package org.argeo.slc.client.ui.dist.controllers;
   
   import javax.jcr.RepositoryFactory;
   
   import org.argeo.eclipse.ui.TreeParent;
   import org.argeo.slc.client.ui.dist.model.RepoElem;
   import org.eclipse.jface.viewers.ITreeContentProvider;
   import org.eclipse.jface.viewers.Viewer;
   
  /**
   * Enable browsing in local public slc distribution repositories. For the time
   * being, it supports only one repository at a time. Repository factory must be
   * injected
   */
  public class AnonymousDistTreeContentProvider implements ITreeContentProvider {
  	private static final long serialVersionUID = -4149180221319229128L;
  
  	// List<RepoElem> repositories = new ArrayList<RepoElem>();
  	private RepoElem publicRepo;
  
  	private RepositoryFactory repositoryFactory;
  
  	/**
  	 * @param input
  	 *            the URI to the public repository to browse
  	 */
  	public Object[] getElements(Object input) {
  		String uri = (String) input;
  		publicRepo = new RepoElem(repositoryFactory, uri,
  				"Argeo Public Repository");
  		// force connection and creation of the children UI object
  		publicRepo.login();
  		return publicRepo.getChildren();
  	}
  
  	public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
  	}
  
  	// @Override
  	public Object[] getChildren(Object parentElement) {
  		if (parentElement instanceof TreeParent)
  			return ((TreeParent) parentElement).getChildren();
  		else
  			return null;
  	}
  
  	// @Override
  	public Object getParent(Object element) {
  		if (element instanceof TreeParent)
  			return ((TreeParent) element).getParent();
  		return null;
  	}
  
  	// @Override
  	public boolean hasChildren(Object element) {
  		if (element instanceof TreeParent)
  			return ((TreeParent) element).hasChildren();
  		else
  			return false;
  	}
  
  	public void dispose() {
  		publicRepo.dispose();
  	}
  
  	/*
  	 * DEPENDENCY INJECTION
  	 */
  	public void setRepositoryFactory(RepositoryFactory repositoryFactory) {
  		this.repositoryFactory = repositoryFactory;
  	}
  }