UploadProjectPanel.java

package org.vaadin.mideaas.app;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.Arrays;
import java.util.HashSet;
import java.util.LinkedList;
import java.util.Set;

import org.vaadin.mideaas.frontend.Icons;
import org.vaadin.mideaas.model.SharedProject;

import com.vaadin.ui.Notification;
import com.vaadin.ui.Panel;
import com.vaadin.ui.Upload;
import com.vaadin.ui.Upload.FailedEvent;
import com.vaadin.ui.Upload.SucceededEvent;

@SuppressWarnings("serial")
public class UploadProjectPanel extends Panel implements Upload.Receiver,
		Upload.SucceededListener, Upload.FailedListener {

	// http://stackoverflow.com/questions/856013/mime-type-for-zip-file-in-google-chrome
	private final static Set<String> ZIP_MIMETYPES = new HashSet<String>(
			Arrays.asList(new String[] {
					"application/zip",
					"application/x-zip",
					"application/octet-stream",
					"application/x-zip-compressed"
			}));
	
	public interface ProjectUploadListener {
		public void projectUploaded(SharedProject p);
	}
	private LinkedList<ProjectUploadListener> listeners = new LinkedList<ProjectUploadListener>();
	public void addListener(ProjectUploadListener li) {
		listeners.add(li);
	}
	
	private Upload upload = new Upload("Upload project zip file", this);
	
	private File file;

	private final MideaasUI ui;

	public UploadProjectPanel(MideaasUI ui) {
		super("Upload Project");
		
		upload.addSucceededListener((Upload.SucceededListener) this);
		upload.addFailedListener((Upload.FailedListener) this);

		setIcon(Icons.BOX_LABEL);
		
		this.setContent(upload);
		this.setWidth("100%");
		this.ui =ui;
	}

	public OutputStream receiveUpload(String filename, String mimeType) {
		FileOutputStream fos = null;
		try {
			file = File.createTempFile(filename, ".zip");
			fos = new FileOutputStream(file);
		} catch (IOException e) {
			e.printStackTrace();
			return null;
		}
		return fos;
	}

	public void uploadFailed(FailedEvent event) {
		Notification.show("Upload failed: " + event.getReason());
	}

	public void uploadSucceeded(SucceededEvent event) {
		// Is this the right way to test if it's a zip file??
		if (ZIP_MIMETYPES.contains(event.getMIMEType())) {
			ui.uploadProject(file);
		} else {
			Notification.show("Not a zip file. The mimetype is " +event.getMIMEType());
		}
	}
	
//	private void createProject(Properties props, File dir) {
//		createProject(props.getProperty("PROJECT_NAME"),
//				ProjectType.valueOf(props.getProperty("PROJECT_TYPE")), dir);
//	}

/*	private void createProject(final String name, final ProjectType type, final File dir) {
		Project p = Project.createProjectIfNotExist(name, type, false);
		if (p==null) {
			final Window main = getWindow();
			final ConfirmResetDialog dia = new ConfirmResetDialog(name);
			dia.overwrite.addListener(new ClickListener() {
				public void buttonClick(ClickEvent event) {
					main.removeWindow(dia);
					Project p = Project.getProject(name);
					if (p==null) {
						unlucky();
					}
					else {
						p.resetFromDisk(dir);
						fireProjectUpload(p);
					}
				}
			});
			main.addWindow(dia);
		}
		else {
			p.resetFromDisk(dir);
			fireProjectUpload(p);
		}
	}
	
	private void unlucky() {
		getWindow().showNotification("Something strange happened :(", Notification.TYPE_ERROR_MESSAGE);
	}
*/
	
/*	
	private Properties projectProps(File dir) {
		File f = new File(dir, "project.properties");
		try {
			Properties props = PropertiesUtil.getProperties(f);
			if (props.containsKey("PROJECT_TYPE")) {
				return props;
			}
		} catch (IOException e) {
			
		}
		return null;
	}
	*/
//	private class ConfirmResetDialog extends Window {
		
//		Button cancel = new Button("Cancel");
//		Button overwrite = new Button();
		
		// TODO: Allow renaming project if the name already exists.
		// For that, the packages, folders etc. must be renamed too.
		
		//TextField newName = new TextField("Use Another Name:");
		//Button rename = new Button("Create New");
		
/*		public ConfirmResetDialog(String name) {
			super(name +" already exists");
			setModal(true);
			setResizable(false);
			setWidth("300px");
			addComponent(new Label("Project called '"+name+"' already exists."));
			addComponent(new Label("What to do?"));
			HorizontalLayout ho = new HorizontalLayout();
			ho.addComponent(cancel);
			ho.addComponent(overwrite);
			overwrite.setCaption("Overwrite "+name);
			VerticalLayout ho2 = new VerticalLayout();
			addComponent(ho);
			addComponent(ho2);
			cancel.addListener(new ClickListener() {
				public void buttonClick(ClickEvent event) {
					ConfirmResetDialog.this.close();
				}
			});
		}*/
	//}
}