在此帖子的底部显示了基于接受的答案的已编辑的正确代码。
我找到了一种方法(written by Andremoniy),可以捕获双击和三次单击而无需触发单击和双击。对于我的目的,它工作得很好。
我对其进行了修改,以便可以通过实现调整点击间隔。那也很好。
我的修改包括将其设置为abstract class
,定义了实现必须定义的5个abstract
方法(单次,两次,三次和“多次”点击以及点击间隔调整的方法)。
这是修改后的版本(println
语句具有指导意义):
public abstract class Click123 extends JPanel
{
public abstract void singleClick();
public abstract void doubleClick();
public abstract void tripleClick();
public abstract void manyClick();
public abstract int getFreq();
public Click123()
{
addMouseListener
(
new MouseAdapter()
{
Thread cp = null;
public void mouseClicked(MouseEvent e)
{
if (cp != null && cp.isAlive())
cp.interrupt();
if (e.getClickCount() == 1)
{
cp = new Thread(new ClickProcessor(new Callable<Void>() {
@Override public Void call() throws Exception {
singleClick();
return null;
}
}));
cp.start();
}
else if (e.getClickCount() == 2)
{
cp = new Thread(new ClickProcessor(new Callable<Void>() {
@Override public Void call() throws Exception {
doubleClick();
return null;
}
}));
cp.start();
}
else if (e.getClickCount() == 3)
{
cp = new Thread(new ClickProcessor(new Callable<Void>()
{
@Override public Void call() throws Exception {
tripleClick();
return null;
}
})
);
cp.start();
}
else manyClick();
} // mouseClicked
} // new MouseAdapter
); // add mouseListener
} // Click123
class ClickProcessor implements Runnable
{
Callable<Void> eventProcessor;
ClickProcessor(Callable<Void> eventProcessor)
{
this.eventProcessor = eventProcessor;
}
@Override public void run()
{
try
{
Thread.sleep(getFreq());
eventProcessor.call();
} catch (InterruptedException e) { System.out.println(e);}
catch (Exception e) { System.out.println(e);}
} // run
} // class ClickProcessor
} // class Click123
这是实施程序:
public class NewMain1 {
static int INITIAL_CLICK_FREQUENCY = ((Integer)Toolkit.getDefaultToolkit()
.getDesktopProperty("awt.multiClickInterval"));
public static int CLICK_FREQUENCY;
static JSpinner spinner = new JSpinner();
static final JLabel ch = new JLabel("Click here to test");
public static void main(String[] args) {
CLICK_FREQUENCY = INITIAL_CLICK_FREQUENCY;
spinner = new JSpinner();
spinner.setModel(new SpinnerNumberModel(CLICK_FREQUENCY, 200, 900, 50));
spinner.addChangeListener(new ChangeListener() {
@Override
public void stateChanged(ChangeEvent e) {
CLICK_FREQUENCY = (int) spinner.getValue();
}
});
Click123 frame = new Click123(){
public void singleClick(){
JOptionPane.showMessageDialog(null,"Single click at " + CLICK_FREQUENCY);
}
public void doubleClick(){
JOptionPane.showMessageDialog(null,"Double click at " + CLICK_FREQUENCY);
}
public void tripleClick(){
JOptionPane.showMessageDialog(null,"Triple click at " + CLICK_FREQUENCY);
}
public void manyClick(){
JOptionPane.showMessageDialog(null,"Many clicks at " + CLICK_FREQUENCY);
}
public int getFreq(){
return CLICK_FREQUENCY;
}
};
frame.setDefaultCloseOperation(DISPOSE_ON_CLOSE);
frame.setLayout(new FlowLayout());
frame.setSize(500, 300);
ch.setBorder(new EtchedBorder());
frame.add(ch);
frame.add(spinner);
frame.setVisible(true);
} // main
}
如最初所写,
Click123 extends JFrame
。我对其进行了修改(通过将顶行更改为extends JTextField
)以处理类型为JTextField
的网格。然后,我添加了一个按钮来动态更改点击间隔。所以现在我有了三个相同的代码(扩展类型除外)。我的问题是:如何修改
Click123
,以便可以不进行更改地使任何组件都知道单击,双击和三次单击?编辑-必要更改的摘要(对于我自己的应用程序,
abstract
方法需要传递MouseEvent
才能确定触发点击的组件):类定义:
public abstract class Click123<T extends Component>
{
public abstract void singleClick(MouseEvent e); // same for 3 others
...
public Click123(T target)
{
target.addMouseListener
(
new MouseAdapter() ...
} ...
}
添加
final
作为修饰符以便通过MouseEvent
: public void mouseClicked(final MouseEvent e)
通过
MouseEvent
: singleClick(e); // same for doubleClick and tripleClick and manyClick
接收
MouseEvent
以确定哪个组件触发了点击: public void doubleClick(MouseEvent e)
实现方式:
frame = new JPanel();
new Click123(frame) {
最佳答案
泛型是解决方案的一部分。只需执行以下操作:
使您的班级Click123<T extends Component>
使您的构造函数public Click123(T targetedComponent) {
呼叫targetedComponent.addMouseListener
而不是addMouseListener
创建一个JFrame
或JPanel
或其他任何东西,然后将其作为构造函数参数传递给您的new Click123
。然后在使用JFrame
的地方使用Click123
。