Index: polymer_1.0.4/bower_components/paper-slider/paper-slider.html |
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+<!-- |
+@license |
+Copyright (c) 2015 The Polymer Project Authors. All rights reserved. |
+This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE |
+The complete set of authors may be found at http://polymer.github.io/AUTHORS |
+The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS |
+Code distributed by Google as part of the polymer project is also |
+subject to an additional IP rights grant found at http://polymer.github.io/PATENTS |
+--> |
+ |
+<link rel="import" href="../polymer/polymer.html"> |
+<link rel="import" href="../paper-styles/paper-styles.html"> |
+<link rel="import" href="../paper-progress/paper-progress.html"> |
+<link rel="import" href="../paper-input/paper-input.html"> |
+<link rel="import" href="../paper-behaviors/paper-inky-focus-behavior.html"> |
+<link rel="import" href="../paper-ripple/paper-ripple.html"> |
+<link rel="import" href="../iron-a11y-keys-behavior/iron-a11y-keys-behavior.html"> |
+<link rel="import" href="../iron-form-element-behavior/iron-form-element-behavior.html"> |
+ |
+<!-- |
+`paper-slider` allows user to select a value from a range of values by |
+moving the slider thumb. The interactive nature of the slider makes it a |
+great choice for settings that reflect intensity levels, such as volume, |
+brightness, or color saturation. |
+ |
+Example: |
+ |
+ <paper-slider></paper-slider> |
+ |
+Use `min` and `max` to specify the slider range. Default is 0 to 100. |
+ |
+Example: |
+ |
+ <paper-slider min="10" max="200" value="110"></paper-slider> |
+ |
+Styling slider: |
+ |
+To change the slider progress bar color: |
+ |
+ paper-slider { |
+ --paper-slider-active-color: #0f9d58; |
+ } |
+ |
+To change the slider knob color: |
+ |
+ paper-slider { |
+ --paper-slider-knob-color: #0f9d58; |
+ } |
+ |
+To change the slider pin color: |
+ |
+ paper-slider { |
+ --paper-slider-pin-color: #0f9d58; |
+ } |
+ |
+To change the slider pin's font color: |
+ |
+ paper-slider { |
+ --paper-slider-pin-font-color: #0f9d58; |
+ } |
+ |
+To change the slider secondary progress bar color: |
+ |
+ paper-slider { |
+ --paper-slider-secondary-color: #0f9d58; |
+ } |
+ |
+To change the slider disabled active color: |
+ |
+ paper-slider { |
+ --paper-slider-disabled-active-color: #ccc; |
+ } |
+ |
+To change the slider disabled secondary progress bar color: |
+ |
+ paper-slider { |
+ --paper-slider-disabled-secondary-color: #ccc; |
+ } |
+ |
+@group Paper Elements |
+@element paper-slider |
+@demo demo/index.html |
+@hero hero.svg |
+--> |
+ |
+<dom-module id="paper-slider"> |
+ |
+ <link rel="import" type="css" href="paper-slider.css"> |
+ |
+ <template> |
+ <div id="sliderContainer" |
+ class$="[[_getClassNames(disabled, pin, snaps, immediateValue, min, expand, dragging, transiting, editable)]]"> |
+ |
+ <div class="bar-container"> |
+ <paper-progress |
+ id="sliderBar" |
+ aria-hidden="true" |
+ min="[[min]]" |
+ max="[[max]]" |
+ step="[[step]]" |
+ value="[[immediateValue]]" |
+ secondary-progress="[[secondaryProgress]]" |
+ on-down="_bardown" |
