| 提交 | 用户 | 时间 | ||
| 1ac2bc | 1 | /** |
| 懒 | 2 | * @license Highcharts JS v3.0.6 (2013-10-04) |
| 3 | * Plugin for displaying a message when there is no data visible in chart. | |
| 4 | * | |
| 5 | * (c) 2010-2013 Highsoft AS | |
| 6 | * Author: Øystein Moseng | |
| 7 | * | |
| 8 | * License: www.highcharts.com/license | |
| 9 | */ | |
| 10 | ||
| 11 | (function (H) { // docs | |
| 12 | ||
| 13 | var seriesTypes = H.seriesTypes, | |
| 14 | chartPrototype = H.Chart.prototype, | |
| 15 | defaultOptions = H.getOptions(), | |
| 16 | extend = H.extend; | |
| 17 | ||
| 18 | // Add language option | |
| 19 | extend(defaultOptions.lang, { | |
| 20 | noData: 'No data to display' | |
| 21 | }); | |
| 22 | ||
| 23 | // Add default display options for message | |
| 24 | defaultOptions.noData = { | |
| 25 | position: { | |
| 26 | x: 0, | |
| 27 | y: 0, | |
| 28 | align: 'center', | |
| 29 | verticalAlign: 'middle' | |
| 30 | }, | |
| 31 | attr: { | |
| 32 | }, | |
| 33 | style: { | |
| 34 | fontWeight: 'bold', | |
| 35 | fontSize: '12px', | |
| 36 | color: '#60606a' | |
| 37 | } | |
| 38 | }; | |
| 39 | ||
| 40 | /** | |
| 41 | * Define hasData functions for series. These return true if there are data points on this series within the plot area | |
| 42 | */ | |
| 43 | function hasDataPie() { | |
| 44 | return !!this.points.length; /* != 0 */ | |
| 45 | } | |
| 46 | ||
| 47 | seriesTypes.pie.prototype.hasData = hasDataPie; | |
| 48 | ||
| 49 | if (seriesTypes.gauge) { | |
| 50 | seriesTypes.gauge.prototype.hasData = hasDataPie; | |
| 51 | } | |
| 52 | ||
| 53 | if (seriesTypes.waterfall) { | |
| 54 | seriesTypes.waterfall.prototype.hasData = hasDataPie; | |
| 55 | } | |
| 56 | ||
| 57 | H.Series.prototype.hasData = function () { | |
| 58 | return this.dataMax !== undefined && this.dataMin !== undefined; | |
| 59 | }; | |
| 60 | ||
| 61 | /** | |
| 62 | * Display a no-data message. | |
| 63 | * | |
| 64 | * @param {String} str An optional message to show in place of the default one | |
| 65 | */ | |
| 66 | chartPrototype.showNoData = function (str) { | |
| 67 | var chart = this, | |
| 68 | options = chart.options, | |
| 69 | text = str || options.lang.noData, | |
| 70 | noDataOptions = options.noData; | |
| 71 | ||
| 72 | if (!chart.noDataLabel) { | |
| 73 | chart.noDataLabel = chart.renderer.label(text, 0, 0, null, null, null, null, null, 'no-data') | |
| 74 | .attr(noDataOptions.attr) | |
| 75 | .css(noDataOptions.style) | |
| 76 | .add(); | |
| 77 | chart.noDataLabel.align(extend(chart.noDataLabel.getBBox(), noDataOptions.position), false, 'plotBox'); | |
| 78 | } | |
| 79 | }; | |
| 80 | ||
| 81 | /** | |
| 82 | * Hide no-data message | |
| 83 | */ | |
| 84 | chartPrototype.hideNoData = function () { | |
| 85 | var chart = this; | |
| 86 | if (chart.noDataLabel) { | |
| 87 | chart.noDataLabel = chart.noDataLabel.destroy(); | |
| 88 | } | |
| 89 | }; | |
| 90 | ||
| 91 | /** | |
| 92 | * Returns true if there are data points within the plot area now | |
| 93 | */ | |
| 94 | chartPrototype.hasData = function () { | |
| 95 | var chart = this, | |
| 96 | series = chart.series, | |
| 97 | i = series.length; | |
| 98 | ||
| 99 | while (i--) { | |
| 100 | if (series[i].hasData() && !series[i].options.isInternal) { | |
| 101 | return true; | |
| 102 | } | |
| 103 | } | |
| 104 | ||
| 105 | return false; | |
| 106 | }; | |
| 107 | ||
| 108 | /** | |
| 109 | * Show no-data message if there is no data in sight. Otherwise, hide it. | |
| 110 | */ | |
| 111 | function handleNoData() { | |
| 112 | var chart = this; | |
| 113 | if (chart.hasData()) { | |
| 114 | chart.hideNoData(); | |
| 115 | } else { | |
| 116 | chart.showNoData(); | |
| 117 | } | |
| 118 | } | |
| 119 | ||
| 120 | /** | |
| 121 | * Add event listener to handle automatic display of no-data message | |
| 122 | */ | |
| 123 | chartPrototype.callbacks.push(function (chart) { | |
| 124 | H.addEvent(chart, 'load', handleNoData); | |
| 125 | H.addEvent(chart, 'redraw', handleNoData); | |
| 126 | }); | |
| 127 | ||
| 128 | }(Highcharts)); | |
