@esri/calcite-components
Version:
Web Components for Esri's Calcite Design System.
816 lines (813 loc) • 53.4 kB
JavaScript
/*!
* All material copyright ESRI, All Rights Reserved, unless otherwise specified.
* See https://github.com/Esri/calcite-components/blob/master/LICENSE.md for details.
* v1.5.0-next.4
*/
import { proxyCustomElement, HTMLElement, createEvent, h, Host } from '@stencil/core/internal/client';
import { g as guid } from './guid.js';
import { j as isPrimaryPointerButton, n as intersects } from './dom.js';
import { c as connectForm, d as disconnectForm, a as afterConnectDefaultValueSet, H as HiddenFormInputSlot } from './form.js';
import { c as connectInteractive, d as disconnectInteractive, u as updateHostInteraction } from './interactive.js';
import { i as isActivationKey } from './key.js';
import { c as connectLabel, d as disconnectLabel, g as getLabelText } from './label2.js';
import { a as setUpLoadableComponent, s as setComponentLoaded, c as componentLoaded } from './loadable.js';
import { n as numberStringFormatter, c as connectLocalized, d as disconnectLocalized } from './locale.js';
import { d as decimalPlaces, c as clamp } from './math.js';
import { d as defineCustomElement$2 } from './graph.js';
const CSS = {
handleLabel: "handle__label",
handleLabelMinValue: "handle__label--minValue",
handleLabelValue: "handle__label--value",
tickMin: "tick__label--min",
tickMax: "tick__label--max"
};
const sliderCss = "@charset \"UTF-8\";@keyframes in{0%{opacity:0}100%{opacity:1}}@keyframes in-down{0%{opacity:0;transform:translate3D(0, -5px, 0)}100%{opacity:1;transform:translate3D(0, 0, 0)}}@keyframes in-up{0%{opacity:0;transform:translate3D(0, 5px, 0)}100%{opacity:1;transform:translate3D(0, 0, 0)}}@keyframes in-right{0%{opacity:0;transform:translate3D(-5px, 0, 0)}100%{opacity:1;transform:translate3D(0, 0, 0)}}@keyframes in-left{0%{opacity:0;transform:translate3D(5px, 0, 0)}100%{opacity:1;transform:translate3D(0, 0, 0)}}@keyframes in-scale{0%{opacity:0;transform:scale3D(0.95, 0.95, 1)}100%{opacity:1;transform:scale3D(1, 1, 1)}}:root{--calcite-animation-timing:calc(150ms * var(--calcite-internal-duration-factor));--calcite-internal-duration-factor:var(--calcite-duration-factor, 1);--calcite-internal-animation-timing-fast:calc(100ms * var(--calcite-internal-duration-factor));--calcite-internal-animation-timing-medium:calc(200ms * var(--calcite-internal-duration-factor));--calcite-internal-animation-timing-slow:calc(300ms * var(--calcite-internal-duration-factor))}.calcite-animate{opacity:0;animation-fill-mode:both;animation-duration:var(--calcite-animation-timing)}.calcite-animate__in{animation-name:in}.calcite-animate__in-down{animation-name:in-down}.calcite-animate__in-up{animation-name:in-up}.calcite-animate__in-right{animation-name:in-right}.calcite-animate__in-left{animation-name:in-left}.calcite-animate__in-scale{animation-name:in-scale}@media (prefers-reduced-motion: reduce){:root{--calcite-internal-duration-factor:0.01}}:root{--calcite-floating-ui-transition:var(--calcite-animation-timing);--calcite-floating-ui-z-index:var(--calcite-app-z-index-dropdown)}:host([hidden]){display:none}:host([disabled]){cursor:default;-webkit-user-select:none;user-select:none;opacity:var(--calcite-ui-opacity-disabled)}:host([disabled]) *,:host([disabled]) ::slotted(*){pointer-events:none}.scale--s{--calcite-slider-handle-size:0.625rem;--calcite-slider-handle-extension-height:0.4rem;--calcite-slider-container-font-size:var(--calcite-font-size--3)}.scale--s .handle__label,.scale--s .tick__label{line-height:.75rem}.scale--m{--calcite-slider-handle-size:0.875rem;--calcite-slider-handle-extension-height:0.5rem;--calcite-slider-container-font-size:var(--calcite-font-size--2)}.scale--m .handle__label,.scale--m .tick__label{line-height:1rem}.scale--l{--calcite-slider-handle-size:1rem;--calcite-slider-handle-extension-height:0.65rem;--calcite-slider-container-font-size:var(--calcite-font-size--1)}.scale--l .handle__label,.scale--l .tick__label{line-height:1rem}.handle__label,.tick__label{font-weight:var(--calcite-font-weight-medium);color:var(--calcite-ui-text-2);font-size:var(--calcite-slider-container-font-size)}:host{display:block}.container{position:relative;display:block;overflow-wrap:normal;word-break:normal;padding-inline:calc(var(--calcite-slider-handle-size) * 0.5);padding-block:calc(var(--calcite-slider-handle-size) * 0.5);margin-block:calc(var(--calcite-slider-handle-size) * 0.5);margin-inline:0;--calcite-slider-full-handle-height:calc(\n var(--calcite-slider-handle-size) + var(--calcite-slider-handle-extension-height)\n );touch-action:none}:host([disabled]) .track__range,:host([disabled]) .tick--active{background-color:var(--calcite-ui-text-3)}:host([disabled]) ::slotted([calcite-hydrated][disabled]),:host([disabled]) [calcite-hydrated][disabled]{opacity:1}.scale--s .thumb:not(.thumb--precise){--calcite-slider-thumb-y-offset:-0.375rem}.scale--m .thumb:not(.thumb--precise){--calcite-slider-thumb-y-offset:-0.5rem}.scale--l .thumb:not(.thumb--precise){--calcite-slider-thumb-y-offset:-0.55rem}:host([precise]:not([has-histogram])) .container .thumb--value{--calcite-slider-thumb-y-offset:calc(var(--calcite-slider-full-handle-height) * -1)}.thumb-container{position:relative;max-inline-size:100%}.thumb{--calcite-slider-thumb-x-offset:calc(var(--calcite-slider-handle-size) * 0.5);position:absolute;margin:0px;display:flex;cursor:pointer;flex-direction:column;align-items:center;border-style:none;background-color:transparent;padding:0px;font-family:inherit;outline:2px solid transparent;outline-offset:2px;transform:translate(var(--calcite-slider-thumb-x-offset), var(--calcite-slider-thumb-y-offset))}.thumb .handle__label.static,.thumb .handle__label.transformed{position:absolute;inset-block:0px;opacity:0}.thumb .handle__label.hyphen::after{content:\"—\";display:inline-block;inline-size:1em}.thumb .handle__label.hyphen--wrap{display:flex}.thumb .handle{box-sizing:border-box;border-radius:9999px;background-color:var(--calcite-ui-foreground-1);outline-color:transparent;block-size:var(--calcite-slider-handle-size);inline-size:var(--calcite-slider-handle-size);box-shadow:0 0 0 2px var(--calcite-ui-text-3) inset;transition:border var(--calcite-internal-animation-timing-medium) ease, background-color var(--calcite-internal-animation-timing-medium) ease, box-shadow var(--calcite-animation-timing) ease}.thumb .handle-extension{inline-size:0.125rem;block-size:var(--calcite-slider-handle-extension-height);background-color:var(--calcite-ui-text-3)}.thumb:hover .handle{box-shadow:0 0 0 3px var(--calcite-ui-brand) inset}.thumb:hover .handle-extension{background-color:var(--calcite-ui-brand)}.thumb:focus .handle{outline:2px solid var(--calcite-ui-focus-color, var(--calcite-ui-brand));outline-offset:calc(\n 2px *\n calc(\n 1 -\n 2 * clamp(\n 0,\n var(--calcite-ui-focus-offset-invert),\n 1\n )\n )\n )}.thumb:focus .handle-extension{background-color:var(--calcite-ui-brand)}.thumb.thumb--minValue{transform:translate(calc(var(--calcite-slider-thumb-x-offset) * -1), var(--calcite-slider-thumb-y-offset))}.thumb.thumb--precise{--calcite-slider-thumb-y-offset:-0.125rem}:host([label-handles]) .thumb{--calcite-slider-thumb-x-offset:50%}:host([label-handles]):host(:not([has-histogram])) .scale--s .thumb:not(.thumb--precise){--calcite-slider-thumb-y-offset:-1.4375rem}:host([label-handles]):host(:not([has-histogram])) .scale--m .thumb:not(.thumb--precise){--calcite-slider-thumb-y-offset:-1.875rem}:host([label-handles]):host(:not([has-histogram])) .scale--l .thumb:not(.thumb--precise){--calcite-slider-thumb-y-offset:-2rem}:host([has-histogram][label-handles]) .handle__label,:host([label-handles]:not([has-histogram])) .thumb--minValue.thumb--precise .handle__label{margin-block-start:0.5em}:host(:not([has-histogram]):not([precise])) .handle__label,:host([label-handles]:not([has-histogram])) .thumb--value .handle__label{margin-block-end:0.5em}:host([label-handles][precise]):host(:not([has-histogram])) .scale--s .thumb--value{--calcite-slider-thumb-y-offset:-2.075rem}:host([label-handles][precise]):host(:not([has-histogram])) .scale--m .thumb--value{--calcite-slider-thumb-y-offset:-2.75rem}:host([label-handles][precise]):host(:not([has-histogram])) .scale--l .thumb--value{--calcite-slider-thumb-y-offset:-3.0625rem}.thumb:focus .handle,.thumb--active .handle{background-color:var(--calcite-ui-brand);box-shadow:0 0 8px 0 rgba(0, 0, 0, 0.16)}.thumb:hover.thumb--precise:after,.thumb:focus.thumb--precise:after,.thumb--active.thumb--precise:after{background-color:var(--calcite-ui-brand)}.track{position:relative;block-size:0.125rem;border-radius:0px;background-color:var(--calcite-ui-border-2);transition:all var(--calcite-internal-animation-timing-medium) ease-in}.track__range{position:absolute;inset-block-start:0px;block-size:0.125rem;background-color:var(--calcite-ui-brand)}.container--range .track__range:hover{cursor:ew-resize}.container--range .track__range:after{position:absolute;inline-size:100%;content:\"\";inset-block-start:calc(var(--calcite-slider-full-handle-height) * 0.5 * -1);block-size:calc(var(--calcite-slider-handle-size) + var(--calcite-slider-handle-extension-height))}@media (forced-colors: active){.thumb{outline-width:0;outline-offset:0}.handle{outline:2px solid transparent;outline-offset:2px}.thumb:focus .handle,.thumb .handle-extension,.thumb:hover .handle-extension,.thumb:focus .handle-extension,.thumb:active .handle-extension{background-color:canvasText}.track{background-color:canvasText}.track__range{background-color:highlight}}.tick{position:absolute;block-size:0.25rem;inline-size:0.125rem;border-width:1px;border-style:solid;background-color:var(--calcite-ui-border-input);border-color:var(--calcite-ui-foreground-1);inset-block-start:-2px;pointer-events:none;margin-inline-start:calc(-1 * 0.125rem)}.tick--active{background-color:var(--calcite-ui-brand)}.tick__label{pointer-events:none;margin-block-start:0.875rem;display:flex;justify-content:center}.tick__label--min{transition:opacity var(--calcite-animation-timing)}.tick__label--max{transition:opacity var(--calcite-internal-animation-timing-fast)}:host([has-histogram][label-handles]) .tick__label--min,:host([has-histogram][label-handles]) .tick__label--max,:host([has-histogram][precise]) .tick__label--min,:host([has-histogram][precise]) .tick__label--max{font-weight:var(--calcite-font-weight-normal);color:var(--calcite-ui-text-3)}.graph{color:var(--calcite-ui-foreground-3);block-size:48px}:host([label-ticks][ticks]) .container{padding-block-end:calc(0.875rem + var(--calcite-slider-container-font-size))}:host([has-histogram]):host([precise][label-handles]) .container{padding-block-end:calc(var(--calcite-slider-full-handle-height) + 1em)}:host([has-histogram]):host([label-handles]:not([precise])) .container{padding-block-end:calc(var(--calcite-slider-handle-size) * 0.5 + 1em)}:host([has-histogram]):host([precise]:not([label-handles])) .container{padding-block-end:var(--calcite-slider-full-handle-height)}:host(:not([has-histogram])):host([precise]:not([label-handles])) .container{padding-block-start:var(--calcite-slider-full-handle-height)}:host(:not([has-histogram])):host([precise]:not([label-handles])) .container--range{padding-block-end:var(--calcite-slider-full-handle-height)}:host(:not([has-histogram])):host([label-handles]:not([precise])) .container{padding-block-start:calc(var(--calcite-slider-full-handle-height) + 4px)}:host(:not([has-histogram])):host([label-handles][precise]) .container{padding-block-start:calc(var(--calcite-slider-full-handle-height) + var(--calcite-slider-container-font-size) + 4px)}:host(:not([has-histogram])):host([label-handles][precise]) .container--range{padding-block-end:calc(var(--calcite-slider-full-handle-height) + var(--calcite-slider-container-font-size) + 4px)}::slotted(input[slot=hidden-form-input]){margin:0 !important;opacity:0 !important;outline:none !important;padding:0 !important;position:absolute !important;inset:0 !important;transform:none !important;-webkit-appearance:none !important;z-index:-1 !important}";
