Section:

List container to customize horizontal menu layout on iOS

The PTNavigationListsViewController class is a container view controller that shows the annotation list, document outline, and user-defined bookmark list controls with a UITabBarController-like interface. A segmented control is used to select which child view controller to display.

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The navigation lists control is part of the Tools library, so make sure you have added the Tools library to your project.

Show a navigation lists view controller

To create a new navigation lists view controller and display it from another view controller, set the child list view controllers to the PTNavigationListsViewController class's listViewControllers property:

1// Initialize a new navigation lists view controller.
2let navigationListsViewController = PTNavigationListsViewController(toolManager: toolManager)
3
4// Initialize an annotation, outline, and bookmark view controller with a PTPDFViewCtrl instance.
5let annotationViewController = PTAnnotationViewController(pdfViewCtrl: pdfViewCtrl)
6annotationViewController.delegate = self
7
8let outlineViewController = PTOutlineViewController(pdfViewCtrl: pdfViewCtrl)
9outlineViewController.delegate = self
10
11let bookmarkViewController = PTBookmarkViewController(pdfViewCtrl: pdfViewCtrl)
12bookmarkViewController.delegate = self
13
14// Set the array of child view controllers to display.
15navigationListsViewController.listViewControllers = [outlineViewController, annotationViewController, bookmarkViewController]
16
17if ( UIDevice.current.userInterfaceIdiom == .pad ) {
18    navigationListsViewController.modalPresentationStyle = .popover
19    navigationListsViewController.popoverPresentationController?.barButtonItem = navigationListsButton
20} else {
21    navigationListsViewController.modalPresentationStyle = .fullScreen
22}
23
24self.present(navigationListsViewController, animated: true, completion: nil)

Presenting on iPads:

The navigation list view controller is designed to be presented in a popover on iPads. To do so, you must provide the PTNavigationListsViewController's UIPopoverPresentationController with either:

OR

as in the example above.

Customization

The PTNavigationListViewController provides a flexible API for displaying only the desired child view controllers. Any of the annotation list, document outline, or user-defined bookmark list view controllers can be removed by omitting them from the listViewControllers property. It is also possible to add a custom child view controller by adding it to the listViewControllers array.

To specify which of the child view controllers to display on opening the navigation list control, either the selectedIndex , or the selectedViewController property can be used.

1// Add a custom view controller to an existing navigation list control
2let customViewController = UIViewController()
3navigationListsViewController.listViewControllers?.append(customViewController)
4
5// Show the navigationListsViewController's annotationViewController on opening
6navigationListsViewController.selectedViewController = navigationListsViewController.annotationViewController
7// OR specify an index to show from the `listViewControllers` property
8navigationListsViewController.selectedIndex = 0

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