Package: falkolab.ext3.layer
Zope3 UI Layer, resource and viewlets bundles for ExtJS v3 JavaScript libraryIntroductionDownload ExtJS v3.x (http://extjs.com/products/extjs/download.php)
and put it in your operating system anywhere.
For example for me it is the following path: /usr/lib/ext-3
Within this folder must be located extracted ExtJS v3 framework distribution.Anywhere in you project register resource directory has named asext-3.
For example:<resourceDirectory
    layer="falkolab.ext3.layer.IExtJSLayer"
    name="ext-3"
    directory="/usr/lib/ext-3"
    />This package will looking for the resourceDirectory namedext-3,
so it’s important that you use the samenamein the resourceDirectory statement.How to use?This package provide two Viewlet Managers: IExtLayerCSS and IExtLayerJavaScript.
You may use it in you project skin template. For example like this:<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
            "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"
    i18n:domain="mysite">
<head>
    ...
    <meta http-equiv="Content-Type" content="text/html;charset=utf-8" />
    <meta http-equiv="cache-control" content="no-cache" />
    <meta http-equiv="pragma" content="no-cache" />
    <tal:block replace="structure provider:IExtLayerCSS" />
    <tal:block replace="structure provider:IExtLayerJavaScript" />
</head>
<body>
...
</body>
</html>Or derive/implement your own managers for falkolab.ext3.layer.IExtLayerCSS
and falkolab.ext3.layer.IExtLayerJavaScript interfaces.NOTE: For necessary script including order, please use ordered manager:
zope.viewlet.manager.WeightOrderedViewletManagerThis package contain several viewlet bunles for ExtJS. Use one of them according base
library you use:ext-all.cssAll ExtJS library CSS styles.ext-standaloneExtJS library with own adapter (without any external dependences).
IExtStandaloneLayer and IExtStandaloneDebugLayer layers.ext-jqueryExtJS library with jQuery adapter (WARNING: read note below).
IExtJQueryLayer and IExtJQueryDebugLayer layers.ext-yuiExtJS library with YUI adapter (WARNING: read note below).
IExtYUILayer and IExtYUIDebugLayer layers.ext-prototypeExtJS library with Prototype adapter (WARNING: read note below).
IExtPrototypeLayer and  IExtPrototypeDebugLayer layers.NOTE: For bundles which dependet on external library jQuery, YUI or Prototype
you must manualy register corresponding resources in your project and place it to
your template before this package inclusions.
Please seehttp://extjs.com/learn/Ext_Getting_Started#What_is_the_proper_include_order_for_my_JavaScript_files.3Ffor details.Skin layer system example:from z3c.layer.pagelet import IPageletBrowserLayer
from zope.viewlet.interfaces import IViewletManager
from zope.publisher.interfaces.browser import IBrowserRequest
from falkolab.ext3.layer import  IExtJQueryLayer, IExtJQueryDebugLayer
from falkolab.ext3.layer.interfaces import IExtLayerCSS, IExtLayerJavaScript

class myskin(IExtJQueryLayer):
    """ layer for skin base components """

class IMySkin(myskin, IPageletBrowserLayer):
    """ IMySkin skin """

class IMyDebugSkin(IExtJQueryDebugLayer, IMySkin):
    """ IMySkin debug skin """

class ITitle(IViewletManager):
    """Title viewlet manager."""

# This two interfaces for case when you use own Viewlet Managers
# registration for combine site templete and falkolab.ext3.layer viewlets.
class ICSS(IExtLayerCSS):
    """CSS viewlet manager."""

class IJavaScript(IExtLayerJavaScript):
    """JavaScript viewlet manager."""CHANGES1.0.1 (2009-09-30)bugfix: Replacement adapter script name for viewletsin compliance with debug version1.0.0a (2009-06-05)Initial release.