react-fluid-grid/dist/index.cjs.js

Responsive layout similar to pinterest. Items placed in columns according to their order and height.

'use strict';

Object.defineProperty(exports, '__esModule', { value: true });

function _interopDefault (ex) { return (ex && (typeof ex === 'object') && 'default' in ex) ? ex['default'] : ex; }

var React = _interopDefault(require('react'));
var PropTypes = _interopDefault(require('prop-types'));

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);
}

function _inheritsLoose(subClass, superClass) {
  subClass.prototype.__proto__ = superClass && superClass.prototype;
  subClass.__proto__ = superClass;
}

function _assertThisInitialized(self) {
  if (self === void 0) {
    throw new ReferenceError("this hasn't been initialised - super() hasn't been called");
  }

  return self;
}

var commonjsGlobal = typeof window !== 'undefined' ? window : typeof global !== 'undefined' ? global : typeof self !== 'undefined' ? self : {};

function createCommonjsModule(fn, module) {
	return module = { exports: {} }, fn(module, module.exports), module.exports;
}

var ResizeSensor = createCommonjsModule(function (module, exports) {

/**
 * Copyright Marc J. Schmidt. See the LICENSE file at the top-level
 * directory of this distribution and at
 * https://github.com/marcj/css-element-queries/blob/master/LICENSE.
 */
(function (root, factory) {
    if (typeof undefined === "function" && undefined.amd) {
        undefined(factory);
    } else {
        module.exports = factory();
    }
}(typeof window !== 'undefined' ? window : commonjsGlobal, function () {

    // Make sure it does not throw in a SSR (Server Side Rendering) situation
    if (typeof window === "undefined") {
        return null;
    }
    // Only used for the dirty checking, so the event callback count is limited to max 1 call per fps per sensor.
    // In combination with the event based resize sensor this saves cpu time, because the sensor is too fast and
    // would generate too many unnecessary events.
    var requestAnimationFrame = window.requestAnimationFrame ||
        window.mozRequestAnimationFrame ||
        window.webkitRequestAnimationFrame ||
        function (fn) {
            return window.setTimeout(fn, 20);
        };

    /**
     * Iterate over each of the provided element(s).
     *
     * @param {HTMLElement|HTMLElement[]} elements
     * @param {Function}                  callback
     */
    function forEachElement(elements, callback){
        var elementsType = Object.prototype.toString.call(elements);
        var isCollectionTyped = ('[object Array]' === elementsType
            || ('[object NodeList]' === elementsType)
            || ('[object HTMLCollection]' === elementsType)
            || ('[object Object]' === elementsType)
            || ('undefined' !== typeof jQuery && elements instanceof jQuery) //jquery
            || ('undefined' !== typeof Elements && elements instanceof Elements) //mootools
        );
        var i = 0, j = elements.length;
        if (isCollectionTyped) {
            for (; i < j; i++) {
                callback(elements[i]);
            }
        } else {
            callback(elements);
        }
    }

    /**
    * Get element size
    * @param {HTMLElement} element
    * @returns {Object} {width, height}
    */
    function getElementSize(element) {
        if (!element.getBoundingClientRect) {
            return {
                width: element.offsetWidth,
                height: element.offsetHeight
            }
        }

        var rect = element.getBoundingClientRect();
        return {
            width: Math.round(rect.width),
            height: Math.round(rect.height)
        }
    }

    /**
     * Class for dimension change detection.
     *
     * @param {Element|Element[]|Elements|jQuery} element
     * @param {Function} callback
     *
     * @constructor
     */
    var ResizeSensor = function(element, callback) {
        /**
         *
         * @constructor
         */
        function EventQueue() {
            var q = [];
            this.add = function(ev) {
                q.push(ev);
            };

            var i, j;
            this.call = function() {
                for (i = 0, j = q.length; i < j; i++) {
                    q[i].call();
                }
            };

            this.remove = function(ev) {
                var newQueue = [];
                for(i = 0, j = q.length; i < j; i++) {
                    if(q[i] !== ev) newQueue.push(q[i]);
                }
                q = newQueue;
            };

            this.length = function() {
                return q.length;
            };
        }

