Java tutorial
/** * Copyright (c) 2008-2012 The Sakai Foundation * * Licensed under the Educational Community 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.osedu.org/licenses/ECL-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.sakaiproject.profile2.tool.pages.panels; import org.apache.log4j.Logger; import org.apache.wicket.RestartResponseException; import org.apache.wicket.ajax.AjaxRequestTarget; import org.apache.wicket.extensions.ajax.markup.html.IndicatingAjaxButton; import org.apache.wicket.markup.html.WebMarkupContainer; import org.apache.wicket.markup.html.basic.Label; import org.apache.wicket.markup.html.form.Form; import org.apache.wicket.markup.html.form.SubmitLink; import org.apache.wicket.markup.html.form.upload.FileUpload; import org.apache.wicket.markup.html.form.upload.FileUploadField; import org.apache.wicket.markup.html.panel.FeedbackPanel; import org.apache.wicket.markup.html.panel.Panel; import org.apache.wicket.model.ResourceModel; import org.apache.wicket.model.StringResourceModel; import org.apache.wicket.spring.injection.annot.SpringBean; import org.apache.wicket.util.lang.Bytes; import org.sakaiproject.profile2.logic.ProfileImageLogic; import org.sakaiproject.profile2.logic.ProfileWallLogic; import org.sakaiproject.profile2.logic.SakaiProxy; import org.sakaiproject.profile2.tool.components.CloseButton; import org.sakaiproject.profile2.tool.components.JavascriptEventConfirmation; import org.sakaiproject.profile2.tool.pages.MyProfile; import org.sakaiproject.profile2.util.ProfileConstants; import org.sakaiproject.profile2.util.ProfileUtils; public class ChangeProfilePictureUpload extends Panel { private static final long serialVersionUID = 1L; private FileUploadField uploadField; @SpringBean(name = "org.sakaiproject.profile2.logic.SakaiProxy") private SakaiProxy sakaiProxy; @SpringBean(name = "org.sakaiproject.profile2.logic.ProfileImageLogic") private ProfileImageLogic imageLogic; @SpringBean(name = "org.sakaiproject.profile2.logic.ProfileWallLogic") private ProfileWallLogic wallLogic; private static final Logger log = Logger.getLogger(ChangeProfilePictureUpload.class); private FeedbackPanel feedback; /** * Default constructor if modifying own */ public ChangeProfilePictureUpload(String id) { super(id); log.debug("ChangeProfilePictureUpload()"); //get user for this profile and render it String userUuid = sakaiProxy.getCurrentUserId(); renderChangeProfilePictureUpload(userUuid); } /** * This constructor only called if we were a superuser editing someone else's picture. * An additional catch is also in place. * @param id component id * @param userUuid uuid of other user */ public ChangeProfilePictureUpload(String id, String userUuid) { super(id); log.debug("ChangeProfilePictureUpload(" + userUuid + ")"); //double check only super users if (!sakaiProxy.isSuperUser()) { log.error("ChangeProfilePictureUpload: user " + sakaiProxy.getCurrentUserId() + " attempted to access ChangeProfilePictureUpload for " + userUuid + ". Redirecting..."); throw new RestartResponseException(new MyProfile()); } //render for given user renderChangeProfilePictureUpload(userUuid); } /** * Does the actual rendering of the panel * @param userUuid */ private void renderChangeProfilePictureUpload(final String userUuid) { //setup form Form<Void> form = new Form<Void>("form") { private static final long serialVersionUID = 1L; public void onSubmit() { //get file that was uploaded FileUpload upload = uploadField.getFileUpload(); if (upload == null) { log.error("Profile.ChangeProfilePicture.onSubmit: upload was null."); //error(new StringResourceModel("error.no.file.uploaded", this, null).getString()); feedback.setDefaultModel(new ResourceModel("error.no.file.uploaded")); return; } else if (upload.getSize() == 0) { log.error("Profile.ChangeProfilePicture.onSubmit: upload was empty."); //error(new StringResourceModel("error.empty.file.uploaded", this, null).getString()); feedback.setDefaultModel(new ResourceModel("error.empty.file.uploaded")); return; } else if (!ProfileUtils.checkContentTypeForProfileImage(upload.getContentType())) { log.error( "Profile.ChangeProfilePicture.onSubmit: invalid file type uploaded for profile picture"); //error(new StringResourceModel("error.invalid.image.type", this, null).getString()); feedback.setDefaultModel(new ResourceModel("error.invalid.image.type")); return; } else { String mimeType = upload.getContentType(); //String fileName = upload.getClientFileName(); //ok so get bytes of file uploaded byte[] imageBytes = upload.getBytes(); //add image using ProfileImageLogic which scales and sets up CHS automatically if (imageLogic.setUploadedProfileImage(userUuid, imageBytes, mimeType, null)) { //log it log.info("User " + userUuid + " successfully changed profile picture by upload."); //post update event sakaiProxy.postEvent(ProfileConstants.EVENT_PROFILE_IMAGE_CHANGE_UPLOAD, "/profile/" + userUuid, true); if (true == sakaiProxy.isWallEnabledGlobally() && false == sakaiProxy.isSuperUserAndProxiedToUser(userUuid)) { wallLogic.addNewEventToWall(ProfileConstants.EVENT_PROFILE_IMAGE_CHANGE_UPLOAD, sakaiProxy.getCurrentUserId()); } //refresh image data if (sakaiProxy.isSuperUserAndProxiedToUser(userUuid)) { setResponsePage(new MyProfile(userUuid)); } else { setResponsePage(new MyProfile()); } } else { //error(new StringResourceModel("error.file.save.failed", this, null).getString()); feedback.setDefaultModel(new ResourceModel("error.file.save.failed")); return; } } } }; //get the max upload size from Sakai int maxSize = sakaiProxy.getMaxProfilePictureSize(); //setup form form.setMaxSize(Bytes.megabytes(maxSize)); form.setOutputMarkupId(true); form.setMultiPart(true); //add warning message if superUser and not editing own image Label editWarning = new Label("editWarning"); editWarning.setVisible(false); if (sakaiProxy.isSuperUserAndProxiedToUser(userUuid)) { editWarning.setDefaultModel(new StringResourceModel("text.edit.other.warning", null, new Object[] { sakaiProxy.getUserDisplayName(userUuid) })); editWarning.setEscapeModelStrings(false); editWarning.setVisible(true); } form.add(editWarning); //close button component CloseButton closeButton = new CloseButton("closeButton", this); closeButton.setOutputMarkupId(true); form.add(closeButton); //text Label textSelectImage = new Label("textSelectImage", new StringResourceModel("text.upload.image.file", null, new Object[] { maxSize })); form.add(textSelectImage); //upload uploadField = new FileUploadField("picture"); uploadField.setMarkupId("pictureupload"); uploadField.setOutputMarkupId(true); form.add(uploadField); //feedback for form submit action feedback = new FeedbackPanel("feedback"); feedback.setOutputMarkupId(true); form.add(feedback); //submit button IndicatingAjaxButton submitButton = new IndicatingAjaxButton("submit", new ResourceModel("button.upload")) { private static final long serialVersionUID = 1L; @Override protected void onSubmit(AjaxRequestTarget target, Form<?> form) { target.add(feedback); } // update feedback panel if validation failed protected void onError(AjaxRequestTarget target, Form form) { log.debug("ChangeProfilePictureUpload.onSubmit validation failed."); target.add(feedback); } }; form.add(submitButton); //remove link final boolean isDefault = imageLogic.profileImageIsDefault(userUuid); WebMarkupContainer orRemove = new WebMarkupContainer("orRemove") { public boolean isVisible() { return !isDefault; //only show if its not default } }; SubmitLink removeLink = new SubmitLink("remove") { @Override public void onSubmit() { boolean removed = imageLogic.resetProfileImage(userUuid); if (removed) { //refresh image data if (sakaiProxy.isSuperUserAndProxiedToUser(userUuid)) { setResponsePage(new MyProfile(userUuid)); } else { setResponsePage(new MyProfile()); } } } }; removeLink.setDefaultFormProcessing(false); //don't let it submit the form removeLink.add( new JavascriptEventConfirmation("onclick", new ResourceModel("link.image.current.remove.confirm"))); orRemove.add(removeLink); form.add(orRemove); //add form to page add(form); } }