Package com.adito.navigation.actions

Source Code of com.adito.navigation.actions.ShowFileDownloadAction

        /*
*  Adito
*
*  Copyright (C) 2003-2006 3SP LTD. All Rights Reserved
*
*  This program is free software; you can redistribute it and/or
*  modify it under the terms of the GNU General Public License
*  as published by the Free Software Foundation; either version 2 of
*  the License, or (at your option) any later version.
*  This program 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 General Public License for more details.
*
*  You should have received a copy of the GNU General Public
*  License along with this program; if not, write to the Free Software
*  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
     
package com.adito.navigation.actions;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;

import com.adito.core.CoreUtil;
import com.adito.core.FileDownloadPageInterceptListener;
import com.adito.core.actions.DefaultAction;
import com.adito.navigation.forms.FileDownloadForm;
import com.adito.security.SessionInfo;

/**
* Action to show the file download screen.
*/
public class ShowFileDownloadAction extends DefaultAction {

    /* (non-Javadoc)
     * @see com.adito.core.actions.DefaultAction#execute(org.apache.struts.action.ActionMapping, org.apache.struts.action.ActionForm, javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
     */
    public ActionForward execute(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response)
                    throws Exception {       
        String id = request.getParameter("id");
        if(id == null) {
            throw new Exception("No download Id provided.");
        }
        FileDownloadPageInterceptListener l = (FileDownloadPageInterceptListener)
          CoreUtil.getPageInterceptListenerById(request.getSession(), FileDownloadPageInterceptListener.INTERCEPT_ID);
        if(l == null) {
            throw new Exception(
                "The requested download is no longer available. Some types of " +
                "content may only be downloaded once.");
        }
        ((FileDownloadForm)form).init(l.getDownload(Integer.parseInt(id)));
        return mapping.findForward("success");
    }

    /* (non-Javadoc)
     * @see com.adito.core.actions.CoreAction#getNavigationContext(org.apache.struts.action.ActionMapping, org.apache.struts.action.ActionForm, javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
     */
    public int getNavigationContext(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) {
        return SessionInfo.ALL_CONTEXTS;
    }

}
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