1843a74d16
- Changed the text of the clear button from "🗑️ 清空" to "🗑 清空" for improved visual consistency.
644 lines
22 KiB
Python
644 lines
22 KiB
Python
"""
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聊天视图组件
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处理普通对话的 UI 展示 - 支持流式消息、加载动画和 Markdown 渲染
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"""
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import tkinter as tk
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from tkinter import scrolledtext
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from typing import Callable, Optional, List, Tuple
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import re
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import webbrowser
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class MarkdownRenderer:
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"""Markdown 渲染器 - 将 Markdown 文本渲染到 Text 组件"""
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# URL 正则表达式
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URL_PATTERN = re.compile(
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r'https?://[^\s<>\[\]()（）\u4e00-\u9fff]+'
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)
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# Markdown 链接模式 [text](url)
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MD_LINK_PATTERN = re.compile(r'\[([^\]]+)\]\(([^)]+)\)')
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def __init__(self, text_widget: tk.Text):
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self.text_widget = text_widget
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self._link_count = 0
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self._configure_tags()
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def _configure_tags(self):
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"""配置 Markdown 样式标签"""
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# 标题样式
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self.text_widget.tag_configure('md_h1', font=('Microsoft YaHei UI', 16, 'bold'), foreground='#4fc3f7')
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self.text_widget.tag_configure('md_h2', font=('Microsoft YaHei UI', 14, 'bold'), foreground='#4fc3f7')
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self.text_widget.tag_configure('md_h3', font=('Microsoft YaHei UI', 12, 'bold'), foreground='#4fc3f7')
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# 粗体和斜体
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self.text_widget.tag_configure('md_bold', font=('Microsoft YaHei UI', 11, 'bold'))
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self.text_widget.tag_configure('md_italic', font=('Microsoft YaHei UI', 11, 'italic'))
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# 代码样式
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self.text_widget.tag_configure('md_code', font=('Consolas', 10), background='#3c3c3c', foreground='#ce9178')
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self.text_widget.tag_configure('md_code_block', font=('Consolas', 10), background='#1e1e1e', foreground='#d4d4d4')
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# 列表样式
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self.text_widget.tag_configure('md_list', foreground='#d4d4d4', lmargin1=20, lmargin2=35)
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self.text_widget.tag_configure('md_list_bullet', foreground='#ffd54f')
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# 链接样式
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self.text_widget.tag_configure('md_link', foreground='#64b5f6', underline=True)
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# 引用样式
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self.text_widget.tag_configure('md_quote', foreground='#9e9e9e', lmargin1=20, lmargin2=20, font=('Microsoft YaHei UI', 11, 'italic'))
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def render(self, text: str, base_tag: str = 'assistant') -> None:
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"""
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渲染 Markdown 文本
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Args:
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text: Markdown 文本
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base_tag: 基础样式标签
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"""
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lines = text.split('\n')
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in_code_block = False
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code_block_content = []
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for i, line in enumerate(lines):
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# 代码块处理
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if line.strip().startswith('```'):
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if in_code_block:
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# 结束代码块
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self._insert_code_block('\n'.join(code_block_content))
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code_block_content = []
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in_code_block = False
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else:
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# 开始代码块
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in_code_block = True
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continue
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if in_code_block:
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code_block_content.append(line)
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continue
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# 普通行处理
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self._render_line(line, base_tag)
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# 添加换行（除了最后一行）
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if i < len(lines) - 1:
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self.text_widget.insert(tk.END, '\n')
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def _render_line(self, line: str, base_tag: str) -> None:
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"""渲染单行"""
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stripped = line.strip()
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# 空行
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if not stripped:
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return
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# 标题
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if stripped.startswith('### '):
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self.text_widget.insert(tk.END, stripped[4:], 'md_h3')
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return
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elif stripped.startswith('## '):
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self.text_widget.insert(tk.END, stripped[3:], 'md_h2')
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return
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elif stripped.startswith('# '):
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self.text_widget.insert(tk.END, stripped[2:], 'md_h1')
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return
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# 引用
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if stripped.startswith('> '):
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self.text_widget.insert(tk.END, stripped[2:], 'md_quote')
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return
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# 无序列表
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if stripped.startswith('- ') or stripped.startswith('* '):
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self.text_widget.insert(tk.END, ' • ', 'md_list_bullet')
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self._render_inline(stripped[2:], base_tag, 'md_list')
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return
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# 有序列表
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list_match = re.match(r'^(\d+)\.\s+(.+)$', stripped)
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if list_match:
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num = list_match.group(1)
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content = list_match.group(2)
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self.text_widget.insert(tk.END, f' {num}. ', 'md_list_bullet')
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self._render_inline(content, base_tag, 'md_list')
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return
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# 普通段落
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self._render_inline(line, base_tag)
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def _render_inline(self, text: str, base_tag: str, extra_tag: str = None) -> None:
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"""渲染行内元素（粗体、斜体、代码、链接）"""
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tags = (base_tag, extra_tag) if extra_tag else (base_tag,)
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# 先处理 Markdown 链接 [text](url)
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last_end = 0
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for match in self.MD_LINK_PATTERN.finditer(text):
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# 插入链接前的文本
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if match.start() > last_end:
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self._render_inline_formatting(text[last_end:match.start()], tags)
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# 插入链接
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link_text = match.group(1)