+ on-up="_resetKnob" |
+ on-track="_onTrack"> |
+ </paper-progress> |
+ </div> |
+ |
+ <template is="dom-if" if="[[snaps]]"> |
+ <div class="slider-markers horizontal layout"> |
+ <template is="dom-repeat" items="[[markers]]"> |
+ <div class="slider-marker flex"></div> |
+ </template> |
+ </div> |
+ </template> |
+ |
+ <div id="sliderKnob" |
+ class="center-justified center horizontal layout" |
+ on-down="_knobdown" |
+ on-up="_resetKnob" |
+ on-track="_onTrack" |
+ on-transitionend="_knobTransitionEnd"> |
+ <paper-ripple id="ink" class="circle" center></paper-ripple> |
+ <div id="sliderKnobInner" value$="[[immediateValue]]"></div> |
+ </div> |
+ </div> |
+ |
+ <template is="dom-if" if="[[editable]]"> |
+ <paper-input |
+ id="input" |
+ class="slider-input" |
+ disabled$="[[disabled]]" |
+ on-change="_inputChange"> |
+ </paper-input> |
+ </template> |
+ </template> |
+ |
+</dom-module> |
+ |
+<script> |
+ /** |
+ * Fired when the slider's value changes. |
+ * |
+ * @event value-change |
+ */ |
+ |
+ /** |
+ * Fired when the slider's immediateValue changes. |
+ * |
+ * @event immediate-value-change |
+ */ |
+ |
+ /** |
+ * Fired when the slider's value changes due to user interaction. |
+ * |
+ * Changes to the slider's value due to changes in an underlying |
+ * bound variable will not trigger this event. |
+ * |
+ * @event change |
+ */ |
+ |
+ Polymer({ |
+ is: 'paper-slider', |
+ |
+ behaviors: [ |
+ Polymer.IronRangeBehavior, |
+ Polymer.IronA11yKeysBehavior, |
+ Polymer.IronFormElementBehavior, |
+ Polymer.PaperInkyFocusBehavior |
+ ], |
+ |
+ properties: { |
+ /** |
+ * If true, the slider thumb snaps to tick marks evenly spaced based |
+ * on the `step` property value. |
+ */ |
+ snaps: { |
+ type: Boolean, |
+ value: false, |
+ notify: true |
+ }, |
+ |
+ /** |
+ * If true, a pin with numeric value label is shown when the slider thumb |
+ * is pressed. Use for settings for which users need to know the exact |
+ * value of the setting. |
+ */ |
+ pin: { |
+ type: Boolean, |
+ value: false, |
+ notify: true |
+ }, |
+ |
+ /** |
+ * The number that represents the current secondary progress. |
+ */ |
+ secondaryProgress: { |
+ type: Number, |
+ value: 0, |
+ notify: true, |
+ observer: '_secondaryProgressChanged' |
+ }, |
+ |
+ /** |
+ * If true, an input is shown and user can use it to set the slider value. |
+ */ |
+ editable: { |
+ type: Boolean, |
+ value: false |
+ }, |
+ |
+ /** |
+ * The immediate value of the slider. This value is updated while the user |
+ * is dragging the slider. |
+ */ |
+ immediateValue: { |
+ type: Number, |
+ value: 0, |
+ readOnly: true |
+ }, |
+ |
+ /** |
+ * The maximum number of markers |
+ */ |
+ maxMarkers: { |
+ type: Number, |
+ value: 0, |
+ notify: true, |
+ observer: '_maxMarkersChanged' |
+ }, |
+ |
+ /** |
+ * If true, the knob is expanded |
+ */ |
+ expand: { |
+ type: Boolean, |
+ value: false, |
+ readOnly: true |
+ }, |
+ |
+ /** |
+ * True when the user is dragging the slider. |
+ */ |
+ dragging: { |
+ type: Boolean, |
+ value: false, |
+ readOnly: true |
+ }, |
+ |
+ transiting: { |
+ type: Boolean, |
+ value: false, |
