87 lines
3.1 KiB
JavaScript
87 lines
3.1 KiB
JavaScript
'use strict';
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exports.__esModule = true;
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exports.getBreakpointFromWidth = getBreakpointFromWidth;
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exports.getColsFromBreakpoint = getColsFromBreakpoint;
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exports.findOrGenerateResponsiveLayout = findOrGenerateResponsiveLayout;
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exports.sortBreakpoints = sortBreakpoints;
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var _utils = require('./utils');
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/**
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* Given a width, find the highest breakpoint that matches is valid for it (width > breakpoint).
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*
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* @param {Object} breakpoints Breakpoints object (e.g. {lg: 1200, md: 960, ...})
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* @param {Number} width Screen width.
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* @return {String} Highest breakpoint that is less than width.
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*/
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function getBreakpointFromWidth(breakpoints, width) {
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var sorted = sortBreakpoints(breakpoints);
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var matching = sorted[0];
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for (var i = 1, len = sorted.length; i < len; i++) {
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var breakpointName = sorted[i];
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if (width > breakpoints[breakpointName]) matching = breakpointName;
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}
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return matching;
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}
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/**
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* Given a breakpoint, get the # of cols set for it.
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* @param {String} breakpoint Breakpoint name.
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* @param {Object} cols Map of breakpoints to cols.
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* @return {Number} Number of cols.
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*/
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function getColsFromBreakpoint(breakpoint, cols) {
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if (!cols[breakpoint]) {
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throw new Error("ResponsiveReactGridLayout: `cols` entry for breakpoint " + breakpoint + " is missing!");
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}
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return cols[breakpoint];
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}
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/**
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* Given existing layouts and a new breakpoint, find or generate a new layout.
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*
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* This finds the layout above the new one and generates from it, if it exists.
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*
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* @param {Object} layouts Existing layouts.
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* @param {Array} breakpoints All breakpoints.
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* @param {String} breakpoint New breakpoint.
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* @param {String} breakpoint Last breakpoint (for fallback).
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* @param {Number} cols Column count at new breakpoint.
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* @param {Boolean} verticalCompact Whether or not to compact the layout
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* vertically.
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* @return {Array} New layout.
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*/
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function findOrGenerateResponsiveLayout(layouts, breakpoints, breakpoint, lastBreakpoint, cols, compactType) {
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// If it already exists, just return it.
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if (layouts[breakpoint]) return (0, _utils.cloneLayout)(layouts[breakpoint]);
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// Find or generate the next layout
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var layout = layouts[lastBreakpoint];
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var breakpointsSorted = sortBreakpoints(breakpoints);
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var breakpointsAbove = breakpointsSorted.slice(breakpointsSorted.indexOf(breakpoint));
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for (var i = 0, len = breakpointsAbove.length; i < len; i++) {
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var b = breakpointsAbove[i];
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if (layouts[b]) {
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layout = layouts[b];
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break;
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}
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}
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layout = (0, _utils.cloneLayout)(layout || []); // clone layout so we don't modify existing items
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return (0, _utils.compact)((0, _utils.correctBounds)(layout, { cols: cols }), compactType, cols);
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}
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/**
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* Given breakpoints, return an array of breakpoints sorted by width. This is usually
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* e.g. ['xxs', 'xs', 'sm', ...]
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*
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* @param {Object} breakpoints Key/value pair of breakpoint names to widths.
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* @return {Array} Sorted breakpoints.
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*/
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function sortBreakpoints(breakpoints) {
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var keys = Object.keys(breakpoints);
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return keys.sort(function (a, b) {
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return breakpoints[a] - breakpoints[b];
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});
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} |