/*
* 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.configuration.CmsParameterConfiguration;
import org.opencms.file.CmsResource;
import org.opencms.file.CmsResource.CmsResourceDeleteMode;
import org.opencms.file.CmsResourceFilter;
import org.opencms.jsp.CmsJspActionElement;
import org.opencms.main.CmsException;
import org.opencms.main.CmsLog;
import org.opencms.main.OpenCms;
import org.opencms.security.CmsPermissionSet;
import org.opencms.security.CmsRole;
import org.opencms.util.CmsStringUtil;
import org.opencms.workplace.CmsDialogSelector;
import org.opencms.workplace.CmsMultiDialog;
import org.opencms.workplace.CmsWorkplaceSettings;
import org.opencms.workplace.I_CmsDialogHandler;
import org.opencms.workplace.list.CmsListExplorerColumn;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.jsp.JspException;
import javax.servlet.jsp.PageContext;
import org.apache.commons.logging.Log;
/**
* Provides methods for the delete resources dialog.<p>
*
* The following files use this class:
* <ul>
* <li>/commons/delete_standard.jsp
* </ul>
* <p>
*
* @since 6.0.0
*/
public class CmsDelete extends CmsMultiDialog implements I_CmsDialogHandler {
/** Value for the action: delete the resource. */
public static final int ACTION_DELETE = 100;
/** The dialog type. */
public static final String DIALOG_TYPE = "delete";
/** The log object for this class. */
public static final Log LOG = CmsLog.getLog(CmsDelete.class);
/** Request parameter name for the deletesiblings parameter. */
public static final String PARAM_DELETE_SIBLINGS = "deletesiblings";
/** The delete dialog URI. */
public static final String URI_DELETE_DIALOG = PATH_DIALOGS + "delete_standard.jsp";
/** The delete siblings parameter value. */
private String m_deleteSiblings;
/**
* Default constructor needed for dialog handler implementation.<p>
*/
public CmsDelete() {
super(null);
}
/**
* Public constructor with JSP action element.<p>
*
* @param jsp an initialized JSP action element
*/
public CmsDelete(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 CmsDelete(PageContext context, HttpServletRequest req, HttpServletResponse res) {
this(new CmsJspActionElement(context, req, res));
}
/**
* Performs the delete action, will be called by the JSP page.<p>
*
* @throws JspException if problems including sub-elements occur
*/
public void actionDelete() throws JspException {
// save initialized instance of this class in request attribute for included sub-elements
getJsp().getRequest().setAttribute(SESSION_WORKPLACE_CLASS, this);
try {
boolean isFolder = false;
if (!isMultiOperation()) {
isFolder = getCms().readResource(getParamResource(), CmsResourceFilter.ALL).isFolder();
}
if (performDialogOperation()) {
// if no exception is caused and "true" is returned delete operation was successful
if (isMultiOperation() || isFolder) {
// set request attribute to reload the explorer tree view
List folderList = new ArrayList(1);
folderList.add(CmsResource.getParentFolder((String)getResourceList().get(0)));
getJsp().getRequest().setAttribute(REQUEST_ATTRIBUTE_RELOADTREE, folderList);
}
actionCloseDialog();
} else {
// "false" returned, display "please wait" screen
getJsp().include(FILE_DIALOG_SCREEN_WAIT);
}
} catch (Throwable e) {
// prepare common message part
includeErrorpage(this, e);
}
}
/**
* @see org.opencms.configuration.I_CmsConfigurationParameterHandler#addConfigurationParameter(java.lang.String, java.lang.String)
*/
public void addConfigurationParameter(String paramName, String paramValue) {
// not implemented yet
}
/**
* Returns the html for the confirmation message.<p>
*
* @return the html for the confirmation message
*/
public String buildConfirmation() {
StringBuffer result = new StringBuffer(512);
boolean isFolder = false;
if (!isMultiOperation()) {
try {
isFolder = getCms().readResource(getParamResource(), CmsResourceFilter.ALL).isFolder();
} catch (CmsException e) {
// ignore
}
}
result.append("<div id='conf-msg'>\n");
if (isMultiOperation() || isFolder || (hasSiblings() && hasCorrectLockstate())) {
result.append(key(Messages.GUI_DELETE_MULTI_CONFIRMATION_0));
} else {
result.append(key(Messages.GUI_DELETE_CONFIRMATION_0));
}
result.append("\n</div>\n");
return result.toString();
}
/**
* Returns the html for the "delete siblings" options when deleting a a resource with siblings.<p>
*
* @return the html for the "delete siblings" options
*/
public String buildDeleteSiblings() {
StringBuffer result = new StringBuffer(512);
if (isMultiOperation() || (hasSiblings() && hasCorrectLockstate())) {
// show only for multi resource operation or if resource has siblings and correct lock state
CmsResourceDeleteMode defaultMode = Boolean.valueOf(getParamDeleteSiblings()).booleanValue()
? CmsResource.DELETE_REMOVE_SIBLINGS
: CmsResource.DELETE_PRESERVE_SIBLINGS;
if (!isMultiOperation()) {
result.append(key(Messages.GUI_DELETE_WARNING_SIBLINGS_0));
result.append("<p>");
}
result.append("<input type=\"radio\" name=\"");
result.append(PARAM_DELETE_SIBLINGS);
result.append("radio\" value=\"false\"");
if (defaultMode == CmsResource.DELETE_PRESERVE_SIBLINGS) {
result.append(" checked=\"checked\"");
}
result.append(" onclick='reloadDialog(false);'> ");
result.append(key(Messages.GUI_DELETE_PRESERVE_SIBLINGS_0));
result.append("<br>");
