[@rxap/material-table-system](../wiki/globals) / SelectionModel # Class: SelectionModel\ Defined in: [packages/angular/material/table-system/src/lib/select-row/selection-model.ts:16](https://gitlab.com/rxap/packages/-/blob/15b5fab8912b1042ea325e7f4d98844416018df1/packages/angular/material/table-system/src/lib/select-row/selection-model.ts#L16) Class to be used to power selecting one or more options from a list. ## Type Parameters • **T** ## Constructors ### new SelectionModel() > **new SelectionModel**\<`T`\>(`_multiple`, `initiallySelectedValues`?, `_emitChanges`?, `compareWith`?): [`SelectionModel`](../wiki/Class.SelectionModel)\<`T`\> Defined in: [packages/angular/material/table-system/src/lib/select-row/selection-model.ts:41](https://gitlab.com/rxap/packages/-/blob/15b5fab8912b1042ea325e7f4d98844416018df1/packages/angular/material/table-system/src/lib/select-row/selection-model.ts#L41) #### Parameters ##### \_multiple `boolean` = `false` ##### initiallySelectedValues? `T`[] ##### \_emitChanges? `boolean` = `true` ##### compareWith? (`o1`, `o2`) => `boolean` #### Returns [`SelectionModel`](../wiki/Class.SelectionModel)\<`T`\> ## Properties ### changed > `readonly` **changed**: `Subject`\<[`SelectionChange`](../wiki/Interface.SelectionChange)\<`T`\>\> Defined in: [packages/angular/material/table-system/src/lib/select-row/selection-model.ts:39](https://gitlab.com/rxap/packages/-/blob/15b5fab8912b1042ea325e7f4d98844416018df1/packages/angular/material/table-system/src/lib/select-row/selection-model.ts#L39) Event emitted when the value has changed. *** ### compareWith()? > `optional` **compareWith**: (`o1`, `o2`) => `boolean` Defined in: [packages/angular/material/table-system/src/lib/select-row/selection-model.ts:45](https://gitlab.com/rxap/packages/-/blob/15b5fab8912b1042ea325e7f4d98844416018df1/packages/angular/material/table-system/src/lib/select-row/selection-model.ts#L45) #### Parameters ##### o1 `T` ##### o2 `T` #### Returns `boolean` ## Accessors ### selected #### Get Signature > **get** **selected**(): `T`[] Defined in: [packages/angular/material/table-system/src/lib/select-row/selection-model.ts:30](https://gitlab.com/rxap/packages/-/blob/15b5fab8912b1042ea325e7f4d98844416018df1/packages/angular/material/table-system/src/lib/select-row/selection-model.ts#L30) Selected values. ##### Returns `T`[] ## Methods ### clear() > **clear**(`flushEvent`): `boolean` \| `void` Defined in: [packages/angular/material/table-system/src/lib/select-row/selection-model.ts:123](https://gitlab.com/rxap/packages/-/blob/15b5fab8912b1042ea325e7f4d98844416018df1/packages/angular/material/table-system/src/lib/select-row/selection-model.ts#L123) Clears all of the selected values. #### Parameters ##### flushEvent `boolean` = `true` Whether to flush the changes in an event. If false, the changes to the selection will be flushed along with the next event. #### Returns `boolean` \| `void` Whether the selection changed as a result of this call @breaking-change 16.0.0 make return type boolean *** ### deselect() > **deselect**(...`values`): `boolean` \| `void` Defined in: [packages/angular/material/table-system/src/lib/select-row/selection-model.ts:79](https://gitlab.com/rxap/packages/-/blob/15b5fab8912b1042ea325e7f4d98844416018df1/packages/angular/material/table-system/src/lib/select-row/selection-model.ts#L79) Deselects a value or an array of values. #### Parameters ##### values ...