/**
* OLAT - Online Learning and Training<br>
* http://www.olat.org
* <p>
* Licensed under the Apache License, Version 2.0 (the "License"); <br>
* you may not use this file except in compliance with the License.<br>
* You may obtain a copy of the License at
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
* Unless required by applicable law or agreed to in writing,<br>
* software distributed under the License is distributed on an "AS IS" BASIS, <br>
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. <br>
* See the License for the specific language governing permissions and <br>
* limitations under the License.
* <p>
* Copyright (c) frentix GmbH<br>
* http://www.frentix.com<br>
* <p>
*/
package org.olat.core.commons.modules.bc.version;
import java.text.DateFormat;
import java.util.ArrayList;
import java.util.BitSet;
import java.util.Calendar;
import java.util.List;
import java.util.Locale;
import org.olat.core.commons.modules.bc.commands.FolderCommand;
import org.olat.core.commons.modules.bc.commands.FolderCommandStatus;
import org.olat.core.gui.UserRequest;
import org.olat.core.gui.components.Component;
import org.olat.core.gui.components.table.BaseTableDataModelWithoutFilter;
import org.olat.core.gui.components.table.DefaultColumnDescriptor;
import org.olat.core.gui.components.table.StaticColumnDescriptor;
import org.olat.core.gui.components.table.TableController;
import org.olat.core.gui.components.table.TableDataModel;
import org.olat.core.gui.components.table.TableEvent;
import org.olat.core.gui.components.table.TableGuiConfiguration;
import org.olat.core.gui.components.table.TableMultiSelectEvent;
import org.olat.core.gui.components.velocity.VelocityContainer;
import org.olat.core.gui.control.Controller;
import org.olat.core.gui.control.Event;
import org.olat.core.gui.control.WindowControl;
import org.olat.core.gui.control.controller.BasicController;
import org.olat.core.gui.control.generic.modal.DialogBoxController;
import org.olat.core.gui.control.generic.modal.DialogBoxUIFactory;
import org.olat.core.gui.media.MediaResource;
import org.olat.core.gui.translator.Translator;
import org.olat.core.util.vfs.VFSContainer;
import org.olat.core.util.vfs.VFSManager;
import org.olat.core.util.vfs.VFSRevisionMediaResource;
import org.olat.core.util.vfs.callbacks.VFSSecurityCallback;
import org.olat.core.util.vfs.version.VFSRevision;
import org.olat.core.util.vfs.version.Versions;
import org.olat.core.util.vfs.version.VersionsManager;
/**
*
* Description:<br>
* This controller shows the list of deleted files in a container.<br>
* Events:
* <ul>
* <li>FOLDERCOMMAND_FINISHED</li>
* </ul>
* <P>
* Initial Date: 15 sept. 2009 <br>
*
* @author srosse
*/
public class DeletedFileListController extends BasicController {
private static final String CMD_DOWNLOAD = "download";
private static final String CMD_RESTORE = "restore";
private static final String CMD_DELETE = "delete";
private static final String CMD_CANCEL = "cancel";
private int status = FolderCommandStatus.STATUS_SUCCESS;
private final VFSContainer container;
private final List<Versions> deletedFiles;
private VelocityContainer mainVC;
private TableController deletedFilesListTableCtr;
private DialogBoxController dialogCtr;
public DeletedFileListController(UserRequest ureq, WindowControl wControl, VFSContainer container) {
super(ureq, wControl);
this.container = container;
deletedFiles = VersionsManager.getInstance().getDeletedFiles(container);
TableGuiConfiguration summaryTableConfig = new TableGuiConfiguration();
summaryTableConfig.setDownloadOffered(false);
summaryTableConfig.setTableEmptyMessage(getTranslator().translate("version.noDeletedFiles"));
deletedFilesListTableCtr = new TableController(summaryTableConfig, ureq, getWindowControl(), getTranslator(), null);
deletedFilesListTableCtr.addColumnDescriptor(new DefaultColumnDescriptor("version.name", 0, null, ureq.getLocale()));
deletedFilesListTableCtr.addColumnDescriptor(new DefaultColumnDescriptor("version.author", 1, null, ureq.getLocale()));
deletedFilesListTableCtr.addColumnDescriptor(new DefaultColumnDescriptor("version.deletedBy", 2, null, ureq.getLocale()));
deletedFilesListTableCtr.addColumnDescriptor(new DefaultColumnDescriptor("version.date", 3, null, ureq.getLocale()));
deletedFilesListTableCtr.addColumnDescriptor(new StaticColumnDescriptor(CMD_DOWNLOAD, "version.download", getTranslator().translate(
"version.download")));
VFSSecurityCallback secCallback = VFSManager.findInheritedSecurityCallback(container);
if (secCallback != null) {
if (secCallback.canDeleteRevisionsPermanently()) {
deletedFilesListTableCtr.addMultiSelectAction("delete", CMD_DELETE);
}
if (secCallback.canWrite()) {
deletedFilesListTableCtr.addMultiSelectAction("version.restore", CMD_RESTORE);
}
}
deletedFilesListTableCtr.addMultiSelectAction("cancel", CMD_CANCEL);
deletedFilesListTableCtr.setMultiSelect(true);
deletedFilesListTableCtr.setTableDataModel(new DeletedFileListDataModel(deletedFiles, ureq.getLocale()));
listenTo(deletedFilesListTableCtr);
mainVC = createVelocityContainer("deleted_files");
