/*
 * Copyright (C) 2007 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.jsapp;

import org.mozilla.javascript.Context;
import org.mozilla.javascript.Scriptable;
import org.opengroupware.jope.appserver.core.WOContext;

/**
 * JSContextAdapter
 * <p>
 * Wraps a WOContext with the extra-vars functionality (put JS variables into
 * the extravars dictionary).
 * 
 * <p>
 * This adapter exposes some WOContext methods as properties, namely:
 * <ul>
 *   <li>application
 *   <li>session
 *   <li>component
 *   <li>log (component.log)
 *   <li>hasSession
 * </ul>
 */
public class JSContextAdapter extends JSExtraVarAdapter {
  private static final long serialVersionUID = 1L;

  public JSContextAdapter() {
  }

  public JSContextAdapter(Scriptable _scope, Object _javaObject, Class _type){
    super(_scope, _javaObject, _type);
  }

  public JSContextAdapter
    (Scriptable _scope, Object _javaObject, Class _type, boolean _isAdapter)
  {
    super(_scope, _javaObject, _type, _isAdapter);
  }
  
  /* accessors */

  public String getClassName() {
    return "JSContextAdapter"; 
  }

  
  /* remap some things to properties */

  @Override
  public boolean has(String _name, Scriptable _start) {
    int  len = _name.length();
    char c0  = len > 0 ? _name.charAt(0) : 0;
    
    switch (c0) {
      case 'a':
        if (len == 11 && "application".equals(_name)) return true;
        break;
      case 'c':
        if (len == 9 && "component".equals(_name)) return true;
        break;
      case 'h':
        if (len == 10 && "hasSession".equals(_name)) return true;
        break;
      case 'l':
        if (len == 3 && "log".equals(_name)) return true;
        break;
      case 'p':
        if (len == 4 && "page".equals(_name)) return true;
        break;
      case 's':
        if (len == 7 && "session".equals(_name)) return true;
        break;
    }
    
    return super.has(_name, _start);
  }
  
  @Override
  public Object get(String _name, Scriptable _start) {
    Object dp  = Scriptable.NOT_FOUND;
    int    len = _name.length();
    char   c0  = len > 0 ? _name.charAt(0) : 0;
    
    switch (c0) {
      case 'a':
        if (len == 11 && "application".equals(_name))
          dp = ((WOContext)this.javaObject).application();
        break;
      case 'c':
        if (len == 0 && "component".equals(_name))
          dp = ((WOContext)this.javaObject).component();
        break;
      case 'h':
        if (len == 10 && "hasSession".equals(_name))
          dp = ((WOContext)this.javaObject).hasSession();
        break;
      case 'l':
        if (len == 3 && "log".equals(_name))
          dp = ((WOContext)this.javaObject).component().log();
        break;
      case 'p':
        if (len == 4 && "page".equals(_name))
          dp = ((WOContext)this.javaObject).page();
        break;
      case 's':
        if (len == 7 && "session".equals(_name))
          dp = ((WOContext)this.javaObject).session();
        break;
    }
    
    if (dp != Scriptable.NOT_FOUND) {
      Context cx = Context.getCurrentContext();
    
      return cx.getWrapFactory().wrap(cx,
          this /* scope? */,
          dp   /* Java object to be wrapped for JS */,
          null /* static type? */);
    }
    
    return super.get(_name, _start);
  }  
}