2521: Explore the possibility to port the StatMan interface onto Dataminer

https://support.d4science.org/issues/2521

Fixed Layout on ComputationPanel

git-svn-id: https://svn.d4science.research-infrastructures.eu/gcube/trunk/portlets/user/data-miner-manager@126949 82a268e6-3cf1-43bd-a215-b396298e98cf

src/main/java/org/gcube/portlets/user/dataminermanager/client/bean/Operator.java

@@ -11,7 +11,9 @@ import org.gcube.portlets.user.dataminermanager.client.bean.parameters.Parameter
 import org.gcube.portlets.user.dataminermanager.shared.StringUtil;
 
 /**
- * @author ceras
+ * 
+ * @author Giancarlo Panichi
+ * email: <a href="mailto:g.panichi@isti.cnr.it">g.panichi@isti.cnr.it</a> 
  *
  */
 public class Operator implements Serializable {

src/main/java/org/gcube/portlets/user/dataminermanager/client/events/ComponentRefreshLayoutEvent.java

@@ -0,0 +1,59 @@
+package org.gcube.portlets.user.dataminermanager.client.events;
+
+import com.google.gwt.event.shared.EventHandler;
+import com.google.gwt.event.shared.GwtEvent;
+import com.google.gwt.event.shared.HandlerRegistration;
+import com.google.gwt.event.shared.HasHandlers;
+
+/**
+ * Component Refresh Layout Event
+ * 
+ * 
+ * @author "Giancarlo Panichi" <a
+ *         href="mailto:g.panichi@isti.cnr.it">g.panichi@isti.cnr.it</a>
+ *
+ */
+public class ComponentRefreshLayoutEvent
+		extends
+		GwtEvent<ComponentRefreshLayoutEvent.ComponentRefreshLayoutEventHandler> {
+
+	public static Type<ComponentRefreshLayoutEventHandler> TYPE = new Type<ComponentRefreshLayoutEventHandler>();
+
+	public interface ComponentRefreshLayoutEventHandler extends EventHandler {
+		void onRefresh(ComponentRefreshLayoutEvent event);
+	}
+
+	public interface HasComponentRefreshLayoutEventHandler extends HasHandlers {
+		public HandlerRegistration addComponentRefreshLayoutEventHandler(
+				ComponentRefreshLayoutEventHandler handler);
+	}
+
+	public ComponentRefreshLayoutEvent() {
+
+	}
+
+	@Override
+	protected void dispatch(ComponentRefreshLayoutEventHandler handler) {
+		handler.onRefresh(this);
+	}
+
+	@Override
+	public Type<ComponentRefreshLayoutEventHandler> getAssociatedType() {
+		return TYPE;
+	}
+
+	public static Type<ComponentRefreshLayoutEventHandler> getType() {
+		return TYPE;
+	}
+
+	public static void fire(HasHandlers source,
+			ComponentRefreshLayoutEvent event) {
+		source.fireEvent(event);
+	}
+
+	@Override
+	public String toString() {
+		return "ComponentRefreshLayoutEvent []";
+	}
+
+}

src/main/java/org/gcube/portlets/user/dataminermanager/client/events/EmptyComputationPanelEvent.java

@@ -1,58 +0,0 @@
-package org.gcube.portlets.user.dataminermanager.client.events;
-
-import com.google.gwt.event.shared.EventHandler;
-import com.google.gwt.event.shared.GwtEvent;
-import com.google.gwt.event.shared.HandlerRegistration;
-import com.google.gwt.event.shared.HasHandlers;
-
-/**
- * Empty ComputationPanal Event
- * 
- * 
- * @author "Giancarlo Panichi" <a
- *         href="mailto:g.panichi@isti.cnr.it">g.panichi@isti.cnr.it</a>
- *
- */
-public class EmptyComputationPanelEvent extends
-		GwtEvent<EmptyComputationPanelEvent.EmptyComputationPanelEventHandler> {
-
-	public static Type<EmptyComputationPanelEventHandler> TYPE = new Type<EmptyComputationPanelEventHandler>();
-
-	public interface EmptyComputationPanelEventHandler extends EventHandler {
-		void onEmpty(EmptyComputationPanelEvent event);
-	}
-
-	public interface HasEmptyComputationPanelEventHandler extends HasHandlers {
-		public HandlerRegistration addEmptyComputationPanelEventHandler(
-				EmptyComputationPanelEventHandler handler);
-	}
-	
-	public EmptyComputationPanelEvent() {
-
-	}
-
-	@Override
-	protected void dispatch(EmptyComputationPanelEventHandler handler) {
-		handler.onEmpty(this);
-	}
-
-	@Override
-	public Type<EmptyComputationPanelEventHandler> getAssociatedType() {
-		return TYPE;
-	}
-
-	public static Type<EmptyComputationPanelEventHandler> getType() {
-		return TYPE;
-	}
-
-	public static void fire(HasHandlers source,
-			EmptyComputationPanelEvent emptyComputationPanelEvent) {
-		source.fireEvent(emptyComputationPanelEvent);
-	}
-
-	@Override
-	public String toString() {
-		return "EmptyComputationPanelEvent []";
-	}
-
-}

src/main/java/org/gcube/portlets/user/dataminermanager/client/events/StartComputationEvent.java

@@ -0,0 +1,83 @@
+package org.gcube.portlets.user.dataminermanager.client.events;
+
+import org.gcube.portlets.user.dataminermanager.client.bean.Operator;
+
+import com.google.gwt.event.shared.EventHandler;
+import com.google.gwt.event.shared.GwtEvent;
+import com.google.gwt.event.shared.HandlerRegistration;
+import com.google.gwt.event.shared.HasHandlers;
+
+/**
+ * Start Computation Event
+ * 
+ * 
+ * @author "Giancarlo Panichi" <a
+ *         href="mailto:g.panichi@isti.cnr.it">g.panichi@isti.cnr.it</a>
+ *
+ */
+public class StartComputationEvent extends
+		GwtEvent<StartComputationEvent.StartComputationEventHandler> {
+
+	public static Type<StartComputationEventHandler> TYPE = new Type<StartComputationEventHandler>();
+	private Operator op;
+	private String computationTitle;
+	private String computationDescription;
+	
+	public interface StartComputationEventHandler extends EventHandler {
+		void onStart(StartComputationEvent event);
+	}
+
+	public interface HasStartComputationEventHandler extends HasHandlers {
+		public HandlerRegistration addStartComputationEventHandler(
+				StartComputationEventHandler handler);
+	}
+	
+	public StartComputationEvent(Operator op, String computationTitle, String computationDescription) {
+		this.op=op;
+		this.computationTitle=computationTitle;
+		this.computationDescription=computationDescription;
+		
+	}
+
+	@Override
+	protected void dispatch(StartComputationEventHandler handler) {
+		handler.onStart(this);
+	}
+
+	@Override
+	public Type<StartComputationEventHandler> getAssociatedType() {
+		return TYPE;
+	}
+
+	public static Type<StartComputationEventHandler> getType() {
+		return TYPE;
+	}
+
+	public static void fire(HasHandlers source,
+			StartComputationEvent startComputationEvent) {
+		source.fireEvent(startComputationEvent);
+	}
+
+	public Operator getOp() {
+		return op;
+	}
+
+	public String getComputationTitle() {
+		return computationTitle;
+	}
+
+	public String getComputationDescription() {
+		return computationDescription;
+	}
+
+	@Override
+	public String toString() {
+		return "StartComputationEvent [op=" + op + ", computationTitle="
+				+ computationTitle + ", computationDescription="
+				+ computationDescription + "]";
+	}
+
+	
+	
+	
+}

src/main/java/org/gcube/portlets/user/dataminermanager/client/experimentArea/ComputationPanel.java

