SliceListModel
-
class SliceListModel(**properties: Any)
Superclasses: Object
Implemented Interfaces: ListModel, SectionModel
GtkSliceListModel is a list model that presents a slice of another model.
This is useful when implementing paging by setting the size to the number
of elements per page and updating the offset whenever a different page is
opened.
GtkSliceListModel passes through sections from the underlying model.
Constructors
-
class SliceListModel
-
classmethod new(model: ListModel | None, offset: int, size: int) → SliceListModel
Creates a new slice model.
It presents the slice from offset to offset + size
of the given model.
- Parameters:
-
Methods
-
class SliceListModel
-
get_model() → ListModel | None
Gets the model that is currently being used or None if none.
-
get_offset() → int
Gets the offset set via set_offset().
-
get_size() → int
Gets the size set via set_size().
-
set_model(model: ListModel | None = None) → None
Sets the model to show a slice of.
The model’s item type must conform to self’s item type.
- Parameters:
model – The model to be sliced
-
set_offset(offset: int) → None
Sets the offset into the original model for this slice.
If the offset is too large for the sliced model,
self will end up empty.
- Parameters:
offset – the new offset to use
-
set_size(size: int) → None
Sets the maximum size. self will never have more items
than size.
It can however have fewer items if the offset is too large
or the model sliced from doesn’t have enough items.
- Parameters:
size – the maximum size
Properties
-
class SliceListModel
-
props.item_type: type
The type of the None singleton.
-
props.model: ListModel
The type of the None singleton.
-
props.n_items: int
The type of the None singleton.
-
props.offset: int
The type of the None singleton.
-
props.size: int
The type of the None singleton.