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/event", |
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6 | "dojo/_base/window", |
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7 | "dojo/dom-class", |
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8 | "dijit/_Contained", |
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9 | "dijit/_WidgetBase", |
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10 | "./sniff" |
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11 | ], function(array, connect, declare, event, win, domClass, Contained, WidgetBase, has){ |
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12 | |
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13 | /*===== |
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14 | Contained = dijit._Contained; |
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15 | WidgetBase = dijit._WidgetBase; |
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16 | =====*/ |
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17 | |
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18 | // module: |
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19 | // dojox/mobile/Switch |
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20 | // summary: |
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21 | // A toggle switch with a sliding knob. |
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22 | |
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23 | return declare("dojox.mobile.Switch", [WidgetBase, Contained],{ |
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24 | // summary: |
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25 | // A toggle switch with a sliding knob. |
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26 | // description: |
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27 | // Switch is a toggle switch with a sliding knob. You can either |
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28 | // tap or slide the knob to toggle the switch. The onStateChanged |
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29 | // handler is called when the switch is manipulated. |
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30 | |
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31 | // value: String |
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32 | // The initial state of the switch. "on" or "off". The default |
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33 | // value is "on". |
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34 | value: "on", |
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35 | |
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36 | // name: String |
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37 | // A name for a hidden input field, which holds the current value. |
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38 | name: "", |
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39 | |
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40 | // leftLabel: String |
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41 | // The left-side label of the switch. |
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42 | leftLabel: "ON", |
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43 | |
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44 | // rightLabel: String |
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45 | // The right-side label of the switch. |
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46 | rightLabel: "OFF", |
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47 | |
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48 | /* internal properties */ |
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49 | _width: 53, |
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50 | |
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51 | buildRendering: function(){ |
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52 | this.domNode = win.doc.createElement("DIV"); |
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53 | var c = (this.srcNodeRef && this.srcNodeRef.className) || this.className || this["class"]; |
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54 | this._swClass = (c || "").replace(/ .*/,""); |
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55 | this.domNode.className = "mblSwitch"; |
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56 | var nameAttr = this.name ? " name=\"" + this.name + "\"" : ""; |
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57 | this.domNode.innerHTML = |
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58 | '<div class="mblSwitchInner">' |
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59 | + '<div class="mblSwitchBg mblSwitchBgLeft">' |
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60 | + '<div class="mblSwitchText mblSwitchTextLeft"></div>' |
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61 | + '</div>' |
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62 | + '<div class="mblSwitchBg mblSwitchBgRight">' |
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63 | + '<div class="mblSwitchText mblSwitchTextRight"></div>' |
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64 | + '</div>' |
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65 | + '<div class="mblSwitchKnob"></div>' |
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66 | + '<input type="hidden"'+nameAttr+'></div>' |
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67 | + '</div>'; |
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68 | var n = this.inner = this.domNode.firstChild; |
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69 | this.left = n.childNodes[0]; |
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70 | this.right = n.childNodes[1]; |
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71 | this.knob = n.childNodes[2]; |
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72 | this.input = n.childNodes[3]; |
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73 | }, |
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74 | |
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75 | postCreate: function(){ |
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76 | this.connect(this.domNode, "onclick", "onClick"); |
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77 | this.connect(this.domNode, has('touch') ? "touchstart" : "onmousedown", "onTouchStart"); |
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78 | this._initialValue = this.value; // for reset() |
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79 | }, |
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80 | |
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81 | _changeState: function(/*String*/state, /*Boolean*/anim){ |
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82 | var on = (state === "on"); |
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83 | this.left.style.display = ""; |
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84 | this.right.style.display = ""; |
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85 | this.inner.style.left = ""; |
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86 | if(anim){ |
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87 | domClass.add(this.domNode, "mblSwitchAnimation"); |
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88 | } |
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89 | domClass.remove(this.domNode, on ? "mblSwitchOff" : "mblSwitchOn"); |
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90 | domClass.add(this.domNode, on ? "mblSwitchOn" : "mblSwitchOff"); |
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91 | |
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92 | var _this = this; |
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93 | setTimeout(function(){ |
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94 | _this.left.style.display = on ? "" : "none"; |
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95 | _this.right.style.display = !on ? "" : "none"; |
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96 | domClass.remove(_this.domNode, "mblSwitchAnimation"); |
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97 | }, anim ? 300 : 0); |
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98 | }, |
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99 | |
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100 | startup: function(){ |
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101 | if(this._swClass.indexOf("Round") != -1){ |
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102 | var r = Math.round(this.domNode.offsetHeight / 2); |
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103 | this.createRoundMask(this._swClass, r, this.domNode.offsetWidth); |
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104 | } |
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105 | }, |
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106 | |
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107 | createRoundMask: function(className, r, w){ |
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108 | if(!has("webkit") || !className){ return; } |
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109 | if(!this._createdMasks){ this._createdMasks = []; } |
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110 | if(this._createdMasks[className]){ return; } |
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111 | this._createdMasks[className] = 1; |
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112 | |