@@ -1,9 +1,13 @@
 package org.gcube.portlets.user.dataminermanager.client.experimentArea;
 
 import org.gcube.portlets.user.dataminermanager.client.DataMinerManager;
-import org.gcube.portlets.user.dataminermanager.client.events.EmptyComputationPanelEvent;
-import org.gcube.portlets.user.dataminermanager.client.events.EmptyComputationPanelEvent.EmptyComputationPanelEventHandler;
-import org.gcube.portlets.user.dataminermanager.client.events.EmptyComputationPanelEvent.HasEmptyComputationPanelEventHandler;
+import org.gcube.portlets.user.dataminermanager.client.bean.Operator;
+import org.gcube.portlets.user.dataminermanager.client.events.ComponentRefreshLayoutEvent;
+import org.gcube.portlets.user.dataminermanager.client.events.StartComputationEvent;
+import org.gcube.portlets.user.dataminermanager.client.events.ComponentRefreshLayoutEvent.ComponentRefreshLayoutEventHandler;
+import org.gcube.portlets.user.dataminermanager.client.events.StartComputationEvent.StartComputationEventHandler;
+import org.gcube.portlets.user.dataminermanager.client.events.StartComputationEvent.HasStartComputationEventHandler;
+import org.gcube.portlets.user.dataminermanager.client.experimentArea.ComputationParametersPanel.ComputationParametersPanelHandler;
 
 import com.google.gwt.event.shared.HandlerRegistration;
 import com.google.gwt.user.client.ui.HTML;
@@ -31,13 +35,14 @@ import com.sencha.gxt.widget.core.client.toolbar.ToolBar;
  *
  */
 public class ComputationPanel extends FramedPanel implements
-		HasEmptyComputationPanelEventHandler {
+		HasStartComputationEventHandler {
 	private static final String DELETE_ALL_BUTTON_TOOLTIP = "Remove All Operators";
 	private TextButton removeAllButton;
 	private ToolBar toolBar;
 	private VerticalLayoutContainer topV;
 	private VerticalLayoutContainer v;
-
+	private ComputationParametersPanel computationParametersPanel;
+	 
 	public ComputationPanel() {
 		super();
 		init();
@@ -47,10 +52,10 @@ public class ComputationPanel extends FramedPanel implements
 	private void init() {
 		setHeaderVisible(false);
 		setBodyStyle("backgroundColor:white;");
-		;
 	}
 
 	private void create() {
+		computationParametersPanel=null;
 		topV = new VerticalLayoutContainer();
 		setToolBar();
 		topV.add(toolBar, new VerticalLayoutData(1, -1, new Margins(0)));
@@ -76,8 +81,7 @@ public class ComputationPanel extends FramedPanel implements
 			@Override
 			public void onSelect(SelectEvent event) {
 				emptyPanel();
-				EmptyComputationPanelEvent emptyEvent = new EmptyComputationPanelEvent();
-				fireEvent(emptyEvent);
+				computationParametersPanel = null;
 			}
 		});
 
@@ -95,30 +99,49 @@ public class ComputationPanel extends FramedPanel implements
 
 	}
 
-	/**
-	 * 
-	 * @param workflowOperatorPanel
-	 *            algorithm
-	 */
-	public void addWorkflowOperatorPanel(
-			WorkflowOperatorPanel workflowOperatorPanel) {
+	
+	private void addComputationParametersPanel(
+			ComputationParametersPanel computationParametersPanel) {
 		v.clear();
 		HBoxLayoutContainer hBox = new HBoxLayoutContainer();
 		hBox.setPack(BoxLayoutPack.CENTER);
 		hBox.add(new Image(DataMinerManager.resources.workflowConnector1()),
 				new BoxLayoutData(new Margins(0)));
 		v.add(hBox, new VerticalLayoutData(1, -1, new Margins(10,0,0,0)));
-		v.add(workflowOperatorPanel, new VerticalLayoutData(-1, -1,
-				new Margins(0))); // operator
+		v.add(computationParametersPanel, new VerticalLayoutData(1, -1,
+				new Margins(0,5,5,5)));
 		removeAllButton.setEnabled(true);
 		forceLayout();
 	}
 
 	@Override
-	public HandlerRegistration addEmptyComputationPanelEventHandler(
-			EmptyComputationPanelEventHandler handler) {
-		return addHandler(handler, EmptyComputationPanelEvent.getType());
+	public HandlerRegistration addStartComputationEventHandler(
+			StartComputationEventHandler handler) {
+		return addHandler(handler, StartComputationEvent.getType());
 
 	}
 
+	public void addOperator(Operator op) {
+		computationParametersPanel = new ComputationParametersPanel(op);
+		computationParametersPanel.setHandler(new ComputationParametersPanelHandler() {
+			@Override
+			public void startComputation(String computationTitle,
+					String computationDescription) {
+				if (computationParametersPanel != null) {
+					forceLayout();
+					computationParametersPanel.updateOperatorParametersValues();
+					Operator op = computationParametersPanel.getOperator();
+					StartComputationEvent startComputationEvent = new StartComputationEvent(op, computationTitle, computationDescription);
+					fireEvent(startComputationEvent);
+				}
+				
+			}
+		});
+
+	    addComputationParametersPanel(computationParametersPanel);
+		
+	}
+
+	
+
 }

src/main/java/org/gcube/portlets/user/dataminermanager/client/experimentArea/ComputationParametersPanel.java

