extension/lib/vim-frame.coffee

   1 ###
   2 # Copyright Anton Khodakivskiy 2012, 2013.
   3 # Copyright Simon Lydell 2013, 2014.
   4 #
   5 # This file is part of VimFx.
   6 #
   7 # VimFx is free software: you can redistribute it and/or modify
   8 # it under the terms of the GNU General Public License as published by
   9 # the Free Software Foundation, either version 3 of the License, or
  10 # (at your option) any later version.
  11 #
  12 # VimFx is distributed in the hope that it will be useful,
  13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 # GNU General Public License for more details.
  16 #
  17 # You should have received a copy of the GNU General Public License
  18 # along with VimFx.  If not, see <http://www.gnu.org/licenses/>.
  19 ###
  20
  21 # This file is the equivalent to vim.coffee. `vim.window` is called
  22 # `vim.content` to be consistent with Firefox’s frame script terminology and to
  23 # avoid confusion about what it represents. There is one `VimFrame` instance for
  24 # each tab. It mostly tries to mimic the `Vim` class in vim.coffee, but also
  25 # keeps track of web page state. `VimFrame` is not part of the public API.
  26
  27 messageManager = require('./message-manager')
  28 utils          = require('./utils')
  29
  30 class VimFrame
  31   constructor: (@content) ->
  32     @mode = 'normal'
  33
  34     messageManager.listen('modeChange', ({ mode }) ->
  35       @mode = mode
  36     )
  37
  38     @resetState()
  39
  40   resetState: ->
  41     @state =
  42       lastInteraction:          null
  43       lastAutofocusPrevention:  null
  44       scrollableElements:       new WeakSet()
  45       lastFocusedTextInput:     null
  46
  47   options: (prefs) -> messageManager.get('options', {prefs})
  48
  49   enterMode: (@mode, args...) ->
  50     messageManager.send('vimMethod', {
  51       method: 'enterMode'
  52       args: [@mode, args...]
  53     })
  54
  55   onInput: (event) ->
  56     eventSubset = {}
  57     for key in ['key', 'code', 'altKey', 'ctrlKey', 'metaKey', 'shiftKey']
  58       eventSubset[key] = event[key]
  59     args = [eventSubset, utils.getFocusType(event), {isFrameEvent: true}]
  60     suppress = messageManager.get('vimMethodSync', {method: '_onInput', args})
  61     utils.suppressEvent(event) if suppress
  62     messageManager.send('onInput-frame', { suppress })
  63
  64   notify: (args...) ->
  65     messageManager.send('vimMethod', {method: 'notify', args})
  66
  67 module.exports = VimFrame