function isRange(value) {
return Array.isArray(value);
}
const Slider = /*@__PURE__*/ proxyCustomElement(class extends HTMLElement {
constructor() {
super();
this.__registerHost();
this.__attachShadow();
this.calciteSliderInput = createEvent(this, "calciteSliderInput", 6);
this.calciteSliderChange = createEvent(this, "calciteSliderChange", 6);
this.activeProp = "value";
this.guid = `calcite-slider-${guid()}`;
this.dragUpdate = (event) => {
if (this.disabled) {
return;
}
event.preventDefault();
if (this.dragProp) {
const value = this.translate(event.clientX || event.pageX);
if (isRange(this.value) && this.dragProp === "minMaxValue") {
if (this.minValueDragRange && this.maxValueDragRange && this.minMaxValueRange) {
const newMinValue = value - this.minValueDragRange;
const newMaxValue = value + this.maxValueDragRange;
if (newMaxValue <= this.max &&
newMinValue >= this.min &&
newMaxValue - newMinValue === this.minMaxValueRange) {
this.setValue({
minValue: this.clamp(newMinValue, "minValue"),
maxValue: this.clamp(newMaxValue, "maxValue")
});
}
}
else {
this.minValueDragRange = value - this.minValue;
this.maxValueDragRange = this.maxValue - value;
this.minMaxValueRange = this.maxValue - this.minValue;
}
}
else {
this.setValue({ [this.dragProp]: this.clamp(value, this.dragProp) });
}
}
};
this.pointerUpDragEnd = (event) => {
if (this.disabled || !isPrimaryPointerButton(event)) {
return;
}
this.dragEnd(event);
};
this.dragEnd = (event) => {
if (this.disabled) {
return;
}
this.removeDragListeners();
this.focusActiveHandle(event.clientX);
if (this.lastDragPropValue != this[this.dragProp]) {
this.emitChange();
}
this.dragProp = null;
this.lastDragPropValue = null;
this.minValueDragRange = null;
this.maxValueDragRange = null;
this.minMaxValueRange = null;
};
/**
* Set the reference of the track Element
*
* @internal
* @param node
*/
this.storeTrackRef = (node) => {
this.trackEl = node;
};
/**
* Returns a string representing the localized label value based if the groupSeparator prop is parsed.
*
* @param value
*/
this.determineGroupSeparator = (value) => {
if (typeof value === "number") {
numberStringFormatter.numberFormatOptions = {
locale: this.effectiveLocale,
numberingSystem: this.numberingSystem,
useGrouping: this.groupSeparator
};
return numberStringFormatter.localize(value.toString());
}
};
this.disabled = false;
this.form = undefined;
this.groupSeparator = false;
this.hasHistogram = false;
this.histogram = undefined;
this.histogramStops = undefined;
this.labelHandles = false;
this.labelTicks = false;
this.max = 100;
this.maxLabel = undefined;
this.maxValue = undefined;
this.min = 0;
this.minLabel = undefined;
this.minValue = undefined;
this.mirrored = false;
this.name = undefined;
this.numberingSystem = undefined;
this.pageStep = undefined;
this.precise = false;
this.required = false;
this.snap = false;
this.step = 1;
this.ticks = undefined;
this.value = 0;
this.scale = "m";
this.effectiveLocale = "";
this.minMaxValueRange = null;
this.minValueDragRange = null;
this.maxValueDragRange = null;
this.tickValues = [];
}
histogramWatcher(newHistogram) {
this.hasHistogram = !!newHistogram;
}
valueHandler() {
this.setMinMaxFromValue();
}
minMaxValueHandler() {
this.setValueFromMinMax();
}
//--------------------------------------------------------------------------
//
// Lifecycle
//
//--------------------------------------------------------------------------
connectedCallback() {
connectInteractive(this);
connectLocalized(this);
this.setMinMaxFromValue();
this.setValueFromMinMax();
connectLabel(this);
connectForm(this);
}
disconnectedCallback() {
disconnectInteractive(this);
disconnectLabel(this);
disconnectForm(this);
disconnectLocalized(this);
this.removeDragListeners();
}
componentWillLoad() {
setUpLoadableComponent(this);
this.tickValues = this.generateTickValues();
if (!isRange(this.value)) {
this.value = this.clamp(this.value);
}
afterConnectDefaultValueSet(this, this.value);
if (this.snap && !isRange(this.value)) {
this.value = this.getClosestStep(this.value);
}
if (this.histogram) {
this.hasHistogram = true;
}
}
componentDidLoad() {
setComponentLoaded(this);
}
componentDidRender() {
if (this.labelHandles) {
this.adjustHostObscuredHandleLabel("value");
if (isRange(this.value)) {
this.adjustHostObscuredHandleLabel("minValue");
if (!(this.precise && !this.hasHistogram)) {
this.hyphenateCollidingRangeHandleLabels();
}
}
}
this.hideObscuredBoundingTickLabels();
updateHostInteraction(this);
}
render() {
const id = this.el.id || this.guid;
const maxProp = isRange(this.value) ? "maxValue" : "value";
const value = isRange(this.value) ? this.maxValue : this.value;
const displayedValue = this.determineGroupSeparator(value);
const displayedMinValue = this.determineGroupSeparator(this.minValue);
const min = this.minValue || this.min;
const useMinValue = this.shouldUseMinValue();
const minInterval = this.getUnitInterval(useMinValue ? this.minValue : min) * 100;
const maxInterval = this.getUnitInterval(value) * 100;
const mirror = this.shouldMirror();
const leftThumbOffset = `${mirror ? 100 - minInterval : minInterval}%`;