@@ -0,0 +1,295 @@
+/**
+ * 
+ */
+package org.gcube.portlets.user.dataminermanager.client.experimentArea;
+
+import java.util.Date;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import org.gcube.portlets.user.dataminermanager.client.DataMinerManager;
+import org.gcube.portlets.user.dataminermanager.client.bean.Operator;
+import org.gcube.portlets.user.dataminermanager.client.bean.parameters.ColumnListParameter;
+import org.gcube.portlets.user.dataminermanager.client.bean.parameters.ColumnParameter;
+import org.gcube.portlets.user.dataminermanager.client.bean.parameters.Parameter;
+import org.gcube.portlets.user.dataminermanager.client.events.ComponentRefreshLayoutEvent;
+import org.gcube.portlets.user.dataminermanager.client.events.ComponentRefreshLayoutEvent.ComponentRefreshLayoutEventHandler;
+import org.gcube.portlets.user.dataminermanager.client.events.ComponentRefreshLayoutEvent.HasComponentRefreshLayoutEventHandler;
+import org.gcube.portlets.user.dataminermanager.client.parametersfield.AbstractFld;
+import org.gcube.portlets.user.dataminermanager.client.parametersfield.OperatorFieldWidget;
+import org.gcube.portlets.user.dataminermanager.client.parametersfield.TabularFld;
+import org.gcube.portlets.user.dataminermanager.client.util.UtilsGXT3;
+
+import com.allen_sauer.gwt.log.client.Log;
+import com.google.gwt.core.client.GWT;
+import com.google.gwt.dom.client.Style.Unit;
+import com.google.gwt.event.shared.HandlerRegistration;
+import com.google.gwt.i18n.client.DateTimeFormat;
+import com.google.gwt.i18n.client.DateTimeFormat.PredefinedFormat;
+import com.google.gwt.resources.client.ImageResource;
+import com.google.gwt.user.client.rpc.AsyncCallback;
+import com.google.gwt.user.client.ui.HTML;
+import com.google.gwt.user.client.ui.Image;
+import com.sencha.gxt.core.client.util.Margins;
+import com.sencha.gxt.widget.core.client.button.TextButton;
+import com.sencha.gxt.widget.core.client.container.HtmlLayoutContainer;
+import com.sencha.gxt.widget.core.client.container.MarginData;
+import com.sencha.gxt.widget.core.client.container.SimpleContainer;
+import com.sencha.gxt.widget.core.client.container.VerticalLayoutContainer;
+import com.sencha.gxt.widget.core.client.container.VerticalLayoutContainer.VerticalLayoutData;
+import com.sencha.gxt.widget.core.client.event.SelectEvent;
+import com.sencha.gxt.widget.core.client.event.SelectEvent.SelectHandler;
+import com.sencha.gxt.widget.core.client.form.FieldLabel;
+import com.sencha.gxt.widget.core.client.form.FieldSet;
+import com.sencha.gxt.widget.core.client.form.FormPanel;
+import com.sencha.gxt.widget.core.client.form.TextField;
+
+/**
+ * 
+ * @author Giancarlo Panichi email: <a
+ *         href="mailto:g.panichi@isti.cnr.it">g.panichi@isti.cnr.it</a>
+ *
+ */
+public class ComputationParametersPanel extends SimpleContainer {
+
+	public interface ComputationParametersPanelHandler {
+		public void startComputation(String computationTitle,
+				String computationDescription);
+	}
+
+	private static final String START_BUTTON_TOOLTIP = "Start Computation";
+
+	private static final ImageResource PRELOAD_IMAGE = DataMinerManager.resources
+			.loaderBig();
+
+	private VerticalLayoutContainer v;
+	private Operator operator;
+	private FormPanel parametersPanel;
+	private FieldSet parametersFieldSet;
+	private VerticalLayoutContainer vParameters;
+	private Map<String, OperatorFieldWidget> fieldWidgetsMap;
+	private ComputationParametersPanelHandler handler = null;
+	private TextField titleField;
+	private String defaultComputationTitle;
+
+	/*
+	 * public ComputationParametersPanel(DataMinerPortletServiceAsync service,
+	 * Operator operator, ComputationParametersPanelHandler handler) {
+	 * this(operator); this.setHandler(handler); }
+	 */
+
+	public ComputationParametersPanel(Operator operator) {
+		super();
+		this.operator = operator;
+		fieldWidgetsMap = new HashMap<>();
+		try {
+			setDefaultComputationTitle();
+			init();
+			create();
+		} catch (Throwable e) {
+			e.printStackTrace();
+		}
+	}
+
+	
+	private void init() {
+		addStyleName("workflow");
+	}
+
+	private void create() {
+		v = new VerticalLayoutContainer();
+		add(v);
+
+		Image img = new Image(GWT.getModuleBaseURL() + "../images/operators/"
+				+ (operator.hasImage() ? operator.getId() : "DEFAULT_IMAGE")
+				+ ".png");
+		img.setStylePrimaryName("workflow-icon");
+		v.add(img, new VerticalLayoutData(-1, -1, new Margins(-10,0,0,5)));
+		
+		HtmlLayoutContainer title = new HtmlLayoutContainer(operator.getName());
+		title.addStyleName("workflow-title");
+		v.add(title, new VerticalLayoutData(-1, -1, new Margins(15,0,0,-25)));
+
+		String descr = operator.getDescription();
+		descr = (descr == null || descr.contentEquals("")) ? "no-description"
+				: operator.getDescription();
+		HtmlLayoutContainer description = new HtmlLayoutContainer(descr);
+		description.addStyleName("workflow-description");
+		v.add(description, new VerticalLayoutData(-1, -1, new Margins(0,0,0,5)));
+
+		addTitleField();
+
+		parametersPanel = new FormPanel() {
+			@Override
+			public boolean isValid(boolean preventMark) {
+				boolean flag = super.isValid(preventMark);
+
+				if (flag) {
+					for (Map.Entry<String, OperatorFieldWidget> entry : fieldWidgetsMap
+							.entrySet()) {
+						OperatorFieldWidget fieldWidget = entry.getValue();
+						flag = flag && fieldWidget.isValid();
+					}
+				}
+				return flag;
+			}
+
+		};
+		parametersPanel.setBorders(false);
+
+		// parametersPanel.getElement().getStyle().setMargin(20, px);
+		parametersFieldSet = new FieldSet();
+		parametersFieldSet.setHeadingText("Parameters");
+		vParameters = new VerticalLayoutContainer();
+		parametersFieldSet.add(vParameters, new MarginData(0));
+		parametersFieldSet.setCollapsible(false);
+		parametersPanel.add(parametersFieldSet, new MarginData(new Margins(5,5, 5, 5)));
+
+		v.add(parametersPanel, new VerticalLayoutData(1, -1, new Margins()));
+
+		loadOperatorParameters();
+		
+		fireEvent(new ComponentRefreshLayoutEvent());
+	}
+
+	/**
+	 * 
+	 */
+	private void addTitleField() {
+		titleField = new TextField();
+		titleField.setWidth(250);
+		titleField.setValue(defaultComputationTitle);
+		FieldLabel titleLabel = new FieldLabel(titleField, "Computation Title");
+		v.add(titleLabel, new VerticalLayoutData(-1, -1,
+				new Margins(0,0,0,5)));
+	}
+
+	/**
+	 * @param parametersPanel
+	 */
+	private void loadOperatorParameters() {
+		DataMinerManager.getService().getParameters(operator,
+				new AsyncCallback<List<Parameter>>() {
+					@Override
+					public void onSuccess(List<Parameter> result) {
+						Log.debug("Retrieved Parameters!");
+						operator.setOperatorParameters(result);
+						vParameters.clear();
+						showForm();
+					}
+
+					@Override
+					public void onFailure(Throwable caught) {
+						UtilsGXT3.alert("Error ",
+								"Impossible to retrieve parameters.");
+					}
+				});
+		Image img = new Image(PRELOAD_IMAGE);
+		img.setStyleName("workflow-parameters-preload");
+		vParameters.add(img, new VerticalLayoutData(-1, -1, new Margins()));
+		forceLayout();
+	}
+
+	/**
+	 * 
+	 */
+	protected void showForm() {
+		try {
+
+			// field widgets creation
+			for (Parameter p : operator.getOperatorParameters()) {
+				OperatorFieldWidget fieldWidget = new OperatorFieldWidget(p);
+				fieldWidgetsMap.put(p.getName(), fieldWidget);
+				vParameters.add(fieldWidget.getParameterLabel(),
+						new VerticalLayoutData(1, -1, new Margins()));
+			}
+
+			for (Parameter p : operator.getOperatorParameters()) {
+				if (p.isColumn() || p.isColumnList()) {
+					// search for the table parameter which it depends
+					String tabParamName = (p.isColumn() ? ((ColumnParameter) p)
+							.getReferredTabularParameterName()
+							: ((ColumnListParameter) p)
+									.getReferredTabularParameterName());
+
+					try {
+						// get the column field and the tabular field referred
+						TabularFld tabularField = (TabularFld) fieldWidgetsMap
+								.get(tabParamName).getField();
+						if (tabularField != null) {
+							AbstractFld field = fieldWidgetsMap
+									.get(p.getName()).getField();
+							tabularField.addChangeListener(field);
+						}
+					} catch (Exception e) {
+						e.printStackTrace();
+						UtilsGXT3
+								.alert("Error",
+										"Column parameter \""
+												+ p.getName()
+												+ " refers to a tabular parameter that doesn't exists ("
+												+ tabParamName + ")\"", null);
+					}
+				}
+			}
+
+			final TextButton submit = new TextButton("Start Computation");
+			submit.setToolTip(START_BUTTON_TOOLTIP);
+			submit.setIcon(DataMinerManager.resources.startComputation());
+			submit.getElement().getStyle().setMarginLeft(20, Unit.PX);
+			submit.getElement().getStyle().setMarginBottom(20, Unit.PX);
+
+			submit.addSelectHandler(new SelectHandler() {
+
+				@Override
+				public void onSelect(SelectEvent event) {
+					if (handler != null && parametersPanel.isValid()) {
+						String value = titleField.getValue();
+						String title = (value == null || value
+								.contentEquals("")) ? defaultComputationTitle
+								: value;
+						handler.startComputation(title, title); // TODO insert
+																// description
+					}
+
+				}
+			});
+
+			//new VerticalLayoutData(-1, -1, new Margins(0, 0, 20,20))
+			v.add(submit);
+			
+			forceLayout();
+		} catch (Throwable e) {
+			Log.error("Error in show form:" + e.getLocalizedMessage());
+			e.printStackTrace();
+		}
+	}
+
+	public void updateOperatorParametersValues() {
+		for (Map.Entry<String, OperatorFieldWidget> entry : fieldWidgetsMap
+				.entrySet()) {
+			OperatorFieldWidget fieldWidget = entry.getValue();
+			fieldWidget.updateOperatorParameterValue();
+		}
+	}
+
+	/**
+	 * @return the operator
+	 */
+	public Operator getOperator() {
+		return operator;
+	}
+
+	public void setHandler(ComputationParametersPanelHandler handler) {
+		this.handler = handler;
+	}
+
+	public void setDefaultComputationTitle() {
+		String name = this.operator.getName();
+		String date = DateTimeFormat
+				.getFormat(PredefinedFormat.DATE_TIME_SHORT).format(new Date());
+		defaultComputationTitle = name + "-" + date;
+	}
+
+}

src/main/java/org/gcube/portlets/user/dataminermanager/client/experimentArea/WorkflowOperatorPanel.java

