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     @markers  = undefined
  22     @cb       = undefined
  23     @findStr  = ""
  24
  25   enterFindMode: ->
  26     @mode = MODE_FIND
  27
  28   enterHintsMode: (@markers, @cb) ->
  29     @mode = MODE_HINTS
  30
  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()
  41         result = hintChars.search(regexpEscape(keyStr)) > -1
  42       else if @mode == MODE_FIND
  43         result = true
  44
  45     if result then @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       else if @mode == MODE_FIND
  62         findCharHandler @, lastKeyStr, keyboardEvent.charCode
  63         result = true
  64
  65     return result
  66
  67 findCommand = (keys) ->
  68   for i in [0...keys.length]
  69     seq = keys.slice(i).join(',')
  70     if com = commands[seq]
  71       if not isCommandDisabled(seq)
  72         return com
  73
  74   return undefined
  75
  76 maybeCommand = (keys) ->
  77   for i in [0...keys.length]
  78     sequence = keys.slice(i).join(',')
  79     for seq, com of commands
  80       if seq.indexOf(sequence) == 0
  81         return not isCommandDisabled(seq)
  82
  83   return false
  84
  85 exports.Vim = Vim