Doubt in screen widget

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Doubt in screen widget

dhilip kumar


    Hi,
I understand widget and decorator patterns in screen. But I am confused
how exactly is the widget-screen identifies the location to place the ftl files.
  Example : The following is the coding in \ecommerce\widget\commonscreens.xml.
  <widgets>
                <!-- render header -->
                <platform-specific><html><html-template location="component://ecommerce/webapp/ecommerce/includes/header.ftl"/></html></platform-specific>
               
                <container id="ecom-mainarea">
                    <!-- by default will render left-bar only if left/rightbarScreenName value not empty -->
    <include-screen name="${leftbarScreenName}" location="${leftbarScreenLocation}"/>
    <include-screen name="${rightbarScreenName}" location="${rightbarScreenLocation}"/>
               
                    <container style="${MainColumnStyle}">
                        <!-- render messages -->
                        <platform-specific><html><html-template location="component://common/webcommon/includes/messages.ftl"/></html></platform-specific>
                         <decorator-section-include name="body"/>
                    </container>
                   
                    <container style="endcolumns"/>
                </container>
               
                <!-- render footer -->
                <platform-specific><html><html-template location="component://ecommerce/webapp/ecommerce/includes/footer.ftl"/></html></platform-specific>
            </widgets>
 
This screen includes screens leftbar and rightbar. But how does it exactly places the content in the left and right.
what is the use of  "TemplateData.xml" ?
   
 
Thanks
  Thilip
   
 

 
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