const rightThumbOffset = `${mirror ? maxInterval : 100 - maxInterval}%`;
const valueIsRange = isRange(this.value);
const handleLabelMinValueClasses = `${CSS.handleLabel} ${CSS.handleLabelMinValue}`;
const handleLabelValueClasses = `${CSS.handleLabel} ${CSS.handleLabelValue}`;
const handle = (h("div", { "aria-disabled": this.disabled, "aria-label": valueIsRange ? this.maxLabel : this.minLabel, "aria-orientation": "horizontal", "aria-valuemax": this.max, "aria-valuemin": this.min, "aria-valuenow": value, class: {
thumb: true,
"thumb--value": true,
"thumb--active": this.lastDragProp !== "minMaxValue" && this.dragProp === maxProp
}, onBlur: () => (this.activeProp = null), onFocus: () => (this.activeProp = maxProp), onPointerDown: (event) => this.pointerDownDragStart(event, maxProp), role: "slider", style: { right: rightThumbOffset }, tabIndex: 0,
// eslint-disable-next-line react/jsx-sort-props
ref: (el) => (this.maxHandle = el) }, h("div", { class: "handle" })));
const labeledHandle = (h("div", { "aria-disabled": this.disabled, "aria-label": valueIsRange ? this.maxLabel : this.minLabel, "aria-orientation": "horizontal", "aria-valuemax": this.max, "aria-valuemin": this.min, "aria-valuenow": value, class: {
thumb: true,
"thumb--value": true,
"thumb--active": this.lastDragProp !== "minMaxValue" && this.dragProp === maxProp
}, onBlur: () => (this.activeProp = null), onFocus: () => (this.activeProp = maxProp), onPointerDown: (event) => this.pointerDownDragStart(event, maxProp), role: "slider", style: { right: rightThumbOffset }, tabIndex: 0,
// eslint-disable-next-line react/jsx-sort-props
ref: (el) => (this.maxHandle = el) }, h("span", { "aria-hidden": "true", class: handleLabelValueClasses }, displayedValue), h("span", { "aria-hidden": "true", class: `${handleLabelValueClasses} static` }, displayedValue), h("span", { "aria-hidden": "true", class: `${handleLabelValueClasses} transformed` }, displayedValue), h("div", { class: "handle" })));
const histogramLabeledHandle = (h("div", { "aria-disabled": this.disabled, "aria-label": valueIsRange ? this.maxLabel : this.minLabel, "aria-orientation": "horizontal", "aria-valuemax": this.max, "aria-valuemin": this.min, "aria-valuenow": value, class: {
thumb: true,
"thumb--value": true,
"thumb--active": this.lastDragProp !== "minMaxValue" && this.dragProp === maxProp
}, onBlur: () => (this.activeProp = null), onFocus: () => (this.activeProp = maxProp), onPointerDown: (event) => this.pointerDownDragStart(event, maxProp), role: "slider", style: { right: rightThumbOffset }, tabIndex: 0,
// eslint-disable-next-line react/jsx-sort-props
ref: (el) => (this.maxHandle = el) }, h("div", { class: "handle" }), h("span", { "aria-hidden": "true", class: handleLabelValueClasses }, displayedValue), h("span", { "aria-hidden": "true", class: `${handleLabelValueClasses} static` }, displayedValue), h("span", { "aria-hidden": "true", class: `${handleLabelValueClasses} transformed` }, displayedValue)));
const preciseHandle = (h("div", { "aria-disabled": this.disabled, "aria-label": valueIsRange ? this.maxLabel : this.minLabel, "aria-orientation": "horizontal", "aria-valuemax": this.max, "aria-valuemin": this.min, "aria-valuenow": value, class: {
thumb: true,
"thumb--value": true,
"thumb--active": this.lastDragProp !== "minMaxValue" && this.dragProp === maxProp,
"thumb--precise": true
}, onBlur: () => (this.activeProp = null), onFocus: () => (this.activeProp = maxProp), onPointerDown: (event) => this.pointerDownDragStart(event, maxProp), role: "slider", style: { right: rightThumbOffset }, tabIndex: 0,
// eslint-disable-next-line react/jsx-sort-props
ref: (el) => (this.maxHandle = el) }, h("div", { class: "handle" }), h("div", { class: "handle-extension" })));
const histogramPreciseHandle = (h("div", { "aria-disabled": this.disabled, "aria-label": valueIsRange ? this.maxLabel : this.minLabel, "aria-orientation": "horizontal", "aria-valuemax": this.max, "aria-valuemin": this.min, "aria-valuenow": value, class: {
thumb: true,
"thumb--value": true,
"thumb--active": this.lastDragProp !== "minMaxValue" && this.dragProp === maxProp,
"thumb--precise": true
}, onBlur: () => (this.activeProp = null), onFocus: () => (this.activeProp = maxProp), onPointerDown: (event) => this.pointerDownDragStart(event, maxProp), role: "slider", style: { right: rightThumbOffset }, tabIndex: 0,
// eslint-disable-next-line react/jsx-sort-props
ref: (el) => (this.maxHandle = el) }, h("div", { class: "handle-extension" }), h("div", { class: "handle" })));
const labeledPreciseHandle = (h("div", { "aria-disabled": this.disabled, "aria-label": valueIsRange ? this.maxLabel : this.minLabel, "aria-orientation": "horizontal", "aria-valuemax": this.max, "aria-valuemin": this.min, "aria-valuenow": value, class: {
thumb: true,
"thumb--value": true,
"thumb--active": this.lastDragProp !== "minMaxValue" && this.dragProp === maxProp,
"thumb--precise": true
}, onBlur: () => (this.activeProp = null), onFocus: () => (this.activeProp = maxProp), onPointerDown: (event) => this.pointerDownDragStart(event, maxProp), role: "slider", style: { right: rightThumbOffset }, tabIndex: 0,
// eslint-disable-next-line react/jsx-sort-props
ref: (el) => (this.maxHandle = el) }, h("span", { "aria-hidden": "true", class: handleLabelValueClasses }, displayedValue), h("span", { "aria-hidden": "true", class: `${handleLabelValueClasses} static` }, displayedValue), h("span", { "aria-hidden": "true", class: `${handleLabelValueClasses} transformed` }, displayedValue), h("div", { class: "handle" }), h("div", { class: "handle-extension" })));
const histogramLabeledPreciseHandle = (h("div", { "aria-disabled": this.disabled, "aria-label": valueIsRange ? this.maxLabel : this.minLabel, "aria-orientation": "horizontal", "aria-valuemax": this.max, "aria-valuemin": this.min, "aria-valuenow": value, class: {