result.append("<input type=\"radio\" name=\"");
result.append(PARAM_DELETE_SIBLINGS);
result.append("radio\" value=\"true\"");
if (defaultMode == CmsResource.DELETE_REMOVE_SIBLINGS) {
result.append(" checked=\"checked\"");
}
result.append(" onclick='reloadDialog(true);'> ");
result.append(key(Messages.GUI_DELETE_ALL_SIBLINGS_0));
result.append("<p>");
}
return result.toString();
}
/**
* Returns html code for the possible broken relations.<p>
*
* @return html code for the possible broken relations
*
* @throws JspException if dialog actions fail
* @throws IOException in case of errros forwarding to the required result page
* @throws ServletException in case of errros forwarding to the required result page
*/
public String buildReport() throws JspException, ServletException, IOException {
CmsDeleteBrokenRelationsList list = new CmsDeleteBrokenRelationsList(
getJsp(),
getResourceList(),
Boolean.valueOf(getParamDeleteSiblings()).booleanValue());
list.actionDialog();
StringBuffer result = new StringBuffer(512);
list.getList().setBoxed(false);
result.append("<input type='hidden' name='result' value='");
result.append(list.getList().getTotalSize()).append("'>\n");
result.append(CmsListExplorerColumn.getExplorerStyleDef());
result.append("<div style='height:150px; overflow: auto;'>\n");
result.append(list.getList().listHtml());
result.append("</div>\n");
return result.toString();
}
/**
* @see org.opencms.configuration.I_CmsConfigurationParameterHandler#getConfiguration()
*/
public CmsParameterConfiguration getConfiguration() {
return CmsParameterConfiguration.EMPTY_PARAMETERS;
}
/**
* @see org.opencms.workplace.I_CmsDialogHandler#getDialogHandler()
*/
public String getDialogHandler() {
return CmsDialogSelector.DIALOG_DELETE;
}
/**
* @see org.opencms.workplace.I_CmsDialogHandler#getDialogUri(java.lang.String, CmsJspActionElement)
*/
public String getDialogUri(String resource, CmsJspActionElement jsp) {
return URI_DELETE_DIALOG;
}
/**
* Returns the value of the boolean option to delete siblings.<p>
*
* @return the value of the boolean option to delete siblings as a lower case string
*/
public String getParamDeleteSiblings() {
return m_deleteSiblings;
}
/**
* @see org.opencms.configuration.I_CmsConfigurationParameterHandler#initConfiguration()
*/
public void initConfiguration() {
// not implemented yet
}
/**
* Returns <code>true</code> if the current user is allowed
* to delete the selected resources.<p>
*
* @return <code>true</code> if the current user is allowed
* to delete the selected resources
*/
public boolean isCanDelete() {
return OpenCms.getWorkplaceManager().getDefaultUserSettings().isAllowBrokenRelations()
|| OpenCms.getRoleManager().hasRole(getCms(), CmsRole.VFS_MANAGER);
}
/**
* Sets the value of the boolean option to delete siblings.<p>
*
* @param value the value of the boolean option to delete siblings
*/
public void setParamDeleteSiblings(String value) {
m_deleteSiblings = value;
}
/**
* @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);
if (CmsStringUtil.isEmptyOrWhitespaceOnly(getParamDeleteSiblings())) {
setParamDeleteSiblings(Boolean.toString(getSettings().getUserSettings().getDialogDeleteFileMode() == CmsResource.DELETE_REMOVE_SIBLINGS));
}
// check the required permissions to delete 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_DELETE);
} else if (DIALOG_LOCKS_CONFIRMED.equals(getParamAction())) {
setAction(ACTION_LOCKS_CONFIRMED);
} else if (DIALOG_WAIT.equals(getParamAction())) {
setAction(ACTION_WAIT);
} else if (DIALOG_CANCEL.equals(getParamAction())) {
setAction(ACTION_CANCEL);
} else {
setAction(ACTION_DEFAULT);
// build title for delete dialog
setDialogTitle(Messages.GUI_DELETE_RESOURCE_1, Messages.GUI_DELETE_MULTI_2);
}
}
/**
* Performs the resource deletion.<p>
*
* @return true, if the resource(s) was/were deleted, otherwise false
* @throws CmsException if deletion is not successful
*/
protected boolean performDialogOperation() throws CmsException {
// check if the current resource is a folder for single operation
boolean isFolder = isOperationOnFolder();
// on folder deletion or multi operation display "please wait" screen, not for simple file deletion
if ((isMultiOperation() || isFolder) && !DIALOG_WAIT.equals(getParamAction())) {
// return false, this will trigger the "please wait" screen
return false;
}
// determine the correct delete option
CmsResourceDeleteMode deleteOption = Boolean.valueOf(getParamDeleteSiblings()).booleanValue()
? CmsResource.DELETE_REMOVE_SIBLINGS
: CmsResource.DELETE_PRESERVE_SIBLINGS;
Iterator i = getResourceList().iterator();
// iterate the resources to delete
while (i.hasNext()) {
String resName = (String)i.next();
try {
performSingleDeleteOperation(resName, deleteOption);
} 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_DELETE_MULTI_0);
return true;
}
/**
* Performs the delete operation for a single VFS resource.<p>
*
* @param resource the resource VFS path
* @param deleteOption the delete option for sibling deletion
* @throws CmsException if deleting the resource fails
*/
protected void performSingleDeleteOperation(String resource, CmsResourceDeleteMode deleteOption)
throws CmsException {
// lock resource if autolock is enabled
checkLock(resource);
// delete the resource
getCms().deleteResource(resource, deleteOption);
}
}