https://bugs.documentfoundation.org/show_bug.cgi?id=151932
Bug ID: 151932
Summary: GalleryItem ( XGalleryItem ) wipes some of its
properties as soon as it is returned from a funciton.
Product: LibreOffice
Version: 7.3.6.2 release
Hardware: All
OS: All
Status: UNCONFIRMED
Severity: normal
Priority: medium
Component: LibreOffice
Assignee: [email protected]
Reporter: [email protected]
GalleryItem ( XGalleryItem ) wipes some of its properties as soon as it is
returned from a funciton.
This bug is found in Python
When a GalleryItem is passed from a function it looses Drawing, Graphic, etc,
properties.
Pseudo code for illustration
> import sys
>
> def find_gallery_item(gallery_name: str, name: str) -> XGalleryItem:
> gallery = get_gallery(gallery_name) # XGalleryTheme
> num_pics = gallery.getCount()
>
> result = None
> for i in range(num_pics):
> item = gallery.getByIndex(i)
> # run code to find item.
> result = item
> break
>
> # sys.getrefcount() adds a refcount so sys.getrefcount() - 1
> # Reference count for result.Drawing is 0
> print("result.Drawing ref count:", sys.getrefcount(result.Drawing) - 1)
> # this means as soon as result is return from this function then
> #python garbage collector deletes result.Drawing
>
> # this next line report as expected. result.Drawing is XDrawing instance
> report_gallery_item(result)
> return result
>
> def report_gallery_item(item: XGalleryItem) -> None:
> if item is None:
> print("Gallery item is null")
> return
>
> print("Gallery item information:")
> url = str(mProps.Props.get(item, "URL"))
> path = mFileIo.FileIO.uri_to_path(uri_fnm=url, ensure_absolute=False)
> print(f' URL: "{url}"')
> print(f' Fnm: "{Path(Gallery.gallery_dir,
> mFileIo.FileIO.get_fnm(path))}"')
> print(f" Path: {path}")
>
> print(f' Title: "{mProps.Props.get(item, "Title")}"')
> item_int_type = int(mProps.Props.get(item, "GalleryItemType"))
> print(f" Type:
> {cls.get_item_type_str(GalleryItemTypeEnum(item_int_type))}")
>
> item = find_gallery_item(gallery_name="Shapes", name="Sun")
>
> report_gallery_item(item) # at this point item.Drawing is None
I have documented this in some detail on Ask.
https://ask.libreoffice.org/t/libreoffice-wiping-object-properties-issue-with-gallerythemeprovider/83182
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