Java tutorial
/* * Copyright (c) 2016 Marco Maccaferri and others. * All rights reserved. This program and the accompanying materials * are made available under the terms of the Eclipse Public License v1.0 * which accompanies this distribution, and is available at * http://www.eclipse.org/legal/epl-v10.html * * Contributors: * Marco Maccaferri - initial API and implementation */ package com.maccasoft.composer; import java.beans.PropertyChangeEvent; import java.beans.PropertyChangeListener; import java.io.BufferedReader; import java.io.File; import java.io.FileOutputStream; import java.io.FileReader; import java.io.IOException; import java.io.PrintStream; import java.lang.reflect.InvocationTargetException; import java.util.ArrayList; import java.util.List; import java.util.Observable; import java.util.Observer; import org.eclipse.core.databinding.observable.Realm; import org.eclipse.core.runtime.IProgressMonitor; import org.eclipse.core.runtime.SubProgressMonitor; import org.eclipse.jface.databinding.swt.DisplayRealm; import org.eclipse.jface.dialogs.IInputValidator; import org.eclipse.jface.dialogs.InputDialog; import org.eclipse.jface.dialogs.MessageDialog; import org.eclipse.jface.dialogs.ProgressIndicator; import org.eclipse.jface.dialogs.ProgressMonitorDialog; import org.eclipse.jface.operation.IRunnableWithProgress; import org.eclipse.jface.viewers.ISelectionChangedListener; import org.eclipse.jface.viewers.SelectionChangedEvent; import org.eclipse.jface.viewers.StructuredSelection; import org.eclipse.swt.SWT; import org.eclipse.swt.custom.BusyIndicator; import org.eclipse.swt.events.MenuEvent; import org.eclipse.swt.events.MenuListener; import org.eclipse.swt.graphics.Image; import org.eclipse.swt.graphics.Rectangle; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Event; import org.eclipse.swt.widgets.FileDialog; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.Listener; import org.eclipse.swt.widgets.Menu; import org.eclipse.swt.widgets.MenuItem; import org.eclipse.swt.widgets.MessageBox; import org.eclipse.swt.widgets.Shell; import com.maccasoft.composer.internal.ImageRegistry; import com.maccasoft.composer.model.Command; import com.maccasoft.composer.model.Instrument; import com.maccasoft.composer.model.Music; import com.maccasoft.composer.model.Project; import com.maccasoft.composer.model.ProjectBuilder; import com.maccasoft.composer.model.ProjectCompiler; import com.maccasoft.composer.model.ProjectException; import com.maccasoft.composer.model.Song; import com.maccasoft.composer.model.SongBuilder; import jssc.SerialPortException; public class Main { public static final String APP_TITLE = "Retronitus Composer"; public static final String APP_VERSION = "0.2.0"; Shell shell; MusicEditor editor; ProgressIndicator progressBar; Label portLabel; File projectFile; Project project; SerialPortList serialPortList; final PropertyChangeListener propertyChangeListener = new PropertyChangeListener() { @Override public void propertyChange(PropertyChangeEvent evt) { updateShellTitle(); } }; public Main(Shell shell) { this.shell = shell; shell.setLayout(new GridLayout(1, false)); project = new ProjectBuilder() // .add(new SongBuilder("New song", 120).row(63)) // .build(); project.addPropertyChangeListener(propertyChangeListener); Menu menu = new Menu(shell, SWT.BAR); createFileMenu(menu); createToolsMenu(menu); createHelpMenu(menu); shell.setMenuBar(menu); editor = new MusicEditor(shell); editor.setProject(project); editor.addSongSelectionChangedListener(new ISelectionChangedListener() { @Override public void selectionChanged(SelectionChangedEvent event) { updateShellTitle(); } }); createStatusBar(shell); updateShellTitle(); shell.addListener(SWT.Close, new Listener() { @Override public void handleEvent(Event event) { if (project.isDirty()) { event.doit = handleUnsavedContent("Editor contains unsaved changes. Save