app/node_modules/@ionic/core/components/icon.js

/*!
 * (C) Ionic http://ionicframework.com - MIT License
 */
import { getAssetPath, proxyCustomElement, HTMLElement, Build, h, Host } from '@stencil/core/internal/client';

let CACHED_MAP;
const getIconMap = () => {
  if (typeof window === 'undefined') {
    return new Map();
  }
  else {
    if (!CACHED_MAP) {
      const win = window;
      win.Ionicons = win.Ionicons || {};
      CACHED_MAP = win.Ionicons.map = win.Ionicons.map || new Map();
    }
    return CACHED_MAP;
  }
};
const getUrl = (i) => {
  let url = getSrc(i.src);
  if (url) {
    return url;
  }
  url = getName(i.name, i.icon, i.mode, i.ios, i.md);
  if (url) {
    return getNamedUrl(url, i);
  }
  if (i.icon) {
    url = getSrc(i.icon);
    if (url) {
      return url;
    }
    url = getSrc(i.icon[i.mode]);
    if (url) {
      return url;
    }
  }
  return null;
};
const getNamedUrl = (iconName, iconEl) => {
  const url = getIconMap().get(iconName);
  if (url) {
    return url;
  }
  try {
    return getAssetPath(`svg/${iconName}.svg`);
  }
  catch (e) {
    /**
     * In the custom elements build version of ionicons, referencing an icon
     * by name will throw an invalid URL error because the asset path is not defined.
     * This catches that error and logs something that is more developer-friendly.
     * We also include a reference to the ion-icon element so developers can
     * figure out which instance of ion-icon needs to be updated.
     */
    console.warn(`[Ionicons Warning]: Could not load icon with name "${iconName}". Ensure that the icon is registered using addIcons or that the icon SVG data is passed directly to the icon component.`, iconEl);
  }
};
const getName = (iconName, icon, mode, ios, md) => {
  // default to "md" if somehow the mode wasn't set
  mode = (mode && toLower(mode)) === 'ios' ? 'ios' : 'md';
  // if an icon was passed in using the ios or md attributes
  // set the iconName to whatever was passed in
  if (ios && mode === 'ios') {
    iconName = toLower(ios);
  }
  else if (md && mode === 'md') {
    iconName = toLower(md);
  }
  else {
    if (!iconName && icon && !isSrc(icon)) {
      iconName = icon;
    }
    if (isStr(iconName)) {
      iconName = toLower(iconName);
    }
  }
  if (!isStr(iconName) || iconName.trim() === '') {
    return null;
  }
  // only allow alpha characters and dash
  const invalidChars = iconName.replace(/[a-z]|-|\d/gi, '');
  if (invalidChars !== '') {
    return null;
  }
  return iconName;
};
const getSrc = (src) => {
  if (isStr(src)) {
    src = src.trim();
    if (isSrc(src)) {
      return src;
    }
  }
  return null;
};
const isSrc = (str) => str.length > 0 && /(\/|\.)/.test(str);
const isStr = (val) => typeof val === 'string';
const toLower = (val) => val.toLowerCase();
/**
 * Elements inside of web components sometimes need to inherit global attributes
 * set on the host. For example, the inner input in `ion-input` should inherit
 * the `title` attribute that developers set directly on `ion-input`. This
 * helper function should be called in componentWillLoad and assigned to a variable
 * that is later used in the render function.
 *
 * This does not need to be reactive as changing attributes on the host element
 * does not trigger a re-render.
 */
const inheritAttributes = (el, attributes = []) => {
  const attributeObject = {};
  attributes.forEach(attr => {
    if (el.hasAttribute(attr)) {
      const value = el.getAttribute(attr);
      if (value !== null) {
        attributeObject[attr] = el.getAttribute(attr);
      }
      el.removeAttribute(attr);
    }
  });
  return attributeObject;
};
/**
 * Returns `true` if the document or host element
 * has a `dir` set to `rtl`. The host value will always
 * take priority over the root document value.
 */
const isRTL = (hostEl) => {
  if (hostEl) {
    if (hostEl.dir !== '') {
      return hostEl.dir.toLowerCase() === 'rtl';
    }
  }
  return (document === null || document === void 0 ? void 0 : document.dir.toLowerCase()) === 'rtl';
};

