def mime_data_get_display_items(
mime_data: UserInterface.MimeData,
document_model: "DocumentModel.DocumentModel"
) -> typing.List[DisplayItem.DisplayItem]:
display_items: typing.List[DisplayItem.DisplayItem] = list()
if mime_data.has_format(DISPLAY_ITEMS_MIME_TYPE):
data_sources_mime_data = json.loads(
mime_data.data_as_string(DISPLAY_ITEMS_MIME_TYPE))
for data_source_mime_data in data_sources_mime_data:
display_item_specifier = Persistence.PersistentObjectSpecifier.read(
data_source_mime_data["display_item_specifier"])
display_item = document_model.resolve_item_specifier(
display_item_specifier)
if display_item:
display_items.append(
typing.cast(DisplayItem.DisplayItem, display_item))
if mime_data.has_format(DISPLAY_ITEM_MIME_TYPE):
data_source_mime_data = json.loads(
mime_data.data_as_string(DISPLAY_ITEM_MIME_TYPE))
display_item_specifier = Persistence.PersistentObjectSpecifier.read(
data_source_mime_data["display_item_specifier"])
display_item = document_model.resolve_item_specifier(
display_item_specifier)
if display_item:
display_items.append(
typing.cast(DisplayItem.DisplayItem, display_item))
return display_items
def mime_data_get_display_item(mime_data: UserInterface.MimeData, document_model: DocumentModel.DocumentModel) -> typing.Optional[DisplayItem.DisplayItem]:
display_item = None
if mime_data.has_format(DISPLAY_ITEM_MIME_TYPE):
data_source_mime_data = json.loads(mime_data.data_as_string(DISPLAY_ITEM_MIME_TYPE))
display_item_specifier = Persistence.read_persistent_specifier(data_source_mime_data["display_item_specifier"])
display_item = typing.cast(typing.Optional[DisplayItem.DisplayItem], document_model.resolve_item_specifier(display_item_specifier)) if display_item_specifier else None
return display_item
def mime_data_get_panel(mime_data: UserInterface.MimeData, document_model: DocumentModel.DocumentModel) -> typing.Tuple[typing.Optional[DisplayItem.DisplayItem], Persistence.PersistentDictType]:
display_item = None
d: Persistence.PersistentDictType = dict()
if mime_data.has_format(DISPLAY_PANEL_MIME_TYPE):
d = json.loads(mime_data.data_as_string(DISPLAY_PANEL_MIME_TYPE))
if "display_item_specifier" in d:
display_item_specifier = Persistence.read_persistent_specifier(d["display_item_specifier"])
display_item = typing.cast(typing.Optional[DisplayItem.DisplayItem], document_model.resolve_item_specifier(display_item_specifier)) if display_item_specifier else None
return display_item, d
def mime_data_get_panel(mime_data: UserInterface.MimeData, document_model: "DocumentModel.DocumentModel") -> typing.Tuple[typing.Optional[DisplayItem.DisplayItem], typing.Dict]:
display_item = None
d = dict()
if mime_data.has_format(DISPLAY_PANEL_MIME_TYPE):
d = json.loads(mime_data.data_as_string(DISPLAY_PANEL_MIME_TYPE))
if "display_item_specifier" in d:
display_item_specifier = Persistence.PersistentObjectSpecifier.read(d["display_item_specifier"])
display_item = document_model.resolve_item_specifier(display_item_specifier)
return display_item, d
def mime_data_get_graphics(mime_data: UserInterface.MimeData) -> typing.Sequence[Graphics.Graphic]:
graphics = list()
if mime_data.has_format(GRAPHICS_MIME_TYPE):
json_str = mime_data.data_as_string(GRAPHICS_MIME_TYPE)
graphics_dict = json.loads(json_str)
for graphic_dict in graphics_dict.get("graphics", list()):
graphic = Graphics.factory(lambda t: str(graphic_dict["type"]))
graphic.read_from_mime_data(graphic_dict)
if graphic:
graphics.append(graphic)
return graphics
def mime_data_get_data_source(mime_data: UserInterface.MimeData, document_model: DocumentModel.DocumentModel) -> typing.Tuple[typing.Optional[DisplayItem.DisplayItem], typing.Optional[Graphics.Graphic]]:
display_item = None
graphic = None
if mime_data.has_format(DATA_SOURCE_MIME_TYPE):
data_source_mime_data = json.loads(mime_data.data_as_string(DATA_SOURCE_MIME_TYPE))
display_item_specifier = Persistence.read_persistent_specifier(data_source_mime_data["display_item_specifier"])
display_item = typing.cast(typing.Optional[DisplayItem.DisplayItem], document_model.resolve_item_specifier(display_item_specifier)) if display_item_specifier else None
if "graphic_specifier" in data_source_mime_data:
graphic_specifier = Persistence.read_persistent_specifier(data_source_mime_data["graphic_specifier"])
graphic = typing.cast(typing.Optional[Graphics.Graphic], document_model.resolve_item_specifier(graphic_specifier)) if graphic_specifier else None
return display_item, graphic