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"""Functions for finding and working with Asset Browsers."""
from typing import Iterable, Optional, Tuple
import bpy
from bpy_extras import asset_utils
if "functions" not in locals():
from . import functions
else:
import importlib
functions = importlib.reload(functions)
def area_for_category(screen: bpy.types.Screen, category: str) -> Optional[bpy.types.Area]:
"""Return the asset browser area that is most suitable for managing the category.
:param screen: context.window.screen
:param category: asset category, see asset_category_items in rna_space.c
:return: the area, or None if no Asset Browser area exists.
"""
def area_sorting_key(area: bpy.types.Area) -> Tuple[bool, int]:
"""Return tuple (is correct category, area size in pixels)"""
space_data = area.spaces[0]
asset_cat: str = space_data.params.asset_category
return (asset_cat == category, area.width * area.height)
areas = list(suitable_areas(screen))
if not areas:
return None
return max(areas, key=area_sorting_key)
def suitable_areas(screen: bpy.types.Screen) -> Iterable[bpy.types.Area]:
"""Generator, yield Asset Browser areas."""
for area in screen.areas:
space_data = area.spaces[0]
if not asset_utils.SpaceAssetInfo.is_asset_browser(space_data):
continue
yield area
def area_from_context(context: bpy.types.Context, category: str) -> Optional[bpy.types.Area]:
"""Return an Asset Browser suitable for the given category.
Prefers the current Asset Browser if available, otherwise the biggest.
"""
space_data = context.space_data
if not asset_utils.SpaceAssetInfo.is_asset_browser(space_data):
return area_for_category(context.screen, category)
if space_data.params.asset_category != category:
return area_for_category(context.screen, category)
return context.area
def activate_asset(
asset: bpy.types.Action, asset_browser: bpy.types.Area, *, deferred: bool
) -> None:
"""Select & focus the asset in the browser."""
space_data = asset_browser.spaces[0]
assert asset_utils.SpaceAssetInfo.is_asset_browser(space_data)
space_data.activate_asset_by_id(asset, deferred=deferred)
def tag_redraw(screen: bpy.types.Screen) -> None:
"""Tag all asset browsers for redrawing."""
for area in suitable_areas(screen):
area.tag_redraw()