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| 1 | +import { EFFECTS, EffectsSettings, DEFAULT_EFFECT } from './constants'; |
| 2 | + |
| 3 | +const effectsList = document.querySelector('.effects__list'); |
| 4 | +const sliderFieldset = document.querySelector('.effect-level'); |
| 5 | +const effectsSlider = document.querySelector('.effect-level__slider'); |
| 6 | +const effectsSliderInput = document.querySelector('.effect-level__value'); |
| 7 | +const imagePreviewWrapper = document.querySelector('.img-upload__preview'); |
| 8 | +const imagePreview = imagePreviewWrapper.querySelector('img'); |
| 9 | + |
| 10 | +let currentEffect = DEFAULT_EFFECT; |
| 11 | +const isNoneEffect = () => currentEffect === EFFECTS.NONE; |
| 12 | + |
| 13 | +const applyEffect = (value) => { |
| 14 | + if (isNoneEffect()) { |
| 15 | + imagePreview.style.filter = ''; |
| 16 | + return; |
| 17 | + } |
| 18 | + const {style, units} = EffectsSettings[currentEffect]; |
| 19 | + imagePreview.style.filter = `${style}(${value}${units})`; |
| 20 | + effectsSliderInput.value = value; |
| 21 | +}; |
| 22 | + |
| 23 | +const initSlider = () => { |
| 24 | + noUiSlider.create(effectsSlider, EffectsSettings[currentEffect].slider); |
| 25 | + effectsSlider.noUiSlider.on('update', () => { |
| 26 | + const value = effectsSlider.noUiSlider.get(); |
| 27 | + applyEffect(value); |
| 28 | + }); |
| 29 | +}; |
| 30 | + |
| 31 | +const setEffect = (effect) => { |
| 32 | + currentEffect = effect; |
| 33 | + if (isNoneEffect()) { |
| 34 | + sliderFieldset.classList.add('hidden'); |
| 35 | + imagePreview.style.filter = ''; |
| 36 | + return; |
| 37 | + } |
| 38 | + |
| 39 | + sliderFieldset.classList.remove('hidden'); |
| 40 | + effectsSlider.noUiSlider.updateOptions(EffectsSettings[effect].slider); |
| 41 | +}; |
| 42 | + |
| 43 | +const onEffectsChange = (evt) => { |
| 44 | + if (evt.target.classList.contains('effects__radio')) { |
| 45 | + setEffect(evt.target.value); |
| 46 | + } |
| 47 | +}; |
| 48 | + |
| 49 | +const initEffects = () => { |
| 50 | + initSlider(); |
| 51 | + effectsList.addEventListener('change', onEffectsChange); |
| 52 | +}; |
| 53 | + |
| 54 | +const resetEffects = () => { |
| 55 | + setEffect(DEFAULT_EFFECT); |
| 56 | +}; |
| 57 | + |
| 58 | +export { |
| 59 | + initEffects, |
| 60 | + resetEffects |
| 61 | +}; |
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