        /**
         *
         * @param {HTMLElement} element
         * @param {Function}    resized
         */
        function attachResizeEvent(element, resized) {
            if (!element) return;
            if (element.resizedAttached) {
                element.resizedAttached.add(resized);
                return;
            }

            element.resizedAttached = new EventQueue();
            element.resizedAttached.add(resized);

            element.resizeSensor = document.createElement('div');
            element.resizeSensor.dir = 'ltr';
            element.resizeSensor.className = 'resize-sensor';
            var style = 'position: absolute; left: -10px; top: -10px; right: 0; bottom: 0; overflow: hidden; z-index: -1; visibility: hidden;';
            var styleChild = 'position: absolute; left: 0; top: 0; transition: 0s;';

            element.resizeSensor.style.cssText = style;
            element.resizeSensor.innerHTML =
                '<div class="resize-sensor-expand" style="' + style + '">' +
                    '<div style="' + styleChild + '"></div>' +
                '</div>' +
                '<div class="resize-sensor-shrink" style="' + style + '">' +
                    '<div style="' + styleChild + ' width: 200%; height: 200%"></div>' +
                '</div>';
            element.appendChild(element.resizeSensor);

            var position = window.getComputedStyle(element).getPropertyValue('position');
            if ('absolute' !== position && 'relative' !== position && 'fixed' !== position) {
                element.style.position = 'relative';
            }

            var expand = element.resizeSensor.childNodes[0];
            var expandChild = expand.childNodes[0];
            var shrink = element.resizeSensor.childNodes[1];
            var dirty, rafId, newWidth, newHeight;
            var size = getElementSize(element);
            var lastWidth = size.width;
            var lastHeight = size.height;

            var reset = function() {
                //set display to block, necessary otherwise hidden elements won't ever work
                var invisible = element.offsetWidth === 0 && element.offsetHeight === 0;

                if (invisible) {
                    var saveDisplay = element.style.display;
                    element.style.display = 'block';
                }

                expandChild.style.width = '100000px';
                expandChild.style.height = '100000px';

                expand.scrollLeft = 100000;
                expand.scrollTop = 100000;

                shrink.scrollLeft = 100000;
                shrink.scrollTop = 100000;

                if (invisible) {
                    element.style.display = saveDisplay;
                }
            };
            element.resizeSensor.resetSensor = reset;

            var onResized = function() {
                rafId = 0;

                if (!dirty) return;

                lastWidth = newWidth;
                lastHeight = newHeight;

                if (element.resizedAttached) {
                    element.resizedAttached.call();
                }
            };

            var onScroll = function() {
                var size = getElementSize(element);
                var newWidth = size.width;
                var newHeight = size.height;
                dirty = newWidth != lastWidth || newHeight != lastHeight;

                if (dirty && !rafId) {
                    rafId = requestAnimationFrame(onResized);
                }

                reset();
            };

            var addEvent = function(el, name, cb) {
                if (el.attachEvent) {
                    el.attachEvent('on' + name, cb);
                } else {
                    el.addEventListener(name, cb);
                }
            };

            addEvent(expand, 'scroll', onScroll);
            addEvent(shrink, 'scroll', onScroll);
            
			// Fix for custom Elements
			requestAnimationFrame(reset);
        }

        forEachElement(element, function(elem){
            attachResizeEvent(elem, callback);
        });

        this.detach = function(ev) {
            ResizeSensor.detach(element, ev);
        };

        this.reset = function() {
            element.resizeSensor.resetSensor();
        };
    };

    ResizeSensor.reset = function(element, ev) {
        forEachElement(element, function(elem){
            elem.resizeSensor.resetSensor();
        });
    };

    ResizeSensor.detach = function(element, ev) {
        forEachElement(element, function(elem){
            if (!elem) return;
            if(elem.resizedAttached && typeof ev === "function"){
                elem.resizedAttached.remove(ev);
                if(elem.resizedAttached.length()) return;
            }
            if (elem.resizeSensor) {
                if (elem.contains(elem.resizeSensor)) {
                    elem.removeChild(elem.resizeSensor);
                }
                delete elem.resizeSensor;
                delete elem.resizedAttached;
            }
        });
    };

    return ResizeSensor;

