@nativescript/core/ui/slider/slider-common.js

A JavaScript library providing an easy to use api for interacting with iOS and Android platform APIs.

import { AccessibilityRole } from '../../accessibility';
import { CoercibleProperty, Property } from '../core/properties';
import { CSSType, View } from '../core/view';
// TODO: Extract base Range class for slider and progress
let SliderBase = class SliderBase extends View {
    constructor() {
        super(...arguments);
        this.accessibilityRole = AccessibilityRole.Adjustable;
    }
    get accessibilityStep() {
        return this.style.accessibilityStep;
    }
    set accessibilityStep(value) {
        this.style.accessibilityStep = value;
    }
};
SliderBase.valueChangeEvent = 'valueChange';
SliderBase.accessibilityIncrementEvent = 'accessibilityIncrement';
SliderBase.accessibilityDecrementEvent = 'accessibilityDecrement';
SliderBase = __decorate([
    CSSType('Slider')
], SliderBase);
export { SliderBase };
SliderBase.prototype.recycleNativeView = 'auto';
/**
 * Represents the observable property backing the value property of each Slider instance.
 */
export const valueProperty = new CoercibleProperty({
    name: 'value',
    defaultValue: 0,
    coerceValue: (target, value) => {
        value = Math.max(value, target.minValue);
        value = Math.min(value, target.maxValue);
        return value;
    },
    valueConverter: (v) => (__APPLE__ ? parseFloat(v) : parseInt(v)),
});
valueProperty.register(SliderBase);
/**
 * Represents the observable property backing the minValue property of each Slider instance.
 */
export const minValueProperty = new Property({
    name: 'minValue',
    defaultValue: 0,
    valueChanged: (target, oldValue, newValue) => {
        maxValueProperty.coerce(target);
        valueProperty.coerce(target);
    },
    valueConverter: (v) => (__APPLE__ ? parseFloat(v) : parseInt(v)),
});
minValueProperty.register(SliderBase);
/**
 * Represents the observable property backing the maxValue property of each Slider instance.
 */
export const maxValueProperty = new CoercibleProperty({
    name: 'maxValue',
    defaultValue: 100,
    coerceValue: (target, value) => {
        const minValue = target.minValue;
        if (value < minValue) {
            value = minValue;
        }
        return value;
    },
    valueChanged: (target, oldValue, newValue) => valueProperty.coerce(target),
    valueConverter: (v) => (__APPLE__ ? parseFloat(v) : parseInt(v)),
});
maxValueProperty.register(SliderBase);
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