data-miner-manager/src/main/java/org/gcube/portlets/user/dataminermanager/client/experimentArea/WorkflowPanel.java

/**
 * 
 */
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.ResubmitComputationEvent;
import org.gcube.portlets.user.dataminermanager.client.experimentArea.WorkflowOperatorPanel.WorkflowOperatorPanelHandler;

import com.google.gwt.user.client.ui.HTML;
import com.google.gwt.user.client.ui.Image;
import com.sencha.gxt.cell.core.client.ButtonCell.ButtonScale;
import com.sencha.gxt.widget.core.client.ContentPanel;
import com.sencha.gxt.widget.core.client.TabItemConfig;
import com.sencha.gxt.widget.core.client.TabPanel;
import com.sencha.gxt.widget.core.client.button.TextButton;
import com.sencha.gxt.widget.core.client.container.SimpleContainer;
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.toolbar.LabelToolItem;
import com.sencha.gxt.widget.core.client.toolbar.ToolBar;

/**
 * @author ceras
 *
 */
public class WorkflowPanel extends TabPanel {
	
	public static final String DEFAULT_OPERATOR = "AQUAMAPS_SUITABLE";
	private static final String DELETE_ALL_BUTTON_TOOLTIP = "Remove All Operators";
	private static final boolean WORKFLOW_MODE = false;
	private WorkflowOperatorPanel workflowOperatorPanel;
	private TextButton removeAllButton = new TextButton(DELETE_ALL_BUTTON_TOOLTIP); 
	private ComputationPanel computationPanel;
	private ContentPanel workflowLc;
	

	/**
	 * 
	 */
	public WorkflowPanel() {
		super();
		
		bind();
		setBodyBorder(false);
		
	    TabItemConfig tabWorkFlowLcItemConf = new TabItemConfig(
	    		".: Computation", false);
	    tabWorkFlowLcItemConf.setIcon(DataMinerManager.resources.folderExplore());
	    workflowLc = new ContentPanel();
		workflowLc.setHeaderVisible(false);
	    add(workflowLc, tabWorkFlowLcItemConf);
		
		
		
		TabItemConfig tabComputationPanelItemConf = new TabItemConfig(
				".: Computations Execution", false);
		tabComputationPanelItemConf.setIcon(DataMinerManager.resources.folderExplore());
		computationPanel = new ComputationPanel();
		add(computationPanel, tabComputationPanelItemConf);

		setToolsPanel();
		emptyPanel();
		setActiveWidget(computationPanel);
	}
	
	/**
	 * 
	 */
	private void bind() {
		EventBusProvider.INSTANCE.addHandler(ResubmitComputationEvent.getType(), new ResubmitComputationEvent.ResubmitComputationHandler() {
			@Override
			public void onResubmitComputation(ResubmitComputationEvent event) {
				setActiveWidget(computationPanel);
			}
		});
	}

	/**
	 * 
	 */
	private void emptyPanel() {
		workflowOperatorPanel = null;
		removeAllButton.setEnabled(false);
		workflowLc.clear();
		workflowLc.add(new HTML("<br><br><br><br><br><br><br><br><br><br><br><p align='center'>Select an operator.</p>"));
		workflowLc.forceLayout();;
		
	}
	
	private void setToolsPanel() {
		ToolBar toolBar = new ToolBar();
		toolBar.add(new LabelToolItem("Tools"));
		
		removeAllButton.setToolTip(DELETE_ALL_BUTTON_TOOLTIP);
		removeAllButton.setIcon(DataMinerManager.resources.removeAll());
		removeAllButton.setScale(ButtonScale.MEDIUM);
		removeAllButton.setEnabled(false);
		removeAllButton.addSelectHandler(new SelectHandler() {
			
			@Override
			public void onSelect(SelectEvent event) {
				emptyPanel();
				
			}
		});
		
		
		toolBar.add(removeAllButton);
		workflowLc.addTool(toolBar);
	}

	/**
	 * @param computationTitle 
	 * @param operator 
	 * 
	 */
	private void startComputation(String computationTitle, String computationDescription) {


		if (workflowOperatorPanel!=null) {	
			forceLayout();
			workflowOperatorPanel.updateOperatorParametersValues();
			Operator op = workflowOperatorPanel.getOperator();
			
			computationPanel.startNewComputation(op, computationTitle, computationDescription);
		}
	}

	public void addOperator(Operator op) {
		
		if (!WORKFLOW_MODE)
			workflowOperatorPanel = null;
		
		setActiveWidget(workflowLc);
		
		if (workflowOperatorPanel==null) {
			workflowLc.clear();
			workflowLc.add(new HTML("&nbsp;"));
			workflowLc.forceLayout();
		}

		workflowOperatorPanel = new WorkflowOperatorPanel(op);
		workflowOperatorPanel.setHandler(new WorkflowOperatorPanelHandler() {
			@Override
			public void startComputation(String computationTitle, String computationDescription) {
				WorkflowPanel.this.startComputation(computationTitle, computationDescription);
				setActiveWidget(computationPanel);
			}
		});
		
		addConnector(true);
		
		workflowLc.add(workflowOperatorPanel); // operator
		workflowLc.forceLayout();
		
		removeAllButton.setEnabled(true);
	}

	
	/**
	 * 
	 * @param first
	 */
	private void addConnector(boolean first) {
		SimpleContainer lc = new SimpleContainer();
		lc.setHeight(first ? 26 : 22);
		lc.add(new Image(
				first ? DataMinerManager.resources.workflowConnector1() : DataMinerManager.resources.workflowConnector2()
			));
		workflowLc.add(lc);
	}
}