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link_url = match.group(2)
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self._insert_link(link_text, link_url)
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last_end = match.end()
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# 处理剩余文本
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if last_end < len(text):
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remaining = text[last_end:]
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self._render_inline_formatting(remaining, tags)
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def _render_inline_formatting(self, text: str, tags: tuple) -> None:
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"""处理行内格式（粗体、斜体、代码、纯URL）"""
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# 处理粗体 **text**
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parts = re.split(r'(\*\*[^*]+\*\*)', text)
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for part in parts:
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if part.startswith('**') and part.endswith('**'):
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self.text_widget.insert(tk.END, part[2:-2], tags + ('md_bold',))
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else:
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# 处理斜体 *text*
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sub_parts = re.split(r'(\*[^*]+\*)', part)
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for sub_part in sub_parts:
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if sub_part.startswith('*') and sub_part.endswith('*') and len(sub_part) > 2:
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self.text_widget.insert(tk.END, sub_part[1:-1], tags + ('md_italic',))
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else:
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# 处理行内代码 `code`
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code_parts = re.split(r'(`[^`]+`)', sub_part)
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for code_part in code_parts:
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if code_part.startswith('`') and code_part.endswith('`'):
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self.text_widget.insert(tk.END, code_part[1:-1], ('md_code',))
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else:
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# 处理纯 URL
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self._render_urls(code_part, tags)
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def _render_urls(self, text: str, tags: tuple) -> None:
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"""渲染纯 URL 链接"""
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last_end = 0
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for match in self.URL_PATTERN.finditer(text):
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# 插入 URL 前的文本
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if match.start() > last_end:
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self.text_widget.insert(tk.END, text[last_end:match.start()], tags)
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# 插入 URL 链接
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url = match.group(0)
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# 清理 URL 末尾的标点
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while url and url[-1] in '.,;:!?。，；：！？':
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url = url[:-1]
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self._insert_link(url, url)
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# 如果清理了标点，插入标点
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original_url = match.group(0)
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if len(original_url) > len(url):
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self.text_widget.insert(tk.END, original_url[len(url):], tags)
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last_end = match.end()
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# 插入剩余文本
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if last_end < len(text):
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self.text_widget.insert(tk.END, text[last_end:], tags)
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def _insert_link(self, text: str, url: str) -> None:
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"""插入可点击的链接"""
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tag_name = f'link_{self._link_count}'
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self._link_count += 1
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self.text_widget.tag_configure(tag_name, foreground='#64b5f6', underline=True)
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# 绑定点击事件 - 使用 ButtonRelease 而不是 Button-1，更可靠
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def on_click(event, u=url):
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self._open_url(u)
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return "break" # 阻止事件继续传播
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self.text_widget.tag_bind(tag_name, '<ButtonRelease-1>', on_click)
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self.text_widget.tag_bind(tag_name, '<Enter>', lambda e: self._set_cursor('hand2'))
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self.text_widget.tag_bind(tag_name, '<Leave>', lambda e: self._set_cursor(''))
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self.text_widget.insert(tk.END, text, (tag_name, 'md_link'))
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def _set_cursor(self, cursor: str) -> None:
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"""设置鼠标光标"""
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try:
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self.text_widget.config(cursor=cursor)
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except:
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pass
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def _insert_code_block(self, code: str) -> None:
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"""插入代码块"""
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self.text_widget.insert(tk.END, '\n')
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self.text_widget.insert(tk.END, code, 'md_code_block')
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self.text_widget.insert(tk.END, '\n')
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def _open_url(self, url: str) -> None:
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"""打开 URL"""
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try:
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webbrowser.open(url)
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except Exception as e:
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print(f"Failed to open URL: {url}, error: {e}")
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class LoadingIndicator:
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"""加载动画指示器"""
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FRAMES = ["⠋", "⠙", "⠹", "⠸", "⠼", "⠴", "⠦", "⠧", "⠇", "⠏"]
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def __init__(self, parent: tk.Widget, text: str = "处理中"):
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self.parent = parent
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self.text = text
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self.frame_index = 0
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self.running = False
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self.after_id = None
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# 创建标签
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self.label = tk.Label(
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parent,
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text="",
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font=('Microsoft YaHei UI', 10),
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fg='#ffd54f',
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bg='#1e1e1e'
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)
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def start(self, text: str = None):
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"""开始动画"""
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if text:
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self.text = text
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self.running = True
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self.label.pack(pady=5)
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self._animate()
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def stop(self):
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"""停止动画"""
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self.running = False
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if self.after_id:
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self.parent.after_cancel(self.after_id)
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self.after_id = None
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self.label.pack_forget()
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def update_text(self, text: str):
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"""更新提示文字"""
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self.text = text
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def _animate(self):
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"""动画帧更新"""
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if not self.running:
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return
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frame = self.FRAMES[self.frame_index]
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self.label.config(text=f"{frame} {self.text}...")
