Java tutorial
/* * StyleValidationFeedback.java * * Created on July 26, 2007, 12:38 PM * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ package com.totsp.gwittir.client.validator; import com.google.gwt.core.client.GWT; import com.google.gwt.user.client.ui.UIObject; import com.totsp.gwittir.client.log.Level; import com.totsp.gwittir.client.log.Logger; import java.util.HashMap; /** * * @author <a href="mailto:cooper@screaming-penguin.com">Robert "kebernet" Cooper</a> */ public class StyleValidationFeedback extends AbstractValidationFeedback { private String styleName; private HashMap previousStyles = new HashMap(); /** Creates a new instance of StyleValidationFeedback */ public StyleValidationFeedback(String styleName) { this.styleName = styleName; } public void handleException(Object source, ValidationException exception) { UIObject object = (UIObject) source; if (this.styleName.equals(object.getStyleName())) { return; } String previousStyle = object.getStyleName() == null || object.getStyleName().length() == 0 ? "default" : object.getStyleName(); if (!this.previousStyles.containsKey(source)) this.previousStyles.put(source, previousStyle); Logger.getAnonymousLogger().log(Level.SPAM, "Previous style: " + previousStyle, null); object.setStyleName(this.styleName); Logger.getAnonymousLogger().log(Level.SPAM, "Current style: " + object.getStyleName(), null); } public void resolve(Object source) { UIObject object = (UIObject) source; String previousStyle = (String) this.previousStyles.get(source); if (previousStyle != null) { GWT.log("Reverting to style:" + previousStyle, null); object.setStyleName(previousStyle); GWT.log(object.toString(), null); this.previousStyles.remove(source); } } }