package org.argeo.activities.ui;
   
   import static org.argeo.eclipse.ui.EclipseUiUtils.isEmpty;
   
   import java.util.GregorianCalendar;
   import java.util.List;
   
   import javax.jcr.Node;
   import javax.jcr.RepositoryException;
  
  import org.argeo.activities.ActivitiesException;
  import org.argeo.activities.ActivitiesService;
  import org.argeo.activities.ActivitiesTypes;
  import org.argeo.connect.UserAdminService;
  import org.argeo.connect.core.OfficeRole;
  import org.argeo.connect.ui.ConnectUiUtils;
  import org.argeo.connect.ui.widgets.DateText;
  import org.argeo.connect.ui.widgets.GroupDropDown;
  import org.argeo.eclipse.ui.EclipseUiUtils;
  import org.eclipse.jface.dialogs.MessageDialog;
  import org.eclipse.jface.viewers.TableViewer;
  import org.eclipse.jface.wizard.Wizard;
  import org.eclipse.jface.wizard.WizardPage;
  import org.eclipse.swt.SWT;
  import org.eclipse.swt.layout.GridData;
  import org.eclipse.swt.layout.GridLayout;
  import org.eclipse.swt.widgets.Composite;
  import org.eclipse.swt.widgets.Label;
  import org.eclipse.swt.widgets.Text;
  
  /**
   * Generic wizard to created a new task. Caller might use setRelatedTo method to
   * add some related entities after creation and before opening the wizard
   * dialog.
   * 
   * The newly created task might be retrieved after termination if Dialog.open()
   * return Window.OK.
   * 
   * Warning: the passed session is not saved: the task stays in a transient mode
   * until the caller save the session to enable rollback.
   */
  
  public class NewSimpleTaskWizard extends Wizard {
  	// private final static Log log = LogFactory
  	// .getLog(CreateSimpleTaskWizard.class);
  
  	// Set upon instantiation
  	private final UserAdminService userAdminService;
  	private final ActivitiesService activityService;
  	private final Node draftTask;
  
  	// Business objects
  	private List<Node> relatedTo;
  	// private String assignedToGroupId;
  
  	// This page widgets
  	protected Text titleTxt;
  	protected Text descTxt;
  	private GroupDropDown assignedToDD;
  
  	private DateText dueDateCmp;
  	private DateText wakeUpDateCmp;
  
  	protected TableViewer itemsViewer;
  
  	public NewSimpleTaskWizard(UserAdminService userAdminService, ActivitiesService activityService, Node draftTask) {
  		this.userAdminService = userAdminService;
  		this.activityService = activityService;
  		this.draftTask = draftTask;
  	}
  
  	public void setRelatedTo(List<Node> relatedTo) {
  		this.relatedTo = relatedTo;
  	}
  
  	// // Exposes to extending classes
  	// protected Session getSession() {
  	// return currSession;
  	// }
  
  	@Override
  	public void addPages() {
  		setWindowTitle("Create a task");
  		SelectChildrenPage page = new SelectChildrenPage("Main page");
  		addPage(page);
  	}
  
  	/**
  	 * Called when the user click on 'Finish' in the wizard. The task is then
  	 * created and the corresponding session saved.
  	 */
  	@Override
  	public boolean performFinish() {
  		// Sanity check
  		String msg = null;
  		String title = titleTxt.getText();
  		if (isEmpty(title))
  			msg = "Please give at least a title";
  
 		// if (isEmpty(assignedToGroupId))
 		// msg = "Please assign this task to a group.";
 		if (msg != null) {
 			MessageDialog.openError(getShell(), "Uncomplete information", msg);
 			return false;
 		}
 
 		try {
 			activityService.configureTask(draftTask, ActivitiesTypes.ACTIVITIES_TASK,
 					draftTask.getSession().getUserID(), titleTxt.getText(), descTxt.getText(), assignedToDD.getText(),
 					relatedTo, GregorianCalendar.getInstance(), dueDateCmp.getCalendar(), wakeUpDateCmp.getCalendar());
 		} catch (RepositoryException e) {
 			throw new ActivitiesException("Unable to create simple task with title " + titleTxt.getText(), e);
 		}
 
 		return true;
 	}
 
 	@Override
 	public boolean performCancel() {
 		return true;
 	}
 
 	@Override
 	public boolean canFinish() {
 		return true;
 	}
 
 	protected class SelectChildrenPage extends WizardPage {
 		private static final long serialVersionUID = 1L;
 
 		public SelectChildrenPage(String pageName) {
 			super(pageName);
 			setTitle("Create a new simple task");
 			setMessage("Please fill out following information.");
 		}
 
 		public void createControl(Composite parent) {
 			parent.setLayout(new GridLayout(4, false));
 
