| package org.apache.turbine.modules.pages; |
| |
| /* ==================================================================== |
| * The Apache Software License, Version 1.1 |
| * |
| * Copyright (c) 2001-2003 The Apache Software Foundation. All rights |
| * reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * |
| * 3. The end-user documentation included with the redistribution, |
| * if any, must include the following acknowledgment: |
| * "This product includes software developed by the |
| * Apache Software Foundation (http://www.apache.org/)." |
| * Alternately, this acknowledgment may appear in the software itself, |
| * if and wherever such third-party acknowledgments normally appear. |
| * |
| * 4. The names "Apache" and "Apache Software Foundation" and |
| * "Apache Turbine" must not be used to endorse or promote products |
| * derived from this software without prior written permission. For |
| * written permission, please contact apache@apache.org. |
| * |
| * 5. Products derived from this software may not be called "Apache", |
| * "Apache Turbine", nor may "Apache" appear in their name, without |
| * prior written permission of the Apache Software Foundation. |
| * |
| * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED |
| * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR |
| * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
| * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
| * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| * ==================================================================== |
| * |
| * This software consists of voluntary contributions made by many |
| * individuals on behalf of the Apache Software Foundation. For more |
| * information on the Apache Software Foundation, please see |
| * <http://www.apache.org/>. |
| */ |
| |
| import java.util.List; |
| |
| import org.apache.commons.lang.StringUtils; |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| import org.apache.ecs.Doctype; |
| import org.apache.turbine.Turbine; |
| import org.apache.turbine.TurbineConstants; |
| import org.apache.turbine.modules.ActionLoader; |
| import org.apache.turbine.modules.LayoutLoader; |
| import org.apache.turbine.modules.Page; |
| import org.apache.turbine.modules.Screen; |
| import org.apache.turbine.modules.ScreenLoader; |
| import org.apache.turbine.pipeline.PipelineData; |
| import org.apache.turbine.util.RunData; |
| import org.apache.turbine.util.TurbineException; |
| |
| /** |
| * When building sites using templates, Screens need only be defined |
| * for templates which require dynamic (database or object) data. |
| * |
| * <p> |
| * |
| * This page can be used on sites where the number of Screens can be |
| * much less than the number of templates. The templates can be |
| * grouped in directories with common layouts. Screen modules are |
| * then expected to be placed in packages corresponding with the |
| * templates' directories and follow a specific naming scheme. |
| * |
| * <p> |
| * |
| * The template parameter is parsed and and a Screen whose package |
| * matches the templates path and shares the same name minus any |
| * extension and beginning with a capital letter is searched for. If |
| * not found, a Screen in a package matching the template's path with |
| * name Default is searched for. If still not found, a Screen with |
| * name Default is looked for in packages corresponding to parent |
| * directories in the template's path until a match is found. |
| * |
| * <p> |
| * |
| * For example if data.getParameters().getString("template") returns |
| * /about_us/directions/driving.wm, the search follows |
| * about_us.directions.Driving, about_us.directions.Default, |
| * about_us.Default, Default, VelocitySiteScreen. |
| * |
| * <p> |
| * |
| * Only one Layout module is used, since it is expected that any |
| * dynamic content will be placed in navigations and screens. The |
| * layout template to be used is found in a similar way to the Screen. |
| * For example the following paths will be searched in the layouts |
| * subdirectory: /about_us/directions/driving.wm, |
| * /about_us/directions/default.wm, /about_us/default.wm, /default.wm. |
| * |
| * <p> |
| * |
| * This approach allows a site with largely static content to be |
