package flintstones.valuation.linguistic.ui;

import java.util.ArrayList;

import javax.inject.Inject;

import org.eclipse.e4.core.services.nls.Translation;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.widgets.Combo;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Label;
import org.eclipse.wb.swt.SWTResourceManager;

import flintstones.domain.fuzzyset.FuzzySet;
import flintstones.domain.fuzzyset.label.LabelLinguisticDomain;
import flintstones.entity.valuation.Valuation;
import flintstones.model.ui.service.UiService;
import flintstones.model.valuation.service.IValuationService;
import flintstones.valuation.linguistic.LinguisticValuation;
import flintstones.valuation.linguistic.ui.messages.Messages;
import flintstones.valuation.ui.ValuationPanel;

@SuppressWarnings("javadoc")
public class ValuationPanelLinguistic extends ValuationPanel {

	private Combo labelCombo;

	private LabelLinguisticDomain label;
	
	@Inject
	IValuationService valuationService;

	@Inject
	@Translation
	private Messages messages;

	@Override
	protected void createControls() {
		UiService.setGridLayout(this.valuationPart, 1);
		
		createBlock1Title();
		createBlock2LabelsCombo();
	}

	private void createBlock1Title() {
		Label titleLabel = new Label(this.valuationPart, SWT.NONE);
		titleLabel.setFont(SWTResourceManager.getFont("Cantarell", 11, SWT.BOLD)); //$NON-NLS-1$
		GridData gd = UiService.setGridData(titleLabel, 0, 0, true, false);
		gd.verticalIndent = 15;
		titleLabel.setText(this.messages.Linguistic_evaluation);
		titleLabel.setBackground(new Color(Display.getCurrent(), 255, 255, 255));
	}
	
	private void createBlock2LabelsCombo() {
		ArrayList<String> labelsName = ((FuzzySet) this.domain).getLabelSet().getLabelsName();
		this.labelCombo = new Combo(this.valuationPart, SWT.BORDER | SWT.READ_ONLY);
		GridData gd = UiService.setGridData(this.labelCombo, 0, 1, false, false);
		gd.verticalIndent = 10;
		this.labelCombo.setItems(labelsName.toArray(new String[0]));
		this.labelCombo.setBackground(new Color(Display.getCurrent(), 255, 255, 255));
		selectComboLabel();
		this.labelCombo.addModifyListener(e -> {
			ValuationPanelLinguistic.this.label = 
					((FuzzySet) ValuationPanelLinguistic.this.domain)
					.getLabelSet()
					.getLabel(ValuationPanelLinguistic.this.labelCombo.getText());
			ValuationPanelLinguistic.this.selectionChange();
		});
	}

	private void selectComboLabel() {
		int pos = 0;
		if (this.valuation != null && this.valuation instanceof LinguisticValuation) {
			this.label = ((LinguisticValuation) this.valuation).getLabel();
			pos = ((FuzzySet) this.domain).getLabelSet().getPos(this.label);
		} else
			this.label = ((FuzzySet) this.domain).getLabelSet().getLabel(pos);

		this.labelCombo.select(pos);
		this.selectionChange();
	}

	@Override
	public Object getSelection() {
		return this.labelCombo.getSelectionIndex();
	}

	@Override
	public Valuation createNewValuation() {

		LinguisticValuation result = null;

		if (this.valuation == null) {
			result = (LinguisticValuation) this.valuationService.create(this.domain);
			result.setDomain(this.domain);
		} else
			result = (LinguisticValuation) this.valuation.clone();

		result.setLabel(this.label);
		result.setEvaluated(true);

		return result;
	}
}