addressbook.java

SUN公司eclipse3.2.2经典例子

	}
	
}
/**
 * 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, SWT.CASCADE);
	item.setText(resAddressBook.getString("File_menu_title"));
	Menu menu = new Menu(shell, SWT.DROP_DOWN);
	item.setMenu(menu);
	/** 
	 * Adds a listener to handle enabling and disabling 
	 * some items in the Edit submenu.
	 */
	menu.addMenuListener(new MenuAdapter() {
		public void menuShown(MenuEvent e) {
			Menu menu = (Menu)e.widget;
			MenuItem[] items = menu.getItems();
			items[1].setEnabled(table.getSelectionCount() != 0); // edit contact
			items[5].setEnabled((file != null) && isModified); // save
			items[6].setEnabled(table.getItemCount() != 0); // save as
		}
	});


	//File -> New Contact
	MenuItem subItem = new MenuItem(menu, SWT.NONE);
	subItem.setText(resAddressBook.getString("New_contact"));
	subItem.setAccelerator(SWT.MOD1 + 'N');
	subItem.addSelectionListener(new SelectionAdapter() {
		public void widgetSelected(SelectionEvent e) {
			newEntry();
		}
	});
	subItem = new MenuItem(menu, SWT.NONE);
	subItem.setText(resAddressBook.getString("Edit_contact"));
	subItem.setAccelerator(SWT.MOD1 + 'E');
	subItem.addSelectionListener(new SelectionAdapter() {
		public void widgetSelected(SelectionEvent e) {
			TableItem[] items = table.getSelection();
			if (items.length == 0) return;
			editEntry(items[0]);
		}
	});

	
	new MenuItem(menu, SWT.SEPARATOR);
	
	//File -> New Address Book
	subItem = new MenuItem(menu, SWT.NONE);
	subItem.setText(resAddressBook.getString("New_address_book"));
	subItem.setAccelerator(SWT.MOD1 + 'B');
	subItem.addSelectionListener(new SelectionAdapter() {
		public void widgetSelected(SelectionEvent e) {
			if (closeAddressBook()) {
				newAddressBook();
			}
		}
	});

	//File -> Open
	subItem = new MenuItem(menu, SWT.NONE);
	subItem.setText(resAddressBook.getString("Open_address_book"));
	subItem.setAccelerator(SWT.MOD1 + 'O');
	subItem.addSelectionListener(new SelectionAdapter() {
		public void widgetSelected(SelectionEvent e) {
			if (closeAddressBook()) {
				openAddressBook();
			}
		}
	});

	//File -> Save.
	subItem = new MenuItem(menu, SWT.NONE);
	subItem.setText(resAddressBook.getString("Save_address_book"));
	subItem.setAccelerator(SWT.MOD1 + 'S');
	subItem.addSelectionListener(new SelectionAdapter() {
		public void widgetSelected(SelectionEvent e) {
			save();
		}
	});
	
	//File -> Save As.
	subItem = new MenuItem(menu, SWT.NONE);
	subItem.setText(resAddressBook.getString("Save_book_as"));
	subItem.setAccelerator(SWT.MOD1 + 'A');
	subItem.addSelectionListener(new SelectionAdapter() {
		public void widgetSelected(SelectionEvent e) {
			saveAs();
		}
	});

		
	new MenuItem(menu, SWT.SEPARATOR);
	
	//File -> Exit.
	subItem = new MenuItem(menu, SWT.NONE);
	subItem.setText(resAddressBook.getString("Exit"));
	subItem.addSelectionListener(new 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, SWT.CASCADE);
	item.setText(resAddressBook.getString("Edit_menu_title"));
	Menu menu = new Menu(shell, SWT.DROP_DOWN);
	item.setMenu(menu);
	
	/** 
	 * Add a listener to handle enabling and disabling 
	 * some items in the Edit submenu.
	 */
	menu.addMenuListener(new MenuAdapter() {
		public void menuShown(MenuEvent e) {
			Menu menu = (Menu)e.widget;
			MenuItem[] items = menu.getItems();
			int count = table.getSelectionCount();
			items[0].setEnabled(count != 0); // edit
			items[1].setEnabled(count != 0); // copy
			items[2].setEnabled(copyBuffer != null); // paste
			items[3].setEnabled(count != 0); // delete
			items[5].setEnabled(table.getItemCount() != 0); // sort
		}
	});
	
	//Edit -> Edit
	MenuItem subItem = new MenuItem(menu, SWT.PUSH);
	subItem.setText(resAddressBook.getString("Edit"));
	subItem.setAccelerator(SWT.MOD1 + 'E');
	subItem.addSelectionListener(new SelectionAdapter() {
		public void widgetSelected(SelectionEvent e) {
			TableItem[] items = table.getSelection();
			if (items.length == 0) return;
			editEntry(items[0]);
		}
	});

	//Edit -> Copy
	subItem = new MenuItem(menu, SWT.NONE);
	subItem.setText(resAddressBook.getString("Copy"));
	subItem.setAccelerator(SWT.MOD1 + 'C');
	subItem.addSelectionListener(new SelectionAdapter() {
		public void widgetSelected(SelectionEvent e) {
			TableItem[] items = table.getSelection();
			if (items.length == 0) return;
			copyBuffer = new String[table.getColumnCount()];
			for (int i = 0; i < copyBuffer.length; i++) {
				copyBuffer[i] = items[0].getText(i);
			}
		}
	});
	
	//Edit -> Paste
	subItem = new MenuItem(menu, SWT.NONE);
	subItem.setText(resAddressBook.getString("Paste"));
	subItem.setAccelerator(SWT.MOD1 + 'V');
	subItem.addSelectionListener(new SelectionAdapter() {
		public void widgetSelected(SelectionEvent e) {
			if (copyBuffer == null) return;
			TableItem item = new TableItem(table, SWT.NONE);
			item.setText(copyBuffer);
			isModified = true;
		}
	});
	