`T`[] The values to deselect #### Returns `boolean` \| `void` Whether the selection changed as a result of this call @breaking-change 16.0.0 make return type boolean *** ### hasValue() > **hasValue**(): `boolean` Defined in: [packages/angular/material/table-system/src/lib/select-row/selection-model.ts:157](https://gitlab.com/rxap/packages/-/blob/15b5fab8912b1042ea325e7f4d98844416018df1/packages/angular/material/table-system/src/lib/select-row/selection-model.ts#L157) Determines whether the model has a value. #### Returns `boolean` *** ### isEmpty() > **isEmpty**(): `boolean` Defined in: [packages/angular/material/table-system/src/lib/select-row/selection-model.ts:150](https://gitlab.com/rxap/packages/-/blob/15b5fab8912b1042ea325e7f4d98844416018df1/packages/angular/material/table-system/src/lib/select-row/selection-model.ts#L150) Determines whether the model does not have a value. #### Returns `boolean` *** ### isMultipleSelection() > **isMultipleSelection**(): `boolean` Defined in: [packages/angular/material/table-system/src/lib/select-row/selection-model.ts:173](https://gitlab.com/rxap/packages/-/blob/15b5fab8912b1042ea325e7f4d98844416018df1/packages/angular/material/table-system/src/lib/select-row/selection-model.ts#L173) Gets whether multiple values can be selected. #### Returns `boolean` *** ### isSelected() > **isSelected**(`value`): `boolean` Defined in: [packages/angular/material/table-system/src/lib/select-row/selection-model.ts:135](https://gitlab.com/rxap/packages/-/blob/15b5fab8912b1042ea325e7f4d98844416018df1/packages/angular/material/table-system/src/lib/select-row/selection-model.ts#L135) Determines whether a value is selected. #### Parameters ##### value `T` #### Returns `boolean` *** ### select() > **select**(...`values`): `boolean` \| `void` Defined in: [packages/angular/material/table-system/src/lib/select-row/selection-model.ts:65](https://gitlab.com/rxap/packages/-/blob/15b5fab8912b1042ea325e7f4d98844416018df1/packages/angular/material/table-system/src/lib/select-row/selection-model.ts#L65) Selects a value or an array of values. #### Parameters ##### values ...`T`[] The values to select #### Returns `boolean` \| `void` Whether the selection changed as a result of this call @breaking-change 16.0.0 make return type boolean *** ### setSelection() > **setSelection**(...`values`): `boolean` \| `void` Defined in: [packages/angular/material/table-system/src/lib/select-row/selection-model.ts:93](https://gitlab.com/rxap/packages/-/blob/15b5fab8912b1042ea325e7f4d98844416018df1/packages/angular/material/table-system/src/lib/select-row/selection-model.ts#L93) Sets the selected values #### Parameters ##### values ...`T`[] The new selected values #### Returns `boolean` \| `void` Whether the selection changed as a result of this call @breaking-change 16.0.0 make return type boolean *** ### sort() > **sort**(`predicate`?): `void` Defined in: [packages/angular/material/table-system/src/lib/select-row/selection-model.ts:164](https://gitlab.com/rxap/packages/-/blob/15b5fab8912b1042ea325e7f4d98844416018df1/packages/angular/material/table-system/src/lib/select-row/selection-model.ts#L164) Sorts the selected values based on a predicate function. #### Parameters ##### predicate? (`a`, `b`) => `number` #### Returns `void` *** ### toggle() > **toggle**(`value`): `boolean` \| `void` Defined in: [packages/angular/material/table-system/src/lib/select-row/selection-model.ts:112](https://gitlab.com/rxap/packages/-/blob/15b5fab8912b1042ea325e7f4d98844416018df1/packages/angular/material/table-system/src/lib/select-row/selection-model.ts#L112) Toggles a value between selected and deselected. #### Parameters ##### value `T` The value to toggle #### Returns `boolean` \| `void` Whether the selection changed as a result of this call @breaking-change 16.0.0 make return type boolean