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