extension/packages/vim.coffee

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