extension/packages/vim.coffee

   1 utils = require 'utils'
   2
   3 { commands
   4 , hintCharHandler
   5 } = require 'commands'
   6
   7 { getPref
   8 , getDefaultPref
   9 , isCommandDisabled
  10 } = require 'prefs'
  11
  12
  13 MODE_NORMAL = 1
  14 MODE_HINTS  = 2
  15
  16 class Vim
  17   constructor: (@window) ->
  18     @mode     = MODE_NORMAL
  19     @keys     = []
  20     @lastKeyStr = null
  21     @markers  = undefined
  22     @cb       = undefined
  23     @findStr  = ""
  24     @findRng  = null
  25
  26   enterHintsMode: (@markers, @cb) ->
  27     @mode = MODE_HINTS
  28
  29   # TODO: This function should probably remove
  30   # hint markers (if they are present) as well
  31   enterNormalMode: ->
  32     @mode = MODE_NORMAL
  33     @markers = @cb = undefined
  34
  35   handleKeyDown: (keyboardEvent, keyStr) ->
  36     if @mode == MODE_NORMAL || keyStr == 'Esc'
  37       result = maybeCommand @keys.concat([keyStr])
  38     else if !keyboardEvent.ctrlKey and !keyboardEvent.metaKey
  39       if @mode == MODE_HINTS
  40         hintChars = getPref('hint_chars').toLowerCase() or getDefaultPref('hint_chars')
  41         result = hintChars.search(regexpEscape(keyStr)) > -1
  42
  43     if result
  44       @lastKeyStr = keyStr
  45       @keys.push keyStr
  46
  47     return result
  48
  49   handleKeyPress: (keyboardEvent) ->
  50     lastKeyStr = if @keys.length > 0 then @keys[@keys.length - 1] else undefined
  51     if @mode == MODE_NORMAL or lastKeyStr == 'Esc'
  52       if command = findCommand @keys
  53         command @
  54         @keys.length = 0
  55         result = true
  56     else if !keyboardEvent.ctrlKey and !keyboardEvent.metaKey
  57       @keys.length = 0
  58       if @mode == MODE_HINTS
  59         hintCharHandler @, lastKeyStr, keyboardEvent.charCode
  60         result = true
  61
  62     return result
  63
  64 findCommand = (keys) ->
  65   for i in [0...keys.length]
  66     seq = keys.slice(i).join(',')
  67     if com = commands[seq]
  68       if not isCommandDisabled(seq)
  69         return com
  70
  71   return undefined
  72
  73 maybeCommand = (keys) ->
  74   for i in [0...keys.length]
  75     sequence = keys.slice(i).join(',')
  76     for seq, com of commands
  77       if seq.indexOf(sequence) == 0
  78         return not isCommandDisabled(seq)
  79
  80   return false
  81
  82 exports.Vim = Vim