| // Copyright 2004 The Apache Software Foundation |
| // |
| // 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.apache.tapestry.contrib.inspector; |
| |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.List; |
| |
| import org.apache.tapestry.BaseComponent; |
| import org.apache.tapestry.IEngine; |
| import org.apache.tapestry.IPage; |
| import org.apache.tapestry.engine.IPageRecorder; |
| import org.apache.tapestry.event.PageEvent; |
| import org.apache.tapestry.event.PageRenderListener; |
| import org.apache.tapestry.record.IPageChange; |
| |
| /** |
| * Component of the {@link Inspector} page used to display |
| * the persisent properties of the page. |
| * |
| * @version $Id$ |
| * @author Howard Lewis Ship |
| * |
| **/ |
| |
| public class ShowProperties extends BaseComponent implements PageRenderListener |
| { |
| private List _properties; |
| private IPageChange _change; |
| private IPage _inspectedPage; |
| |
| /** |
| * Does nothing. |
| * |
| * @since 1.0.5 |
| * |
| **/ |
| |
| public void pageBeginRender(PageEvent event) |
| { |
| } |
| |
| /** |
| * @since 1.0.5 |
| * |
| **/ |
| |
| public void pageEndRender(PageEvent event) |
| { |
| _properties = null; |
| _change = null; |
| _inspectedPage = null; |
| } |
| |
| private void buildProperties() |
| { |
| Inspector inspector = (Inspector) getPage(); |
| |
| _inspectedPage = inspector.getInspectedPage(); |
| |
| IEngine engine = getPage().getEngine(); |
| IPageRecorder recorder = |
| engine.getPageRecorder(_inspectedPage.getPageName(), inspector.getRequestCycle()); |
| |
| // No page recorder? No properties. |
| |
| if (recorder == null) |
| { |
| _properties = Collections.EMPTY_LIST; |
| return; |
| } |
| |
| if (recorder.getHasChanges()) |
| _properties = new ArrayList(recorder.getChanges()); |
| } |
| |
| /** |
| * Returns a {@link List} of {@link IPageChange} objects. |
| * |
| * <p>Sort order is not defined. |
| * |
| **/ |
| |
| public List getProperties() |
| { |
| if (_properties == null) |
| buildProperties(); |
| |
| return _properties; |
| } |
| |
| public void setChange(IPageChange value) |
| { |
| _change = value; |
| } |
| |
| public IPageChange getChange() |
| { |
| return _change; |
| } |
| |
| /** |
| * Returns the name of the value's class, if the value is non-null. |
| * |
| **/ |
| |
| public String getValueClassName() |
| { |
| Object value; |
| |
| value = _change.getNewValue(); |
| |
| if (value == null) |
| return "<null>"; |
| |
| return convertClassToName(value.getClass()); |
| } |
| |
| private String convertClassToName(Class cl) |
| { |
| // TODO: This only handles one-dimensional arrays |
| // property. |
| |
| if (cl.isArray()) |
| return "array of " + cl.getComponentType().getName(); |
| |
| return cl.getName(); |
| } |
| |
| } |