Eclipse RCP入门（创建一个日期选择器）
直接上代码。

package org.autumn.rcp.learn;import java.util.Calendar;import java.util.regex.Pattern;import org.eclipse.jface.dialogs.Dialog;import org.eclipse.swt.SWT;import org.eclipse.swt.events.MouseAdapter;import org.eclipse.swt.events.MouseEvent;import org.eclipse.swt.events.SelectionAdapter;import org.eclipse.swt.events.SelectionEvent;import org.eclipse.swt.graphics.Color;import org.eclipse.swt.graphics.Point;import org.eclipse.swt.graphics.Rectangle;import org.eclipse.swt.layout.GridLayout;import org.eclipse.swt.widgets.Combo;import org.eclipse.swt.widgets.Composite;import org.eclipse.swt.widgets.Control;import org.eclipse.swt.widgets.Event;import org.eclipse.swt.widgets.Label;import org.eclipse.swt.widgets.Listener;import org.eclipse.swt.widgets.Shell;import org.eclipse.swt.widgets.Table;import org.eclipse.swt.widgets.TableColumn;import org.eclipse.swt.widgets.TableItem;import org.eclipse.swt.widgets.Text;public class DatepickerDialog extends Dialog {private Text date;private Table table;private TableItem selectedTableItem;private String[] months = { "一月", "二月", "三月", "四月", "五月", "六月", "七月", "八月", "九月", "十月", "十一月", "十二月" };private int[] daysOfMonth = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };private String[] days = { "日", "一", "二", "三", "四", "五", "六" };private int year;private int month;private int day;protected DatepickerDialog(Shell parentShell) {super(parentShell);}public DatepickerDialog(Shell shell, Text date) {this(shell);this.date = date;init();}private void init() {String dateStr = date.getText();if (Pattern.matches("^\\d{4}-\\d{1,2}-\\d{1,2}$", dateStr)) {String[] str = dateStr.split("-");year = Integer.parseInt(str[0]);month = Integer.parseInt(str[1]) - 1;day = Integer.parseInt(str[2]);} else {year = Calendar.getInstance().get(Calendar.YEAR);month = Calendar.getInstance().get(Calendar.MONTH);day = Calendar.getInstance().get(Calendar.DAY_OF_MONTH);}}@Overrideprotected Control createContents(Composite parent) {parent.setLayout(new GridLayout(1, false));createYearMonthComposite(parent);table = new Table(parent, SWT.SINGLE | SWT.FULL_SELECTION | SWT.BORDER_SOLID);table.setHeaderVisible(true);table.setLinesVisible(true);createColumns(); // Create the columnsfillDayCell();addTableListeners();return parent;}private void fillDayCell() {for (TableItem item : table.getItems()) {item.dispose();}Calendar calendar = Calendar.getInstance();calendar.set(year, month, 1);int dayOfWeek = calendar.get(Calendar.DAY_OF_WEEK);for (int i = 0, d = 0; i <= 5; i++) {TableItem item = new TableItem(table, SWT.NONE);for (int j = 0, n = table.getColumnCount(); j < n; j++) {if ((d == 0 && j < (dayOfWeek - 1)) || d >= daysOfMonth[month]) {continue;}item.setText(j, (++d + ""));if (d == day) { // 今天Color blue = getShell().getDisplay().getSystemColor(SWT.COLOR_BLUE);item.setForeground(j, blue);} else if (j == 0 || j == n - 1) { // 周末Color red = getShell().getDisplay().getSystemColor(SWT.COLOR_RED);item.setForeground(j, red);}}}}private void createYearMonthComposite(Composite parent) {Composite composite = new Composite(parent, SWT.NONE);GridLayout gl = new GridLayout(4, false);gl.horizontalSpacing = 15;composite.setLayout(gl);// 月份final Combo monthCombo = new Combo(composite, SWT.DROP_DOWN | SWT.READ_ONLY);monthCombo.setItems(months);monthCombo.select(month);monthCombo.addSelectionListener(new SelectionAdapter() {public void widgetSelected(SelectionEvent e) {month = monthCombo.getSelectionIndex();fillDayCell();}});// 年final Text yearText = new Text(composite, SWT.BORDER);yearText.setText("" + year);handleLeapYearCondition();Label plus = new Label(composite, SWT.NONE);plus.setText(" + ");plus.addMouseListener(new MouseAdapter() {public void mouseDown(MouseEvent e) {yearText.setText(++year + "");handleLeapYearCondition();fillDayCell();}});Label minus = new Label(composite, SWT.NONE);minus.setText(" - ");minus.addMouseListener(new MouseAdapter() {public void mouseDown(MouseEvent e) {yearText.setText(--year + "");handleLeapYearCondition();fillDayCell();}});}private void handleLeapYearCondition() {if (isLeapYear()) {daysOfMonth[1] = 29;} else {daysOfMonth[1] = 28;}}private void addTableListeners() {// 鼠标悬停时给选中单元格加黄色背景table.addListener(SWT.MouseHover, new Listener() {@Overridepublic void handleEvent(Event event) {Point pt = new Point(event.x, event.y);selectedTableItem = table.getItem(pt);if (null == selectedTableItem) {return;}int column = getSelectedColumn(pt);String text = selectedTableItem.getText(column);if (null == text || text.trim().equals("")) {return;}Color yellow = getShell().getDisplay().getSystemColor(SWT.COLOR_YELLOW);selectedTableItem.setBackground(column, yellow);}});// 鼠标移动时给选中单元格加白色背景table.addListener(SWT.MouseMove, new Listener() {@Overridepublic void handleEvent(Event event) {Point pt = new Point(event.x, event.y);selectedTableItem = table.getItem(pt);if (null == selectedTableItem) {return;}Color white = getShell().getDisplay().getSystemColor(SWT.COLOR_WHITE);selectedTableItem.setBackground(getSelectedColumn(pt), white);}});// 鼠标进入时返回选中的日期字符串table.addListener(SWT.MouseDown, new Listener() {@Overridepublic void handleEvent(Event event) {Point pt = new Point(event.x, event.y);selectedTableItem = table.getItem(pt);if (null == selectedTableItem) {return;}String day = selectedTableItem.getText(getSelectedColumn(pt));date.setText(year + "-" + (month + 1) + "-" + day);setReturnCode(OK);close();}});}private boolean isLeapYear() {return ((year % 4 == 0 && year % 100 != 0) || (year % 400 == 0));}private int getSelectedColumn(Point pt) {int column = 0;for (int i = 0, n = table.getColumnCount(); i < n; i++) {Rectangle rect = selectedTableItem.getBounds(i);if (rect.contains(pt)) {column = i;break;}}return column;}private TableColumn[] createColumns() {TableColumn[] columns = new TableColumn[days.length];for (int i = 0, n = columns.length; i < n; i++) {columns[i] = new TableColumn(table, SWT.RIGHT);// This text will appear in the column headercolumns[i].setText(days[i]);columns[i].pack();}return columns;}}

效果图如下：


1 楼 tangweicong 2012-03-04 楼主，我想做个table的行鼠标悬停背景颜色改变的效果，运行了你的代码，那效果太烂了啊！！给我出出主意吧 2 楼 cutesunshineriver 2012-03-05 tangweicong 写道楼主，我想做个table的行鼠标悬停背景颜色改变的效果，运行了你的代码，那效果太烂了啊！！给我出出主意吧

SWT本身是有提供日期小部件的，是org.eclipse.swt.widgets.DateTime这个类。使用示例语法如下：DateTime date = new DateTime(composite, SWT.CALENDAR)。 3 楼 tangweicong 2012-03-06 cutesunshineriver 写道tangweicong 写道楼主，我想做个table的行鼠标悬停背景颜色改变的效果，运行了你的代码，那效果太烂了啊！！给我出出主意吧

SWT本身是有提供日期小部件的，是org.eclipse.swt.widgets.DateTime这个类。使用示例语法如下：DateTime date = new DateTime(composite, SWT.CALENDAR)。
我不是想做日期控件，我只是想做一个展示数据的table，要求它的行有网页那样的鼠标悬停效果