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self.frame_index = (self.frame_index + 1) % len(self.FRAMES)
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self.after_id = self.parent.after(100, self._animate)
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class ChatView:
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"""
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聊天视图
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包含：
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- 消息显示区域（支持 Markdown 渲染）
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- 输入框
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- 发送按钮
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- 流式消息支持
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"""
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def __init__(
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self,
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parent: tk.Widget,
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on_send: Callable[[str], None],
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on_show_history: Optional[Callable[[], None]] = None,
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on_show_settings: Optional[Callable[[], None]] = None
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):
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"""
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初始化聊天视图
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Args:
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parent: 父容器
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on_send: 发送消息回调函数
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on_show_history: 显示历史记录回调函数
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on_show_settings: 显示设置页面回调函数
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"""
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self.parent = parent
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self.on_send = on_send
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self.on_show_history = on_show_history
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self.on_show_settings = on_show_settings
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# 流式消息状态
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self._stream_active = False
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self._stream_tag = None
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self._stream_buffer = [] # 用于缓存流式内容，最后渲染 Markdown
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# 加载指示器
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self.loading: Optional[LoadingIndicator] = None
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# Markdown 渲染器
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self.md_renderer: Optional[MarkdownRenderer] = None
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self._create_widgets()
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def _create_widgets(self):
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"""创建 UI 组件"""
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# 主框架
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self.frame = tk.Frame(self.parent, bg='#1e1e1e')
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self.frame.pack(fill=tk.BOTH, expand=True, padx=10, pady=10)
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# 标题栏（包含标题和历史按钮）
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title_frame = tk.Frame(self.frame, bg='#1e1e1e')
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title_frame.pack(fill=tk.X, pady=(0, 10))
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# 标题
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title_label = tk.Label(
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title_frame,
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text="LocalAgent - 本地 AI 助手",
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font=('Microsoft YaHei UI', 16, 'bold'),
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fg='#61dafb',
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bg='#1e1e1e'
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)
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title_label.pack(side=tk.LEFT, expand=True)
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# 按钮容器（右侧）
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btn_container = tk.Frame(title_frame, bg='#1e1e1e')
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btn_container.pack(side=tk.RIGHT)
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# 清空对话按钮
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self.clear_btn = tk.Button(
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btn_container,
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text="🗑 清空",
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font=('Microsoft YaHei UI', 10),
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bg='#424242',
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fg='#ef9a9a',
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activebackground='#616161',
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activeforeground='#ef9a9a',
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relief=tk.FLAT,
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padx=10,
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pady=3,
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cursor='hand2',
