Java tutorial
/* * org.openmicroscopy.shoola.agents.imviewer.util.player.MoviePlayerControl * *------------------------------------------------------------------------------ * Copyright (C) 2006-2015 University of Dundee. All rights reserved. * * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * This program 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 General Public License for more details. * * You should have received a copy of the GNU General Public License along * with this program; if not, write to the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. * *------------------------------------------------------------------------------ */ package org.openmicroscopy.shoola.agents.imviewer.util.player; //Java imports import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.FocusEvent; import java.awt.event.FocusListener; import java.awt.event.KeyAdapter; import java.awt.event.KeyEvent; import java.beans.PropertyChangeEvent; import java.beans.PropertyChangeListener; import javax.swing.AbstractButton; import javax.swing.JComboBox; import javax.swing.JTextField; import javax.swing.event.ChangeEvent; import javax.swing.event.ChangeListener; //Third-party libraries import org.apache.commons.lang.StringUtils; //Application-internal dependencies import org.openmicroscopy.shoola.util.ui.NumericalTextField; import org.openmicroscopy.shoola.util.ui.slider.TwoKnobsSlider; /** * The movie player controller. * * @author Jean-Marie Burel * <a href="mailto:j.burel@dundee.ac.uk">j.burel@dundee.ac.uk</a> * @author Andrea Falconi * <a href="mailto:a.falconi@dundee.ac.uk">a.falconi@dundee.ac.uk</a> * @author Donald MacDonald * <a href="mailto:donald@lifesci.dundee.ac.uk">donald@lifesci.dundee.ac.uk</a> * @version 3.0 * <small> * (<b>Internal version:</b> $Revision: $ $Date: $) * </small> * @since OME2.2 */ class MoviePlayerControl implements ActionListener, ChangeListener, FocusListener, PropertyChangeListener { /** Identifies the play movie action. */ private static final int PLAY_CMD = 4; /** Identifies the play pause action. */ private static final int PAUSE_CMD = 5; /** Identifies the stop movie action. */ private static final int STOP_CMD = 6; /** Identifies the change of movie type. */ private static final int MOVIE_TYPE_CMD = 7; /** * Action command ID to sync JSpinner and the text field editor. */ private static final int EDITOR_CMD = 8; /** Indicates that the movie is played across z-sections. */ private static final int ACROSS_Z_CMD = 9; /** Indicates that the movie is played across timepoints. */ private static final int ACROSS_T_CMD = 10; /** Indicates that the movie is played across z-sections and timepoints. */ private static final int ACROSS_ZT_CMD = 11; /** Reference to the View. */ private MoviePlayer model; /** Reference to the View. */ private MoviePlayerUI view; /** Adds an {@link ActionListener} to an {@link AbstractButton}. * * @param button The component to attach the listener to. * @param id The action command ID. */ private void attachButtonListener(AbstractButton button, int id) { button.addActionListener(this); button.setActionCommand("" + id); } /** * Adds listeners to a {@link JTextField}. * * @param field The component to attach the listeners to. */ private void attachFieldListeners(JTextField field) { field.addFocusListener(this); field.addPropertyChangeListener(this); } /** Adds listeners to the UI components. */ private void initListeners() { JTextField editor = view.editor; editor.addKeyListener(new KeyAdapter() { public void keyPressed(KeyEvent e) { if (e.getKeyCode() == KeyEvent.VK_ENTER) editorActionHandler(); } }); //JButton attachButtonListener(view.play, PLAY_CMD); attachButtonListener(view.pause, PAUSE_CMD); attachButtonListener(view.stop, STOP_CMD); //JComboBox JComboBox box = view.movieTypes; box.setActionCommand("" + MOVIE_TYPE_CMD); box.addActionListener(this); //JSpinner view.fps.addChangeListener(this); //MoviePane attachFieldListeners(view.startT); attachFieldListeners(view.endT); attachFieldListeners(view.startZ); attachFieldListeners(view.endZ); attachButtonListener(view.acrossZ, ACROSS_Z_CMD); attachButtonListener(view.acrossT, ACROSS_T_CMD); //attachButtonListener(view.acrossZT, ACROSS_ZT_CMD); view.tSlider.addPropertyChangeListener(this); view.zSlider.addPropertyChangeListener(this); } /** * Checks if the delay entered for the timer is valid. * If so, sets the value and updates the UI. */ private void editorActionHandler() { int val = ((Integer) view.fps.getValue()).intValue(); Number n = view.editor.getValueAsNumber(); if (n != null) { val = n.intValue(); model.setTimerDelay(val); view.setTimerDelay(val); } else { view.editor.setText("" + val); model.setTimerDelay(val); view.setTimerDelay(val); } } /** * Creates a new instance. * * @param model Reference to the Model. Mustn't be <code>null</code>. * @param view Reference to the View. Mustn't be <code>null</code>. */ MoviePlayerControl(MoviePlayer model, MoviePlayerUI view) { if (model == null) throw new IllegalArgumentException("No model."); if (view == null) throw new IllegalArgumentException("No view."); this.view = view; this.model = model; initListeners(); } /** * Sets the values required to play the movie. Each time a value is set * and the movie is playing, the movie is first stopped. * @see ActionListener#actionPerformed(ActionEvent) */ public void actionPerformed(ActionEvent ae) { try { int index = Integer.parseInt(ae.getActionCommand()); switch (index) { case ACROSS_T_CMD: if (view.acrossZ.isSelected()) { if (view.acrossT.isSelected()) model.setMovieIndex(MoviePlayerDialog.ACROSS_ZT); else model.setMovieIndex(MoviePlayerDialog.ACROSS_Z); } else { if (view.acrossT.isSelected()) model.setMovieIndex(MoviePlayerDialog.ACROSS_T); else view.acrossT.setSelected(true); } break; case ACROSS_Z_CMD: if (view.acrossT.isSelected()) { if (view.acrossZ.isSelected()) model.setMovieIndex(MoviePlayerDialog.ACROSS_ZT); else model.setMovieIndex(MoviePlayerDialog.ACROSS_T); } else { if (view.acrossZ.isSelected()) model.setMovieIndex(MoviePlayerDialog.ACROSS_Z); else view.acrossZ.setSelected(true); } break; case ACROSS_ZT_CMD: model.setMovieIndex(MoviePlayerDialog.ACROSS_ZT); break; case PLAY_CMD: model.setPlayerState(Player.START); break; case PAUSE_CMD: model.setPlayerState(Player.PAUSE); break; case STOP_CMD: model.setPlayerState(Player.STOP); break; case EDITOR_CMD: editorActionHandler(); break; case MOVIE_TYPE_CMD: int i = ((JComboBox) ae.getSource()).getSelectedIndex(); model.setMovieType(view.getMovieType(i)); break; } } catch (NumberFormatException nfe) { throw new Error("Invalid Action ID " + ae.getActionCommand(), nfe); } } /** * Sets the timer delay. * @see ChangeListener#stateChanged(ChangeEvent) */ public void stateChanged(ChangeEvent e) { int v = ((Integer) view.fps.getValue()).intValue(); model.setTimerDelay(v); view.setTimerDelay(v); } /** * Handles the lost of focus on the various text fields. * If focus is lost while editing, then we don't consider the text * currently displayed in the text field and we reset it to the current * value. * @see FocusListener#focusLost(FocusEvent) */ public void focusLost(FocusEvent e) { String edit = view.editor.getText(), ed = "" + model.getTimerDelay(); if (edit == null || !edit.equals(ed)) view.editor.setText(ed); String startT = "" + (model.getStartT() + 1); String endT = "" + (model.getEndT() + 1); String startVal = view.startT.getText(), endVal = view.endT.getText(); if (StringUtils.isBlank(startVal) || !startVal.equals(startT)) view.startT.setText(startT); if (StringUtils.isBlank(endVal) || !endVal.equals(endT)) view.endT.setText(endT); String startZ = "" + (model.getStartZ() + 1); String endZ = "" + (model.getEndZ() + 1); startVal = view.startZ.getText(); endVal = view.endZ.getText(); if (StringUtils.isBlank(startVal) || !startVal.equals(startZ)) view.startZ.setText(startZ); if (StringUtils.isBlank(endVal) || !endVal.equals(endZ)) view.endZ.setText(endZ); } /** * Sets the z-section interval and timepoint interval. * @see PropertyChangeListener#propertyChange(PropertyChangeEvent) */ public void propertyChange(PropertyChangeEvent evt) { String name = evt.getPropertyName(); Object source = evt.getSource(); int s = -1; int e = -1; if (TwoKnobsSlider.LEFT_MOVED_PROPERTY.equals(name)) { if (source.equals(view.zSlider)) { s = view.zSlider.getStartValueAsInt(); model.setStartZ(s); view.setStartZ(s); } else if (source.equals(view.tSlider)) { s = view.tSlider.getStartValueAsInt(); model.setStartT(s); view.setStartT(s); } } else if (TwoKnobsSlider.RIGHT_MOVED_PROPERTY.equals(name)) { if (source.equals(view.zSlider)) { e = view.zSlider.getEndValueAsInt(); model.setEndZ(e); view.setEndZ(e); } else if (source.equals(view.tSlider)) { e = view.tSlider.getEndValueAsInt(); model.setEndT(e); view.setEndT(e); } } else if (NumericalTextField.TEXT_UPDATED_PROPERTY.equals(name)) { Number n; if (source.equals(view.startT)) { n = view.startT.getValueAsNumber(); if (n == null) return; s = n.intValue() - 1; if (s >= model.getEndT() || s < 0) return; model.setStartT(s); view.tSlider.setStartValue(s); } else if (source.equals(view.startZ)) { n = view.startZ.getValueAsNumber(); if (n == null) return; s = n.intValue() - 1; if (s >= model.getEndZ() || s < 0) return; model.setStartZ(s); view.zSlider.setStartValue(s); } else if (source.equals(view.endZ)) { n = view.endZ.getValueAsNumber(); if (n == null) return; s = n.intValue() - 1; if (s <= model.getStartZ() || s > model.getMaxZ()) return; model.setEndZ(s); view.zSlider.setEndValue(s); } else if (source.equals(view.endT)) { n = view.endT.getValueAsNumber(); if (n == null) return; s = n.intValue() - 1; if (s <= model.getStartT() || s > model.getMaxT()) return; model.setEndT(s); view.tSlider.setEndValue(s); } } } /** * Required by {@link FocusListener} I/F but not actually needed in * our case, no operation implementation. * @see FocusListener#focusGained(FocusEvent) */ public void focusGained(FocusEvent e) { } }