OO-3933: Option to confirm the data transfer to the external editor

src/main/java/org/olat/core/commons/editor/fileeditor/FileEditor.java

@@ -69,6 +69,11 @@ public class FileEditor implements DocEditor {
 		return translator.translate("editor.display.name");
 	}
 
+	@Override
+	public boolean isDataTransferConfirmationEnabled() {
+		return false;
+	}
+
 	@Override
 	public boolean isSupportingFormat(String suffix, Mode mode, boolean hasMeta) {
 		// Both the HTML editor and the text editor supports view and edit

src/main/java/org/olat/core/commons/services/doceditor/DocEditor.java

@@ -42,6 +42,8 @@ public interface DocEditor {
 	String getType();
 	
 	String getDisplayName(Locale locale);
+
+	boolean isDataTransferConfirmationEnabled();
 	
 	/**
 	 * Indicates whether the editor supports the format with that suffix in the appropriate mode.

src/main/java/org/olat/core/commons/services/doceditor/collabora/CollaboraEditor.java

@@ -65,6 +65,11 @@ public class CollaboraEditor implements DocEditor {
 		return translator.translate("editor.display.name");
 	}
 
+	@Override
+	public boolean isDataTransferConfirmationEnabled() {
+		return collaboraModule.isDataTransferConfirmationEnabled();
+	}
+
 	@Override
 	public boolean isSupportingFormat(String suffix, Mode mode, boolean hasMeta) {
 		return hasMeta && collaboraService.accepts(suffix, mode);

src/main/java/org/olat/core/commons/services/doceditor/collabora/CollaboraModule.java

@@ -38,11 +38,14 @@ public class CollaboraModule extends AbstractSpringModule implements ConfigOnOff
 
 	private static final String COLLABORA_ENABLED = "collabora.enabled";
 	private static final String COLLABORA_BASE_URL = "collabora.baseUrl";
+	private static final String COLLABORA_DATA_TRANSER_CONFIRMATION_ENABLED = "collabora.data.transfer.confirmation.enabled";
 	
 	@Value("${collabora.enabled:false}")
 	private boolean enabled;
 	@Value("${collabora.baseUrl}")
 	private String baseUrl;
+	@Value("${collabora.data.transfer.confirmation.enabled:false}")
+	private boolean dataTransferConfirmationEnabled;
 	
 	@Autowired
 	private CollaboraModule(CoordinatorManager coordinateManager) {
@@ -69,6 +72,11 @@ public class CollaboraModule extends AbstractSpringModule implements ConfigOnOff
 		if(StringHelper.containsNonWhitespace(baseUrlObj)) {
 			baseUrl = baseUrlObj;
 		}
+		
+		String dataTransferConfirmationEnabledObj = getStringPropertyValue(COLLABORA_DATA_TRANSER_CONFIRMATION_ENABLED, true);
+		if(StringHelper.containsNonWhitespace(dataTransferConfirmationEnabledObj)) {
+			dataTransferConfirmationEnabled = "true".equals(dataTransferConfirmationEnabledObj);
+		}
 	}
 
 	@Override
@@ -89,4 +97,13 @@ public class CollaboraModule extends AbstractSpringModule implements ConfigOnOff
 		this.baseUrl = baseUrl;
 		setStringProperty(COLLABORA_BASE_URL, baseUrl, true);
 	}
+
+	public boolean isDataTransferConfirmationEnabled() {
+		return dataTransferConfirmationEnabled;
+	}
+
+	public void setDataTransferConfirmationEnabled(boolean dataTransferConfirmationEnabled) {
+		this.dataTransferConfirmationEnabled = dataTransferConfirmationEnabled;
+		setStringProperty(COLLABORA_DATA_TRANSER_CONFIRMATION_ENABLED, Boolean.toString(dataTransferConfirmationEnabled), true);
+	}
 }

src/main/java/org/olat/core/commons/services/doceditor/collabora/ui/CollaboraAdminController.java