+ readOnly: true |
+ }, |
+ |
+ markers: { |
+ type: Array, |
+ readOnly: true, |
+ value: [] |
+ }, |
+ }, |
+ |
+ observers: [ |
+ '_updateKnob(value, min, max, snaps, step)', |
+ '_minChanged(min)', |
+ '_maxChanged(max)', |
+ '_valueChanged(value)', |
+ '_immediateValueChanged(immediateValue)' |
+ ], |
+ |
+ hostAttributes: { |
+ role: 'slider', |
+ tabindex: 0 |
+ }, |
+ |
+ keyBindings: { |
+ 'left down pagedown home': '_decrementKey', |
+ 'right up pageup end': '_incrementKey' |
+ }, |
+ |
+ ready: function() { |
+ // issue polymer/polymer#1305 |
+ |
+ this.async(function() { |
+ this._updateKnob(this.value); |
+ this._updateInputValue(); |
+ }, 1); |
+ }, |
+ |
+ /** |
+ * Increases value by `step` but not above `max`. |
+ * @method increment |
+ */ |
+ increment: function() { |
+ this.value = this._clampValue(this.value + this.step); |
+ }, |
+ |
+ /** |
+ * Decreases value by `step` but not below `min`. |
+ * @method decrement |
+ */ |
+ decrement: function() { |
+ this.value = this._clampValue(this.value - this.step); |
+ }, |
+ |
+ _updateKnob: function(value) { |
+ this._positionKnob(this._calcRatio(value)); |
+ }, |
+ |
+ _minChanged: function() { |
+ this.setAttribute('aria-valuemin', this.min); |
+ }, |
+ |
+ _maxChanged: function() { |
+ this.setAttribute('aria-valuemax', this.max); |
+ }, |
+ |
+ _valueChanged: function() { |
+ this.setAttribute('aria-valuenow', this.value); |
+ this.fire('value-change'); |
+ }, |
+ |
+ _immediateValueChanged: function() { |
+ if (this.dragging) { |
+ this.fire('immediate-value-change'); |
+ } else { |
+ this.value = this.immediateValue; |
+ } |
+ this._updateInputValue(); |
+ }, |
+ |
+ _secondaryProgressChanged: function() { |
+ this.secondaryProgress = this._clampValue(this.secondaryProgress); |
+ }, |
+ |
+ _updateInputValue: function() { |
+ if (this.editable) { |
+ this.$$('#input').value = this.immediateValue.toString(); |
+ } |
+ }, |
+ |
+ _expandKnob: function() { |
+ this.$.ink.holdDown = false; |
+ this._setExpand(true); |
+ }, |
+ |
+ _resetKnob: function() { |
+ this.cancelDebouncer('expandKnob'); |
+ this._setExpand(false); |
+ this.$.ink.hidden = true; |
+ }, |
+ |
+ _positionKnob: function(ratio) { |
+ this._setImmediateValue(this._calcStep(this._calcKnobPosition(ratio))); |
+ this._setRatio(this._calcRatio(this.immediateValue)); |
+ |
+ this.$.sliderKnob.style.left = (this.ratio * 100) + '%'; |
+ }, |
+ |
+ _inputChange: function() { |
+ this.value = this.$$('#input').value; |
+ this.fire('change'); |
+ }, |
+ |
+ _calcKnobPosition: function(ratio) { |
+ return (this.max - this.min) * ratio + this.min; |
+ }, |
+ |
+ _onTrack: function(event) { |
+ switch (event.detail.state) { |
+ case 'start': |
+ this._trackStart(event); |
+ break; |
+ case 'track': |
+ this._trackX(event); |
+ break; |
+ case 'end': |
+ this._trackEnd(); |
+ break; |
+ } |
+ }, |
+ |
+ _trackStart: function(event) { |
+ this._w = this.$.sliderBar.offsetWidth; |
+ this._x = this.ratio * this._w; |
+ this._startx = this._x || 0; |
+ this._minx = - this._startx; |
+ this._maxx = this._w - this._startx; |
+ this.$.sliderKnob.classList.add('dragging'); |
+ |