thumb: true,
"thumb--value": true,
"thumb--active": this.lastDragProp !== "minMaxValue" && this.dragProp === maxProp,
"thumb--precise": true
}, onBlur: () => (this.activeProp = null), onFocus: () => (this.activeProp = maxProp), onPointerDown: (event) => this.pointerDownDragStart(event, maxProp), role: "slider", style: { right: rightThumbOffset }, tabIndex: 0,
// eslint-disable-next-line react/jsx-sort-props
ref: (el) => (this.maxHandle = el) }, h("div", { class: "handle-extension" }), h("div", { class: "handle" }), h("span", { "aria-hidden": "true", class: handleLabelValueClasses }, displayedValue), h("span", { "aria-hidden": "true", class: `${handleLabelValueClasses} static` }, displayedValue), h("span", { "aria-hidden": "true", class: `${handleLabelValueClasses} transformed` }, displayedValue)));
const minHandle = (h("div", { "aria-disabled": this.disabled, "aria-label": this.minLabel, "aria-orientation": "horizontal", "aria-valuemax": this.max, "aria-valuemin": this.min, "aria-valuenow": this.minValue, class: {
thumb: true,
"thumb--minValue": true,
"thumb--active": this.dragProp === "minValue"
}, onBlur: () => (this.activeProp = null), onFocus: () => (this.activeProp = "minValue"), onPointerDown: (event) => this.pointerDownDragStart(event, "minValue"), role: "slider", style: { left: leftThumbOffset }, tabIndex: 0,
// eslint-disable-next-line react/jsx-sort-props
ref: (el) => (this.minHandle = el) }, h("div", { class: "handle" })));
const minLabeledHandle = (h("div", { "aria-disabled": this.disabled, "aria-label": this.minLabel, "aria-orientation": "horizontal", "aria-valuemax": this.max, "aria-valuemin": this.min, "aria-valuenow": this.minValue, class: {
thumb: true,
"thumb--minValue": true,
"thumb--active": this.dragProp === "minValue"
}, onBlur: () => (this.activeProp = null), onFocus: () => (this.activeProp = "minValue"), onPointerDown: (event) => this.pointerDownDragStart(event, "minValue"), role: "slider", style: { left: leftThumbOffset }, tabIndex: 0,
// eslint-disable-next-line react/jsx-sort-props
ref: (el) => (this.minHandle = el) }, h("span", { "aria-hidden": "true", class: handleLabelMinValueClasses }, displayedMinValue), h("span", { "aria-hidden": "true", class: `${handleLabelMinValueClasses} static` }, displayedMinValue), h("span", { "aria-hidden": "true", class: `${handleLabelMinValueClasses} transformed` }, displayedMinValue), h("div", { class: "handle" })));
const minHistogramLabeledHandle = (h("div", { "aria-disabled": this.disabled, "aria-label": this.minLabel, "aria-orientation": "horizontal", "aria-valuemax": this.max, "aria-valuemin": this.min, "aria-valuenow": this.minValue, class: {
thumb: true,
"thumb--minValue": true,
"thumb--active": this.dragProp === "minValue"
}, onBlur: () => (this.activeProp = null), onFocus: () => (this.activeProp = "minValue"), onPointerDown: (event) => this.pointerDownDragStart(event, "minValue"), role: "slider", style: { left: leftThumbOffset }, tabIndex: 0,
// eslint-disable-next-line react/jsx-sort-props
ref: (el) => (this.minHandle = el) }, h("div", { class: "handle" }), h("span", { "aria-hidden": "true", class: handleLabelMinValueClasses }, displayedMinValue), h("span", { "aria-hidden": "true", class: `${handleLabelMinValueClasses} static` }, displayedMinValue), h("span", { "aria-hidden": "true", class: `${handleLabelMinValueClasses} transformed` }, displayedMinValue)));
const minPreciseHandle = (h("div", { "aria-disabled": this.disabled, "aria-label": this.minLabel, "aria-orientation": "horizontal", "aria-valuemax": this.max, "aria-valuemin": this.min, "aria-valuenow": this.minValue, class: {
thumb: true,
"thumb--minValue": true,
"thumb--active": this.dragProp === "minValue",
"thumb--precise": true
}, onBlur: () => (this.activeProp = null), onFocus: () => (this.activeProp = "minValue"), onPointerDown: (event) => this.pointerDownDragStart(event, "minValue"), role: "slider", style: { left: leftThumbOffset }, tabIndex: 0,
// eslint-disable-next-line react/jsx-sort-props
ref: (el) => (this.minHandle = el) }, h("div", { class: "handle-extension" }), h("div", { class: "handle" })));
const minLabeledPreciseHandle = (h("div", { "aria-disabled": this.disabled, "aria-label": this.minLabel, "aria-orientation": "horizontal", "aria-valuemax": this.max, "aria-valuemin": this.min, "aria-valuenow": this.minValue, class: {
thumb: true,
"thumb--minValue": true,
"thumb--active": this.dragProp === "minValue",
"thumb--precise": true
}, onBlur: () => (this.activeProp = null), onFocus: () => (this.activeProp = "minValue"), onPointerDown: (event) => this.pointerDownDragStart(event, "minValue"), role: "slider", style: { left: leftThumbOffset }, tabIndex: 0,
// eslint-disable-next-line react/jsx-sort-props
ref: (el) => (this.minHandle = el) }, h("div", { class: "handle-extension" }), h("div", { class: "handle" }), h("span", { "aria-hidden": "true", class: handleLabelMinValueClasses }, displayedMinValue), h("span", { "aria-hidden": "true", class: `${handleLabelMinValueClasses} static` }, displayedMinValue), h("span", { "aria-hidden": "true", class: `${handleLabelMinValueClasses} transformed` }, displayedMinValue)));
return (h(Host, { id: id, onTouchStart: this.handleTouchStart }, h("div", { "aria-label": getLabelText(this), class: {
["container"]: true,
["container--range"]: valueIsRange,
[`scale--${this.scale}`]: true
} }, this.renderGraph(), h("div", { class: "track",
// eslint-disable-next-line react/jsx-sort-props
ref: this.storeTrackRef }, h("div", { class: "track__range", onPointerDown: (event) => this.pointerDownDragStart(event, "minMaxValue"), style: {
left: `${mirror ? 100 - maxInterval : minInterval}%`,