}));
});

var SizeObservable =
/*#__PURE__*/
function () {
  function SizeObservable(element) {
    this.element = element;
    this.observers = [];
    this.handleResize = this.handleResize.bind(this);
    this.createSizeObservable();
  }

  var _proto = SizeObservable.prototype;

  _proto.register = function register(observer) {
    this.observers.push(observer);
  };

  _proto.unregister = function unregister(observerToUnregister) {
    this.observers = this.observers.filter(function (observer) {
      return observer !== observerToUnregister;
    });
  };

  _proto.handleResize = function handleResize() {
    var size = getSize(this.element);
    this.observers.forEach(function (observer) {
      return observer(size);
    });
  };

  _proto.createSizeObservable = function createSizeObservable() {
    return new ResizeSensor(this.element, this.handleResize);
  };

  return SizeObservable;
}();

function getSize(element) {
  return {
    height: element.clientHeight,
    width: element.clientWidth
  };
}

var ResizeObservingContainer =
/*#__PURE__*/
function (_React$Component) {
  function ResizeObservingContainer(props) {
    var _this;

    _this = _React$Component.call(this, props) || this;
    _this.state = {
      height: null,
      width: null
    };
    _this.container = React.createRef();
    _this.createSizeObservable = _this.createSizeObservable.bind(_assertThisInitialized(_assertThisInitialized(_this)));
    _this.notifyHeightChange = _this.notifyHeightChange.bind(_assertThisInitialized(_assertThisInitialized(_this)));
    _this.notifyWidthChange = _this.notifyWidthChange.bind(_assertThisInitialized(_assertThisInitialized(_this)));
    _this.updateSize = _this.updateSize.bind(_assertThisInitialized(_assertThisInitialized(_this)));
    return _this;
  }

  var _proto = ResizeObservingContainer.prototype;

  _proto.componentDidMount = function componentDidMount() {
    this.createSizeObservable(this.container.current);
  };

  _proto.notifyHeightChange = function notifyHeightChange(_ref) {
    var height = _ref.height;

    if (height !== this.state.height) {
      executeIfDefined(this.props.onHeightChange, height);
    }
  };

  _proto.notifyWidthChange = function notifyWidthChange(_ref2) {
    var width = _ref2.width;

    if (width !== this.state.width) {
      executeIfDefined(this.props.onWidthChange, width);
    }
  };

  _proto.updateSize = function updateSize(size) {
    this.setState(size);
  };

  _proto.createSizeObservable = function createSizeObservable(element) {
    var sizeObservable = new SizeObservable(element);
    sizeObservable.register(this.notifyHeightChange);
    sizeObservable.register(this.notifyWidthChange);
    sizeObservable.register(this.updateSize);
  };

  _proto.render = function render() {
    var children = this.props.children;
    var passedProps = Object.assign({}, this.props);
    delete passedProps.onHeightChange;
    delete passedProps.onWidthChange;
    delete passedProps.children;
    return React.createElement("div", _extends({}, passedProps, {
      ref: this.container
    }), children);
  };

  _inheritsLoose(ResizeObservingContainer, _React$Component);

  return ResizeObservingContainer;
}(React.Component);

function executeIfDefined(func) {
  if (typeof func === 'function') {
    for (var _len = arguments.length, params = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
      params[_key - 1] = arguments[_key];
    }

    func.apply(void 0, params);
  }
}

ResizeObservingContainer.propTypes = {
  children: PropTypes.node,
  onHeightChange: PropTypes.func,
  onWidthChange: PropTypes.func
};

function getSafeNumberOfColumns(numberOfColumns) {
  return numberOfColumns > 0 ? numberOfColumns : 1;
}

function round(value, decimals) {
  var decimalsShift = Math.pow(10, decimals);
  return Math.round(value * decimalsShift) / decimalsShift;
}

var WIDTH_PRECISION = 2;
function getColumnWidth(numberOfColumns) {
  var safeNumberOfColumns = getSafeNumberOfColumns(numberOfColumns);
  var width = 100 / safeNumberOfColumns;
  return round(width, WIDTH_PRECISION);
}

