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Java > Open Source Codes > com > blandware > atleap > webapp > action > core > contentResource > image > CallUpdateImageAction


1 /*
2  * Copyright 2004 Blandware (http://www.blandware.com)
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  * http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 package com.blandware.atleap.webapp.action.core.contentResource.image;
17
18 import com.blandware.atleap.common.Constants;
19 import com.blandware.atleap.model.core.ContentImage;
20 import com.blandware.atleap.service.core.ContentResourceManager;
21 import com.blandware.atleap.webapp.action.core.BaseAction;
22 import com.blandware.atleap.webapp.form.core.ImageForm;
23 import com.blandware.atleap.webapp.form.core.UploadContentResourceForm;
24 import com.blandware.atleap.webapp.util.core.ImageUtil;
25 import com.blandware.atleap.webapp.util.core.ResourceTypesManager;
26 import com.blandware.atleap.webapp.util.core.WebappConstants;
27 import com.blandware.atleap.webapp.util.core.WebappUtil;
28 import org.apache.struts.action.ActionForm;
29 import org.apache.struts.action.ActionForward;
30 import org.apache.struts.action.ActionMapping;
31 import org.apache.struts.action.ActionMessage;
32 import org.apache.struts.action.ActionMessages;
33 import org.apache.struts.upload.FormFile;
34
35 import javax.imageio.IIOImage JavaDoc;
36 import javax.servlet.http.HttpServletRequest JavaDoc;
37 import javax.servlet.http.HttpServletResponse JavaDoc;
38
39 /**
40  * <p>Prepares form bean to update image
41  * </p>
42  * <p><a HREF="CallUpdateImageAction.java.htm"><i>View Source</i></a></p>
43  * <p/>
44  *
45  * @author Andrey Grebnev <a HREF="mailto:andrey.grebnev@blandware.com">&lt;andrey.grebnev@blandware.com&gt;</a>
46  * @author Sergey Zubtcovskii <a HREF="mailto:sergey.zubtcovskii@blandware.com">&lt;sergey.zubtcovskii@blandware.com&gt;</a>
47  * @version $Revision: 1.9 $ $Date: 2006/03/10 17:10:23 $
48  * @struts.action path="/core/contentResource/image/callUpdate"
49  * name="imageForm"
50  * scope="request"
51  * validate="false"
52  * roles="core-contentResource-update"
53  * @struts.action-forward name="updateImage"
54  * path=".core.contentResource.image.update"
55  * @struts.action-forward name="callUpdateContentResource"
56  * path="/core/contentResource/callUpdate.do"
57  * @struts.action-forward name="listContentResources"
58  * path="/core/contentResource/list.do"
59  * redirect="false"
60  */
61 public final class CallUpdateImageAction extends BaseAction {
62     /**
63      * @param mapping The ActionMapping used to select this instance
64      * @param form The optional ActionForm bean for this request (if any)
65      * @param request The HTTP request we are proceeding
66      * @param response The HTTP response we are creating
67      * @return an ActionForward instance describing where and how
68      * control should be forwarded, or null if response
69      * has already been completed
70      */
71     public ActionForward execute(ActionMapping mapping, ActionForm form,
72                                  HttpServletRequest JavaDoc request, HttpServletResponse JavaDoc response) throws Exception JavaDoc {
73
74         Long JavaDoc contentResourceId = null;
75         if ( ((ImageForm) form).getId() != null ) {
76             contentResourceId = Long.valueOf(((ImageForm) form).getId());
77         } else if ( request.getParameter("contentResourceId") != null ) {
78             contentResourceId = Long.valueOf(request.getParameter("contentResourceId"));
79         } else if ( request.getAttribute(WebappConstants.CONTENT_RESOURCE_ID_KEY) != null ) {
80             contentResourceId = (Long JavaDoc) request.getAttribute(WebappConstants.CONTENT_RESOURCE_ID_KEY);
81         } else {
82             if ( log.isWarnEnabled() ) {
83                 log.warn("Missing required parameter 'contentResourceId'");
84             }