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command=self._on_clear_chat
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)
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self.clear_btn.pack(side=tk.RIGHT, padx=(5, 0))
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# 设置按钮
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if self.on_show_settings:
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self.settings_btn = tk.Button(
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btn_container,
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text="⚙️ 设置",
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font=('Microsoft YaHei UI', 10),
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bg='#424242',
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fg='#90caf9',
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activebackground='#616161',
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activeforeground='#90caf9',
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relief=tk.FLAT,
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padx=10,
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pady=3,
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cursor='hand2',
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command=self.on_show_settings
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)
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self.settings_btn.pack(side=tk.RIGHT, padx=(5, 0))
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# 历史记录按钮
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if self.on_show_history:
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self.history_btn = tk.Button(
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btn_container,
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text="📜 历史",
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font=('Microsoft YaHei UI', 10),
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bg='#424242',
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fg='#ce93d8',
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activebackground='#616161',
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activeforeground='#ce93d8',
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relief=tk.FLAT,
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padx=10,
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pady=3,
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cursor='hand2',
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command=self.on_show_history
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)
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self.history_btn.pack(side=tk.RIGHT)
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# 消息显示区域
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self.message_area = scrolledtext.ScrolledText(
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self.frame,
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wrap=tk.WORD,
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font=('Microsoft YaHei UI', 11),
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bg='#2d2d2d',
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fg='#d4d4d4',
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insertbackground='white',
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relief=tk.FLAT,
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padx=10,
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pady=10,
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cursor='arrow'
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)
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self.message_area.pack(fill=tk.BOTH, expand=True, pady=(0, 10))
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# 禁止编辑但允许选择和点击链接
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self.message_area.bind('<Key>', lambda e: 'break') # 禁止键盘输入
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# 允许鼠标操作（选择文本、点击链接）
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# 配置消息标签样式
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self.message_area.tag_configure('user', foreground='#4fc3f7', font=('Microsoft YaHei UI', 11, 'bold'))
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self.message_area.tag_configure('assistant', foreground='#81c784', font=('Microsoft YaHei UI', 11))
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self.message_area.tag_configure('system', foreground='#ffb74d', font=('Microsoft YaHei UI', 10, 'italic'))
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self.message_area.tag_configure('error', foreground='#ef5350', font=('Microsoft YaHei UI', 10))
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self.message_area.tag_configure('streaming', foreground='#81c784', font=('Microsoft YaHei UI', 11))
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# 初始化 Markdown 渲染器
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self.md_renderer = MarkdownRenderer(self.message_area)
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# 输入区域框架
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input_frame = tk.Frame(self.frame, bg='#1e1e1e')
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input_frame.pack(fill=tk.X)
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# 输入框
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self.input_entry = tk.Entry(