@@ -1,252 +0,0 @@
-/**
- * 
- */
-package org.gcube.portlets.user.dataminermanager.client.experimentArea;
-
-import java.util.Date;
-import java.util.HashMap;
-import java.util.List;
-import java.util.Map;
-
-import org.gcube.portlets.user.dataminermanager.client.DataMinerManager;
-import org.gcube.portlets.user.dataminermanager.client.bean.Operator;
-import org.gcube.portlets.user.dataminermanager.client.bean.parameters.ColumnListParameter;
-import org.gcube.portlets.user.dataminermanager.client.bean.parameters.ColumnParameter;
-import org.gcube.portlets.user.dataminermanager.client.bean.parameters.Parameter;
-import org.gcube.portlets.user.dataminermanager.client.form.AbstractFld;
-import org.gcube.portlets.user.dataminermanager.client.form.OperatorFieldWidget;
-import org.gcube.portlets.user.dataminermanager.client.form.TabularFld;
-import org.gcube.portlets.user.dataminermanager.client.rpc.DataMinerPortletServiceAsync;
-import org.gcube.portlets.user.dataminermanager.client.util.UtilsGXT3;
-
-import com.google.gwt.core.client.GWT;
-import com.google.gwt.dom.client.Style.Unit;
-import com.google.gwt.i18n.client.DateTimeFormat;
-import com.google.gwt.i18n.client.DateTimeFormat.PredefinedFormat;
-import com.google.gwt.resources.client.ImageResource;
-import com.google.gwt.user.client.rpc.AsyncCallback;
-import com.google.gwt.user.client.ui.HTML;
-import com.google.gwt.user.client.ui.Image;
-import com.sencha.gxt.widget.core.client.button.TextButton;
-import com.sencha.gxt.widget.core.client.container.HorizontalLayoutContainer;
-import com.sencha.gxt.widget.core.client.container.SimpleContainer;
-import com.sencha.gxt.widget.core.client.container.VerticalLayoutContainer;
-import com.sencha.gxt.widget.core.client.event.SelectEvent;
-import com.sencha.gxt.widget.core.client.event.SelectEvent.SelectHandler;
-import com.sencha.gxt.widget.core.client.form.FieldLabel;
-import com.sencha.gxt.widget.core.client.form.FieldSet;
-import com.sencha.gxt.widget.core.client.form.FormPanel;
-import com.sencha.gxt.widget.core.client.form.TextField;
-
-/**
- * @author ceras
- *
- */
-public class WorkflowOperatorPanel extends SimpleContainer {
-
-	/**
-	 * @author ceras
-	 *
-	 */
-	public interface WorkflowOperatorPanelHandler {
-		public void startComputation(String computationTitle, String computationDescription);
-	}
-
-	private static final String START_BUTTON_TOOLTIP = "Start Computation";
-
-	private static final ImageResource PRELOAD_IMAGE = DataMinerManager.resources.loaderBig();
-
-	private VerticalLayoutContainer v;
-	private Operator operator;
-	private FormPanel parametersPanel;
-	private FieldSet parametersFieldSet;
-	private Map<String, OperatorFieldWidget> fieldWidgetsMap = new HashMap<String, OperatorFieldWidget>();
-	//private Map<Parameter, String> parameterValues = new HashMap<Parameter, String>();
-	private WorkflowOperatorPanelHandler handler=null;
-	private TextField titleField;
-
-	private String defaultComputationTitle;
-
-
-	public WorkflowOperatorPanel(DataMinerPortletServiceAsync service, Operator operator, WorkflowOperatorPanelHandler handler) {
-		this(operator);
-		this.setHandler(handler);
-	}
-	/**
-	 * 
-	 */
-	public WorkflowOperatorPanel(Operator operator) {
-		super();
-		v=new VerticalLayoutContainer();
-		add(v);
-		
-		this.operator = operator;
-		
-		this.defaultComputationTitle = getDefaultComputationTitle();
-		//lc.setLayout(new FitLayout());
-		
-		addStyleName("workflow");
-
-		Image img = new Image(GWT.getModuleBaseURL()+"../images/operators/"+(operator.hasImage() ? operator.getId() : "DEFAULT_IMAGE")+".png");
-		img.addStyleName("workflow-icon");
-		v.add(img);
-
-		HTML title = new HTML(operator.getName());
-		title.addStyleName("workflow-title");
-		v.add(title);
-
-		String descr = operator.getDescription();
-		descr = (descr==null || descr.contentEquals("")) ? "no-description" : operator.getDescription();
-		HTML description = new HTML(descr);
-		description.addStyleName("workflow-description");
-		v.add(description);
-		
-		addTitleField();
-		
-		parametersPanel =  new FormPanel(){
-				@Override
-				public boolean isValid(boolean preventMark) {
-					boolean flag = super.isValid(preventMark);
-
-					if (flag) {
-						for (Map.Entry<String, OperatorFieldWidget> entry : fieldWidgetsMap.entrySet()) {
-							OperatorFieldWidget fieldWidget = entry.getValue();
-							flag = flag && fieldWidget.isValid();
-						}
-					}
-					return flag;
-				}
-
-				
-			};
-		parametersPanel.setBorders(false);
-		
-		//parametersPanel.getElement().getStyle().setMargin(20, px);
-		parametersFieldSet = new FieldSet();
-		parametersFieldSet.setHeadingText("Parameters");
-		parametersPanel.add(parametersFieldSet);
-		
-		v.add(parametersPanel);
-
-		loadOperatorParameters();
-		
-	}
-
-	/**
-	 * 
-	 */
-	private void addTitleField() {
-		HorizontalLayoutContainer hp = new HorizontalLayoutContainer();
-		hp.add(new HTML("<div style='margin-left:30px; margin-right:10px; margin-top:5px'>Computation Title: </div>"));
-		titleField = new TextField();
-		titleField.setWidth(250);
-		titleField.setValue(this.defaultComputationTitle);
-		FieldLabel titleLabel=new FieldLabel(titleField,"Computation Title");
-		hp.add(titleLabel);
-		v.add(hp);
-	}
-	
-	/**
-	 * @param parametersPanel
-	 */
-	private void loadOperatorParameters() {
-		DataMinerManager.getService().getParameters(operator, new AsyncCallback<List<Parameter>>() {
-			@Override
-			public void onSuccess(List<Parameter> result) {
-				operator.setOperatorParameters(result);
-				parametersFieldSet.clear();
-				showForm();
-			}
-			
-			@Override
-			public void onFailure(Throwable caught) {
-				UtilsGXT3.alert("Error ", "Impossible to retrieve parameters.");
-			}
-		});
-		Image img = new Image(PRELOAD_IMAGE);
-		img.setStyleName("workflow-parameters-preload");
-		parametersFieldSet.add(img);
-	}
-
-	/**
-	 * 
-	 */
-	protected void showForm() {
-		// field widgets creation
-		for (Parameter p : operator.getOperatorParameters()) {
-			OperatorFieldWidget fieldWidget = new OperatorFieldWidget(p);
-			fieldWidgetsMap.put(p.getName(), fieldWidget);
-			parametersFieldSet.add(fieldWidget);
-		}
-		
-		for (Parameter p: operator.getOperatorParameters()) {
-			if (p.isColumn() || p.isColumnList()) {
-				// search for the table parameter which it depends
-				String tabParamName = (p.isColumn()
-						? ((ColumnParameter)p).getReferredTabularParameterName()
-						: ((ColumnListParameter)p).getReferredTabularParameterName());
-				
-				try {
-					// get the column field and the tabular field referred
-					TabularFld tabularField = (TabularFld)fieldWidgetsMap.get(tabParamName).getField();
-					AbstractFld field = fieldWidgetsMap.get(p.getName()).getField();
-					tabularField.addChangeListener(field);				
-				} catch (Exception e) {
-					e.printStackTrace();
-					UtilsGXT3.alert("Error", "Column parameter \""+p.getName()+" refers to a tabular parameter that doesn't exists ("+tabParamName+")\"", null);
-				}
-			}
-		}
-		
-		
-		final TextButton submit = new TextButton("Start Computation");
-		submit.setToolTip(START_BUTTON_TOOLTIP);
-		submit.setIcon(DataMinerManager.resources.startComputation());
-		submit.getElement().getStyle().setMarginLeft(20,Unit.PX);
-		submit.getElement().getStyle().setMarginBottom(20, Unit.PX);
-
-		submit.addSelectHandler(new SelectHandler() {
-			
-			@Override
-			public void onSelect(SelectEvent event) {
-				if (handler!=null && parametersPanel.isValid()) {
-					String value = titleField.getValue();
-					String title = (value==null || value.contentEquals("")) ? defaultComputationTitle : value;
-					handler.startComputation(title, title); // TODO insert description
-				}
-				
-			}
-		});
-	
-		v.add(submit);
-		forceLayout();
-		
-		parametersPanel.forceLayout();
-	}
-	
-	public void updateOperatorParametersValues() {
-		for (Map.Entry<String, OperatorFieldWidget> entry : fieldWidgetsMap.entrySet()) {
-			OperatorFieldWidget fieldWidget = entry.getValue();
-			fieldWidget.updateOperatorParameterValue();
-		}
-	}
-	
-	/**
-	 * @return the operator
-	 */
-	public Operator getOperator() {
-		return operator;
-	}
-	
-	public void setHandler(WorkflowOperatorPanelHandler handler) {
-		this.handler = handler;
-	}
-	
-	public String getDefaultComputationTitle() {
-		String name = this.operator.getName();
-		//String date = DateTimeFormat.getShortDateTimeFormat().format(new Date());
-		String date = DateTimeFormat.getFormat(PredefinedFormat.DATE_TIME_SHORT).format(new Date());
-		
-		return name+"-"+date;
-	}
-}

src/main/java/org/gcube/portlets/user/dataminermanager/client/experimentArea/WorkflowPanel.java

