Method _scopeCssText

packages/compiler/src/shadow_css.ts:416–426

(cssText: string, scopeSelector: string, hostSelector: string)

   *  scopeName .foo { ... }
   */
  private _scopeCssText(cssText: string, scopeSelector: string, hostSelector: string): string {
    // replace :host and :host-context with -shadowcsshost and -shadowcsshostcontext respectively
    cssText = this._insertPolyfillHostInCssText(cssText);
    cssText = this._convertColonHost(cssText);
    cssText = this._convertColonHostContext(cssText);
    if (scopeSelector) {
      cssText = this._scopeKeyframesRelatedCss(cssText, scopeSelector);
      cssText = this._scopeSelectors(cssText, scopeSelector, hostSelector);
    }
    return cssText.trim();
  }

  /*
   * convert a rule like :host(.foo) > .bar { }