@@ -26,6 +26,7 @@ import static org.olat.core.gui.translator.TranslatorHelper.translateAll;
 import org.olat.core.commons.services.doceditor.collabora.CollaboraModule;
 import org.olat.core.commons.services.doceditor.collabora.CollaboraRefreshDiscoveryEvent;
 import org.olat.core.commons.services.doceditor.collabora.CollaboraService;
+import org.olat.core.commons.services.doceditor.ui.DocEditorController;
 import org.olat.core.commons.services.doceditor.wopi.Discovery;
 import org.olat.core.gui.UserRequest;
 import org.olat.core.gui.components.form.flexible.FormItem;
@@ -42,6 +43,7 @@ import org.olat.core.gui.control.WindowControl;
 import org.olat.core.helpers.Settings;
 import org.olat.core.logging.OLog;
 import org.olat.core.logging.Tracing;
+import org.olat.core.util.Util;
 import org.olat.core.util.coordinate.CoordinatorManager;
 import org.springframework.beans.factory.annotation.Autowired;
 
@@ -61,6 +63,7 @@ public class CollaboraAdminController extends FormBasicController {
 	private TextElement baseUrlEl;
 	private FormLink refreshDiscoveryLink;
 	private FormLink testLink;
+	private MultipleSelectionElement dataTransferConfirmationEnabledEl;
 
 	@Autowired
 	private CollaboraModule collaboraModule;
@@ -69,6 +72,7 @@ public class CollaboraAdminController extends FormBasicController {
 
 	public CollaboraAdminController(UserRequest ureq, WindowControl wControl) {
 		super(ureq, wControl);
+		setTranslator(Util.createPackageTranslator(DocEditorController.class, getLocale(), getTranslator()));
 		initForm(ureq);
 	}
 
@@ -87,6 +91,11 @@ public class CollaboraAdminController extends FormBasicController {
 		refreshDiscoveryLink = uifactory.addFormLink("admin.refresh.discovery", "admin.refresh.discovery", "admin.refresh.discovery.label", formLayout, Link.BUTTON);
 		refreshDiscoveryLink.setHelpTextKey("admin.refresh.discovery.help", null);
 		
+		dataTransferConfirmationEnabledEl = uifactory.addCheckboxesHorizontal(
+				"admin.data.transfer.confirmation.enabled", formLayout, ENABLED_KEYS,
+				translateAll(getTranslator(), ENABLED_KEYS));
+		dataTransferConfirmationEnabledEl.select(ENABLED_KEYS[0], collaboraModule.isDataTransferConfirmationEnabled());
+		
 		if (Settings.isDebuging()) {
 			testLink = uifactory.addFormLink("admin.test", formLayout, Link.BUTTON);
 		}
@@ -129,6 +138,9 @@ public class CollaboraAdminController extends FormBasicController {
 		if (urlChanged) {
 			doRefreshDiscovery();
 		}
+		
+		boolean dataTransferConfirmationEnabled = dataTransferConfirmationEnabledEl.isAtLeastSelected(1);
+		collaboraModule.setDataTransferConfirmationEnabled(dataTransferConfirmationEnabled);
 	}
 
 	@Override

src/main/java/org/olat/core/commons/services/doceditor/office365/Office365Editor.java

@@ -65,6 +65,11 @@ public class Office365Editor implements DocEditor {
 		return translator.translate("editor.display.name");
 	}
 
+	@Override
+	public boolean isDataTransferConfirmationEnabled() {
+		return office365Module.isDataTransferConfirmationEnabled();
+	}
+
 	@Override
 	public boolean isSupportingFormat(String suffix, Mode mode, boolean hasMeta) {
 		return hasMeta && office365Service.isSupportingFormat(suffix, mode);

src/main/java/org/olat/core/commons/services/doceditor/office365/Office365Module.java

 /**
- * <a href="http://www.openolat.org">
+* <a href="http://www.openolat.org">
  * OpenOLAT - Online Learning and Training</a><br>
  * <p>
  * Licensed under the Apache License, Version 2.0 (the "License"); <br>
@@ -38,11 +38,14 @@ public class Office365Module extends AbstractSpringModule implements ConfigOnOff
 
 	private static final String OFFICE365_ENABLED = "office365.enabled";
 	private static final String OFFICE365_BASE_URL = "office365.baseUrl";
+	private static final String OFFICE365_DATA_TRANSER_CONFIRMATION_ENABLED = "office365.data.transfer.confirmation.enabled";
 	
 	@Value("${office365.enabled:false}")
 	private boolean enabled;
 	@Value("${office365.baseUrl}")
 	private String baseUrl;
+	@Value("${office365.data.transfer.confirmation.enabled:false}")
+	private boolean dataTransferConfirmationEnabled;
 	
 	@Autowired
 	private Office365Module(CoordinatorManager coordinateManager) {
@@ -69,6 +72,11 @@ public class Office365Module extends AbstractSpringModule implements ConfigOnOff
 		if(StringHelper.containsNonWhitespace(baseUrlObj)) {
 			baseUrl = baseUrlObj;
 		}
+		
+		String dataTransferConfirmationEnabledObj = getStringPropertyValue(OFFICE365_DATA_TRANSER_CONFIRMATION_ENABLED, true);
+		if(StringHelper.containsNonWhitespace(dataTransferConfirmationEnabledObj)) {
+			dataTransferConfirmationEnabled = "true".equals(dataTransferConfirmationEnabledObj);
+		}
 	}
 
 	@Override
@@ -89,4 +97,13 @@ public class Office365Module extends AbstractSpringModule implements ConfigOnOff
 		this.baseUrl = baseUrl;
 		setStringProperty(OFFICE365_BASE_URL, baseUrl, true);
 	}
+
+	public boolean isDataTransferConfirmationEnabled() {
+		return dataTransferConfirmationEnabled;
+	}
+
+	public void setDataTransferConfirmationEnabled(boolean dataTransferConfirmationEnabled) {
+		this.dataTransferConfirmationEnabled = dataTransferConfirmationEnabled;
+		setStringProperty(OFFICE365_DATA_TRANSER_CONFIRMATION_ENABLED, Boolean.toString(dataTransferConfirmationEnabled), true);
+	}
 }

src/main/java/org/olat/core/commons/services/doceditor/office365/ui/Office365AdminController.java

@@ -25,6 +25,7 @@ import static org.olat.core.gui.translator.TranslatorHelper.translateAll;
 
 import org.olat.core.commons.services.doceditor.office365.Office365Module;
 import org.olat.core.commons.services.doceditor.office365.Office365RefreshDiscoveryEvent;
+import org.olat.core.commons.services.doceditor.ui.DocEditorController;
 import org.olat.core.gui.UserRequest;
 import org.olat.core.gui.components.form.flexible.FormItem;
 import org.olat.core.gui.components.form.flexible.FormItemContainer;
@@ -37,6 +38,7 @@ import org.olat.core.gui.components.form.flexible.impl.FormLayoutContainer;
 import org.olat.core.gui.components.link.Link;
 import org.olat.core.gui.control.Controller;
 import org.olat.core.gui.control.WindowControl;
+import org.olat.core.util.Util;
 import org.olat.core.util.coordinate.CoordinatorManager;
 import org.springframework.beans.factory.annotation.Autowired;
 
@@ -53,12 +55,14 @@ public class Office365AdminController extends FormBasicController {
 	private MultipleSelectionElement enabledEl;
 	private TextElement baseUrlEl;
 	private FormLink refreshDiscoveryLink;
+	private MultipleSelectionElement dataTransferConfirmationEnabledEl;
 
 	@Autowired
 	private Office365Module office365Module;
 
 	public Office365AdminController(UserRequest ureq, WindowControl wControl) {
 		super(ureq, wControl);
+		setTranslator(Util.createPackageTranslator(DocEditorController.class, getLocale(), getTranslator()));
 		initForm(ureq);
 	}
 
@@ -77,6 +81,11 @@ public class Office365AdminController extends FormBasicController {
 		refreshDiscoveryLink = uifactory.addFormLink("admin.refresh.discovery", "admin.refresh.discovery", "admin.refresh.discovery.label", formLayout, Link.BUTTON);
 		refreshDiscoveryLink.setHelpTextKey("admin.refresh.discovery.help", null);
 		
+		dataTransferConfirmationEnabledEl = uifactory.addCheckboxesHorizontal(
+				"admin.data.transfer.confirmation.enabled", formLayout, ENABLED_KEYS,
+				translateAll(getTranslator(), ENABLED_KEYS));
+		dataTransferConfirmationEnabledEl.select(ENABLED_KEYS[0], office365Module.isDataTransferConfirmationEnabled());
+		
 		FormLayoutContainer buttonLayout = FormLayoutContainer.createButtonLayout("buttons", getTranslator());
 		formLayout.add("buttons", buttonLayout);
 		uifactory.addFormSubmitButton("save", buttonLayout);
@@ -113,6 +122,9 @@ public class Office365AdminController extends FormBasicController {
 		if (urlChanged) {
 			doRefreshDiscovery();
 		}
+		
+		boolean dataTransferConfirmationEnabled = dataTransferConfirmationEnabledEl.isAtLeastSelected(1);
+		office365Module.setDataTransferConfirmationEnabled(dataTransferConfirmationEnabled);
 	}
 
 	@Override

src/main/java/org/olat/core/commons/services/doceditor/onlyoffice/OnlyOfficeEditor.java

@@ -65,6 +65,11 @@ public class OnlyOfficeEditor implements DocEditor {
 		return translator.translate("editor.display.name");
 	}
 
+	@Override
+	public boolean isDataTransferConfirmationEnabled() {
+		return onlyOfficeModule.isDataTransferConfirmationEnabled();
+	}
+
 	@Override
 	public boolean isSupportingFormat(String suffix, Mode mode, boolean hasMeta) {
 		return hasMeta && onlyOfficeService.isSupportedFormat(suffix, mode);

src/main/java/org/olat/core/commons/services/doceditor/onlyoffice/OnlyOfficeModule.java

@@ -47,6 +47,7 @@ public class OnlyOfficeModule extends AbstractSpringModule implements ConfigOnOf
 	private static final String ONLYOFFICE_ENABLED = "onlyoffice.enabled";
 	private static final String ONLYOFFICE_BASE_URL = "onlyoffice.baseUrl";
 	private static final String ONLYOFFICE_JWT_SECRET = "onlyoffice.jwt.secret";
+	private static final String ONLYOFFICE_DATA_TRANSER_CONFIRMATION_ENABLED = "onlyoffice.data.transfer.confirmation.enabled";
 	
 	@Value("${onlyoffice.enabled:false}")
 	private boolean enabled;
@@ -57,6 +58,8 @@ public class OnlyOfficeModule extends AbstractSpringModule implements ConfigOnOf
 	private String apiUrl;
 	private String jwtSecret;
 	private Key jwtSignKey;
+	@Value("${onlyoffice.data.transfer.confirmation.enabled:false}")
+	private boolean dataTransferConfirmationEnabled;
 	
 	@Autowired
 	private OnlyOfficeModule(CoordinatorManager coordinateManager) {
@@ -89,6 +92,11 @@ public class OnlyOfficeModule extends AbstractSpringModule implements ConfigOnOf
 		if(StringHelper.containsNonWhitespace(jwtSecretObj)) {
 			jwtSecret = jwtSecretObj;
 		}
+		
+		String dataTransferConfirmationEnabledObj = getStringPropertyValue(ONLYOFFICE_DATA_TRANSER_CONFIRMATION_ENABLED, true);
+		if(StringHelper.containsNonWhitespace(dataTransferConfirmationEnabledObj)) {
+			dataTransferConfirmationEnabled = "true".equals(dataTransferConfirmationEnabledObj);
+		}
 	}
 
 	@Override
@@ -140,4 +148,13 @@ public class OnlyOfficeModule extends AbstractSpringModule implements ConfigOnOf
 		return jwtSignKey;
 	}
 
+	public boolean isDataTransferConfirmationEnabled() {
+		return dataTransferConfirmationEnabled;
+	}
+
+	public void setDataTransferConfirmationEnabled(boolean dataTransferConfirmationEnabled) {
+		this.dataTransferConfirmationEnabled = dataTransferConfirmationEnabled;
+		setStringProperty(ONLYOFFICE_DATA_TRANSER_CONFIRMATION_ENABLED, Boolean.toString(dataTransferConfirmationEnabled), true);
+	}
+
 }

src/main/java/org/olat/core/commons/services/doceditor/onlyoffice/ui/OnlyOfficeAdminController.java

@@ -24,6 +24,7 @@ import static org.olat.core.gui.translator.TranslatorHelper.translateAll;
 
 import org.olat.core.commons.services.doceditor.onlyoffice.OnlyOfficeModule;
 import org.olat.core.commons.services.doceditor.onlyoffice.OnlyOfficeSecurityService;
+import org.olat.core.commons.services.doceditor.ui.DocEditorController;
 import org.olat.core.gui.UserRequest;
 import org.olat.core.gui.components.form.flexible.FormItemContainer;
 import org.olat.core.gui.components.form.flexible.elements.MultipleSelectionElement;
@@ -32,6 +33,7 @@ import org.olat.core.gui.components.form.flexible.impl.FormBasicController;
 import org.olat.core.gui.components.form.flexible.impl.FormLayoutContainer;
 import org.olat.core.gui.control.Controller;
 import org.olat.core.gui.control.WindowControl;
+import org.olat.core.util.Util;
 import org.springframework.beans.factory.annotation.Autowired;
 
 /**
@@ -47,6 +49,7 @@ public class OnlyOfficeAdminController extends FormBasicController {
 	private MultipleSelectionElement enabledEl;
 	private TextElement baseUrlEl;
 	private TextElement jwtSecretEl;
+	private MultipleSelectionElement dataTransferConfirmationEnabledEl;
 
 	@Autowired
 	private OnlyOfficeModule onlyOfficeModule;
@@ -55,6 +58,7 @@ public class OnlyOfficeAdminController extends FormBasicController {
 
 	public OnlyOfficeAdminController(UserRequest ureq, WindowControl wControl) {
 		super(ureq, wControl);
+		setTranslator(Util.createPackageTranslator(DocEditorController.class, getLocale(), getTranslator()));
 		initForm(ureq);
 	}
 
@@ -74,6 +78,11 @@ public class OnlyOfficeAdminController extends FormBasicController {
 		jwtSecretEl = uifactory.addTextElement("admin.jwt.secret", 128, secret, formLayout);
 		jwtSecretEl.setMandatory(true);
 		
+		dataTransferConfirmationEnabledEl = uifactory.addCheckboxesHorizontal(
+				"admin.data.transfer.confirmation.enabled", formLayout, ENABLED_KEYS,
+				translateAll(getTranslator(), ENABLED_KEYS));
+		dataTransferConfirmationEnabledEl.select(ENABLED_KEYS[0], onlyOfficeModule.isDataTransferConfirmationEnabled());
+		
 		FormLayoutContainer buttonLayout = FormLayoutContainer.createButtonLayout("buttons", getTranslator());
 		formLayout.add("buttons", buttonLayout);
 		uifactory.addFormSubmitButton("save", buttonLayout);
@@ -108,6 +117,9 @@ public class OnlyOfficeAdminController extends FormBasicController {
 		
 		String jwtSecret = jwtSecretEl.getValue();
 		onlyOfficeModule.setJwtSecret(jwtSecret);
+		
+		boolean dataTransferConfirmationEnabled = dataTransferConfirmationEnabledEl.isAtLeastSelected(1);
+		onlyOfficeModule.setDataTransferConfirmationEnabled(dataTransferConfirmationEnabled);
 	}
 
 	@Override

src/main/java/org/olat/core/commons/services/doceditor/ui/DataTransferConfirmationController.java

+/**
+ * <a href="http://www.openolat.org">
+ * OpenOLAT - Online Learning and Training</a><br>
+ * <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 the
+ * <a href="http://www.apache.org/licenses/LICENSE-2.0">Apache homepage</a>
+ * <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>
+ * Initial code contributed and copyrighted by<br>
+ * frentix GmbH, http://www.frentix.com
+ * <p>
+ */
+package org.olat.core.commons.services.doceditor.ui;
+
+import org.olat.core.commons.services.doceditor.DocEditor;
+import org.olat.core.gui.UserRequest;
+import org.olat.core.gui.components.Component;
+import org.olat.core.gui.components.link.Link;
+import org.olat.core.gui.components.link.LinkFactory;
+import org.olat.core.gui.components.velocity.VelocityContainer;
+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.user.UserManager;
+import org.springframework.beans.factory.annotation.Autowired;
+
+/**
+ * 
+ * Initial date: 6 May 2019<br>
+ * @author uhensler, urs.hensler@frentix.com, http://www.frentix.com
+ *
+ */
+public class DataTransferConfirmationController extends BasicController {
+
+	private Link acceptLink;
+	
+	private final DocEditor editor;
+	
+	@Autowired
+	private UserManager userManager;
+
+	public DataTransferConfirmationController(UserRequest ureq, WindowControl wControl, DocEditor editor) {
+		super(ureq, wControl);
+		this.editor = editor;
+		VelocityContainer mainVC = createVelocityContainer("data_transfer_confirmation");
+		String[] args = new String[] {
+				editor.getDisplayName(getLocale()),
+				userManager.getUserDisplayName(getIdentity())
+		};
+		String intro = translate("data.transfer.intro", args);
+		mainVC.contextPut("dataTransferIntro", intro);
+		acceptLink = LinkFactory.createButton("data.transfer.accept", mainVC, this);
+		acceptLink.setPrimary(true);
+		putInitialPanel(mainVC);
+	}
+
+	public DocEditor getEditor() {
+		return editor;
+	}
+
+	@Override
+	protected void event(UserRequest ureq, Component source, Event event) {
+		if (source == acceptLink) {
+			fireEvent(ureq, Event.DONE_EVENT);
+		}
+	}
+
+	@Override
+	protected void doDispose() {
+		
+	}
+
+}

src/main/java/org/olat/core/commons/services/doceditor/ui/DocEditorController.java

@@ -30,15 +30,21 @@ 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.util.vfs.VFSLeaf;
+import org.olat.properties.Property;
+import org.olat.properties.PropertyManager;
+import org.springframework.beans.factory.annotation.Autowired;
 
 /**
  * 
  * Initial date: 26 Mar 2019<br>
+ * 
  * @author uhensler, urs.hensler@frentix.com, http://www.frentix.com
  *
  */
 public class DocEditorController extends BasicController {
-	
+
+	private static final String PROPERTY_CATEGOTY = "doc.editor";
+
 	private VelocityContainer mainVC;
 	private DocEditorConfigController configCtrl;
 	private Controller editorCtrl;
@@ -46,27 +52,31 @@ public class DocEditorController extends BasicController {
 	private final VFSLeaf vfsLeaf;
 	private final DocEditorSecurityCallback secCallback;
 	private final DocEditorConfigs configs;
-	
+
+	@Autowired
+	private PropertyManager propertyManager;
+	private DataTransferConfirmationController dataTransferConfirmationCtrl;
+
 	public DocEditorController(UserRequest ureq, WindowControl wControl, VFSLeaf vfsLeaf,
 			DocEditorSecurityCallback secCallback, DocEditorConfigs configs) {
 		this(ureq, wControl, vfsLeaf, secCallback, configs, null);
 	}
-	
+
 	public DocEditorController(UserRequest ureq, WindowControl wControl, VFSLeaf vfsLeaf,
 			DocEditorSecurityCallback secCallback, DocEditorConfigs configs, String cssClass) {
 		super(ureq, wControl);
 		this.vfsLeaf = vfsLeaf;
 		this.secCallback = secCallback;
 		this.configs = configs;
-		
+
 		mainVC = createVelocityContainer("editor_main");
 		mainVC.contextPut("cssClass", cssClass);
-		
+
 		configCtrl = new DocEditorConfigController(ureq, wControl, vfsLeaf, secCallback);
 		listenTo(configCtrl);
 		mainVC.put("config", configCtrl.getInitialComponent());
 		configCtrl.activate(ureq, null, null);
-		
+
 		putInitialPanel(mainVC);
 	}
 
