chore: import original project baseline
Import the pre-repair source tree as the history baseline. Runtime data (data/), virtualenvs, bytecode caches and logs are gitignored so local secrets and user state stay out of the repo.
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# chat_bridge.py
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import json
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from PyQt6.QtCore import QObject, pyqtSlot, pyqtSignal
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class ChatBridge(QObject):
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# 信号定义
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regenerate_clicked = pyqtSignal(str) # 携带需要重新回答的助手消息ID
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branch_switch_clicked = pyqtSignal(str, int) # 分支切换信号 (msg_id, direction: -1 为上一条, 1 为下一条)
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delete_message_requested = pyqtSignal(str) # 删除消息信号 (msg_id)
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attachment_clicked = pyqtSignal(str)
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scroll_changed = pyqtSignal(float, float, float) # 页面 scrollY / scrollHeight / innerHeight
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def __init__(self, page, channel, js_runner=None):
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"""
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:param page: QWebEnginePage 实例（QtWebEngine 路径）
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:param channel: QWebChannel 实例（QtWebEngine 路径）
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:param js_runner: 可选 JS 执行函数（WebView2 路径：script -> None）
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"""
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super().__init__()
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self.page = page
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self._js_runner = js_runner
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if channel is not None:
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# 将自身注册到 channel 中，前端可通过 bridge 对象调用
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channel.registerObject("bridge", self)
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print("ChatBridge被初始化")
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def run_js(self, script: str):
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if self._js_runner is not None:
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self._js_runner(script)
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elif self.page is not None:
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self.page.runJavaScript(script)
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else:
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print("[ChatBridge] run_js: 无可用执行通道")
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# ---------- 消息构造 (Python -> JS) ----------
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def create_message(self, msg_id: str, role: str, text: str = "", sender_name: str = "", branch_info: dict = None):
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"""
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在前端创建一条消息容器
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:param branch_info: 格式如 {"current": 0, "total": 2}，若为 None 则不显示分支切换器
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"""
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safe_text = json.dumps(text)
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safe_name = json.dumps(sender_name)
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safe_branch = json.dumps(branch_info) if branch_info else "null"
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self.run_js(f"createMessage('{msg_id}', '{role}', {safe_text}, {safe_name}, {safe_branch});")
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def create_long_message(self, msg_id: str, role: str, text: str, sender_name: str = ""):
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safe_text = json.dumps(text)
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safe_name = json.dumps(sender_name)
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size_kb = round(len(text.encode('utf-8')) / 1024, 2)
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self.run_js(f"createLongMessage('{msg_id}', '{role}', {safe_text}, {safe_name}, {size_kb});")
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def create_user_message_with_attachments(self, msg_id: str, text: str, attachments: list):
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safe_text = json.dumps(text)
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safe_attachments = json.dumps(attachments)
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self.run_js(f"createUserMessageWithAttachments('{msg_id}', {safe_text}, {safe_attachments});")
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# ---------- 流式输出 (Python -> JS) ----------
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def append_token(self, msg_id: str, token: str):
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safe_token = json.dumps(token)
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self.run_js(f"appendToken('{msg_id}', {safe_token});")
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def append_reasoning(self, msg_id: str, token: str):
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safe_token = json.dumps(token)
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self.run_js(f"appendReasoning('{msg_id}', {safe_token});")
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def finish_message(self, msg_id: str):
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self.run_js(f"finishMessage('{msg_id}');")
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# ---------- 工具执行事件 (Python -> JS) —— pi tool_execution_* ----------
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def tool_execution_started(self, msg_id: str, call_id: str, name: str, args: str):
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"""工具开始执行：前端在时间线当前位置插入 chip（带 call_id 对号入座）"""
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safe_call = json.dumps(call_id)
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safe_name = json.dumps(name)
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safe_args = json.dumps(args)
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self.run_js(f"toolExecutionStarted('{msg_id}', {safe_call}, {safe_name}, {safe_args});")
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def tool_execution_updated(self, msg_id: str, call_id: str, text: str):
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"""工具执行中的增量输出（bash stdout 等）"""
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safe_call = json.dumps(call_id)
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safe_text = json.dumps(text)
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self.run_js(f"toolExecutionUpdated('{msg_id}', {safe_call}, {safe_text});")
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def tool_execution_timed(self, msg_id: str, call_id: str,
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elapsed: int, timeout: int):
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"""🆕 bash 运行中每秒读秒：气泡摘要行刷新 N/Ts"""
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safe_call = json.dumps(call_id)
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self.run_js(f"toolExecutionTimed('{msg_id}', {safe_call}, "
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f"{int(elapsed)}, {int(timeout)});")
