Method _updateFontIconClasses

src/material/icon/icon.ts:359–387

()

  }

  private _updateFontIconClasses() {
    if (!this._usingFontIcon()) {
      return;
    }

    const elem: HTMLElement = this._elementRef.nativeElement;
    const fontSetClasses = (
      this.fontSet
        ? this._iconRegistry.classNameForFontAlias(this.fontSet).split(/ +/)
        : this._iconRegistry.getDefaultFontSetClass()
    ).filter(className => className.length > 0);

    this._previousFontSetClass.forEach(className => elem.classList.remove(className));
    fontSetClasses.forEach(className => elem.classList.add(className));
    this._previousFontSetClass = fontSetClasses;

    if (
      this.fontIcon !== this._previousFontIconClass &&
      !fontSetClasses.includes('mat-ligature-font')
    ) {
      if (this._previousFontIconClass) {
        elem.classList.remove(this._previousFontIconClass);
      }
      if (this.fontIcon) {
        elem.classList.add(this.fontIcon);
      }
      this._previousFontIconClass = this.fontIcon;
    }
  }

  /**
   * Cleans up a value to be used as a fontIcon or fontSet.