+ this._setDragging(true); |
+ }, |
+ |
+ _trackX: function(e) { |
+ if (!this.dragging) { |
+ this._trackStart(e); |
+ } |
+ |
+ var dx = Math.min(this._maxx, Math.max(this._minx, e.detail.dx)); |
+ this._x = this._startx + dx; |
+ |
+ var immediateValue = this._calcStep(this._calcKnobPosition(this._x / this._w)); |
+ this._setImmediateValue(immediateValue); |
+ |
+ // update knob's position |
+ var translateX = ((this._calcRatio(immediateValue) * this._w) - this._startx); |
+ this.translate3d(translateX + 'px', 0, 0, this.$.sliderKnob); |
+ }, |
+ |
+ _trackEnd: function() { |
+ var s = this.$.sliderKnob.style; |
+ |
+ this.$.sliderKnob.classList.remove('dragging'); |
+ this._setDragging(false); |
+ this._resetKnob(); |
+ this.value = this.immediateValue; |
+ |
+ s.transform = s.webkitTransform = ''; |
+ |
+ this.fire('change'); |
+ }, |
+ |
+ _knobdown: function(event) { |
+ this._expandKnob(); |
+ |
+ // cancel selection |
+ event.detail.sourceEvent.preventDefault(); |
+ |
+ // set the focus manually because we will called prevent default |
+ this.focus(); |
+ }, |
+ |
+ _bardown: function(event) { |
+ this.$.ink.hidden = true; |
+ |
+ event.preventDefault(); |
+ |
+ this._w = this.$.sliderBar.offsetWidth; |
+ var rect = this.$.sliderBar.getBoundingClientRect(); |
+ var ratio = (event.detail.x - rect.left) / this._w; |
+ var prevRatio = this.ratio; |
+ |
+ this._setTransiting(true); |
+ |
+ this._positionKnob(ratio); |
+ |
+ this.debounce('expandKnob', this._expandKnob, 60); |
+ |
+ // if the ratio doesn't change, sliderKnob's animation won't start |
+ // and `_knobTransitionEnd` won't be called |
+ // Therefore, we need to manually update the `transiting` state |
+ |
+ if (prevRatio === this.ratio) { |
+ this._setTransiting(false); |
+ } |
+ |
+ this.async(function() { |
+ this.fire('change'); |
+ }); |
+ |
+ // cancel selection |
+ event.detail.sourceEvent.preventDefault(); |
+ }, |
+ |
+ _knobTransitionEnd: function(event) { |
+ if (event.target === this.$.sliderKnob) { |
+ this._setTransiting(false); |
+ } |
+ }, |
+ |
+ _maxMarkersChanged: function(maxMarkers) { |
+ var l = (this.max - this.min) / this.step; |
+ if (!this.snaps && l > maxMarkers) { |
+ this._setMarkers([]); |
+ } else { |
+ this._setMarkers(new Array(l)); |
+ } |
+ }, |
+ |
+ _getClassNames: function() { |
+ var classes = {}; |
+ |
+ classes.disabled = this.disabled; |
+ classes.pin = this.pin; |
+ classes.snaps = this.snaps; |
+ classes.ring = this.immediateValue <= this.min; |
+ classes.expand = this.expand; |
+ classes.dragging = this.dragging; |
+ classes.transiting = this.transiting; |
+ classes.editable = this.editable; |
+ |
+ return Object.keys(classes).filter( |
+ function(className) { |
+ return classes[className]; |
+ }).join(' '); |
+ }, |
+ |
+ _incrementKey: function(event) { |
+ if (event.detail.key === 'end') { |
+ this.value = this.max; |
+ } else { |
+ this.increment(); |
+ } |
+ this.fire('change'); |
+ }, |
+ |
+ _decrementKey: function(event) { |
+ if (event.detail.key === 'home') { |
+ this.value = this.min; |
+ } else { |
+ this.decrement(); |
+ } |
+ this.fire('change'); |
+ } |
+ }) |
+</script> |