Mercurial > projects > dwt-linux
view dwtexamples/addressbook/AddressBook.d @ 106:396a9fa07672
Added addressbook example. Does not yet compile
author | Frank Benoit <benoit@tionex.de> |
---|---|
date | Fri, 18 Jan 2008 20:53:49 +0100 |
parents | |
children | 3476fddbb4c8 |
line wrap: on
line source
/******************************************************************************* * Copyright (c) 2000, 2006 IBM Corporation 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: * IBM Corporation - initial API and implementation *******************************************************************************/ module dwtexamples.addressbook.AddressBook; // /* Imports */ // import java.io.BufferedReader; // import java.io.File; // import java.io.FileNotFoundException; // import java.io.FileReader; // import java.io.FileWriter; // import java.io.IOException; // import java.util.Arrays; // import java.util.Comparator; // import java.util.ResourceBundle; import dwt.DWT; import dwt.events.MenuAdapter; import dwt.events.MenuEvent; import dwt.events.SelectionAdapter; import dwt.events.SelectionEvent; import dwt.events.ShellAdapter; import dwt.events.ShellEvent; import dwt.graphics.Cursor; import dwt.layout.FillLayout; import dwt.widgets.Display; import dwt.widgets.FileDialog; import dwt.widgets.Menu; import dwt.widgets.MenuItem; import dwt.widgets.MessageBox; import dwt.widgets.Shell; import dwt.widgets.Table; import dwt.widgets.TableColumn; import dwt.widgets.TableItem; import dwtexamples.addressbook.SearchDialog; import dwtexamples.addressbook.DataEntryDialog; import dwt.dwthelper.ResourceBundle; void main() { Display display = new Display(); AddressBook application = new AddressBook(); Shell shell = application.open(display); while(!shell.isDisposed()){ if(!display.readAndDispatch()) display.sleep(); } display.dispose(); } /** * AddressBookExample is an example that uses <code>org.eclipse.swt</code> * libraries to implement a simple address book. This application has * save, load, sorting, and searching functions common * to basic address books. */ public class AddressBook { private static ResourceBundle resAddressBook; private Shell shell; private Table table; private SearchDialog searchDialog; private File file; private bool isModified; private char[][] copyBuffer; private int lastSortColumn= -1; private static const char[] DELIMITER = "\t"; private static char[][] columnNames; public this(){ if( resAddressBook is null ){ resAddressBook = ResourceBundle.getBundle("examples_addressbook"); columnNames = [ resAddressBook.getString("Last_name"), resAddressBook.getString("First_name"), resAddressBook.getString("Business_phone"), resAddressBook.getString("Home_phone"), resAddressBook.getString("Email"), resAddressBook.getString("Fax") ]; } } public Shell open(Display display) { shell = new Shell(display); shell.setLayout(new FillLayout()); shell.addShellListener(new class() ShellAdapter { public void shellClosed(ShellEvent e) { e.doit = closeAddressBook(); } }); createMenuBar(); searchDialog = new SearchDialog(shell); searchDialog.setSearchAreaNames(columnNames); searchDialog.setSearchAreaLabel(resAddressBook.getString("Column")); searchDialog.addFindListener(new class() FindListener { public bool find() { return findEntry(); } }); table = new Table(shell, DWT.SINGLE | DWT.BORDER | DWT.FULL_SELECTION); table.setHeaderVisible(true); table.setMenu(createPopUpMenu()); table.addSelectionListener(new class() SelectionAdapter { public void widgetDefaultSelected(SelectionEvent e) { TableItem[] items = table.getSelection(); if (items.length > 0) editEntry(items[0]); } }); for(int i = 0; i < columnNames.length; i++) { TableColumn column = new TableColumn(table, DWT.NONE); column.setText(columnNames[i]); column.setWidth(150); final int columnIndex = i; column.addSelectionListener(new class() SelectionAdapter { public void widgetSelected(SelectionEvent e) { sort(columnIndex); } }); } newAddressBook(); shell.setSize(table.computeSize(DWT.DEFAULT, DWT.DEFAULT).x, 300); shell.open(); return shell; } private bool closeAddressBook() { if(isModified) { //ask user if they want to save current address book MessageBox