Alloy Showcase - Liferay Faces

FacesContextHelperUtil

Note

alloy:outputlink is intended to be used to render a simple <a href="...">hyperlink</a> that requests a URL via HTTP GET.
alloy:link is intended to be used to render a hyperlink that navigates to other JSF views via HTTP GET, or perhaps to re-render the same view with different view parameters via f:param child tags.

alloy:outputLink

OutputLink is a UIOutput component that renders an <a> element (hyperlink). Since it extends HtmlOutputLink, it supports all the features of h:outputLink.

Conversion Usage

The value attribute can be converted via the converter attribute or by specifying an f:converter type of child tag. In addition, custom user feedback can be specified via the converterMessage attribute.

Source Code

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<ui:composition xmlns="http://www.w3.org/1999/xhtml" xmlns:alloy="http://liferay.com/faces/alloy"
    xmlns:f="http://xmlns.jcp.org/jsf/core" xmlns:ui="http://xmlns.jcp.org/jsf/facelets">
    <alloy:form>
        <alloy:outputLabel value="#{i18n['country']}" />
        <alloy:selectOneMenu id="selectOneMenuId" value="#{outputLinkModelBean.country}">
            <f:selectItems value="#{countryService.allCountries}" var="country" itemValue="#{country}"
                itemLabel="#{country.countryName}" />
            <f:ajax render="selectOneMenuId outputLinkId" />
            <f:converter converterId="com.liferay.faces.showcase.converter.CountryConverter" />
        </alloy:selectOneMenu>
        <br />
        <alloy:outputLink id="outputLinkId" converter="com.liferay.faces.showcase.converter.CountryGmapConverter"
            target="_blank" value="#{outputLinkModelBean.country.countryId}">
            <alloy:outputText value="#{i18n['link-to-a-map-of']} #{outputLinkModelBean.country.countryName}" />
        </alloy:outputLink>
    </alloy:form>
</ui:composition>
 
 
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@ManagedBean
@RequestScoped
public class OutputLinkModelBean {
    @ManagedProperty(value = "#{countryService}")
    private CountryService countryService;
    // Private properties
    private Country country;
    public Country getCountry() {
        return country;
    }
    public CountryService getCountryService() {
        return countryService;
    }
    @PostConstruct
    public void postConstruct() {
        this.country = countryService.getAllCountries().get(0);
    }
    public void setCountry(Country country) {
        this.country = country;
    }
    public void setCountryService(CountryService countryService) {
        this.countryService = countryService;
    }
}
 
 
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@FacesConverter(value = "com.liferay.faces.showcase.converter.CountryGmapConverter")
public class CountryGmapConverter implements Converter {
    // Static field must be declared volatile in order for the double-check idiom to work (requires JRE 1.5+)
    private static volatile Map<Long, Country> countryMap;
    @Override
    public Object getAsObject(FacesContext facesContext, UIComponent uiComponent, String value) {
        // no-op
        return null;
    }
    @Override
    public String getAsString(FacesContext facesContext, UIComponent uiComponent, Object value) {
        Country country = getCountryMap(facesContext).get(value);
        String URL = "https://www.google.com/maps/place/";
        try {
            return URL + URLEncoder.encode(country.getCountryName(), "UTF-8");
        }
        catch (UnsupportedEncodingException e) {
            e.printStackTrace();
            return null;
        }
    }
    protected Map<Long, Country> getCountryMap(FacesContext facesContext) {
        Map<Long, Country> countryMap = CountryGmapConverter.countryMap;
        // First check without locking (not yet thread-safe)
        if (countryMap == null) {
            synchronized (CountryGmapConverter.class) {
                countryMap = CountryGmapConverter.countryMap;
                // Second check with locking (thread-safe)
                if (countryMap == null) {
                    ELResolver elResolver = facesContext.getApplication().getELResolver();
                    ELContext elContext = facesContext.getELContext();
                    CountryService countryService = (CountryService) elResolver.getValue(elContext, null,
                            "countryService");
                    countryMap = CountryGmapConverter.countryMap = countryService.getCountryMap();
                }
            }
        }
        return countryMap;
    }
}
 
 
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Liferay Faces Alloy 4.1.1 + Liferay Faces Bridge Implementation 5.0.0 + Showcase Common 4.0.0 + Liferay Faces Util 3.4.1 + Mojarra 2.2.20

Geen: liferay-75cdbc7df5-mdsvm:8080: