Add basic export to the task directory SORMAS-Foundation#3275 (SORMAS-Foundation#3529)

* Add basic export to the task directory SORMAS-Foundation#3275

* Put the basic export button directly in the top layout of the task directory SORMAS-Foundation#3275

Author: alexandre-gille

sormas-api/src/main/java/de/symeda/sormas/api/user/UserRight.java

@@ -580,6 +580,25 @@ public enum UserRight {
 			ADMIN,
 			NATIONAL_USER
 	),
+	TASK_EXPORT(
+			ADMIN,
+			NATIONAL_USER,
+			NATIONAL_CLINICIAN,
+			POE_NATIONAL_USER,
+			SURVEILLANCE_SUPERVISOR,
+			ADMIN_SUPERVISOR,
+			SURVEILLANCE_OFFICER,
+			CASE_SUPERVISOR,
+			CASE_OFFICER,
+			CONTACT_SUPERVISOR,
+			CONTACT_OFFICER,
+			POE_SUPERVISOR,
+			POE_INFORMANT,
+			HOSPITAL_INFORMANT,
+			COMMUNITY_INFORMANT,
+			LAB_USER,
+			EXTERNAL_LAB_USER,
+			EVENT_OFFICER),
 	ACTION_CREATE(
 			ADMIN,
 			NATIONAL_USER,

sormas-ui/src/main/java/de/symeda/sormas/ui/task/TasksView.java

@@ -17,21 +17,29 @@
  *******************************************************************************/
 package de.symeda.sormas.ui.task;
 
+import java.util.Date;
+
 import com.vaadin.icons.VaadinIcons;
 import com.vaadin.navigator.ViewChangeListener.ViewChangeEvent;
+import com.vaadin.server.FileDownloader;
+import com.vaadin.server.StreamResource;
 import com.vaadin.ui.Button;
 import com.vaadin.ui.themes.ValoTheme;
 
 import de.symeda.sormas.api.i18n.Captions;
+import de.symeda.sormas.api.i18n.I18nProperties;
+import de.symeda.sormas.api.i18n.Strings;
 import de.symeda.sormas.api.task.TaskContext;
 import de.symeda.sormas.api.task.TaskCriteria;
 import de.symeda.sormas.api.task.TaskStatus;
 import de.symeda.sormas.api.user.UserRight;
+import de.symeda.sormas.api.utils.DateHelper;
 import de.symeda.sormas.ui.ControllerProvider;
 import de.symeda.sormas.ui.UserProvider;
 import de.symeda.sormas.ui.ViewModelProviders;
 import de.symeda.sormas.ui.utils.AbstractView;
 import de.symeda.sormas.ui.utils.ButtonHelper;
+import de.symeda.sormas.ui.utils.GridExportStreamResource;
 import de.symeda.sormas.ui.utils.ViewConfiguration;
 
 @SuppressWarnings("serial")
@@ -57,6 +65,20 @@ public TasksView() {
 		taskListComponent = new TaskGridComponent(getViewTitleLabel(), this);
 		addComponent(taskListComponent);
 
+		if (UserProvider.getCurrent().hasUserRight(UserRight.TASK_EXPORT)) {
+			Button basicExportButton = ButtonHelper.createIconButton(Captions.exportBasic, VaadinIcons.TABLE, null, ValoTheme.BUTTON_PRIMARY);
+			basicExportButton.setDescription(I18nProperties.getString(Strings.infoBasicExport));
+			addHeaderComponent(basicExportButton);
+
+			StreamResource streamResource = new GridExportStreamResource(
+				taskListComponent.getGrid(),
+				"sormas_tasks",
+				"sormas_tasks_" + DateHelper.formatDateForExport(new Date()) + ".csv",
+				TaskGrid.EDIT_BTN_ID);
+			FileDownloader fileDownloader = new FileDownloader(streamResource);
+			fileDownloader.extend(basicExportButton);
+		}
+
 		if (UserProvider.getCurrent().hasUserRight(UserRight.PERFORM_BULK_OPERATIONS)) {
 			Button btnEnterBulkEditMode = ButtonHelper.createIconButton(Captions.actionEnterBulkEditMode, VaadinIcons.CHECK_SQUARE_O, null);
 			btnEnterBulkEditMode.setVisible(!viewConfiguration.isInEagerMode());