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| 1 <!-- | |
| 2 Copyright (c) 2014 The Polymer Project Authors. All rights reserved. | |
| 3 This code may only be used under the BSD style license found at http://polymer.g
ithub.io/LICENSE.txt | |
| 4 The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt | |
| 5 The complete set of contributors may be found at http://polymer.github.io/CONTRI
BUTORS.txt | |
| 6 Code distributed by Google as part of the polymer project is also | |
| 7 subject to an additional IP rights grant found at http://polymer.github.io/PATEN
TS.txt | |
| 8 --> | |
| 9 | |
| 10 <!-- | |
| 11 `paper-slider` allows user to select a value from a range of values by | |
| 12 moving the slider thumb. The interactive nature of the slider makes it a | |
| 13 great choice for settings that reflect intensity levels, such as volume, | |
| 14 brightness, or color saturation. | |
| 15 | |
| 16 Example: | |
| 17 | |
| 18 <paper-slider></paper-slider> | |
| 19 | |
| 20 Use `min` and `max` to specify the slider range. Default is 0 to 100. | |
| 21 | |
| 22 Example: | |
| 23 | |
| 24 <paper-slider min="10" max="200" value="110"></paper-slider> | |
| 25 | |
| 26 Styling slider: | |
| 27 | |
| 28 To change the slider progress bar color: | |
| 29 | |
| 30 paper-slider::shadow #sliderBar::shadow #activeProgress { | |
| 31 background-color: #0f9d58; | |
| 32 } | |
| 33 | |
| 34 To change the slider knob color: | |
| 35 | |
| 36 paper-slider::shadow #sliderKnobInner { | |
| 37 background-color: #0f9d58; | |
| 38 } | |
| 39 | |
| 40 To change the slider pin color: | |
| 41 | |
| 42 paper-slider::shadow #sliderKnobInner::before { | |
| 43 background-color: #0f9d58; | |
| 44 } | |
| 45 | |
| 46 To change the slider pin's value: | |
| 47 | |
| 48 paper-slider::shadow #sliderKnobInner::after { | |
| 49 color: #0f9d58 | |
| 50 } | |
| 51 | |
| 52 To change the slider secondary progress bar color: | |
| 53 | |
| 54 paper-slider::shadow #sliderBar::shadow #secondaryProgress { | |
| 55 background-color: #0f9d58; | |
| 56 } | |
| 57 | |
| 58 @group Paper Elements | |
| 59 @element paper-slider | |
| 60 @extends core-range | |
| 61 @homepage github.io | |
| 62 --> | |
| 63 | |
| 64 <link rel="import" href="../paper-progress/paper-progress.html"> | |
| 65 <link rel="import" href="../paper-input/paper-input.html"> | |
| 66 | |
| 67 <polymer-element name="paper-slider" extends="core-range" attributes="snaps pin
disabled secondaryProgress editable immediateValue"> | |
| 68 <template> | |
| 69 | |
| 70 <link rel="stylesheet" href="paper-slider.css"> | |
| 71 | |
| 72 <div id="sliderContainer" on-keydown="{{keydown}}"> | |
| 73 | |
| 74 <paper-progress id="sliderBar" aria-hidden="true" min="{{min}}" max="{{max}}
" value="{{immediateValue}}" secondaryProgress="{{secondaryProgress}}" | |
| 75 on-down="{{bardown}}" on-up="{{resetKnob}}" | |
| 76 on-trackstart="{{trackStart}}" on-trackx="{{trackx}}" on-trackend="{{tra
ckEnd}}"></paper-progress> | |
| 77 | |
| 78 <template if="{{snaps && !disabled}}"> | |
| 79 <div class="slider-markers" horizontal layout> | |
| 80 <template repeat="{{markers}}"> | |
| 81 <div flex class="slider-marker"></div> | |
| 82 </template> | |
| 83 </div> | |
| 84 </template> | |
| 85 | |
| 86 <div id="sliderKnob" class="{{ {pin : pin, snaps : snaps} | tokenList }}" | |
| 87 on-down="{{expandKnob}}" on-up="{{resetKnob}}" | |
| 88 on-trackstart="{{trackStart}}" on-trackx="{{trackx}}" on-trackend="{{tra
ckEnd}}" | |