@@ -6,9 +6,8 @@ package org.gcube.portlets.user.dataminermanager.client.experimentArea;
 import org.gcube.portlets.user.dataminermanager.client.DataMinerManager;
 import org.gcube.portlets.user.dataminermanager.client.bean.Operator;
 import org.gcube.portlets.user.dataminermanager.client.common.EventBusProvider;
-import org.gcube.portlets.user.dataminermanager.client.events.EmptyComputationPanelEvent;
 import org.gcube.portlets.user.dataminermanager.client.events.ResubmitComputationEvent;
-import org.gcube.portlets.user.dataminermanager.client.experimentArea.WorkflowOperatorPanel.WorkflowOperatorPanelHandler;
+import org.gcube.portlets.user.dataminermanager.client.events.StartComputationEvent;
 
 import com.allen_sauer.gwt.log.client.Log;
 import com.sencha.gxt.widget.core.client.TabItemConfig;
@@ -24,7 +23,7 @@ public class WorkflowPanel extends TabPanel {
 
 	public static final String DEFAULT_OPERATOR = "AQUAMAPS_SUITABLE";
 
-	private WorkflowOperatorPanel workflowOperatorPanel;
+   
 	private ComputationExecutionPanel computationExecutionPanel;
 	private ComputationPanel computationPanel;
 
@@ -44,7 +43,6 @@ public class WorkflowPanel extends TabPanel {
 	}
 
 	private void create() {
-		workflowOperatorPanel = null;
 
 		TabItemConfig tabWorkFlowLcItemConf = new TabItemConfig(
 				".: Computation", false);
@@ -52,13 +50,14 @@ public class WorkflowPanel extends TabPanel {
 				.folderExplore());
 		computationPanel = new ComputationPanel();
 		computationPanel
-				.addEmptyComputationPanelEventHandler(new EmptyComputationPanelEvent.EmptyComputationPanelEventHandler() {
+				.addStartComputationEventHandler(new StartComputationEvent.StartComputationEventHandler() {
 
 					@Override
-					public void onEmpty(EmptyComputationPanelEvent event) {
-						Log.debug("EmptyComputationPanelEvent Received");
-						workflowOperatorPanel = null;
-						
+					public void onStart(StartComputationEvent event) {
+						Log.debug("StartComputationEvent Received:"+event);
+						startComputation(event.getOp(), event.getComputationTitle(),
+								event.getComputationDescription()); 
+
 					}
 				});
 		add(computationPanel, tabWorkFlowLcItemConf);
@@ -93,35 +92,22 @@ public class WorkflowPanel extends TabPanel {
 	 * @param operator
 	 * 
 	 */
-	private void startComputation(String computationTitle,
+	private void startComputation(Operator op, String computationTitle,
 			String computationDescription) {
-
-		if (workflowOperatorPanel != null) {
-			forceLayout();
-			workflowOperatorPanel.updateOperatorParametersValues();
-			Operator op = workflowOperatorPanel.getOperator();
-
-			computationExecutionPanel.startNewComputation(op, computationTitle,
-					computationDescription);
-		}
+		setActiveWidget(computationExecutionPanel);
+		computationExecutionPanel.startNewComputation(op, computationTitle,
+				computationDescription);
+		
+		
 	}
 
 	public void addOperator(Operator op) {
 		setActiveWidget(computationPanel);
-
-		workflowOperatorPanel = new WorkflowOperatorPanel(op);
-		workflowOperatorPanel.setHandler(new WorkflowOperatorPanelHandler() {
-			@Override
-			public void startComputation(String computationTitle,
-					String computationDescription) {
-				WorkflowPanel.this.startComputation(computationTitle,
-						computationDescription);
-				setActiveWidget(computationExecutionPanel);
-			}
-		});
-
-		computationPanel.addWorkflowOperatorPanel(workflowOperatorPanel);
+		computationPanel.addOperator(op);
 
 	}
-
+	
+	
+	
+	
 }

src/main/java/org/gcube/portlets/user/dataminermanager/client/form/StringFld.java

@@ -1,55 +0,0 @@
-/**
- * 
- */
-package org.gcube.portlets.user.dataminermanager.client.form;
-
-import org.gcube.portlets.user.dataminermanager.client.bean.parameters.ObjectParameter;
-import org.gcube.portlets.user.dataminermanager.client.bean.parameters.Parameter;
-
-import com.google.gwt.user.client.ui.Widget;
-import com.sencha.gxt.widget.core.client.form.TextField;
-
-/**
- * 
- * @author Giancarlo Panichi
- * email: <a href="mailto:g.panichi@isti.cnr.it">g.panichi@isti.cnr.it</a> 
- *
- */
-public class StringFld extends AbstractFld {
-
-	private TextField textField;
-
-	/**
-	 * @param parameter
-	 */
-	public StringFld(Parameter parameter) {
-		super(parameter);
-
-		textField = new TextField();
-		ObjectParameter p = (ObjectParameter) parameter;
-		textField.setValue(p.getDefaultValue());
-
-		if (p.getDefaultValue() == null)
-			textField.setAllowBlank(false);
-		if (p.getDescription() != null)
-			textField.setToolTip(p.getDescription());
-
-	}
-
-	/**
-	 * 
-	 */
-	@Override
-	public String getValue() {
-		return textField.getValue();
-	}
-
-	/**
-	 * 
-	 */
-	@Override
-	public Widget getWidget() {
-		return textField;
-	}
-
-}

src/main/java/org/gcube/portlets/user/dataminermanager/client/parametersfield/AbstractFld.java

@@ -1,14 +1,16 @@
 /**
  * 
  */
-package org.gcube.portlets.user.dataminermanager.client.form;
+package org.gcube.portlets.user.dataminermanager.client.parametersfield;
 
 import org.gcube.portlets.user.dataminermanager.client.bean.parameters.Parameter;
 
 import com.google.gwt.user.client.ui.Widget;
 
 /**
- * @author ceras
+ * 
+ * @author Giancarlo Panichi
+ * email: <a href="mailto:g.panichi@isti.cnr.it">g.panichi@isti.cnr.it</a> 
  *
  */
 public abstract class AbstractFld {	

src/main/java/org/gcube/portlets/user/dataminermanager/client/parametersfield/BooleanFld.java

@@ -1,7 +1,7 @@
 /**
  * 
  */
-package org.gcube.portlets.user.dataminermanager.client.form;
+package org.gcube.portlets.user.dataminermanager.client.parametersfield;
 
 import org.gcube.portlets.user.dataminermanager.client.bean.parameters.ObjectParameter;
 import org.gcube.portlets.user.dataminermanager.client.bean.parameters.Parameter;

src/main/java/org/gcube/portlets/user/dataminermanager/client/parametersfield/ColumnFld.java

@@ -1,7 +1,7 @@
 /**
  * 
  */
-package org.gcube.portlets.user.dataminermanager.client.form;
+package org.gcube.portlets.user.dataminermanager.client.parametersfield;
 
 import java.util.ArrayList;
 

src/main/java/org/gcube/portlets/user/dataminermanager/client/parametersfield/ColumnListFld.java

@@ -1,7 +1,7 @@
 /**
  * 
  */
-package org.gcube.portlets.user.dataminermanager.client.form;
+package org.gcube.portlets.user.dataminermanager.client.parametersfield;
 
 import java.util.ArrayList;
 import java.util.List;

src/main/java/org/gcube/portlets/user/dataminermanager/client/parametersfield/DoubleFld.java

@@ -1,4 +1,4 @@
-package org.gcube.portlets.user.dataminermanager.client.form;
+package org.gcube.portlets.user.dataminermanager.client.parametersfield;
 
 import org.gcube.portlets.user.dataminermanager.client.bean.parameters.ObjectParameter;
 import org.gcube.portlets.user.dataminermanager.client.bean.parameters.Parameter;

src/main/java/org/gcube/portlets/user/dataminermanager/client/parametersfield/EnumFld.java

@@ -1,7 +1,7 @@
 /**
  * 
  */
-package org.gcube.portlets.user.dataminermanager.client.form;
+package org.gcube.portlets.user.dataminermanager.client.parametersfield;
 
 import org.gcube.portlets.user.dataminermanager.client.bean.parameters.EnumParameter;
 import org.gcube.portlets.user.dataminermanager.client.bean.parameters.Parameter;

src/main/java/org/gcube/portlets/user/dataminermanager/client/parametersfield/FileFld.java

@@ -1,7 +1,7 @@
 /**
  * 
  */
-package org.gcube.portlets.user.dataminermanager.client.form;
+package org.gcube.portlets.user.dataminermanager.client.parametersfield;
 
 import java.util.ArrayList;
 import java.util.Arrays;

src/main/java/org/gcube/portlets/user/dataminermanager/client/parametersfield/FloatFld.java

