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maher
282
public/assets/lib/ionicons/collection/icon/icon.js
Executable file
282
public/assets/lib/ionicons/collection/icon/icon.js
Executable file
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export class Icon {
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constructor() {
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this.isVisible = false;
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/**
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* If enabled, ion-icon will be loaded lazily when it's visible in the viewport.
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* Default, `true`.
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*/
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this.lazy = true;
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}
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componentWillLoad() {
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// purposely do not return the promise here because loading
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// the svg file should not hold up loading the app
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// only load the svg if it's visible
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this.waitUntilVisible(this.el, '50px', () => {
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this.isVisible = true;
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this.loadIcon();
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});
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}
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componentDidUnload() {
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if (this.io) {
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this.io.disconnect();
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this.io = undefined;
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}
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}
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waitUntilVisible(el, rootMargin, cb) {
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if (this.lazy && this.win && this.win.IntersectionObserver) {
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const io = this.io = new this.win.IntersectionObserver((data) => {
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if (data[0].isIntersecting) {
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io.disconnect();
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this.io = undefined;
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cb();
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}
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}, { rootMargin });
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io.observe(el);
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}
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else {
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// browser doesn't support IntersectionObserver
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// so just fallback to always show it
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cb();
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}
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}
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loadIcon() {
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if (!this.isServer && this.isVisible) {
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const url = this.getUrl();
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if (url) {
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getSvgContent(url).then(svgContent => {
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this.svgContent = validateContent(this.doc, svgContent, this.el['s-sc']);
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});
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}
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}
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if (!this.ariaLabel) {
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const name = getName(this.name, this.mode, this.ios, this.md);
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// user did not provide a label
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// come up with the label based on the icon name
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if (name) {
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this.ariaLabel = name
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.replace('ios-', '')
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.replace('md-', '')
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.replace(/\-/g, ' ');
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}
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}
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}
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getUrl() {
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let url = getSrc(this.src);
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if (url) {
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return url;
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}
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url = getName(this.name, this.mode, this.ios, this.md);
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if (url) {
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return this.getNamedUrl(url);
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}
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url = getSrc(this.icon);
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if (url) {
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return url;
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}
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url = getName(this.icon, this.mode, this.ios, this.md);
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if (url) {
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return this.getNamedUrl(url);
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}
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return null;
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}
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getNamedUrl(name) {
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return `${this.resourcesUrl}svg/${name}.svg`;
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}
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hostData() {
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return {
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'role': 'img',
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class: Object.assign({}, createColorClasses(this.color), { [`icon-${this.size}`]: !!this.size })
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};
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}
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render() {
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if (!this.isServer && this.svgContent) {
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// we've already loaded up this svg at one point
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// and the svg content we've loaded and assigned checks out
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// render this svg!!
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return h("div", { class: "icon-inner", innerHTML: this.svgContent });
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}
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// actively requesting the svg
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// or it's an SSR render
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// so let's just render an empty div for now
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return h("div", { class: "icon-inner" });
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}
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static get is() { return "ion-icon"; }
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static get encapsulation() { return "shadow"; }
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static get properties() { return {
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"ariaLabel": {
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"type": String,
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"attr": "aria-label",
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"reflectToAttr": true,
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"mutable": true
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},
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"color": {
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"type": String,
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"attr": "color"
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},
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"doc": {
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"context": "document"
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},
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"el": {
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"elementRef": true
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},
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"icon": {
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"type": String,
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"attr": "icon",
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"watchCallbacks": ["loadIcon"]
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},
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"ios": {
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"type": String,
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"attr": "ios"
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},
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"isServer": {
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"context": "isServer"
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},
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"isVisible": {
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"state": true
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},
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"lazy": {
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"type": Boolean,
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"attr": "lazy"
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},
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"md": {
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"type": String,
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"attr": "md"
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},
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"mode": {
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"type": String,
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"attr": "mode"
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},
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"name": {
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"type": String,
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"attr": "name",
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"watchCallbacks": ["loadIcon"]
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},
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"resourcesUrl": {
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"context": "resourcesUrl"
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},
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"size": {
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"type": String,
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"attr": "size"
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},
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"src": {
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"type": String,
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"attr": "src",
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"watchCallbacks": ["loadIcon"]
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},
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"svgContent": {
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"state": true
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},
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"win": {
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"context": "window"
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}
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}; }
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static get style() { return "/**style-placeholder:ion-icon:**/"; }
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}
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const requests = new Map();
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function getSvgContent(url) {
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// see if we already have a request for this url
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let req = requests.get(url);
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if (!req) {
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// we don't already have a request
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req = fetch(url, { cache: 'force-cache' }).then(rsp => {
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if (rsp.ok) {
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return rsp.text();
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}
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return Promise.resolve(null);
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});
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// cache for the same requests
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requests.set(url, req);
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}
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return req;
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}
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export function getName(name, mode, ios, md) {
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// default to "md" if somehow the mode wasn't set
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mode = (mode || 'md').toLowerCase();
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// if an icon was passed in using the ios or md attributes
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// set the iconName to whatever was passed in
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if (ios && mode === 'ios') {
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name = ios.toLowerCase();
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}
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else if (md && mode === 'md') {
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name = md.toLowerCase();
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}
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else if (name) {
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name = name.toLowerCase();
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if (!/^md-|^ios-|^logo-/.test(name)) {
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// this does not have one of the defaults
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// so lets auto add in the mode prefix for them
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name = `${mode}-${name}`;
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}
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}
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if (typeof name !== 'string' || name.trim() === '') {
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return null;
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}
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// only allow alpha characters and dash
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const invalidChars = name.replace(/[a-z]|-|\d/gi, '');
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if (invalidChars !== '') {
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return null;
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}
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return name;
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}
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export function getSrc(src) {
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if (typeof src === 'string') {
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src = src.trim();
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if (src.length > 0 && /(\/|\.)/.test(src)) {
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return src;
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}
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}
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return null;
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}
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function validateContent(document, svgContent, scopeId) {
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if (svgContent) {
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const frag = document.createDocumentFragment();
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const div = document.createElement('div');
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div.innerHTML = svgContent;
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frag.appendChild(div);
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// setup this way to ensure it works on our buddy IE
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for (let i = div.childNodes.length - 1; i >= 0; i--) {
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if (div.childNodes[i].nodeName.toLowerCase() !== 'svg') {
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div.removeChild(div.childNodes[i]);
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}
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}
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// must only have 1 root element
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const svgElm = div.firstElementChild;
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if (svgElm && svgElm.nodeName.toLowerCase() === 'svg') {
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if (scopeId) {
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svgElm.setAttribute(scopeId, '');
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}
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// root element must be an svg
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// lets double check we've got valid elements
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// do not allow scripts
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if (isValid(svgElm)) {
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return div.innerHTML;
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}
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}
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}
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return '';
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}
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export function isValid(elm) {
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if (elm.nodeType === 1) {
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if (elm.nodeName.toLowerCase() === 'script') {
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return false;
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}
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for (var i = 0; i < elm.attributes.length; i++) {
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let val = elm.attributes[i].value;
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if (typeof val === 'string' && val.toLowerCase().indexOf('on') === 0) {
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return false;
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}
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}
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for (i = 0; i < elm.childNodes.length; i++) {
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if (!isValid(elm.childNodes[i])) {
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return false;
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}
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}
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}
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return true;
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}
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function createColorClasses(color) {
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return (color) ? {
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'ion-color': true,
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[`ion-color-${color}`]: true
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} : null;
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}
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