1 | define(["dojo/_base/lang", "dojo/_base/array", "dojo/_base/declare", "dojo/query", "dojo/_base/html", |
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2 | "dojo/_base/connect", "dojo/_base/Color", "./Legend", "dijit/form/CheckBox", "../action2d/Highlight", |
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3 | "dojox/lang/functional", "dojox/gfx/fx", "dojo/keys", "dojo/_base/event", "dojo/dom-construct", |
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4 | "dojo/dom-prop"], |
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5 | function(lang, arrayUtil, declare, query, html, hub, Color, Legend, CheckBox, |
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6 | Highlight, df, fx, keys, event, dom, domProp){ |
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7 | /*===== |
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8 | var Legend = dojox.charting.widget.Legend; |
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9 | =====*/ |
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10 | var FocusManager = declare(null, { |
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11 | // summary: |
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12 | // It will take legend as a tab stop, and using |
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13 | // cursor keys to navigate labels within the legend. |
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14 | constructor: function(legend){ |
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15 | this.legend = legend; |
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16 | this.index = 0; |
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17 | this.horizontalLength = this._getHrizontalLength(); |
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18 | arrayUtil.forEach(legend.legends, function(item, i){ |
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19 | if(i > 0){ |
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20 | query("input", item).attr("tabindex", -1); |
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21 | } |
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22 | }); |
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23 | this.firstLabel = query("input", legend.legends[0])[0]; |
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24 | hub.connect(this.firstLabel, "focus", this, function(){this.legend.active = true;}); |
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25 | hub.connect(this.legend.domNode, "keydown", this, "_onKeyEvent"); |
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26 | }, |
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27 | _getHrizontalLength: function(){ |
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28 | var horizontal = this.legend.horizontal; |
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29 | if(typeof horizontal == "number"){ |
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30 | return Math.min(horizontal, this.legend.legends.length); |
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31 | }else if(!horizontal){ |
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32 | return 1; |
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33 | }else{ |
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34 | return this.legend.legends.length; |
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35 | } |
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36 | }, |
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37 | _onKeyEvent: function(e){ |
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38 | // if not focused |
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39 | if(!this.legend.active){ |
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40 | return; |
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41 | } |
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42 | // lose focus |
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43 | if(e.keyCode == keys.TAB){ |
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44 | this.legend.active = false; |
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45 | return; |
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46 | } |
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47 | // handle with arrow keys |
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48 | var max = this.legend.legends.length; |
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49 | switch(e.keyCode){ |
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50 | case keys.LEFT_ARROW: |
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51 | this.index--; |
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52 | if(this.index < 0){ |
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53 | this.index += max; |
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54 | } |
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55 | break; |
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56 | case keys.RIGHT_ARROW: |
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57 | this.index++; |
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58 | if(this.index >= max){ |
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59 | this.index -= max; |
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60 | } |
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61 | break; |
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62 | case keys.UP_ARROW: |
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63 | if(this.index - this.horizontalLength >= 0){ |
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64 | this.index -= this.horizontalLength; |
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65 | } |
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66 | break; |
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67 | case keys.DOWN_ARROW: |
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68 | if(this.index + this.horizontalLength < max){ |
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69 | this.index += this.horizontalLength; |
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70 | } |
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71 | break; |
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72 | default: |
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73 | return; |
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74 | } |
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75 | this._moveToFocus(); |
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76 | Event.stop(e); |
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77 | }, |
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78 | _moveToFocus: function(){ |
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79 | query("input", this.legend.legends[this.index])[0].focus(); |
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80 | } |
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81 | }); |
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82 | |
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83 | declare("dojox.charting.widget.SelectableLegend", Legend, { |
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84 | // summary: |
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85 | // An enhanced chart legend supporting interactive events on data series |
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86 | |
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87 | // theme component |
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88 | outline: false, // outline of vanished data series |
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89 | transitionFill: null, // fill of deselected data series |
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90 | transitionStroke: null, // stroke of deselected data series |
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91 | |
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92 | postCreate: function(){ |
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93 | this.legends = []; |
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94 | this.legendAnim = {}; |
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95 | this.inherited(arguments); |
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96 | }, |
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97 | refresh: function(){ |
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98 | this.legends = []; |
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99 | this.inherited(arguments); |
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100 | this._applyEvents(); |
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101 | new FocusManager(this); |
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102 | }, |
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103 | _addLabel: function(dyn, label){ |
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104 | this.inherited(arguments); |
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105 | // create checkbox |
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106 | var legendNodes = query("td", this.legendBody); |
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107 | var currentLegendNode = legendNodes[legendNodes.length - 1]; |
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108 | this.legends.push(currentLegendNode); |
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109 | var checkbox = new CheckBox({checked: true}); |
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110 | dom.place(checkbox.domNode, currentLegendNode, "first"); |
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111 | // connect checkbox and existed label |
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112 | var label = query("label", currentLegendNode)[0]; |
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113 | domProp.set(label, "for", checkbox.id); |
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114 | }, |
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115 | _applyEvents: function(){ |
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116 | // summary: |
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117 | // Apply click-event on checkbox and hover-event on legend icon, |
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118 | // highlight data series or toggle it. |
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119 | // if the chart has not yet been refreshed it will crash here (targetData.group == null) |
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120 | if(this.chart.dirty){ |
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121 | return; |
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122 | } |
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123 | arrayUtil.forEach(this.legends, function(legend, i){ |
