/*
* Copyright (c) 2013, grossmann
* All rights reserved.
*
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* modification, are permitted provided that the following conditions are met:
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* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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package org.jowidgets.addons.widgets.download.impl.filechooser;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.List;
import org.jowidgets.addons.widgets.download.api.IDownloadButton;
import org.jowidgets.addons.widgets.download.api.IDownloadButtonBluePrint;
import org.jowidgets.api.command.IAction;
import org.jowidgets.api.image.Icons;
import org.jowidgets.api.threads.IUiThreadAccess;
import org.jowidgets.api.toolkit.Toolkit;
import org.jowidgets.api.types.QuestionResult;
import org.jowidgets.api.widgets.IButton;
import org.jowidgets.api.widgets.IFileChooser;
import org.jowidgets.api.widgets.blueprint.IFileChooserBluePrint;
import org.jowidgets.common.image.IImageConstant;
import org.jowidgets.common.types.DialogResult;
import org.jowidgets.common.types.FileChooserType;
import org.jowidgets.common.widgets.controller.IActionListener;
import org.jowidgets.i18n.api.IMessage;
import org.jowidgets.tools.widgets.blueprint.BPF;
import org.jowidgets.tools.widgets.wrapper.ButtonWrapper;
import org.jowidgets.util.EmptyCheck;
import org.jowidgets.util.io.FileUtils;
class DownloadButtonImpl extends ButtonWrapper implements IDownloadButton {
private static final IMessage OVERRIDE_TITLE = Messages.getMessage("DownloadButtonImpl.override_title");
private static final IMessage OVERRIDE_CONFIRMATION = Messages.getMessage("DownloadButtonImpl.override_confirmation");
private final IButton button;
private String urlString;
private File lastFolder;
DownloadButtonImpl(final IButton button, final IDownloadButtonBluePrint bluePrint) {
super(button);
this.button = getWidget();
button.addActionListener(new DownloadActionListener());
button.setEnabled(false);
if (!EmptyCheck.isEmpty(bluePrint.getUrl())) {
setUrl(bluePrint.getUrl());
}
}
@Override
protected IButton getWidget() {
return super.getWidget();
}
@Override
public void setUrl(final String url) {
try {
new URL(url);
this.urlString = url;
}
catch (final MalformedURLException e) {
this.urlString = null;
}
button.setEnabled(!EmptyCheck.isEmpty(this.urlString));
}
@Override
public String getUrl() {
return urlString;
}
@Override
public void download() {
if (!EmptyCheck.isEmpty(urlString)) {
try {
download(new URL(urlString));
}
catch (final MalformedURLException e) {
}
}
}
private void download(final URL url) {
final IFileChooserBluePrint fileChooserBp = BPF.fileChooser(FileChooserType.SAVE);
final IFileChooser fileChooser = Toolkit.getActiveWindow().createChildWindow(fileChooserBp);
final String fileName = url.getPath();
if (!EmptyCheck.isEmpty(fileName)) {
final File file = new File(fileName);
final File simpleFile;
if (lastFolder != null) {
final String parent = lastFolder.getParent();
if (parent != null) {
simpleFile = new File(parent, file.getName());
}
else {
simpleFile = new File(file.getName());
}
}
else {
simpleFile = new File(file.getName());
}
fileChooser.setSelectedFile(simpleFile);
}
if (DialogResult.OK == fileChooser.open()) {
final List<File> selectedFiles = fileChooser.getSelectedFiles();
if (!EmptyCheck.isEmpty(selectedFiles)) {
this.lastFolder = selectedFiles.iterator().next();
download(url, lastFolder);
}
}
}
private void download(final URL url, final File file) {
if (file.exists()) {
final String title = OVERRIDE_TITLE.get();
final String question = OVERRIDE_CONFIRMATION.get();
final QuestionResult questionResult = Toolkit.getQuestionPane().askYesNoQuestion(title, question);
if (QuestionResult.NO == questionResult) {
return;
}
}
try {
download(url.openStream(), file);
}
catch (final IOException e) {
throw new RuntimeException(e);
}
}
private void download(final InputStream inputStream, final File file) {
//TODO MG use a dialog that shows the progress and that can be canceled
final IUiThreadAccess uiThreadAccess = Toolkit.getUiThreadAccess();
final Thread worker = new Thread(new Runnable() {
@Override
public void run() {
try {
FileUtils.inputStreamToFile(inputStream, file);
}
catch (final Exception e) {
final String title = "Failed";
final String message = "Download failed!\n" + e.getLocalizedMessage();
showMessageInUiThread(uiThreadAccess, Icons.ERROR, title, message);
}
finally {
FileUtils.tryCloseSilent(inputStream);
}
final String title = "Finished";
final String message = "File downloaded successfully!";
showMessageInUiThread(uiThreadAccess, Icons.INFO, title, message);
}
});
worker.setDaemon(true);
worker.start();
}
private void showMessageInUiThread(
final IUiThreadAccess uiThreadAccess,
final IImageConstant icon,
final String title,
final String message) {
uiThreadAccess.invokeLater(new Runnable() {
@Override
public void run() {
Toolkit.getMessagePane().showMessage(title, message, icon);
}
});
}
@Override
public void setAction(final IAction action) {
throw new UnsupportedOperationException("setAction() is not possible for a DownloadButton");
}
private class DownloadActionListener implements IActionListener {
@Override
public void actionPerformed() {
download();
}
}
}