box = new MessageBox(shell, DWT.ICON_WARNING | DWT.YES | DWT.NO | DWT.CANCEL); box.setText(shell.getText()); box.setMessage(resAddressBook.getString("Close_save")); int choice = box.open(); if(choice is DWT.CANCEL) { return false; } else if(choice is DWT.YES) { if (!save()) return false; } } TableItem[] items = table.getItems(); for (int i = 0; i < items.length; i ++) { items[i].dispose(); } return true; } /** * Creates the menu at the top of the shell where most * of the programs functionality is accessed. * * @return The <code>Menu</code> widget that was created */ private Menu createMenuBar() { Menu menuBar = new Menu(shell, DWT.BAR); shell.setMenuBar(menuBar); //create each header and subMenu for the menuBar createFileMenu(menuBar); createEditMenu(menuBar); createSearchMenu(menuBar); createHelpMenu(menuBar); return menuBar; } /** * Converts an encoded <code>char[]</code> to a char[] array representing a table entry. */ private char[][] decodeLine(char[] line) { if(line is null) return null; char[][] parsedLine = new char[][table.getColumnCount()]; for(int i = 0; i < parsedLine.length - 1; i++) { int index = line.indexOf(DELIMITER); if (index > -1) { parsedLine[i] = line.substring(0, index); line = line.substring(index + DELIMITER.length(), line.length()); } else { return null; } } if (line.indexOf(DELIMITER) !is -1) return null; parsedLine[parsedLine.length - 1] = line; return parsedLine; } private void displayError(char[] msg) { MessageBox box = new MessageBox(shell, DWT.ICON_ERROR); box.setMessage(msg); box.open(); } private void editEntry(TableItem item) { DataEntryDialog dialog = new DataEntryDialog(shell); dialog.setLabels(columnNames); char[][] values = new char[][table.getColumnCount()]; for (int i = 0; i < values.length; i++) { values[i] = item.getText(i); } dialog.setValues(values); values = dialog.open(); if (values !is null) { item.setText(values); isModified = true; } } private char[] encodeLine(char[][] tableItems) { char[] line = ""; for (int i = 0; i < tableItems.length - 1; i++) { line += tableItems[i] + DELIMITER; } line += tableItems[tableItems.length - 1] + "\n"; return line; } private bool findEntry() { Cursor waitCursor = new Cursor(shell.getDisplay(), DWT.CURSOR_WAIT); shell.setCursor(waitCursor); bool matchCase = searchDialog.getMatchCase(); bool matchWord = searchDialog.getMatchWord(); char[] searchString = searchDialog.getSearchString(); int column = searchDialog.getSelectedSearchArea(); searchString = matchCase ? searchString : searchString.toLowerCase(); bool found = false; if (searchDialog.getSearchDown()) { for(int i = table.getSelectionIndex() + 1; i < table.getItemCount(); i++) { if (found = findMatch(searchString, table.getItem(i), column, matchWord, matchCase)){ table.setSelection(i); break; } } } else { for(int i = table.getSelectionIndex() - 1; i > -1; i--) { if (found = findMatch(searchString, table.getItem(i), column, matchWord, matchCase)){ table.setSelection(i); break; } } } shell.setCursor(null); waitCursor.dispose(); return found; } private bool findMatch(char[] searchString, TableItem item, int column, bool matchWord, bool matchCase) { char[] tableText = matchCase ? item.getText(column) : item.getText(column).toLowerCase(); if (matchWord) { if (tableText !is null && tableText.equals(searchString)) { return true; } } else { if(tableText!is null && tableText.indexOf(searchString) !is -1) { return true; } } return false; } private void newAddressBook() { shell.setText(resAddressBook.getString("Title_bar") + resAddressBook.getString("New_title")); file = null; isModified = false; } private void newEntry() { DataEntryDialog dialog = new DataEntryDialog(shell); dialog.setLabels(columnNames); char[][] data = dialog.open(); if (data !is null) { TableItem item = new TableItem(table, DWT.NONE); item.setText(data); isModified = true; } } private void openAddressBook() { FileDialog fileDialog = new FileDialog(shell, DWT.OPEN); fileDialog.setFilterExtensions(["*.adr;", "*.*"]); fileDialog.setFilterNames(new char[][] [resAddressBook.getString("Book_filter_name") + " (*.adr)", resAddressBook.getString("All_filter_name") + " (*.