packages/utils.coffee

   1 { WindowTracker, isBrowserWindow } = require 'window-utils'
   2
   3 class WindowEventTracker
   4   constructor: (events, eventFilter = null) ->
   5
   6     handlerFilter = (handler) ->
   7       return (event) ->
   8         if !eventFilter or eventFilter event
   9           handler event
  10
  11     addEventListeners = (window) ->
  12       for name, handler of events
  13         window.addEventListener name, handlerFilter(handler), true
  14
  15     removeEventListeners = (window) ->
  16       for name, handler of events
  17         window.removeEventListener name, handlerFilter(handler), true
  18
  19     @windowTracker = new WindowTracker
  20       track: (window) ->
  21         if isBrowserWindow window
  22           addEventListeners window
  23
  24       untrack: (window) ->
  25         if isBrowserWindow window
  26           removeEventListeners window
  27
  28   start: -> @windowTracker.start()
  29   stop: -> @windowTracker.stop()
  30
  31 { interfaces: Ci } = Components
  32
  33 HTMLInputElement    = Ci.nsIDOMHTMLInputElement
  34 HTMLTextAreaElement = Ci.nsIDOMHTMLTextAreaElement
  35 HTMLSelectElement   = Ci.nsIDOMHTMLSelectElement
  36 XULDocument         = Ci.nsIDOMXULDocument
  37 XULElement          = Ci.nsIDOMXULElement
  38 HTMLDocument        = Ci.nsIDOMHTMLDocument
  39 HTMLElement         = Ci.nsIDOMHTMLElement
  40 Window              = Ci.nsIDOMWindow
  41 ChromeWindow        = Ci.nsIDOMChromeWindow
  42
  43 isRootWindow = (window) ->
  44   window.location == "chrome://browser/content/browser.xul"
  45
  46 getEventWindow = (event) ->
  47   if event.originalTarget instanceof Window
  48     return event.originalTarget
  49   else
  50     doc = event.originalTarget.ownerDocument or event.originalTarget
  51     if doc instanceof HTMLDocument or doc instanceof XULDocument
  52       return doc.defaultView
  53
  54 getEventTabWindow = (event) ->
  55   if window = getEventWindow event
  56     if isRootWindow window
  57       return window.gBrowser.tabs.selectedItem?.contentWindow.wrappedJSObject
  58     else
  59       return window
  60
  61 getEventRootWindow = (event) ->
  62   if window = getEventWindow event
  63     return getRootWindow window
  64
  65 getEventTabBrowser = (event) ->
  66   cw.gBrowser if cw = getEventRootWindow event
  67
  68
  69 getRootWindow = (window) ->
  70   return window.QueryInterface(Ci.nsIInterfaceRequestor)
  71                .getInterface(Ci.nsIWebNavigation)
  72                .QueryInterface(Ci.nsIDocShellTreeItem)
  73                .rootTreeItem
  74                .QueryInterface(Ci.nsIInterfaceRequestor)
  75                .getInterface(Window);
  76
  77 isElementEditable = (element) ->
  78   return element.isContentEditable or \
  79          element instanceof HTMLInputElement or \
  80          element instanceof HTMLTextAreaElement or \
  81          element instanceof HTMLSelectElement
  82
  83 getWindowId = (window) ->
  84   return window.QueryInterface(Components.interfaces.nsIInterfaceRequestor)
  85                .getInterface(Components.interfaces.nsIDOMWindowUtils)
  86                .outerWindowID
  87
  88 getSessionStore = ->
  89   Cc["@mozilla.org/browser/sessionstore;1"].getService(Ci.nsISessionStore);
  90
  91 exports.WindowEventTracker      = WindowEventTracker
  92 exports.isRootWindow            = isRootWindow
  93 exports.getEventWindow          = getEventWindow
  94 exports.getEventTabWindow       = getEventTabWindow
  95 exports.getEventRootWindow      = getEventRootWindow
  96 exports.getEventTabBrowser      = getEventTabBrowser
  97
  98 exports.getWindowId             = getWindowId
  99 exports.getRootWindow           = getRootWindow
 100 exports.isElementEditable       = isElementEditable
 101 exports.getSessionStore         = getSessionStore