before exit?"); } } }); serialPortList = new SerialPortList(); serialPortList.addObserver(new Observer() { @Override public void update(Observable o, Object arg) { portLabel.setText((String) arg); editor.setSerialPort((String) arg); } }); portLabel.setText(serialPortList.getSelection()); editor.setSerialPort(serialPortList.getSelection()); } void createFileMenu(Menu parent) { Menu menu = new Menu(parent.getParent(), SWT.DROP_DOWN); MenuItem item = new MenuItem(parent, SWT.CASCADE); item.setText("File"); item.setMenu(menu); createNewMenu(menu); new MenuItem(menu, SWT.SEPARATOR); item = new MenuItem(menu, SWT.PUSH); item.setText("Open..."); item.addListener(SWT.Selection, new Listener() { @Override public void handleEvent(Event e) { try { if (project.isDirty()) { if (!handleUnsavedContent("Editor contains unsaved changes. Save now?")) { return; } } handleFileOpen(); updateShellTitle(); } catch (Exception e1) { e1.printStackTrace(); } } }); new MenuItem(menu, SWT.SEPARATOR); item = new MenuItem(menu, SWT.PUSH); item.setText("Save\tCTRL+S"); item.setAccelerator(SWT.MOD1 + 'S'); item.addListener(SWT.Selection, new Listener() { @Override public void handleEvent(Event e) { try { handleFileSave(); updateShellTitle(); } catch (Exception e1) { e1.printStackTrace(); } } }); item = new MenuItem(menu, SWT.PUSH); item.setText("Save As..."); item.addListener(SWT.Selection, new Listener() { @Override public void handleEvent(Event e) { try { handleFileSaveAs(); updateShellTitle(); } catch (Exception e1) { e1.printStackTrace(); } } }); new MenuItem(menu, SWT.SEPARATOR); createImportMenu(menu); createExportMenu(menu); new MenuItem(menu, SWT.SEPARATOR); item = new MenuItem(menu, SWT.PUSH); item.setText("Exit"); item.addListener(SWT.Selection, new Listener() { @Override public void handleEvent(Event e) { shell.close(); } }); } void createNewMenu(Menu parent) { Menu menu = new Menu(parent.getParent(), SWT.DROP_DOWN); MenuItem item = new MenuItem(parent, SWT.CASCADE); item.setText("New"); item.setMenu(menu); item = new MenuItem(menu, SWT.PUSH); item.setText("Project"); item.addListener(SWT.Selection, new Listener() { @Override public void handleEvent(Event e) { if (project.isDirty()) { if (!handleUnsavedContent("Editor contains unsaved changes. Save now?")) { return; } } project.removePropertyChangeListener(propertyChangeListener); projectFile = null; project = new ProjectBuilder() // .add(new SongBuilder("New song", 120).row(63)) // .build(); project.addPropertyChangeListener(propertyChangeListener); editor.setProject(project); updateShellTitle(); } }); new MenuItem(menu, SWT.SEPARATOR); item = new MenuItem(menu, SWT.PUSH); item.setText("Song..."); item.addListener(SWT.Selection, new Listener() { @Override public void handleEvent(Event e) { IInputValidator validator = new IInputValidator() { @Override public String isValid(String newText) { if (newText.length() == 0) { return ""; } for (Song song : project.getSongs()) { if (newText.equalsIgnoreCase(song.getName())) { return "A song with the same title already exists"; } } return null; } }; InputDialog dlg = new InputDialog(shell, "New Song", "Title:", "", validator); if (dlg.open() == InputDialog.OK) { Song song = new Song(dlg.getValue(), 120); project.add(song); editor.songsCombo.setSelection(new StructuredSelection(song)); } } }); } void createImportMenu(Menu parent) { Menu menu = new Menu(parent.getParent(), SWT.DROP_DOWN); MenuItem item = new MenuItem(parent, SWT.CASCADE); item.setText("Import"); item.setMenu(menu); item = new MenuItem(menu, SWT.PUSH); item.setText("Instruments"); item.addListener(SWT.Selection, new Listener() { @Override public void handleEvent(Event e) { handleImportInstrument(); } }); } void createExportMenu(Menu parent) { Menu menu = new Menu(parent.getParent(), SWT.DROP_DOWN); MenuItem item = new MenuItem(parent, SWT.CASCADE); item.setText("Export"); item.setMenu(menu); item = new MenuItem(menu, SWT.PUSH); item.setText("Instruments"); item.addListener(SWT.Selection, new Listener() { @Override public void handleEvent(Event event) { try { handleExportInstruments(); } catch (Exception e) { e.printStackTrace(); } } }); item = new MenuItem(menu, SWT.PUSH); item.setText("Song"); item.addListener(SWT.Selection, new Listener() { @Override public void handleEvent(Event e) { try { ProjectCompiler compiler = new ProjectCompiler(project); Music music = compiler.build(editor.getCurrentSong()); TextExportDialog dlg = new TextExportDialog(shell); dlg.setSongData(music.toArray()); dlg.open(); } catch (ProjectException ex) { MessageDialog.openError(shell, APP_TITLE, "An error occurred while compiling song:\r\n\r\n" + ex.getMessage()); editor.focusOnErrorCell(ex); } } }); } void createToolsMenu(Menu parent) { Menu menu = new Menu(parent.getParent(), SWT.DROP_DOWN); MenuItem item = new MenuItem(parent, SWT.CASCADE); item.setText("&Tools"); item.setMenu(menu); item = new MenuItem(menu, SWT.PUSH); item.setText("Upload player"); item.addListener(SWT.Selection, new Listener() { @Override public void handleEvent(Event e) { handlePlayerUpload(); } }); new MenuItem(menu, SWT.SEPARATOR); createPortMenu(menu); } void createPortMenu(Menu parent) { final Menu menu = new Menu(parent.getParent(), SWT.DROP_DOWN); menu.addMenuListener(new MenuListener() { @Override public void menuShown(MenuEvent e) { serialPortList.fillMenu(menu); } @Override public void menuHidden(MenuEvent e) { } }); MenuItem item = new MenuItem(parent, SWT.CASCADE); item.setText("&Port"); item.setMenu(menu); } void createHelpMenu(Menu parent) { Menu menu = new Menu(parent.getParent(), SWT.DROP_DOWN); MenuItem item = new MenuItem(parent, SWT.CASCADE); item.setText("&Help"); item.setMenu(menu); item = new MenuItem(menu, SWT.PUSH); item.setText("About " + APP_TITLE); item.addListener(SWT.Selection, new Listener() { @Override public void handleEvent(Event e) { AboutDialog dlg = new AboutDialog(shell); dlg.open(); } }); } void createStatusBar(Composite parent) { Composite container = new Composite(parent, SWT.NONE); GridData layoutData = new GridData(SWT.FILL, SWT.CENTER, true, false); layoutData.heightHint = 27; container.setLayoutData(layoutData); Label messageLabel = new Label(container, SWT.NONE); layoutData = new GridData(SWT.FILL, SWT.CENTER, true, true); messageLabel.setLayoutData(layoutData); Label label = new Label(container, SWT.SEPARATOR); layoutData = new GridData(SWT.FILL, SWT.CENTER, false, true); label.setLayoutData(layoutData); portLabel = new Label(container, SWT.NONE); layoutData = new GridData(SWT.FILL, SWT.CENTER, false, true); layoutData.widthHint = 128; portLabel.setLayoutData(layoutData); label = new Label(container, SWT.SEPARATOR); layoutData = new GridData(SWT.FILL, SWT.CENTER, false, true); label.setLayoutData(layoutData); progressBar = new ProgressIndicator(container, SWT.HORIZONTAL); layoutData = new GridData(SWT.FILL, SWT.CENTER, false, true); layoutData.widthHint = 128; progressBar.setLayoutData(layoutData); container.setLayout(new GridLayout(container.getChildren().length, false)); } private void handleFileOpen() { FileDialog dlg = new FileDialog(shell, SWT.OPEN); String[] filterNames = new String[] { "Music Projects (*.xml)" }; String[] filterExtensions = new String[] { "*.xml" }; dlg.setFilterNames(filterNames); dlg.setFilterExtensions(filterExtensions); dlg.setText("Open File"); final String fileName = dlg.open(); if (fileName != null) { BusyIndicator.showWhile(Display.getDefault(), new Runnable() { @Override public void run() { try { File fileToOpen = new File(fileName); BufferedReader is = new BufferedReader(new FileReader(fileToOpen)); try { Project projectToOpen = new Project(is); editor.setProject(projectToOpen); project.removePropertyChangeListener(propertyChangeListener); project = projectToOpen; project.addPropertyChangeListener(propertyChangeListener); projectFile = fileToOpen; } finally { is.close(); } } catch (Exception e) { e.printStackTrace(); } } }); } } private void handleFileSave() throws Exception { if (projectFile == null) { File newFile = getFileToSaveTo(null); if (newFile == null) { return; } projectFile = newFile; } PrintStream os = new PrintStream(new FileOutputStream(projectFile)); try { project.writeTo(os); } finally { os.close(); } } private void handleFileSaveAs() throws Exception { File newFile = getFileToSaveTo(projectFile); if (newFile == null) { return; } projectFile = newFile; PrintStream os = new PrintStream(new FileOutputStream(projectFile)); try { project.writeTo(os); } finally { os.close(); } } private File getFileToSaveTo(File currentFile) { FileDialog dlg = new FileDialog(shell, SWT.SAVE); if (currentFile != null) { dlg.setFilterPath(currentFile.getParent()); } dlg.setFileName(currentFile != null ? currentFile.getName() : "*.xml"); dlg.setText("Save File"); String fileName = dlg.open(); if (fileName == null) { return null; } return new File(fileName); } void updateShellTitle() { String title = projectFile != null ? projectFile.getName() : "Untitled"; shell.setText(String.format("%s%s [%s] - %s", project.isDirty() ? "*" : "", title, editor.getCurrentSong().getName(), APP_TITLE)); } void handlePlayerUpload() { File file = new File("Player/Player.binary"); if (!file.exists()) { file = new File("lib/Player.binary"); } if (!file.exists()) { file = new File("Player.binary"); } if (!file.exists()) { MessageDialog.openError(shell, APP_TITLE, "Player binary file not found!"); return; } final File binaryFile = file; ProgressMonitorDialog dlg = new ProgressMonitorDialog(shell); try { dlg.setOpenOnRun(true); dlg.run(true, false, new IRunnableWithProgress() { @Override public void run(final IProgressMonitor monitor) throws InvocationTargetException, InterruptedException { PropellerLoader loader = new PropellerLoader(editor.getSerialPort(), true) { SubProgressMonitor subProgressMonitor = new SubProgressMonitor(monitor, 1); @Override protected void bufferUpload(int type, byte[] binaryImage) throws SerialPortException, IOException { StringBuilder sb = new StringBuilder("Loading binary image to "); switch (type) { case DOWNLOAD_EEPROM: case DOWNLOAD_RUN_EEPROM: sb.append("EEPROM via "); // fall through case DOWNLOAD_RUN_BINARY: sb.append("hub memory"); break; } monitor.beginTask(sb.toString(), IProgressMonitor.UNKNOWN); super.bufferUpload(type, binaryImage); } @Override protected void notifyProgress(int sent, int total) { subProgressMonitor .subTask(String.format("%d bytes remaining \r", total - sent)); } @Override protected void verifyRam() throws SerialPortException, IOException { subProgressMonitor.subTask("Verifying RAM ... "); super.verifyRam(); } @Override protected void eepromWrite() throws SerialPortException, IOException { subProgressMonitor.subTask("Programming EEPROM ... "); super.eepromWrite(); } @Override protected void eepromVerify() throws SerialPortException, IOException { subProgressMonitor.subTask("Verifying EEPROM ... "); super.eepromVerify(); } }; try { loader.upload(binaryFile, PropellerLoader.DOWNLOAD_RUN_EEPROM); } catch (Exception e) { e.printStackTrace(); } } }); } catch (Exception e1) { e1.printStackTrace(); } } private void handleImportInstrument() { FileDialog dlg = new FileDialog(shell, SWT.OPEN); String[] filterNames = new String[] { "Instrument Files (*.xml)" }; String[] filterExtensions = new String[] { "*.xml" }; dlg.setFilterNames(filterNames); dlg.setFilterExtensions(filterExtensions); dlg.setText("Open File"); final String fileName = dlg.open(); if (fileName != null) { final List<Instrument> list = new ArrayList<Instrument>(); BusyIndicator.showWhile(Display.getDefault(), new Runnable() { @Override public void run() { try { String line; File