This solution works for T2 because the way modules are executed. For T3, which I don't use yet, I think a solution based on valves could replace the new screen impl.
On Wed, 2002-03-20 at 17:08, Leandro Rodrigo Saad Cruz wrote: > > > > ----- Original Message ----- > > From: "Leandro Rodrigo Saad Cruz" <[EMAIL PROTECTED]> > > To: "Turbine Users List" <[EMAIL PROTECTED]> > > Sent: Tuesday, March 19, 2002 3:52 PM > > Subject: Re: Localization > > > > > > > You can use the Localization accessor with any locale you would like. > > > Maybe you can change TLocalizationService.java or LocalizationTool.java > > > to allow some order or user preference regarding localized objects. > > > I created a class called LocaleHelper that has the business logic used > > > to pick up a locale acording to values in user session and http headers. > > > If you wnat I can send it to you. > > Ok.. that's what I've done. > I need to grab *localized objects and maybe choose between **localized > templates > > * to accomplish this I wrote LocalizationHelper, this class is used in > behalf of *new* LocalizationTool and encapsulates the logic that chooses > locales. > > ** I wrote a new Screen that tries to find different templates accordign > to some locale info. For example : locale=pt_BR, then > SomeTemplate-pt_BR.vm is looked up, then SomeTemplate.vm > > OBS : you will have to change the package of this files and possibly > some code (chanbe ACCEPTED_LOACES for example) to make it work. > > Want any help ?? > > To see it working visit > http://www.intercontinental.ind.br:8180/inter/servlet/main > this site is supposed to be viewed in English and Portuguese > > -- > Leandro Rodrigo Saad Cruz > IT - Inter Business Tecnologia e Servicos (IB) > http://www.ibnetwork.com.br > ---- > > package br.com.ibnetwork.intercontinental.modules.screens; > > //APP > import br.com.ibnetwork.intercontinental.services.localization.LocalizationHelper; > > //T2 > import org.apache.turbine.util.RunData; > import org.apache.turbine.util.Log; > import org.apache.turbine.modules.screens.VelocityScreen; > import org.apache.turbine.services.template.TurbineTemplate; > import org.apache.turbine.services.velocity.TurbineVelocity; > import org.apache.velocity.context.Context; > import org.apache.velocity.app.Velocity; > import org.apache.ecs.ConcreteElement; > > //JAVA > import java.util.Locale; > import java.io.File; > > /** > * This module is responsible for searching a template file accordign to >LocalizationHelper.getLocale() > * <br> > * This way we can stil use links like $link.setPage("SomeTemplate.vm") and this >module will handle the template engine the right template. For Example : > * <br> > * <b>USER_LOCALE = pt_BR</b> > * <br> > * search for : SomeTemplate-pt_BR.vm, then SomeTemplate.vm .... > * > * @author <a href="mailto:[EMAIL PROTECTED]";>Leandro Rodrigo Saad Cruz</a> > */ > public class IntercontinentalVelocityScreen extends VelocityScreen > { > > /** > * Este metodo sera executado apos os metodos dos screens que estendem esta >classe<br> > * Sua funcao eh tentar localizar um template com o mesmo nome do presente em >RunData, mas com conteudo sensivel ao locale correto. > * O locale pesquisado pode variar de acordo com as regras em >LocalizationHelper. > * Este m�dulo apenas faz uma tentativa de mudar o template, caso o >template-locale n�o exista, o template original ser� executado > */ > public void setTemplateLocalizationExtension(RunData data) > { > Locale locale = LocalizationHelper.getLocale(data); > Log.debug("debug","IntercontinentalScreen - Searching for new template for >locale["+locale+"]"); > if(locale != null) > { > try > { > //caso algum locale esteja disponivel nos tentaremos achar outros >template > String templateName = >TurbineTemplate.getScreenTemplateName(data.getTemplateInfo().getScreenTemplate()); > Log.debug("debug","IntercontinentalScreen - original >template["+templateName+"]"); > >data.setScreenTemplate(composeLocaleInfoAndTemplateName(templateName,locale)); > } > catch(Exception e) > { > Log.debug("Erro",e); > //em caso de erro, o template original sera pesquisado > } > } > } > > /** > * This method is called by the Screenloader to construct the > * Screen. > * > * @param data Turbine information. > * @return A ConcreteElement. > * @exception Exception, a generic exception. > */ > public ConcreteElement