vim-addon-mw-utils/autoload/tiny_cmd.vim
new file mode 100644
index 0000000..052bbe0
--- /dev/null
+++ b/vim/bundle/vim-addon-mw-utils/autoload/tiny_cmd.vim
@@ -0,0 +1,19 @@
+" vim suffers:
+
+exec vam#DefineAndBind('s:c','g:vim_tiny_cmd', '{}')
+
+fun! tiny_cmd#Put(a)
+  let new = get(s:c,'next',0) +1
+  let s:c['next'] = new
+  let s:c[new] = a:a
+  return new
+endf
+
+fun! tiny_cmd#Get(nr)
+  return s:c[a:nr]
+endf
+
+" Get and remove item
+fun! tiny_cmd#Pop(nr)
+  let r = s:c[a:nr] | unlet s:c[a:nr] | return r
+endf
diff --git a/vim/bundle/vim-addon-mw-utils/autoload/tovl/scratch_buffer.vim b/vim/bundle/vim-addon-mw-utils/autoload/tovl/scratch_buffer.vim
new file mode 100644
index 0000000..217dca1
--- /dev/null
+++ b/vim/bundle/vim-addon-mw-utils/autoload/tovl/scratch_buffer.vim
@@ -0,0 +1,103 @@
+" old code
+
+augroup TOVLWrite
+augroup end
+
+" =========== scratch buffer =========================================
+" a scratch buffer is a temporary buffer where the user can enter some text
+" It can be used to get commit messages, edit configuration options and so on
+
+function! tovl#scratch_buffer#KeepIntactLineNr()
+  let i = 0
+  while getline(i)!= b:keepIntact && i < line('$')
+    let i = i+1
+  endwhile
+  if i > line('$')
+    return -1
+  else
+    return i
+  endif
+endfunction
+
+" opens a buffer and runs an action when the buffer is written
+" keys: 
+"  name :   the name of the buffer
+"  onWrite : will be called on write
+"            onWrite is responsible for setlocal nomodified to indicate that
+"            saving has been successful
+"  help  : callback returning additional information lines
+"  getContent : callback returning lines
+"  cmds    : extra commands to be run (optional)
+"            (maybe you prefer adding them the default way afer the
+"            ScratchBuffer call. They'll be rerun on GetContents
+"  sp_cmd  : the command to use to create the new buffer. Defaults to :e
+"  buftype : ...
+"  modifiable : 1 / 0 defaults to 1
+function! tovl#scratch_buffer#ScratchBuffer(opts)
+  let a:opts['name'] = get(a:opts,'name', 'strach_buffer_without_name')
+  exec get(a:opts, 'sp_cmd', 'e').' '.escape(a:opts['name'],' ')
+  let b:settings = a:opts
+  let b:settings['modifiable'] = get(a:opts,'modifiable', 1)
+  setlocal buftype=acwrite
+  command! -buffer -nargs=0 Help call tovl#scratch_buffer#Help()
+
+  " setup write notification
+  au TOVLWrite BufWriteCmd <buffer> call tovl#scratch_buffer#Write()
+
+  if has_key(a:opts,'getContent')
+    command! -buffer -nargs=0 GetContents call tovl#scratch_buffer#GetContents()
+    GetContents
+    if !b:settings['modifiable']
+      setlocal nomodifiable
+    endif
+  endif
+  "let u=&undolevels
+  "setlocal undolevels=-1
+  "exec 'setlocal undolevels='.u
+
+  " mark buffer as not modified
+  setlocal nomodified
+
+  au BufReadCmd <buffer> GetContents
+
+  " run addittional commands
+  for cmd in get(a:opts,'cmds',[])
+    exec cmd
+  endfor
+  silent echo get(a:opts,'echo_help', "type :Help for help")
+endfunction
+
+" =========== utility functions ======================================
+
+function! tovl#scratch_buffer#Write()
+  if has_key(b:settings, 'onWrite')
+    call funcref#Call(b:settings['onWrite'])
+  else
+    echo "don't know how to write. Option hasn't been passed"
+  endif
+endfunction
+
+function! tovl#scratch_buffer#GetContents()
+  setlocal modifiable
+  " empty buffer
+  %g!//d
+  call append(0, funcref#Call(b:settings['getContent']))
+  if !b:settings['modifiable']
+    setlocal nomodifiable
+  endif
+  for cmd in get(b:settings,'cmds',[])
+    exec cmd
+  endfor
+endfunction
+
+function! tovl#scratch_buffer#Help()
+  let help = ["use :e! to reload contents, ZZ or :w(q) to write and quit"
+          \ ,""
+          \ ,"Help for this scratch buffer:"
+          \ ,"=======================================================","",""]
+    \ + funcref#Call(get(b:settings, 'help', []))
+  call tovl#scratch_buffer#ScratchBuffer({
+        \ 'name' : "return Help of ".b:settings['name'],
+        \ 'getContent' : help
+        \ })
+endfunction
diff --git a/vim/bundle/vim-addon-mw-utils/autoload/tovl/ui/filter_list.vim b/vim/bundle/vim-addon-mw-utils/autoload/tovl/ui/filter_list.vim
new file mode 100644
index 0000000..74b2ab4
--- /dev/null
+++ b/vim/bundle/vim-addon-mw-utils/autoload/tovl/ui/filter_list.vim
@@ -0,0 +1,473 @@
+" OLD CODE !
+" I should contribute the multiple filter feature to tlib
+
+" filter list displays a list of items
+" you can white / black filter them by regular expressions (similar to the
+" tlib TToC command
+" However you can edit the filters afterwards and select the cols which should
+" be shown
+
+fun! tovl#ui#filter_list#ListTest()
+  call tovl#ui#filter_list#ListView({
+	\ 'aligned' : 1,
+	\ 'Continuation' : funcref#Function('echo string(ARGS[0])'),
+	\ 'items' : [ {"aa" : "a\nAAAAAAAAAAA", 'bb' : "bbbbbbbbbbbbb\nB" }, 
+		   \  {"aa" : "2a\n2AAAAAAAAAAAA", "bb" : "2 bbbbbbbbbbbbb\n2B"},
+		   \  {"aa" : "XXX", "bb" : "YY"} ],
+	\ })
+
+endfun
+
+fun! s:Intersection(a, b)
+  return filter(copy(a:a), 'index(a:b, v:val) >= 0')
+endf
+
+fun! tovl#ui#filter_list#ListTestGotoLineCurrentBuf()
+  let nr=1
+  let lines = []
+  for l in getline(0,line('$'))
+    call add(lines, {'nr': nr, 'line' :l})
+    let nr = nr +1
+  endfor
+  call tovl#ui#filter_list#ListView({
+	\ 'aligned' : 0,
+	\ 'keys' : ['nr','line'],
+	\ 'number' : 1,
+	\ 'selectByIdOrFilter' : 1,
+	\ 'Continuation' : funcref#Function('exec ARGS[0]["nr"]'),
+	\ 'items' : lines,
+	\ })
+endfun
+
+" opens a new filtered list
+" keys of opts parameters:
+" Continuation: This function will be called with the selected items
+" items: { key : (string or dict) }
+"        items willl be modified. use copy(youritems) as argument to prevent
+"        this. An item is either a string or a dict 
+"        (eg {'file' : .., 'line': ... , 'msg' : .. )
+" keys: list of keys to be shown (optional)
+" filter: list of inital filters which must be applied
+" contains [ { filter: .. , keep : .. }, ] see FilterItems() below
+" aligned: default 0
+" sp_cmd: the command to be used to create the new buffer (default ':e')
+" init : 0 / 1 (default 1): wether to show the view right now
+" number: 0 /1 (default 1): number items ?