| * updated and added to regularly by those with little Java |
| * experience. |
| * |
| * <p> |
| * |
| * The code is an almost a complete clone of the FreeMarkerSitePage |
| * written by John McNally. I've only modified it for Template use. |
| * |
| * @author <a href="mailto:mbryson@mont.mindspring.com">Dave Bryson</a> |
| * @author <a href="mailto:hps@intermeta.de">Henning P. Schmiedehausen</a> |
| * @author <a href="mailto:peter@courcoux.biz">Peter Courcoux</a> |
| * @version $Id$ |
| */ |
| public class DefaultPage |
| extends Page |
| { |
| /** Logging */ |
| protected Log log = LogFactory.getLog(this.getClass()); |
| |
| /** |
| * Builds the Page. |
| * |
| * @deprecated Use PipelineData version instead |
| * @param data Turbine information. |
| * @exception Exception, a generic exception. |
| */ |
| public void doBuild(RunData data) |
| throws Exception |
| { |
| // Template pages can use this to set up the context, so it is |
| // available to the Action and Screen. It does nothing here. |
| doBuildBeforeAction(data); |
| |
| // If an action has been defined, execute it here. Actions |
| // can re-define the template definition. |
| if (data.hasAction()) |
| { |
| ActionLoader.getInstance().exec(data, data.getAction()); |
| } |
| |
| // if a redirect was setup in data, don't do anything else |
| if (StringUtils.isNotEmpty(data.getRedirectURI())) |
| { |
| return; |
| } |
| |
| // Set the default doctype from the value given in |
| // TurbineResources.properties. |
| setDefaultDoctype(data); |
| |
| // Template pages can use this to set up default templates and |
| // associated class modules. It does nothing here. |
| doBuildAfterAction(data); |
| |
| String screenName = data.getScreen(); |
| |
| log.debug("Building " + screenName); |
| |
| // Ask the Screen for its Layout and then execute the Layout. |
| // The Screen can override the getLayout() method to re-define |
| // the Layout depending on data passed in via the |
| // data.parameters object. |
| ScreenLoader sl = ScreenLoader.getInstance(); |
| Screen aScreen = sl.getInstance(screenName); |
| String layout = aScreen.getLayout(data); |
| |
| // If the Layout has been set to be null, attempt to execute |
| // the Screen that has been defined. |
| if (layout != null) |
| { |
| LayoutLoader.getInstance().exec(data, layout); |
| } |
| else |
| { |
| ScreenLoader.getInstance().exec(data, screenName); |
| } |
| |
| // Do any post build actions (overridable by subclasses - |
| // does nothing here). |
| doPostBuild(data); |
| } |
| |
| /** |
| * Builds the Page. |
| * |
| * @param data Turbine information. |
| * @exception Exception, a generic exception. |
| */ |
| public void doBuild(PipelineData pipelineData) |
| throws Exception |
| { |
| RunData data = (RunData)getRunData(pipelineData); |
| // Template pages can use this to set up the context, so it is |
| // available to the Action and Screen. It does nothing here. |
| doBuildBeforeAction(pipelineData); |
| |
| // If an action has been defined, execute it here. Actions |
| // can re-define the template definition. |
| if (data.hasAction()) |
| { |
| ActionLoader.getInstance().exec(pipelineData, data.getAction()); |
| } |
| |
| // if a redirect was setup in data, don't do anything else |
| if (StringUtils.isNotEmpty(data.getRedirectURI())) |
| { |
| return; |
| } |
| |
| // Set the default doctype from the value given in |
| // TurbineResources.properties. |
| setDefaultDoctype(data); |
| |
| // Template pages can use this to set up default templates and |
| // associated class modules. It does nothing here. |
| doBuildAfterAction(pipelineData); |
| |
| String screenName = data.getScreen(); |
| |
| log.debug("Building " + screenName); |
| |
| // Ask the Screen for its Layout and then execute the Layout. |
| // The Screen can override the getLayout() method to re-define |
| // the Layout depending on data passed in via the |
| // data.parameters object. |
| ScreenLoader sl = ScreenLoader.getInstance(); |
| Screen aScreen = sl.getInstance(screenName); |
| String layout = aScreen.getLayout(pipelineData); |
| |
| // If the Layout has been set to be null, attempt to execute |
| // the Screen that has been defined. |
| if (layout != null) |
