org.eclipse.osbp.runtime.web.vaadin.components/src/org/eclipse/osbp/runtime/web/vaadin/components/fields/filter2/CompareDateComponent.java

package org.eclipse.osbp.runtime.web.vaadin.components.fields.filter2;

import java.util.Date;

import javax.inject.Inject;
import javax.inject.Named;

import org.eclipse.osbp.ecview.core.common.context.IViewContext;
import org.eclipse.osbp.ui.api.themes.IThemeResourceService.ThemeResourceType;

import com.vaadin.data.Container.Filter;
import com.vaadin.data.util.BeanItemContainer;
import com.vaadin.data.util.filter.Compare;
import com.vaadin.data.util.filter.Not;
import com.vaadin.server.Resource;
import com.vaadin.server.ThemeResource;
import com.vaadin.ui.ComboBox;
import com.vaadin.ui.Component;
import com.vaadin.ui.DateField;
import com.vaadin.ui.HorizontalLayout;
import com.vaadin.ui.Label;

@SuppressWarnings("serial")
public class CompareDateComponent extends CompareComponent {

	private Label captionField;

	private ComboBox compareTypeField;

	private DateField valueField;

	@Inject
	public CompareDateComponent(@Named("propertyId") String propertyId, IViewContext viewContext) {
		super(propertyId, viewContext);
	}

	@Override
	protected Component createMainLayout() {
		HorizontalLayout mainLayout = new HorizontalLayout();
		captionField = new Label();
		captionField.setValue(propertyId);
		compareTypeField = new ComboBox();
		valueField = new DateField();

		mainLayout.addComponent(captionField);
		mainLayout.addComponent(compareTypeField);
		mainLayout.addComponent(valueField);

		captionField.setWidth("100%");
		compareTypeField.setWidth("100%");
		valueField.setWidth("100%");
		mainLayout.setExpandRatio(captionField, 1.0f);
		mainLayout.setExpandRatio(compareTypeField, 0.5f);
		mainLayout.setExpandRatio(valueField, 1.5f);

		updateContainer();

		compareTypeField.setItemCaptionPropertyId("caption");
		compareTypeField.setItemIconPropertyId("image");

		return mainLayout;
	}

	protected void updateContainer() {
		BeanItemContainer<CompareType> container = new BeanItemContainer<>(CompareType.class);
		container
				.addBean(new CompareType(CompareTypeEnum.EQ, toLabel(CompareTypeEnum.EQ), toImage(CompareTypeEnum.EQ)));
		container
				.addBean(new CompareType(CompareTypeEnum.NE, toLabel(CompareTypeEnum.NE), toImage(CompareTypeEnum.NE)));
		container
				.addBean(new CompareType(CompareTypeEnum.GT, toLabel(CompareTypeEnum.GT), toImage(CompareTypeEnum.GT)));
		container
				.addBean(new CompareType(CompareTypeEnum.GE, toLabel(CompareTypeEnum.GE), toImage(CompareTypeEnum.GE)));
		container
				.addBean(new CompareType(CompareTypeEnum.LT, toLabel(CompareTypeEnum.LT), toImage(CompareTypeEnum.LT)));
		container
				.addBean(new CompareType(CompareTypeEnum.LE, toLabel(CompareTypeEnum.LE), toImage(CompareTypeEnum.LE)));

		compareTypeField.setContainerDataSource(container);
	}

	protected String toLabel(CompareTypeEnum enumx) {
		return Util.getCaption(i18nService, enumx.name(), enumx.name(), getLocale());
	}

	protected Resource toImage(CompareTypeEnum enumx) {
		return themeResourceService.getThemeResource(enumx.name(), ThemeResourceType.ICON);
	}

	public Filter getFilter() {
		if (!valueField.isValid() || !compareTypeField.isValid()) {
			return null;
		}

		CompareType compareType = (CompareType) compareTypeField.getValue();

		if (compareType == null) {
			return null;
		}

		Date value = valueField.getValue();
		if (value == null) {
			return null;
		}

		Filter filter = null;
		switch (compareType.typeEnum) {
		case EQ:
			filter = new Compare.Equal(propertyId, value);
			break;
		case GE:
			filter = new Compare.GreaterOrEqual(propertyId, value);
			break;
		case GT:
			filter = new Compare.Greater(propertyId, value);
			break;
		case LE:
			filter = new Compare.LessOrEqual(propertyId, value);
			break;
		case LT:
			filter = new Compare.Less(propertyId, value);
			break;
		case NE:
			filter = new Not(new Compare.Equal(propertyId, value));
			break;
		}

		return filter;
	}

	@Override
	public void resetAllFilters() {
		compareTypeField.setValue(null);
		valueField.setValue(null);
	}

	protected void updateCaptions() {
		captionField.setValue(getCaptionInternal());

		updateContainer();
	}

	public static class CompareType {
		private CompareTypeEnum typeEnum;
		private String caption;
		private Resource image;

		public CompareType(CompareTypeEnum typeEnum, String caption, Resource image) {
			super();
			this.typeEnum = typeEnum;
			this.caption = caption;
			this.image = image;
		}

		public CompareTypeEnum getTypeEnum() {
			return typeEnum;
		}

		public void setTypeEnum(CompareTypeEnum typeEnum) {
			this.typeEnum = typeEnum;
		}

		public String getCaption() {
			return caption;
		}

		public void setCaption(String caption) {
			this.caption = caption;
		}

		public Resource getImage() {
			return image;
		}

		public void setImage(Resource image) {
			this.image = image;
		}

	}

	public enum CompareTypeEnum {
		EQ, NE, GT, GE, LE, LT;
	}
}