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    
015    package org.apache.tapestry.form;
016    
017    import java.util.Locale;
018    
019    import org.apache.hivemind.ClassResolver;
020    import org.apache.hivemind.Resource;
021    import org.apache.hivemind.util.ClasspathResource;
022    import org.apache.tapestry.IForm;
023    import org.apache.tapestry.IRequestCycle;
024    import org.apache.tapestry.PageRenderSupport;
025    import org.apache.tapestry.TapestryUtils;
026    
027    /**
028     * Implementation of {@link org.apache.tapestry.form.FormComponentContributorContext}.
029     * 
030     * @author Howard Lewis Ship
031     * @since 4.0
032     */
033    public class FormComponentContributorContextImpl extends ValidationMessagesImpl implements
034            FormComponentContributorContext
035    {
036        private final ClassResolver _resolver;
037    
038        private final PageRenderSupport _pageRenderSupport;
039    
040        private final IFormComponent _field;
041    
042        private final IForm _form;
043    
044        private final String _formId;
045    
046        /**
047         * Used only for testing.
048         */
049    
050        FormComponentContributorContextImpl(IFormComponent field)
051        {
052            super(field, Locale.ENGLISH);
053    
054            _field = field;
055            _resolver = null;
056            _formId = null;
057            _pageRenderSupport = null;
058            _form = null;
059        }
060    
061        public FormComponentContributorContextImpl(Locale locale, IRequestCycle cycle,
062                IFormComponent field)
063        {
064            super(field, locale);
065    
066            _field = field;
067            _form = field.getForm();
068            _formId = _form.getName();
069    
070            _resolver = cycle.getInfrastructure().getClassResolver();
071    
072            _pageRenderSupport = TapestryUtils.getPageRenderSupport(cycle, field);
073        }
074    
075        public void includeClasspathScript(String path)
076        {
077            Resource resource = new ClasspathResource(_resolver, path);
078    
079            _pageRenderSupport.addExternalScript(resource);
080        }
081    
082        public void addSubmitHandler(String submitListener)
083        {
084            _pageRenderSupport.addInitializationScript("Tapestry.onsubmit('" + _formId + "', "
085                    + submitListener + ");");
086        }
087    
088        public void registerForFocus(int priority)
089        {
090            _form.registerForFocus(_field, priority);
091        }
092    
093    }