extension/packages/prefs.coffee

   1 { classes: Cc, interfaces: Ci } = Components
   2
   3 { unload } = require 'unload'
   4
   5 PREF_BRANCH = 'extensions.VimFx.'
   6 DEFAULT_PREFS_FILE = 'defaults/preferences/defaults.js'
   7
   8 # Default values for preferences are now specified in
   9 # defaults/preferences/defaults.js
  10
  11 getBranchPref = (branch, key, defaultValue) ->
  12   type = branch.getPrefType(key)
  13
  14   switch type
  15     when branch.PREF_BOOL
  16       return branch.getBoolPref(key)
  17     when branch.PREF_INT
  18       return branch.getIntPref(key)
  19     when branch.PREF_STRING
  20       return branch.getCharPref(key)
  21     else
  22       if defaultValue != undefined
  23         return defaultValue
  24
  25 isPrefSet = do ->
  26   prefs = Cc['@mozilla.org/preferences-service;1'].getService(Ci.nsIPrefService)
  27   branch = prefs.getBranch(PREF_BRANCH)
  28
  29   return (key) ->
  30     branch.prefHasUserValue(key)
  31
  32 getPref = do ->
  33   prefs = Cc['@mozilla.org/preferences-service;1'].getService(Ci.nsIPrefService)
  34   branch = prefs.getBranch(PREF_BRANCH)
  35
  36   return (key, defaultValue = undefined) ->
  37     return getBranchPref(branch, key, defaultValue)
  38
  39 # Unicode String
  40 getComplexPref = do ->
  41   prefs = Cc['@mozilla.org/preferences-service;1'].getService(Ci.nsIPrefService)
  42   branch = prefs.getBranch(PREF_BRANCH)
  43
  44   return (key) ->
  45     return branch.getComplexValue(key, Ci.nsISupportsString).data
  46
  47 getFirefoxPref = do ->
  48   prefs = Cc['@mozilla.org/preferences-service;1'].getService(Ci.nsIPrefService)
  49   branch = prefs.getBranch('')
  50
  51   return (key, defaultValue = undefined) ->
  52     return getBranchPref(branch, key, defaultValue)
  53
  54 makePrefSetter = (branch) ->
  55   return (key, value) ->
  56     switch typeof value
  57       when 'boolean'
  58         branch.setBoolPref(key, value)
  59       when 'number'
  60         branch.setIntPref(key, value)
  61       when 'string'
  62         branch.setCharPref(key, value)
  63       else
  64         branch.clearUserPref(key)
  65
  66 # Assign and save Firefox preference value
  67 setPref = do ->
  68   prefs = Cc['@mozilla.org/preferences-service;1'].getService(Ci.nsIPrefService)
  69   return makePrefSetter(prefs.getBranch(PREF_BRANCH))
  70
  71 setDefaultPrefs = ->
  72   scriptLoader = Cc['@mozilla.org/moz/jssubscript-loader;1'].getService(Ci.mozIJSSubScriptLoader)
  73   ioService = Cc['@mozilla.org/network/io-service;1'].getService(Ci.nsIIOService)
  74   prefs = Cc["@mozilla.org/preferences-service;1"].getService(Ci.nsIPrefService)
  75
  76   baseUri = ioService.newURI(__SCRIPT_URI_SPEC__, null, null)
  77   uri = ioService.newURI(DEFAULT_PREFS_FILE, null, baseUri)
  78
  79   if uri.QueryInterface(Ci.nsIFileURL).file.exists()
  80     branch = prefs.getDefaultBranch("")
  81     scope = { pref: makePrefSetter(branch) }
  82     scriptLoader.loadSubScript(uri.spec, scope)
  83
  84 exports.isPrefSet         = isPrefSet
  85 exports.getPref           = getPref
  86 exports.getComplexPref    = getComplexPref
  87 exports.getFirefoxPref    = getFirefoxPref
  88 exports.setPref           = setPref
  89 exports.setDefaultPrefs   = setDefaultPrefs