# Copyright 2023 (c) Anna Schumaker.
"""Our adaptable layout that can rearrange widgets as the window is resized."""
from gi.repository import GObject
from gi.repository import Gtk
from gi.repository import Adw


MIN_WIDTH = Adw.BreakpointConditionLengthType.MIN_WIDTH


class Layout(Adw.Bin):
    """A widget that can rearrange based on window dimensions."""

    show_sidebar = GObject.Property(type=bool, default=False)

    wide_view = GObject.Property(type=bool, default=False)

    def __init__(self, *, content: Gtk.Widget = None,
                 sidebar: Gtk.Widget = None):
        """Initialize our Layout widget."""
        super().__init__()
        self._split_view = Adw.OverlaySplitView(content=content,
                                                sidebar=sidebar,
                                                collapsed=not self.wide_view)
        self.props.child = self._split_view

        self.bind_property("show-sidebar", self._split_view, "show-sidebar",
                           GObject.BindingFlags.BIDIRECTIONAL)
        self.bind_property("wide-view", self._split_view, "collapsed",
                           GObject.BindingFlags.INVERT_BOOLEAN)

    def __define_breakpoint(self, property: str, value: bool,
                            length: int) -> Adw.Breakpoint:
        condition = Adw.BreakpointCondition.new_length(MIN_WIDTH, length,
                                                       Adw.LengthUnit.SP)
        breakpoint = Adw.Breakpoint.new(condition)
        breakpoint.add_setter(self, property, GObject.Value(bool, value))
        return breakpoint

    @GObject.Property(type=Gtk.Widget)
    def content(self) -> Gtk.Widget:
        """Get the content widget for the Layout."""
        return self._split_view.props.content

    @content.setter
    def content(self, widget: Gtk.Widget) -> None:
        self._split_view.props.content = widget

    @GObject.Property(type=Gtk.Widget)
    def sidebar(self) -> Gtk.Widget:
        """Get the sidebar widget for the Layout."""
        return self._split_view.props.sidebar

    @sidebar.setter
    def sidebar(self, widget: Gtk.Widget) -> None:
        self._split_view.props.sidebar = widget

    @property
    def breakpoints(self) -> list[Adw.Breakpoint]:
        """Get a list of breakpoints supported by the layout."""
        return [self.__define_breakpoint("wide-view", True, 1000)]