Java tutorial
/** * This file Copyright (c) 2010-2015 Magnolia International * Ltd. (http://www.magnolia-cms.com). All rights reserved. * * * This file is dual-licensed under both the Magnolia * Network Agreement and the GNU General Public License. * You may elect to use one or the other of these licenses. * * This file is distributed in the hope that it will be * useful, but AS-IS and WITHOUT ANY WARRANTY; without even the * implied warranty of MERCHANTABILITY or FITNESS FOR A * PARTICULAR PURPOSE, TITLE, or NONINFRINGEMENT. * Redistribution, except as permitted by whichever of the GPL * or MNA you select, is prohibited. * * 1. For the GPL license (GPL), you can redistribute and/or * modify this file under the terms of the GNU General * Public License, Version 3, as published by the Free Software * Foundation. You should have received a copy of the GNU * General Public License, Version 3 along with this program; * if not, write to the Free Software Foundation, Inc., 51 * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * 2. For the Magnolia Network Agreement (MNA), this file * and the accompanying materials are made available under the * terms of the MNA which accompanies this distribution, and * is available at http://www.magnolia-cms.com/mna.html * * Any modifications to this file must keep this entire header * intact. * */ package info.magnolia.dam.app.assets.field; import info.magnolia.context.MgnlContext; import info.magnolia.dam.app.ui.field.upload.AssetUploadReceiver; import info.magnolia.event.EventBus; import info.magnolia.i18nsystem.SimpleTranslator; import info.magnolia.jcr.util.NodeTypes; import info.magnolia.jcr.util.NodeUtil; import info.magnolia.objectfactory.Components; import info.magnolia.ui.api.action.ActionDefinition; import info.magnolia.ui.api.context.UiContext; import info.magnolia.ui.api.event.ChooseDialogEventBus; import info.magnolia.ui.api.overlay.OverlayCloser; import info.magnolia.ui.api.overlay.OverlayLayer.ModalityLevel; import info.magnolia.ui.api.view.View; import info.magnolia.ui.dialog.actionarea.ActionListener; import info.magnolia.ui.dialog.actionarea.renderer.ActionRenderer; import info.magnolia.ui.form.field.upload.UploadReceiver; import info.magnolia.ui.form.field.upload.basic.BasicUploadProgressIndicator; import info.magnolia.ui.framework.overlay.ViewAdapter; import info.magnolia.ui.vaadin.integration.jcr.JcrNodeItemId; import info.magnolia.ui.workbench.event.SelectionChangedEvent; import java.util.Set; import javax.inject.Inject; import javax.inject.Named; import javax.jcr.RepositoryException; import com.vaadin.ui.Button; import com.vaadin.ui.Button.ClickEvent; import com.vaadin.ui.CssLayout; import com.vaadin.ui.NativeButton; import com.vaadin.ui.UI; import com.vaadin.ui.Upload; import com.vaadin.ui.Upload.FailedEvent; import com.vaadin.ui.Upload.FailedListener; import com.vaadin.ui.Upload.FinishedEvent; import com.vaadin.ui.Upload.FinishedListener; import com.vaadin.ui.Upload.ProgressListener; import com.vaadin.ui.Upload.StartedEvent; import com.vaadin.ui.Upload.StartedListener; import com.vaadin.ui.Upload.SucceededEvent; import com.vaadin.ui.Upload.SucceededListener; /** * Renders and upload instead of a mere button. */ public class PermissionedUploadAssetActionRenderer implements ActionRenderer { private UiContext layer; private Upload upload; private UploadReceiver receiver; private ProgressPopup progressIndicator; private OverlayCloser progressIndicatorCloseHandle; private final SimpleTranslator i18n; /** * @deprecated since version 5.2.2, more detailed c-tor should be used * in order to handle upload button availability properly. */ @Deprecated public PermissionedUploadAssetActionRenderer(UiContext