+" selectByIdOrFilter: 1: start in getchar() loop so that the user can select
+"                        the item even faster
+"                     auto: only do this if all items fit on screen
+"                     (recommend)
+" cmds: extra cmds to be run
+" cursorAt : at which item to put the cursor?
+"
+" If you don't like the default view you can override UpdateDisplay
+"
+" Usage examples of this list control:
+" - db results
+" - replacement of the quickfix window
+" - select a buffer etc
+fun! tovl#ui#filter_list#ListView(opts)
+  " ActivateAddons theonevimlib
+  let d = {}
+  let d.items = a:opts.items
+  let d.cursorAt = get(a:opts, 'cursorAt', 0)
+  let d.aligned = get(a:opts, 'aligned', 0)
+  let d.sep = '  '
+  let d.filter = get(a:opts, 'filter', [])
+  " using sp because of bd! (FIXME)
+  let d.sp_cmd = get(a:opts, 'sp_cmd', 'sp')
+  let d.allKeys = {}
+  let d.closeOnContinuation = get(a:opts,'closeOnContinuation',1)
+  " don't recommend OnSingleMatch, use OnSingleMatchCR instead
+  let d.continueOnSingleMatch = get(a:opts, 'continueOnSingleMatch',0)
+  let d.continueOnSingleMatchCR = get(a:opts, 'continueOnSingleMatchCR',1)
+  let d.selectByIdOrFilter = get(a:opts, 'selectByIdOrFilter', 0)
+  let d.linesToItems = {}
+  let d.number = get(a:opts, 'number', 1)
+  let d.cmds = get(a:opts, 'cmds', [])
+  let d.syn_cmds = get(a:opts, 'syn_cmds', [])
+
+  if has_key(a:opts,'keys') | let d.keys = a:opts.keys | endif
+  if has_key(a:opts,'Continuation') | let d.Continuation = a:opts.Continuation | endif
+
+  " cache already filtered items in case we want to view really long results
+  " contains [ { filter : { regex: .. , keep : .. } , items : .. , cursorAt :}, 
+  "            { filter : { ... } , items: .. , cursorAt : }
+  let d.cached = []
+  " id of buffer
+  let d.buffer = -1
+  let d.modeText = ''
+
+  fun d.HelpText()
+    return [ "you've entered the the help of the powerful filtered view buffer",
+	   \ "",
+	   \ "type f to start filtering items by regex",
+	   \ "type F to start dropping items by regex",
+	   \ "k / K will ask you for the key to apply the filter to first",
+	   \ "apply the filter by <cr> and press <cr> again to select item",
+	   \ "",
+	   \ "use :ShowAppliedFilters to list active filters",
+	   \ "use :ToggleAlignment to toggle alignment",
+	   \ "",
+	   \ "TODO: Implement sorting, implement interface to change keys (displayed columns)"
+	   \ ]
+  endfun
+
+  " create new scratch buffer
+  " preprocess items calculating line count and maxwidth for all items
+  fun d.NewBufferAndInit()
+    let self.bufferId = bufnr(bufname('%'))
+    for idx in range(0,len(self.items)-1)
+      if type(self.items[idx]) != 4
+	" no dict yet, make it one
+	let self.items[idx] = {'string_line' : self.items[idx]}
+      endif
+      let new = {}
+      for [k,v] in items(self.items[idx])
+	let lines = split(v,"\n")
+	let self.items[idx][k] = { 'text' : v, 'rows' : len(lines), 'cols' : max(map(copy(lines),'len(v:val)')), 'lines' : lines }
+	let self.allKeys[k] = 1
+        unlet k v
+      endfor
+    endfor
+    call tovl#scratch_buffer#ScratchBuffer({
+	  \ 'help' : funcref#Function(self.HelpText,{ 'self' : self }),
+	  \ 'sp_cmd' : self.sp_cmd,
+	  \ 'cmds' : self.cmds
+	  \ })
+    " I assume we have some kind of formatting anyway. Thus breaking lines is bad!