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def tool_execution_finished(self, msg_id: str, call_id: str, name: str, ok: bool, text: str):
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"""工具执行结束：chip 按 call_id 标记成功/失败并显示结果摘要"""
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safe_call = json.dumps(call_id)
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safe_name = json.dumps(name)
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safe_text = json.dumps(text)
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self.run_js(f"toolExecutionFinished('{msg_id}', {safe_call}, {safe_name}, {str(ok).lower()}, {safe_text});")
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# ---------- 时间线 (Python -> JS) ----------
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def restore_streaming_timeline(self, msg_id: str, timeline_json: str):
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"""切回进行中的会话：按时间线 JSON 恢复 思考/文本/工具 块（续流）"""
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safe_json = json.dumps(timeline_json)
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self.run_js(f"restoreStreamingTimeline('{msg_id}', {safe_json});")
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def render_timeline_history(self, msg_id: str, timeline_json: str):
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"""历史消息：按时间线 JSON 静态渲染 思考/文本/工具 块"""
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safe_json = json.dumps(timeline_json)
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self.run_js(f"renderTimelineHistory('{msg_id}', {safe_json});")
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# ---------- 压缩可视化 (Python -> JS) ----------
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def compaction_started(self, msg_id: str, path: str):
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"""压缩开始 → 当前消息时间线内显示「上下文压缩」思考气泡（与深度思考同款）"""
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safe_id = json.dumps(msg_id or "")
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safe_path = json.dumps(path or "")
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self.run_js(f"compactionStarted({safe_id}, {safe_path});")
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def compaction_finished(self, msg_id: str, payload: dict):
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"""压缩完成 → 同一气泡原地更新（前→后 token + 摘要全文）"""
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safe_id = json.dumps(msg_id or "")
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safe_payload = json.dumps(payload or {}, ensure_ascii=False)
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self.run_js(f"compactionFinished({safe_id}, {safe_payload});")
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# ---------- 系统提示 (Python -> JS) ----------
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def show_note(self, text: str):
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"""在聊天流中插入一条居中系统提示（如：已自动压缩上下文）"""
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safe_text = json.dumps(text)
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self.run_js(f"showSystemNote({safe_text});")
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# ---------- 错误与清理 (Python -> JS) ----------
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def show_error(self, msg_id: str, error_text: str):
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safe_text = json.dumps(error_text)
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self.run_js(f"showError('{msg_id}', {safe_text});")
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def clear_chat(self):
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self.run_js("clearChat();")
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def delete_message(self, msg_id: str):
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"""通知前端从 DOM 中移除特定消息"""
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self.run_js(f"deleteMessage('{msg_id}');")
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# ---------- 历史记录渲染 ----------
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def render_history_message(self, msg_id: str, role: str, content: str, reasoning: str = "", branch_info: dict = None):
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self.create_message(msg_id, role, content, branch_info=branch_info)
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if reasoning:
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safe_reasoning = json.dumps(reasoning)
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self.run_js(f"insertThinkBlock('{msg_id}', {safe_reasoning});")
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self.finish_message(msg_id)
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def show_welcome(self):
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self.run_js("showWelcome();")
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# ---------- 会话加载界面 (Python -> JS) ----------
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def show_loading(self):
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"""显示统一加载界面（图标 + 从左到右扫描条）"""
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self.run_js("showLoadingOverlay();")
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def hide_loading(self):
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"""隐藏加载界面（带渐变退场）"""
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self.run_js("hideLoadingOverlay();")
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# ---------- 交互 Slot (JS -> Python) ----------
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@pyqtSlot(str)
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def onRegenerateClicked(self, msg_id):
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"""前端点击“重新生成”按钮时触发"""
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print(f"Regenerate requested for: {msg_id}")
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self.regenerate_clicked.emit(msg_id)
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@pyqtSlot(str, int)
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def onBranchSwitch(self, msg_id, direction):
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"""前端点击分支切换箭头时触发"""
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print(f"Branch switch requested for: {msg_id}, direction: {direction}")
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self.branch_switch_clicked.emit(msg_id, direction)
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@pyqtSlot(str)
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def onDeleteMessageClicked(self, msg_id):
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"""接收 JS 发来的确认删除指令（🌟 已去重，原先定义了两次）"""
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print(f"Delete requested for: {msg_id}")
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self.delete_message_requested.emit(msg_id)
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@pyqtSlot(str)
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def onAttachmentClicked(self, meta_json_str):
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"""接收 JS 发来的附件点击事件"""
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self.attachment_clicked.emit(meta_json_str)
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@pyqtSlot(float, float, float)
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def onScrollChanged(self, y, content_h, client_h):
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"""接收前端上报的页面滚动信息，用于自定义滚动条位置/滑块长度镜像"""
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self.scroll_changed.emit(y, content_h, client_h)
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