ionicons
Version:
Premium icons for Ionic.
207 lines (201 loc) • 8.01 kB
JavaScript
import { r as registerInstance, h, H as Host, a as getElement } from './index-5514a13d.js';
import { i as isStr, b as inheritAttributes, g as getUrl, c as getName, d as isRTL } from './utils-ccb924b9.js';
const validateContent = (svgContent) => {
const div = document.createElement('div');
div.innerHTML = svgContent;
// 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') {
const svgClass = svgElm.getAttribute('class') || '';
svgElm.setAttribute('class', (svgClass + ' s-ion-icon').trim());
// 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 isValid = (elm) => {
if (elm.nodeType === 1) {
if (elm.nodeName.toLowerCase() === 'script') {
return false;
}
for (let i = 0; i < elm.attributes.length; i++) {
const name = elm.attributes[i].name;
if (isStr(name) && name.toLowerCase().indexOf('on') === 0) {
return false;
}
}
for (let i = 0; i < elm.childNodes.length; i++) {
if (!isValid(elm.childNodes[i])) {
return false;
}
}
}
return true;
};
const isSvgDataUrl = (url) => url.startsWith('data:image/svg+xml');
const isEncodedDataUrl = (url) => url.indexOf(';utf8,') !== -1;
const ioniconContent = new Map();
const requests = new Map();
let parser;
const getSvgContent = (url, sanitize) => {
// see if we already have a request for this url
let req = requests.get(url);
if (!req) {
if (typeof fetch !== 'undefined' && typeof document !== 'undefined') {
/**
* If the url is a data url of an svg, then try to parse it
* with the DOMParser. This works with content security policies enabled.
*/
if (isSvgDataUrl(url) && isEncodedDataUrl(url)) {
if (!parser) {
/**
* Create an instance of the DOM parser. This creates a single
* parser instance for the entire app, which is more efficient.
*/
parser = new DOMParser();
}
const doc = parser.parseFromString(url, 'text/html');
const svg = doc.querySelector('svg');
if (svg) {
ioniconContent.set(url, svg.outerHTML);
}
return Promise.resolve();
}
else {
// we don't already have a request
req = fetch(url).then((rsp) => {
if (rsp.ok) {
return rsp.text().then((svgContent) => {
if (svgContent && sanitize !== false) {
svgContent = validateContent(svgContent);
}
ioniconContent.set(url, svgContent || '');
});
}
ioniconContent.set(url, '');
});
// cache for the same requests
requests.set(url, req);
}
}
else {
// set to empty for ssr scenarios and resolve promise
ioniconContent.set(url, '');
return Promise.resolve();
}
}
return req;
};
const iconCss = ":host{display:inline-block;width:1em;height:1em;contain:strict;fill:currentColor;-webkit-box-sizing:content-box !important;box-sizing:content-box !important}:host .ionicon{stroke:currentColor}.ionicon-fill-none{fill:none}.ionicon-stroke-width{stroke-width:32px;stroke-width:var(--ionicon-stroke-width, 32px)}.icon-inner,.ionicon,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 Icon = class {
constructor(hostRef) {
registerInstance(this, hostRef);
this.iconName = null;
this.inheritedAttributes = {};
this.isVisible = false;
/**
* The mode determines which platform styles to use.
*/
this.mode = getIonMode();
/**
* If enabled, ion-icon will be loaded lazily when it's visible in the viewport.
* Default, `false`.
*/
this.lazy = false;
/**
* When set to `false`, SVG content that is HTTP fetched will not be checked
* if the response SVG content has any `<script>` elements, or any attributes
* that start with `on`, such as `onclick`.
* @default true
*/
this.sanitize = true;
}
componentWillLoad() {
this.inheritedAttributes = inheritAttributes(this.el, ['aria-label']);
}
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 = getUrl(this);
if (url) {
if (ioniconContent.has(url)) {
// sync if it's already loaded
this.svgContent = ioniconContent.get(url);
}
else {
// async if it hasn't been loaded
getSvgContent(url, this.sanitize).then(() => (this.svgContent = ioniconContent.get(url)));
}
}
}
this.iconName = getName(this.name, this.icon, this.mode, this.ios, this.md);
}
render() {
const { iconName, el, inheritedAttributes } = this;
const mode = this.mode || 'md';
const flipRtl = this.flipRtl ||
(iconName && (iconName.indexOf('arrow') > -1 || iconName.indexOf('chevron') > -1) && this.flipRtl !== false);
return (h(Host, Object.assign({ role: "img", class: Object.assign(Object.assign({ [mode]: true }, createColorClasses(this.color)), { [`icon-${this.size}`]: !!this.size, 'flip-rtl': !!flipRtl && isRTL(el) }) }, inheritedAttributes), this.svgContent ? (h("div", { class: "icon-inner", innerHTML: this.svgContent })) : (h("div", { class: "icon-inner" }))));
}
static get assetsDirs() { return ["svg"]; }
get el() { return getElement(this); }
static get watchers() { return {
"name": ["loadIcon"],
"src": ["loadIcon"],
"icon": ["loadIcon"],
"ios": ["loadIcon"],
"md": ["loadIcon"]
}; }
};
const getIonMode = () => (typeof document !== 'undefined' && document.documentElement.getAttribute('mode')) || 'md';
const createColorClasses = (color) => {
return color
? {
'ion-color': true,
[`ion-color-${color}`]: true,
}
: null;
};
Icon.style = iconCss;
export { Icon as ion_icon };