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Viewing changes to com.bdaum.zoom.operations/src/com/bdaum/zoom/operations/internal/DeleteVoicenoteOperation.java

  • Committer: bdaum
  • Date: 2015-12-26 10:21:51 UTC
  • Revision ID: berthold.daum@bdaum.de-20151226102151-44f1j5113167thb9
Version 2.4.0

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com.bdaum.zoom.operations/src/com/bdaum/zoom/operations/internal/DeleteVoicenoteOperation.java
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/*
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 * This file is part of the ZoRa project: http://www.photozora.org.
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 *
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 * ZoRa is free software; you can redistribute it and/or modify
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 * it under the terms of the GNU General Public License as published by
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 * the Free Software Foundation; either version 2 of the License, or
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 * (at your option) any later version.
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 *
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 * ZoRa is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 * GNU General Public License for more details.
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 *
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 * You should have received a copy of the GNU General Public License
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 * along with ZoRa; if not, write to the Free Software
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 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
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 *
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 * (c) 2009 Berthold Daum  (berthold.daum@bdaum.de)
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 */
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package com.bdaum.zoom.operations.internal;
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import java.io.File;
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import java.net.URI;
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import java.util.ArrayList;
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import java.util.Date;
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import java.util.HashSet;
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import java.util.List;
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import java.util.Set;
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import org.eclipse.core.commands.ExecutionException;
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import org.eclipse.core.runtime.IAdaptable;
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import org.eclipse.core.runtime.IProgressMonitor;
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import org.eclipse.core.runtime.IStatus;
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import org.eclipse.core.runtime.jobs.Job;
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import org.eclipse.osgi.util.NLS;
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import com.bdaum.zoom.cat.model.asset.Asset;
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import com.bdaum.zoom.core.Constants;
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import com.bdaum.zoom.core.Core;
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import com.bdaum.zoom.core.IVolumeManager;
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import com.bdaum.zoom.core.db.IDbErrorHandler;
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import com.bdaum.zoom.operations.DbOperation;
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import com.bdaum.zoom.operations.IProfiledOperation;
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public class DeleteVoicenoteOperation extends DbOperation {
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        private List<Asset> assets;
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        public DeleteVoicenoteOperation(List<Asset> assets) {
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                super(Messages.getString("DeleteVoicenoteOperation.Delete_voice_notes")); //$NON-NLS-1$
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                this.assets = assets;
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                this.date = new Date();
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        }
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        @Override
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        public IStatus execute(IProgressMonitor aMonitor, final IAdaptable info)
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                        throws ExecutionException {
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                final Set<String> volumes = new HashSet<String>();
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                final List<String> errands = new ArrayList<String>();
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                init(aMonitor, assets.size() + 2);
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                boolean deleted = false;
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                IVolumeManager volumeManager = Core.getCore().getVolumeManager();
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                for (Asset asset : assets) {
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                        if (asset.getFileState() != IVolumeManager.PEER) {
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                                if (".".equals(asset.getVoiceFileURI())) { //$NON-NLS-1$
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                                        URI uri = volumeManager.findFile(asset);
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                                        if (uri != null) {
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                                                if (volumeManager.findExistingFile(asset, true) != null) {
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                                                        deleted |= deleteVoiceNote(asset);
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                                                } else {
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                                                        String volume = asset.getVolume();
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                                                        if (volume != null && volume.length() > 0)
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                                                                volumes.add(volume);
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                                                        errands.add(uri.toString());
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                                                }
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                                        }
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                                } else
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                                        deleted |= deleteVoiceNote(asset);
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                                if (aMonitor.isCanceled())
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                                        return abort();
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                        }
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                }
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                if (deleted)
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                        fireAssetsModified(assets, null);
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                if (errands.size() > 0) {
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                        final IDbErrorHandler errorHandler = Core.getCore()
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                                        .getErrorHandler();
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                        if (errorHandler != null) {
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                                String msg;
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                                if (errands.size() == 1) {
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                                        msg = NLS
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                                                        .bind(Messages
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                                                                        .getString("DeleteVoicenoteOperation.File_offline"), //$NON-NLS-1$
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                                                                        errands.get(0), volumes.toArray()[0]);
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                                } else {
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                                        StringBuffer sb = new StringBuffer();
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                                        for (String volume : volumes) {
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                                                if (sb.length() > 0)
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                                                        sb.append(", "); //$NON-NLS-1$
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                                                sb.append(volume);
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                                        }
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                                        msg = NLS
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                                                        .bind(Messages
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                                                                        .getString("DeleteVoicenoteOperation.Files_offline"), //$NON-NLS-1$
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                                                                        errands.size(), sb.toString());
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                                }
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                                errorHandler
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                                                .showInformation(
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                                                                Messages.getString("DeleteVoicenoteOperation.Unable_to_delete"), //$NON-NLS-1$
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                                                                msg, info);
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                        }
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                }
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                assets = null;
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                return close(info);
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        }
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        private boolean deleteVoiceNote(Asset asset) {
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                String voiceFileURI = asset.getVoiceFileURI();
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                if (voiceFileURI != null && voiceFileURI.length() > 0) {
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                        if (".".equals(voiceFileURI)) { //$NON-NLS-1$
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                                IVolumeManager volumeManager = Core.getCore()
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                                                .getVolumeManager();
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                                URI uri = volumeManager.findVoiceFile(asset);
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                                if (uri != null && Constants.FILESCHEME.equals(uri.getScheme()))
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                                        new File(uri).delete();
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                        }
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                        asset.setVoiceFileURI(null);
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                        storeSafely(null, 1, asset);
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                        return true;
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                }
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                return false;
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        }
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        @Override
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        public boolean canRedo() {
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                return false;
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        }
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        @Override
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        public IStatus redo(IProgressMonitor aMonitor, IAdaptable info)
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                        throws ExecutionException {
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                return null;
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        }
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        @Override
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        public boolean canUndo() {
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                return false;
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        }
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        @Override
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        public IStatus undo(IProgressMonitor aMonitor, IAdaptable info)
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                        throws ExecutionException {
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                return null;
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        }
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        public int getExecuteProfile() {
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                return IProfiledOperation.CONTENT;
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        }
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        public int getUndoProfile() {
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                return 0;
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        }
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        @Override
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        public int getPriority() {
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                return assets.size() > 3 ? Job.LONG : Job.SHORT;
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        }
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}