package org.gcube.portlets.user.td.columnwidget.client.dimension;

import java.util.ArrayList;

import org.gcube.portlets.user.td.columnwidget.client.utils.Constants;
import org.gcube.portlets.user.td.columnwidget.client.utils.UtilsGXT3;
import org.gcube.portlets.user.td.gwtservice.shared.tr.ColumnData;
import org.gcube.portlets.user.td.gwtservice.shared.tr.DimensionRow;
import org.gcube.portlets.user.td.widgetcommonevent.shared.CellData;
import org.gcube.portlets.user.tdwx.client.TabularDataX;
import org.gcube.portlets.user.tdwx.client.TabularDataXGridPanel;
import org.gcube.portlets.user.tdwx.client.event.FailureEvent;
import org.gcube.portlets.user.tdwx.client.event.FailureEventHandler;
import org.gcube.portlets.user.tdwx.shared.model.TableId;

import com.allen_sauer.gwt.log.client.Log;
import com.google.web.bindery.event.shared.EventBus;
import com.sencha.gxt.core.client.Style.SelectionMode;
import com.sencha.gxt.widget.core.client.FramedPanel;
import com.sencha.gxt.widget.core.client.Window;
import com.sencha.gxt.widget.core.client.button.TextButton;
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.TextField;
import com.sencha.gxt.widget.core.client.info.Info;

/**
 * 
 * @author "Giancarlo Panichi"
 *
 */
public class DimensionRowSelectionDialog extends Window {
	protected static final int WIDTH = 550;
	protected static final int HEIGHT = 520;

	protected ColumnData column;
	protected EventBus eventBus;
	protected DimensionRow dimRow;
	protected CellData cellData;

	protected ArrayList<DimensionRowSelectionListener> listeners;

	private static TabularDataX tabularData;
	private TabularDataXGridPanel gridPanel;
	private TextField value;
	private TextButton select;

	public DimensionRowSelectionDialog(ColumnData column, CellData cellData,
			EventBus eventBus) {
		this.column = column;
		this.eventBus = eventBus;
		this.cellData = cellData;
		listeners = new ArrayList<DimensionRowSelectionListener>();
		initWindow();
		create();
		open();
	}
	
	
	

	protected void create() {
		final FramedPanel panel = new FramedPanel();
		panel.setHeaderVisible(false);
		panel.setBodyBorder(false);

		VerticalLayoutContainer v = new VerticalLayoutContainer();

		value = new TextField();
		value.setValue(cellData.getValue());
		value.setReadOnly(true);

		// Grid
		tabularData = new TabularDataX(Constants.TDX_DATASOURCE_FACTORY_ID);
		tabularData.addFailureHandler(new FailureEventHandler() {

			public void onFailure(FailureEvent event) {
				Info.display("Error: " + event.getMessage(), event.getCaught()
						.getMessage());

			}
		});
		
		

		gridPanel = tabularData.getGridPanel();
		gridPanel.setHeaderVisible(false);
		gridPanel.setSelectionModel(SelectionMode.SINGLE);
		Log.debug("SetVisibleOnlyColumn");
		if(column.isViewColumn()){
			gridPanel.setVisibleOnlyColumn(column.getColumnId());
		} else {
			if(column.getRelationship()!=null){
				//Used a Dimension Column
				gridPanel.setVisibleOnlyColumn(column.getRelationship().getTargetColumnId());
			} else {
				UtilsGXT3.alert("Attention", "No valid view column associated with this column!");
				return;
			}
		}
		v.add(new FieldLabel(value, "Value"), new VerticalLayoutData(1, -1));
		v.add(gridPanel, new VerticalLayoutData(1, 1));

		panel.add(v);

		select = new TextButton("Select");
		select.addSelectHandler(new SelectHandler() {

			@Override
			public void onSelect(SelectEvent event) {
				startSelect();
			}
		});

		panel.addButton(select);

		add(panel);
		forceLayout();
	}

	protected void startSelect() {
		ArrayList<String> rowsId = gridPanel.getSelectedRowsId();
		if (rowsId == null || rowsId.size() == 0) {
			Log.debug("No row selected");
			UtilsGXT3.alert("Attention", "Select a row");
		} else {
			String rowId = rowsId.get(0);
			Log.debug("Row selected: " + rowId);
			ArrayList<String> cellValues = gridPanel.getCellValue(column
					.getColumnId());
			if (cellValues == null || cellValues.size() == 0) {
				Log.debug("No value retrieved");
				UtilsGXT3.alert("Attention", "Select a row");
			} else {
				String cellValue = cellValues.get(0);
				Log.debug("Retrived: " + rowId + " " + cellValue);
				dimRow = new DimensionRow(rowId, cellValue);
				fireCompleted(dimRow);
			}
		}

	}

	protected void open() {
		long tableId=0;
		if (column.isViewColumn()) {
			tableId = column.getColumnViewData().getTargetTableId();
		} else {
			if(column.getRelationship()!=null){
				//Used a Dimension Column
				tableId = Long.valueOf(column.getRelationship().getTargetTableId());
			} else {
				UtilsGXT3.alert("Attention", "No valid table associated with this column!");
				return;
			}
		} 
		
		TableId tableOpening = new TableId(Constants.TDX_DATASOURCE_FACTORY_ID,
				String.valueOf(tableId));
		Log.debug("Open Table:"+tableId);
		tabularData.openTable(tableOpening);
		
	}
	

	protected void initWindow() {
		setWidth(WIDTH);
		setHeight(HEIGHT);
		setBodyBorder(false);
		setResizable(false);
		setHeadingText("Dimension");
		setClosable(true);
		// getHeader().setIcon(ResourceBundle.INSTANCE.replace());

	}

	/**
	 * {@inheritDoc}
	 */
	@Override
	protected void initTools() {
		super.initTools();

		closeBtn.addSelectHandler(new SelectHandler() {

			public void onSelect(SelectEvent event) {
				fireAborted();
				hide();
			}
		});

	}

	public void addListener(DimensionRowSelectionListener listener) {
		listeners.add(listener);
	}

	public void removeListener(DimensionRowSelectionListener listener) {
		listeners.remove(listener);
	}

	public void fireCompleted(DimensionRow dimensionRow) {
		for (DimensionRowSelectionListener listener : listeners)
			listener.selectedDimensionRow(dimensionRow);
		hide();
	}

	public void fireAborted() {
		for (DimensionRowSelectionListener listener : listeners)
			listener.abortedDimensionRowSelection();
		hide();
	}

	public void fireFailed(String reason, String details) {
		for (DimensionRowSelectionListener listener : listeners)
			listener.failedDimensionRowSelection(reason, details);
		hide();
	}

}