+    set nowrap
+    setlocal cursorline
+    let b:filtered_view = self
+    command! -buffer -nargs=0 ToggleAlignment call b:filtered_view.ToggleAlignment()
+    command! -buffer -nargs=0 ShowAppliedFilters call b:filtered_view.ShowAppliedFilters()
+    command! -buffer -nargs=0 RemoveFilters call b:filtered_view.RemoveFilters()
+    noremap <buffer> f :call b:filtered_view.FilterFromKeyboard(1,'')<cr>
+    " noremap <buffer> f :call b:filtered_view.FilterFromKeyboard(1)<cr>
+    noremap <buffer> F :call b:filtered_view.FilterFromKeyboard(0,'')<cr>
+    if has_key(self,'Continuation')
+      nnoremap <buffer> <cr> :call b:filtered_view.Continue()<cr>
+    endif
+    "noremap <buffer> k
+    "noremap <buffer> K
+
+    let [items, cursorAt] = self.FilteredItems()
+    " len(items) is an approximation because one item can have multiple
+    " lines.. However adding the lines first to check takes too much time
+    if self.selectByIdOrFilter == 1 || (self.selectByIdOrFilter == 'auto' && winheight('%') > len(items) )
+      call self.SelectByIdOrFilter()
+    else
+      " user should choose how to proceed
+      call self.UpdateDisplay()
+    endif
+  endfun
+
+  " user interface
+  fun d.ToggleAlignment()
+    let self.aligned = !self.aligned
+    call self.UpdateDisplay()
+  endfun
+  fun d.ShowAppliedFilters()
+    for i in self.filter | echo string(i) | endfor
+  endfun
+  fun d.RemoveFilters()
+    let self.filter = []
+    call self.UpdateDisplay()
+  endfun
+  fun d.Continue()
+    let item = self.CurrentItem()
+    call self.DoContinue(item)
+  endfun
+  fun d.DoContinue(v)
+    if self.closeOnContinuation | bw! | endif
+    call funcref#Call(self.Continuation,[a:v])
+  endfun
+
+  fun d.MapToOriginal(v)
+    if has_key(a:v, 'string_line')
+      return a:v.string_line.text
+    else
+      let d = {}
+      for [k,v] in items(a:v)
+	let d[k] = v.text
+	unlet k v
+      endfor
+      return d
+    endif
+  endfun
+
+  fun d.CurrentItem()
+    let idx=line('.')-len(self.headerLines)
+    while idx >= 0
+      if has_key(self.linesToItems, idx)
+	return self.MapToOriginal(self.FilteredItems()[0][self.linesToItems[idx]])
+      else
+	let idx = idx -1
+      endif
+    endwhile
+    throw "internal error, couldn't determine selected item!"
+  endfun
+
+  " updates the filter cache and returns the final filtered items
+  fun d.FilteredItems()
+    " update cache
+    let idx = 0
+    let [items, cursorAt] = [self.items, self.cursorAt]
+    for idx in range(0, len(self.filter)-1)
+      if idx +1 > len(self.cached) || self.cached[idx]['filter'] != self.filter[idx]
+	let self.cached = self.cached[:idx-1]
+	let [items, cursorAt] = self.FilterItem(copy(items), self.filter[idx], cursorAt)
+	call add(self.cached, { 'cursorAt' : cursorAt, 'items' : items, 'filter' : self.filter[idx]})
+      else
+        let ci = self.cached[idx]
+	let [items, cursorAt] = [ci['items'], ci['cursorAt']]
+      endif
+    endfor
+    return [items, cursorAt]
+  endfun
+
+  " calling this will return a set of lines which are expected to be the new
+  " buffer contents. The self.linesToItems dict is updated
+  fun d.UpdateDisplay()
+
+    if empty(self.filter)
+      let self.statusline= 'no filter applied, :Help for help'
+    else
+      let self.statusline = len(self.filter).' '.string(self.filter[-1])
+    endif
+
+    let self.linesToItems = {}
+    let [items, cursorAt] = self.FilteredItems()
+    "let num_width = printf('%.0f', trunc(log10(len(items))+1))
+    let num_width = 4
+    if self.aligned
+      " get column width.. (probably will not work with unicde characters.. I
+      " don't have a better solution)
