ReverseModel

Defined in: api/node/typescript/models.ts:969 ↗

ReverseModel acts as an adapter model for a given source model by reversing all its rows. This means that the first row in the source model is the last row of this model, the second row is the second last, and so on.

Example

const source = new ArrayModel([1, 2, 3, 4, 5]);
const reversed = new ReverseModel(source);

// prints 5, 4, 3, 2, 1
for (const x of reversed) {
    console.log(x);
}

Extends

Model<T>

Type Parameters

T

T

Constructors

Constructor

new ReverseModel<T>(sourceModel): ReverseModel<T>

Defined in: api/node/typescript/models.ts:982 ↗

Constructs a new ReverseModel that provides a reversed view on the given sourceModel.

Parameters

sourceModel

Model<T>

the wrapped model.

Returns

ReverseModel<T>

Overrides

Model<T>.constructor

Properties

sourceModel

readonly sourceModel: Model<T>

Defined in: api/node/typescript/models.ts:973 ↗

The source model that this ReverseModel reverses rows from.

Methods

[iterator]()

[iterator](): Iterator<T>

Defined in: api/node/typescript/models.ts:232 ↗

Returns

Iterator<T>

Inherited from

Model.[iterator]

filter()

filter(filterFunction): FilterModel<T>

Defined in: api/node/typescript/models.ts:154 ↗

Returns a new Model that only contains the rows of this model for which filterFunction returns true.

Parameters

filterFunction

(data) => boolean

returns true if a row should be visible.

Returns

FilterModel<T>

a new FilterModel that wraps the current model.

Inherited from

Model.filter

insertRow()

insertRow(_index, _data): void

Defined in: api/node/typescript/models.ts:226 ↗

Implementations of this function must add a row at the specified index, pushing all next rows to the right.

Parameters

_index

number

index of the row to insert.

_data

T

new data item to store in a new row.

Returns

void

Inherited from

Model.insertRow

map()

map<U>(mapFunction): MapModel<T, U>

Defined in: api/node/typescript/models.ts:144 ↗

Returns a new Model where all elements are mapped by the function mapFunction.

Type Parameters

U

U

Parameters

mapFunction

(data) => U

maps the data from T to U.

Returns

MapModel<T, U>

a new MapModel that wraps the current model.

Inherited from

Model.map

pushRow()

pushRow(_data): void

Defined in: api/node/typescript/models.ts:204 ↗

Implementations of this function must add a line to the model with the provided data.

Parameters

_data

T

new data item to store in a new row.

Returns

void

Inherited from

Model.pushRow

removeRow()

removeRow(_index): void

Defined in: api/node/typescript/models.ts:214 ↗

Implementations of this function must remove the row at the specified index.

Parameters

_index

number

index of the row to remove.

Returns

void

Inherited from

Model.removeRow

reverse()

reverse(): ReverseModel<T>

Defined in: api/node/typescript/models.ts:173 ↗

Returns a new Model with the same rows as this model, in reverse order.

Returns

ReverseModel<T>

a new ReverseModel that wraps the current model.

Inherited from

Model.reverse

rowCount()

rowCount(): number

Defined in: api/node/typescript/models.ts:1007 ↗

Returns the number of entries in the model.

Returns

number

Overrides

Model.rowCount

rowData()

rowData(row): T | undefined

Defined in: api/node/typescript/models.ts:1016 ↗

Returns the data at the specified row.

Parameters

row

number

index in range 0..(rowCount() - 1).

Returns

T | undefined

undefined if row is out of range otherwise the data.

Overrides

Model.rowData

setRowData()

setRowData(row, data): void

Defined in: api/node/typescript/models.ts:1032 ↗

Stores the given data in the source model at the row that corresponds to the given reversed row index. The source model’s own change notification drives the reversed-view update (see the class docs), so this simply forwards the write.