| /* |
| * 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.formmodel.algorithms; |
| |
| import java.util.HashSet; |
| import java.util.Iterator; |
| import java.util.Set; |
| |
| import org.apache.avalon.framework.CascadingRuntimeException; |
| import org.apache.cocoon.forms.datatype.Datatype; |
| import org.apache.cocoon.forms.formmodel.CalculatedFieldAlgorithm; |
| import org.apache.cocoon.forms.formmodel.Form; |
| import org.apache.cocoon.forms.formmodel.Widget; |
| import org.apache.cocoon.forms.util.JavaScriptHelper; |
| import org.mozilla.javascript.Function; |
| |
| /** |
| * Javascript calculated field algorithm. |
| * @see org.apache.cocoon.forms.formmodel.algorithms.JavaScriptBuilder |
| * @version $Id$ |
| */ |
| public class JavaScript implements CalculatedFieldAlgorithm { |
| |
| private Function jsfunction = null; |
| private Set triggerWidgets = new HashSet(); |
| |
| |
| public Object calculate(Form form, Widget parent, Datatype datatype) { |
| try { |
| // FIXME we could make it convert to the correct datatype automatically, |
| // at least between different numbers types and eventually between numbers and strings. |
| return JavaScriptHelper.callFunction(this.jsfunction, null, new Object[]{form, parent}, null); |
| } catch (Exception e) { |
| throw new CascadingRuntimeException("Error invoking JavaScript server side calculation", e); |
| } |
| } |
| |
| public boolean isSuitableFor(Datatype dataType) { |
| return true; |
| } |
| |
| /** |
| * @return Returns the jsfunction. |
| */ |
| public Function getJsfunction() { |
| return jsfunction; |
| } |
| /** |
| * @param jsfunction The jsfunction to set. |
| */ |
| public void setJsfunction(Function jsfunction) { |
| this.jsfunction = jsfunction; |
| } |
| |
| public void addTriggerWidget(String widgetname) { |
| this.triggerWidgets.add(widgetname); |
| } |
| |
| /* (non-Javadoc) |
| * @see org.apache.cocoon.forms.formmodel.CalculatedFieldAlgorithm#getTriggerWidgets() |
| */ |
| public Iterator getTriggerWidgets() { |
| return this.triggerWidgets.iterator(); |
| } |
| } |