layer, SimpleTranslator i18n) { this.layer = layer; this.i18n = i18n; receiver = Components.newInstance(AssetUploadReceiver.class, i18n); } @Inject public PermissionedUploadAssetActionRenderer(UiContext layer, SimpleTranslator i18n, @Named(ChooseDialogEventBus.NAME) EventBus eventBus) { this.layer = layer; this.i18n = i18n; receiver = Components.newInstance(AssetUploadReceiver.class, i18n); eventBus.addHandler(SelectionChangedEvent.class, new SelectionChangedEvent.Handler() { @Override public void onSelectionChanged(SelectionChangedEvent event) { Set<Object> itemIds = event.getItemIds(); if (itemIds == null || itemIds.isEmpty()) { return; } try { JcrNodeItemId nodeItemId = (JcrNodeItemId) itemIds.iterator().next(); javax.jcr.Node node = MgnlContext.getJCRSession(nodeItemId.getWorkspace()) .getNodeByIdentifier(nodeItemId.getUuid()); boolean uploadAllowed = itemIds.size() == 1; if (uploadAllowed) { uploadAllowed &= NodeUtil.isNodeType(node, NodeTypes.Folder.NAME) || NodeUtil.getAncestors(node).isEmpty(); } if (uploadAllowed) uploadAllowed &= node.getSession().hasPermission(node.getPath(), "add_node"); upload.setEnabled(uploadAllowed); } catch (RepositoryException e) { upload.setEnabled(false); } } }); } @Override public View start(final ActionDefinition action, final ActionListener listener) { this.upload = new Upload(action.getLabel(), receiver) { @Override public void setCaption(String caption) { setButtonCaption(caption); } }; this.upload.addStartedListener(new StartedListener() { @Override public void uploadStarted(StartedEvent event) { UI.getCurrent().setPollInterval(1000); progressIndicator = new ProgressPopup(upload, i18n); progressIndicatorCloseHandle = layer.openOverlay(new ViewAdapter(progressIndicator), ModalityLevel.NON_MODAL); progressIndicator.progressIndicator.setProgress(0); progressIndicator.progressIndicator.setVisible(true); } }); this.upload.addFinishedListener(new FinishedListener() { @Override public void uploadFinished(FinishedEvent event) { UI.getCurrent().setPollInterval(-1); progressIndicatorCloseHandle.close(); } }); this.upload.addProgressListener(new ProgressListener() { @Override public void updateProgress(long readBytes, long contentLength) { progressIndicator.progressIndicator.refreshLayout(readBytes, contentLength, receiver.getFileName()); } }); this.upload.addFailedListener(new FailedListener() { @Override public void uploadFailed(FailedEvent event) { progressIndicatorCloseHandle.close(); } }); this.upload.addSucceededListener(new SucceededListener() { @Override public void uploadSucceeded(SucceededEvent event) { listener.onActionFired(action.getName(), upload.getReceiver()); } }); this.upload.setImmediate(true); return new ViewAdapter(upload); } private static class ProgressPopup extends CssLayout { public BasicUploadProgressIndicator progressIndicator; private ProgressPopup(final Upload upload, final SimpleTranslator i18n) { addStyleName("direct-upload-progress-indicator"); addStyleName("upload-image-field"); CssLayout indicatorWrapper = new CssLayout(); indicatorWrapper.addStyleName("in-progress"); addComponent(indicatorWrapper); String inProgressCaption = "field.upload.basic.uploading.file"; String inProgressRatioCaption = "field.upload.basic.uploaded.file"; this.progressIndicator = new BasicUploadProgressIndicator(inProgressCaption, inProgressRatioCaption, i18n); indicatorWrapper.addComponent(progressIndicator); Button cancelButton = new NativeButton(null, new Button.ClickListener() { @Override public void buttonClick(ClickEvent event) { if (upload.isUploading()) { upload.interruptUpload(); } } }); cancelButton.addStyleName("cancel"); indicatorWrapper.addComponent(cancelButton); } } }