Method fixPosition

src/Autocomplete.ts:198–249

()

    }

    private fixPosition(): void {
        const $container = this.$container;
        const containerParent = $container.parent().get(0);

        if (containerParent !== document.body && !this.options.forceFixPosition) {
            return;
        }

        let orientation = this.options.orientation;
        const containerHeight = $container.outerHeight() ?? 0;
        const height = this.el.outerHeight() ?? 0;
        const offset = this.el.offset() ?? { top: 0, left: 0 };
        const styles: { top: number; left: number; width?: string } = {
            top: offset.top,
            left: offset.left,
        };

        if (orientation === "auto") {
            const viewPortHeight = $(window).height() ?? 0;
            const scrollTop = $(window).scrollTop() ?? 0;
            const topOverflow = -scrollTop + offset.top - containerHeight;
            const bottomOverflow =
                scrollTop + viewPortHeight - (offset.top + height + containerHeight);

            orientation = Math.max(topOverflow, bottomOverflow) === topOverflow ? "top" : "bottom";
        }

        styles.top += orientation === "top" ? -containerHeight : height;

        if (containerParent !== document.body && containerParent !== undefined) {
            const opacity = $container.css("opacity");

            if (!this.visible) {
                $container.css("opacity", 0).show();
            }

            const parentOffsetDiff = $container.offsetParent().offset() ?? { top: 0, left: 0 };
            styles.top -= parentOffsetDiff.top;
            styles.top += containerParent.scrollTop;
            styles.left -= parentOffsetDiff.left;

            if (!this.visible) {
                $container.css("opacity", opacity).hide();
            }
        }

        if (this.options.width === "auto") {
            styles.width = `${this.el.outerWidth() ?? 0}px`;
        }

        $container.css(styles);
    }

    private isCursorAtEnd(): boolean {
        const valLength = (this.el.val() as string).length;