@@ -86,17 +96,56 @@ public class DocEditorController extends BasicController {
 			}
 		} else if (source == editorCtrl) {
 			fireEvent(ureq, event);
+		} else if (source == dataTransferConfirmationCtrl && Event.DONE_EVENT.equals(event)) {
+			DocEditor editor = dataTransferConfirmationCtrl.getEditor();
+			doDataTransferConfirmed(editor);
+			doOpenEditor(ureq, editor);
 		}
 		super.event(ureq, source, event);
 	}
 
 	private void doOpenEditor(UserRequest ureq, DocEditor editor) {
+		removeAsListenerAndDispose(dataTransferConfirmationCtrl);
 		removeAsListenerAndDispose(editorCtrl);
-		
-		if (editorCtrl != null) mainVC.remove("editor");
-		editorCtrl = editor.getRunController(ureq, getWindowControl(), getIdentity(), vfsLeaf, secCallback, configs);
-		listenTo(editorCtrl);
-		mainVC.put("editor", editorCtrl.getInitialComponent());
+		if (editorCtrl != null || dataTransferConfirmationCtrl != null) {
+			mainVC.remove("editor");
+		}
+
+		if (isDataTransferConfirmed(editor)) {
+			editorCtrl = editor.getRunController(ureq, getWindowControl(), getIdentity(), vfsLeaf, secCallback,
+					configs);
+			listenTo(editorCtrl);
+			mainVC.put("editor", editorCtrl.getInitialComponent());
+		} else {
+			dataTransferConfirmationCtrl = new DataTransferConfirmationController(ureq, getWindowControl(), editor);
+			listenTo(dataTransferConfirmationCtrl);
+			mainVC.put("editor", dataTransferConfirmationCtrl.getInitialComponent());
+		}
+	}
+
+	private boolean isDataTransferConfirmed(DocEditor editor) {
+		if (editor.isDataTransferConfirmationEnabled()) {
+			Property property = propertyManager.findUserProperty(getIdentity(), PROPERTY_CATEGOTY,
+					getDataTransferPropertyName(editor));
+			if (property == null || isNotConfirmedYet(property)) {
+				return false;
+			}
+		}
+		return true;
+	}
+
+	private boolean isNotConfirmedYet(Property property) {
+		return !Boolean.valueOf(property.getStringValue());
+	}
+
+	private void doDataTransferConfirmed(DocEditor editor) {
+		Property property = propertyManager.createUserPropertyInstance(getIdentity(), PROPERTY_CATEGOTY,
+				getDataTransferPropertyName(editor), null, null, Boolean.TRUE.toString(), null);
+		propertyManager.saveProperty(property);
+	}
+
+	private String getDataTransferPropertyName(DocEditor editor) {
+		return editor.getType() + ".data.transfer.accepted";
 	}
 
 	@Override

src/main/java/org/olat/core/commons/services/doceditor/ui/_content/data_transfer_confirmation.html

