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Viewing / Editing File: screen.py

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from typing import Optional, TYPE_CHECKING

from .segment import Segment
from .style import StyleType
from ._loop import loop_last


if TYPE_CHECKING:
    from .console import (
        Console,
        ConsoleOptions,
        RenderResult,
        RenderableType,
        Group,
    )


class Screen:
    """A renderable that fills the terminal screen and crops excess.

    Args:
        renderable (RenderableType): Child renderable.
        style (StyleType, optional): Optional background style. Defaults to None.
    """

    renderable: "RenderableType"

    def __init__(
        self,
        *renderables: "RenderableType",
        style: Optional[StyleType] = None,
        application_mode: bool = False,
    ) -> None:
        from pip._vendor.rich.console import Group

        self.renderable = Group(*renderables)
        self.style = style
        self.application_mode = application_mode

    def __rich_console__(
        self, console: "Console", options: "ConsoleOptions"
    ) -> "RenderResult":
        width, height = options.size
        style = console.get_style(self.style) if self.style else None
        render_options = options.update(width=width, height=height)
        lines = console.render_lines(
            self.renderable or "", render_options, style=style, pad=True
        )
        lines = Segment.set_shape(lines, width, height, style=style)
        new_line = Segment("\n\r") if self.application_mode else Segment.line()
        for last, line in loop_last(lines):
            yield from line
            if not last:
                yield new_line
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