@thehappycoder/react-responsive-pagination/lib/renderers/MaxWidthRenderer/useWidthCalculator/index.js

React component for responsive pagination

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import React, { useState, useCallback } from 'react';
import { createViewItem } from '../../../view';
import { createWidthCalculator } from './widthCalculator';
import ViewDomResolver from './ViewDomResolver';
import { getViewMetrics } from './getViewMetrics';
export function useWidthCalculator(view) {
    var _this = this;
    var _a = __read(useState({}), 2), _b = _a[0], calculator = _b.calculator, validForView = _b.validForView, setCalculatorWithView = _a[1];
    var resetCalculator = useCallback(function () { return setCalculatorWithView({}); }, []);
    var setupCalculator = useCallback(function (viewDomProvider) { return __awaiter(_this, void 0, void 0, function () {
        var calculatorRootMetrics, calculator;
        return __generator(this, function (_a) {
            switch (_a.label) {
                case 0: return [4 /*yield*/, getViewMetrics(viewDomProvider, rootMetricItemsToMeasure)];
                case 1:
                    calculatorRootMetrics = _a.sent();
                    calculator = createWidthCalculator(calculatorRootMetrics);
                    setCalculatorWithView({ calculator: calculator, validForView: view });
                    return [2 /*return*/];
            }
        });
    }); }, [view]);
    if (!calculator || validForView !== view) {
        return {
            measuringComponentNeedsRender: (React.createElement(ViewDomResolver, { view: view, onDomProvidable: setupCalculator })),
        };
    }
    return {
        getWidth: calculator,
        clearCache: resetCalculator,
    };
}
var rootMetricItemsToMeasure = {
    normalPageSingleDigit: createViewItem.page(8, false),
    normalPageDoubleDigit: createViewItem.page(88, false),
    activePageSingleDigit: createViewItem.page(8, true),
    activePageDoubleDigit: createViewItem.page(88, true),
    navPreviousEnabled: createViewItem.nav('previous', 0),
    navPreviousDisabled: createViewItem.nav('previous'),
    navNextEnabled: createViewItem.nav('next', 0),
    navNextDisabled: createViewItem.nav('next'),
    ellipsis: createViewItem.ellipsis('left'),
};