NativeScript/nativescript-core/ui/switch/switch-common.ts

import { Color } from "../../color";
import { View, CSSType } from "../core/view";
import { booleanConverter } from "../core/view-base";
import { Property } from "../core/properties";
import { Switch as SwitchDefinition } from ".";

@CSSType("Switch")
export class SwitchBase extends View implements SwitchDefinition {
	public static checkedChangeEvent = "checkedChange";

	public checked: boolean;
	public offBackgroundColor: Color;

	_onCheckedPropertyChanged(newValue: boolean) {
		//
	}
}

SwitchBase.prototype.recycleNativeView = "auto";

function onCheckedPropertyChanged(
	switchBase: SwitchBase,
	oldValue: boolean,
	newValue: boolean
) {
	switchBase._onCheckedPropertyChanged(newValue);
}

export const checkedProperty = new Property<SwitchBase, boolean>({
	name: "checked",
	defaultValue: false,
	valueConverter: booleanConverter,
	valueChanged: onCheckedPropertyChanged,
});
checkedProperty.register(SwitchBase);

export const offBackgroundColorProperty = new Property<SwitchBase, Color>({
	name: "offBackgroundColor",
	equalityComparer: Color.equals,
	valueConverter: (v) => new Color(v),
});
offBackgroundColorProperty.register(SwitchBase);