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%}@supports (background: -webkit-named-image(i)){:host(.icon-rtl) .icon-inner{-webkit-transform:scaleX(-1);transform:scaleX(-1)}}@supports not selector(:dir(rtl)) and selector(:host-context([dir='rtl'])){:host(.icon-rtl) .icon-inner{-webkit-transform:scaleX(-1);transform:scaleX(-1)}}:host(.flip-rtl):host-context([dir='rtl']) .icon-inner{-webkit-transform:scaleX(-1);transform:scaleX(-1)}@supports selector(:dir(rtl)){:host(.flip-rtl:dir(rtl)) .icon-inner{-webkit-transform:scaleX(-1);transform:scaleX(-1)}:host(.flip-rtl:dir(ltr)) .icon-inner{-webkit-transform:scaleX(1);transform:scaleX(1)}}:host(.icon-small){font-size:1.125rem !important}:host(.icon-large){font-size:2rem !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 IonIconStyle0 = iconCss;

const Icon = /*@__PURE__*/ proxyCustomElement(class Icon extends HTMLElement {
    constructor() {
        super();
        this.__registerHost();
        this.__attachShadow();
        this.iconName = null;
        this.inheritedAttributes = {};
        this.didLoadIcon = false;
        this.svgContent = undefined;
        this.isVisible = false;
        this.mode = getIonMode();
        this.color = undefined;
        this.ios = undefined;
        this.md = undefined;
        this.flipRtl = undefined;
        this.name = undefined;
        this.src = undefined;
        this.icon = undefined;
        this.size = undefined;
        this.lazy = false;
        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();
        });
    }
    componentDidLoad() {
        /**
         * Addresses an Angular issue where property values are assigned after the 'connectedCallback' but prior to the registration of watchers.
         * This enhancement ensures the loading of an icon when the component has finished rendering and the icon has yet to apply the SVG data.
         * This modification pertains to the usage of Angular's binding syntax:
         * `<ion-icon [name]="myIconName"></ion-icon>`
         */
        if (!this.didLoadIcon) {
            this.loadIcon();
        }
    }
    disconnectedCallback() {
        if (this.io) {
            this.io.disconnect();
            this.io = undefined;
        }
    }
    waitUntilVisible(el, rootMargin, cb) {
        if (Build.isBrowser && 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 (Build.isBrowser && 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.didLoadIcon = true;
            }
        }
        this.iconName = getName(this.name, this.icon, this.mode, this.ios, this.md);
    }
    render() {
        const { flipRtl, iconName, inheritedAttributes, el } = this;
        const mode = this.mode || 'md';
        // we have designated that arrows & chevrons should automatically flip (unless flip-rtl is set to false) because "back" is left in ltr and right in rtl, and "forward" is the opposite
        const shouldAutoFlip = iconName
            ? (iconName.includes('arrow') || iconName.includes('chevron')) && flipRtl !== false
            : false;
        // if shouldBeFlippable is true, the icon should change direction when `dir` changes
        const shouldBeFlippable = flipRtl || shouldAutoFlip;
        return (h(Host, Object.assign({ role: "img", class: Object.assign(Object.assign({ [mode]: true }, createColorClasses(this.color)), { [`icon-${this.size}`]: !!this.size, 'flip-rtl': shouldBeFlippable, 'icon-rtl': shouldBeFlippable && isRTL(el) }) }, inheritedAttributes), Build.isBrowser && this.svgContent ? (h("div", { class: "icon-inner", innerHTML: this.svgContent })) : (h("div", { class: "icon-inner" }))));
    }
    static get assetsDirs() { return ["svg"]; }
    get el() { return this; }
    static get watchers() { return {
        "name": ["loadIcon"],
        "src": ["loadIcon"],
        "icon": ["loadIcon"],
        "ios": ["loadIcon"],
        "md": ["loadIcon"]
    }; }
    static get style() { return IonIconStyle0; }
}, [1, "ion-icon", {
        "mode": [1025],
        "color": [1],
        "ios": [1],
        "md": [1],
        "flipRtl": [4, "flip-rtl"],
        "name": [513],
        "src": [1],
        "icon": [8],
        "size": [1],
        "lazy": [4],
        "sanitize": [4],
        "svgContent": [32],
        "isVisible": [32]
    }, undefined, {
        "name": ["loadIcon"],
        "src": ["loadIcon"],
        "icon": ["loadIcon"],
        "ios": ["loadIcon"],
        "md": ["loadIcon"]
    }]);
const getIonMode = () => (Build.isBrowser && typeof document !== 'undefined' && document.documentElement.getAttribute('mode')) || 'md';
const createColorClasses = (color) => {
    return color
        ? {
            'ion-color': true,
            [`ion-color-${color}`]: true,
        }
        : null;
};
function defineCustomElement() {
    if (typeof customElements === "undefined") {
        return;
    }
    const components = ["ion-icon"];
    components.forEach(tagName => { switch (tagName) {
        case "ion-icon":
            if (!customElements.get(tagName)) {
                customElements.define(tagName, Icon);
            }
            break;
    } });
}

export { Icon as I, defineCustomElement as d };