package org.jboss.seam.faces;
import static org.jboss.seam.annotations.Install.BUILT_IN;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Set;
import java.util.TreeSet;
import javax.faces.model.SelectItem;
import org.jboss.seam.ScopeType;
import org.jboss.seam.annotations.Create;
import org.jboss.seam.annotations.Install;
import org.jboss.seam.annotations.Name;
import org.jboss.seam.annotations.Scope;
import org.jboss.seam.annotations.intercept.BypassInterceptors;
import org.jboss.seam.core.ConversationEntries;
import org.jboss.seam.core.ConversationEntry;
import org.jboss.seam.core.Manager;
import org.jboss.seam.web.Session;
/**
* Support for the conversation switcher drop-down menu.
*
* @author Gavin King
*/
@Scope(ScopeType.PAGE)
@Name("org.jboss.seam.faces.switcher")
@Install(precedence=BUILT_IN, classDependencies="javax.faces.context.FacesContext")
@BypassInterceptors
public class Switcher implements Serializable
{
private static final long serialVersionUID = -6403911073853051938L;
private List<SelectItem> selectItems;
private String conversationIdOrOutcome;
private String resultingConversationIdOrOutcome;
@Create
public void createSelectItems()
{
ConversationEntries conversationEntries = ConversationEntries.getInstance();
if (conversationEntries==null)
{
selectItems = Collections.EMPTY_LIST;
}
else
{
Set<ConversationEntry> orderedEntries = new TreeSet<ConversationEntry>();
orderedEntries.addAll( conversationEntries.getConversationEntries() );
selectItems = new ArrayList<SelectItem>( conversationEntries.size() );
for ( ConversationEntry entry: orderedEntries )
{
if ( entry.isDisplayable() && !Session.instance().isInvalid() )
{
selectItems.add( new SelectItem( entry.getId(), entry.getDescription() ) );
}
}
}
}
public List<SelectItem> getSelectItems()
{
return selectItems;
}
private String getLongRunningConversationId()
{
Manager manager = Manager.instance();
if ( manager.isLongRunningConversation() )
{
return manager.getCurrentConversationId();
}
else if ( manager.isNestedConversation() )
{
return manager.getParentConversationId();
}
else
{
//TODO: is there any way to set it to the current outcome, instead of null?
return null;
}
}
public String getConversationIdOrOutcome()
{
return resultingConversationIdOrOutcome==null ?
getLongRunningConversationId() :
resultingConversationIdOrOutcome;
}
public void setConversationIdOrOutcome(String selectedId)
{
this.conversationIdOrOutcome = selectedId;
}
public String select()
{
boolean isOutcome = conversationIdOrOutcome==null ||
(!Character.isDigit(conversationIdOrOutcome.charAt(0)) && conversationIdOrOutcome.indexOf(':') < 0);
String actualOutcome;
if (isOutcome)
{
resultingConversationIdOrOutcome = conversationIdOrOutcome;
actualOutcome = conversationIdOrOutcome;
}
else
{
ConversationEntry ce = ConversationEntries.instance().getConversationEntry(conversationIdOrOutcome);
if (ce!=null)
{
resultingConversationIdOrOutcome = ce.getId();
ce.redirect();
}
actualOutcome = null;
}
return actualOutcome;
}
}