function getOuterGutterPortion(gutterWidth, numberOfColumns) {
  var safeNumberOfColumns = getSafeNumberOfColumns(numberOfColumns);
  return gutterWidth / safeNumberOfColumns;
}

var DEFAULT_ITEM_STYLES = {
  horizontalGutterShift: 0,
  left: 0,
  top: 0
};
function getItemStyles(item, dridStyles) {
  var mergedStyles = Object.assign({}, DEFAULT_ITEM_STYLES, item, dridStyles);
  mergedStyles.outerGutterPortion = getOuterGutterPortion(dridStyles.gutterWidth, dridStyles.numberOfColumns);
  return dridStyles.gridWidth ? getItemStylesForKnownWidth(mergedStyles) : getItemStylesForUnknownWidth(mergedStyles);
}

function getItemStylesForKnownWidth(_ref) {
  var columnWidth = _ref.columnWidth,
      horizontalGutterShift = _ref.horizontalGutterShift,
      gridWidth = _ref.gridWidth,
      outerGutterPortion = _ref.outerGutterPortion,
      gutterWidth = _ref.gutterWidth,
      left = _ref.left,
      top = _ref.top,
      transition = _ref.transition;
  return {
    left: left * gridWidth / 100 + horizontalGutterShift + "px",
    position: 'absolute',
    top: top + "px",
    transition: transition,
    width: gridWidth * columnWidth / 100 - gutterWidth + outerGutterPortion + "px"
  };
}

function getItemStylesForUnknownWidth(_ref2) {
  var columnWidth = _ref2.columnWidth,
      horizontalGutterShift = _ref2.horizontalGutterShift,
      outerGutterPortion = _ref2.outerGutterPortion,
      gutterWidth = _ref2.gutterWidth,
      left = _ref2.left,
      top = _ref2.top,
      transition = _ref2.transition;
  return {
    left: "calc(" + left + "% + " + horizontalGutterShift + "px)",
    position: 'absolute',
    top: top + "px",
    transition: transition,
    width: "calc(" + columnWidth + "% - " + gutterWidth + "px + " + outerGutterPortion + "px)"
  };
}

function FluidGridItem(_ref) {
  var children = _ref.children,
      className = _ref.className,
      columnWidth = _ref.columnWidth,
      gridWidth = _ref.gridWidth,
      gutterWidth = _ref.gutterWidth,
      item = _ref.item,
      index = _ref.index,
      numberOfColumns = _ref.numberOfColumns,
      onHeightChange = _ref.onHeightChange,
      registerItem = _ref.registerItem,
      transition = _ref.transition;

  if (!children) {
    return null;
  }

  var style = getItemStyles(item, {
    columnWidth: columnWidth,
    gridWidth: gridWidth,
    gutterWidth: gutterWidth,
    numberOfColumns: numberOfColumns,
    transition: transition
  });
  return React.createElement("div", {
    className: className,
    ref: registerItem,
    style: style
  }, React.createElement(ResizeObservingContainer, {
    onHeightChange: onHeightChange
  }, children));
}

FluidGridItem.propTypes = {
  children: PropTypes.node,
  className: PropTypes.string,
  columnWidth: PropTypes.number,
  gridWidth: PropTypes.number,
  gutterWidth: PropTypes.number,
  item: PropTypes.object,
  index: PropTypes.number.isRequired,
  numberOfColumns: PropTypes.number,
  onHeightChange: PropTypes.func.isRequired,
  registerItem: PropTypes.func.isRequired,
  transition: PropTypes.string
};
FluidGridItem.defaultProps = {
  className: '',
  transition: 'top 200ms ease-in-out, left 200ms ease-in-out, width 200ms ease-in-out'
};

function getShortestColumn(columns) {
  var getShortest = function getShortest(shortestColumn, column, index) {
    return shortestColumn.height <= column.height ? shortestColumn : column;
  };

  return columns.reduce(getShortest, columns[0]);
}

function getLongestColumn(columns) {
  var getLongest = function getLongest(longestColumn, column, index) {
    return longestColumn.height > column.height ? longestColumn : column;
  };

  return columns.reduce(getLongest, columns[0]);
}

var INITIAL_HEIGHT = 0;
function getColumns(columnWidth, gutterWidth, numberOfColumns) {
  var columns = [];