 			// TITLE
 			ConnectUiUtils.createBoldLabel(parent, "Title");
 			titleTxt = new Text(parent, SWT.BORDER);
 			titleTxt.setMessage("A title for the new task");
 			GridData gd = new GridData(SWT.FILL, SWT.CENTER, true, false);
 			gd.horizontalSpan = 3;
 			titleTxt.setLayoutData(gd);
 
 			// ASSIGNED TO
 			ConnectUiUtils.createBoldLabel(parent, "Assigned to");
 			Text assignedToTxt = new Text(parent, SWT.BORDER);
 			assignedToTxt.setMessage("Pick up a group");
 			assignedToTxt.setToolTipText("Choose a group or person to manage this issue");
 			assignedToTxt.setLayoutData(EclipseUiUtils.fillWidth(3));
 			// assignedToDD = new ExistingGroupsDropDown(assignedToTxt, userAdminService,
 			// true, false);
 			assignedToDD = new GroupDropDown(assignedToTxt, userAdminService, OfficeRole.coworker.dn());
 
 			// ConnectWorkbenchUtils.createBoldLabel(parent, "Assigned to");
 			// Composite assignedToCmp = new Composite(parent, SWT.NO_FOCUS);
 			// gd = new GridData(SWT.FILL, SWT.CENTER, true, false, 3, 1);
 			// assignedToCmp.setLayoutData(gd);
 			// GridLayout gl = EclipseUiUtils.noSpaceGridLayout(new
 			// GridLayout(2, false));
 			// gl.horizontalSpacing = 5;
 			// assignedToCmp.setLayout(gl);
 			// final Text assignedToTxt = new Text(assignedToCmp, SWT.BORDER |
 			// SWT.NO_FOCUS);
 			// assignedToTxt.setMessage("Assign a group to manage this task");
 			// CmsUtils.style(assignedToTxt, ConnectUiStyles.FORCE_BORDER);
 			// assignedToTxt.setLayoutData(EclipseUiUtils.fillWidth());
 			// assignedToTxt.setEnabled(false);
 			//
 			// Link assignedToLk = new Link(assignedToCmp, SWT.NONE);
 			// assignedToLk.setText("<a>Pick up</a>");
 			// assignedToLk.addSelectionListener(new SelectionAdapter() {
 			// private static final long serialVersionUID = 1L;
 			//
 			// @Override
 			// public void widgetSelected(final SelectionEvent event) {
 			// PickUpGroupDialog diag = new
 			// PickUpGroupDialog(assignedToTxt.getShell(), "Choose a group",
 			// userAdminService);
 			// if (diag.open() == Window.OK) {
 			// assignedToGroupId = diag.getSelected().getName();
 			// if (EclipseUiUtils.notEmpty(assignedToGroupId))
 			// assignedToTxt.setText(userAdminService.getUserDisplayName(assignedToGroupId));
 			// }
 			// }
 			// });
 
 			// DUE DATE
 			ConnectUiUtils.createBoldLabel(parent, "Due date");
 			dueDateCmp = new DateText(parent, SWT.NO_FOCUS);
 
 			// WAKE UP DATE
 			Label lbl = ConnectUiUtils.createBoldLabel(parent, "Wake up date");
 			gd = new GridData();
 			gd.horizontalIndent = 15;
 			lbl.setLayoutData(gd);
 			wakeUpDateCmp = new DateText(parent, SWT.NO_FOCUS);
 
 			// DESCRIPTION
 			Label label = new Label(parent, SWT.LEAD | SWT.TOP);
 			label.setText("Description");
 			label.setFont(EclipseUiUtils.getBoldFont(parent));
 			gd = new GridData(SWT.LEAD, SWT.TOP, false, false);
 			label.setLayoutData(gd);
 
 			descTxt = new Text(parent, SWT.BORDER | SWT.MULTI | SWT.WRAP);
 			descTxt.setMessage("A description");
 			gd = EclipseUiUtils.fillAll();
 			gd.horizontalSpan = 3;
 			gd.heightHint = 150;
 			descTxt.setLayoutData(gd);
 			// Don't forget this.
 			setControl(titleTxt);
 			titleTxt.setFocus();
 		}
 	}
 }