@@ -1,4 +1,4 @@
-package org.gcube.portlets.user.dataminermanager.client.form;
+package org.gcube.portlets.user.dataminermanager.client.parametersfield;
 
 import org.gcube.portlets.user.dataminermanager.client.bean.parameters.ObjectParameter;
 import org.gcube.portlets.user.dataminermanager.client.bean.parameters.Parameter;

src/main/java/org/gcube/portlets/user/dataminermanager/client/parametersfield/IntFld.java

@@ -1,5 +1,5 @@
 
-package org.gcube.portlets.user.dataminermanager.client.form;
+package org.gcube.portlets.user.dataminermanager.client.parametersfield;
 
 import org.gcube.portlets.user.dataminermanager.client.bean.parameters.ObjectParameter;
 import org.gcube.portlets.user.dataminermanager.client.bean.parameters.Parameter;

src/main/java/org/gcube/portlets/user/dataminermanager/client/parametersfield/ListIntFld.java

@@ -1,7 +1,7 @@
 /**
  * 
  */
-package org.gcube.portlets.user.dataminermanager.client.form;
+package org.gcube.portlets.user.dataminermanager.client.parametersfield;
 
 import java.util.ArrayList;
 import java.util.List;

src/main/java/org/gcube/portlets/user/dataminermanager/client/parametersfield/ListStringFld.java

@@ -1,7 +1,7 @@
 /**
  * 
  */
-package org.gcube.portlets.user.dataminermanager.client.form;
+package org.gcube.portlets.user.dataminermanager.client.parametersfield;
 
 import java.util.ArrayList;
 import java.util.List;

src/main/java/org/gcube/portlets/user/dataminermanager/client/parametersfield/OpenTableButton.java

@@ -1,7 +1,7 @@
 /**
  * 
  */
-package org.gcube.portlets.user.dataminermanager.client.form;
+package org.gcube.portlets.user.dataminermanager.client.parametersfield;
 
 import org.gcube.portlets.user.dataminermanager.client.DataMinerManager;
 import org.gcube.portlets.user.dataminermanager.shared.data.TableItemSimple;

src/main/java/org/gcube/portlets/user/dataminermanager/client/parametersfield/OperatorFieldWidget.java

@@ -1,35 +1,27 @@
 /**
  * 
  */
-package org.gcube.portlets.user.dataminermanager.client.form;
+package org.gcube.portlets.user.dataminermanager.client.parametersfield;
 
 import org.gcube.portlets.user.dataminermanager.client.bean.parameters.ListParameter;
 import org.gcube.portlets.user.dataminermanager.client.bean.parameters.ObjectParameter;
 import org.gcube.portlets.user.dataminermanager.client.bean.parameters.Parameter;
 
 import com.allen_sauer.gwt.log.client.Log;
-import com.google.gwt.user.client.ui.HTML;
-import com.sencha.gxt.core.client.util.Margins;
-import com.sencha.gxt.widget.core.client.container.HorizontalLayoutContainer;
-import com.sencha.gxt.widget.core.client.container.HorizontalLayoutContainer.HorizontalLayoutData;
-import com.sencha.gxt.widget.core.client.container.MarginData;
-import com.sencha.gxt.widget.core.client.container.SimpleContainer;
 import com.sencha.gxt.widget.core.client.form.FieldLabel;
 
 /**
- * @author ceras
+ * 
+ * @author Giancarlo Panichi email: <a
+ *         href="mailto:g.panichi@isti.cnr.it">g.panichi@isti.cnr.it</a>
  *
  */
-public class OperatorFieldWidget extends SimpleContainer {
+public class OperatorFieldWidget {
 
 	private Parameter parameter;
 
 	private AbstractFld field;
-	private HorizontalLayoutContainer horiz;
-
-	// private Field generalParameterField;
-	// private SimpleComboBox<String> inputDataParameterField;
-	// private TextField<String> outputDataParameterField;
+	private FieldLabel parameterLabel;
 
 	/**
 	 * 
@@ -37,10 +29,8 @@ public class OperatorFieldWidget extends SimpleContainer {
 	public OperatorFieldWidget(Parameter p) {
 		super();
 		this.parameter = p;
-		horiz = new HorizontalLayoutContainer();
-		
+
 		try {
-			// this.setStyleAttribute("margin", "10px");
 			if (p.isObject())
 				field = createObjectField((ObjectParameter) p);
 			else if (p.isEnum())
@@ -58,22 +48,21 @@ public class OperatorFieldWidget extends SimpleContainer {
 			else if (p.isFile())
 				field = new FileFld(p);
 
-			FieldLabel label = new FieldLabel(field.getWidget(), p.getName());
-			horiz.add(label, new HorizontalLayoutData(-1, 1, new Margins(0)));
-			
-			if (p.getDescription() != null) {
-				HTML descr = new HTML(p.getDescription());
-				descr.addStyleName("workflow-fieldDescription");
-				horiz.add(descr);
+			if (field == null) {
+				parameterLabel = new FieldLabel(null, p.getName());
+				parameterLabel.setLabelWidth(200);
+				parameterLabel.setLabelWordWrap(true);
+
+			} else {
+				parameterLabel = new FieldLabel(field.getWidget(), p.getName());
+				parameterLabel.setLabelWidth(200);
+				parameterLabel.setLabelWordWrap(true);
 			}
-			
 		} catch (Throwable e) {
 			Log.error("Error: " + e.getLocalizedMessage());
 			e.printStackTrace();
-			horiz.add(new FieldLabel(new HTML("Error in field retrieving!"),p.getName()));
 		}
-		
-		add(horiz, new MarginData(0));
+
 	}
 
 	/**
@@ -91,6 +80,10 @@ public class OperatorFieldWidget extends SimpleContainer {
 		return getFieldValue();
 	}
 
+	public FieldLabel getParameterLabel() {
+		return parameterLabel;
+	}
+
 	/**
 	 * @param p
 	 * @return

src/main/java/org/gcube/portlets/user/dataminermanager/client/parametersfield/StringFld.java

@@ -0,0 +1,87 @@
+/**
+ * 
+ */
+package org.gcube.portlets.user.dataminermanager.client.parametersfield;
+
+import org.gcube.portlets.user.dataminermanager.client.bean.parameters.ObjectParameter;
+import org.gcube.portlets.user.dataminermanager.client.bean.parameters.Parameter;
+
+import com.google.gwt.user.client.ui.Widget;
+import com.sencha.gxt.core.client.util.Margins;
+import com.sencha.gxt.core.client.util.Padding;
+import com.sencha.gxt.widget.core.client.container.BoxLayoutContainer.BoxLayoutData;
+import com.sencha.gxt.widget.core.client.container.BoxLayoutContainer.BoxLayoutPack;
+import com.sencha.gxt.widget.core.client.container.HBoxLayoutContainer;
+import com.sencha.gxt.widget.core.client.container.HorizontalLayoutContainer;
+import com.sencha.gxt.widget.core.client.container.HorizontalLayoutContainer.HorizontalLayoutData;
+import com.sencha.gxt.widget.core.client.container.HtmlLayoutContainer;
+import com.sencha.gxt.widget.core.client.container.SimpleContainer;
+import com.sencha.gxt.widget.core.client.form.TextField;
+
+/**
+ * 
+ * @author Giancarlo Panichi email: <a
+ *         href="mailto:g.panichi@isti.cnr.it">g.panichi@isti.cnr.it</a>
+ *
+ */
+public class StringFld extends AbstractFld {
+
+	private SimpleContainer simpleContainer;
+	private HorizontalLayoutContainer horiz;
+	private TextField textField;
+
+	/**
+	 * @param parameter
+	 */
+	public StringFld(Parameter parameter) {
+		super(parameter);
+		simpleContainer=new SimpleContainer();
+		HBoxLayoutContainer horiz = new HBoxLayoutContainer();
+		horiz.setPack(BoxLayoutPack.START);
+		horiz.setEnableOverflow(false);
+
+		ObjectParameter p = (ObjectParameter) parameter;
+		
+		textField = new TextField();
+		textField.setValue(p.getDefaultValue());
+
+		if (p.getDefaultValue() == null)
+			textField.setAllowBlank(false);
+
+		HtmlLayoutContainer descr;
+
+		if (p.getDescription() == null) {
+			descr=new HtmlLayoutContainer("<p style='margin-left:5px;'></p>");
+			descr.addStyleName("workflow-fieldDescription");
+		
+		} else {
+			textField.setToolTip(p.getDescription());
+			descr=new HtmlLayoutContainer("<p style='margin-left:5px;'>"+p.getDescription()+"</p>");
+			descr.addStyleName("workflow-fieldDescription");
+		}
+		
+		horiz.add(textField,new BoxLayoutData(new Margins()));
+		horiz.add(descr,new BoxLayoutData(new Margins()));
+		
+		/*horiz.add(textField, new HorizontalLayoutData(-1,-1,new Margins()));
+		horiz.add(descr,new HorizontalLayoutData(1,-1,new Margins()));*/
+		simpleContainer.add(horiz);
+	}
+
+	/**
+	 * 
+	 */
+	@Override
+	public String getValue() {
+		return textField.getValue();
+	}
+
+	/**
+	 * 
+	 */
+	@Override
+	public Widget getWidget() {
+		return simpleContainer;
+	}
+
+}

src/main/java/org/gcube/portlets/user/dataminermanager/client/parametersfield/TabularFld.java

