Method onRoleChanged

packages/core/ui/split-view/index.ios.ts:233–246

(view: View, oldValue: SplitRole, newValue: SplitRole)

	}

	public onRoleChanged(view: View, oldValue: SplitRole, newValue: SplitRole) {
		// Move child mapping to new role and resync
		const oldRole = this._findRoleByChild(view);
		if (oldRole) {
			const controller = this._controllers.get(oldRole);
			this._controllers.delete(oldRole);
			this._children.delete(oldRole);
			if (controller) {
				this._controllers.set(newValue, controller);
			}
			this._children.set(newValue, view);
			this._syncControllers();
		}
	}

	onSecondaryViewCollapsed(secondaryViewController: UIViewController, primaryViewController: UIViewController): void {
		// Default implementation: do nothing.