Other Protocols

The following protocols are available globally.

  • Trait for the types that can be found in the fields property of form actions.

    Declaration

    Objective-C

    @protocol PSPDFFormFieldIdentifier <NSObject>

    Swift

    protocol PSPDFFormFieldIdentifier : NSObjectProtocol

  • Protocol for analytics events consumers. Implement this protocol to forward analytics events to an analytics service of your choice. To receive events you must register your PSPDFAnalyticsClient instance with -[PSPDFAnalytics addAnalyticsClient:] method.

    See more

    Declaration

    Objective-C

    @protocol PSPDFAnalyticsClient

    Swift

    protocol PDFAnalyticsClient

  • Delegate to be notified on signature actions.

    See more

    Declaration

    Objective-C

    @protocol PSPDFAnnotationGridViewControllerDelegate <NSObject>

    Swift

    protocol AnnotationGridViewControllerDelegate : NSObjectProtocol

  • Undocumented

    See more

    Declaration

    Objective-C

    @protocol PSPDFAnnotationGridViewControllerDataSource<NSObject>

/// Returns number of sections.
- (NSInteger)numberOfSectionsInAnnotationGridViewController:(PSPDFAnnotationGridViewController *)annotationGridController;

/// Returns number of annotation sets per `section`.
- (NSInteger)annotationGridViewController:(PSPDFAnnotationGridViewController *)annotationGridController numberOfAnnotationsInSection:(NSInteger)section;

/// Returns the annotation set for `indexPath`.
- (PSPDFAnnotationSet *)annotationGridViewController:(PSPDFAnnotationGridViewController *)annotationGridController annotationSetForIndexPath:(NSIndexPath *)indexPath;

@end

    Swift

    protocol AnnotationGridViewControllerDataSource : NSObjectProtocol

  • To be notified on any changes PSPDFKit does on your annotations, implement this notifier. It will be set as soon as your class is added to the annotationManager.

    See more

    Declaration

    Objective-C

    @protocol PSPDFAnnotationProviderChangeNotifier <NSObject>

    Swift

    protocol AnnotationProviderChangeNotifier : NSObjectProtocol

  • Delegate for callbacks related to annotation saving.

    See more

    Declaration

    Objective-C

    @protocol PSPDFAnnotationProviderDelegate <NSObject>

    Swift

    protocol AnnotationProviderDelegate : NSObjectProtocol

  • The annotation state manager delegate is informed of state changes.

    Note

    The manager class supports registering multiple delegate implementations.
    See more

    Declaration

    Objective-C

    @protocol PSPDFAnnotationStateManagerDelegate <NSObject>

    Swift

    protocol AnnotationStateManagerDelegate : NSObjectProtocol

  • Protocol adopted by PSPDFColorPreset and PSPDFBorderStylePreset.

    Declaration

    Objective-C

    @protocol PSPDFStylePreset <NSObject, NSSecureCoding>

    Swift

    protocol PSPDFStylePreset : NSSecureCoding, NSObjectProtocol

  • Delegate for AnnotationStyleViewController.

    See more

    Declaration

    Objective-C

    @protocol PSPDFAnnotationStyleViewControllerDelegate <NSObject>

    Swift

    protocol AnnotationStyleViewControllerDelegate : NSObjectProtocol

  • Delegate for the AnnotationTableViewController.

    See more

    Declaration

    Objective-C

    @protocol PSPDFAnnotationTableViewControllerDelegate <NSObject>

    Swift

    protocol AnnotationTableViewControllerDelegate : NSObjectProtocol

  • Undocumented

    See more

    Declaration

    Objective-C

    @protocol PSPDFAppearanceModeManagerDelegate<NSObject>

@optional

/// Provides the document render options for the specified mode.
///
/// @param manager A reference to the invoking appearance mode manager.
/// @param mode The mode that is about to be applied.
///
/// @note Overrides the default behavior, if implemented.
- (PSPDFRenderOptions *)appearanceManager:(PSPDFAppearanceModeManager *)manager renderOptionsForMode:(PSPDFAppearanceMode)mode;

@end

    Swift

    protocol AppearanceModeManagerDelegate : NSObjectProtocol

  • Custom sub-protocol of UIScrollViewDelegate with additional optional callbacks.

    See more

    Declaration

    Objective-C

    @protocol PSPDFAvoidingScrollViewDelegate <UIScrollViewDelegate>

    Swift

    protocol AvoidingScrollViewDelegate : UIScrollViewDelegate

  • An object to handle events from a BackForwardActionList.

    See more

    Declaration

    Objective-C

    @protocol PSPDFBackForwardActionListDelegate <NSObject>

    Swift

    protocol BackForwardActionListDelegate : NSObjectProtocol

  • Delegate when we use inline cell editing.

    See more

    Declaration

    Objective-C

    @protocol PSPDFBookmarkTableViewCellDelegate <NSObject>

    Swift

    protocol BookmarkTableViewCellDelegate : NSObjectProtocol

  • Delegate for the bookmark controller.

