extension/packages/vim.coffee

   1 utils = require 'utils'
   2
   3 { commands
   4 , hintCharHandler
   5 , findCharHandler
   6 } = require 'commands'
   7
   8 { getPref } = require 'prefs'
   9
  10
  11 MODE_NORMAL = 1
  12 MODE_HINTS  = 2
  13 MODE_FIND   = 3
  14
  15 class Vim
  16   constructor: (@window) ->
  17     @mode     = MODE_NORMAL
  18     @keys     = []
  19     @markers  = undefined
  20     @cb       = undefined
  21     @findStr  = ""
  22
  23   enterFindMode: ->
  24     @mode = MODE_FIND
  25
  26   enterHintsMode: (@markers, @cb) ->
  27     @mode = MODE_HINTS
  28
  29   enterNormalMode: ->
  30     @mode = MODE_NORMAL
  31     @markers = @cb = undefined
  32
  33   pushKey: (keyStr, keyCode) ->
  34     if _maybeCommand(@mode, @keys, keyStr, keyCode)
  35       @keys.push keyStr
  36       return true
  37
  38     return false
  39
  40   execKeys: (charCode) ->
  41     if command = _getCommand @mode, @keys, charCode
  42       lastKey = @keys[@keys.length - 1]
  43       command @
  44       @keys = []
  45       return lastKey != 'Esc'
  46
  47   handleKeyDown: (keyboardEvent, keyStr) ->
  48     if @mode == MODE_NORMAL || keyStr == 'Esc'
  49       result = maybeCommand @keys.concat([keyStr])
  50     else if !keyboardEvent.ctrlKey and !keyboardEvent.metaKey
  51       if @mode == MODE_HINTS
  52         hintChars = getPref('hint_chars').toLowerCase()
  53         result = hintChars.search(utils.regexpEscape(keyStr)) > -1
  54       else if @mode == MODE_FIND
  55         result = true
  56
  57     if result then @keys.push keyStr
  58
  59     return result
  60
  61   handleKeyPress: (keyboardEvent) ->
  62     lastKeyStr = if @keys.length > 0 then @keys[@keys.length - 1] else undefined
  63     if @mode == MODE_NORMAL or lastKeyStr == 'Esc'
  64       if command = findCommand @keys
  65         command @
  66         @keys.length = 0
  67         return lastKeyStr != 'Esc'
  68     else if !keyboardEvent.ctrlKey and !keyboardEvent.metaKey
  69       @keys.length = 0
  70       if @mode == MODE_HINTS
  71         hintCharHandler @, lastKeyStr, keyboardEvent.charCode
  72         return true
  73       else if @mode == MODE_FIND
  74         findCharHandler @, lastKeyStr, keyboardEvent.charCode
  75         return true
  76
  77 findCommand = (keys) ->
  78   for i in [0...keys.length]
  79     if com = commands[keys.slice(i).join(',')]
  80       return com
  81
  82   return undefined
  83
  84 maybeCommand = (keys) ->
  85   for i in [0...keys.length]
  86     sequence = keys.slice(i).join(',')
  87     for seq, com of commands
  88       if seq.indexOf(sequence) == 0
  89         return true
  90
  91   return false
  92
  93 exports.Vim = Vim