Attachment 131571 Details for Bug 238222 – The ValidatorRoundtrip class

The ValidatorRoundtrip class

ValidatorRoundtrip.java (text/plain), 1.35 KB, created by Sylvere Richard

on 2009-04-12 13:27:24 EDT

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Creator: Sylvere Richard

Created: 2009-04-12 13:27:24 EDT

Size: 1.35 KB

patch

obsolete

>package org.eclipse.swt.snippets;
>
>import org.eclipse.core.databinding.Binding;
>import org.eclipse.core.databinding.observable.Realm;
>import org.eclipse.core.databinding.validation.IValidator;
>import org.eclipse.core.runtime.IStatus;
>
>/**
> * 
> * @author sylvere richard
> *
> */
>public abstract class ValidatorRoundtrip implements IValidator {
>
>	private final Binding b;
>	private final Realm realm;
>
>	public ValidatorRoundtrip(Realm realm, Binding b) {
>		this.realm = realm;
>		this.b = b;
>	}
>
>	/**
>	 * Method declared final. Validation logic must be put in method 
>	 * ValidatorRoundtrip.doValidation
>	 * 
>	 * 
>	 * Will call doValidation. 
>	 * 
>	 * If the IStatus returned by doValidation is an error
>	 * or a cancel, it will force a refresh of the target by calling updateModelToTarget()
>	 * to restore the previous value on screen.
>	 * Otherwise, the process flow is unchanged.
>	 */
>	@Override
>	public final IStatus validate(Object value) {
>		final IStatus res = doValidation(value);
>		if (res.matches(IStatus.INFO | IStatus.WARNING) || res.isOK()) {
>			return res;
>		}
>
>		realm.asyncExec(new Runnable() {
>
>			@Override
>			public void run() {
>				b.updateModelToTarget();
>			}
>		});
>		return res;
>	}
>
>	/**
>	 * Puts validation logic here
>	 * @param value
>	 * @return 
>	 */
>	public abstract IStatus doValidation(Object value);
>}

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Attachments on bug 238222: 131571 | 131572 | 132350 | 132819