java swing 文本域双击变为可编辑

java swing

 如何实现文本域双击变为可编辑呢?

给文本域添加鼠标事件监听程序即可:

resultTA1=new AssistPopupTextArea();
		resultTA1.setEditable(false);
		resultTA1.setLineWrap(true);
		resultTA1.setWrapStyleWord(true);
resultTA1.addMouseListener(new MouseAdapter() {
			@Override
			public void mouseClicked(MouseEvent e) {
				if (e.getClickCount() == 2) {
					if (!resultTA1.isEditable()) {
						resultTA1.setEditable(true);
						DialogUtil.focusSelectAllTF(resultTA1);
						resultTA1.requestFocus();
					}
				}
				super.mouseClicked(e);
			}

		});

按Esc 键变为只读(不可编辑)

/***
	 * 按Alt+Enter时,用户名文本框聚焦,<br>按Esc 文本框失去焦点,并变为不可编辑
	 * @param tf :密码输入框
	 */
	public static void addKeyListener22(final JTextComponent tf,final JTextComponent tf2){
		tf.addKeyListener(new KeyListener() {
			
			@Override
			public void keyTyped(KeyEvent e) {
			}
			
			@Override
			public void keyReleased(KeyEvent e) {
			}
			
			@Override
			public void keyPressed(KeyEvent e) {
				if ((e.getKeyCode() == KeyEvent.VK_ESCAPE)
						) {
//					System.out.println("esc");
					tf.setEditable(false);
				}else if ((e.getKeyCode() == KeyEvent.VK_ENTER)
						&& (((InputEvent) e )
								.isAltDown())) {
					if(!ValueWidget.isNullOrEmpty(tf2)){
						if (!tf2.isEditable()) {
							tf2.setEditable(true);
						}
						tf2.requestFocus();
						tf2.selectAll();
					}
				}
			}
		});
	}

调用:

DialogUtil.addKeyListener22(resultTA1);

 注意:

(1)e.getClickCount() == 2 表示双击,即短时间间隔之内连续点击两次;

(2)e.getKeyCode() == KeyEvent.VK_ESCAPE 表示按下Esc 键

参考:

http://hw1287789687.iteye.com/blog/2221256

http://hw1287789687.iteye.com/blog/2173977

http://hw1287789687.iteye.com/blog/2155557