102 lines
3.3 KiB
JavaScript
102 lines
3.3 KiB
JavaScript
import _extends from "@babel/runtime/helpers/esm/extends";
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import { NumberInputActionTypes } from './numberInputAction.types';
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import { clampStepwise, isNumber } from './utils';
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function getClampedValues(rawValue, context) {
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const {
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min,
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max,
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step
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} = context;
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const clampedValue = rawValue === null ? null : clampStepwise(rawValue, min, max, step);
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const newInputValue = clampedValue === null ? '' : String(clampedValue);
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return {
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value: clampedValue,
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inputValue: newInputValue
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};
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}
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function stepValue(state, context, direction, multiplier) {
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const {
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value
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} = state;
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const {
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step = 1,
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min,
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max
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} = context;
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if (isNumber(value)) {
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return {
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up: value + (step != null ? step : 1) * multiplier,
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down: value - (step != null ? step : 1) * multiplier
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}[direction];
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}
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return {
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up: min != null ? min : 1,
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down: max != null ? max : -1
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}[direction];
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}
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function handleClamp(state, context, inputValue) {
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const {
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getInputValueAsString
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} = context;
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const numberValueAsString = getInputValueAsString(inputValue);
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const intermediateValue = numberValueAsString === '' || numberValueAsString === '-' ? null : parseInt(numberValueAsString, 10);
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const clampedValues = getClampedValues(intermediateValue, context);
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return _extends({}, state, clampedValues);
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}
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function handleInputChange(state, context, inputValue) {
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const {
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getInputValueAsString
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} = context;
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const numberValueAsString = getInputValueAsString(inputValue);
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if (numberValueAsString.match(/^-?\d+?$/) || numberValueAsString === '' || numberValueAsString === '-') {
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return _extends({}, state, {
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inputValue: numberValueAsString
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});
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}
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return state;
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}
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// use this for ArrowUp, ArrowDown, button clicks
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// use this with applyMultiplier: true for PageUp, PageDown, button shift-clicks
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function handleStep(state, context, applyMultiplier, direction) {
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const multiplier = applyMultiplier ? context.shiftMultiplier : 1;
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const newValue = stepValue(state, context, direction, multiplier);
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const clampedValues = getClampedValues(newValue, context);
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return _extends({}, state, clampedValues);
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}
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function handleToMinOrMax(state, context, to) {
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const newValue = context[to];
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if (!isNumber(newValue)) {
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return state;
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}
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return _extends({}, state, {
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value: newValue,
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inputValue: String(newValue)
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});
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}
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export function numberInputReducer(state, action) {
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const {
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type,
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context
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} = action;
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switch (type) {
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case NumberInputActionTypes.clamp:
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return handleClamp(state, context, action.inputValue);
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case NumberInputActionTypes.inputChange:
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return handleInputChange(state, context, action.inputValue);
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case NumberInputActionTypes.increment:
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return handleStep(state, context, action.applyMultiplier, 'up');
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case NumberInputActionTypes.decrement:
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return handleStep(state, context, action.applyMultiplier, 'down');
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case NumberInputActionTypes.incrementToMax:
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return handleToMinOrMax(state, context, 'max');
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case NumberInputActionTypes.decrementToMin:
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return handleToMinOrMax(state, context, 'min');
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case NumberInputActionTypes.resetInputValue:
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return _extends({}, state, {
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inputValue: String(state.value)
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});
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default:
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return state;
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}
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} |