Method bringToFront

packages/fairygui/src/core/GRoot.ts:348–361

* Bring window to front * 将窗口置于最前

(win: GObject)

     * 将窗口置于最前
     */
    public bringToFront(win: GObject): void {
        const cnt = this.numChildren;
        let i: number;
        if (this._modalLayer && this._modalLayer.parent === this) {
            i = this.getChildIndex(this._modalLayer);
        } else {
            i = cnt - 1;
        }

        const index = this.getChildIndex(win);
        if (index < i) {
            this.setChildIndex(win, i);
        }
    }

    /**
     * Get top window