| { |
| LayoutLoader.getInstance().exec(pipelineData, layout); |
| } |
| else |
| { |
| ScreenLoader.getInstance().exec(pipelineData, screenName); |
| } |
| |
| // Do any post build actions (overridable by subclasses - |
| // does nothing here). |
| doPostBuild(pipelineData); |
| } |
| |
| |
| |
| /** |
| * Can be used by template Pages to stuff the Context into the |
| * RunData so that it is available to the Action module and the |
| * Screen module via getContext(). It does nothing here. |
| * |
| * @deprecated Use PipelineData version instead |
| * @param data Turbine information. |
| * @exception Exception, a generic exception. |
| */ |
| protected void doBuildBeforeAction(RunData data) |
| throws Exception |
| { |
| } |
| |
| /** |
| * Can be overridden by template Pages to set up data needed to |
| * process a template. It does nothing here. |
| * |
| * @deprecated Use PipelineData version instead |
| * @param data Turbine information. |
| * @exception Exception, a generic exception. |
| */ |
| protected void doBuildAfterAction(RunData data) |
| throws Exception |
| { |
| } |
| |
| /** |
| * Can be overridden to perform actions when the request is |
| * fully processed. It does nothing here. |
| * @deprecated Use PipelineData version instead |
| * @param data Turbine information. |
| * @exception Exception, a generic exception. |
| */ |
| protected void doPostBuild(RunData data) |
| throws Exception |
| { |
| } |
| |
| |
| /** |
| * Can be used by template Pages to stuff the Context into the |
| * RunData so that it is available to the Action module and the |
| * Screen module via getContext(). It does nothing here. |
| * |
| * @param data Turbine information. |
| * @exception Exception, a generic exception. |
| */ |
| protected void doBuildBeforeAction(PipelineData pipelineData) |
| throws Exception |
| { |
| } |
| |
| /** |
| * Can be overridden by template Pages to set up data needed to |
| * process a template. It does nothing here. |
| * |
| * @param data Turbine information. |
| * @exception Exception, a generic exception. |
| */ |
| protected void doBuildAfterAction(PipelineData pipelineData) |
| throws Exception |
| { |
| } |
| |
| /** |
| * Can be overridden to perform actions when the request is |
| * fully processed. It does nothing here. |
| * |
| * @param data Turbine information. |
| * @exception Exception, a generic exception. |
| */ |
| protected void doPostBuild(PipelineData pipelineData) |
| throws Exception |
| { |
| } |
| |
| |
| |
| /** |
| * Set the default Doctype. If Doctype is set to null, it will |
| * not be added. The default Doctype can be set in |
| * TurbineResources by using the single strings: Html40Strict, |
| * Html40Transitional, or Html40Frameset. Additionally the |
| * default can be supplied as two strings giving the dtd and uri. |
| * |
| * @param data Turbine information. |
| * @exception Exception, a generic exception. |
| */ |
| private void setDefaultDoctype(RunData data) |
| throws Exception |
| { |
| String errMsg = |
| "default.doctype property not set properly in TurbineResources.properties!"; |
| List doctypeProperty = |
| Turbine.getConfiguration().getList(TurbineConstants.DEFAULT_DOCUMENT_TYPE_KEY); |
| |
| if (doctypeProperty != null) |
| { |
| switch(doctypeProperty.size()) |
| { |
| case 0: |
| { |
| // Don't add a doctype. |
| break; |
| } |
| case 1: |
| { |
| String doc = (String) doctypeProperty.get(0); |
| if (doc.equalsIgnoreCase(TurbineConstants.DOCUMENT_TYPE_HTML40TRANSITIONAL)) |
| { |
| data.getPage().setDoctype(new Doctype.Html40Transitional()); |
| } |
| else if (doc.equalsIgnoreCase(TurbineConstants.DOCUMENT_TYPE_HTML40STRICT)) |
| { |
| data.getPage().setDoctype(new Doctype.Html40Strict()); |
| } |
| else if (doc.equalsIgnoreCase(TurbineConstants.DOCUMENT_TYPE_HTML40FRAMESET)) |
| { |
| data.getPage().setDoctype(new Doctype.Html40Frameset()); |
| } |
| else |
| { |
| throw new TurbineException(errMsg); |
| } |
| break; |
| } |
| case 2: |
| { |
| data.getPage() |
| .setDoctype(new Doctype() |
| .setIdentifier((String) doctypeProperty.get(0)) |
| .setUri((String) doctypeProperty.get(1))); |
| break; |
| } |
| default: |
| { |
| throw new TurbineException(errMsg); |
| } |
| } |
| } |
| } |
| } |