@esri/calcite-components
Version:
Web Components for Esri's Calcite Design System.
368 lines (367 loc) • 10.9 kB
JavaScript
import { Component, Element, Event, h, Host, Listen, Method, Prop } from "@stencil/core";
import { focusElement, getElementDir, getElementProp } from "../../utils/dom";
import { CSS } from "./resources";
function isOption(optionOrGroup) {
return optionOrGroup.tagName === "CALCITE-OPTION";
}
function isOptionGroup(optionOrGroup) {
return optionOrGroup.tagName === "CALCITE-OPTION-GROUP";
}
export class CalciteSelect {
constructor() {
//--------------------------------------------------------------------------
//
// Properties
//
//--------------------------------------------------------------------------
/**
* When true, it prevents the option from being selected.
*/
this.disabled = false;
/**
* The component scale.
*/
this.scale = "m";
/**
* The component width.
*/
this.width = "auto";
this.componentToNativeEl = new Map();
this.mutationObserver = new MutationObserver(() => this.populateInternalSelect());
this.handleInternalSelectChange = () => {
const selected = this.selectEl.selectedOptions[0];
this.selectFromNativeOption(selected);
requestAnimationFrame(() => this.emitChangeEvent());
};
this.populateInternalSelect = () => {
const optionsAndGroups = Array.from(this.el.children);
this.clearInternalSelect();
optionsAndGroups.forEach((optionOrGroup) => { var _a; return (_a = this.selectEl) === null || _a === void 0 ? void 0 : _a.append(this.toNativeElement(optionOrGroup)); });
};
this.storeSelectRef = (node) => {
this.selectEl = node;
this.populateInternalSelect();
const selected = this.selectEl.selectedOptions[0];
this.selectFromNativeOption(selected);
};
this.emitChangeEvent = () => {
this.calciteSelectChange.emit();
};
}
//--------------------------------------------------------------------------
//
// Lifecycle
//
//--------------------------------------------------------------------------
connectedCallback() {
const { el } = this;
this.mutationObserver.observe(el, {
subtree: true,
childList: true
});
if (!this.theme)
this.theme = getElementProp(this.el, "theme", "light");
}
disconnectedCallback() {
this.mutationObserver.disconnect();
}
//--------------------------------------------------------------------------
//
// Public Methods
//
//--------------------------------------------------------------------------
async setFocus() {
focusElement(this.selectEl);
}
handleOptionOrGroupChange(event) {
event.stopPropagation();
const optionOrGroup = event.target;
const nativeEl = this.componentToNativeEl.get(optionOrGroup);
if (!nativeEl) {
return;
}
this.updateNativeElements(optionOrGroup, nativeEl);
if (isOption(optionOrGroup) && optionOrGroup.selected) {
this.deselectAllExcept(optionOrGroup);
}
}
handleLabelFocus(event) {
const { requestedInput, labelEl } = event.detail;
const { el } = this;
if (labelEl.contains(el) || (requestedInput && requestedInput === el.getAttribute("id"))) {
this.setFocus();
event.stopImmediatePropagation();
}
}
//--------------------------------------------------------------------------
//
// Private Methods
//
//--------------------------------------------------------------------------
updateNativeElements(optionOrGroup, nativeOptionOrGroup) {
nativeOptionOrGroup.disabled = optionOrGroup.disabled;
nativeOptionOrGroup.label = optionOrGroup.label;
if (isOption(optionOrGroup)) {
const option = nativeOptionOrGroup;
option.selected = optionOrGroup.selected;
option.value = optionOrGroup.value;
}
}
clearInternalSelect() {
this.componentToNativeEl.forEach((value) => value.remove());
this.componentToNativeEl.clear();
}
selectFromNativeOption(nativeOption) {
if (!nativeOption) {
return;
}
let futureSelected;
this.componentToNativeEl.forEach((nativeOptionOrGroup, optionOrGroup) => {
if (isOption(optionOrGroup) && nativeOptionOrGroup === nativeOption) {
optionOrGroup.selected = true;
futureSelected = optionOrGroup;
this.deselectAllExcept(optionOrGroup);
}
});
if (futureSelected) {
requestAnimationFrame(() => (this.selectedOption = futureSelected));
}
}
toNativeElement(optionOrGroup) {
if (isOption(optionOrGroup)) {
const option = document.createElement("option");
option.disabled = optionOrGroup.disabled;
option.label = optionOrGroup.label;
option.selected = optionOrGroup.selected;
option.value = optionOrGroup.value;
this.componentToNativeEl.set(optionOrGroup, option);
return option;
}
if (isOptionGroup(optionOrGroup)) {
const group = document.createElement("optgroup");
group.disabled = optionOrGroup.disabled;