+<div class="o_warning o_doceditor_data_transfer">
+	<h4>$r.translate("data.transfer.title")</h4>
+	<p>$dataTransferIntro</p>
+	<div class="o_button_group">
+		$r.render("data.transfer.accept")
+	</div>
+</div>
\ No newline at end of file

src/main/java/org/olat/core/commons/services/doceditor/ui/_i18n/LocalStrings_de.properties

 admin.collabora=$org.olat.core.commons.services.doceditor.collabora.ui\:editor.display.name
+admin.data.transfer.confirmation.enabled=Best\u00E4tigung Datentransfer
 admin.menu.title.alt=Dokumenteneditoren
 admin.menu.title=Dokumenteneditoren
 admin.office365=$org.olat.core.commons.services.doceditor.office365.ui\:editor.display.name
@@ -8,6 +9,9 @@ create.doc.button=Dokument erstellen
 create.doc.name.notvalid=$org.olat.core.commons.modules.bc\:cfile.name.notvalid
 create.doc.name=Dateiname
 create.doc.type=Dateityp
+data.transfer.accept=Ich stimme der Daten\u00FCbertragung zu
+data.transfer.intro=Beim \u00D6ffnen des Dokumentes in "{0}" wird das Dokument tempor\u00E4r auf einem externen Server gespeichert. Zudem wird Ihr Name ({1}) zur Darstellung im Editor \u00FCbergeben. Bitte best\u00E4tigen Sie diese Daten\u00FCbertragung.
+data.transfer.title=Zustimmung Daten\u00FCbertragung
 doc.type.css=Cascading Style Sheet
 doc.type.docx=Word
 doc.type.html=HTML-Dokument

src/main/java/org/olat/core/commons/services/doceditor/ui/_i18n/LocalStrings_en.properties

 admin.collabora=$org.olat.core.commons.services.doceditor.collabora.ui\:editor.display.name
+admin.data.transfer.confirmation.enabled=Confirmation of data transfer
 admin.menu.title.alt=Document editors
 admin.menu.title=Document editors
 admin.office365=$org.olat.core.commons.services.doceditor.office365.ui\:editor.display.name
@@ -8,6 +9,9 @@ create.doc.button=Create document
 create.doc.name.notvalid=$org.olat.core.commons.modules.bc\:cfile.name.notvalid
 create.doc.name=File name
 create.doc.type=Type
+data.transfer.accept=I accept the data transfer
+data.transfer.intro=When opening the document in "{0}", the document is temporarily saved on an external server. In addition, your name ({1}) is passed for display in the editor. Please confirm this data transfer.
+data.transfer.title=Confirmation of data transfer
 doc.type.css=Cascading Style Sheet
 doc.type.docx=Word
 doc.type.html=HTML Document

src/main/resources/serviceconfig/olat.properties

@@ -1475,6 +1475,7 @@ edusharing.auth.affiliation.name=${instance.id}
 ########################################
 collabora.enabled=false
 collabora.baseUrl=https://collabora.example.org/
+collabora.data.transfer.confirmation.enabled=false
 
 
 ########################################
@@ -1483,6 +1484,7 @@ collabora.baseUrl=https://collabora.example.org/
 onlyoffice.enabled=false
 onlyoffice.baseUrl=https://onlyoffice.example.org/
 onlyoffice.api.path=web-apps/apps/api/documents/api.js
+onlyoffice.data.transfer.confirmation.enabled=false
 
 
 ########################################
@@ -1490,6 +1492,7 @@ onlyoffice.api.path=web-apps/apps/api/documents/api.js
 ########################################
 office365.enabled=false
 office365.baseUrl=https://office365.example.org/
+office365.data.transfer.confirmation.enabled=false
 
 
 ########################################

src/main/webapp/static/themes/light/modules/_doceditor.scss

@@ -89,6 +89,11 @@ body.o_doceditor_body {
 			}
 		}
 	}
+	
+	.o_doceditor_data_transfer {
+		margin-right: 15px;
+		margin-left: 15px;
+	}
 }
 
 .o_web_content {