How to check if a decorator-section is empty

[Bruno Busco]

Hi list,
could someone please tell me if there is any way to check in a screen
condition if a decorator section is empty?

I would like to do something similar to this:

<container style="contentarea">
<decorator-section-include name="pre-body"/>
<container id="column-container">
    <section>
        <condition>
            <if-decorator-section-empty decorator-section="left-bar"/>
        </condition>
        <widgets>
            <container id="content-main-section">
                <decorator-section-include name="body"/>
            </container>
        </widgets>
        <fail-widgets>
            <container style="left">
                <decorator-section-include name="left-bar"/>
            </container>
            <container id="content-main-section" style="leftonly">
                <decorator-section-include name="body"/>
            </container>
        </fail-widgets>
    </section>
</container>

Basically this is used to have the leftbar filled using a new
decorator-section defined in the GlobalDecorator and not using any
more the leftbarScreenName and leftbarScreenLocation so that for
instance the CommonCatalogDecorator would change from

    <screen name="CommonCatalogDecorator">
        <section>
            <actions>
                <set field="leftbarScreenName" value="leftbar"/>
                <set field="leftbarScreenLocation"
value="component://product/widget/catalog/CommonScreens.xml"/>
                <set field="MainColumnStyle" value="leftonly"/>
            </actions>
            <widgets>
                <decorator-screen name="main-decorator"
location="${parameters.mainDecoratorLocation}">
                    <decorator-section name="pre-body">
                        <section>
                            <!-- do check for CATALOG, _VIEW permission -->
                            <condition>
                                <and>
..................
to

    <screen name="CommonCatalogDecorator">
        <section>
            <widgets>
                <decorator-screen name="main-decorator"
location="${parameters.mainDecoratorLocation}">
                    <decorator-section name="left-bar">
                        <include-screen name="leftbar"/>
                    </decorator-section>
                    <decorator-section name="pre-body">
                        <section>
                            <!-- do check for CATALOG, _VIEW permission -->
                            <condition>
                                <and>

The problem I have found is that the GlobalDecorator needs to apply
the "leftonly" style to the <container id="content-main-section"> only
if the leftbar does include content.

Any thought about this?

Thank you so much,
Bruno

[Bruno Busco]

I have added a new ScreenCondition in the ModelScreenCondition.java as follows:
    public static class IfEmptyDecoratorSection extends ScreenCondition {
        protected FlexibleStringExpander decoratorSectionExdr;

        public IfEmptyDecoratorSection(ModelScreen modelScreen,
Element condElement) {
            super (modelScreen, condElement);
            this.decoratorSectionExdr =
FlexibleStringExpander.getInstance(condElement.getAttribute("decorator-section"));
        }

        @Override
        public boolean eval(Map<String, Object> context) {
            Debug.logWarning("if-empty-decorator-section TEST", module);
            return false;
        }
    }

but I do not understand how to actually check for the decorator
section being empty or not.
Could somebody help me?
Thank you,
Bruno

2009/11/28 Bruno Busco <[hidden email]>:

> Hi list,
> could someone please tell me if there is any way to check in a screen
> condition if a decorator section is empty?
>
> I would like to do something similar to this:
>
> <container style="contentarea">
> <decorator-section-include name="pre-body"/>
> <container id="column-container">
>    <section>
>        <condition>
>            <if-decorator-section-empty decorator-section="left-bar"/>
>        </condition>
>        <widgets>
>            <container id="content-main-section">
>                <decorator-section-include name="body"/>
>            </container>
>        </widgets>
>        <fail-widgets>
>            <container style="left">
>                <decorator-section-include name="left-bar"/>
>            </container>
>            <container id="content-main-section" style="leftonly">
>                <decorator-section-include name="body"/>
>            </container>
>        </fail-widgets>
>    </section>
> </container>
>
> Basically this is used to have the leftbar filled using a new
> decorator-section defined in the GlobalDecorator and not using any
> more the leftbarScreenName and leftbarScreenLocation so that for
> instance the CommonCatalogDecorator would change from
>
>    <screen name="CommonCatalogDecorator">
>        <section>
>            <actions>
>                <set field="leftbarScreenName" value="leftbar"/>
>                <set field="leftbarScreenLocation"
> value="component://product/widget/catalog/CommonScreens.xml"/>
>                <set field="MainColumnStyle" value="leftonly"/>
>            </actions>
>            <widgets>
>                <decorator-screen name="main-decorator"
> location="${parameters.mainDecoratorLocation}">
>                    <decorator-section name="pre-body">
>                        <section>
>                            <!-- do check for CATALOG, _VIEW permission -->
>                            <condition>
>                                <and>
> ..................
> to
>
>    <screen name="CommonCatalogDecorator">
>        <section>
>            <widgets>
>                <decorator-screen name="main-decorator"
> location="${parameters.mainDecoratorLocation}">
>                    <decorator-section name="left-bar">
>                        <include-screen name="leftbar"/>
>                    </decorator-section>
>                    <decorator-section name="pre-body">
>                        <section>
>                            <!-- do check for CATALOG, _VIEW permission -->
>                            <condition>
>                                <and>
>
> The problem I have found is that the GlobalDecorator needs to apply
> the "leftonly" style to the <container id="content-main-section"> only
> if the leftbar does include content.
>
> Any thought about this?
>
> Thank you so much,
> Bruno
>

