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From adrian.c...@sandglass-software.com
Subject Re: one component includes a screen from another component--clarification
Date Thu, 06 Oct 2011 10:40:23 GMT
Setting up screen decorators can be a little tricky, but you can get  
things to work properly if you follow some simple rules:

1. Keep the component screen decorator (main-decorator) in the  
component's CommonScreens.xml file, but put all other decorators in  
the same file as the screens they decorate. I call these other  
decorators "sub-decorators" because they are decorated by the  
component decorator.

2. Do not include the location attribute when using the  
sub-decorators. When the location attribute is left empty, the widget  
renderer will look for the decorator in the current widget file. If  
you want to have the ability to replace the sub-decorator when the  
screen is reused, then put an expression in the location attribute  
that evaluates to an empty string in the sub-decorator's component.  
Other components that reuse screens decorated by sub-decorators can  
then set up variables so the location expression evaluates to the  
location of the replacement sub-decorator.

A good example of #2 can be found in  
framework/common/widget/SecurityScreens.xml. Look at how the  
SecurityDecorator sub-decorator is implemented.


Quoting Wai <bzb.ofbiz@gmail.com>:

> Hello,
> I would like to get a clarification of the following:
> I have 2 components.  ComponentA and componentB.
> In componentA, I define a screen, ComponentAScreen.
> In componentB, I defined a screen, ComponentBScreen.
> ComponentBScreen uses decorators defined in CommonScreens.xml in
> componentB's component directory.
> ComponentAScreen includes ComponentBScreen.
> The problem is that when I tried to display a page defined by
> ComponentAScreen, I get an ScreenRenderer exception indicating that it
> cannot find the decorator referenced by ComponentBScreen.  Further
> investigation showed that the decorator screens in ComponentBScreen was
> referenced using the directory path of componentA.
> Could someone verify that this is how things are supposed to work???
> Thanks,
> Wai
> --
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> Sent from the OFBiz - User mailing list archive at Nabble.com.

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