85             return mapping.getInputForward();
86         }
87
88         ContentResourceManager contentResourceManager = (ContentResourceManager) getBean(Constants.CONTENT_RESOURCE_MANAGER_BEAN);
89         ContentImage image = contentResourceManager.retrieveContentImage(contentResourceId);
90         if ( image == null ) {
91             // image not found. it might be deleted by someone else
92 ActionMessages errors = new ActionMessages();
93             errors.add("imageNotFound", new ActionMessage("core.contentResource.image.errors.notFound"));
94             saveErrors(request, errors);
95             return mapping.findForward("listContentResources");
96         }
97
98         request.setAttribute("image", image);
99
100         ImageForm imageForm = (ImageForm) form;
101         WebappUtil.copyProperties(imageForm, image, request);
102
103         //setup uri
104 String JavaDoc uri = image.getUri();
105         if ( uri.startsWith(Constants.RESOURCES_URI_PREFIX) ) {
106             uri = uri.substring(Constants.RESOURCES_URI_PREFIX.length());
107         }
108         imageForm.setUri(uri);
109
110         ResourceTypesManager resourceTypesManager = ResourceTypesManager.getInstance(request.getSession().getServletContext());
111
112         UploadContentResourceForm uploadContentResourceForm = (UploadContentResourceForm) request.getSession().getAttribute(WebappConstants.UPLOAD_CONTENT_RESOURCE_FORM_KEY);
113         FormFile formFile = null;
114         if ( uploadContentResourceForm != null ) {
115             formFile = uploadContentResourceForm.getFile();
116         }
117         if ( formFile != null && formFile.getFileName() != null && formFile.getFileName().trim().length() > 0 && formFile.getFileSize() > 0 ) {
118             String JavaDoc fileName = formFile.getFileName();
119             String JavaDoc mimeType = resourceTypesManager.getMimeTypeByFileName(fileName);
120
121             byte[] newImageData = formFile.getFileData();
122
123             try {
124                 IIOImage JavaDoc newSource = ImageUtil.decodeImage(newImageData, mimeType);
125                 request.getSession().setAttribute(WebappConstants.CONTENT_IMAGE_NEW_WIDTH_KEY, new Integer JavaDoc(newSource.getRenderedImage().getWidth()));
126                 request.getSession().setAttribute(WebappConstants.CONTENT_IMAGE_NEW_HEIGHT_KEY, new Integer JavaDoc(newSource.getRenderedImage().getHeight()));
127             } catch ( Exception JavaDoc ex ) {
128                 if ( formFile != null ) {
129                     formFile.destroy();
130                 }
131                 request.getSession().removeAttribute(WebappConstants.UPLOAD_CONTENT_RESOURCE_FORM_KEY);
132
133                 ActionMessages errors = new ActionMessages();
134                 errors.add("contentResourceCorruptedData", new ActionMessage("core.contentResource.errors.corruptedData"));
135                 saveErrors(request, errors);
136                 return mapping.findForward("callUpdateContentResource");
137             }
138
139             request.getSession().setAttribute(WebappConstants.CONTENT_IMAGE_NEW_MIMETYPE_KEY, mimeType);
140             request.getSession().setAttribute(WebappConstants.CONTENT_IMAGE_NEW_SIZE_KEY, new Long JavaDoc(formFile.getFileData().length));
141             request.getSession().setAttribute(WebappConstants.CONTENT_IMAGE_NEW_FILENAME_KEY, formFile.getFileName());
142
143         } else {
144             request.getSession().removeAttribute(WebappConstants.CONTENT_IMAGE_NEW_MIMETYPE_KEY);
145             request.getSession().removeAttribute(WebappConstants.CONTENT_IMAGE_NEW_SIZE_KEY);
146             request.getSession().removeAttribute(WebappConstants.CONTENT_IMAGE_NEW_FILENAME_KEY);
147         }
148
149         saveToken(request);
150         return mapping.findForward("updateImage");
151     }
152
153 }
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