| 89 on-transitionend="{{knobTransitionEnd}}" | |
| 90 role="slider" aria-valuenow="{{value}}" aria-valuemin="{{min}}" aria-val
uemax="{{max}}" | |
| 91 aria-valuetext="{{value}}" tabindex="0" | |
| 92 center-justified center horizontal layout> | |
| 93 | |
| 94 <div id="sliderKnobInner" value="{{immediateValue}}"></div> | |
| 95 | |
| 96 </div> | |
| 97 | |
| 98 </div> | |
| 99 | |
| 100 <template if="{{editable}}"> | |
| 101 <paper-input id="input" class="slider-input" value="{{immediateValue}}" vali
date="^[-+]?[0-9]*\.?[0-9]+$" disabled?="{{disabled}}" on-change="{{inputChange}
}"></paper-input> | |
| 102 </template> | |
| 103 | |
| 104 </template> | |
| 105 <script> | |
| 106 | |
| 107 Polymer('paper-slider', { | |
| 108 | |
| 109 /** | |
| 110 * Fired when the slider's value changes. | |
| 111 * | |
| 112 * @event change | |
| 113 */ | |
| 114 | |
| 115 /** | |
| 116 * Fired when the slider's value changes due to manual interaction. | |
| 117 * | |
| 118 * Changes to the slider's value due to changes in an underlying | |
| 119 * bound variable will not trigger this event. | |
| 120 * | |
| 121 * @event manual-change | |
| 122 */ | |
| 123 | |
| 124 /** | |
| 125 * If true, the slider thumb snaps to tick marks evenly spaced based | |
| 126 * on the `step` property value. | |
| 127 * | |
| 128 * @attribute snaps | |
| 129 * @type boolean | |
| 130 * @default false | |
| 131 */ | |
| 132 snaps: false, | |
| 133 | |
| 134 /** | |
| 135 * If true, a pin with numeric value label is shown when the slider thumb | |
| 136 * is pressed. Use for settings for which users need to know the exact | |
| 137 * value of the setting. | |
| 138 * | |
| 139 * @attribute pin | |
| 140 * @type boolean | |
| 141 * @default false | |
| 142 */ | |
| 143 pin: false, | |
| 144 | |
| 145 /** | |
| 146 * If true, this slider is disabled. A disabled slider cannot be tapped | |
| 147 * or dragged to change the slider value. | |
| 148 * | |
| 149 * @attribute disabled | |
| 150 * @type boolean | |
| 151 * @default false | |
| 152 */ | |
| 153 disabled: false, | |
| 154 | |
| 155 /** | |
| 156 * The number that represents the current secondary progress. | |
| 157 * | |
| 158 * @attribute secondaryProgress | |
| 159 * @type number | |
| 160 * @default 0 | |
| 161 */ | |
| 162 secondaryProgress: 0, | |
| 163 | |
| 164 /** | |
| 165 * If true, an input is shown and user can use it to set the slider value. | |
| 166 * | |
| 167 * @attribute editable | |
| 168 * @type boolean | |
| 169 * @default false | |
| 170 */ | |
| 171 editable: false, | |
| 172 | |
| 173 /** | |
| 174 * The immediate value of the slider. This value is updated while the user | |
| 175 * is dragging the slider. | |
| 176 * | |
| 177 * @attribute immediateValue | |
| 178 * @type number | |
| 179 * @default 0 | |
| 180 */ | |
| 181 | |
| 182 observe: { | |
| 183 'min max step snaps': 'update' | |
| 184 }, | |
| 185 | |
| 186 ready: function() { | |
| 187 this.update(); | |
| 188 }, | |
| 189 | |
| 190 update: function() { | |
| 191 this.positionKnob(this.calcRatio(this.value)); | |
| 192 this.updateMarkers(); | |
| 193 }, | |
| 194 | |
| 195 valueChanged: function() { | |
| 196 this.update(); | |
| 197 this.fire('change'); | |
| 198 }, | |
| 199 | |
| 200 expandKnob: function() { | |
| 201 this.$.sliderKnob.classList.add('expand'); | |
| 202 }, | |
| 203 | |
| 204 resetKnob: function() { | |
| 205 this.expandJob && this.expandJob.stop(); | |
| 206 this.$.sliderKnob.classList.remove('expand'); | |
| 207 }, | |
| 208 | |
