[richfaces-issues] [JBoss JIRA] (RF-12011) Gradient configuration in ecss

[Brian Leathem (JIRA)]

     [ https://issues.jboss.org/browse/RF-12011?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Brian Leathem updated RF-12011:
-------------------------------

    Fix Version/s: 4-Tracking

    
> Gradient configuration in ecss
> ------------------------------
>
>                 Key: RF-12011
>                 URL: https://issues.jboss.org/browse/RF-12011
>             Project: RichFaces
>          Issue Type: Feature Request
>      Security Level: Public(Everyone can see) 
>            Reporter: Dupont Dupont
>             Fix For: 4-Tracking
>
>
> For the moment, gradients are :
> # configured in resource-mappings.properties (i.e. https://github.com/richfaces/components/blob/develop/input/ui/src/main/resources/META-INF/richfaces/resource-mappings.properties)
> {noformat} 
> org.richfaces.images\:autocompleteButtonGradient.png=org.richfaces.renderkit.html.images.AutocompleteGradient\
>     {topColorParam=headerGradientColor ,bottomColorParam=headerBackgroundColor}
> {noformat} 
> # and then used in ecss files (i.e. https://github.com/richfaces/components/blob/develop/input/ui/src/main/resources/META-INF/resources/org.richfaces/Autocomplete.ecss).
> {noformat} 
> background-image: "url(#{resource['org.richfaces.images:autocompleteButtonGradient.png']})";
> {noformat} 
> A simpler solution could be allowing gradient configuration directly in the ecss file, e.g. 
> {noformat} 
> background-image:"url(#{resource['org.richfaces.dynamic:org.richfaces.renderkit.html.images.AutocompleteGradient?topColorParam=headerGradientColor&bottomColorParam=headerBackgroundColor']})";
> {noformat} 
> org.richfaces.dynamic being a special library name telling Richfaces to instantiate AutocompleteGradient and configure it on the fly.
> This would enable to get rid of resource-mappings.properties for simple use cases.
> N.B. : 
>  * a control must be implemented to control which classes can be dynamically instantiated (i.e. only allow classes implementing Java2DUserResource).
>  * ecss configuration must allow us to configure the gradient (c.f. topColorParam and bottomColorParam variables in our sample).

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