@esri/calcite-components
Version:
Web Components for Esri's Calcite Design System.
372 lines (371 loc) • 11.2 kB
JavaScript
import { Component, Element, Event, h, Host, Listen, Method, Prop } from "@stencil/core";
import { getElementDir, getElementProp } from "../../utils/dom";
import { getKey } from "../../utils/key";
export class CalciteDropdownItem {
constructor() {
//--------------------------------------------------------------------------
//
// Public Properties
//
//--------------------------------------------------------------------------
this.active = false;
}
//--------------------------------------------------------------------------
//
// Public Methods
//
//--------------------------------------------------------------------------
/** Focuses the selected item. */
async setFocus() {
this.el.focus();
}
//--------------------------------------------------------------------------
//
// Lifecycle
//
//--------------------------------------------------------------------------
connectedCallback() {
this.selectionMode = getElementProp(this.el, "selection-mode", "single");
this.parentDropdownGroupEl = this.el.closest("calcite-dropdown-group");
if (this.selectionMode === "none")
this.active = false;
}
componentWillLoad() {
this.itemPosition = this.getItemPosition();
this.calciteDropdownItemRegister.emit({
position: this.itemPosition
});
}
render() {
const attributes = this.getAttributes();
const dir = getElementDir(this.el);
const scale = getElementProp(this.el, "scale", "m");
const iconScale = scale === "l" ? "m" : "s";
const iconStartEl = (h("calcite-icon", { class: "dropdown-item-icon-start", dir: dir, flipRtl: this.iconFlipRtl === "start" || this.iconFlipRtl === "both", icon: this.iconStart, scale: iconScale }));
const contentNode = (h("span", { class: "dropdown-item-content" },
h("slot", null)));
const iconEndEl = (h("calcite-icon", { class: "dropdown-item-icon-end", dir: dir, flipRtl: this.iconFlipRtl === "end" || this.iconFlipRtl === "both", icon: this.iconEnd, scale: iconScale }));
const slottedContent = this.iconStart && this.iconEnd
? [iconStartEl, contentNode, iconEndEl]
: this.iconStart
? [iconStartEl, h("slot", null)]
: this.iconEnd
? [contentNode, iconEndEl]
: contentNode;
const contentEl = !this.href ? (slottedContent) : (h("a", Object.assign({}, attributes, { class: "dropdown-link", ref: (el) => (this.childLink = el) }), slottedContent));
const itemRole = this.href
? null
: this.selectionMode === "single"
? "menuitemradio"
: this.selectionMode === "multi"
? "menuitemcheckbox"
: "menuitem";
const itemAria = this.selectionMode !== "none" ? this.active.toString() : null;
return (h(Host, { "aria-checked": itemAria, dir: dir, isLink: this.href, role: itemRole, scale: scale, "selection-mode": this.selectionMode, tabindex: "0" },
this.selectionMode === "multi" ? (h("calcite-icon", { class: "dropdown-item-check-icon", icon: "check", scale: "s" })) : null,
contentEl));
}
//--------------------------------------------------------------------------
//
// Event Listeners
//
//--------------------------------------------------------------------------
onClick() {
this.emitRequestedItem();
}
keyDownHandler(e) {
switch (getKey(e.key)) {
case " ":
this.emitRequestedItem();
if (this.href) {
e.preventDefault();
this.childLink.click();
}
break;
case "Enter":
this.emitRequestedItem();
if (this.href)
this.childLink.click();
break;
case "Escape":
this.calciteDropdownCloseRequest.emit();
break;
case "Tab":
case "ArrowUp":
case "ArrowDown":
case "Home":
case "End":
this.calciteDropdownItemKeyEvent.emit({ keyboardEvent: e });
break;
}
e.preventDefault();
}
updateActiveItemOnChange(event) {
const parentEmittedChange = event.composedPath().includes(this.parentDropdownGroupEl);
if (parentEmittedChange) {
this.requestedDropdownGroup = event.detail.requestedDropdownGroup;
this.requestedDropdownItem = event.detail.requestedDropdownItem;
this.determineActiveItem();
}
}
//--------------------------------------------------------------------------
//
// Private Methods
//
//--------------------------------------------------------------------------
determineActiveItem() {
switch (this.selectionMode) {
case "multi":
if (this.el === this.requestedDropdownItem)
this.active = !this.active;
break;
case "single":
if (this.el === this.requestedDropdownItem)
this.active = true;
else if (this.requestedDropdownGroup === this.parentDropdownGroupEl)
this.active = false;
break;
case "none":
this.active = false;
break;
}
}
emitRequestedItem() {
this.calciteDropdownItemSelect.emit({
requestedDropdownItem: this.el,
requestedDropdownGroup: this.parentDropdownGroupEl
