001// Copyright 2005 The Apache Software Foundation 002// 003// Licensed under the Apache License, Version 2.0 (the "License"); 004// you may not use this file except in compliance with the License. 005// You may obtain a copy of the License at 006// 007// http://www.apache.org/licenses/LICENSE-2.0 008// 009// Unless required by applicable law or agreed to in writing, software 010// distributed under the License is distributed on an "AS IS" BASIS, 011// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 012// See the License for the specific language governing permissions and 013// limitations under the License. 014 015package org.apache.tapestry.form; 016 017import org.apache.hivemind.util.PropertyUtils; 018import org.apache.tapestry.IMarkupWriter; 019import org.apache.tapestry.IRequestCycle; 020 021/** 022 * Abstract {@link FormComponentContributor} implementation that adds an optional static javscript 023 * method reference to the page. 024 * 025 * @author Paul Ferraro 026 * @since 4.0 027 */ 028public abstract class AbstractFormComponentContributor implements FormComponentContributor 029{ 030 private String _script = defaultScript(); 031 032 public AbstractFormComponentContributor() 033 { 034 } 035 036 // Needed until HIVEMIND-134 fix is available 037 public AbstractFormComponentContributor(String initializer) 038 { 039 PropertyUtils.configureProperties(this, initializer); 040 } 041 042 /** 043 * Defines the default JavaScript file used by this contributor. Overriden by most subclasses 044 * that use JavaScript. 045 */ 046 protected String defaultScript() 047 { 048 return null; 049 } 050 051 public String getScript() 052 { 053 return _script; 054 } 055 056 public void setScript(String script) 057 { 058 _script = script; 059 } 060 061 /** 062 * @see org.apache.tapestry.form.FormComponentContributor#renderContribution(org.apache.tapestry.IMarkupWriter, 063 * org.apache.tapestry.IRequestCycle, FormComponentContributorContext, 064 * org.apache.tapestry.form.IFormComponent) 065 */ 066 public void renderContribution(IMarkupWriter writer, IRequestCycle cycle, 067 FormComponentContributorContext context, IFormComponent field) 068 { 069 if (_script != null) 070 context.includeClasspathScript(_script); 071 } 072}