@@ -1,7 +1,7 @@
 /**
  * 
  */
-package org.gcube.portlets.user.dataminermanager.client.form;
+package org.gcube.portlets.user.dataminermanager.client.parametersfield;
 
 import java.util.ArrayList;
 import java.util.Arrays;

src/main/java/org/gcube/portlets/user/dataminermanager/client/parametersfield/TabularListFld.java

@@ -1,7 +1,7 @@
 /**
  * 
  */
-package org.gcube.portlets.user.dataminermanager.client.form;
+package org.gcube.portlets.user.dataminermanager.client.parametersfield;
 
 import java.util.ArrayList;
 import java.util.List;

src/main/java/org/gcube/portlets/user/dataminermanager/client/rpc/DataMinerPortletService.java

@@ -1,13 +1,9 @@
 package org.gcube.portlets.user.dataminermanager.client.rpc;
 
-import java.util.Date;
 import java.util.List;
 import java.util.Map;
 
 import org.gcube.portlets.user.dataminermanager.client.bean.ComputationStatus;
-import org.gcube.portlets.user.dataminermanager.client.bean.CsvMetadata;
-import org.gcube.portlets.user.dataminermanager.client.bean.FileMetadata;
-import org.gcube.portlets.user.dataminermanager.client.bean.ImportStatus;
 import org.gcube.portlets.user.dataminermanager.client.bean.Operator;
 import org.gcube.portlets.user.dataminermanager.client.bean.OperatorsClassification;
 import org.gcube.portlets.user.dataminermanager.client.bean.ResourceItem;
@@ -32,22 +28,7 @@ import com.google.gwt.user.client.rpc.RemoteServiceRelativePath;
 @RemoteServiceRelativePath("dataminerman")
 public interface DataMinerPortletService extends RemoteService {
 
-	public UserInfo hello() throws ServiceException;
-
-	// get all operators and categories
-	public List<OperatorsClassification> getOperatorsClassifications()
-			throws Exception;
-
-	// get parameters for a given operator
-	public List<Parameter> getParameters(Operator operator) throws Exception;
-
-	public ComputationId startComputation(Operator op, String computationTitle,
-			String computationDescription) throws Exception;
-
-	// get a status for a computation
-	public ComputationStatus getComputationStatus(ComputationId computationId)
-			throws Exception;
-
+	
 	// get tables info belongs to a given templates set (for relative user)
 	public List<TableItemSimple> getTableItems(List<String> templates)
 			throws Exception;
@@ -59,17 +40,7 @@ public interface DataMinerPortletService extends RemoteService {
 
 	public Map<String, String> getParametersMapByComputationId(ComputationId computationId) throws ServiceException;
 
-	public String importTable(CsvMetadata csvMetadata) throws Exception;
-
-	public CsvMetadata getCsvMetadataFromCsvImporterWizard() throws Exception;
-
-	public List<ImportStatus> getImportsStatus(Date todayDate)
-			throws ServiceException;
-
-	// get a status for an import
-	public ImportStatus getImportStatusById(String id) throws ServiceException;
-
-
+	
 	public Map<String, Resource> getMapFromMapResource(MapResource mapResource)
 			throws Exception;
 
@@ -86,12 +57,28 @@ public interface DataMinerPortletService extends RemoteService {
 	public String exportResource(String folderId, String fileName,
 			ResourceItem resourceItem) throws Exception;
 
+	
+	/**
+	 * Dataminer
+	 * 
+	 */
+	public UserInfo hello() throws ServiceException;
+
+	public List<OperatorsClassification> getOperatorsClassifications()
+			throws Exception;
+
+	public List<Parameter> getParameters(Operator operator) throws Exception;
+
+	public ComputationId startComputation(Operator op, String computationTitle,
+			String computationDescription) throws Exception;
+
+	public ComputationStatus getComputationStatus(ComputationId computationId)
+			throws Exception;
+
+	
 	public ComputationId resubmit(ComputationId computationId) throws ServiceException;
 
-	public FileMetadata getFilePathFromImporterWizard() throws Exception;
-
-	public String importFile(FileMetadata fileMetadata) throws Exception;
-
+	
 	public TableItemSimple retrieveTableInformation(Item item)
 			throws ServiceException;
 

src/main/java/org/gcube/portlets/user/dataminermanager/client/rpc/DataMinerPortletServiceAsync.java

@@ -36,21 +36,6 @@ public interface DataMinerPortletServiceAsync {
 	public static DataMinerPortletServiceAsync INSTANCE = (DataMinerPortletServiceAsync) GWT
 			.create(DataMinerPortletService.class);
 
-	
-	void hello(AsyncCallback<UserInfo> callback);
-
-	void getOperatorsClassifications(
-			AsyncCallback<List<OperatorsClassification>> callback);
-
-	void getParameters(Operator operator,
-			AsyncCallback<List<Parameter>> callback);
-
-	void startComputation(Operator op, String computationTitle,
-			String computationDescription,
-			AsyncCallback<ComputationId> asyncCallback);
-
-	void getComputationStatus(ComputationId computationId,
-			AsyncCallback<ComputationStatus> asyncCallback);
 
 	void getTableItems(List<String> templates,
 			AsyncCallback<List<TableItemSimple>> callback);
@@ -62,13 +47,6 @@ public interface DataMinerPortletServiceAsync {
 	void getResourceByComputationId(ComputationId computationId,
 			AsyncCallback<Resource> callback);
 
-	void importTable(CsvMetadata csvMetadata, AsyncCallback<String> callback);
-
-	void getImportsStatus(Date todayDate,
-			AsyncCallback<List<ImportStatus>> callback);
-
-	void getImportStatusById(String id, AsyncCallback<ImportStatus> callback);
-
 	void getMapFromMapResource(MapResource mapResource,
 			AsyncCallback<Map<String, Resource>> callback);
 
@@ -82,17 +60,31 @@ public interface DataMinerPortletServiceAsync {
 
 	void removeImport(String id, AsyncCallback<Void> callback);
 
-	void getCsvMetadataFromCsvImporterWizard(AsyncCallback<CsvMetadata> callback);
-
 	void exportResource(String folderId, String fileName,
 			ResourceItem resourceItem, AsyncCallback<String> callback);
 
+	
+	/**
+	 * DataMiner 
+	 *
+	 */
+	void hello(AsyncCallback<UserInfo> callback);
+
+	void getOperatorsClassifications(
+			AsyncCallback<List<OperatorsClassification>> callback);
+
+	void getParameters(Operator operator,
+			AsyncCallback<List<Parameter>> callback);	
+	
+	void startComputation(Operator op, String computationTitle,
+			String computationDescription,
+			AsyncCallback<ComputationId> asyncCallback);
+
+	void getComputationStatus(ComputationId computationId,
+			AsyncCallback<ComputationStatus> asyncCallback);
+	
 	void resubmit(ComputationId computationId, AsyncCallback<ComputationId> callback);
 
-	void getFilePathFromImporterWizard(AsyncCallback<FileMetadata> callback);
-
-	void importFile(FileMetadata fileMetadata, AsyncCallback<String> callback);
-
 	void retrieveTableInformation(Item item, AsyncCallback<TableItemSimple> callback);
 
 	void getDataMinerWorkArea(AsyncCallback<DataMinerWorkArea> asyncCallback);

src/main/java/org/gcube/portlets/user/dataminermanager/dataminermanager.gwt.xml

@@ -47,19 +47,19 @@
 	<entry-point
 		class='org.gcube.portlets.user.dataminermanager.client.DataMinerManager' />
 	
-	<!-- 
+
 	<set-property name="log_ConsoleLogger" value="ENABLED" /> <set-property 
 		name="log_DivLogger" value="ENABLED" /> <set-property name="log_GWTLogger" 
 		value="ENABLED" /> <set-property name="log_SystemLogger" value="ENABLED" 
-		/>  -->
+		/> 
 	<!-- Not in GWT 2.6 <set-property name="log_FirebugLogger" value="ENABLED" 
 		/> -->
 
