extension/packages/vim.coffee

   1 utils = require 'utils'
   2
   3 { commands
   4 , hintCharHandler
   5 , findCharHandler
   6 } = require 'commands'
   7
   8 { getPref
   9 , isCommandDisabled
  10 } = require 'prefs'
  11
  12
  13 MODE_NORMAL = 1
  14 MODE_HINTS  = 2
  15 MODE_FIND   = 3
  16
  17 class Vim
  18   constructor: (@window) ->
  19     @mode     = MODE_NORMAL
  20     @keys     = []
  21     @lastKeyStr = null
  22     @markers  = undefined
  23     @cb       = undefined
  24     @findStr  = ""
  25
  26   enterFindMode: ->
  27     @mode = MODE_FIND
  28
  29   enterHintsMode: (@markers, @cb) ->
  30     @mode = MODE_HINTS
  31
  32   enterNormalMode: ->
  33     @mode = MODE_NORMAL
  34     @markers = @cb = undefined
  35
  36   handleKeyDown: (keyboardEvent, keyStr) ->
  37     if @mode == MODE_NORMAL || keyStr == 'Esc'
  38       result = maybeCommand @keys.concat([keyStr])
  39     else if !keyboardEvent.ctrlKey and !keyboardEvent.metaKey
  40       if @mode == MODE_HINTS
  41         hintChars = getPref('hint_chars').toLowerCase()
  42         result = hintChars.search(regexpEscape(keyStr)) > -1
  43       else if @mode == MODE_FIND
  44         result = true
  45
  46     if result
  47       @lastKeyStr = keyStr
  48       @keys.push keyStr
  49
  50     return result
  51
  52   handleKeyPress: (keyboardEvent) ->
  53     lastKeyStr = if @keys.length > 0 then @keys[@keys.length - 1] else undefined
  54     if @mode == MODE_NORMAL or lastKeyStr == 'Esc'
  55       if command = findCommand @keys
  56         command @
  57         @keys.length = 0
  58         result = true
  59     else if !keyboardEvent.ctrlKey and !keyboardEvent.metaKey
  60       @keys.length = 0
  61       if @mode == MODE_HINTS
  62         hintCharHandler @, lastKeyStr, keyboardEvent.charCode
  63         result = true
  64       else if @mode == MODE_FIND
  65         findCharHandler @, lastKeyStr, keyboardEvent.charCode
  66         result = true
  67
  68     return result
  69
  70 findCommand = (keys) ->
  71   for i in [0...keys.length]
  72     seq = keys.slice(i).join(',')
  73     if com = commands[seq]
  74       if not isCommandDisabled(seq)
  75         return com
  76
  77   return undefined
  78
  79 maybeCommand = (keys) ->
  80   for i in [0...keys.length]
  81     sequence = keys.slice(i).join(',')
  82     for seq, com of commands
  83       if seq.indexOf(sequence) == 0
  84         return not isCommandDisabled(seq)
  85
  86   return false
  87
  88 exports.Vim = Vim