doBuild( RunData data ) > throws Exception > { > Log.debug("debug","IntercontinentalScreen - Executing doBuild(data)"); > ConcreteElement out = null; > > try > { > doBuildTemplate(data); > setTemplateLocalizationExtension(data); > out = buildTemplate(data); > } > finally > { > doPostBuildTemplate(data); > } > > return out; > } > > private String composeLocaleInfoAndTemplateName(String templateName,Locale >locale) > { > int pathSeparatorPosition = templateName.lastIndexOf("/"); > if(pathSeparatorPosition >= 0) > { > > String minusPath = templateName.substring(pathSeparatorPosition + 1); > String path = templateName.substring(0,pathSeparatorPosition+1); > Log.debug("debug","IntercontinentalScreen - path["+path+"] >name["+minusPath+"]"); > int dotPosition = minusPath.lastIndexOf("."); > StringBuffer sb = new StringBuffer(); > sb.append(path) > .append(minusPath.substring(0,dotPosition)) > .append("-") > .append(locale) > .append(minusPath.substring(dotPosition)); > String newTemplateName = sb.toString(); > if(Velocity.templateExists("/screens"+newTemplateName)) > { > Log.info("debug","IntercontinentalScreen - localizedTemplateName >found ["+newTemplateName+"] "); > return newTemplateName; > } > } > Log.info("debug","IntercontinentalScreen - localizedTemplateName found >["+templateName+"] "); > return templateName; > } > > } > ---- > > package br.com.ibnetwork.intercontinental.services.localization; > > //T2 > import org.apache.turbine.util.Log; > import org.apache.turbine.util.RunData; > import org.apache.turbine.services.localization.Localization; > > //JAVA > import java.util.Locale; > import java.util.StringTokenizer; > > /** > * This class is a helper tool to be used when you have to decide which Locale to >choose. > * This implementation follows this criteria : <br> > * i - first it checks to see if there is locale in the user session <br> > * ii - then it tries to build a locale from HTTP headers <br> > * iii - then it uses the default locale in TR.conf <br> > * > * @author <a href="mailto:[EMAIL PROTECTED]";>Leandro Rodrigo Saad Cruz</a> > */ > public class LocalizationHelper > { > /** > * Key used to put a Locale Object > * into the session and used as a form field name > * OBS : if you want this to work between user logins you will have to patch >Turbine.java to not exclude this key/val from Session > */ > public static final String USER_LOCALE = "user.locale"; > > > /** > * Key used to define the locale separator char > */ > public static final String SEPARATOR = "_"; > > > /** > * All locales that we are prepard to handle PORTUGUES and ENGLISH > * <br> > * OBS : Remenber, if you want do add the locales to this array you will have to >add new templates to your system too > */ > public static Locale[] ACCEPTED_LOCALES = { new Locale("pt","BR"), >Locale.US,Locale.ENGLISH }; > > /** > * Performs Locale selection > */ > public static Locale getLocale(RunData data) > { > //Session > Locale locale = (Locale) ((RunData)data).getSession().getValue(USER_LOCALE); > > //HEADERS HTTP > if(locale == null) > { > locale = Localization.getLocale( ((RunData) data).getRequest() ); > boolean accepted = false; > for(int i=0 ; i < ACCEPTED_LOCALES.length ; i++) > { > Log.debug("debug","LocalizationHelper: searching >locale["+ACCEPTED_LOCALES[i]+"] in ACCEPTED list"); > if(locale.equals(ACCEPTED_LOCALES[i])) > { > accepted = true; > break; > } > } > locale = (accepted == false ? null : locale); > } > > //TR.conf > if(locale == null) > { > locale = >Localization.getBundle(Localization.getDefaultBundleName()).getLocale(); > } > return locale; > } > > /** > * helper method used to build a locale from HTTP HEADERS > * @return a new locale obj or null when an error occur > */ > public static Locale buildLocaleFromParameter(String param) > { > if(param != null) > { > Locale locale; > StringTokenizer st = new StringTokenizer(param,SEPARATOR); > int total = st.countTokens(); > String tokens[] = new String[total]; > while (st.hasMoreTokens()) > { > String token = st.nextToken(); > Log.debug("debug","TOKEN ["+token+"]"); > tokens[--total] = token; > } > if(tokens.length == 2) > { > return new Locale(tokens[1],tokens[0]); > } > if(tokens.length == 3) > { > return new Locale(tokens[2],tokens[1],tokens[0]); > } > } > return null; > } > } > ---- > > package br.com.ibnetwork.intercontinental.services.localization; > > //APP > > //T2 > import org.apache.turbine.services.localization.Localization; > import org.apache.turbine.services.pull.ApplicationTool; > import org.apache.turbine.om.security.User; > import org.apache.turbine.util.Log; > import org.apache.turbine.util.RunData; > > > //JAVA > import java.util.Locale; > import java.util.MissingResourceException; > import java.util.ResourceBundle; > > /** > * Localization Tool usado nos templates para disponibilizar conte�do localizado com >ajuda de > * {@link br.com.ibnetwork.intercontinental.services.localization.LocalizationHelper} > * > * @author <a href="mailto:[EMAIL PROTECTED]";>Leandro Rodrigo Saad Cruz</a> > */ > public class LocalizationTool implements ApplicationTool > { > > > /** > * The language and country information parsed from the request's > * <code>Accept-Language</code> header. Reset on each request. > */ > protected Locale locale; > > /** > * The bundle for this request. > */ > private ResourceBundle bundle; > > /** > * The name of the bundle for this tool to use. > */ > private String bundleName; > > /** > * Creates a new instance. Used by <code>PullService</code>. > */ > public LocalizationTool() > { > locale = null; > bundle = null; > bundleName = null; > } > > /** > * <p>Performs text lookups for localization.</p> > * > * <p>Assuming there is a instance of this class with a HTTP > * request set in your template's context named <code>l10n</code>, > * the VTL <code>$l10n.HELLO</code> would render to > * <code>hello</code> for English requests and <code>hola</code> > * in Spanish (depending on the value of the HTTP request's > * <code>Accept-Language</code> header).</p> > * > * @param key The identifier for the localized text to retrieve. > * @return The localized text. > */ > public String get(String key) > { > try > { > //Log.debug("service","Localization tool >:Bundle["+bundleName+"]=["+bundle+"] used for key["+key+"] and locale["+locale+"]"); > return bundle.getString(key); > } > catch (MissingResourceException noKey) > { > Log.warn("service","Missing Resource",noKey); > return null; > } > } > > /** > * The return value of this method is used to set the name of the > * bundle used by this tool. Useful as a hook for using a > * different bundle than specifed in your > * <code>LocalizationService</code> configuration. > * > * @param data The inputs passed from {@link #init(Object)}. > * (ignored by this implementation). > */ > protected String getBundleName(Object data) > { > return Localization.getDefaultBundleName(); > } > > > /** > * Tool initialization > * <BR> > * GLOBAL > * <blockquote> > * Locale comes from TR.conf > * </blockquote> > * <BR> > * REQUEST > * <blockquote> > * Check if user.locale is in Session, otherwise build a locale from HTTP >HEADERS > * </blockquote> > * > */ > public final void init(Object data) > { > if(data == null) > { > Log.debug("service","Localization tool initializing with scope GLOBAL"); > > //bundle default em TR.conf since no request data is available > bundle = Localization.getBundle(Localization.getDefaultBundleName()); > } > > if(data instanceof User) > { > Log.debug("service","Localization tool initializing with scope SESSION"); > // Pull necessary information out of Session. > } > > if (data instanceof RunData) > { > Log.debug("service","Localization tool initializing with scope REQUEST"); > > // Pull necessary information out of RunData while we have a reference >to it. > locale = LocalizationHelper.getLocale((RunData)data); > bundleName = getBundleName(data); > > //bundle acoording to request information > bundle = Localization.getBundle(bundleName, locale); > Log.debug("service","Localization tool initialized with >bundleName["+bundleName+"] locale["+locale+"]"); > } > } > > /** > * No-op. > */ > public void refresh() > { > Log.debug("service","Localization tool refreshing..."); > } > > /** > * helper method to be used inside templates > */ > public String getUserLocale() > { > return LocalizationHelper.USER_LOCALE; > } > > } > > ---- > > -- > To unsubscribe, e-mail: <mailto:[EMAIL PROTECTED]> > For additional commands, e-mail: <mailto:[EMAIL PROTECTED]> -- Leandro Rodrigo Saad Cruz IT - Inter Business Tecnologia e Servicos (IB) http://www.ibnetwork.com.br -- To unsubscribe, e-mail: <mailto:[EMAIL PROTECTED]> For additional commands, e-mail: <mailto:[EMAIL PROTECTED]>