+      let maxlens={}
+      for i in items
+	for [k,v] in items(i)
+	  if get(maxlens,k,0) < v.cols
+	    let maxlens[k] = v.cols
+	  endif
+	endfor
+      endfor
+    endif
+
+    " format lines
+    let self.headerLines = [self.modeText]
+    let lines = copy(self.headerLines)
+    let lines_count = 0
+    if self.number
+      let fmt_startA = '%'.num_width.'s)'
+      let fmt_startB = '%'.num_width.'s'
+    else
+      let fmt_startA = '' | let fmt_startB = ''
+    endif
+    let cursorAtLine = 1 " sane default
+    for idx in range(0,len(items)-1)
+      let self.linesToItems[lines_count + 1] = idx
+      let i = items[idx]
+      let keys = has_key(self,'keys')
+	    \ ? s:Intersection(self.keys, keys(i))
+	    \ : keys(i)
+      let fmt = ''
+      let args =  [i]
+      let cols = []
+      for k in keys
+	let fmt .= self.sep.'%-'.(self.aligned ? maxlens[k] : i[k]['cols']).'s'
+	call add(cols, i[k])
+      endfor
+      for row in range(0, max([1] + map(copy(cols),'v:val["rows"]'))-1)
+	let fmt_args = row == 0 ? [fmt_startA.fmt] :  [fmt_startB.fmt]
+	if self.number
+	  call add(fmt_args, row == 0 ? idx : '')
+	endif
+	for c in cols
+	  call add(fmt_args, c.rows <= row ? '' : c.lines[row])
+	endfor
+	call add(lines, call('printf', fmt_args))
+	let lines_count += 1
+      endfor
+      if idx == cursorAt
+        let cursorAtLine = lines_count
+      endif
+    endfor
+    " update stauts line to show last applied filter
+    " disabled cause it causes trouble on :wincmd w
+    " setlocal statusline=%!b:filtered_view.statusline
+
+    " syntax
+    syn clear
+    for s in self.syn_cmds | exec s | endfor
+    let id = 0
+    " highlight filter regex in buffer as well
+    let syn_ids = [ 'Underlined', 'Todo', 'Error', 'Type', 'Statement' ]
+    for f in self.filter
+      if !f.keep || !has_key(f, 'regex') | continue | endif
+      if f.regex != ''
+        try
+	exec 'syn match '.syn_ids[id % len(syn_ids)].' '.string(f.regex)
+        catch /.*/
+          " ignore errors such as \ without following characters. Thus just
+          " ignore and wait for the next character
+        endtry
+      endif
+      let id = id +1
+    endfor
+    if len(lines) > winheight('%')
+      call extend(lines, self.headerLines)
+    endif
+    normal ggdG
+    call append(0, lines)
+    " place cursor
+    exec (cursorAtLine+1)
+    " move cursor into the middle of the window
+    normal zz
+  endf
+
+  " filter = keys :
+  "  filter = string to be executed containing Val
+  "  keep = 1  keep on match 
+  "       = 0  drop on match
+  "  key (optional)
+  "  cursorAt: at which item to put the cursor
+  "            if that item is deleted it will be placed at the item above
+  " optional: key of dict if dict
+  fun d.FilterItem(items, filter, cursorAt)
+    let filter = 'Val =~ '.string(a:filter.regex)
+    let keep = a:filter.keep
+    let cursorAt = a:cursorAt
+
+    for idx in reverse(range(0, len(a:items)-1))
+      let i = a:items[idx]
+      if has_key(a:filter,'key')
+	let key = a:filter.key
+	if has_key(i, key)
+	  " key given, only filter by this column
+	  let Val = i[key]['text']
+	  exec 'let any = '.filter
+	else
+	  let any = 0
+	endif
+      else
+	let any = 0
+	" no key given, try all
+	for x in values(i)
+	  let Val = x['text']
+	  exec 'let any =  '.filter
+	  if any | break | endif
+	endfor
+      endif
+      if any != keep
+	call remove(a:items, idx)
+        if idx <= cursorAt
+          let cursorAt = cursorAt -1
+        endif
+      endif
+    endfor
+    return [a:items, cursorAt]
+  endfun
+
+  " if the user enters a number select by index else start filtering..
