/*
  Copyright (C) 2006 Helge Hess

  This file is part of JOPE.

  JOPE is free software; you can redistribute it and/or modify it under
  the terms of the GNU Lesser General Public License as published by the
  Free Software Foundation; either version 2, or (at your option) any
  later version.

  JOPE is distributed in the hope that it will be useful, but WITHOUT ANY
  WARRANTY; without even the implied warranty of MERCHANTABILITY or
  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
  License for more details.

  You should have received a copy of the GNU Lesser General Public
  License along with JOPE; see the file COPYING.  If not, write to the
  Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
  02111-1307, USA.
*/

package org.opengroupware.jope.appserver.core;

/*
 * WOComponentFault
 * 
 * This class is used for child components which where not accessed yet. Its
 * required to avoid cycles in the template.
 */
public class WOComponentFault extends WOComponent {
  
  protected String cfName = null;

  public WOComponentFault() {
  }
  
  /* accessors */
  
  public void setName(String _name) {
    this.cfName = _name;
  }
  public String name() {
    return this.cfName;
  }
  
  /* resolve fault */
  
  public WOComponent resolveWithParent(WOComponent _parent) {
    if (compLog.isDebugEnabled())
      compLog.debug("resolving fault for: " + this.cfName);
    
    WOResourceManager rm;
    WOContext ctx = this.context();
    
    if ((rm = this.resourceManager()) == null)
      rm = _parent != null ? _parent.resourceManager() : null;
    if (rm == null) {
      compLog.error("got no resource manager ...");
      return null;
    }
    
    /* page */
    
    WOComponent replacement = rm.pageWithName(this.name(), ctx);
    if (replacement == null) {
      compLog.error("could not resolve fault for component: " +
                         this.name());
      return null;
    }
    
    replacement.setBindings(this.wocBindings);
    replacement.setParent(_parent);
    if (ctx != null)
      replacement.ensureAwakeInContext(ctx);
    
    return replacement;
  }
  
  /* responder */
  
  @Override
  public void takeValuesFromRequest(WORequest _rq, WOContext _ctx) {
    compLog.error("called takeValues on WOComponentFault!");
  }
  
  @Override
  public Object invokeAction(WORequest _rq, WOContext _ctx) {
    compLog.error("called invokeAction on WOComponentFault!");
    return null;
  }
  
  @Override
  public void appendToResponse(WOResponse _r, WOContext _ctx) {
    compLog.error("called appendToResponse on WOComponentFault!");
    _r.appendContentHTMLString("[ERROR: unresolved component fault]");
  }
  
  @Override
  public void walkTemplate(WOElementWalker _walker, WOContext _ctx) {
    compLog.error("called walkTemplate on WOComponentFault!");
  }
}