/*
* This library is part of OpenCms -
* the Open Source Content Management System
*
* Copyright (c) Alkacon Software GmbH (http://www.alkacon.com)
*
* This library 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 2.1 of the License, or (at your option) any later version.
*
* This library 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.
*
* For further information about Alkacon Software GmbH, please see the
* company website: http://www.alkacon.com
*
* For further information about OpenCms, please see the
* project website: http://www.opencms.org
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package org.opencms.workplace.commons;
import org.opencms.jsp.CmsJspActionElement;
import org.opencms.main.CmsException;
import org.opencms.security.CmsPermissionSet;
import org.opencms.workplace.CmsMultiDialog;
import org.opencms.workplace.CmsWorkplaceSettings;
import java.util.Iterator;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.jsp.JspException;
import javax.servlet.jsp.PageContext;
/**
* Provides methods for the undelete resources dialog.<p>
*
* The following files use this class:
* <ul>
* <li>/commons/undelete.jsp
* </ul>
* <p>
*
* @since 6.0.0
*/
public class CmsUndelete extends CmsMultiDialog {
/** Value for the action: undelete resource. */
public static final int ACTION_UNDELETE = 100;
/** The dialog type. */
public static final String DIALOG_TYPE = "undelete";
/**
* Public constructor with JSP action element.<p>
*
* @param jsp an initialized JSP action element
*/
public CmsUndelete(CmsJspActionElement jsp) {
super(jsp);
}
/**
* Public constructor with JSP variables.<p>
*
* @param context the JSP page context
* @param req the JSP request
* @param res the JSP response
*/
public CmsUndelete(PageContext context, HttpServletRequest req, HttpServletResponse res) {
this(new CmsJspActionElement(context, req, res));
}
/**
* Performs the undelete action, will be called by the JSP page.<p>
*
* @throws JspException if problems including sub-elements occur
*/
public void actionUndelete() throws JspException {
// save initialized instance of this class in request attribute for included sub-elements
getJsp().getRequest().setAttribute(SESSION_WORKPLACE_CLASS, this);
try {
if (performDialogOperation()) {
// if no exception is caused and "true" is returned delete operation was successful
actionCloseDialog();
} else {
// "false" returned, display "please wait" screen
getJsp().include(FILE_DIALOG_SCREEN_WAIT);
}
} catch (Throwable e) {
// error during deletion, show error dialog
includeErrorpage(this, e);
}
}
/**
* Returns the HTML for the localized undelete confirmation message depending on single or multi operation.<p>
*
* @return the HTML for the localized undelete confirmation message
*/
public String buildConfirmationMessage() {
if (isMultiOperation()) {
return key(Messages.GUI_UNDELETE_MULTI_CONFIRMATION_0);
} else {
return key(Messages.GUI_UNDELETE_CONFIRMATION_0);
}
}
/**
* @see org.opencms.workplace.CmsWorkplace#initWorkplaceRequestValues(org.opencms.workplace.CmsWorkplaceSettings, javax.servlet.http.HttpServletRequest)
*/
protected void initWorkplaceRequestValues(CmsWorkplaceSettings settings, HttpServletRequest request) {
// fill the parameter values in the get/set methods
fillParamValues(request);
// check the required permissions to undelete the resource
if (!checkResourcePermissions(CmsPermissionSet.ACCESS_WRITE, false)) {
// no write permissions for the resource, set cancel action to close dialog
setParamAction(DIALOG_CANCEL);
}
// set the dialog type
setParamDialogtype(DIALOG_TYPE);
// set the action for the JSP switch
if (DIALOG_TYPE.equals(getParamAction())) {
setAction(ACTION_UNDELETE);
} else if (DIALOG_WAIT.equals(getParamAction())) {
setAction(ACTION_WAIT);
} else if (DIALOG_CANCEL.equals(getParamAction())) {
setAction(ACTION_CANCEL);
} else if (DIALOG_LOCKS_CONFIRMED.equals(getParamAction())) {
setAction(ACTION_LOCKS_CONFIRMED);
} else {
setAction(ACTION_DEFAULT);
// build title for delete dialog
setDialogTitle(Messages.GUI_UNDELETE_RESOURCE_1, Messages.GUI_UNDELETE_MULTI_2);
}
}
/**
* Performs the resource undeletion.<p>
*
* @return true, if the undelete operation is successful, otherwise false
* @throws CmsException if undeletion is not successful
*/
protected boolean performDialogOperation() throws CmsException {
// check if the current resource is a folder for single operation
boolean isFolder = isOperationOnFolder();
// on folder undelete or multi operation display "please wait" screen, not for simple file undeletion
if ((isMultiOperation() || isFolder) && !DIALOG_WAIT.equals(getParamAction())) {
// return false, this will trigger the "please wait" screen
return false;
}
Iterator i = getResourceList().iterator();
// iterate the resources to undelete
while (i.hasNext()) {
String resName = (String)i.next();
try {
// lock resource if autolock is enabled
checkLock(resName);
// undelete the resource
getCms().undeleteResource(resName, true);
} catch (CmsException e) {
if (isMultiOperation()) {
// collect exceptions to create a detailed output
addMultiOperationException(e);
} else {
// for single operation, throw the exception immediately
throw e;
}
}
}
// check if exceptions occurred
checkMultiOperationException(Messages.get(), Messages.ERR_UNDELETE_MULTI_0);
return true;
}
}