    See more

    Declaration

    Objective-C

    @protocol PSPDFBookmarkViewControllerDelegate <NSObject>

    Swift

    protocol BookmarkViewControllerDelegate : NSObjectProtocol

  • Delegate for signature status.

    See more

    Declaration

    Objective-C

    @protocol PSPDFCertificatePickerViewControllerDelegate <NSObject>

    Swift

    protocol CertificatePickerViewControllerDelegate : NSObjectProtocol

  • Undocumented

    See more

    Declaration

    Objective-C

    @protocol PSPDFConflictResolutionManagerDelegate <NSObject>

/// Invoked when the conflict resolution selection completes.
///
/// The implementing object should resolve the file conflict (externally removed or modified file) using the
/// selected conflict resolution option.
///
/// Designed to be invoked from: `controllerForFileDeletionResolutionOnDocument:dataProvider:dataProvider:` and
/// `controllerForExternalFileChangeResolutionOnDocument:dataProvider:dataProvider:`.
///
/// @param manager A reference to the resolution manager that invoked this call.
/// @param document The current document.
/// @param dataProvider The document's data provider that detected the file change.
/// @param resolution The conflict resolution option that should be performed.
/// @param error An optional error describing the failure.
/// @return YES, if the resolution was successful and no otherwise.
- (BOOL)resolutionManager:(PSPDFConflictResolutionManager *)manager requestingFileConflictResolutionForDocument:(PSPDFDocument *)document dataProvider:(id<PSPDFCoordinatedFileDataProviding>)dataProvider withResolution:(PSPDFFileConflictResolution)resolution error:(NSError **)error;

@optional

/// Invoked just before the conflict resolution UI is displayed.
///
/// This callback can be used to suppress UI presentation and instead perform a conflict resolution
/// action immediately.
///
/// @param manager A reference to the resolution manager that invoked this call.
/// @param document The current document.
/// @param dataProvider The document's data provider that detected the file change.
/// @param type The type of conflict that is being resolved.
/// @param resolution The conflict resolution option that should be performed. A default value is passed based on the conflict type. This can be modified by assigning a new value to `*resolution`.
- (BOOL)resolutionManager:(PSPDFConflictResolutionManager *)manager shouldPerformAutomaticResolutionForForDocument:(PSPDFDocument *)document dataProvider:(id<PSPDFCoordinatedFileDataProviding>)dataProvider conflictType:(PSPDFFileConflictType)type resolution:(inout PSPDFFileConflictResolution *)resolution;

/// Specifies the view controller that should be used for UI presentation.
///
/// If not implemented or if the specified view controller is not currently being displayed,
/// the topmost view controller reachable from last known window will be used to display UI during a conflict.
///
/// @note Called on the main thread.
///
/// @param manager A reference to the resolution manager that invoked this call.
/// @return A view controller suitable for modal UI presentation.
- (UIViewController *)viewControllerForPresentationForResolutionManager:(PSPDFConflictResolutionManager *)manager;

@end

    Swift

    protocol ConflictResolutionManagerDelegate : NSObjectProtocol

  • Delegate for events and customization of PSPDFContainerViewController.

    See more

    Declaration

    Objective-C

    @protocol PSPDFContainerViewControllerDelegate <NSObject>

    Swift

    protocol ContainerViewControllerDelegate : NSObjectProtocol

  • Protocol for handling page changes.

    See more

    Declaration

    Objective-C

    @protocol PSPDFPageControls <NSObject>

    Swift

    protocol PageControls : NSObjectProtocol

  • Protocol handling the user interface.

    See more

    Declaration

    Objective-C

    @protocol PSPDFUserInterfaceControls <NSObject>

    Swift

    protocol UserInterfaceControls : NSObjectProtocol

  • Handles state changes for a given document.

    See more

    Declaration

    Objective-C

    @protocol PSPDFControllerStateHandling <NSObject>

    Swift

    protocol ControllerStateHandling : NSObjectProtocol

  • Methods that need to be implemented by the coordinationDelegate of a coordinated file data provider. As such, all methods in this protocol are required.

    See more

    Declaration

    Objective-C

    @protocol PSPDFFileCoordinationDelegate <NSObject>

    Swift

    protocol FileCoordinationDelegate : NSObjectProtocol

  • Delegate to receive events regarding Document.

    This delegate offers callbacks for custom actions after save events.

    See more

    Declaration

    Objective-C

    @protocol PSPDFDocumentDelegate <NSObject>

    Swift

    protocol PDFDocumentDelegate : NSObjectProtocol

  • Delegate that can be implemented to be notified of changes that the document editor performs.

    See more

    Declaration

    Objective-C

    @protocol PSPDFDocumentEditorDelegate <NSObject>

    Swift

    protocol PDFDocumentEditorDelegate : NSObjectProtocol

  • Implemented in classes that use or modify the document editor configuration.

    See

    e.g. PSPDFNewPageViewController
    See more

    Declaration

    Objective-C

    @protocol PSPDFDocumentEditorConfigurationConfigurable <NSObject>

    Swift

    protocol PDFDocumentEditorConfigurationConfigurable : NSObjectProtocol

  • The delegate of PDFDocumentEditorToolbarController.

