react95-native/dist/commonjs/components/Toolbar/Toolbar.js

Refreshed Windows 95 style UI components for your React Native app

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = void 0;

var _react = _interopRequireDefault(require("react"));

var _reactNative = require("react-native");

var _ = require("../..");

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _extends() { _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; }; return _extends.apply(this, arguments); }

const chevronIconSize = 20;

// TODO: performance improvements (callbacks, refs ...etc)
const ScrollView = ({
  children,
  scrollViewProps = {},
  style,
  ...rest
}) => {
  const [contentOffset, setContentOffset] = _react.default.useState(0);

  const [contentSize, setContentSize] = _react.default.useState(0);

  const [scrollViewSize, setScrollViewSize] = _react.default.useState(0); // TODO: that's a naive approach. if it causes problems
  // trigger a callback when last child becomes fully visible


  const lastElementVisible = contentOffset + scrollViewSize < contentSize - chevronIconSize;

  const handleScroll = e => {
    var _scrollViewProps$onSc;

    (_scrollViewProps$onSc = scrollViewProps.onScroll) === null || _scrollViewProps$onSc === void 0 ? void 0 : _scrollViewProps$onSc.call(scrollViewProps, e);
    setContentOffset(e.nativeEvent.contentOffset.x);
  };

  const handleContentSizeChange = (width, height) => {
    var _scrollViewProps$onCo;

    (_scrollViewProps$onCo = scrollViewProps.onContentSizeChange) === null || _scrollViewProps$onCo === void 0 ? void 0 : _scrollViewProps$onCo.call(scrollViewProps, width, height);
    setContentSize(width);
  };

  const handleLayout = e => {
    var _scrollViewProps$onLa;

    (_scrollViewProps$onLa = scrollViewProps.onLayout) === null || _scrollViewProps$onLa === void 0 ? void 0 : _scrollViewProps$onLa.call(scrollViewProps, e);
    setScrollViewSize(e.nativeEvent.layout.width);
  };

  return /*#__PURE__*/_react.default.createElement(_reactNative.View, _extends({
    style: [styles.wrapper, {
      flexDirection: 'row'
    }, style]
  }, rest), /*#__PURE__*/_react.default.createElement(_reactNative.View, {
    style: [styles.content]
  }, /*#__PURE__*/_react.default.createElement(_reactNative.ScrollView, _extends({}, scrollViewProps, {
    showsHorizontalScrollIndicator: false,
    scrollEventThrottle: 100,
    onScroll: handleScroll,
    onContentSizeChange: handleContentSizeChange,
    onLayout: handleLayout,
    horizontal: true
  }), children)), /*#__PURE__*/_react.default.createElement(_reactNative.View, {
    style: styles.chevronIcon
  }, lastElementVisible && /*#__PURE__*/_react.default.createElement(_react.default.Fragment, null, /*#__PURE__*/_react.default.createElement(_.ChevronIcon, {
    segments: 3,
    direction: "right",
    style: {
      marginRight: 1
    }
  }), /*#__PURE__*/_react.default.createElement(_.ChevronIcon, {
    segments: 3,
    direction: "right"
  }))));
};

const styles = _reactNative.StyleSheet.create({
  wrapper: {
    display: 'flex',
    position: 'relative'
  },
  content: {
    flexGrow: 1,
    flexShrink: 1
  },
  chevronIcon: {
    justifyContent: 'center',
    flexDirection: 'row',
    alignSelf: 'flex-start',
    width: chevronIconSize
  }
});

var _default = ScrollView;
exports.default = _default;
//# sourceMappingURL=Toolbar.js.map