| 209 positionKnob: function(ratio) { | |
| 210 this._ratio = ratio; | |
| 211 this.immediateValue = this.calcStep(this.calcKnobPosition()) || 0; | |
| 212 if (this.snaps) { | |
| 213 this._ratio = this.calcRatio(this.immediateValue); | |
| 214 } | |
| 215 this.$.sliderKnob.style.left = this._ratio * 100 + '%'; | |
| 216 }, | |
| 217 | |
| 218 immediateValueChanged: function() { | |
| 219 this.$.sliderKnob.classList.toggle('ring', this.immediateValue <= this.min
); | |
| 220 }, | |
| 221 | |
| 222 inputChange: function() { | |
| 223 this.value = this.$.input.value; | |
| 224 this.fire('manual-change'); | |
| 225 }, | |
| 226 | |
| 227 calcKnobPosition: function() { | |
| 228 return (this.max - this.min) * this._ratio + this.min; | |
| 229 }, | |
| 230 | |
| 231 measureWidth: function() { | |
| 232 this._w = this.$.sliderBar.offsetWidth; | |
| 233 }, | |
| 234 | |
| 235 trackStart: function(e) { | |
| 236 this.measureWidth(); | |
| 237 this._x = this._ratio * this._w; | |
| 238 this._startx = this._x || 0; | |
| 239 this._minx = - this._startx; | |
| 240 this._maxx = this._w - this._startx; | |
| 241 this.$.sliderKnob.classList.add('dragging'); | |
| 242 e.preventTap(); | |
| 243 }, | |
| 244 | |
| 245 trackx: function(e) { | |
| 246 var x = Math.min(this._maxx, Math.max(this._minx, e.dx)); | |
| 247 this._x = this._startx + x; | |
| 248 this._ratio = this._x / this._w; | |
| 249 this.immediateValue = this.calcStep(this.calcKnobPosition()) || 0; | |
| 250 var s = this.$.sliderKnob.style; | |
| 251 s.transform = s.webkitTransform = 'translate3d(' + (this.snaps ? | |
| 252 (this.calcRatio(this.immediateValue) * this._w) - this._startx : x) +
'px, 0, 0)'; | |
| 253 }, | |
| 254 | |
| 255 trackEnd: function() { | |
| 256 var s = this.$.sliderKnob.style; | |
| 257 s.transform = s.webkitTransform = ''; | |
| 258 this.$.sliderKnob.classList.remove('dragging'); | |
| 259 this.resetKnob(); | |
| 260 this.value = this.immediateValue; | |
| 261 this.fire('manual-change'); | |
| 262 }, | |
| 263 | |
| 264 bardown: function(e) { | |
| 265 this.measureWidth(); | |
| 266 this.$.sliderKnob.classList.add('transiting'); | |
| 267 var rect = this.$.sliderBar.getBoundingClientRect(); | |
| 268 this.positionKnob((e.x - rect.left) / this._w); | |
| 269 this.value = this.calcStep(this.calcKnobPosition()); | |
| 270 this.expandJob = this.job(this.expandJob, this.expandKnob, 60); | |
| 271 this.fire('manual-change'); | |
| 272 }, | |
| 273 | |
| 274 knobTransitionEnd: function() { | |
| 275 this.$.sliderKnob.classList.remove('transiting'); | |
| 276 }, | |
| 277 | |
| 278 updateMarkers: function() { | |
| 279 this.markers = [], l = (this.max - this.min) / this.step; | |
| 280 for (var i = 0; i < l; i++) { | |
| 281 this.markers.push(''); | |
| 282 } | |
| 283 }, | |
| 284 | |
| 285 increment: function() { | |
| 286 this.value = this.clampValue(this.value + this.step); | |
| 287 }, | |
| 288 | |
| 289 decrement: function() { | |
| 290 this.value = this.clampValue(this.value - this.step); | |
| 291 }, | |
| 292 | |
| 293 keydown: function(e) { | |
| 294 if (this.disabled) { | |
| 295 return; | |
| 296 } | |
| 297 var c = e.keyCode; | |
| 298 if (c === 37) { | |
| 299 this.decrement(); | |
| 300 this.fire('manual-change'); | |
| 301 } else if (c === 39) { | |
| 302 this.increment(); | |
| 303 this.fire('manual-change'); | |
| 304 } | |
| 305 } | |
| 306 | |
| 307 }); | |
| 308 | |
| 309 </script> | |
| 310 </polymer-element> | |
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