efa8d942b8
The grid layout type for UI list is planned for removal in 5.0, see blender/blender#110461. In previous UI meetings, we talked about deprecating the Grid mode of the UI list, which is not actually accessible in UI and was never used. Nowadays, there is a new grid view that can be exposed in the API in the future. Initially, I wanted to remove references to layout_type in UI templates in the text editor, because a lot of add-on developers on the extensions platform base their lists on that code, and a lot of them are therefore including soon to be deprecated code in their add-ons, which I want to avoid in the future. But I thought we might as well remove it from our python scripts as well, since it's just basically redundant code that doesn't do anything. And also because many add-on developers use bundled python scripts for references as well. Pull Request: https://projects.blender.org/blender/blender/pulls/138395
45 lines
1.9 KiB
Python
45 lines
1.9 KiB
Python
import bpy
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class MESH_UL_mylist(bpy.types.UIList):
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# Constants (flags)
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# Be careful not to shadow FILTER_ITEM (i.e. UIList().bitflag_filter_item)!
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# E.g. VGROUP_EMPTY = 1 << 0
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# Custom properties, saved with .blend file. E.g.
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# use_filter_empty: bpy.props.BoolProperty(
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# name="Filter Empty", default=False, options=set(),
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# description="Whether to filter empty vertex groups",
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# )
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# Called for each drawn item.
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def draw_item(self, context, layout, data, item, icon, active_data, active_propname, index, flt_flag):
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pass
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# Called once to draw filtering/reordering options.
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def draw_filter(self, context, layout):
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# Nothing much to say here, it's usual UI code...
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pass
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# Called once to filter/reorder items.
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def filter_items(self, context, data, propname):
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# This function gets the collection property (as the usual tuple (data, propname)), and must return two lists:
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# * The first one is for filtering, it must contain 32bit integers were self.bitflag_filter_item marks the
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# matching item as filtered (i.e. to be shown). The upper 16 bits (including self.bitflag_filter_item) are
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# reserved for internal use, the lower 16 bits are free for custom use. Here we use the first bit to mark
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# VGROUP_EMPTY.
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# * The second one is for reordering, it must return a list containing the new indices of the items (which
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# gives us a mapping org_idx -> new_idx).
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# Please note that the default `UI_UL_list` defines helper functions for common tasks
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# (see its doc for more info).
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# If you do not make filtering and/or ordering, return empty list(s)
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# (this will be more efficient than returning full lists doing nothing!).
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# Default return values.
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flt_flags = []
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flt_neworder = []
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# Do filtering/reordering here...
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return flt_flags, flt_neworder
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