CollectionViewModel

public struct CollectionViewModel : DiffableViewModel

extension CollectionViewModel: Collection, RandomAccessCollection

extension CollectionViewModel: CustomDebugStringConvertible

Represents a collection view with sections and items.

empty
Returns the empty collection view model.
Declaration
Swift

public static var empty: `Self` { get }

DiffableViewModel

id
A unique id for this model.
Declaration
Swift

public let id: UniqueIdentifier

Properties

sections
The sections in the collection.
Declaration
Swift

public let sections: [SectionViewModel]

Init


                    
                    
                    init(id:sections:)

Initializes a new CollectionViewModel.

Declaration

Swift

public init(id: UniqueIdentifier, sections: [SectionViewModel] = [])

Parameters

`id`	A unique identifier for the collection.
`sections`	The sections in the collection.

Accessing Sections


                    
                    
                    sectionViewModel(for:)

Returns the section for the specified id.

Declaration

Swift

public func sectionViewModel(for id: UniqueIdentifier) -> SectionViewModel?

Parameters

`id`	The identifier for the section.

Return Value

The section, if it exists.


                    
                    
                    sectionViewModel(at:)

Returns the section at the specified index.

Precondition

The specified index must be valid.

Declaration

Swift

public func sectionViewModel(at index: Int) -> SectionViewModel

Parameters


                                index

The index of the section.

Return Value

The section at index.

Accessing Cells


                    
                    
                    cellViewModel(for:)

Returns the cell for the specified id.

Declaration

Swift

public func cellViewModel(for id: UniqueIdentifier) -> AnyCellViewModel?

Parameters

`id`	The identifier for the cell.

Return Value

The cell, if it exists.


                    
                    
                    cellViewModel(at:)

Returns the cell at the specified index path.

Precondition

The specified indexPath must be valid.

Declaration

Swift

public func cellViewModel(at indexPath: IndexPath) -> AnyCellViewModel

Parameters


                                indexPath

The index path of the cell.

Return Value

The cell at indexPath.

Accessing Supplementary Views


                    
                    
                    supplementaryViewModel(for:)

Returns the supplementary view for the specified id.

Declaration

Swift

public func supplementaryViewModel(for id: UniqueIdentifier) -> AnySupplementaryViewModel?

Parameters

`id`	The identifier for the supplementary view.

Return Value

The supplementary view, if it exists.


                    
                    
                    supplementaryViewModel(ofKind:at:)

Returns the supplementary view for the specified kind and index path.

Precondition

The specified indexPath must be valid.

Declaration

Swift

public func supplementaryViewModel(ofKind kind: String, at indexPath: IndexPath) -> AnySupplementaryViewModel?

Parameters

`kind`	The kind of the supplementary view.
`indexPath`	The index path for the view.

Return Value

The supplementary view.

Subscript


                    
                    
                    subscript(_:)

Returns the cell at the specified index path.

Precondition

The specified indexPath must be valid.

Declaration

Swift

public subscript(indexPath: IndexPath) -> AnyCellViewModel { get }

Parameters


                                indexPath

The index path of the cell.

Return Value

The cell at indexPath.


                    
                    
                    subscript(item:section:)

Returns the cell at the specified indexes.

Precondition

The specified indexes must be valid.

Declaration

Swift

public subscript(item item: Int, section section: Int) -> AnyCellViewModel { get }

Parameters

`item`	The item index of the cell.
`section`	The section index of the cell.

Return Value

The cell at item and section.