right: `${mirror ? minInterval : 100 - maxInterval}%`
} }), h("div", { class: "ticks" }, this.tickValues.map((tick) => {
const tickOffset = `${this.getUnitInterval(tick) * 100}%`;
let activeTicks = tick >= min && tick <= value;
if (useMinValue) {
activeTicks = tick >= this.minValue && tick <= this.maxValue;
}
return (h("span", { class: {
tick: true,
"tick--active": activeTicks
}, style: {
left: mirror ? "" : tickOffset,
right: mirror ? tickOffset : ""
} }, this.renderTickLabel(tick)));
}))), h("div", { class: "thumb-container" }, !this.precise && !this.labelHandles && valueIsRange && minHandle, !this.hasHistogram &&
!this.precise &&
this.labelHandles &&
valueIsRange &&
minLabeledHandle, this.precise && !this.labelHandles && valueIsRange && minPreciseHandle, this.precise && this.labelHandles && valueIsRange && minLabeledPreciseHandle, this.hasHistogram &&
!this.precise &&
this.labelHandles &&
valueIsRange &&
minHistogramLabeledHandle, !this.precise && !this.labelHandles && handle, !this.hasHistogram && !this.precise && this.labelHandles && labeledHandle, !this.hasHistogram && this.precise && !this.labelHandles && preciseHandle, this.hasHistogram && this.precise && !this.labelHandles && histogramPreciseHandle, !this.hasHistogram && this.precise && this.labelHandles && labeledPreciseHandle, this.hasHistogram && !this.precise && this.labelHandles && histogramLabeledHandle, this.hasHistogram &&
this.precise &&
this.labelHandles &&
histogramLabeledPreciseHandle, h(HiddenFormInputSlot, { component: this })))));
}
renderGraph() {
return this.histogram ? (h("calcite-graph", { class: "graph", colorStops: this.histogramStops, data: this.histogram, highlightMax: isRange(this.value) ? this.maxValue : this.value, highlightMin: isRange(this.value) ? this.minValue : this.min, max: this.max, min: this.min })) : null;
}
renderTickLabel(tick) {
const valueIsRange = isRange(this.value);
const isMinTickLabel = tick === this.min;
const isMaxTickLabel = tick === this.max;
const displayedTickValue = this.determineGroupSeparator(tick);
const tickLabel = (h("span", { class: {
tick__label: true,
[CSS.tickMin]: isMinTickLabel,
[CSS.tickMax]: isMaxTickLabel
} }, displayedTickValue));
if (this.labelTicks && !this.hasHistogram && !valueIsRange) {
return tickLabel;
}
if (this.labelTicks &&
!this.hasHistogram &&
valueIsRange &&
!this.precise &&
!this.labelHandles) {
return tickLabel;
}
if (this.labelTicks &&
!this.hasHistogram &&
valueIsRange &&
!this.precise &&
this.labelHandles) {
return tickLabel;
}
if (this.labelTicks &&
!this.hasHistogram &&
valueIsRange &&
this.precise &&
(isMinTickLabel || isMaxTickLabel)) {
return tickLabel;
}
if (this.labelTicks && this.hasHistogram && !this.precise && !this.labelHandles) {
return tickLabel;
}
if (this.labelTicks &&
this.hasHistogram &&
this.precise &&
!this.labelHandles &&
(isMinTickLabel || isMaxTickLabel)) {
return tickLabel;
}
if (this.labelTicks &&
this.hasHistogram &&
!this.precise &&
this.labelHandles &&
(isMinTickLabel || isMaxTickLabel)) {
return tickLabel;
}
if (this.labelTicks &&
this.hasHistogram &&
this.precise &&
this.labelHandles &&
(isMinTickLabel || isMaxTickLabel)) {
return tickLabel;
}
return null;
}
//--------------------------------------------------------------------------
//
// Event Listeners
//
//--------------------------------------------------------------------------
keyDownHandler(event) {
const mirror = this.shouldMirror();
const { activeProp, max, min, pageStep, step } = this;
const value = this[activeProp];
const { key } = event;
if (isActivationKey(key)) {
event.preventDefault();
return;
}
let adjustment;
if (key === "ArrowUp" || key === "ArrowRight") {
const directionFactor = mirror && key === "ArrowRight" ? -1 : 1;
adjustment = value + step * directionFactor;
}
else if (key === "ArrowDown" || key === "ArrowLeft") {
const directionFactor = mirror && key === "ArrowLeft" ? -1 : 1;
adjustment = value - step * directionFactor;
}
else if (key === "PageUp") {
if (pageStep) {
adjustment = value + pageStep;
}
}
else if (key === "PageDown") {
if (pageStep) {
adjustment = value - pageStep;
}
}
else if (key === "Home") {
adjustment = min;
}
else if (key === "End") {
adjustment = max;
}
if (isNaN(adjustment)) {
return;
}
event.preventDefault();
const fixedDecimalAdjustment = Number(adjustment.toFixed(decimalPlaces(step)));
this.setValue({
[activeProp]: this.clamp(fixedDecimalAdjustment, activeProp)
});
}
pointerDownHandler(event) {
if (this.disabled || !isPrimaryPointerButton(event)) {
return;
}
const x = event.clientX || event.pageX;
const position = this.translate(x);
let prop = "value";
if (isRange(this.value)) {
const inRange = position >= this.minValue && position <= this.maxValue;
if (inRange && this.lastDragProp === "minMaxValue") {
prop = "minMaxValue";
}
else {
const closerToMax = Math.abs(this.maxValue - position) < Math.abs(this.minValue - position);
prop = closerToMax || position > this.maxValue ? "maxValue" : "minValue";
}
}
this.lastDragPropValue = this[prop];
this.dragStart(prop);
const isThumbActive = this.el.shadowRoot.querySelector(".thumb:active");
if (!isThumbActive) {
this.setValue({ [prop]: this.clamp(position, prop) });
}
this.focusActiveHandle(x);
}
handleTouchStart(event) {
// needed to prevent extra click at the end of a handle drag
event.preventDefault();
}
//--------------------------------------------------------------------------
//
// Public Methods
//
//--------------------------------------------------------------------------
/** Sets focus on the component. */
async setFocus() {
await componentLoaded(this);
const handle = this.minHandle ? this.minHandle : this.maxHandle;
handle?.focus();
}
//--------------------------------------------------------------------------
//
// Private Methods
//