-    
+  	<!-- 
 	<set-property name="log_ConsoleLogger" value="DISABLED" />
 	<set-property name="log_DivLogger" value="DISABLED" />
 	<set-property name="log_GWTLogger" value="DISABLED" />
-	<set-property name="log_SystemLogger" value="DISABLED" /> 
+	<set-property name="log_SystemLogger" value="DISABLED" />  -->
 	<!-- Not in GWT 2.6 <set-property name="log_FirebugLogger" value="DISABLED" 
 		/> -->
 	

src/main/java/org/gcube/portlets/user/dataminermanager/server/DataMinerManagerServiceImpl.java

@@ -3,7 +3,6 @@ package org.gcube.portlets.user.dataminermanager.server;
 import java.io.InputStream;
 import java.net.URL;
 import java.util.ArrayList;
-import java.util.Date;
 import java.util.LinkedHashMap;
 import java.util.List;
 import java.util.Map;
@@ -20,10 +19,6 @@ import org.gcube.common.homelibrary.home.workspace.WorkspaceItem;
 import org.gcube.common.homelibrary.home.workspace.exceptions.ItemAlreadyExistException;
 import org.gcube.common.homelibrary.util.WorkspaceUtil;
 import org.gcube.portlets.user.dataminermanager.client.bean.ComputationStatus;
-import org.gcube.portlets.user.dataminermanager.client.bean.ComputationStatus.Status;
-import org.gcube.portlets.user.dataminermanager.client.bean.CsvMetadata;
-import org.gcube.portlets.user.dataminermanager.client.bean.FileMetadata;
-import org.gcube.portlets.user.dataminermanager.client.bean.ImportStatus;
 import org.gcube.portlets.user.dataminermanager.client.bean.Operator;
 import org.gcube.portlets.user.dataminermanager.client.bean.OperatorsClassification;
 import org.gcube.portlets.user.dataminermanager.client.bean.ResourceItem;
@@ -327,106 +322,7 @@ public class DataMinerManagerServiceImpl extends RemoteServiceServlet implements
 		}
 	}
 
-	@Override
-	public String importTable(CsvMetadata csvMetadata) throws Exception {
-		try {
-			HttpSession session = this.getThreadLocalRequest().getSession();
-			ASLSession aslSession = SessionUtil.getASLSession(session);
 
-			return "1";
-		} catch (Exception e) {
-			logger.error(e.getLocalizedMessage(), e);
-			// e.printStackTrace();
-			throw (e);
-		}
-	}
-
-	@Override
-	public String importFile(FileMetadata fileMetadata) throws Exception {
-		try {
-			HttpSession session = this.getThreadLocalRequest().getSession();
-			ASLSession aslSession = SessionUtil.getASLSession(session);
-
-			String id = "";
-
-			return id;
-		} catch (Exception e) {
-			logger.error(e.getLocalizedMessage(), e);
-			throw (e);
-		}
-	}
-
-	@Override
-	public CsvMetadata getCsvMetadataFromCsvImporterWizard() throws Exception {
-		HttpSession httpSession = this.getThreadLocalRequest().getSession();
-		//CSVParserConfiguration csvParserConfiguration = (CSVParserConfiguration) httpSession
-		//		.getAttribute("csvParserConfiguration");
-		//String csvImportFilePath = (String) httpSession
-		//		.getAttribute("csvImportFilePath");
-		//boolean hasHeader = csvParserConfiguration.isHasHeader();
-		//String delimiter = "" + csvParserConfiguration.getDelimiter();
-		//String comment = "" + csvParserConfiguration.getComment();
-
-		//return new CsvMetadata(hasHeader, csvImportFilePath, delimiter, comment);
-		return null;
-	}
-
-	@Override
-	public FileMetadata getFilePathFromImporterWizard() throws Exception {
-		FileMetadata result;
-		// logger.info("getFilePathFromImporterWizard");
-		HttpSession httpSession = this.getThreadLocalRequest().getSession();
-		String fileImportFilePath = (String) httpSession
-				.getAttribute("fileImportPath");
-		// logger.info("filePaht: " + fileImportFilePath);
-		String type = (String) httpSession.getAttribute("typeFile");
-		// logger.info("type: " + type);
-
-		if (type == "DARWINCORE") {
-			String fileTaxaImportFilePath = (String) httpSession
-					.getAttribute("generatedTaxaFilePath");
-			// logger.info("fileTaxaImportFilePath: " + fileTaxaImportFilePath);
-			String fileVernacularImportFilePath = (String) httpSession
-					.getAttribute("generatedVernacular");
-			// logger.info("fileVernacularImportFilePath: "
-			// + fileVernacularImportFilePath);
-
-			result = new FileMetadata(fileImportFilePath,
-					fileTaxaImportFilePath, fileVernacularImportFilePath, type);
-		} else
-			result = new FileMetadata(fileImportFilePath, type);
-
-		// logger.info("result.filePath: " + result.getFileAbsolutePath());
-		// logger.info("result.type: " + result.getType());
-
-		return result;
-	}
-
-	@Override
-	public List<ImportStatus> getImportsStatus(Date todayDate)
-			throws ServiceException {
-		HttpSession session = this.getThreadLocalRequest().getSession();
-		ASLSession aslSession = SessionUtil.getASLSession(session);
-
-		List<ImportStatus> listStatus = new ArrayList<ImportStatus>();
-
-		return listStatus;
-	}
-
-	@Override
-	public ImportStatus getImportStatusById(String importId)
-			throws ServiceException {
-		HttpSession session = this.getThreadLocalRequest().getSession();
-		ASLSession aslSession = SessionUtil.getASLSession(session);
-
-		Status status = Status.COMPLETE;
-
-		ImportStatus importStatus = new ImportStatus();
-
-		importStatus.setStatus(status);
-
-		return importStatus;
-	}
 
 	
 
@@ -616,5 +512,6 @@ public class DataMinerManagerServiceImpl extends RemoteServiceServlet implements
 	}
 
 	
+	
 
 }

src/main/webapp/DataMinerManager.css

@@ -191,8 +191,7 @@
 	opacity: 0.6;
 }
 
-/* WORKFLOW PANEL */
-.workflow, .tableImporter, .uploadMonitor {
+.tableImporter, .uploadMonitor {
 	box-shadow: inset 0 0 28px rgba(0, 0, 0, 0.11), 0 0 0
 		rgba(255, 255, 255, 1), 0 0 1px rgba(196, 196, 196, 1), inset 0 0 1px
 		rgba(77, 77, 77, 1);
@@ -215,6 +214,33 @@
 	margin-right: 5px;
 }
 
+/* WORKFLOW PANEL */
+.workflow {
+	box-shadow: inset 0 0 28px rgba(0, 0, 0, 0.11), 0 0 0
+		rgba(255, 255, 255, 1), 0 0 1px rgba(196, 196, 196, 1), inset 0 0 1px
+		rgba(77, 77, 77, 1);
+	-moz-box-shadow: inset 0 0 28px rgba(0, 0, 0, 0.11), 0 0 0
+		rgba(255, 255, 255, 1), 0 0 1px rgba(196, 196, 196, 1), inset 0 0 1px
+		rgba(77, 77, 77, 1);
+	-webkit-box-shadow: inset 0 0 28px rgba(0, 0, 0, 0.11), 0 0 0
+		rgba(255, 255, 255, 1), 0 0 1px rgba(196, 196, 196, 1), inset 0 0 1px
+		rgba(77, 77, 77, 1);
+	-o-box-shadow: inset 0 0 28px rgba(0, 0, 0, 0.11), 0 0 0
+		rgba(255, 255, 255, 1), 0 0 1px rgba(196, 196, 196, 1), inset 0 0 1px
+		rgba(77, 77, 77, 1);
+	border-radius: 5px;
+	-moz-border-radius: 5px;
+	-webkit-border-radius: 5px;
+	-o-border-radius: 5px;
+	/*padding: 5px;*/
+	border: 1px solid black;
+	/*margin-left: 5px;
+	margin-right: 5px;*/
+}
+
+
+
+
 .workflow-icon {
 	border: 1px solid black;
 	float: left;
@@ -228,22 +254,18 @@
 	font-size: 16px;
 	font-weight: bold;
 	color: #000077;
-	margin: 5px;
 }
 
+
 .workflow-description {
 	font-size: 13px;
 	color: #505050;
-	margin-left: 65px;
-	margin-bottom: 20px;
 }
 
+
 .workflow-fieldDescription {
 	font-size: 12px;
 	color: #505050;
-	text-align: right;
-	margin-left: 20px;
-	margin-top: 4px;
 }
 
 .workflow-templatesList {