Java tutorial
/* * This library is part of OpenCms - * the Open Source Content Management System * * Copyright (c) Alkacon Software GmbH & Co. KG (http://www.alkacon.com) * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * For further information about Alkacon Software, please see the * company website: http://www.alkacon.com * * For further information about OpenCms, please see the * project website: http://www.opencms.org * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ package org.opencms.ui.components; import org.opencms.ui.shared.components.CmsUploadState; import org.opencms.ui.shared.rpc.I_CmsUploadRpc; import java.util.ArrayList; import java.util.List; import com.vaadin.server.Resource; import com.vaadin.ui.Button; /** * The upload button.<p> */ public class CmsUploadButton extends Button implements I_CmsUploadRpc { /** * Upload listener interface.<p> */ public interface I_UploadListener { /** * Called once the upload is finished.<p> * * @param uploadedFiles the uploaded files root paths */ void onUploadFinished(List<String> uploadedFiles); } /** Serial version id. */ private static final long serialVersionUID = -8591991683786743571L; /** The upoad listeners. */ private List<I_UploadListener> m_uploadListener; /** * Constructor.<p> * * @param icon the button icon * @param targetFolderRootPath the target folder path */ public CmsUploadButton(Resource icon, String targetFolderRootPath) { this(targetFolderRootPath); setIcon(icon); } /** * Constructor.<p> * * @param targetFolderRootPath the upload target folder root path */ public CmsUploadButton(String targetFolderRootPath) { super(); registerRpc(this); m_uploadListener = new ArrayList<I_UploadListener>(); getState().setTargetFolderRootPath(targetFolderRootPath); } /** * Adds an upload listener.<p> * * @param listener the listener instance */ public void addUploadListener(I_UploadListener listener) { m_uploadListener.add(listener); } /** * @see org.opencms.ui.shared.rpc.I_CmsUploadRpc#onUploadFinished(java.util.List) */ public void onUploadFinished(List<String> uploadedFiles) { for (I_UploadListener listener : m_uploadListener) { listener.onUploadFinished(uploadedFiles); } } /** * Removes the given upload listener.<p> * * @param listener the listener to remove */ public void removeUploadListener(I_UploadListener listener) { m_uploadListener.remove(listener); } /** * Sets the upload target folder.<p> * * @param targetFolder the upload target */ public void setTargetFolder(String targetFolder) { getState().setTargetFolderRootPath(targetFolder); } /** * @see com.vaadin.ui.AbstractComponent#getState() */ @Override protected CmsUploadState getState() { return (CmsUploadState) super.getState(); } }