*)"]); char[] name = fileDialog.open(); if(name is null) return; File file = new File(name); if (!file.exists()) { displayError(resAddressBook.getString("File")~file.getName()~" "~resAddressBook.getString("Does_not_exist")); return; } Cursor waitCursor = new Cursor(shell.getDisplay(), DWT.CURSOR_WAIT); shell.setCursor(waitCursor); FileReader fileReader = null; BufferedReader bufferedReader = null; char[][] data = new char[][0]; try { fileReader = new FileReader(file.getAbsolutePath()); bufferedReader = new BufferedReader(fileReader); char[] nextLine = bufferedReader.readLine(); while (nextLine !is null){ char[][] newData = new char[][data.length + 1]; System.arraycopy(data, 0, newData, 0, data.length); newData[data.length] = nextLine; data = newData; nextLine = bufferedReader.readLine(); } } catch(FileNotFoundException e) { displayError(resAddressBook.getString("File_not_found") ~ "\n" ~ file.getName()); return; } catch (IOException e ) { displayError(resAddressBook.getString("IO_error_read") ~ "\n" ~ file.getName()); return; } finally { shell.setCursor(null); waitCursor.dispose(); if(fileReader !is null) { try { fileReader.close(); } catch(IOException e) { displayError(resAddressBook.getString("IO_error_close") ~ "\n" ~file.getName()); return; } } } char[][][] tableInfo = new char[][data.length][table.getColumnCount()]; int writeIndex = 0; for (int i = 0; i < data.length; i++) { char[][] line = decodeLine(data[i]); if (line !is null) tableInfo[writeIndex++] = line; } if (writeIndex !is data.length) { char[][][] result = new char[][writeIndex][table.getColumnCount()]; System.arraycopy(tableInfo, 0, result, 0, writeIndex); tableInfo = result; } Arrays.sort(tableInfo, new RowComparator(0)); for (int i = 0; i < tableInfo.length; i++) { TableItem item = new TableItem(table, DWT.NONE); item.setText(tableInfo[i]); } shell.setText(resAddressBook.getString("Title_bar")~fileDialog.getFileName()); isModified = false; this.file = file; } private bool save() { if(file is null) return saveAs(); Cursor waitCursor = new Cursor(shell.getDisplay(), DWT.CURSOR_WAIT); shell.setCursor(waitCursor); TableItem[] items = table.getItems(); char[][] lines = new char[][items.length]; for(int i = 0; i < items.length; i++) { char[][] itemText = new char[][table.getColumnCount()]; for (int j = 0; j < itemText.length; j++) { itemText[j] = items[i].getText(j); } lines[i] = encodeLine(itemText); } FileWriter fileWriter = null; try { fileWriter = new FileWriter(file.getAbsolutePath(), false); for (int i = 0; i < lines.length; i++) { fileWriter.write(lines[i]); } } catch(FileNotFoundException e) { displayError(resAddressBook.getString("File_not_found") ~ "\n" ~ file.getName()); return false; } catch(IOException e ) { displayError(resAddressBook.getString("IO_error_write") ~ "\n" ~ file.getName()); return false; } finally { shell.setCursor(null); waitCursor.dispose(); if(fileWriter !is null) { try { fileWriter.close(); } catch(IOException e) { displayError(resAddressBook.getString("IO_error_close") ~ "\n" ~ file.getName()); return false; } } } shell.setText(resAddressBook.getString("Title_bar")+file.getName()); isModified = false; return true; } private bool saveAs() { FileDialog saveDialog = new FileDialog(shell, DWT.SAVE); saveDialog.setFilterExtensions(["*.adr;", "*.*"]); saveDialog.setFilterNames(["Address Books (*.adr)", "All Files "]); saveDialog.open(); char[] name = saveDialog.getFileName(); if(name.equals("")) return false; if(name.indexOf(".adr") !is name.length() - 4) { name += ".adr"; } File file = new File(saveDialog.getFilterPath(), name); if(file.exists()) { MessageBox box = new MessageBox(shell, DWT.ICON_WARNING | DWT.YES | DWT.NO); box.setText(resAddressBook.getString("Save_as_title")); box.setMessage(resAddressBook.getString("File") ~ file.getName()~" "~resAddressBook.getString("Query_overwrite")); if(box.open() !is DWT.YES) { return false; } } this.file = file; return save(); } private void sort(int column) { if(table.getItemCount() <= 1) return; TableItem[] items = table.getItems(); char[][][] data = new char[][items.length][table.getColumnCount()]; for(int i = 0; i < items.length; i++) { for(int j = 0; j < table.getColumnCount(); j++) { data[i][j] = items[i].getText(j); } } Arrays.sort(data, new RowComparator(column)); if (lastSortColumn !is column) { table.setSortColumn(table.getColumn(column)); table.setSortDirection(DWT.DOWN); for (int i = 0; i < data.length; i++) { items[i].setText(data[i]); } lastSortColumn = column; } else { // reverse order if the current column is selected again table.setSortDirection(DWT.UP); int j = data.length -1; for (int i = 0; i < data.length; i++) { items[i].setText(data[j--]); } lastSortColumn = -1; } } /** * Creates all the items located in the File submenu and * associate all the menu items with their appropriate * functions. * * @param menuBar Menu * the <code>Menu</code> that file contain * the File submenu. */ private void createFileMenu(Menu menuBar) { //File menu. MenuItem item = new MenuItem(menuBar, DWT.CASCADE); item.setText(resAddressBook.getString("File_menu_title")); Menu menu = new Menu(shell, DWT.DROP_DOWN); item.setMenu(menu); /** * Adds a listener to handle enabling and disabling * some items in the Edit submenu. */ menu.addMenuListener(new class() MenuAdapter { public void menuShown(MenuEvent e) { Menu menu = cast(Menu)e.widget; MenuItem[] items = menu.getItems(); items[1].setEnabled(table.getSelectionCount() !is 0); // edit contact items[5].setEnabled((file !is null) && isModified); // save items[6].setEnabled(table.getItemCount() !is 0); // save as } }); //File -> New Contact MenuItem subItem = new MenuItem(menu, DWT.NONE); subItem.setText(resAddressBook.getString("New_contact")); subItem.setAccelerator(DWT.MOD1 + 'N'); subItem.addSelectionListener(new class() SelectionAdapter { public void widgetSelected(SelectionEvent e) { newEntry(); } }); subItem = new MenuItem(menu, DWT.NONE); subItem.setText(resAddressBook.getString("Edit_contact")); subItem.setAccelerator(DWT.MOD1 + 'E'); subItem.addSelectionListener(new class() SelectionAdapter { public void widgetSelected(SelectionEvent e) { TableItem[] items = table.getSelection(); if (items.length is 0) return; editEntry(items[0]); } }); new MenuItem(menu, DWT.SEPARATOR); //File -> New Address Book subItem = new MenuItem(menu, DWT.NONE); subItem.setText(resAddressBook.getString("New_address_book")); subItem.setAccelerator(DWT.MOD1 + 'B'); subItem.addSelectionListener(new class() SelectionAdapter { public void widgetSelected(SelectionEvent e) { if (closeAddressBook()) { newAddressBook(); } } }); //File -> Open subItem = new MenuItem(menu, DWT.NONE); subItem.setText(resAddressBook.getString("Open_address_book")); subItem.setAccelerator(DWT.MOD1 + 'O'); subItem.addSelectionListener(new class() SelectionAdapter { public void widgetSelected(SelectionEvent e) { if (closeAddressBook()) { openAddressBook(); } } }); //File -> Save. subItem = new MenuItem(menu, DWT.NONE); subItem.setText(resAddressBook.getString("Save_address_book")); subItem.setAccelerator(DWT.MOD1 + 'S'); subItem.addSelectionListener(new class() SelectionAdapter { public void widgetSelected(SelectionEvent e) { save(); } }); //File -> Save As. subItem = new MenuItem(menu, DWT.NONE); subItem.setText(resAddressBook.getString("Save_book_as")); subItem.setAccelerator(DWT.MOD1 + 'A'); subItem.addSelectionListener(new class() SelectionAdapter { public void widgetSelected(SelectionEvent e) { saveAs(); } }); new MenuItem(menu, DWT.SEPARATOR); //File -> Exit. subItem = new MenuItem(menu, DWT.NONE); subItem.setText(resAddressBook.getString("Exit")); subItem.addSelectionListener(new class() SelectionAdapter { public void widgetSelected(SelectionEvent e) { shell.close(); } }); } /** * Creates all the items located in the Edit submenu and * associate all the menu items with their appropriate * functions. * * @param menuBar Menu * the <code>Menu</code> that file contain * the Edit submenu. * * @see #createSortMenu() */ private MenuItem createEditMenu(Menu menuBar) { //Edit menu. MenuItem item = new MenuItem(menuBar, DWT.CASCADE); item.setText(resAddressBook.getString("Edit_menu_title")); Menu menu = new Menu(shell, DWT.DROP_DOWN); item.setMenu(menu); /** * Add a listener to handle enabling and disabling * some items in the Edit submenu. */ menu.addMenuListener(new