  for (var i = 0; i < numberOfColumns; i++) {
    columns.push({
      height: INITIAL_HEIGHT,
      horizontalGutterShift: gutterWidth * i / numberOfColumns,
      left: columnWidth * i
    });
  }

  return columns;
}

function getColumnHeightShift(itemHeight, gutterHeight) {
  return itemHeight ? itemHeight + gutterHeight : 0;
}

var defaultStyleStrategies = [{
  mediaQuery: '(max-width: 719.9px)',
  style: {
    numberOfColumns: 1,
    gutterHeight: 8,
    gutterWidth: 8
  }
}, {
  mediaQuery: '(min-width: 720px) and (max-width: 1023.9px)',
  style: {
    numberOfColumns: 2,
    gutterHeight: 16,
    gutterWidth: 16
  }
}, {
  mediaQuery: '(min-width: 1024px) and (max-width: 1919.9px)',
  style: {
    numberOfColumns: 3,
    gutterHeight: 24,
    gutterWidth: 24
  }
}, {
  mediaQuery: '(min-width: 1920px)',
  style: {
    numberOfColumns: 4,
    gutterHeight: 24,
    gutterWidth: 24
  }
}];

var DEFAULT_STYLE = {
  numberOfColumns: 1,
  gutterHeight: 0,
  gutterWidth: 0
};

var detectNode = createCommonjsModule(function (module) {
module.exports = false;

// Only Node.JS has a process variable that is of [[Class]] process
try {
 module.exports = Object.prototype.toString.call(commonjsGlobal.process) === '[object process]'; 
} catch(e) {}
});

function getStyle(styleStrategies) {
  if (detectNode) {
    return DEFAULT_STYLE;
  }

  var matchingStrategy = styleStrategies.find(isMatch);
  return matchingStrategy ? matchingStrategy.style : DEFAULT_STYLE;
}

function isMatch(_ref) {
  var mediaQuery = _ref.mediaQuery;
  return window.matchMedia(mediaQuery).matches;
}

var FluidGrid =
/*#__PURE__*/
function (_React$Component) {
  function FluidGrid(props) {
    var _this;

    _this = _React$Component.call(this, props) || this;
    _this.state = {
      items: {},
      height: '0px',
      overflow: 'hidden',
      position: 'relative'
    };
    _this.items = {};
    _this.updateLayout = _this.updateLayout.bind(_assertThisInitialized(_assertThisInitialized(_this)));
    _this.renderChild = _this.renderChild.bind(_assertThisInitialized(_assertThisInitialized(_this)));
    _this.pushToShortestColumn = _this.pushToShortestColumn.bind(_assertThisInitialized(_assertThisInitialized(_this)));
    _this.updateGridStyles = _this.updateGridStyles.bind(_assertThisInitialized(_assertThisInitialized(_this)));
    return _this;
  }

  var _proto = FluidGrid.prototype;

  _proto.componentDidMount = function componentDidMount() {
    this.updateGridStyles();
  };

  _proto.componentDidUpdate = function componentDidUpdate(prevProps, prevState) {
    if (this.refreshRequired(prevProps, prevState)) {
      this.updateLayout();
    }
  };

  _proto.refreshRequired = function refreshRequired(prevProps, prevState) {
    return prevProps.children !== this.props.children || prevState.numberOfColumns !== this.state.numberOfColumns || prevState.gutterHeight !== this.state.gutterHeight || prevState.gutterWidth !== this.state.gutterWidth;
  };

  _proto.updateLayout = function updateLayout() {
    this.initColumns();
    this.arrangeItems();
    this.setGridHeight();
    this.applyChanges();
  };

  _proto.initColumns = function initColumns() {
    var _this$state = this.state,
        columnWidth = _this$state.columnWidth,
        gutterWidth = _this$state.gutterWidth,
        numberOfColumns = _this$state.numberOfColumns;
    this.columns = getColumns(columnWidth, gutterWidth, numberOfColumns);
  };

  _proto.arrangeItems = function arrangeItems() {
    Object.values(this.items).forEach(this.pushToShortestColumn);
  };