[Bruno Busco]

Don't mind,
I finally found this solution:
        public boolean eval(Map<String, Object> context) {
            Map<String, Object> sectionsList =
UtilGenerics.toMap(context.get("sections"));
            return
!sectionsList.containsKey(this.decoratorSectionExdr.expandString(context));
        }

Thank you anyway.
-Bruno

2009/11/29 Bruno Busco <[hidden email]>:

> I have added a new ScreenCondition in the ModelScreenCondition.java as follows:
>    public static class IfEmptyDecoratorSection extends ScreenCondition {
>        protected FlexibleStringExpander decoratorSectionExdr;
>
>        public IfEmptyDecoratorSection(ModelScreen modelScreen,
> Element condElement) {
>            super (modelScreen, condElement);
>            this.decoratorSectionExdr =
> FlexibleStringExpander.getInstance(condElement.getAttribute("decorator-section"));
>        }
>
>        @Override
>        public boolean eval(Map<String, Object> context) {
>            Debug.logWarning("if-empty-decorator-section TEST", module);
>            return false;
>        }
>    }
>
> but I do not understand how to actually check for the decorator
> section being empty or not.
> Could somebody help me?
> Thank you,
> Bruno
>
> 2009/11/28 Bruno Busco <[hidden email]>:
>> Hi list,
>> could someone please tell me if there is any way to check in a screen
>> condition if a decorator section is empty?
>>
>> I would like to do something similar to this:
>>
>> <container style="contentarea">
>> <decorator-section-include name="pre-body"/>
>> <container id="column-container">
>>    <section>
>>        <condition>
>>            <if-decorator-section-empty decorator-section="left-bar"/>
>>        </condition>
>>        <widgets>
>>            <container id="content-main-section">
>>                <decorator-section-include name="body"/>
>>            </container>
>>        </widgets>
>>        <fail-widgets>
>>            <container style="left">
>>                <decorator-section-include name="left-bar"/>
>>            </container>
>>            <container id="content-main-section" style="leftonly">
>>                <decorator-section-include name="body"/>
>>            </container>
>>        </fail-widgets>
>>    </section>
>> </container>
>>
>> Basically this is used to have the leftbar filled using a new
>> decorator-section defined in the GlobalDecorator and not using any
>> more the leftbarScreenName and leftbarScreenLocation so that for
>> instance the CommonCatalogDecorator would change from
>>
>>    <screen name="CommonCatalogDecorator">
>>        <section>
>>            <actions>
>>                <set field="leftbarScreenName" value="leftbar"/>
>>                <set field="leftbarScreenLocation"
>> value="component://product/widget/catalog/CommonScreens.xml"/>
>>                <set field="MainColumnStyle" value="leftonly"/>
>>            </actions>
>>            <widgets>
>>                <decorator-screen name="main-decorator"
>> location="${parameters.mainDecoratorLocation}">
>>                    <decorator-section name="pre-body">
>>                        <section>
>>                            <!-- do check for CATALOG, _VIEW permission -->
>>                            <condition>
>>                                <and>
>> ..................
>> to
>>
>>    <screen name="CommonCatalogDecorator">
>>        <section>
>>            <widgets>
>>                <decorator-screen name="main-decorator"
>> location="${parameters.mainDecoratorLocation}">
>>                    <decorator-section name="left-bar">
>>                        <include-screen name="leftbar"/>
>>                    </decorator-section>
>>                    <decorator-section name="pre-body">
>>                        <section>
>>                            <!-- do check for CATALOG, _VIEW permission -->
>>                            <condition>
>>                                <and>
>>
>> The problem I have found is that the GlobalDecorator needs to apply
>> the "leftonly" style to the <container id="content-main-section"> only
>> if the leftbar does include content.
>>
>> Any thought about this?
>>
>> Thank you so much,
>> Bruno
>>
>