'use strict';

Object.defineProperty(exports, '__esModule', { value: true });

const index = require('./index-53856ad1.js');
const utils = require('./utils-18c46e61.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 (utils.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) {
    index.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;
    this.hasAriaHidden = () => {
      const { el } = this;
      return el.hasAttribute('aria-hidden') && el.getAttribute('aria-hidden') === 'true';
    };
  }
  componentWillLoad() {
    this.inheritedAttributes = utils.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 = utils.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)));
        }
      }
    }
    const label = (this.iconName = utils.getName(this.name, this.icon, this.mode, this.ios, this.md));
    /**
     * Come up with a default label
     * in case user does not provide their own.
     */
    if (label) {
      this.ariaLabel = label.replace(/\-/g, ' ');
    }
  }
  render() {
    const { iconName, ariaLabel, el, inheritedAttributes } = this;
    const mode = this.mode || 'md';
    const flipRtl = this.flipRtl ||
      (iconName && (iconName.indexOf('arrow') > -1 || iconName.indexOf('chevron') > -1) && this.flipRtl !== false);
    /**
     * Only set the aria-label if a) we have generated
     * one for the icon and if aria-hidden is not set to "true".
     * If developer wants to set their own aria-label, then
     * inheritedAttributes down below will override whatever
     * default label we have set.
     */
    return (index.h(index.Host, Object.assign({ "aria-label": ariaLabel !== undefined && !this.hasAriaHidden() ? ariaLabel : null, role: "img", class: Object.assign(Object.assign({ [mode]: true }, createColorClasses(this.color)), { [`icon-${this.size}`]: !!this.size, 'flip-rtl': !!flipRtl && utils.isRTL(el) }) }, inheritedAttributes), this.svgContent ? (index.h("div", { class: "icon-inner", innerHTML: this.svgContent })) : (index.h("div", { class: "icon-inner" }))));
  }
  static get assetsDirs() { return ["svg"]; }
  get el() { return index.getElement(this); }
  static get watchers() { return {
    "name": ["loadIcon"],
    "src": ["loadIcon"],
    "icon": ["loadIcon"],
    "ios": ["loadIcon"],
    "md": ["loadIcon"]
  }; }
};
const getIonMode = () => (typeof document !== 'undefined' && document.documentElement.getAttribute('mode')) || 'md';
const createColorClasses = (color) => {
  return color
    ? {
      'ion-color': true,
      [`ion-color-${color}`]: true,
    }
    : null;
};
Icon.style = iconCss;

exports.ion_icon = Icon;