Method updateState

src/container.ts:173–192

()

    }

    updateState() {
        var viewportTop = scrollTop(this.item);
        var viewportHeight = getViewportHeight(this.item);
        var contentHeight = getContentHeight(this.item);

        var needsRecalcuate =
            viewportHeight !== this.viewportHeight || contentHeight !== this.contentHeight;

        this.viewportTop = viewportTop;
        this.viewportHeight = viewportHeight;
        this.viewportBottom = viewportTop + viewportHeight;
        this.contentHeight = contentHeight;

        if (needsRecalcuate) {
            let i = this.watchers.length;
            while (i--) {
                this.watchers[i].recalculateLocation();
            }
        }
    }

    updateAndTriggerWatchers(event: ScrollEvent) {
        let i = this.watchers.length;