Index: third_party/polymer/v1_0/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.txt |
-The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt |
-The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt |
-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.txt |
---> |
- |
-<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-range-behavior/iron-range-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 |
- |
-The following custom properties and mixins are available for styling: |
- |
-Custom property | Description | Default |
-----------------|-------------|---------- |
-`--paper-slider-bar-color` | The background color of the slider | `transparent` |
-`--paper-slider-active-color` | The progress bar color | `--google-blue-700` |
-`--paper-slider-secondary-color` | The secondary progress bar color | `--google-blue-300` |
-`--paper-slider-knob-color` | The knob color | `--google-blue-700` |
-`--paper-slider-disabled-knob-color` | The disabled knob color | `--google-grey-500` |
-`--paper-slider-pin-color` | The pin color | `--google-blue-700` |
-`--paper-slider-font-color` | The pin's text color | `#fff` |
-`--paper-slider-disabled-active-color` | The disabled progress bar color | `--google-grey-500` |
-`--paper-slider-disabled-secondary-color` | The disabled secondary progress bar color | `--google-grey-300` |
- |
-@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$="[[_getClassNames(disabled, pin, snaps, immediateValue, min, expand, dragging, transiting, editable)]]"> |
- |
- <div class="bar-container"> |
- <paper-progress |
- id="sliderBar" |
- aria-hidden="true" |
- min="[[min]]" |
- max="[[max]]" |
- step="[[step]]" |
- value="[[immediateValue]]" |
- secondary-progress="[[secondaryProgress]]" |
- on-down="_bardown" |
- on-up="_resetKnob" |
- on-track="_onTrack"> |
- </paper-progress> |
- </div> |
- |
- <template is="dom-if" if="[[snaps]]"> |
- <div class="slider-markers horizontal layout"> |
- <template is="dom-repeat" items="[[markers]]"> |
- <div class="slider-marker flex"></div> |
- </template> |
- </div> |
- </template> |
- |
- <div id="sliderKnob" |
- class="center-justified center horizontal layout" |
- on-down="_knobdown" |
- on-up="_resetKnob" |
- on-track="_onTrack" |
- on-transitionend="_knobTransitionEnd"> |
- <paper-ripple id="ink" class="circle" center hidden$="[[!receivedFocusFromKeyboard]]"></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> |
- |
- Polymer({ |
- is: 'paper-slider', |
- |
- behaviors: [ |
- Polymer.IronA11yKeysBehavior, |
- Polymer.PaperInkyFocusBehavior, |
- Polymer.IronFormElementBehavior, |
- Polymer.IronRangeBehavior |
- ], |
- |
- 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.$$('#input').value = this.immediateValue.toString(); |
- } |
- }, |
- |
- _expandKnob: function() { |
- this._setExpand(true); |
- }, |
- |
- _resetKnob: function() { |
- this.cancelDebouncer('expandKnob'); |
- this._setExpand(false); |
- }, |
- |
- _positionKnob: function(ratio) { |
- this._setImmediateValue(this._calcStep(this._calcKnobPosition(ratio))); |
- this._setRatio(this._calcRatio(this.immediateValue)); |
- |
- this.$.sliderKnob.style.left = (this.ratio * 100) + '%'; |
- }, |
- |
- _inputChange: function() { |
- this.value = this.$$('#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.$.sliderKnob.classList.remove('dragging'); |
- this._setDragging(false); |
- this._resetKnob(); |
- this.value = this.immediateValue; |
- |
- s.transform = s.webkitTransform = ''; |
- |
- this.fire('change'); |
- }, |
- |
- _knobdown: function(event) { |
- this._expandKnob(); |
- |
- // cancel selection |
- event.detail.sourceEvent.preventDefault(); |
- |
- // set the focus manually because we will called prevent default |
- this.focus(); |
- }, |
- |
- _bardown: function(event) { |
- this._w = this.$.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'); |
- } |
- }); |
- |
- /** |
- * 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 |
- */ |
- |
-</script> |