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package client.view.main;
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import client.service.LocalData;
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import client.view.MainPage;
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import client.view.util.CircleCharIcon2;
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import client.view.util.DesignToken;
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import client.view.util.RoundedRectCharIcon;
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import javax.swing.*;
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import java.awt.*;
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import java.awt.event.MouseAdapter;
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import java.awt.event.MouseEvent;
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// 群聊列表项组件
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public class GroupListItem extends JPanel implements Comparable<String> {
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private int unread;
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private final String groupId;
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JLabel icon;
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JLabel badge;
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JPanel centerPanel;
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JLabel titleLabel;
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JPanel rightPanel; // 用于放置徽章
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/**
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* 构造函数
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*
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* @param groupId 群聊ID
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* @param title 群聊标题
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* @param unread 未读消息数量
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*/
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public GroupListItem(String groupId, String title, int unread) {
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this.groupId = groupId;
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this.unread = unread;
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// 设置布局管理器
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setLayout(new BorderLayout(10, 0));
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setBorder(BorderFactory.createEmptyBorder(8, 10, 8, 10));
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setMaximumSize(new Dimension(Integer.MAX_VALUE, 70));
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setPreferredSize(new Dimension(200, 70));
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// 左侧图标
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boolean isGroup = LocalData.get().getGroupData(groupId) != null;
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if (isGroup) {
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icon = new JLabel(new RoundedRectCharIcon(Color.decode(DesignToken.BUBBLE_COLOR_BLUE), Color.WHITE,
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title.substring(0, 1).toUpperCase(), 40));
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} else {
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icon = new JLabel(new CircleCharIcon2(Color.ORANGE, Color.WHITE,
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title.substring(0, 1).toUpperCase(), 40));
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}
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icon.setPreferredSize(new Dimension(40, 40));
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// 中间区域 - 群聊标题
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centerPanel = new JPanel(new GridLayout(1, 1));
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titleLabel = new JLabel(title);
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titleLabel.setFont(new Font(DesignToken.DEFAULT_FONT, Font.BOLD, 14));
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centerPanel.add(titleLabel);
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// 右侧区域 - 未读消息徽章
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rightPanel = new JPanel(new FlowLayout(FlowLayout.RIGHT, 0, 0));
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rightPanel.setOpaque(false);
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badge = new JLabel();
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badge.setForeground(Color.WHITE);
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badge.setBackground(Color.RED);
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badge.setOpaque(true);
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badge.setHorizontalAlignment(SwingConstants.CENTER);
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badge.setFont(new Font("Microsoft YaHei", Font.BOLD, 10));
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badge.setBorder(BorderFactory.createEmptyBorder(2, 6, 2, 6));
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badge.setPreferredSize(new Dimension(20, 20));
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updateBadge(); // 初始化徽章显示状态
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rightPanel.add(badge);
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// 组装
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this.add(icon, BorderLayout.WEST);
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this.add(centerPanel, BorderLayout.CENTER);
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this.add(rightPanel, BorderLayout.EAST);
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addMouseListener(new MouseAdapter() {
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@Override
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public void mouseClicked(MouseEvent e) {
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enterGroup();
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}
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@Override
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public void mouseEntered(MouseEvent e) {
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setBackground(new Color(240, 240, 240)); // 悬停效果
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}
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@Override
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public void mouseExited(MouseEvent e) {
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setBackground(UIManager.getColor("Panel.background")); // 恢复原背景
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}
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@Override
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public void mousePressed(MouseEvent e) {
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setBackground(new Color(220, 220, 220)); // 点击效果
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}
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@Override
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public void mouseReleased(MouseEvent e) {
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if (contains(e.getPoint())) {
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setBackground(new Color(240, 240, 240));
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} else {
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setBackground(UIManager.getColor("Panel.background"));
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}
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}
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});
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}
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/**
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* 更新徽章显示
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*/
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private void updateBadge() {
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if (unread > 0) {
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String badgeText = unread > 99 ? "99+" : String.valueOf(unread);
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badge.setText(badgeText);
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badge.setVisible(true);
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// 根据文本长度调整徽章大小
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FontMetrics fm = badge.getFontMetrics(badge.getFont());
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int width = fm.stringWidth(badgeText) + 12;
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badge.setPreferredSize(new Dimension(width, 20));
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} else {
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badge.setVisible(false);
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}
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}
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/**
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* 更新组件
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* 将组件上对应的信息修改。
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* newUnread 是加在原有的unread上的
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*/
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public void updateUI(String name, int newUnread) {
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titleLabel.setText(name);
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// 更新图标的首字母显示
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boolean isGroup = LocalData.get().getGroupData(groupId) != null;
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if (isGroup) {
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icon.setIcon(new RoundedRectCharIcon(Color.decode(DesignToken.BUBBLE_COLOR_BLUE), Color.WHITE,
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name.substring(0, 1).toUpperCase(), 40));
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} else {
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icon.setIcon(new CircleCharIcon2(Color.ORANGE, Color.WHITE,
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name.substring(0, 1).toUpperCase(), 40));
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}
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unread += newUnread;
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updateBadge();
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}
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/**
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* 点击事件
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* 当点击之后，使用UIUpdater来更新ContentView的UI，
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* 使得其加载新的群聊信息
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* 清空unread为0
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* UIUpdater在ContentView展示当前群聊信息的时候不会更新这个群聊的未读信息数量。
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*/
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public void enterGroup() {
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unread = 0;
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LocalData.get().setCurrentChatId(groupId);
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updateBadge(); // 更新徽章显示
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String name;
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if (LocalData.get().getFriends().containsKey(groupId)) {
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name = LocalData.get().getFriends().get(groupId);
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} else {
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name = LocalData.get().getGroupName(groupId);
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}
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updateUI(name, 0);
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MainPage.get().exchangeToChatRoom(groupId);
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if (LocalData.get().getGroupData(groupId) != null) {
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System.out.println(
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"进入群聊：" + groupId +
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"，人数：" + LocalData.get().getGroupData(groupId).getMemberCount() +
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", 信息数量: " + LocalData.get().getChatMsg(groupId).size());
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} else {
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System.out.println("进入私聊：" + groupId);
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}
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MainPage.get().revalidate(); // 重新计算布局
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MainPage.get().repaint();
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}
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/**
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* 获取未读消息数量
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*/
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public int getUnread() {
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return unread;
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}
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/**
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* 获取群组ID
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*/
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public String getGroupId() {
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return groupId;
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}
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/**
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* 实现Comparable接口，用于排序
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* 按照群组ID进行排序
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*
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* @param o 要比较的对象
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* @return 比较结果
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*/
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@Override
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public int compareTo(String o) {
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return this.groupId.compareTo(o);
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}
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}
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