Java tutorial
/* AttendanceManager Copyright (C) 2010 Victor Carceler This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 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 Affero General Public License for more details. You should have received a copy of the GNU Affero General Public License along with this program. If not, see <http://www.gnu.org/licenses/> */ package org.iespuigcastellar.attendancemanager.screenlayouts; import java.util.Collection; import java.util.Date; import java.util.Iterator; import org.iespuigcastellar.attendancemanager.AttendancemanagerApplication; import org.iespuigcastellar.attendancemanager.core.Classblock; import org.iespuigcastellar.attendancemanager.core.HasGetName; import org.iespuigcastellar.attendancemanager.core.Logger; import org.iespuigcastellar.attendancemanager.core.Miss; import org.iespuigcastellar.attendancemanager.core.Student; import com.vaadin.data.Item; import com.vaadin.data.Property; import com.vaadin.data.Property.ValueChangeEvent; import com.vaadin.data.util.BeanItem; import com.vaadin.terminal.ThemeResource; import com.vaadin.ui.Alignment; import com.vaadin.ui.Button; import com.vaadin.ui.CheckBox; import com.vaadin.ui.ComboBox; import com.vaadin.ui.Form; import com.vaadin.ui.GridLayout; import com.vaadin.ui.HorizontalLayout; import com.vaadin.ui.PopupDateField; import com.vaadin.ui.Table; import com.vaadin.ui.TextField; import com.vaadin.ui.VerticalLayout; import com.vaadin.ui.Window; import com.vaadin.ui.AbstractSelect.Filtering; import com.vaadin.ui.Button.ClickEvent; import com.vaadin.ui.Window.Notification; @SuppressWarnings("serial") public class TeacherMainLayout extends VerticalLayout implements Property.ValueChangeListener { private AttendancemanagerApplication app; private PasswordChangeWindow passwordChangeWindow; private PopupDateField datePopupDateField; private ComboBox classblockComboBox; private Table table = new Table(); public void attach() { app = (AttendancemanagerApplication) getApplication(); initLayout(); Collection<Classblock> classblocks = app.storage.classblocksOfTeacherOnDate(app.user.getID(), new Date()); setComboBoxItems(classblockComboBox, classblocks); } private void initLayout() { passwordChangeWindow = new PasswordChangeWindow(); passwordChangeWindow.setCaption(app.locale.getString("TEACHERMAINLAYOUT_CHANGEMYPASSWORD_BUTTON")); datePopupDateField = new PopupDateField(""); datePopupDateField.setDescription(app.locale.getString("TEACHERMAINLAYOUT_DATEFIELD_DESCRIPTION")); datePopupDateField.setValue(new java.util.Date()); datePopupDateField.setResolution(PopupDateField.RESOLUTION_DAY); datePopupDateField.setImmediate(true); datePopupDateField.addListener(ValueChangeEvent.class, this, "changedDate"); classblockComboBox = new ComboBox(); classblockComboBox.setInputPrompt(app.locale.getString("TEACHERMAINLAYOUT_CLASSBLOCK_INPUTPROMPT")); classblockComboBox.setDescription(app.locale.getString("TEACHERMAINLAYOUT_CLASSBLOCK_DESCRIPTION")); classblockComboBox.setFilteringMode(Filtering.FILTERINGMODE_CONTAINS); classblockComboBox.setImmediate(true); classblockComboBox.addContainerProperty("name", String.class, ""); classblockComboBox.setItemCaptionPropertyId("name"); classblockComboBox.addListener(ValueChangeEvent.class, this, "changedClassblock"); Button logoutButton = new Button(app.locale.getString("TEACHERMAINLAYOUT_LOGOUTBUTTON_CAPTION")); logoutButton.addListener(new Button.ClickListener() { @Override public void buttonClick(ClickEvent event) { Logger.log("User " + app.user.getLogin() + " closes session"); app.storage.close(); getApplication().close(); } }); Button changePasswordButton = new Button(app.locale.getString("TEACHERMAINLAYOUT_CHANGEMYPASSWORD_BUTTON")); changePasswordButton.setIcon(new ThemeResource("../runo/icons/16/user.png")); changePasswordButton.setStyleName(Button.STYLE_LINK); changePasswordButton.addListener(new Button.ClickListener() { public void buttonClick(ClickEvent event) { // Open window