group.label = optionOrGroup.label;
Array.from(optionOrGroup.children).forEach((option) => {
const nativeOption = this.toNativeElement(option);
group.append(nativeOption);
this.componentToNativeEl.set(optionOrGroup, nativeOption);
});
this.componentToNativeEl.set(optionOrGroup, group);
return group;
}
throw new Error("unsupported element child provided");
}
deselectAllExcept(except) {
this.el.querySelectorAll("calcite-option").forEach((option) => {
if (option === except) {
return;
}
option.selected = false;
});
}
//--------------------------------------------------------------------------
//
// Render Methods
//
//--------------------------------------------------------------------------
renderChevron() {
return (h("div", { class: { [CSS.iconContainer]: true } },
h("calcite-icon", { class: CSS.icon, icon: "chevron-down", scale: "s" })));
}
render() {
const dir = getElementDir(this.el);
return (h(Host, { dir: dir },
h("select", { "aria-label": this.label, class: { [CSS.select]: true }, disabled: this.disabled, onChange: this.handleInternalSelectChange, ref: this.storeSelectRef },
h("slot", null)),
this.renderChevron()));
}
static get is() { return "calcite-select"; }
static get encapsulation() { return "shadow"; }
static get originalStyleUrls() { return {
"$": ["calcite-select.scss"]
}; }
static get styleUrls() { return {
"$": ["calcite-select.css"]
}; }
static get properties() { return {
"disabled": {
"type": "boolean",
"mutable": false,
"complexType": {
"original": "boolean",
"resolved": "boolean",
"references": {}
},
"required": false,
"optional": false,
"docs": {
"tags": [],
"text": "When true, it prevents the option from being selected."
},
"attribute": "disabled",
"reflect": true,
"defaultValue": "false"
},
"label": {
"type": "string",
"mutable": false,
"complexType": {
"original": "string",
"resolved": "string",
"references": {}
},
"required": true,
"optional": false,
"docs": {
"tags": [],
"text": "The component's label. This is required for accessibility purposes."
},
"attribute": "label",
"reflect": false
},
"scale": {
"type": "string",
"mutable": false,
"complexType": {
"original": "Scale",
"resolved": "\"l\" | \"m\" | \"s\"",
"references": {
"Scale": {
"location": "import",
"path": "../interfaces"
}
}
},
"required": false,
"optional": false,
"docs": {
"tags": [],
"text": "The component scale."
},
"attribute": "scale",
"reflect": true,
"defaultValue": "\"m\""
},
"selectedOption": {
"type": "unknown",
"mutable": true,
"complexType": {
"original": "HTMLCalciteOptionElement",
"resolved": "HTMLCalciteOptionElement",
"references": {
"HTMLCalciteOptionElement": {
"location": "global"
}
}
},
"required": false,
"optional": false,
"docs": {
"tags": [{
"text": undefined,
"name": "readonly"
}],
"text": "The currently selected option."
}
},
"theme": {
"type": "string",
"mutable": false,
"complexType": {
"original": "Theme",
"resolved": "\"dark\" | \"light\"",
"references": {
"Theme": {
"location": "import",
"path": "../interfaces"
}
}
},
"required": false,
"optional": false,
"docs": {
"tags": [],
"text": "The component theme."
},
"attribute": "theme",
"reflect": true
},
"width": {
"type": "string",
"mutable": false,
"complexType": {
"original": "Width",
"resolved": "\"auto\" | \"full\" | \"half\"",
"references": {
"Width": {
"location": "import",
"path": "../interfaces"
}
}
},
"required": false,
"optional": false,
"docs": {
"tags": [],
"text": "The component width."
},
"attribute": "width",
"reflect": true,
"defaultValue": "\"auto\""
}
}; }
static get events() { return [{
"method": "calciteSelectChange",
"name": "calciteSelectChange",
"bubbles": true,
"cancelable": true,
"composed": true,
"docs": {
"tags": [],
"text": "This event will fire whenever the selected option changes."
},
"complexType": {
"original": "void",
"resolved": "void",
"references": {}
}
}]; }
static get methods() { return {
"setFocus": {
"complexType": {
"signature": "() => Promise<void>",
"parameters": [],
"references": {
"Promise": {
"location": "global"
}
},
"return": "Promise<void>"
},
"docs": {
"text": "",
"tags": []
}
}
}; }
static get elementRef() { return "el"; }
static get listeners() { return [{
"name": "calciteOptionChange",
"method": "handleOptionOrGroupChange",
"target": undefined,
"capture": false,
"passive": false
}, {
"name": "calciteOptionGroupChange",
"method": "handleOptionOrGroupChange",
"target": undefined,
"capture": false,
"passive": false
}, {
"name": "calciteLabelFocus",
"method": "handleLabelFocus",
"target": "window",
"capture": false,
"passive": false
}]; }
}