from typing import Optional

from flet.controls.base_control import control
from flet.controls.box import BoxConstraints
from flet.controls.constrained_control import ConstrainedControl
from flet.controls.padding import PaddingValue
from flet.controls.types import ColorValue, Number, StrokeCap

__all__ = ["ProgressRing"]


@control("ProgressRing")
class ProgressRing(ConstrainedControl):
    """
    A material design circular progress indicator, which spins to indicate that the
    application is busy.

    A control that shows progress along a circle.
    """

    value: Optional[Number] = None
    """
    The value of this progress indicator.

    A value of `0.0` means no progress and `1.0` means that progress is complete.
    The value will be clamped to be in the range `0.0` - `1.0`. If `None`, this
    progress indicator is indeterminate, which means the indicator displays a
    predetermined animation that does not indicate how much actual progress is being
    made.
    """

    stroke_width: Number = 4.0
    """
    The width of the line used to draw the circle.
    """

    color: Optional[ColorValue] = None
    """
    The progress indicator's color.
    """

    bgcolor: Optional[ColorValue] = None
    """
    Color of the circular track being filled
    by the circular indicator.
    """

    stroke_align: Number = 0.0
    """
    The relative position of the stroke.

    Value typically ranges be `-1.0` (inside stroke) and `1.0` (outside stroke).

    Defaults to `0` - centered.
    """

    stroke_cap: Optional[StrokeCap] = None
    """
    The progress indicator's line ending.
    """

    semantics_label: Optional[str] = None
    """
    Used to identify the purpose of this progress bar for screen reading software. 
    """

    semantics_value: Optional[Number] = None
    """
    Used for determinate progress indicators to indicate how much progress has been made.
    """

    track_gap: Optional[Number] = None
    """
    The gap between the active indicator and the background track.
    If [`year_2023`][flet.ProgressRing.year_2023] is `False` or `Theme.use_material3` is `False`, 
    then no track gap will be drawn.
    Set `track_gap` to `0` to hide this track gap.

    If `None`, [`ProgressIndicatorTheme.track_gap`][flet.ProgressIndicatorTheme.track_gap] is used.
    If that's is also `None`, defaults to `4.0`.
    """

    size_constraints: Optional[BoxConstraints] = None
    """
    Defines the minimum and maximum size of the progress indicator.
    
    If `None`, [`ProgressIndicatorTheme.size_constraints`][flet.ProgressIndicatorTheme.size_constraints] is used.
    If that's is also `None`, defaults to a minimum width and height of `36`.
    """

    padding: Optional[PaddingValue] = None
    """
    The padding around the indicator track.
    
    If `None`, [`ProgressIndicatorTheme.circular_track_padding`][flet.ProgressIndicatorTheme.circular_track_padding] 
    is used.
    If that's is also `None` and [`year_2023`][flet.ProgressRing.year_2023] is `False`, defaults to `Padding.all(4.0)`.
    Otherwise, defaults to `Padding.all(0.0)`.
    """

    year_2023: Optional[bool] = None
    """
    TBD
    """