+  fun d.SelectByIdOrFilter()
+    let idx=''
+    let items = self.FilteredItems()[0]
+    try
+      let self.modeText = '[0-9]* : select by index| <esc>: escape getchar() loop, any char: start filtering'
+      call self.UpdateDisplay() | redraw
+      while 1
+	let c=getchar()
+	if index([13,10],c) >= 0
+	  return self.DoContinue(self.MapToOriginal(items[idx]))
+	elseif index([27], c) >=0
+	  " esc, abort
+	  return
+	else
+	  if type(c) == 0
+	    let c = nr2char(c)
+	  endif
+	  if c == "\<bs>" || index(map(range(0,10),'v:val.""'),c) >= 0
+	    if c == "\<bs>"
+	      let idx = idx[:-2]
+	    else
+	      let idx .= c
+	    endif
+	    if idx < len(items) && idx.'0' > len(items) || idx == 0 && len(items) < 10
+	      " only match
+	      return self.DoContinue(self.MapToOriginal(items[idx]))
+	    endif
+	  else
+	    return self.FilterFromKeyboard(1,c)
+	  endif
+	endif
+      endwhile
+    finally
+      let self.modeText = ''
+    endtry
+  endfun
+
+  " gets a regular expresion filter by keybaord and updates the display while
+  " you're typing. The regex ist shown in the statusline
+  fun d.FilterFromKeyboard(keep, start, ...)
+    let self.modeText = 'press ESC to exit getchar() loop'
+    call self.UpdateDisplay() | redraw
+
+    try
+      let key_text = a:0 > 0 ? 'key : '.a:1 : ''
+      let filter_bak = self.filter
+      let filter = copy(self.filter)
+      let start = a:start
+      let filter_new = ''
+      while 1
+	if start != ''
+	  " use c= last char to force updating display etc
+	  let filter_new = start[:-2]
+	  let c = start[-1:]
+	  let start = ''
+	else
+	  let c=getchar()
+	endif 
+	if index([13,10],c) >= 0
+	  " c-j or return, accept new filter
+	  let items = self.FilteredItems()
+	  if len(items) == 1 && has_key(self, 'Continuation') && self.continueOnSingleMatchCR
+	    call self.DoContinue(self.MapToOriginal(items[0]))
+	  endif
+	  return
+	elseif index([27], c) >=0
+	  " esc, abort
+	  let self.filter = filter_bak
+	  call self.UpdateDisplay()
+	  return
+	else
+	  if type(c) == 0
+	    let c = nr2char(c)
+	  endif
+	  if c == "\<bs>"
+	    let filter_new = filter_new[:-2]
+	  else
+	    let filter_new .= c
+	  endif
+	  let d = {'keep' : a:keep, 'regex' : filter_new }
+	  if a:0 > 0
+	    let d['key'] = a:1
+	  endif
+	  let self.filter = copy(filter_bak)
+	  call add(self.filter, d)
+	  let items = self.FilteredItems()
+	  if len(items) == 1 && has_key(self, 'Continuation') && self.continueOnSingleMatch
+	    call self.DoContinue(self.MapToOriginal(items[0]))
+	    return
+	  endif
+	  call self.UpdateDisplay() | redraw
+	endif
+      endwhile
+    finally
+      let self.modeText = ''
+    endtry
+  endfun
+
+  if get(a:opts,'init',1)
+    call d.NewBufferAndInit()
+  endif
+endfun