51 lines
1.4 KiB
Python
51 lines
1.4 KiB
Python
"""大屏公共结构；组件属性、事件与数据源配置保持开放"""
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from typing import Annotated, Self
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from pydantic import Field, model_validator
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from .base import ExtensibleModel, JsonObject, NonBlankString
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Number = int | float
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PositiveNumber = Annotated[Number, Field(gt=0)]
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class Canvas(ExtensibleModel):
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width: PositiveNumber
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height: PositiveNumber
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class Layout(ExtensibleModel):
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"""组件在画布上的绝对坐标和尺寸，单位 px"""
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x: Number = Field(description="左上角横坐标")
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y: Number = Field(description="左上角纵坐标")
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width: PositiveNumber
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height: PositiveNumber
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class ScreenNode(ExtensibleModel):
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id: NonBlankString
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type: NonBlankString
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layout: Layout
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name: str | None = None
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props: JsonObject = Field(default_factory=dict)
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style: JsonObject | None = None
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events: list[JsonObject] | None = None
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class Screen(ExtensibleModel):
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canvas: Canvas
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nodes: list[ScreenNode]
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# 保持前端字段名；数据源的具体类型与绑定校验后续再引入
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dataSource: list[JsonObject] = Field(default_factory=list)
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@model_validator(mode="after")
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def unique_node_ids(self) -> Self:
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seen: set[str] = set()
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for node in self.nodes:
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if node.id in seen:
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raise ValueError(f"重复的节点 ID: {node.id}")
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seen.add(node.id)
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return self
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