| 1 | import { querySelector } from "../querySelector.js" |
| 2 | |
| 3 | export class MdSliderField extends HTMLElement { |
| 4 | |
| 5 | getContent() { |
| 6 | return ` |
| 7 | <style> |
| 8 | :host { |
| 9 | display: block; |
| 10 | margin: 1rem; |
| 11 | } |
| 12 | |
| 13 | :host([hidden]) { |
| 14 | display: none; |
| 15 | } |
| 16 | |
| 17 | #label::slotted(*) { |
| 18 | display: block; |
| 19 | white-space: nowrap; |
| 20 | text-overflow: ellipsis; |
| 21 | overflow: hidden; |
| 22 | color: var(--md-sys-color-on-surface-variant); |
| 23 | font-family: var(--md-sys-typescale-body-small-font); |
| 24 | font-weight: var(--md-sys-typescale-body-small-weight); |
| 25 | font-size: var(--md-sys-typescale-body-small-size); |
| 26 | font-style: var(--md-sys-typescale-body-small-font-style); |
| 27 | letter-spacing: var(--md-sys-typescale-body-small-tracking); |
| 28 | line-height: var(--md-sys-typescale-body-small-line-height); |
| 29 | text-transform: var(--md-sys-typescale-body-small-text-transform); |
| 30 | text-decoration: var(--md-sys-typescale-body-small-text-decoration); |
| 31 | } |
| 32 | |
| 33 | [name="slider"]::slotted(input) { |
| 34 | -webkit-appearance: none; |
| 35 | appearance: none; |
| 36 | height: 0.25rem; |
| 37 | border-radius: 0.125rem; |
| 38 | background-image: |
| 39 | linear-gradient(to right, var(--md-sys-color-primary) 0%, var(--md-sys-color-primary) 50%, var(--md-sys-color-surface-container-highest) 50%, var(--md-sys-color-surface-container-highest) 100%); |
| 40 | } |
| 41 | |
| 42 | [name="slider"]::slotted(input:focus) { |
| 43 | outline: none; |
| 44 | } |
| 45 | |
| 46 | [name="supporting"]::slotted(*) { |
| 47 | display: block; |
| 48 | color: var(--md-sys-color-on-surface-variant); |
| 49 | font-family: var(--md-sys-typescale-body-small-font); |
| 50 | font-weight: var(--md-sys-typescale-body-small-weight); |
| 51 | font-size: var(--md-sys-typescale-body-small-size); |
| 52 | font-style: var(--md-sys-typescale-body-small-font-style); |
| 53 | letter-spacing: var(--md-sys-typescale-body-small-tracking); |
| 54 | line-height: var(--md-sys-typescale-body-small-line-height); |
| 55 | text-transform: var(--md-sys-typescale-body-small-text-transform); |
| 56 | text-decoration: var(--md-sys-typescale-body-small-text-decoration); |
| 57 | padding-top: 0.5rem; |
| 58 | white-space: nowrap; |
| 59 | text-overflow: ellipsis; |
| 60 | overflow: hidden; |
| 61 | } |
| 62 | </style> |
| 63 | <slot id="label"></slot> |
| 64 | <slot name="slider"></slot> |
| 65 | <slot name="supporting"></slot>` |
| 66 | } |
| 67 | |
| 68 | constructor() { |
| 69 | super() |
| 70 | const shadow = this.attachShadow({ mode: "open", delegatesFocus: true }) |
| 71 | shadow.innerHTML = this.getContent() |
| 72 | this._configuraSlider = this._configuraSlider.bind(this) |
| 73 | this.analiza = this.analiza.bind(this) |
| 74 | |
| 75 | |
| 76 | |
| 77 | |
| 78 | |
| 79 | this._slotSlider = querySelector(shadow, '[name="slider"]') |
| 80 | |
| 81 | |
| 82 | |
| 83 | |
| 84 | this._input = null |
| 85 | this._slotSlider.addEventListener("slotchange", this._configuraSlider) |
| 86 | } |
| 87 | |
| 88 | |
| 89 | _configuraSlider() { |
| 90 | if (this._input !== null) { |
| 91 | this._input.removeEventListener("input", this.analiza) |
| 92 | this._input = null |
| 93 | } |
| 94 | for (const input of this._slotSlider.assignedElements()) { |
| 95 | if (input instanceof HTMLInputElement) { |
| 96 | this._input = input |
| 97 | input.addEventListener("input", this.analiza) |
| 98 | this.analiza() |
| 99 | } |
| 100 | } |
| 101 | } |
| 102 | |
| 103 | analiza() { |
| 104 | const i = this._input |
| 105 | if (i !== null) { |
| 106 | const v = i.valueAsNumber |
| 107 | const min = parseFloat(i.min) |
| 108 | const max = parseFloat(i.max) |
| 109 | const value = (v - min) / (max - min) * 100 |
| 110 | i.title = v.toString() |
| 111 | i.style.background = |
| 112 | `linear-gradient(to right, var(--md-sys-color-primary) 0%, var(--md-sys-color-primary) ${value |
| 113 | }%, var(--md-sys-color-surface-container-highest) ${value |
| 114 | }%, var(--md-sys-color-surface-container-highest) 100%)` |
| 115 | } |
| 116 | } |
| 117 | |
| 118 | } |
| 119 | |
| 120 | customElements.define("md-slider-field", MdSliderField) |