1 | define([ |
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2 | "dojo/_base/array", |
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3 | "dojo/_base/connect", |
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4 | "dojo/_base/declare", |
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5 | "dojo/_base/lang", |
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6 | "dojo/_base/window", |
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7 | "dojo/sniff", |
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8 | "dojo/dom-class", |
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9 | "dojo/dom-construct", |
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10 | "dojo/dom-geometry", |
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11 | "dojo/dom-style", |
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12 | "dojo/keys", |
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13 | "dojo/touch", |
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14 | "dijit/_WidgetBase", |
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15 | "dijit/form/_FormValueMixin" |
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16 | ], |
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17 | function(array, connect, declare, lang, win, has, domClass, domConstruct, domGeometry, domStyle, keys, touch, WidgetBase, FormValueMixin){ |
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18 | |
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19 | return declare("dojox.mobile.Slider", [WidgetBase, FormValueMixin], { |
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20 | // summary: |
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21 | // A non-templated Slider widget similar to the HTML5 INPUT type=range. |
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22 | |
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23 | // value: [const] Number |
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24 | // The current slider value. |
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25 | value: 0, |
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26 | |
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27 | // min: [const] Number |
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28 | // The first value the slider can be set to. |
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29 | min: 0, |
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30 | |
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31 | // max: [const] Number |
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32 | // The last value the slider can be set to. |
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33 | max: 100, |
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34 | |
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35 | // step: [const] Number |
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36 | // The delta from 1 value to another. |
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37 | // This causes the slider handle to snap/jump to the closest possible value. |
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38 | // A value of 0 means continuous (as much as allowed by pixel resolution). |
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39 | step: 1, |
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40 | |
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41 | // baseClass: String |
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42 | // The name of the CSS class of this widget. |
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43 | baseClass: "mblSlider", |
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44 | |
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45 | // flip: [const] Boolean |
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46 | // Specifies if the slider should change its default: ascending <--> descending. |
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47 | flip: false, |
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48 | |
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49 | // orientation: [const] String |
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50 | // The slider direction. |
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51 | // |
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52 | // - "H": horizontal |
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53 | // - "V": vertical |
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54 | // - "auto": use width/height comparison at instantiation time (default is "H" if width/height are 0) |
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55 | orientation: "auto", |
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56 | |
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57 | // halo: Number |
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58 | // Size of the boundary that extends beyond the edges of the slider |
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59 | // to make it easier to touch. |
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60 | halo: "8pt", |
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61 | |
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62 | buildRendering: function(){ |
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63 | if(!this.templateString){ // true if this widget is not templated |
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64 | this.focusNode = this.domNode = domConstruct.create("div", {}); |
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65 | this.valueNode = domConstruct.create("input", (this.srcNodeRef && this.srcNodeRef.name) ? { type: "hidden", name: this.srcNodeRef.name } : { type: "hidden" }, this.domNode, "last"); |
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66 | var relativeParent = domConstruct.create("div", { style: { position:"relative", height:"100%", width:"100%" } }, this.domNode, "last"); |
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67 | this.progressBar = domConstruct.create("div", { style:{ position:"absolute" }, "class":"mblSliderProgressBar" }, relativeParent, "last"); |
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68 | this.touchBox = domConstruct.create("div", { style:{ position:"absolute" }, "class":"mblSliderTouchBox" }, relativeParent, "last"); |
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69 | this.handle = domConstruct.create("div", { style:{ position:"absolute" }, "class":"mblSliderHandle" }, relativeParent, "last"); |
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70 | } |
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71 | this.inherited(arguments); |
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72 | // prevent browser scrolling on IE10 (evt.preventDefault() is not enough) |
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73 | if(typeof this.domNode.style.msTouchAction != "undefined"){ |
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74 | this.domNode.style.msTouchAction = "none"; |
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75 | } |
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76 | }, |
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77 | |
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78 | _setValueAttr: function(/*Number*/ value, /*Boolean?*/ priorityChange){ |
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79 | // summary: |
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80 | // Hook such that set('value', value) works. |
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81 | // tags: |
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82 | // private |
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83 | value = Math.max(Math.min(value, this.max), this.min); |
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84 | var fromPercent = (this.value - this.min) * 100 / (this.max - this.min); |
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85 | this.valueNode.value = value; |
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86 | this.inherited(arguments); |
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87 | if(!this._started){ return; } // don't move images until all the properties are set |
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88 | this.focusNode.setAttribute("aria-valuenow", value); |
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89 | var toPercent = (value - this.min) * 100 / (this.max - this.min); |
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90 | // now perform visual slide |
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91 | var horizontal = this.orientation != "V"; |
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92 | if(priorityChange === true){ |
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93 | domClass.add(this.handle, "mblSliderTransition"); |
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94 | domClass.add(this.progressBar, "mblSliderTransition"); |
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95 | }else{ |
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96 | domClass.remove(this.handle, "mblSliderTransition"); |
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97 | domClass.remove(this.progressBar, "mblSliderTransition"); |
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98 | } |
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99 | domStyle.set(this.handle, this._attrs.handleLeft, (this._reversed ? (100-toPercent) : toPercent) + "%"); |
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100 | domStyle.set(this.progressBar, this._attrs.width, toPercent + "%"); |
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101 | }, |
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102 | |
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103 | postCreate: function(){ |
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104 | this.inherited(arguments); |
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105 | |
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106 | function beginDrag(e){ |
