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• RecycleView Data Model

RecycleView Data Model

バージョン 1.10.0 で追加.

The data model part of the RecycleView model-view-controller pattern.

It defines the models (classes) that store the data associated with a RecycleViewBehavior. Each model (class) determines how the data is stored and emits requests to the controller (RecycleViewBehavior) when the data is modified.

class kivy.uix.recycleview.datamodel.RecycleDataModelBehavior

ベースクラス: builtins.object

RecycleDataModelBehavior is the base class for the models that describes and provides the data for the RecycleViewBehavior.

Events:

on_data_changed:

Fired when the data changes. The event may dispatch keyword arguments specific to each implementation of the data model. When dispatched, the event and keyword arguments are forwarded to refresh_from_data().

attach_recycleview(rv)

Associates a RecycleViewBehavior with this data model.

detach_recycleview()

Removes the RecycleViewBehavior associated with this data model.

recycleview

The RecycleViewBehavior instance associated with this data model.

class kivy.uix.recycleview.datamodel.RecycleDataModel(**kwargs)

ベースクラス: kivy.uix.recycleview.datamodel.RecycleDataModelBehavior, kivy.event.EventDispatcher

A implementation of RecycleDataModelBehavior that keeps the data in a indexable list. See data.

When data changes this class currently dispatches on_data_changed with one of the following additional keyword arguments.

none: no keyword argument

With no additional argument it means a generic data change.

removed: a slice or integer

The value is a slice or integer indicating the indices removed.

appended: a slice

The slice in data indicating the first and last new items (i.e. the slice pointing to the new items added at the end).

inserted: a integer

The index in data where a new data item was inserted.

modified: a slice

The slice with the indices where the data has been modified. This currently does not allow changing of size etc.

data

Stores the model’s data using a list.

The data for a item at index i can also be accessed with RecycleDataModel [i].

observable_dict

A dictionary instance, which when modified will trigger a data and consequently an on_data_changed dispatch.

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