B2G/gecko/browser/devtools/styleinspector/CssRuleView.jsm
/**
   * The rule's line within a stylesheet
   */
The rule's line within a stylesheet
The rule ' s line within a stylesheet
get ruleLine()
  {
    if (!this.sheet) {
      return null;
    }
    return this.elementStyle.domUtils.getRuleLine(this.domRule);
  }
get ruleLine ( ) { if ( ! this . sheet ) { return null ; } return this . elementStyle . domUtils . getRuleLine ( this . domRule ) ; }
The rule's line within a stylesheet
The rule ' s line within a stylesheet
// No stylesheet, no ruleLine