Java tutorial
/* * Copyright 2016 Arnell Christoper D. Dalid. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.rockyroadshub.planner.core.gui.calendar; import java.awt.Font; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.sql.SQLException; import java.text.ParseException; import java.text.SimpleDateFormat; import java.util.Date; import javax.swing.BorderFactory; import javax.swing.JButton; import javax.swing.JFormattedTextField; import javax.swing.JLabel; import javax.swing.JPanel; import javax.swing.JSpinner; import javax.swing.JTextArea; import javax.swing.JTextField; import javax.swing.SpinnerModel; import javax.swing.SpinnerNumberModel; import javax.swing.event.ChangeEvent; import javax.swing.event.DocumentEvent; import javax.swing.event.DocumentListener; import javax.swing.text.DefaultStyledDocument; import javax.swing.text.JTextComponent; import javax.swing.text.NumberFormatter; import net.miginfocom.layout.LC; import net.miginfocom.swing.MigLayout; import org.apache.commons.lang.StringUtils; import org.rockyroadshub.planner.core.data.Event; import org.rockyroadshub.planner.core.data.EventMapper; import org.rockyroadshub.planner.core.gui.AbstractPane; import org.rockyroadshub.planner.core.gui.MainFrame; import org.rockyroadshub.planner.core.gui.GUIUtils; import org.rockyroadshub.planner.core.gui.MainPane; import org.rockyroadshub.planner.core.gui.TButton; import org.rockyroadshub.planner.core.utils.Globals; import org.rockyroadshub.planner.core.utils.TextLimiter; import org.rockyroadshub.planner.core.utils.Utilities; import org.rockyroadshub.planner.loader.Icons; /** * * @author Arnell Christoper D. Dalid * @since 0.2.2 */ @SuppressWarnings("serial") public final class FormPane extends AbstractPane { private FormPane() { initialize(); } public static FormPane getInstance() { return Holder.INSTANCE; } private static class Holder { private static final FormPane INSTANCE = new FormPane(); } public static final String NAME = "formpane"; private final JLabel dateLabel = new JLabel(); private final JLabel eventLimit = new JLabel(); private final JLabel eventLabel = new JLabel("Event Title"); private final JTextField eventInput = new JTextField(); private final JLabel descriptionLimit = new JLabel(); private final JLabel descriptionLabel = new JLabel("Description"); private final JTextArea descriptionInput = new JTextArea(); private final JLabel locationLimit = new JLabel(); private final JLabel locationLabel = new JLabel("Location"); private final JTextArea locationInput = new JTextArea(); private final JLabel startLabel = new JLabel("Start (HH:MM)"); private final SpinnerModel startModelH = new SpinnerNumberModel(0, 0, 24, 1); private final SpinnerModel startModelM = new SpinnerNumberModel(0, 0, 60, 1); private final JSpinner startHour = new JSpinner(startModelH); private final JSpinner startMinute = new JSpinner(startModelM); private final JLabel endLabel = new JLabel("End (HH:MM)"); private final SpinnerModel endModelH = new SpinnerNumberModel(0, 0, 24, 1); private final SpinnerModel endModelM = new SpinnerNumberModel(0, 0, 60, 1); private final JSpinner endHour = new JSpinner(endModelH); private final JSpinner endMinute = new JSpinner(endModelM); private final JPanel menuPanel = new JPanel(); private final TButton homeButton = new TButton(); private final TButton backButton = new TButton(); private final TButton saveButton = new TButton(); private final Font font = new Font("MONOSPACED", 0, 12); private String event; private String location; private String description; private String date; private String year; private String month; private String day; private String start; private String end; private final ActionListener action = (ActionEvent ae) -> { JButton button = (JButton) ae.getSource(); onTrigger(button); }; private final DocumentListener document = new DocumentListener() { @Override public void insertUpdate(DocumentEvent e) { update(e); } @Override