Short description of ng.adapter
===============================

This package has developed as the library of small adapters for the
different dark purposes.

Adapter mtime
-------------

Adapter mtime intdends for getting object modification time. Object
modification time determine on the IPersistent level and this is an exactly
in the most cases, but sometimes we need some of hooks to know object
modification time and adapter mtime helps us in this.

Adapter mtime adapts IPersistent interface to IMTime interface. IMTime interface
has the following fields:
    
    mtime
       time of the last modification of object

    strftime(format)
        return time as format string, fromat see in man strftime

Adapter path
------------

Adapter path intdents for getting path from root object to current, Adapter can adopt
any objects to IPath interface. Interface IPath provide followed fields:

    path
        Path from root to current object maked from attribute __name__ of object in between;

    titledpath
        Path from root to current object maked from titles object in between. Titles getting from
        adapter title (ITitle interface);


Adapter title
-------------

Adapter title ntdends for getting object title (for any object).  Adapter can adopt
any objects to ITitle interface. Interface IPath provide followed fields:

    title
        Object title

If current object has not title property, property title of object, adopted
ti IZopeDublinCore return instead, If adopt to IZopeDublinCore is not possible,
property __name__ or class name return instead.

Adapter has been wrote in goot component style and it's posible to write adapter
to ITitle for any specific cases.


Adapter nsinterface
-------------------
   
Adapter nsinterface defince nsinterface namespace to get possibility adopt current
object to any interfacr. Some syntax sample followed::   

    <tal:block define="path context/++nsinterface++ng.adapter.IPath/path">
    
    </tal:block>
    
It usefaul, basicaly, in debugging purpose.

Adapter namechooser
-------------------

If this adapter will be actvated to some container, object, created in this
container will be accept __name__ from ITitle adapter.

To activate adappter, set interface ng.adapter.interfaces.INameChooserAble
on container.

Adapter pager
-------------

Adapter allow make pagers by list adopted to IPagerSource. Adapter quicly 
doing all evaluatiion needed  to provede ready results as methods.

Product content adapters from components with interfaces IContainer, IOrderedContainer and
ResultSet (returned by zope.catalog). 

Список методов IPager
.....................

    setPagerParameters(revert=None, orphan=None,size=None)
        Set pager parameters:
        
        revert
            Show list reverted;
            
        orphan
            Maximum orphaned items;
         
        size 
            One page chunk size;
         
        have_before
            True, if page before current exist;

        befores
            Key list from previos pages begins;
            
        beforeURLs
            URL list of previous pages;

        before
            Previous page;

        beforeURL = Field()
            URL of prefvious page;

        chunk
            Component list showed in current chunk (page);

        after
            Key of first item on next page;
            
        afterURL
            URL of next page;
            
        afters 
            Key list of first items on followed pages;

        afterURLs
            URL list of nest pages;

        have_after
            True, if next page exist;

        len 
            Common length of list;
        
Code Sample:

  <tal:block tal:condition="python:len(context) > 0">
    <table cellspacing="0" cellpadding="3" bgcolor="#CCDDFF" width="100%" 
        border="1" bordercolor="black" bordercolordark="#CCDDFF">
	    <tr><td>
		    <p class="docttl">Вложенные материалы
		</td></tr>
			
		<tal:block define="pager context/@@pager">
		<tal:block define="q python:pager.setPagerParameters(revert=True)"/>
			
		<tr tal:condition="pager/have_before"><td align="left">
			    <a href="" tal:attributes="href pager/beforeURL"> &lt;&lt;&lt;&lt;&lt;&lt;</a>
			  <tal:block repeat="item python:zip(range(1,10),pager.beforeURLs)">
			    [<a href="" tal:attributes="href python:item[1]" tal:content="python:item[0]"/>]
              </tal:block>			    
	    </td></tr>
			
		<div tal:repeat="item pager/chunk">
		    tal:block tal:on-error="structure python:'<tr><td>'+item.__name__+'</td></tr>'" 
		    tal:content="structure item/@@short"/>
		</div>

		<tr tal:condition="pager/have_after"><td align="right">
		    <tal:block repeat="item python:zip(range(1,10),pager.afterURLs)">
			    [<a href="" tal:attributes="href python:item[1]" tal:content="python:item[0]"/>]
            </tal:block>			    
			<a href="" tal:attributes="href pager/afterURL">  &gt;&gt;&gt;&gt;&gt; </a>
	    </td></tr>
      </tal:block>
			
    </table>

  </tal:block>


Adapter recordsize 
------------------

Apapter allow get object record size of ZODP. Any object can be adpoted to
ng.adapter.recordsize.IRecordSize interface and size can be read from size
attribute. IRecordSize interface contents:

    size 
        Object record size;

Object size evaluated by means of transformation into filestorage-like
format.

