Chris Phillipson fastnsilver

fastnsilver / AbstractValidatatableColumn

Created June 1, 2012 05:27

Custom GWT Column extension that offers JSR-303 client-side support for validating cell value within a column (incl. error message pop-up panel)

	import java.util.Set;

	import javax.validation.ConstraintViolation;
	import javax.validation.Validation;
	import javax.validation.Validator;

	import com.google.gwt.user.cellview.client.AbstractHasData;
	import com.google.gwt.user.cellview.client.Column;

	/**

fastnsilver / EnergyOffer.addPriceMwColumn

Created June 1, 2012 05:08

Revised method impl for EnergyOfferGrid that composes a number of AbstractValidatableColumns into a CompositeValidatableColumn

	protected void addPriceMwColumn(final int colIndex, DisplayMode currentDisplayMode) {

	// Construct a composite cell for energy offers that includes a pair of text inputs
	final List<HasCell<EnergyOfferDTO, String>> columns = new ArrayList<
	HasCell<EnergyOfferDTO, String>>();

	// this DTO is passed along so that price and mw values for new entries are kept together
	final OfferPriceMwPair newOfferPriceMwPair = new OfferPriceMwPair();

	// Price

fastnsilver / WrapperCell

Created June 1, 2012 05:04

WrapperCell is a "knock-off" of GWT's CompositeCell. Provides access to inner cells. Used by CompositeValidatableColumn.

	import java.util.ArrayList;
	import java.util.Collections;
	import java.util.List;

	import com.google.gwt.cell.client.AbstractCell;
	import com.google.gwt.cell.client.Cell;
	import com.google.gwt.cell.client.FieldUpdater;
	import com.google.gwt.cell.client.HasCell;
	import com.google.gwt.cell.client.ValueUpdater;
	import com.google.gwt.dom.client.Element;

fastnsilver / CompositeValidatableColumn

Created June 1, 2012 05:02

Snippet of GWT client code attempting to "wrap" a number of ValidatableInputCell invoking onBrowserEvent for each

	public class CompositeValidatableColumn<T> extends IdentityColumn<T> {

	public CompositeValidatableColumn(WrapperCell<T> cell) {
	super(cell);
	}

	@Override
	public WrapperCell<T> getCell() {
	return (WrapperCell<T>) super.getCell();
	}