Method _horizontal

src/js/WinJS/Controls/SplitView/_SplitView.ts:636–638

()

    }

    private get _horizontal(): boolean {
        return this.panePlacement === PanePlacement.left || this.panePlacement === PanePlacement.right;
    }

    private _getHiddenPaneThickness(): IThickness {
        if (this._cachedHiddenPaneThickness === null) {