if not open already if (passwordChangeWindow.getParent() != null) { // Window already open } else { // open window getWindow().addWindow(passwordChangeWindow); } } }); GridLayout optionsGridLayout = new GridLayout(2, 1); HorizontalLayout haLayout = new HorizontalLayout(); haLayout.setSpacing(true); haLayout.addComponent(changePasswordButton); haLayout.setComponentAlignment(changePasswordButton, Alignment.MIDDLE_LEFT); haLayout.addComponent(datePopupDateField); haLayout.addComponent(classblockComboBox); optionsGridLayout.addComponent(haLayout); optionsGridLayout.addComponent(logoutButton); optionsGridLayout.setComponentAlignment(logoutButton, Alignment.TOP_RIGHT); optionsGridLayout.setWidth("100%"); addComponent(optionsGridLayout); table.setSizeFull(); table.setImmediate(true); table.setColumnReorderingAllowed(true); table.setColumnCollapsingAllowed(true); table.addContainerProperty("Name", String.class, null); table.addContainerProperty("Surname 1", String.class, null); table.addContainerProperty("Surname 2", String.class, null); table.addContainerProperty("Miss", CheckBox.class, null); table.addContainerProperty("Excused", CheckBox.class, null); table.addContainerProperty("Delay", CheckBox.class, null); table.addContainerProperty("Expulsion", CheckBox.class, null); table.setColumnExpandRatio("Name", 1); table.setColumnExpandRatio("Surname 1", 1); table.setColumnExpandRatio("Surname 2", 1); table.setColumnHeaders(new String[] { app.locale.getString("TEACHERMAINLAYOUT_TABLECOLUMN_NAME"), app.locale.getString("TEACHERMAINLAYOUT_TABLECOLUMN_SURNAME1"), app.locale.getString("TEACHERMAINLAYOUT_TABLECOLUMN_SURNAME2"), app.locale.getString("TEACHERMAINLAYOUT_TABLECOLUMN_MISS"), app.locale.getString("TEACHERMAINLAYOUT_TABLECOLUMN_EXCUSED"), app.locale.getString("TEACHERMAINLAYOUT_TABLECOLUMN_DELAY"), app.locale.getString("TEACHERMAINLAYOUT_TABLECOLUMN_EXPULSION") }); addComponent(table); setExpandRatio(table, 1); setSizeFull(); } /** Clears ComboBox's Items and sets the ones in collection. */ private void setComboBoxItems(ComboBox combo, Collection<?> collection) { combo.removeAllItems(); for (Iterator<?> it = collection.iterator(); it.hasNext();) { HasGetName element = (HasGetName) it.next(); Item item = combo.addItem(element); item.getItemProperty("name").setValue(element.getName()); } // If there is only one Item select it if (collection.size() == 1) { combo.select(collection.iterator().next()); } } public void valueChange(ValueChangeEvent event) { getWindow().showNotification("Subject: " + event.getProperty()); } public void changedClassblock(ValueChangeEvent event) { Classblock classblock = (Classblock) event.getProperty().getValue(); if (classblock != null) { loadTable(classblock.getIDGroup()); } else { table.removeAllItems(); getWindow().showNotification( app.locale.getString("TEACHERMAINLAYOUT_SELECTCLASSBLOCKNOTIFICATION_CAPTION"), "<br>" + app.locale.getString("TEACHERMAINLAYOUT_SELECTCLASSBLOCKNOTIFICATION_DESCRIPTION"), Notification.TYPE_HUMANIZED_MESSAGE); } } public void changedDate(ValueChangeEvent event) { table.removeAllItems(); setComboBoxItems(classblockComboBox, app.storage.classblocksOfTeacherOnDate(app.user.getID(), (Date) event.getProperty().getValue())); } /** Loads students data into table. */ public void loadTable(int idgroup) { table.removeAllItems(); Collection<Student> collection = app.storage.studentsOfGroup(idgroup); for (Iterator<Student> it = collection.iterator(); it.hasNext();) { Student student = it.next(); CheckBox missCheckBox = new CheckBox(); missCheckBox.setData(student); if (app.storage.existsMiss(Miss.MISS, (Date) datePopupDateField.getValue(), ((Classblock) classblockComboBox.getValue()).getID(), student.getID())) { missCheckBox.setValue(true); } missCheckBox.setImmediate(true); missCheckBox.addListener(new Button.ClickListener() { @Override public void buttonClick(ClickEvent event) { Student student = (Student) event.getButton().getData(); Miss miss = new