  _proto.pushToShortestColumn = function pushToShortestColumn(item) {
    var column = getShortestColumn(this.columns);
    this.setItemStyle(item, column);
    this.pushToColumn(item, column);
  };

  _proto.pushToColumn = function pushToColumn(item, column) {
    var gutterHeight = this.state.gutterHeight;
    var itemHeight = item.element.clientHeight;
    var heightShift = getColumnHeightShift(itemHeight, gutterHeight);
    column.height = column.height + heightShift;
  };

  _proto.setItemStyle = function setItemStyle(item, column) {
    item.top = column.height;
    item.left = column.left;
    item.horizontalGutterShift = column.horizontalGutterShift;
  };

  _proto.setGridHeight = function setGridHeight() {
    var gutterHeight = this.state.gutterHeight;

    var _getLongestColumn = getLongestColumn(this.columns),
        height = _getLongestColumn.height;

    this.gridHeight = height - gutterHeight;
  };

  _proto.applyChanges = function applyChanges() {
    this.setState({
      height: this.gridHeight + "px",
      items: this.items
    });
  };

  _proto.updateGridStyles = function updateGridStyles(gridWidth) {
    var _getStyle = getStyle(this.props.styleStrategies),
        gutterHeight = _getStyle.gutterHeight,
        gutterWidth = _getStyle.gutterWidth,
        numberOfColumns = _getStyle.numberOfColumns;

    var columnWidth = getColumnWidth(numberOfColumns);
    this.setState({
      columnWidth: columnWidth,
      gridWidth: gridWidth,
      gutterHeight: gutterHeight,
      gutterWidth: gutterWidth,
      numberOfColumns: numberOfColumns
    });
  };

  _proto.renderChildren = function renderChildren() {
    this.clearItems();
    return this.props.children.map(this.renderChild);
  };

  _proto.clearItems = function clearItems() {
    this.items = {};
  };

  _proto.renderChild = function renderChild(child, index) {
    var _this2 = this;

    var _this$state2 = this.state,
        columnWidth = _this$state2.columnWidth,
        gridWidth = _this$state2.gridWidth,
        gutterWidth = _this$state2.gutterWidth,
        items = _this$state2.items,
        numberOfColumns = _this$state2.numberOfColumns;
    var _this$props = this.props,
        itemClassName = _this$props.itemClassName,
        transition = _this$props.transition;

    var registerItem = function registerItem(element) {
      _this2.items[index] = {
        element: element
      };
    };

    return React.createElement(FluidGridItem, {
      className: itemClassName,
      columnWidth: columnWidth,
      gridWidth: gridWidth,
      gutterWidth: gutterWidth,
      item: items[index],
      index: index,
      key: index,
      numberOfColumns: numberOfColumns,
      onHeightChange: this.updateLayout,
      registerItem: registerItem,
      transition: transition
    }, child);
  };

  _proto.render = function render() {
    var className = this.props.className;
    var _this$state3 = this.state,
        height = _this$state3.height,
        overflow = _this$state3.overflow,
        position = _this$state3.position;
    var style = {
      height: height,
      overflow: overflow,
      position: position
    };
    return React.createElement("div", {
      className: className,
      style: style
    }, React.createElement(ResizeObservingContainer, {
      onWidthChange: this.updateGridStyles
    }, this.renderChildren()));
  };

  _inheritsLoose(FluidGrid, _React$Component);

  return FluidGrid;
}(React.Component);

var styleStrategyShape = {
  mediaQuery: PropTypes.string.isRequired,
  style: PropTypes.shape({
    numberOfColumns: PropTypes.number.isRequired,
    gutterHeight: PropTypes.number.isRequired,
    gutterWidth: PropTypes.number.isRequired
  })
};
FluidGrid.propTypes = {
  className: PropTypes.string,
  children: PropTypes.node,
  itemClassName: PropTypes.string,
  styleStrategies: PropTypes.arrayOf(PropTypes.shape(styleStrategyShape)),
  transition: PropTypes.string
};
FluidGrid.defaultProps = {
  className: '',
  itemClassName: '',
  styleStrategies: defaultStyleStrategies
};

exports.default = FluidGrid;