reflex/pynecone/components/datadisplay/datatable.py

"""Table components."""

from typing import Any, List, Optional

from pynecone.components.component import Component
from pynecone.components.tags import Tag
from pynecone.utils import format, imports, types
from pynecone.var import BaseVar, ComputedVar, Var


class Gridjs(Component):
    """A component that wraps a nivo bar component."""

    library = "gridjs-react"


class DataTable(Gridjs):
    """A data table component."""

    tag = "Grid"

    # The data to display. Either a list of dictionaries or a pandas dataframe.
    data: Any

    # The columns to display.
    columns: Var[List]

    # Enable a search bar.
    search: Var[bool]

    # Enable sorting on columns.
    sort: Var[bool]

    # Enable resizable columns.
    resizable: Var[bool]

    # Enable pagination.
    pagination: Var[bool]

    @classmethod
    def get_alias(cls) -> Optional[str]:
        """Get the alias for the component.

        Returns:
            The alias.
        """
        return "DataTableGrid"

    @classmethod
    def create(cls, *children, **props):
        """Create a datatable component.

        Args:
            *children: The children of the component.
            **props: The props to pass to the component.

        Returns:
            The datatable component.

        Raises:
            ValueError: If a pandas dataframe is passed in and columns are also provided.
        """
        data = props.get("data")
        columns = props.get("columns")

        # The annotation should be provided if data is a computed var. We need this to know how to
        # render pandas dataframes.
        if isinstance(data, ComputedVar) and data.type_ == Any:
            raise ValueError(
                "Annotation of the computed var assigned to the data field should be provided."
            )

        if columns and isinstance(columns, ComputedVar) and columns.type_ == Any:
            raise ValueError(
                "Annotation of the computed var assigned to the column field should be provided."
            )

        # If data is a pandas dataframe and columns are provided throw an error.
        if (
            types.is_dataframe(type(data))
            or (isinstance(data, Var) and types.is_dataframe(data.type_))
        ) and props.get("columns"):
            raise ValueError(
                "Cannot pass in both a pandas dataframe and columns to the data_table component."
            )

        # If data is a list and columns are not provided, throw an error
        if (
            (isinstance(data, Var) and types._issubclass(data.type_, List))
            or issubclass(type(data), List)
        ) and not props.get("columns"):
            raise ValueError(
                "column field should be specified when the data field is a list type"
            )

        # Create the component.
        return super().create(
            *children,
            **props,
        )

    def _get_imports(self) -> imports.ImportDict:
        return imports.merge_imports(
            super()._get_imports(), {"": {"gridjs/dist/theme/mermaid.css"}}
        )

    def _render(self) -> Tag:
        if isinstance(self.data, Var):
            self.columns = BaseVar(
                name=f"{self.data.name}.columns"
                if types.is_dataframe(self.data.type_)
                else f"{self.columns.name}",
                type_=List[Any],
                state=self.data.state,
            )
            self.data = BaseVar(
                name=f"{self.data.name}.data"
                if types.is_dataframe(self.data.type_)
                else f"{self.data.name}",
                type_=List[List[Any]],
                state=self.data.state,
            )

        # If given a pandas df break up the data and columns
        if types.is_dataframe(type(self.data)):
            self.columns = Var.create(list(self.data.columns.values.tolist()))  # type: ignore
            self.data = Var.create(format.format_dataframe_values(self.data))  # type: ignore

        # Render the table.
        return super()._render()