ionicons
Version:
Premium icons for Ionic.
179 lines (176 loc) • 7.16 kB
JavaScript
import { r as registerInstance, g as getMode, h, c as getElement, d as getAssetPath, H as Host } from './ionicons-9827c99b.js';
import { g as getName, i as isSrc, b as getSrc, c as getIconMap, d as isValid } from './chunk-96c8fdf3.js';
/**
* @virtualProp {"ios" | "md"} mode - The mode determines which platform styles to use.
*/
class Icon {
constructor(hostRef) {
registerInstance(this, hostRef);
this.mode = getIonMode(this);
this.isVisible = false;
/**
* If enabled, ion-icon will be loaded lazily when it's visible in the viewport.
* Default, `false`.
*/
this.lazy = false;
}
connectedCallback() {
// purposely do not return the promise here because loading
// the svg file should not hold up loading the app
// only load the svg if it's visible
this.waitUntilVisible(this.el, '50px', () => {
this.isVisible = true;
this.loadIcon();
});
}
disconnectedCallback() {
if (this.io) {
this.io.disconnect();
this.io = undefined;
}
}
waitUntilVisible(el, rootMargin, cb) {
if (this.lazy && typeof window !== 'undefined' && window.IntersectionObserver) {
const io = this.io = new window.IntersectionObserver((data) => {
if (data[0].isIntersecting) {
io.disconnect();
this.io = undefined;
cb();
}
}, { rootMargin });
io.observe(el);
}
else {
// browser doesn't support IntersectionObserver
// so just fallback to always show it
cb();
}
}
loadIcon() {
if (this.isVisible) {
const url = this.getUrl();
if (url) {
getSvgContent(this.el.ownerDocument, url, 's-ion-icon')
.then(svgContent => this.svgContent = svgContent);
}
else {
console.error('icon was not resolved');
}
}
if (!this.ariaLabel) {
const name = getName(this.getName(), this.mode, this.ios, this.md);
// user did not provide a label
// come up with the label based on the icon name
if (name) {
this.ariaLabel = name
.replace('ios-', '')
.replace('md-', '')
.replace(/\-/g, ' ');
}
}
}
getName() {
if (this.name !== undefined) {
return this.name;
}
if (this.icon && !isSrc(this.icon)) {
return this.icon;
}
return undefined;
}
getUrl() {
let url = getSrc(this.src);
if (url) {
return url;
}
url = getName(this.getName(), this.mode, this.ios, this.md);
if (url) {
return getNamedUrl(url);
}
url = getSrc(this.icon);
if (url) {
return url;
}
return null;
}
render() {
const mode = this.mode || 'md';
const flipRtl = this.flipRtl || (this.ariaLabel && this.ariaLabel.indexOf('arrow') > -1 && this.flipRtl !== false);
return (h(Host, { role: "img", class: Object.assign({ [`${mode}`]: true }, createColorClasses(this.color), { [`icon-${this.size}`]: !!this.size, 'flip-rtl': !!flipRtl && this.el.ownerDocument.dir === 'rtl' }) }, ((this.svgContent)
? h("div", { class: "icon-inner", innerHTML: this.svgContent })
: h("div", { class: "icon-inner" }))));
}
static get assetsDirs() { return ["svg"]; }
get el() { return getElement(this); }
static get watchers() { return {
"name": ["loadIcon"],
"src": ["loadIcon"],
"icon": ["loadIcon"]
}; }
static get style() { return ":host{display:inline-block;width:1em;height:1em;contain:strict;fill:currentColor;-webkit-box-sizing:content-box!important;box-sizing:content-box!important}.icon-inner,svg{display:block;height:100%;width:100%}:host(.flip-rtl) .icon-inner{-webkit-transform:scaleX(-1);transform:scaleX(-1)}:host(.icon-small){font-size:18px!important}:host(.icon-large){font-size:32px!important}:host(.ion-color){color:var(--ion-color-base)!important}:host(.ion-color-primary){--ion-color-base:var(--ion-color-primary,#3880ff)}:host(.ion-color-secondary){--ion-color-base:var(--ion-color-secondary,#0cd1e8)}:host(.ion-color-tertiary){--ion-color-base:var(--ion-color-tertiary,#f4a942)}:host(.ion-color-success){--ion-color-base:var(--ion-color-success,#10dc60)}:host(.ion-color-warning){--ion-color-base:var(--ion-color-warning,#ffce00)}:host(.ion-color-danger){--ion-color-base:var(--ion-color-danger,#f14141)}:host(.ion-color-light){--ion-color-base:var(--ion-color-light,#f4f5f8)}:host(.ion-color-medium){--ion-color-base:var(--ion-color-medium,#989aa2)}:host(.ion-color-dark){--ion-color-base:var(--ion-color-dark,#222428)}"; }
}
const getIonMode = (ref) => {
return getMode(ref) || document.documentElement.getAttribute('mode') || 'md';
};
const getNamedUrl = (name) => {
const url = getIconMap().get(name);
if (url) {
return url;
}
return getAssetPath(`svg/${name}.svg`);
};
const requests = new Map();
const getSvgContent = (doc, url, scopedId) => {
// see if we already have a request for this url
let req = requests.get(url);
if (!req) {
// we don't already have a request
req = fetch(url, { cache: 'force-cache' }).then(rsp => {
if (isStatusValid(rsp.status)) {
return rsp.text();
}
return Promise.resolve(null);
}).then(svgContent => validateContent(doc, svgContent, scopedId));
// cache for the same requests
requests.set(url, req);
}
return req;
};
const isStatusValid = (status) => {
return status <= 299;
};
const validateContent = (document, svgContent, scopeId) => {
if (svgContent) {
const frag = document.createDocumentFragment();
const div = document.createElement('div');
div.innerHTML = svgContent;
frag.appendChild(div);
// setup this way to ensure it works on our buddy IE
for (let i = div.childNodes.length - 1; i >= 0; i--) {
if (div.childNodes[i].nodeName.toLowerCase() !== 'svg') {
div.removeChild(div.childNodes[i]);
}
}
// must only have 1 root element
const svgElm = div.firstElementChild;
if (svgElm && svgElm.nodeName.toLowerCase() === 'svg') {
if (scopeId) {
svgElm.setAttribute('class', scopeId);
}
// root element must be an svg
// lets double check we've got valid elements
// do not allow scripts
if (isValid(svgElm)) {
return div.innerHTML;
}
}
}
return '';
};
const createColorClasses = (color) => {
return (color) ? {
'ion-color': true,
[`ion-color-${color}`]: true
} : null;
};
export { Icon as ion_icon };