端到端新架构骨架:src/new 包入口 + BaseView 接口契约(dispatch_execute 沿父链上溯 run_single_step)
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src/new/core/base_view.py
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77
src/new/core/base_view.py
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#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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"""
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BaseView —— 模块化新页面的标准接口基类
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设计目标:
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1. 继承自 QWidget,保留 PyQt 控件的全部能力。
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2. 剥离对全局 main_window 的直接依赖——所有跨层通讯通过
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``dispatch_execute`` 沿 ``self.parent()`` 父链向上查找具备
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``run_single_step`` 方法的祖先容器完成。
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3. 声明一组可重写的生命周期空方法(init_ui / get_config /
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set_config / update_work_directory / update_from_config),
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子类按需覆盖,避免基类强制绑定具体 UI 形态。
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"""
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from PyQt5.QtWidgets import QWidget
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class BaseView(QWidget):
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"""所有新页面的标准基类"""
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def __init__(self, parent=None):
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super().__init__(parent)
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# 全局推送状态的本地缓存——主窗口通过 update_from_config 写入
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self.work_dir = None
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self.pipeline = None
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# 子类应重写 init_ui 以构建自身 UI
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self.init_ui()
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# ------------------------------------------------------------------
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# 生命周期空方法(子类按需重写)
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# ------------------------------------------------------------------
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def init_ui(self):
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"""构建 UI——子类必须重写"""
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pass
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def get_config(self) -> dict:
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"""返回当前步骤的配置字典——子类重写"""
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return {}
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def set_config(self, config: dict):
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"""根据 config 恢复 UI 状态——子类重写"""
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pass
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def update_work_directory(self, work_dir: str):
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"""主窗口推送工作目录变更——子类按需重写以联动自动填充"""
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self.work_dir = work_dir
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def update_from_config(self, work_dir: str, pipeline=None):
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"""主窗口推送全局状态——子类可重写以联动 pipeline 状态"""
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self.work_dir = work_dir
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self.pipeline = pipeline
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# ------------------------------------------------------------------
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# 核心通讯:沿父链向上查找 run_single_step 容器
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# ------------------------------------------------------------------
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def dispatch_execute(self, step_id: str, config: dict):
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"""
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向主窗口请求执行某个步骤。
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实现要点:
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- 沿 ``self.parent()`` 一路向上爬,直到找到具备
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``run_single_step`` 方法的祖先容器。
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- 找不到则抛出 ``RuntimeError``,便于在迁移早期定位未挂载的面板。
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"""
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ancestor = self.parent()
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while ancestor is not None and not hasattr(ancestor, "run_single_step"):
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ancestor = ancestor.parent()
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if ancestor is not None and hasattr(ancestor, "run_single_step"):
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ancestor.run_single_step(step_id, config)
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else:
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raise RuntimeError(
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"[BaseView] dispatch_execute 失败:未在父链中找到 "
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"具备 run_single_step 方法的主窗口容器 "
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f"(step_id={step_id})"
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)
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