| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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.apache.cocoon.forms.samples.bindings; |
| |
| import org.apache.cocoon.forms.binding.AbstractCustomBinding; |
| import org.apache.cocoon.forms.binding.Binding; |
| import org.apache.cocoon.forms.binding.BindingException; |
| import org.apache.cocoon.forms.formmodel.Widget; |
| import org.apache.cocoon.forms.util.DomHelper; |
| import org.apache.commons.jxpath.JXPathContext; |
| import org.w3c.dom.Element; |
| |
| /** |
| * CustomValueWrapBinding |
| */ |
| public class CustomValueWrapBinding extends AbstractCustomBinding { |
| |
| private static final char DEFAULT_DELIMITER = '*'; |
| private final String prefix; |
| private final String suffix; |
| |
| public CustomValueWrapBinding() { |
| this(DEFAULT_DELIMITER); |
| } |
| |
| public CustomValueWrapBinding(char delimiter) { |
| this(delimiter, delimiter); |
| } |
| |
| public CustomValueWrapBinding(char prefix, char suffix) { |
| this.prefix = "" + prefix + prefix; |
| this.suffix = "" + suffix + suffix; |
| } |
| |
| /** |
| * This unwraps the value from the model by removing the 2 prefix and suffix-chars |
| * before setting it onto the model |
| * |
| * Method signature and semantics complies to {@link AbstractCustomBinding#doLoad(Widget, JXPathContext)} |
| */ |
| public void doLoad(Widget frmModel, JXPathContext jxpc) throws BindingException { |
| String appValue = (String)jxpc.getValue(getXpath()); |
| String formValue= null; |
| if (appValue.startsWith(this.prefix) |
| && appValue.endsWith(suffix) |
| && appValue.length() >= this.prefix.length() + this.suffix.length()) { |
| formValue = appValue.substring(this.prefix.length(), |
| appValue.length() - this.suffix.length()); |
| } |
| frmModel.setValue(formValue); |
| } |
| |
| /** |
| * This wraps the value from the form between 2 prefix and suffix-chars |
| * before saving to the model |
| * |
| * Method signature and semantics complies to {@link AbstractCustomBinding#doSave(Widget, JXPathContext)} |
| */ |
| public void doSave(Widget frmModel, JXPathContext jxpc) throws BindingException { |
| Object formValue = frmModel.getValue(); |
| jxpc.setValue(getXpath(), "" + this.prefix + formValue + this.suffix); |
| } |
| |
| /** |
| * Builds the actual binding class based on its XML config. |
| * |
| * @param config the {@link Element} holding the config for the binding to create. |
| * @return the configured binding |
| * @throws BindingException when the creation fails |
| */ |
| public static Binding createBinding(Element config) throws BindingException { |
| |
| try { |
| String pfx = DomHelper.getAttribute(config, "prefixchar", null); |
| String sfx = DomHelper.getAttribute(config, "suffixchar", null); |
| |
| final char prefixChar = (pfx!=null) ? pfx.charAt(0) : DEFAULT_DELIMITER; |
| final char suffixChar = (sfx!=null) ? sfx.charAt(0) : DEFAULT_DELIMITER; |
| |
| return new CustomValueWrapBinding(prefixChar, suffixChar); |
| } catch (Exception e) { |
| throw new BindingException("Could not create instance of CustomValueWrapBinding.", e, |
| DomHelper.getLocationObject(config)); |
| } |
| } |
| } |