packages/utils.coffee

   1 { WindowTracker, isBrowserWindow } = require 'window-utils'
   2
   3 { interfaces: Ci, classes: Cc } = Components
   4
   5 sss = Cc["@mozilla.org/content/style-sheet-service;1"].getService(Ci.nsIStyleSheetService)
   6 ios = Cc["@mozilla.org/network/io-service;1"].getService(Ci.nsIIOService)
   7
   8 class Bucket
   9   constructor: (@idFunc, @newFunc) ->
  10     @bucket = {}
  11
  12   get: (obj) ->
  13     id = @idFunc obj
  14     @bucket[id] or @bucket[id] = @newFunc obj
  15
  16   forget: (obj) ->
  17     id = @idFunc obj
  18     delete @bucket[id] if id
  19
  20
  21 class WindowEventTracker
  22   constructor: (events, eventFilter = null) ->
  23
  24     handlerFilter = (handler) ->
  25       return (event) ->
  26         if !eventFilter or eventFilter event
  27           handler event
  28
  29     addEventListeners = (window) ->
  30       for name, handler of events
  31         window.addEventListener name, handlerFilter(handler), true
  32
  33     removeEventListeners = (window) ->
  34       for name, handler of events
  35         window.removeEventListener name, handlerFilter(handler), true
  36
  37     @windowTracker = new WindowTracker
  38       track: (window) ->
  39         if isBrowserWindow window
  40           addEventListeners window
  41
  42       untrack: (window) ->
  43         if isBrowserWindow window
  44           removeEventListeners window
  45
  46   start: -> @windowTracker.start()
  47   stop: -> @windowTracker.stop()
  48
  49 HTMLInputElement    = Ci.nsIDOMHTMLInputElement
  50 HTMLTextAreaElement = Ci.nsIDOMHTMLTextAreaElement
  51 HTMLSelectElement   = Ci.nsIDOMHTMLSelectElement
  52 XULDocument         = Ci.nsIDOMXULDocument
  53 XULElement          = Ci.nsIDOMXULElement
  54 HTMLDocument        = Ci.nsIDOMHTMLDocument
  55 HTMLElement         = Ci.nsIDOMHTMLElement
  56 Window              = Ci.nsIDOMWindow
  57 ChromeWindow        = Ci.nsIDOMChromeWindow
  58
  59 isRootWindow = (window) ->
  60   window.location == "chrome://browser/content/browser.xul"
  61
  62 getEventWindow = (event) ->
  63   if event.originalTarget instanceof Window
  64     return event.originalTarget
  65   else
  66     doc = event.originalTarget.ownerDocument or event.originalTarget
  67     if doc instanceof HTMLDocument or doc instanceof XULDocument
  68       return doc.defaultView
  69
  70 getEventTabWindow = (event) ->
  71   if window = getEventWindow event
  72     if isRootWindow window
  73       return window.gBrowser.tabs.selectedItem?.contentWindow.wrappedJSObject
  74     else
  75       return window
  76
  77 getEventRootWindow = (event) ->
  78   if window = getEventWindow event
  79     return getRootWindow window
  80
  81 getEventTabBrowser = (event) ->
  82   cw.gBrowser if cw = getEventRootWindow event
  83
  84
  85 getRootWindow = (window) ->
  86   return window.QueryInterface(Ci.nsIInterfaceRequestor)
  87                .getInterface(Ci.nsIWebNavigation)
  88                .QueryInterface(Ci.nsIDocShellTreeItem)
  89                .rootTreeItem
  90                .QueryInterface(Ci.nsIInterfaceRequestor)
  91                .getInterface(Window);
  92
  93 isElementEditable = (element) ->
  94   return element.isContentEditable or \
  95          element instanceof HTMLInputElement or \
  96          element instanceof HTMLTextAreaElement or \
  97          element instanceof HTMLSelectElement
  98
  99 getWindowId = (window) ->
 100   return window.QueryInterface(Components.interfaces.nsIInterfaceRequestor)
 101                .getInterface(Components.interfaces.nsIDOMWindowUtils)
 102                .outerWindowID
 103
 104 getSessionStore = ->
 105   Cc["@mozilla.org/browser/sessionstore;1"].getService(Ci.nsISessionStore);
 106
 107 cssUri = do () ->
 108   tools = {}
 109   Cu.import "resource://gre/modules/Services.jsm", tools
 110   (name) ->
 111     baseURI = tools.Services.io.newURI __SCRIPT_URI_SPEC__, null, null
 112     uri = tools.Services.io.newURI "resources/#{ name }.css", null, baseURI
 113     return uri
 114
 115 loadCss = (name) ->
 116   sss.loadAndRegisterSheet(cssUri(name), sss.USER_SHEET)
 117
 118 unloadCss = (name) ->
 119   uri = cssUri(name)
 120   if sss.sheetRegistered(uri, sss.USER_SHEET)
 121     sss.unregisterSheet(uri, sss.USER_SHEET)
 122
 123 exports.WindowEventTracker      = WindowEventTracker
 124 exports.Bucket                  = Bucket
 125 exports.isRootWindow            = isRootWindow
 126 exports.getEventWindow          = getEventWindow
 127 exports.getEventTabWindow       = getEventTabWindow
 128 exports.getEventRootWindow      = getEventRootWindow
 129 exports.getEventTabBrowser      = getEventTabBrowser
 130
 131 exports.getWindowId             = getWindowId
 132 exports.getRootWindow           = getRootWindow
 133 exports.isElementEditable       = isElementEditable
 134 exports.getSessionStore         = getSessionStore
 135
 136 exports.loadCss                 = loadCss
 137 exports.unloadCss               = unloadCss