remindutils.java

用JAVA开发的提醒精灵

package com.liming.remind.common;


import java.awt.Component;
import java.awt.Dimension;
import java.awt.Toolkit;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import javax.swing.SwingUtilities;
import javax.swing.UIManager;

import com.liming.remind.dto.Remind;


/**
 * Function : Remind Utils
 * 
 * @author Liming
 * @time Dec 17, 2008 8:40:48 PM
 * @version 1.0
 */
public class RemindUtils {

    /**
     * Function : Validate Time pattern
     * 
     * @param time
     * @return
     */
    public static boolean validateTimePattern(String time) {
        // Compile regular expression
        Pattern pattern = Pattern
                .compile("(([0-1][0-9])|([0-9])|([2][0-3])):(([0-5][0-9])|[0-9])");
        Matcher matcher = pattern.matcher(time);
        return matcher.matches();
    }

    /**
     * Function : Parse loose time pattern
     * 
     * @param time
     * @return
     */
    public static String changeToStrictPatter(String time) {
        int hour = Integer.parseInt(time.split(":")[0]);
        int minute = Integer.parseInt(time.split(":")[1]);

        String h = hour < 10 ? "0" + hour : hour + "";
        String m = minute < 10 ? "0" + minute : minute + "";

        return h + ":" + m;
    }

    /**
     * Function : Generate an id to a new remind
     * 
     * @param list
     * @return
     */
    public static int getMaxIdFromList(List<Remind> list) {
        int maxId = 1;
        if (list == null) {
            return maxId;
        }
        int temp;
        int listSize = list.size();
        for (int i = 0;i < listSize;i++) {
            temp = list.get(i).getId();
            maxId = maxId > temp ? maxId : temp;
        }
        return maxId + 1;
    }

    /**
     * Function : Set UI Face to the center of the windows
     * 
     * @param ui
     */
    public static void setUIMiddleOfTheWindow(Component ui) {
        Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
        Dimension size = ui.getSize();
        ui.setLocation((screenSize.width - size.width) / 2,
                (screenSize.height - size.height) / 2);
    }

    /**
     * Function : Get windows LookAndFeel
     * 
     * @param ui
     */
    public static void getWindowsLookAndFeel(Component ui) {
        try {
            UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
            SwingUtilities.updateComponentTreeUI(ui);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

}