public void removeUpdate(DocumentEvent e) { update(e); } @Override public void changedUpdate(DocumentEvent e) { update(e); } }; private DefaultStyledDocument documentEvt; private DefaultStyledDocument documentDsc; private DefaultStyledDocument documentLoc; private String formatEvt; private String formatDsc; private String formatLoc; private static final String EVT_INPUT = "Event Title Text Box"; private static final String DSC_INPUT = "Description Text Box"; private static final String LOC_INPUT = "Location Text Box"; private static final String SAVE_DIALOG = "Are you sure to save this event?"; private static final String BORDER = "Add an Event"; private static final String START_VS_END = "Start time cannot be more advanced than End time."; private static final String START_EQ_END = "Start time is the same with End time"; private static final String OVERLAP = "%s overlaps with another event"; private void initialize() { setOpaque(false); setLayout(new MigLayout(new LC().fill())); setName(NAME); initDocuments(); initSpinners(); initMenu(); initButtons(); pack(); GUIUtils.addToPaneList(this); } @Override public void refresh() { clear(); dateLabel.setText(getTitleLabel()); } @Override public void clear() { dateLabel.setText(""); eventInput.setText(""); descriptionInput.setText(""); locationInput.setText(""); startHour.setValue(0); startMinute.setValue(0); endHour.setValue(0); endMinute.setValue(0); } public void setTimeValues(int value) { startModelH.setValue(value); endModelH.setValue(value); } private void initDocuments() { documentEvt = new DefaultStyledDocument(); documentEvt.setDocumentFilter(new TextLimiter(Globals.EVENT_TITLE_SIZE)); documentEvt.addDocumentListener(document); formatEvt = Utilities.stamp(Globals.EVENT_TITLE_SIZE); eventInput.setFont(font); eventInput.setDocument(documentEvt); eventInput.setName(EVT_INPUT); eventLimit.setText(String.format(formatEvt, 0)); documentDsc = new DefaultStyledDocument(); documentDsc.setDocumentFilter(new TextLimiter(Globals.EVENT_DESCR_SIZE)); documentDsc.addDocumentListener(document); formatDsc = Utilities.stamp(Globals.EVENT_DESCR_SIZE); descriptionInput.setFont(font); descriptionInput.setDocument(documentDsc); descriptionInput.setName(DSC_INPUT); descriptionLimit.setText(String.format(formatDsc, 0)); descriptionInput.setLineWrap(true); documentLoc = new DefaultStyledDocument(); documentLoc.setDocumentFilter(new TextLimiter(Globals.EVENT_LOCAT_SIZE)); documentLoc.addDocumentListener(document); formatLoc = Utilities.stamp(Globals.EVENT_LOCAT_SIZE); locationInput.setFont(font); locationInput.setDocument(documentLoc); locationInput.setName(LOC_INPUT); locationLimit.setText(String.format(formatLoc, 0)); locationInput.setLineWrap(true); } private void initSpinners() { setAllowsInvalid(startHour); setAllowsInvalid(startMinute, startHour); setAllowsInvalid(endHour); setAllowsInvalid(endMinute, endHour); } private void initMenu() { menuPanel.setLayout(new MigLayout(Globals.BUTTON_INSETS, Globals.BUTTON_GAPX, Globals.BUTTON_GAPY)); menuPanel.add(dateLabel, "h 32!, gapright 35"); menuPanel.add(homeButton, Globals.BUTTON_DIMENSIONS); menuPanel.add(backButton, Globals.BUTTON_DIMENSIONS); menuPanel.add(saveButton, Globals.BUTTON_DIMENSIONS); menuPanel.setBorder(BorderFactory.createTitledBorder(BORDER)); } private void initButtons() { homeButton.setToolTipText(Globals.HOME); homeButton.setName(CalendarPane.NAME); homeButton.addActionListener(action); homeButton.setIcon(Icons.HOME.icon()); backButton.setToolTipText(Globals.BACK); backButton.setName(DisplayPane.NAME); backButton.addActionListener(action); backButton.setIcon(Icons.BACK.icon()); saveButton.setToolTipText(Globals.SAVE); saveButton.setName(Globals.SAVE); saveButton.addActionListener(action); saveButton.setIcon(Icons.SAVE.icon()); } private void pack() { add(menuPanel, "growx, wrap"); add(eventLabel, "h 32!"); add(eventLimit, "h 32!, align right, wrap"); add(eventInput, "growx, h 