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input_frame,
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font=('Microsoft YaHei UI', 12),
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bg='#3c3c3c',
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fg='#ffffff',
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insertbackground='white',
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relief=tk.FLAT
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)
|
||
self.input_entry.pack(side=tk.LEFT, fill=tk.X, expand=True, ipady=8, padx=(0, 10))
|
||
self.input_entry.bind('<Return>', self._on_enter_pressed)
|
||
|
||
# 发送按钮
|
||
self.send_button = tk.Button(
|
||
input_frame,
|
||
text="发送",
|
||
font=('Microsoft YaHei UI', 11, 'bold'),
|
||
bg='#0078d4',
|
||
fg='white',
|
||
activebackground='#106ebe',
|
||
activeforeground='white',
|
||
relief=tk.FLAT,
|
||
padx=20,
|
||
pady=5,
|
||
cursor='hand2',
|
||
command=self._on_send_clicked
|
||
)
|
||
self.send_button.pack(side=tk.RIGHT)
|
||
|
||
# 显示欢迎消息
|
||
welcome_msg = (
|
||
"欢迎使用 LocalAgent!\n"
|
||
"- 输入问题进行对话\n"
|
||
"- 输入文件处理需求（如\"复制文件\"、\"整理图片\"）将触发执行模式"
|
||
)
|
||
self.add_message(welcome_msg, 'system')
|
||
|
||
# 创建加载指示器（放在消息区域下方）
|
||
self.loading = LoadingIndicator(self.frame)
|
||
|
||
def _on_enter_pressed(self, event):
|
||
"""回车键处理"""
|
||
self._on_send_clicked()
|
||
|
||
def _on_send_clicked(self):
|
||
"""发送按钮点击处理"""
|
||
text = self.input_entry.get().strip()
|
||
if text:
|
||
self.input_entry.delete(0, tk.END)
|
||
self.on_send(text)
|
||
|
||
def _on_clear_chat(self):
|
||
"""清空对话"""
|
||
from tkinter import messagebox
|
||
if messagebox.askyesno("确认", "确定要清空当前对话吗？\n（这将同时清空对话上下文）"):
|
||
self.clear_messages()
|
||
# 通知 agent 清空上下文（通过回调）
|
||
if hasattr(self, 'on_clear_context') and self.on_clear_context:
|
||
self.on_clear_context()
|
||
# 重新显示欢迎消息
|
||
welcome_msg = (
|
||
"欢迎使用 LocalAgent!\n"
|
||
"- 输入问题进行对话\n"
|
||
"- 输入文件处理需求（如\"复制文件\"、\"整理图片\"）将触发执行模式"
|
||
)
|
||
self.add_message(welcome_msg, 'system')
|
||
|
||
def set_clear_context_callback(self, callback: Callable[[], None]):
|
||
"""设置清空上下文的回调"""
|
||
self.on_clear_context = callback
|
||
|
||
def add_message(self, message: str, tag: str = 'assistant', use_markdown: bool = True):
|
||
"""
|
||
添加消息到显示区域
|
||
|
||
Args:
|
||
message: 消息内容
|
||
tag: 消息类型 (user/assistant/system/error)
|
||
use_markdown: 是否使用 Markdown 渲染（assistant 消息默认启用）
|
||
"""
|
||
# 添加前缀
|
||
prefix_map = {
|
||
'user': '\n[你] ',
|
||
'assistant': '\n[助手] ',
|
||
'system': '\n[系统] ',
|
||
'error': '\n[错误] '
|
||
}
|
||
prefix = prefix_map.get(tag, '\n')
|
||
|
||
self.message_area.insert(tk.END, prefix, tag)
|
||
|
||
# 根据消息类型决定是否使用 Markdown 渲染
|
||
if use_markdown and tag == 'assistant' and self.md_renderer:
|
||
self.md_renderer.render(message, tag)
|
||
else:
|
||
self.message_area.insert(tk.END, message, tag)
|
||
|
||
self.message_area.insert(tk.END, '\n')
|
||
self.message_area.see(tk.END)
|
||
|
||
def start_stream_message(self, tag: str = 'assistant'):
|
||
"""
|
||
开始流式消息
|
||
|
||
Args:
|
||
tag: 消息类型
|
||
"""
|
||
self._stream_active = True
|
||
self._stream_tag = tag
|
||
self._stream_buffer = []
|
||
|
||
# 添加前缀
|
||
prefix_map = {
|
||
'user': '\n[你] ',
|
||
'assistant': '\n[助手] ',
|
||
'system': '\n[系统] ',
|
||
'error': '\n[错误] '
|
||
}
|
||
prefix = prefix_map.get(tag, '\n')
|
||
|
||
self.message_area.insert(tk.END, prefix, tag)
|
||
# 使用 mark 来标记内容开始位置，比索引更可靠
|
||
self.message_area.mark_set("stream_start", tk.END + "-1c")
|
||
self.message_area.mark_gravity("stream_start", tk.LEFT)
|
||
self.message_area.see(tk.END)
|
||
|
||
def append_stream_chunk(self, chunk: str):
|
||
"""
|
||
追加流式消息片段
|
||
|
||
Args:
|
||
chunk: 消息片段
|
||
"""
|
||
if not self._stream_active:
|
||
return
|
||
|
||
self._stream_buffer.append(chunk)
|
||
self.message_area.insert(tk.END, chunk, self._stream_tag)
|
||
self.message_area.see(tk.END)
|
||
# 强制更新 UI
|
||
self.message_area.update_idletasks()
|
||
|
||
def end_stream_message(self):
|
||
"""结束流式消息，重新渲染为 Markdown"""
|
||
if self._stream_active:
|
||
# 获取完整的流式内容
|
||
full_content = ''.join(self._stream_buffer)
|
||
|
||
# 如果是 assistant 消息且有内容，重新渲染为 Markdown
|
||
if self._stream_tag == 'assistant' and self.md_renderer and full_content.strip():
|
||
# 删除原来的纯文本内容（从 mark 位置到末尾）
|
||
try:
|
||
self.message_area.delete("stream_start", tk.END)
|
||
except tk.TclError:
|
||
pass
|
||
# 重新渲染为 Markdown
|
||
self.md_renderer.render(full_content, self._stream_tag)
|
||
|
||
self.message_area.insert(tk.END, '\n')
|
||
self.message_area.see(tk.END)
|
||
|
||
# 重置状态
|
||
self._stream_active = False
|
||
self._stream_tag = None
|
||
self._stream_buffer = []
|
||
|
||
def clear_messages(self):
|
||
"""清空消息区域"""
|
||
self.message_area.delete(1.0, tk.END)
|
||
|
||
def set_input_enabled(self, enabled: bool):
|
||
"""设置输入区域是否可用"""
|
||
state = tk.NORMAL if enabled else tk.DISABLED
|
||
self.input_entry.config(state=state)
|
||
self.send_button.config(state=state)
|
||
|
||
def show_loading(self, text: str = "处理中"):
|
||
"""显示加载动画"""
|
||
if self.loading:
|
||
self.loading.start(text)
|
||
|
||
def hide_loading(self):
|
||
"""隐藏加载动画"""
|
||
if self.loading:
|
||
self.loading.stop()
|
||
|
||
def update_loading_text(self, text: str):
|
||
"""更新加载提示文字"""
|
||
if self.loading:
|
||
self.loading.update_text(text)
|
||
|
||
def get_frame(self) -> tk.Frame:
|
||
"""获取主框架"""
|
||
return self.frame
|