fileToOpen = new File(fileName); String defaultName = fileToOpen.getName(); if (defaultName.toLowerCase().endsWith(".xml")) { defaultName = defaultName.substring(0, defaultName.length() - 4); } BufferedReader is = new BufferedReader(new FileReader(fileToOpen)); try { Instrument instrument = new Instrument(defaultName); while ((line = is.readLine()) != null) { if (line.contains("<instrument")) { if (instrument.getCommands().size() != 0) { project.add(instrument); } int s = line.indexOf("name=\"") + 6; int e = line.indexOf('"', s); instrument = new Instrument(line.substring(s, e)); } else if (line.contains("</instrument")) { if (instrument.getCommands().size() != 0) { list.add(instrument); } instrument = new Instrument(defaultName); } else if (line.contains("<jump ") || line.contains("<set-") || line.contains("<modify-")) { instrument.add(Command.fromXml(line)); } } if (instrument.getCommands().size() != 0) { list.add(instrument); } } finally { is.close(); } } catch (Exception e) { e.printStackTrace(); } } }); ListSelectionDialog sdlg = new ListSelectionDialog(shell, "Import instruments", "Select the instruments to import:", list); if (sdlg.open() == ListSelectionDialog.OK) { project.getObservableInstruments().addAll(sdlg.getSelectedElements()); } } } private void handleExportInstruments() throws Exception { List<Instrument> list = new ArrayList<Instrument>(project.getInstruments()); ListSelectionDialog sdlg = new ListSelectionDialog(shell, "Export instruments", "Select the instruments to export:", list); if (sdlg.open() == ListSelectionDialog.OK) { FileDialog dlg = new FileDialog(shell, SWT.SAVE); String[] filterNames = new String[] { "Instrument Files (*.xml)" }; String[] filterExtensions = new String[] { "*.xml" }; dlg.setFilterNames(filterNames); dlg.setFilterExtensions(filterExtensions); dlg.setText("Save File"); final String fileName = dlg.open(); if (fileName != null) { PrintStream os = new PrintStream(new FileOutputStream(fileName)); try { for (Object o : sdlg.getSelectedElements()) { Instrument ins = (Instrument) o; os.println(String.format("<instrument name=\"%s\">", ins.getName())); for (Command cmd : ins.getCommands()) { os.print(" " + cmd.toXmlString()); os.println(); } os.print("</instrument>\n"); } } finally { os.close(); } } } } private boolean handleUnsavedContent(String message) { int style = SWT.APPLICATION_MODAL | SWT.ICON_QUESTION | SWT.YES | SWT.NO | SWT.CANCEL; MessageBox messageBox = new MessageBox(shell, style); messageBox.setText(APP_TITLE); messageBox.setMessage(message); switch (messageBox.open()) { case SWT.CANCEL: return false; case SWT.YES: try { handleFileSave(); return !project.isDirty(); } catch (Exception e1) { e1.printStackTrace(); } return false; } return true; } static { System.setProperty("SWT_GTK3", "0"); } public static void main(String[] args) { final Display display = new Display(); Realm.runWithDefault(DisplayRealm.getRealm(display), new Runnable() { @Override public void run() { try { final Shell shell = new Shell(display); shell.setText(APP_TITLE); Image[] images = new Image[] { ImageRegistry.getImageFromResources("app64.png"), ImageRegistry.getImageFromResources("app48.png"), ImageRegistry.getImageFromResources("app32.png"), ImageRegistry.getImageFromResources("app16.png"), }; shell.setImages(images); Rectangle screen = display.getClientArea(); Rectangle rect = new Rectangle(0, 0, (int) (screen.width * 0.85), (int) (screen.height * 0.85)); rect.x = (screen.width - rect.width) / 2; rect.y = (screen.height - rect.height) / 2; if (rect.y < 0) { rect.height += rect.y * 2; rect.y = 0; } shell.setLocation(rect.x, rect.y); shell.setSize(rect.width, rect.height); new Main(shell); shell.open(); while (display.getShells().length != 0) { if (!display.readAndDispatch()) { display.sleep(); } } } catch (Exception e) { e.printStackTrace(); return; } } }); display.dispose(); } }