mainVC.put("deletedFileList", deletedFilesListTableCtr.getInitialComponent());
putInitialPanel(mainVC);
}
@Override
protected void doDispose() {
//
}
public int getStatus() {
return status;
}
@Override
protected void event(UserRequest ureq, Component source, Event event) {
// nothing to track
}
@Override
protected void event(UserRequest ureq, Controller source, Event event) {
if (source == deletedFilesListTableCtr) {
if (event instanceof TableEvent) {
TableEvent tEvent = (TableEvent) event;
int row = tEvent.getRowId();
if (CMD_DOWNLOAD.equals(tEvent.getActionId())) {
VFSRevision version = getLastRevision(deletedFiles.get(row));
MediaResource resource = new VFSRevisionMediaResource(version, true);
ureq.getDispatchResult().setResultingMediaResource(resource);
} else if (CMD_RESTORE.equals(tEvent.getActionId())) {
VFSRevision version = getLastRevision(deletedFiles.get(row));
if (VersionsManager.getInstance().restore(container, version)) {
status = FolderCommandStatus.STATUS_SUCCESS;
fireEvent(ureq, FolderCommand.FOLDERCOMMAND_FINISHED);
} else {
status = FolderCommandStatus.STATUS_FAILED;
// ERROR
}
}
} else if (event instanceof TableMultiSelectEvent) {
TableMultiSelectEvent tEvent = (TableMultiSelectEvent) event;
if (CMD_CANCEL.equals(tEvent.getAction())) {
status = FolderCommandStatus.STATUS_CANCELED;
fireEvent(ureq, FolderCommand.FOLDERCOMMAND_FINISHED);
} else if (CMD_RESTORE.equals(tEvent.getAction())) {
List<VFSRevision> selectedRevisions = getSelectedRevisions(tEvent.getSelection());
boolean allOk = true;
for (VFSRevision revision : selectedRevisions) {
allOk &= VersionsManager.getInstance().restore(container, revision);
}
if (allOk) {
status = FolderCommandStatus.STATUS_SUCCESS;
fireEvent(ureq, FolderCommand.FOLDERCOMMAND_FINISHED);
} else {
status = FolderCommandStatus.STATUS_FAILED;
}
} else if (CMD_DELETE.equals(tEvent.getAction())) {
List<Versions> versionsToDelete = getSelectedVersions(tEvent.getSelection());
if (!versionsToDelete.isEmpty()) {
Translator trans = getTranslator();
String msg = trans.translate("version.del.confirm") + "<p>" + renderVersionsAsHtml(versionsToDelete) + "</p>";
// create dialog controller
dialogCtr = activateYesNoDialog(ureq, trans.translate("version.del.header"), msg, dialogCtr);
dialogCtr.setUserObject(versionsToDelete);
}
}
}
} else if (source == dialogCtr) {
if (DialogBoxUIFactory.isYesEvent(event)) {
List<Versions> versionsToDelete = (List<Versions>)dialogCtr.getUserObject();
VersionsManager.getInstance().deleteVersions(versionsToDelete);
status = FolderCommandStatus.STATUS_SUCCESS;
fireEvent(ureq, FolderCommand.FOLDERCOMMAND_FINISHED);
}
}
}
private String renderVersionsAsHtml(List<Versions> versions) {
StringBuilder sb = new StringBuilder();
sb.append("<ul>");
for (Versions version:versions) {
VFSRevision lastRevision = getLastRevision(version);
if (lastRevision != null) {
sb.append("<li>")
.append(lastRevision.getName())
.append("</li>");
}
}
sb.append("</ul>");
return sb.toString();
}
protected List<Versions> getSelectedVersions(BitSet objectMarkers) {
List<Versions> results = new ArrayList<Versions>();
for (int i = objectMarkers.nextSetBit(0); i >= 0; i = objectMarkers.nextSetBit(i + 1)) {
if (i >= 0 && i < deletedFiles.size()) {
results.add(deletedFiles.get(i));
}
}
return results;
}
protected List<VFSRevision> getSelectedRevisions(BitSet objectMarkers) {
List<VFSRevision> results = new ArrayList<VFSRevision>();
for (int i = objectMarkers.nextSetBit(0); i >= 0; i = objectMarkers.nextSetBit(i + 1)) {
if (i >= 0 && i < deletedFiles.size()) {
VFSRevision elem = getLastRevision(deletedFiles.get(i));
if (elem != null) {
results.add(elem);
}
}
}
return results;
}
protected VFSRevision getLastRevision(Versions versions) {
VFSRevision lastRevision = null;
if (!versions.getRevisions().isEmpty()) {
lastRevision = versions.getRevisions().get(versions.getRevisions().size() - 1);
}
return lastRevision;
}
public class DeletedFileListDataModel extends BaseTableDataModelWithoutFilter implements TableDataModel {
private final DateFormat format;
private final List<Versions> versionList;
private final Calendar cal = Calendar.getInstance();
public DeletedFileListDataModel(List<Versions> versionList, Locale locale) {
this.versionList = versionList;
format = DateFormat.getDateTimeInstance(DateFormat.SHORT, DateFormat.SHORT, locale);
}
public int getColumnCount() {
return 4;
}
public int getRowCount() {
return versionList.size();
}
public Object getValueAt(int row, int col) {
Versions versioned = versionList.get(row);
switch (col) {
case 0: {
VFSRevision lastRevision = getLastRevision(versioned);
return lastRevision == null ? null : lastRevision.getName();
}
case 1:
return versioned.getCreator();
case 2: {
VFSRevision lastRevision = getLastRevision(versioned);
return lastRevision == null ? null : lastRevision.getAuthor();
}
case 3: {
VFSRevision lastRevision = getLastRevision(versioned);
if (lastRevision == null) return null;
cal.setTimeInMillis(lastRevision.getLastModified());
return format.format(cal.getTime());
}
default:
return "";
}
}
}
}