class() MenuAdapter { public void menuShown(MenuEvent e) { Menu menu = cast(Menu)e.widget; MenuItem[] items = menu.getItems(); int count = table.getSelectionCount(); items[0].setEnabled(count !is 0); // edit items[1].setEnabled(count !is 0); // copy items[2].setEnabled(copyBuffer !is null); // paste items[3].setEnabled(count !is 0); // delete items[5].setEnabled(table.getItemCount() !is 0); // sort } }); //Edit -> Edit MenuItem subItem = new MenuItem(menu, DWT.PUSH); subItem.setText(resAddressBook.getString("Edit")); subItem.setAccelerator(DWT.MOD1 + 'E'); subItem.addSelectionListener(new class() SelectionAdapter { public void widgetSelected(SelectionEvent e) { TableItem[] items = table.getSelection(); if (items.length is 0) return; editEntry(items[0]); } }); //Edit -> Copy subItem = new MenuItem(menu, DWT.NONE); subItem.setText(resAddressBook.getString("Copy")); subItem.setAccelerator(DWT.MOD1 + 'C'); subItem.addSelectionListener(new class() SelectionAdapter { public void widgetSelected(SelectionEvent e) { TableItem[] items = table.getSelection(); if (items.length is 0) return; copyBuffer = new char[][table.getColumnCount()]; for (int i = 0; i < copyBuffer.length; i++) { copyBuffer[i] = items[0].getText(i); } } }); //Edit -> Paste subItem = new MenuItem(menu, DWT.NONE); subItem.setText(resAddressBook.getString("Paste")); subItem.setAccelerator(DWT.MOD1 + 'V'); subItem.addSelectionListener(new class() SelectionAdapter { public void widgetSelected(SelectionEvent e) { if (copyBuffer is null) return; TableItem item = new TableItem(table, DWT.NONE); item.setText(copyBuffer); isModified = true; } }); //Edit -> Delete subItem = new MenuItem(menu, DWT.NONE); subItem.setText(resAddressBook.getString("Delete")); subItem.addSelectionListener(new class() SelectionAdapter { public void widgetSelected(SelectionEvent e) { TableItem[] items = table.getSelection(); if (items.length is 0) return; items[0].dispose(); isModified = true; } }); new MenuItem(menu, DWT.SEPARATOR); //Edit -> Sort(Cascade) subItem = new MenuItem(menu, DWT.CASCADE); subItem.setText(resAddressBook.getString("Sort")); Menu submenu = createSortMenu(); subItem.setMenu(submenu); return item; } /** * Creates all the items located in the Sort cascading submenu and * associate all the menu items with their appropriate * functions. * * @return Menu * The cascading menu with all the sort menu items on it. */ private Menu createSortMenu() { Menu submenu = new Menu(shell, DWT.DROP_DOWN); MenuItem subitem; for(int i = 0; i < columnNames.length; i++) { subitem = new MenuItem (submenu, DWT.NONE); subitem.setText(columnNames [i]); final int column = i; subitem.addSelectionListener(new class() SelectionAdapter { public void widgetSelected(SelectionEvent e) { sort(column); } }); } return submenu; } /** * Creates all the items located in the Search submenu and * associate all the menu items with their appropriate * functions. * * @param menuBar Menu * the <code>Menu</code> that file contain * the Search submenu. */ private void createSearchMenu(Menu menuBar) { //Search menu. MenuItem item = new MenuItem(menuBar, DWT.CASCADE); item.setText(resAddressBook.getString("Search_menu_title")); Menu searchMenu = new Menu(shell, DWT.DROP_DOWN); item.setMenu(searchMenu); //Search -> Find... item = new MenuItem(searchMenu, DWT.NONE); item.setText(resAddressBook.getString("Find")); item.setAccelerator(DWT.MOD1 + 'F'); item.addSelectionListener(new class() SelectionAdapter { public void widgetSelected(SelectionEvent e) { searchDialog.setMatchCase(false); searchDialog.setMatchWord(false); searchDialog.setSearchDown(true); searchDialog.setSearchString(""); searchDialog.setSelectedSearchArea(0); searchDialog.open(); } }); //Search -> Find Next item = new MenuItem(searchMenu, DWT.NONE); item.setText(resAddressBook.getString("Find_next")); item.setAccelerator(DWT.F3); item.addSelectionListener(new class() SelectionAdapter { public void widgetSelected(SelectionEvent e) { searchDialog.open(); } }); } /** * Creates all items located in the popup menu and associates * all the menu items with their appropriate functions. * * @return Menu * The created popup menu. */ private Menu createPopUpMenu() { Menu popUpMenu = new Menu(shell, DWT.POP_UP); /** * Adds a listener to handle enabling and disabling * some items in the Edit submenu. */ popUpMenu.addMenuListener(new class() MenuAdapter { public void menuShown(MenuEvent e) { Menu menu = cast(Menu)e.widget; MenuItem[] items = menu.getItems(); int count = table.getSelectionCount(); items[2].setEnabled(count !is 0); // edit items[3].setEnabled(count !is 0); // copy items[4].setEnabled(copyBuffer !is null); // paste items[5].setEnabled(count !is 0); // delete items[7].setEnabled(table.getItemCount() !is 0); // find } }); //New MenuItem item = new MenuItem(popUpMenu, DWT.PUSH); item.setText(resAddressBook.getString("Pop_up_new")); item.addSelectionListener(new class() SelectionAdapter { public void widgetSelected(SelectionEvent e) { newEntry(); } }); new MenuItem(popUpMenu, DWT.SEPARATOR); //Edit item = new MenuItem(popUpMenu, DWT.PUSH); item.setText(resAddressBook.getString("Pop_up_edit")); item.addSelectionListener(new class() SelectionAdapter { public void widgetSelected(SelectionEvent e) { TableItem[] items = table.getSelection(); if (items.length is 0) return; editEntry(items[0]); } }); //Copy item = new MenuItem(popUpMenu, DWT.PUSH); item.setText(resAddressBook.getString("Pop_up_copy")); item.addSelectionListener(new class() SelectionAdapter { public void widgetSelected(SelectionEvent e) { TableItem[] items = table.getSelection(); if (items.length is 0) return; copyBuffer = new char[][table.getColumnCount()]; for (int i = 0; i < copyBuffer.length; i++) { copyBuffer[i] = items[0].getText(i); } } }); //Paste item = new MenuItem(popUpMenu, DWT.PUSH); item.setText(resAddressBook.getString("Pop_up_paste")); item.addSelectionListener(new class() SelectionAdapter { public void widgetSelected(SelectionEvent e) { if (copyBuffer is null) return; TableItem item = new TableItem(table, DWT.NONE); item.setText(copyBuffer); isModified = true; } }); //Delete item = new MenuItem(popUpMenu, DWT.PUSH); item.setText(resAddressBook.getString("Pop_up_delete")); item.addSelectionListener(new class() SelectionAdapter { public void widgetSelected(SelectionEvent e) { TableItem[] items = table.getSelection(); if (items.length is 0) return; items[0].dispose(); isModified = true; } }); new MenuItem(popUpMenu, DWT.SEPARATOR); //Find... item = new MenuItem(popUpMenu, DWT.PUSH); item.setText(resAddressBook.getString("Pop_up_find")); item.addSelectionListener(new class() SelectionAdapter { public void widgetSelected(SelectionEvent e) { searchDialog.open(); } }); return popUpMenu; } /** * Creates all the items located in the Help submenu and * associate all the menu items with their appropriate * functions. * * @param menuBar Menu * the <code>Menu</code> that file contain * the Help submenu. */ private void createHelpMenu(Menu menuBar) { //Help Menu MenuItem item = new MenuItem(menuBar, DWT.CASCADE); item.setText(resAddressBook.getString("Help_menu_title")); Menu menu = new Menu(shell, DWT.DROP_DOWN); item.setMenu(menu); //Help -> About Text Editor MenuItem subItem = new MenuItem(menu, DWT.NONE); subItem.setText(resAddressBook.getString("About")); subItem.addSelectionListener(new class() SelectionAdapter { public void widgetSelected(SelectionEvent e) { MessageBox box = new MessageBox(shell, DWT.NONE); box.setText(resAddressBook.getString("About_1") + shell.getText()); box.setMessage(shell.getText() + resAddressBook.getString("About_2")); box.open(); } }); } /** * To compare entries (rows) by the given column */ private class RowComparator : Comparator { private int column; /** * Constructs a RowComparator given the column index * @param col The index (starting at zero) of the column */ public this(int col) { column = col; } /** * Compares two rows (type char[][]) using the specified * column entry. * @param obj1 First row to compare * @param obj2 Second row to compare * @return negative if obj1 less than obj2, positive if * obj1 greater than obj2, and zero if equal. */ public int compare(Object obj1, Object obj2) { char[][] row1 = cast(char[][])obj1; char[][] row2 = cast(char[][])obj2; return row1[column].compareTo(row2[column]); } } }