//--------------------------------------------------------------------------
setValueFromMinMax() {
const { minValue, maxValue } = this;
if (typeof minValue === "number" && typeof maxValue === "number") {
this.value = [minValue, maxValue];
}
}
setMinMaxFromValue() {
const { value } = this;
if (isRange(value)) {
this.minValue = value[0];
this.maxValue = value[1];
}
}
onLabelClick() {
this.setFocus();
}
shouldMirror() {
return this.mirrored && !this.hasHistogram;
}
shouldUseMinValue() {
if (!isRange(this.value)) {
return false;
}
return ((this.hasHistogram && this.maxValue === 0) || (!this.hasHistogram && this.minValue === 0));
}
generateTickValues() {
const ticks = [];
let current = this.min;
while (this.ticks && current < this.max + this.ticks) {
ticks.push(Math.min(current, this.max));
current = current + this.ticks;
}
return ticks;
}
pointerDownDragStart(event, prop) {
if (!isPrimaryPointerButton(event)) {
return;
}
this.dragStart(prop);
}
dragStart(prop) {
this.dragProp = prop;
this.lastDragProp = this.dragProp;
this.activeProp = prop;
document.addEventListener("pointermove", this.dragUpdate);
document.addEventListener("pointerup", this.pointerUpDragEnd);
document.addEventListener("pointercancel", this.dragEnd);
}
focusActiveHandle(valueX) {
switch (this.dragProp) {
case "minValue":
this.minHandle.focus();
break;
case "maxValue":
case "value":
this.maxHandle.focus();
break;
case "minMaxValue":
this.getClosestHandle(valueX).focus();
break;
}
}
emitInput() {
this.calciteSliderInput.emit();
}
emitChange() {
this.calciteSliderChange.emit();
}
removeDragListeners() {
document.removeEventListener("pointermove", this.dragUpdate);
document.removeEventListener("pointerup", this.pointerUpDragEnd);
document.removeEventListener("pointercancel", this.dragEnd);
}
/**
* Set prop value(s) if changed at the component level
*
* @param {object} values - a set of key/value pairs delineating what properties in the component to update
*/
setValue(values) {
let valueChanged;
Object.keys(values).forEach((propName) => {
const newValue = values[propName];
if (!valueChanged) {
const oldValue = this[propName];
valueChanged = oldValue !== newValue;
}
this[propName] = newValue;
});
if (!valueChanged) {
return;
}
const dragging = this.dragProp;
if (!dragging) {
this.emitChange();
}
this.emitInput();
}
/**
* If number is outside range, constrain to min or max
*
* @param value
* @param prop
* @internal
*/
clamp(value, prop) {
value = clamp(value, this.min, this.max);
// ensure that maxValue and minValue don't swap positions
if (prop === "maxValue") {
value = Math.max(value, this.minValue);
}
if (prop === "minValue") {
value = Math.min(value, this.maxValue);
}
return value;
}
/**
* Translate a pixel position to value along the range
*
* @param x
* @internal
*/
translate(x) {
const range = this.max - this.min;
const { left, width } = this.trackEl.getBoundingClientRect();
const percent = (x - left) / width;
const mirror = this.shouldMirror();
const clampedValue = this.clamp(this.min + range * (mirror ? 1 - percent : percent));
let value = Number(clampedValue.toFixed(decimalPlaces(this.step)));
if (this.snap && this.step) {
value = this.getClosestStep(value);
}
return value;
}
/**
* Get closest allowed value along stepped values
*
* @param num
* @internal
*/
getClosestStep(num) {
num = Number(this.clamp(num).toFixed(decimalPlaces(this.step)));
if (this.step) {
const step = Math.round(num / this.step) * this.step;
num = Number(this.clamp(step).toFixed(decimalPlaces(this.step)));
}
return num;
}
getClosestHandle(valueX) {
return this.getDistanceX(this.maxHandle, valueX) > this.getDistanceX(this.minHandle, valueX)
? this.minHandle
: this.maxHandle;
}
getDistanceX(el, valueX) {
return Math.abs(el.getBoundingClientRect().left - valueX);
}
getFontSizeForElement(element) {
return Number(window.getComputedStyle(element).getPropertyValue("font-size").match(/\d+/)[0]);
}
/**
* Get position of value along range as fractional value
*
* @param num
* @return {number} number in the unit interval [0,1]
* @internal
*/
getUnitInterval(num) {
num = this.clamp(num);
const range = this.max - this.min;
return (num - this.min) / range;
}
adjustHostObscuredHandleLabel(name) {
const label = this.el.shadowRoot.querySelector(`.handle__label--${name}`);
const labelStatic = this.el.shadowRoot.querySelector(`.handle__label--${name}.static`);
const labelTransformed = this.el.shadowRoot.querySelector(`.handle__label--${name}.transformed`);
const labelStaticBounds = labelStatic.getBoundingClientRect();
const labelStaticOffset = this.getHostOffset(labelStaticBounds.left, labelStaticBounds.right);
label.style.transform = `translateX(${labelStaticOffset}px)`;
labelTransformed.style.transform = `translateX(${labelStaticOffset}px)`;
}
hyphenateCollidingRangeHandleLabels() {
const { shadowRoot } = this.el;
const mirror = this.shouldMirror();
const leftModifier = mirror ? "value" : "minValue";
const rightModifier = mirror ? "minValue" : "value";
const leftValueLabel = shadowRoot.querySelector(`.handle__label--${leftModifier}`);
const leftValueLabelStatic = shadowRoot.querySelector(`.handle__label--${leftModifier}.static`);
const leftValueLabelTransformed = shadowRoot.querySelector(`.handle__label--${leftModifier}.transformed`);
const leftValueLabelStaticHostOffset = this.getHostOffset(leftValueLabelStatic.getBoundingClientRect().left, leftValueLabelStatic.getBoundingClientRect().right);
const rightValueLabel = shadowRoot.querySelector(`.handle__label--${rightModifier}`);
const rightValueLabelStatic = shadowRoot.querySelector(`.handle__label--${rightModifier}.static`);
const rightValueLabelTransformed = shadowRoot.querySelector(`.handle__label--${rightModifier}.transformed`);