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124 | var targetData, shapes = [], plotName, seriesName; |
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125 | if(this._isPie()){ |
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126 | targetData = this.chart.stack[0]; |
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127 | shapes.push(targetData.group.children[i]); |
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128 | plotName = targetData.name; |
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129 | seriesName = this.chart.series[0].name; |
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130 | }else{ |
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131 | targetData = this.chart.series[i]; |
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132 | shapes = targetData.group.children; |
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133 | plotName = targetData.plot; |
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134 | seriesName = targetData.name; |
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135 | } |
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136 | var originalDyn = { |
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137 | fills : df.map(shapes, "x.getFill()"), |
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138 | strokes: df.map(shapes, "x.getStroke()") |
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139 | }; |
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140 | // toggle action |
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141 | var legendCheckBox = query(".dijitCheckBox", legend)[0]; |
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142 | hub.connect(legendCheckBox, "onclick", this, function(e){ |
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143 | this._toggle(shapes, i, legend.vanished, originalDyn, seriesName, plotName); |
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144 | legend.vanished = !legend.vanished; |
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145 | e.stopPropagation(); |
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146 | }); |
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147 | |
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148 | // highlight action |
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149 | var legendIcon = query(".dojoxLegendIcon", legend)[0], |
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150 | iconShape = this._getFilledShape(this._surfaces[i].children); |
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151 | arrayUtil.forEach(["onmouseenter", "onmouseleave"], function(event){ |
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152 | hub.connect(legendIcon, event, this, function(e){ |
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153 | this._highlight(e, iconShape, shapes, i, legend.vanished, originalDyn, seriesName, plotName); |
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154 | }); |
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155 | }, this); |
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156 | },this); |
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157 | }, |
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158 | _toggle: function(shapes, index, isOff, dyn, seriesName, plotName){ |
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159 | arrayUtil.forEach(shapes, function(shape, i){ |
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160 | var startFill = dyn.fills[i], |
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161 | endFill = this._getTransitionFill(plotName), |
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162 | startStroke = dyn.strokes[i], |
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163 | endStroke = this.transitionStroke; |
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164 | if(startFill){ |
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165 | if(endFill && (typeof startFill == "string" || startFill instanceof Color)){ |
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166 | fx.animateFill({ |
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167 | shape: shape, |
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168 | color: { |
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169 | start: isOff ? endFill : startFill, |
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170 | end: isOff ? startFill : endFill |
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171 | } |
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172 | }).play(); |
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173 | }else{ |
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174 | shape.setFill(isOff ? startFill : endFill); |
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175 | } |
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176 | } |
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177 | if(startStroke && !this.outline){ |
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178 | shape.setStroke(isOff ? startStroke : endStroke); |
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179 | } |
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180 | }, this); |
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181 | }, |
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182 | _highlight: function(e, iconShape, shapes, index, isOff, dyn, seriesName, plotName){ |
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183 | if(!isOff){ |
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184 | var anim = this._getAnim(plotName), |
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185 | isPie = this._isPie(), |
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186 | type = formatEventType(e.type); |
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187 | // highlight the label icon, |
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188 | var label = { |
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189 | shape: iconShape, |
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190 | index: isPie ? "legend" + index : "legend", |
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191 | run: {name: seriesName}, |
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192 | type: type |
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193 | }; |
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194 | anim.process(label); |
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195 | // highlight the data items |
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196 | arrayUtil.forEach(shapes, function(shape, i){ |
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197 | shape.setFill(dyn.fills[i]); |
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198 | var o = { |
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199 | shape: shape, |
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200 | index: isPie ? index : i, |
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201 | run: {name: seriesName}, |
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202 | type: type |
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203 | }; |
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204 | anim.duration = 100; |
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205 | anim.process(o); |
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206 | }); |
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207 | } |
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208 | }, |
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209 | _getAnim: function(plotName){ |
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210 | if(!this.legendAnim[plotName]){ |
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211 | this.legendAnim[plotName] = new Highlight(this.chart, plotName); |
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212 | } |
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213 | return this.legendAnim[plotName]; |
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214 | }, |
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215 | _getTransitionFill: function(plotName){ |
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216 | // Since series of stacked charts all start from the base line, |
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217 | // fill the "front" series with plotarea color to make it disappear . |
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218 | if(this.chart.stack[this.chart.plots[plotName]].declaredClass.indexOf("dojox.charting.plot2d.Stacked") != -1){ |
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219 | return this.chart.theme.plotarea.fill; |
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220 | } |
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221 | return null; |
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222 | }, |
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223 | _getFilledShape: function(shapes){ |
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224 | // summary: |
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225 | // Get filled shape in legend icon which would be highlighted when hovered |
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226 | var i = 0; |
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227 | while(shapes[i]){ |
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228 | if(shapes[i].getFill())return shapes[i]; |
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229 | i++; |
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230 | } |
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231 | }, |
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232 | _isPie: function(){ |
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233 | return this.chart.stack[0].declaredClass == "dojox.charting.plot2d.Pie"; |
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234 | } |
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235 | }); |
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236 | |
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237 | function formatEventType(type){ |
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238 | if(type == "mouseenter")return "onmouseover"; |
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239 | if(type == "mouseleave")return "onmouseout"; |
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240 | return "on" + type; |
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241 | } |
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242 | |
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243 | return dojox.charting.widget.SelectableLegend; |
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244 | }); |
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