+/*
+ * Copyright 2005-2011 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.wamblee.wicket.behavior;
+
+import org.apache.wicket.AttributeModifier;
+import org.apache.wicket.model.IModel;
+import org.apache.wicket.model.Model;
+
+/**
+ * Attribute modifier to add onclick confirmation to buttons.
+ *
+ * @author Erik Brakkee
+ */
+public class OnClickConfirmationBehavior extends AttributeModifier {
+
+ private static final String ATTRIBUTE = "onclick";
+
+ /**
+ * Constructs the behavior.
+ * @param aMsg Confirmation message.
+ */
+ public OnClickConfirmationBehavior(String aMsg) {
+ this(new Model(aMsg));
+ }
+
+ /**
+ * Constructs the behavior.
+ * @param aMsgModel Confirmation message.
+ */
+ public OnClickConfirmationBehavior(IModel<?> aMsgModel) {
+ super(ATTRIBUTE, true, aMsgModel);
+ }
+
+ @Override
+ protected String newValue(String aCurrentValue, String aReplacementValue) {
+ String value = "var conf = confirm('" + aReplacementValue + "'); " +
+ "if (!conf) return false; ";
+ if (aCurrentValue != null) {
+ return value + aCurrentValue;
+ }
+ return value;
+ }
+
+}