const rightValueLabelStaticHostOffset = this.getHostOffset(rightValueLabelStatic.getBoundingClientRect().left, rightValueLabelStatic.getBoundingClientRect().right);
const labelFontSize = this.getFontSizeForElement(leftValueLabel);
const labelTransformedOverlap = this.getRangeLabelOverlap(leftValueLabelTransformed, rightValueLabelTransformed);
const hyphenLabel = leftValueLabel;
const labelOffset = labelFontSize / 2;
if (labelTransformedOverlap > 0) {
hyphenLabel.classList.add("hyphen", "hyphen--wrap");
if (rightValueLabelStaticHostOffset === 0 && leftValueLabelStaticHostOffset === 0) {
// Neither handle overlaps the host boundary
let leftValueLabelTranslate = labelTransformedOverlap / 2 - labelOffset;
leftValueLabelTranslate =
Math.sign(leftValueLabelTranslate) === -1
? Math.abs(leftValueLabelTranslate)
: -leftValueLabelTranslate;
const leftValueLabelTransformedHostOffset = this.getHostOffset(leftValueLabelTransformed.getBoundingClientRect().left +
leftValueLabelTranslate -
labelOffset, leftValueLabelTransformed.getBoundingClientRect().right +
leftValueLabelTranslate -
labelOffset);
let rightValueLabelTranslate = labelTransformedOverlap / 2;
const rightValueLabelTransformedHostOffset = this.getHostOffset(rightValueLabelTransformed.getBoundingClientRect().left + rightValueLabelTranslate, rightValueLabelTransformed.getBoundingClientRect().right + rightValueLabelTranslate);
if (leftValueLabelTransformedHostOffset !== 0) {
leftValueLabelTranslate += leftValueLabelTransformedHostOffset;
rightValueLabelTranslate += leftValueLabelTransformedHostOffset;
}
if (rightValueLabelTransformedHostOffset !== 0) {
leftValueLabelTranslate += rightValueLabelTransformedHostOffset;
rightValueLabelTranslate += rightValueLabelTransformedHostOffset;
}
leftValueLabel.style.transform = `translateX(${leftValueLabelTranslate}px)`;
leftValueLabelTransformed.style.transform = `translateX(${leftValueLabelTranslate - labelOffset}px)`;
rightValueLabel.style.transform = `translateX(${rightValueLabelTranslate}px)`;
rightValueLabelTransformed.style.transform = `translateX(${rightValueLabelTranslate}px)`;
}
else if (leftValueLabelStaticHostOffset > 0 || rightValueLabelStaticHostOffset > 0) {
// labels overlap host boundary on the left side
leftValueLabel.style.transform = `translateX(${leftValueLabelStaticHostOffset + labelOffset}px)`;
rightValueLabel.style.transform = `translateX(${labelTransformedOverlap + rightValueLabelStaticHostOffset}px)`;
rightValueLabelTransformed.style.transform = `translateX(${labelTransformedOverlap + rightValueLabelStaticHostOffset}px)`;
}
else if (leftValueLabelStaticHostOffset < 0 || rightValueLabelStaticHostOffset < 0) {
// labels overlap host boundary on the right side
let leftValueLabelTranslate = Math.abs(leftValueLabelStaticHostOffset) + labelTransformedOverlap - labelOffset;
leftValueLabelTranslate =
Math.sign(leftValueLabelTranslate) === -1
? Math.abs(leftValueLabelTranslate)
: -leftValueLabelTranslate;
leftValueLabel.style.transform = `translateX(${leftValueLabelTranslate}px)`;
leftValueLabelTransformed.style.transform = `translateX(${leftValueLabelTranslate - labelOffset}px)`;
}
}
else {
hyphenLabel.classList.remove("hyphen", "hyphen--wrap");
leftValueLabel.style.transform = `translateX(${leftValueLabelStaticHostOffset}px)`;
leftValueLabelTransformed.style.transform = `translateX(${leftValueLabelStaticHostOffset}px)`;
rightValueLabel.style.transform = `translateX(${rightValueLabelStaticHostOffset}px)`;
rightValueLabelTransformed.style.transform = `translateX(${rightValueLabelStaticHostOffset}px)`;
}
}
/**
* Hides bounding tick labels that are obscured by either handle.
*/
hideObscuredBoundingTickLabels() {
const valueIsRange = isRange(this.value);
if (!this.hasHistogram && !valueIsRange && !this.labelHandles && !this.precise) {
return;
}
if (!this.hasHistogram && !valueIsRange && this.labelHandles && !this.precise) {
return;
}
if (!this.hasHistogram && !valueIsRange && !this.labelHandles && this.precise) {
return;
}
if (!this.hasHistogram && !valueIsRange && this.labelHandles && this.precise) {
return;
}
if (!this.hasHistogram && valueIsRange && !this.precise) {
return;
}
if (this.hasHistogram && !this.precise && !this.labelHandles) {
return;
}
const minHandle = this.el.shadowRoot.querySelector(".thumb--minValue");
const maxHandle = this.el.shadowRoot.querySelector(".thumb--value");
const minTickLabel = this.el.shadowRoot.querySelector(".tick__label--min");
const maxTickLabel = this.el.shadowRoot.querySelector(".tick__label--max");
if (!minHandle && maxHandle && minTickLabel && maxTickLabel) {
minTickLabel.style.opacity = this.isMinTickLabelObscured(minTickLabel, maxHandle) ? "0" : "1";
maxTickLabel.style.opacity = this.isMaxTickLabelObscured(maxTickLabel, maxHandle) ? "0" : "1";
}
if (minHandle && maxHandle && minTickLabel && maxTickLabel) {
minTickLabel.style.opacity =
this.isMinTickLabelObscured(minTickLabel, minHandle) ||
this.isMinTickLabelObscured(minTickLabel, maxHandle)
? "0"
: "1";
maxTickLabel.style.opacity =
this.isMaxTickLabelObscured(maxTickLabel, minHandle) ||
(this.isMaxTickLabelObscured(maxTickLabel, maxHandle) && this.hasHistogram)
? "0"
: "1";
}
}
/**
* Returns an integer representing the number of pixels to offset on the left or right side based on desired position behavior.
*
* @param leftBounds
* @param rightBounds
* @internal
*/
getHostOffset(leftBounds, rightBounds) {
const hostBounds = this.el.getBoundingClientRect();
const buffer = 7;
if (leftBounds + buffer < hostBounds.left) {
return hostBounds.left - leftBounds - buffer;
}
if (rightBounds - buffer > hostBounds.right) {
return -(rightBounds - hostBounds.right) + buffer;
}
return 0;
}
/**
* Returns an integer representing the number of pixels that the two given span elements are overlapping, takin