Miss(0, Miss.MISS, (Date) datePopupDateField.getValue(), "", student.getID(), app.user.getID(), ((Classblock) classblockComboBox.getValue()).getIDSubject(), ((Classblock) classblockComboBox.getValue()).getID()); if ((Boolean) event.getButton().getValue()) { app.storage.addMiss(miss); } else { // Delete Miss app.storage.deleteMiss(Miss.MISS, miss.getDate(), miss.getIDStudent(), miss.getIDClassblock()); } updateEnabledCheckBoxes(student); } }); CheckBox excusedmissCheckBox = new CheckBox(); excusedmissCheckBox.setData(student); if (app.storage.existsMiss(Miss.EXCUSED_MISS, (Date) datePopupDateField.getValue(), ((Classblock) classblockComboBox.getValue()).getID(), student.getID())) { excusedmissCheckBox.setValue(true); } excusedmissCheckBox.setImmediate(true); excusedmissCheckBox.addListener(new Button.ClickListener() { @Override public void buttonClick(ClickEvent event) { Student student = (Student) event.getButton().getData(); Miss miss = new Miss(0, Miss.EXCUSED_MISS, (Date) datePopupDateField.getValue(), "", student.getID(), app.user.getID(), ((Classblock) classblockComboBox.getValue()).getIDSubject(), ((Classblock) classblockComboBox.getValue()).getID()); if ((Boolean) event.getButton().getValue()) { // New Miss app.storage.addMiss(miss); } else { // Delete Miss app.storage.deleteMiss(Miss.EXCUSED_MISS, miss.getDate(), miss.getIDStudent(), miss.getIDClassblock()); } updateEnabledCheckBoxes(student); } }); CheckBox delayCheckBox = new CheckBox(); delayCheckBox.setData(student); if (app.storage.existsMiss(Miss.DELAY, (Date) datePopupDateField.getValue(), ((Classblock) classblockComboBox.getValue()).getID(), student.getID())) { delayCheckBox.setValue(true); } delayCheckBox.setImmediate(true); delayCheckBox.addListener(new Button.ClickListener() { @Override public void buttonClick(ClickEvent event) { Student student = (Student) event.getButton().getData(); Miss miss = new Miss(0, Miss.DELAY, (Date) datePopupDateField.getValue(), "", student.getID(), app.user.getID(), ((Classblock) classblockComboBox.getValue()).getIDSubject(), ((Classblock) classblockComboBox.getValue()).getID()); if ((Boolean) event.getButton().getValue()) { app.storage.addMiss(miss); } else { app.storage.deleteMiss(Miss.DELAY, miss.getDate(), miss.getIDStudent(), miss.getIDClassblock()); } updateEnabledCheckBoxes(student); } }); CheckBox expulsionCheckBox = new CheckBox(); expulsionCheckBox.setData(student); if (app.storage.existsMiss(Miss.EXPULSION, (Date) datePopupDateField.getValue(), ((Classblock) classblockComboBox.getValue()).getID(), student.getID())) { expulsionCheckBox.setValue(true); } expulsionCheckBox.setImmediate(true); expulsionCheckBox.addListener(new Button.ClickListener() { @Override public void buttonClick(ClickEvent event) { Student student = (Student) event.getButton().getData(); Miss miss = new Miss(0, Miss.EXPULSION, (Date) datePopupDateField.getValue(), "", student.getID(), app.user.getID(), ((Classblock) classblockComboBox.getValue()).getIDSubject(), ((Classblock) classblockComboBox.getValue()).getID()); if ((Boolean) event.getButton().getValue()) { app.storage.addMiss(miss); } else { app.storage.deleteMiss(Miss.EXPULSION, miss.getDate(), miss.getIDStudent(), miss.getIDClassblock()); } updateEnabledCheckBoxes(student); } }); Object row[] = { student.getName(), student.getSurname1(), student.getSurname2(), missCheckBox, excusedmissCheckBox, delayCheckBox, expulsionCheckBox }; table.addItem(row, new Integer(student.getID())); updateEnabledCheckBoxes(student); } } /* Updates the enabled/disabled state of checkboxes for a student */ private void updateEnabledCheckBoxes(Student student) { boolean missFlag = true; boolean excusedFlag = true; boolean delayFlag = true; boolean expulsionFlag = true; CheckBox missCheckBox = (CheckBox) table.getItem(student.getID()).getItemProperty("Miss").getValue(); if ((Boolean) missCheckBox.getValue()) { excusedFlag = false; delayFlag = false; expulsionFlag = false; } CheckBox excusedCheckBox = (CheckBox) table.getItem(student.getID()).getItemProperty("Excused").getValue(); if ((Boolean) excusedCheckBox.getValue()) { missFlag = false; delayFlag = false; expulsionFlag = false; } CheckBox delayCheckBox = (CheckBox) table.getItem(student.getID()).getItemProperty("Delay").getValue(); if ((Boolean) delayCheckBox.getValue()) { missFlag = false; excusedFlag = false; } CheckBox expulsionCheckBox = (CheckBox) table.getItem(student.getID()).getItemProperty("Expulsion") .getValue(); if ((Boolean) expulsionCheckBox.getValue()) { missFlag = false; excusedFlag = false; } if (missFlag != missCheckBox.isEnabled()) missCheckBox.setEnabled(missFlag); if (excusedFlag != excusedCheckBox.isEnabled()) excusedCheckBox.setEnabled(excusedFlag); if (delayFlag != delayCheckBox.isEnabled()) delayCheckBox.setEnabled(delayFlag); if (expulsionFlag != expulsionCheckBox.isEnabled()) expulsionCheckBox.setEnabled(expulsionFlag); } private class PasswordChangeWindow extends Window { private final Form passwordForm = new Form(); private final PasswordInfo passwordInfo = new PasswordInfo(); public class PasswordInfo { String passwordA = ""; String passwordB = ""; public String getPasswordA() { return passwordA; } public void setPasswordA(String passwordA) { this.passwordA = passwordA; } public String getPasswordB() { return passwordB; } public void setPasswordB(String passwordB) { this.passwordB = passwordB; } } public PasswordChangeWindow() { BeanItem<PasswordInfo> passwordBean = new BeanItem<PasswordInfo>(passwordInfo); passwordForm.setItemDataSource(passwordBean); TextField tf = (TextField) passwordForm.getField("passwordA"); tf.setRequired(true); tf.setCaption(app.locale.getString("TEACHERMAINLAYOUT_PASSWORDA_CAPTION")); tf.setRequiredError(app.locale.getString("TEACHERMAINLAYOUT_PASSWORDA_REQUIREDERROR")); tf.setSecret(true); tf = (TextField) passwordForm.getField("passwordB"); tf.setRequired(true); tf.setCaption(app.locale.getString("TEACHERMAINLAYOUT_PASSWORDB_CAPTION")); tf.setRequiredError(app.locale.getString("TEACHERMAINLAYOUT_PASSWORDB_REQUIREDERROR")); tf.setSecret(true); passwordForm.setImmediate(true); Button okButton = new Button("Ok"); okButton.setIcon(new ThemeResource("../runo/icons/16/ok.png")); okButton.addListener(new Button.ClickListener() { @Override public void buttonClick(ClickEvent event) { Window parentWindow = (Window) getWindow().getParent(); if (passwordInfo.passwordA.equals(passwordInfo.passwordB)) { app.user.setPassword(app.storage.getPasswordHash(passwordInfo.passwordA)); app.storage.updateTeacher(app.user); parentWindow.showNotification( app.locale.getString("TEACHERMAINLAYOUT_PASSWORDCHANGEOKNOTIFICATION_CAPTION"), app.locale.getString("TEACHERMAINLAYOUT_PASSWORDCHANGEOKNOTIFICATION_DESCRIPTION"), Notification.TYPE_TRAY_NOTIFICATION); // Close window parentWindow.removeWindow(passwordChangeWindow); passwordForm.getField("passwordA").setValue(""); passwordForm.getField("passwordB").setValue(""); } else { parentWindow.showNotification( app.locale.getString("TEACHERMAINLAYOUT_PASSWORDCHANGEERRORNOTIFICATION_CAPTION"), app.locale .getString("TEACHERMAINLAYOUT_PASSWORDCHANGEERRORNOTIFICATION_DESCRIPTION"), Notification.TYPE_WARNING_MESSAGE); } } }); passwordForm.getFooter().addComponent(okButton); Button cancelButton = new Button("Cancel"); cancelButton.setIcon(new ThemeResource("../runo/icons/16/cancel.png")); cancelButton.addListener(new Button.ClickListener() { @Override public void buttonClick(ClickEvent event) { // Close window ((Window) passwordChangeWindow.getParent()).removeWindow(passwordChangeWindow); passwordForm.getField("passwordA").setValue(""); passwordForm.getField("passwordB").setValue(""); } }); passwordForm.getFooter().addComponent(cancelButton); addComponent(passwordForm); VerticalLayout layout = (VerticalLayout) getContent(); layout.setSpacing(true); layout.setMargin(true); layout.setSizeUndefined(); // We want the window to has automatic size !!! setModal(true); } } }