	//Edit -> Delete
	subItem = new MenuItem(menu, SWT.NONE);
	subItem.setText(resAddressBook.getString("Delete"));
	subItem.addSelectionListener(new SelectionAdapter() {
		public void widgetSelected(SelectionEvent e) {
			TableItem[] items = table.getSelection();
			if (items.length == 0) return;
			items[0].dispose();
			isModified = true;		}
	});
	
	new MenuItem(menu, SWT.SEPARATOR);
	
	//Edit -> Sort(Cascade)
	subItem = new MenuItem(menu, SWT.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, SWT.DROP_DOWN);
	MenuItem subitem;
	for(int i = 0; i < columnNames.length; i++) {
		subitem = new MenuItem (submenu, SWT.NONE);
		subitem.setText(columnNames [i]);
		final int column = i;
		subitem.addSelectionListener(new 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, SWT.CASCADE);
	item.setText(resAddressBook.getString("Search_menu_title"));
	Menu searchMenu = new Menu(shell, SWT.DROP_DOWN);
	item.setMenu(searchMenu);

	//Search -> Find...
	item = new MenuItem(searchMenu, SWT.NONE);
	item.setText(resAddressBook.getString("Find"));
	item.setAccelerator(SWT.MOD1 + 'F');
	item.addSelectionListener(new 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, SWT.NONE);
	item.setText(resAddressBook.getString("Find_next"));
	item.setAccelerator(SWT.F3);
	item.addSelectionListener(new 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, SWT.POP_UP);

	/** 
	 * Adds a listener to handle enabling and disabling 
	 * some items in the Edit submenu.
	 */
	popUpMenu.addMenuListener(new MenuAdapter() {
		public void menuShown(MenuEvent e) {
			Menu menu = (Menu)e.widget;
			MenuItem[] items = menu.getItems();
			int count = table.getSelectionCount();
			items[2].setEnabled(count != 0); // edit
			items[3].setEnabled(count != 0); // copy
			items[4].setEnabled(copyBuffer != null); // paste
			items[5].setEnabled(count != 0); // delete
			items[7].setEnabled(table.getItemCount() != 0); // find
		}
	});

	//New
	MenuItem item = new MenuItem(popUpMenu, SWT.PUSH);
	item.setText(resAddressBook.getString("Pop_up_new"));
	item.addSelectionListener(new SelectionAdapter() {
		public void widgetSelected(SelectionEvent e) {
			newEntry();
		}
	});
	
	new MenuItem(popUpMenu, SWT.SEPARATOR);	
	
	//Edit
	item = new MenuItem(popUpMenu, SWT.PUSH);
	item.setText(resAddressBook.getString("Pop_up_edit"));
	item.addSelectionListener(new SelectionAdapter() {
		public void widgetSelected(SelectionEvent e) {
			TableItem[] items = table.getSelection();
			if (items.length == 0) return;
			editEntry(items[0]);
		}
	});

	//Copy
	item = new MenuItem(popUpMenu, SWT.PUSH);
	item.setText(resAddressBook.getString("Pop_up_copy"));
	item.addSelectionListener(new SelectionAdapter() {
		public void widgetSelected(SelectionEvent e) {
			TableItem[] items = table.getSelection();
			if (items.length == 0) return;
			copyBuffer = new String[table.getColumnCount()];
			for (int i = 0; i < copyBuffer.length; i++) {
				copyBuffer[i] = items[0].getText(i);
			}
		}
	});
	
	//Paste
	item = new MenuItem(popUpMenu, SWT.PUSH);
	item.setText(resAddressBook.getString("Pop_up_paste"));
	item.addSelectionListener(new SelectionAdapter() {
		public void widgetSelected(SelectionEvent e) {
			if (copyBuffer == null) return;
			TableItem item = new TableItem(table, SWT.NONE);
			item.setText(copyBuffer);
			isModified = true;
		}
	});
	
	//Delete
	item = new MenuItem(popUpMenu, SWT.PUSH);
	item.setText(resAddressBook.getString("Pop_up_delete"));
	item.addSelectionListener(new SelectionAdapter() {
		public void widgetSelected(SelectionEvent e) {
			TableItem[] items = table.getSelection();
			if (items.length == 0) return;
			items[0].dispose();
			isModified = true;
		}
	});
	
	new MenuItem(popUpMenu, SWT.SEPARATOR);	
	
	//Find...
	item = new MenuItem(popUpMenu, SWT.PUSH);
	item.setText(resAddressBook.getString("Pop_up_find"));
	item.addSelectionListener(new 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, SWT.CASCADE);
	item.setText(resAddressBook.getString("Help_menu_title"));	
	Menu menu = new Menu(shell, SWT.DROP_DOWN);
	item.setMenu(menu);
	
	//Help -> About Text Editor
	MenuItem subItem = new MenuItem(menu, SWT.NONE);
	subItem.setText(resAddressBook.getString("About"));
	subItem.addSelectionListener(new SelectionAdapter() {
		public void widgetSelected(SelectionEvent e) {
			MessageBox box = new MessageBox(shell, SWT.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 implements Comparator {
	private int column;
	
	/**
	 * Constructs a RowComparator given the column index
	 * @param col The index (starting at zero) of the column
	 */
	public RowComparator(int col) {
		column = col;
	}
	
	/**
	 * Compares two rows (type String[]) 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) {
		String[] row1 = (String[])obj1;
		String[] row2 = (String[])obj2;
		
		return row1[column].compareTo(row2[column]);
	}
}
}