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113 | var ctx = win.doc.getCSSCanvasContext("2d", className+"Mask", w, 100); |
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114 | ctx.fillStyle = "#000000"; |
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115 | ctx.beginPath(); |
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116 | ctx.moveTo(r, 0); |
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117 | ctx.arcTo(0, 0, 0, 2*r, r); |
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118 | ctx.arcTo(0, 2*r, r, 2*r, r); |
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119 | ctx.lineTo(w - r, 2*r); |
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120 | ctx.arcTo(w, 2*r, w, r, r); |
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121 | ctx.arcTo(w, 0, w - r, 0, r); |
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122 | ctx.closePath(); |
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123 | ctx.fill(); |
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124 | }, |
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125 | |
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126 | onClick: function(e){ |
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127 | if(this._moved){ return; } |
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128 | this.value = this.input.value = (this.value == "on") ? "off" : "on"; |
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129 | this._changeState(this.value, true); |
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130 | this.onStateChanged(this.value); |
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131 | }, |
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132 | |
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133 | onTouchStart: function(e){ |
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134 | // summary: |
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135 | // Internal function to handle touchStart events. |
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136 | this._moved = false; |
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137 | this.innerStartX = this.inner.offsetLeft; |
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138 | if(!this._conn){ |
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139 | this._conn = []; |
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140 | this._conn.push(connect.connect(this.inner, has('touch') ? "touchmove" : "onmousemove", this, "onTouchMove")); |
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141 | this._conn.push(connect.connect(this.inner, has('touch') ? "touchend" : "onmouseup", this, "onTouchEnd")); |
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142 | } |
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143 | this.touchStartX = e.touches ? e.touches[0].pageX : e.clientX; |
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144 | this.left.style.display = ""; |
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145 | this.right.style.display = ""; |
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146 | event.stop(e); |
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147 | }, |
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148 | |
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149 | onTouchMove: function(e){ |
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150 | // summary: |
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151 | // Internal function to handle touchMove events. |
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152 | e.preventDefault(); |
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153 | var dx; |
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154 | if(e.targetTouches){ |
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155 | if(e.targetTouches.length != 1){ return false; } |
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156 | dx = e.targetTouches[0].clientX - this.touchStartX; |
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157 | }else{ |
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158 | dx = e.clientX - this.touchStartX; |
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159 | } |
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160 | var pos = this.innerStartX + dx; |
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161 | var d = 10; |
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162 | if(pos <= -(this._width-d)){ pos = -this._width; } |
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163 | if(pos >= -d){ pos = 0; } |
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164 | this.inner.style.left = pos + "px"; |
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165 | if(Math.abs(dx) > d){ |
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166 | this._moved = true; |
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167 | } |
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168 | }, |
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169 | |
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170 | onTouchEnd: function(e){ |
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171 | // summary: |
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172 | // Internal function to handle touchEnd events. |
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173 | array.forEach(this._conn, connect.disconnect); |
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174 | this._conn = null; |
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175 | if(this.innerStartX == this.inner.offsetLeft){ |
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176 | if(has('touch')){ |
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177 | var ev = win.doc.createEvent("MouseEvents"); |
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178 | ev.initEvent("click", true, true); |
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179 | this.inner.dispatchEvent(ev); |
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180 | } |
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181 | return; |
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182 | } |
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183 | var newState = (this.inner.offsetLeft < -(this._width/2)) ? "off" : "on"; |
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184 | this._changeState(newState, true); |
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185 | if(newState != this.value){ |
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186 | this.value = this.input.value = newState; |
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187 | this.onStateChanged(newState); |
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188 | } |
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189 | }, |
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190 | |
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191 | onStateChanged: function(/*String*/newState){ |
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192 | // summary: |
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193 | // Stub function to connect to from your application. |
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194 | // description: |
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195 | // Called when the state has been changed. |
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196 | }, |
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197 | |
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198 | _setValueAttr: function(/*String*/value){ |
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199 | this._changeState(value, false); |
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200 | if(this.value != value){ |
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201 | this.onStateChanged(value); |
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202 | } |
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203 | this.value = this.input.value = value; |
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204 | }, |
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205 | |
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206 | _setLeftLabelAttr: function(/*String*/label){ |
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207 | this.leftLabel = label; |
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208 | this.left.firstChild.innerHTML = this._cv ? this._cv(label) : label; |
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209 | }, |
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210 | |
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211 | _setRightLabelAttr: function(/*String*/label){ |
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212 | this.rightLabel = label; |
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213 | this.right.firstChild.innerHTML = this._cv ? this._cv(label) : label; |
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214 | }, |
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215 | |
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216 | reset: function(){ |
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217 | // summary: |
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218 | // Reset the widget's value to what it was at initialization time |
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219 | this.set("value", this._initialValue); |
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220 | } |
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221 | }); |
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222 | }); |
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