32!, span 3, wrap"); add(locationLabel, "h 32!"); add(locationLimit, "h 32!, align right, wrap"); add(locationInput, "growx, h 150!, span 3, wrap"); add(descriptionLabel, "h 32!"); add(descriptionLimit, "h 32!, align right, wrap"); add(descriptionInput, "growx, h 150!, span 3, wrap"); add(startLabel, "h 32!, growx, split"); add(startHour, "h 32!, w 64!"); add(startMinute, "h 32!, w 64!, wrap"); add(endLabel, "h 32!, growx, split"); add(endHour, "h 32!, w 64!"); add(endMinute, "h 32!, w 64!, wrap"); } private void setAllowsInvalid(JSpinner s) { JFormattedTextField txt = ((JSpinner.NumberEditor) s.getEditor()).getTextField(); ((NumberFormatter) txt.getFormatter()).setAllowsInvalid(false); s.addChangeListener((ChangeEvent e) -> { if (s.getValue().equals(24)) { s.setValue(0); } }); } private void setAllowsInvalid(JSpinner s1, JSpinner s2) { JFormattedTextField txt = ((JSpinner.NumberEditor) s1.getEditor()).getTextField(); ((NumberFormatter) txt.getFormatter()).setAllowsInvalid(false); s1.addChangeListener((ChangeEvent e) -> { if (s1.getValue().equals(60)) { s1.setValue(0); int i = (int) s2.getValue() + 1; s2.setValue(i); } }); } private void update(DocumentEvent e) { DefaultStyledDocument doc = (DefaultStyledDocument) e.getDocument(); if (doc.equals(documentEvt)) { update0(eventLimit, formatEvt, doc); } else if (doc.equals(documentLoc)) { update0(locationLimit, formatLoc, doc); } else if (doc.equals(documentDsc)) { update0(descriptionLimit, formatDsc, doc); } } private void update0(JLabel limit, String format, DefaultStyledDocument doc) { limit.setText(String.format(format, doc.getLength())); } private void onTrigger(JButton button) { String name = button.getName(); switch (name) { case Globals.SAVE: onSave(); break; default: DisplayPane.getInstance().refresh(); CalendarPane.getInstance().refresh(); MainPane.getInstance().showPane(name); clear(); break; } } private void onSave() { if (isEmpty(eventInput)) return; if (isEmpty(locationInput)) return; if (isEmpty(descriptionInput)) return; event = eventInput.getText(); description = descriptionInput.getText(); location = locationInput.getText(); date = getDate(); int sH = (int) startModelH.getValue(); int sM = (int) startModelM.getValue(); int eH = (int) endModelH.getValue(); int eM = (int) endModelM.getValue(); start = String.format("%d:%02d:00", sH, sM); end = String.format("%d:%02d:00", eH, eM); if (!compareTime(start, end)) return; if (isOverlapping(event, sH, eH)) return; if (MainFrame.showConfirmDialog(SAVE_DIALOG)) { EventMapper map = EventMapper.getInstance(); Event evt = new Event(); evt.setEvent(event); evt.setDescription(description); evt.setLocation(location); evt.setDate(date); evt.setStart(start); evt.setEnd(end); try { map.insert(evt); } catch (SQLException ex) { MainFrame.showErrorDialog(ex.getMessage()); clear(); return; } DisplayPane.getInstance().getInstance().refresh(); MainPane.getInstance().showPane(DisplayPane.NAME); clear(); } } private static boolean isOverlapping(String evt, int start, int end) { DisplayPane disp = DisplayPane.getInstance(); for (int i = start; i < end + 1; i++) { if (disp.getHourCache().contains(i)) { MainFrame.showErrorDialog(String.format(OVERLAP, evt)); return true; } } return false; } private static boolean compareTime(String start, String end) { try { SimpleDateFormat dateFormat = new SimpleDateFormat("HH:mm:ss"); Date startTime = dateFormat.parse(start); Date endTime = dateFormat.parse(end); int timeComparison = endTime.compareTo(startTime); if (timeComparison == 0 || timeComparison == -1) { MainFrame.showErrorDialog((timeComparison == 0) ? START_EQ_END : START_VS_END); return false; } return true; } catch (ParseException ex) { MainFrame.showErrorDialog(ex.getMessage()); return false; } } private static boolean isEmpty(JTextComponent comp) { boolean b = StringUtils.isBlank(comp.getText()); if (b) { MainFrame.showErrorDialog(comp.getName() + " is empty."); } return b; } }