});
}
getAttributes() {
// spread attributes from the component to rendered child, filtering out props
const props = ["icon-start", "icon-end", "active", "hasText", "isLink", "dir", "id", "theme"];
return Array.from(this.el.attributes)
.filter((a) => a && !props.includes(a.name))
.reduce((acc, { name, value }) => (Object.assign(Object.assign({}, acc), { [name]: value })), {});
}
getItemPosition() {
const group = this.el.closest("calcite-dropdown-group");
return group
? Array.prototype.indexOf.call(group.querySelectorAll("calcite-dropdown-item"), this.el)
: 1;
}
static get is() { return "calcite-dropdown-item"; }
static get encapsulation() { return "shadow"; }
static get originalStyleUrls() { return {
"$": ["calcite-dropdown-item.scss"]
}; }
static get styleUrls() { return {
"$": ["calcite-dropdown-item.css"]
}; }
static get properties() { return {
"active": {
"type": "boolean",
"mutable": true,
"complexType": {
"original": "boolean",
"resolved": "boolean",
"references": {}
},
"required": false,
"optional": false,
"docs": {
"tags": [],
"text": ""
},
"attribute": "active",
"reflect": true,
"defaultValue": "false"
},
"iconFlipRtl": {
"type": "string",
"mutable": false,
"complexType": {
"original": "FlipContext",
"resolved": "\"both\" | \"end\" | \"start\"",
"references": {
"FlipContext": {
"location": "import",
"path": "../interfaces"
}
}
},
"required": false,
"optional": true,
"docs": {
"tags": [],
"text": "flip the icon(s) in rtl"
},
"attribute": "icon-flip-rtl",
"reflect": true
},
"iconStart": {
"type": "string",
"mutable": false,
"complexType": {
"original": "string",
"resolved": "string",
"references": {}
},
"required": false,
"optional": true,
"docs": {
"tags": [],
"text": "optionally pass an icon to display at the start of an item - accepts calcite ui icon names"
},
"attribute": "icon-start",
"reflect": true
},
"iconEnd": {
"type": "string",
"mutable": false,
"complexType": {
"original": "string",
"resolved": "string",
"references": {}
},
"required": false,
"optional": true,
"docs": {
"tags": [],
"text": "optionally pass an icon to display at the end of an item - accepts calcite ui icon names"
},
"attribute": "icon-end",
"reflect": true
},
"href": {
"type": "string",
"mutable": false,
"complexType": {
"original": "string",
"resolved": "string",
"references": {}
},
"required": false,
"optional": true,
"docs": {
"tags": [],
"text": "optionally pass a href - used to determine if the component should render as anchor"
},
"attribute": "href",
"reflect": true
}
}; }
static get events() { return [{
"method": "calciteDropdownItemSelect",
"name": "calciteDropdownItemSelect",
"bubbles": true,
"cancelable": true,
"composed": true,
"docs": {
"tags": [],
"text": ""
},
"complexType": {
"original": "any",
"resolved": "any",
"references": {}
}
}, {
"method": "calciteDropdownItemKeyEvent",
"name": "calciteDropdownItemKeyEvent",
"bubbles": true,
"cancelable": true,
"composed": true,
"docs": {
"tags": [{
"text": undefined,
"name": "internal"
}],
"text": ""
},
"complexType": {
"original": "ItemKeyboardEvent",
"resolved": "ItemKeyboardEvent",
"references": {
"ItemKeyboardEvent": {
"location": "import",
"path": "../calcite-dropdown/interfaces"
}
}
}
}, {
"method": "calciteDropdownItemRegister",
"name": "calciteDropdownItemRegister",
"bubbles": true,
"cancelable": true,
"composed": true,
"docs": {
"tags": [{
"text": undefined,
"name": "internal"
}],
"text": ""
},
"complexType": {
"original": "ItemRegistration",
"resolved": "ItemRegistration",
"references": {
"ItemRegistration": {
"location": "import",
"path": "../calcite-dropdown/interfaces"
}
}
}
}, {
"method": "calciteDropdownCloseRequest",
"name": "calciteDropdownCloseRequest",
"bubbles": true,
"cancelable": true,
"composed": true,
"docs": {
"tags": [{
"text": undefined,
"name": "internal"
}],
"text": ""
},
"complexType": {
"original": "any",
"resolved": "any",
"references": {}
}
}]; }
static get methods() { return {
"setFocus": {
"complexType": {
"signature": "() => Promise<void>",
"parameters": [],
"references": {
"Promise": {
"location": "global"
}
},
"return": "Promise<void>"
},
"docs": {
"text": "Focuses the selected item.",
"tags": []
}
}
}; }
static get elementRef() { return "el"; }
static get listeners() { return [{
"name": "click",
"method": "onClick",
"target": undefined,
"capture": false,
"passive": false
}, {
"name": "keydown",
"method": "keyDownHandler",
"target": undefined,
"capture": false,
"passive": false
}, {
"name": "calciteDropdownItemChange",
"method": "updateActiveItemOnChange",
"target": "body",
"capture": false,
"passive": false
}]; }
}