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107 | function getEventData(e){ |
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108 | point = isMouse ? e[this._attrs.pageX] : (e.touches ? e.touches[0][this._attrs.pageX] : e[this._attrs.clientX]); |
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109 | pixelValue = point - startPixel; |
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110 | pixelValue = Math.min(Math.max(pixelValue, 0), maxPixels); |
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111 | var discreteValues = this.step ? ((this.max - this.min) / this.step) : maxPixels; |
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112 | if(discreteValues <= 1 || discreteValues == Infinity ){ discreteValues = maxPixels; } |
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113 | var wholeIncrements = Math.round(pixelValue * discreteValues / maxPixels); |
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114 | value = (this.max - this.min) * wholeIncrements / discreteValues; |
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115 | value = this._reversed ? (this.max - value) : (this.min + value); |
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116 | } |
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117 | function continueDrag(e){ |
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118 | e.preventDefault(); |
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119 | lang.hitch(this, getEventData)(e); |
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120 | this.set('value', value, false); |
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121 | } |
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122 | |
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123 | function endDrag(e){ |
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124 | e.preventDefault(); |
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125 | array.forEach(actionHandles, lang.hitch(this, "disconnect")); |
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126 | actionHandles = []; |
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127 | this.set('value', this.value, true); |
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128 | } |
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129 | |
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130 | e.preventDefault(); |
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131 | var isMouse = e.type == "mousedown"; |
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132 | var box = domGeometry.position(node, false); // can't use true since the added docScroll and the returned x are body-zoom incompatibile |
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133 | var bodyZoom = (has("ie") || has("trident") > 6) ? 1 : (domStyle.get(win.body(), "zoom") || 1); |
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134 | if(isNaN(bodyZoom)){ bodyZoom = 1; } |
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135 | var nodeZoom = (has("ie") || has("trident") > 6) ? 1 : (domStyle.get(node, "zoom") || 1); |
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136 | if(isNaN(nodeZoom)){ nodeZoom = 1; } |
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137 | var startPixel = box[this._attrs.x] * nodeZoom * bodyZoom + domGeometry.docScroll()[this._attrs.x]; |
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138 | var maxPixels = box[this._attrs.w] * nodeZoom * bodyZoom; |
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139 | lang.hitch(this, getEventData)(e); |
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140 | if(e.target == this.touchBox){ |
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141 | this.set('value', value, true); |
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142 | } |
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143 | array.forEach(actionHandles, connect.disconnect); |
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144 | var root = win.doc.documentElement; |
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145 | var actionHandles = [ |
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146 | this.connect(root, touch.move, continueDrag), |
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147 | this.connect(root, touch.release, endDrag) |
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148 | ]; |
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149 | } |
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150 | |
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151 | function keyPress(/*Event*/ e){ |
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152 | if(this.disabled || this.readOnly || e.altKey || e.ctrlKey || e.metaKey){ return; } |
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153 | var step = this.step, |
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154 | multiplier = 1, |
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155 | newValue; |
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156 | switch(e.keyCode){ |
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157 | case keys.HOME: |
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158 | newValue = this.min; |
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159 | break; |
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160 | case keys.END: |
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161 | newValue = this.max; |
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162 | break; |
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163 | case keys.RIGHT_ARROW: |
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164 | multiplier = -1; |
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165 | case keys.LEFT_ARROW: |
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166 | newValue = this.value + multiplier * ((flip && horizontal) ? step : -step); |
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167 | break; |
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168 | case keys.DOWN_ARROW: |
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169 | multiplier = -1; |
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170 | case keys.UP_ARROW: |
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171 | newValue = this.value + multiplier * ((!flip || horizontal) ? step : -step); |
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172 | break; |
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173 | default: |
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174 | return; |
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175 | } |
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176 | e.preventDefault(); |
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177 | this._setValueAttr(newValue, false); |
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178 | } |
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179 | |
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180 | function keyUp(/*Event*/ e){ |
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181 | if(this.disabled || this.readOnly || e.altKey || e.ctrlKey || e.metaKey){ return; } |
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182 | this._setValueAttr(this.value, true); |
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183 | } |
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184 | |
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185 | var point, pixelValue, value, |
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186 | node = this.domNode; |
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187 | if(this.orientation == "auto"){ |
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188 | this.orientation = node.offsetHeight <= node.offsetWidth ? "H" : "V"; |
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189 | } |
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190 | // add V or H suffix to baseClass for styling purposes |
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191 | domClass.add(this.domNode, array.map(this.baseClass.split(" "), lang.hitch(this, function(c){ return c+this.orientation; }))); |
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192 | var horizontal = this.orientation != "V", |
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193 | ltr = horizontal ? this.isLeftToRight() : false, |
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194 | flip = !!this.flip; |
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195 | // _reversed is complicated since you can have flipped right-to-left and vertical is upside down by default |
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196 | this._reversed = !((horizontal && ((ltr && !flip) || (!ltr && flip))) || (!horizontal && flip)); |
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197 | this._attrs = horizontal ? { x:'x', w:'w', l:'l', r:'r', pageX:'pageX', clientX:'clientX', handleLeft:"left", left:this._reversed ? "right" : "left", width:"width" } : { x:'y', w:'h', l:'t', r:'b', pageX:'pageY', clientX:'clientY', handleLeft:"top", left:this._reversed ? "bottom" : "top", width:"height" }; |
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198 | this.progressBar.style[this._attrs.left] = "0px"; |
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199 | this.connect(this.touchBox, touch.press, beginDrag); |
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200 | this.connect(this.handle, touch.press, beginDrag); |
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201 | this.connect(this.domNode, "onkeypress", keyPress); // for desktop a11y |
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202 | this.connect(this.domNode, "onkeyup", keyUp); // fire onChange on desktop |
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203 | this.startup(); |
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204 | this.set('value', this.value); |
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205 | } |
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206 | }); |
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207 | }); |
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