    See more

    Declaration

    Objective-C

    @protocol PSPDFDocumentEditorToolbarControllerDelegate <
    PSPDFFlexibleToolbarContainerDelegate>

    Swift

    protocol PDFDocumentEditorToolbarControllerDelegate : FlexibleToolbarContainerDelegate

  • A document feature source can disable various features if there are reasons within its controlled scope that make this feature unavailable.

    You can implement your own sources by conforming to this protocol. Besides the required methods you should only implement the features that your source actually control. The result of your source will be combined with the results of the framework’s sources through a logical AND. This means if your source disallows a feature this feature is no longer available, however if your source allows a feature there might still be other sources disallowing a feature. Only if all sources allow a feature, the feature will be enabled.

    Caching

    The results of all features you implement will be cached. Whenever the state of a feature changes, you need to call [features updateFeatures] for changes to take effect. This is also necessary to allow notifying interested observers about the change in state.

    Threading

    Your custom sources have to be thread safe. They are not guaranteed to be called on any particular queue.

    See more

    Declaration

    Objective-C

    @protocol PSPDFDocumentFeaturesSource <NSObject>

    Swift

    protocol PDFDocumentFeaturesSource : NSObjectProtocol

  • An observer will be returned to you when you start observing a feature for state changes. You can either keep the observer around for removing it later on or you can bind it to the lifetime of another class which will then remove the observer automatically when the other object gets deallocated.

    See more

    Declaration

    Objective-C

    @protocol PSPDFDocumentFeaturesObserver <NSObject>

    Swift

    protocol PDFDocumentFeaturesObserver : NSObjectProtocol

  • Conforming to this protocol indicated, that the view controller can be used in the document info coordinator.

    See more

    Declaration

    Objective-C

    @protocol PSPDFDocumentInfoController

    Swift

    protocol DocumentInfoController

  • Undocumented

    See more

    Declaration

    Objective-C

    @protocol PSPDFDocumentInfoCoordinatorDelegate<NSObject>

@optional

/// Notifies the delegate that the `PSPDFDocumentInfoViewController` has discarded the pending changes
/// and the controller is no longer in edit mode.
///
/// @param infoCoordinator     The coordinator.
/// @param infoViewController  The `PSPDFDocumentInfoViewController` that cancelled the update.
- (void)documentInfoCoordinator:(PSPDFDocumentInfoCoordinator *)infoCoordinator infoViewControllerDidCancelDocumentInfoUpdate:(PSPDFDocumentInfoViewController *)infoViewController;

/// Notifies the delegate that the info view controller has applied the specified updates to the underlying document. Use this method to update the UI if required.
///
/// @param infoCoordinator     The coordinator.
/// @param infoViewController  The controller that applied the updates.
- (void)documentInfoCoordinator:(PSPDFDocumentInfoCoordinator *)infoCoordinator infoViewControllerDidCommitUpdates:(PSPDFDocumentInfoViewController *)infoViewController;

@end

    Swift

    protocol PSPDFDocumentInfoCoordinatorDelegate : NSObjectProtocol

  • Undocumented

    See more

    Declaration

    Objective-C

    @protocol PSPDFDocumentInfoViewControllerDelegate

@optional
/// Notifies the delegate that the pending updates have been discarded and the controller is no longer
/// in edit mode.
///
/// @param infoController The `PSPDFDocumentInfoViewController` that cancelled the changes.
- (void)documentInfoViewControllerDidCancelUpdates:(PSPDFDocumentInfoViewController *)infoController;

/// Notifies the delegate that the updates have been applied to the underlying document.
///
/// @param infoController  The `PSPDFDocumentInfoViewController` that applied the changes.
-(void)documentInfoViewControllerDidCommitUpdates:(PSPDFDocumentInfoViewController *)infoController;

@end

    Swift

    protocol PSPDFDocumentInfoViewControllerDelegate

  • Document selector delegate.

    See more

    Declaration

    Objective-C

    @protocol PSPDFDocumentPickerControllerDelegate <NSObject>

    Swift

    protocol PDFDocumentPickerControllerDelegate : NSObjectProtocol

  • The delegate for the PDFDocumentSharingViewController

    See more

    Declaration

    Objective-C

    @protocol PSPDFDocumentSharingViewControllerDelegate <NSObject>

    Swift

    protocol PDFDocumentSharingViewControllerDelegate : NSObjectProtocol

  • Undocumented

    See more

    Declaration

    Objective-C

    @protocol PSPDFDocumentViewControllerDelegate <NSObject>
@optional

/// Called when the spread index changes.
///
/// @note This method is called even if the spread index was modified programmatically.
///
/// @param documentViewController The document view controller whose spread index changed.
/// @param oldSpreadIndex The old spread index, before it was changed.
- (void)documentViewController:(PSPDFDocumentViewController *)documentViewController didChangeSpreadIndex:(NSInteger)oldSpreadIndex;

/// Called when the continuous spread index changes.
///
/// @note This method is called constantly when scrolling. If you implement this method,
/// it should be fast. It is called even if the continuous spread index was modified
/// programmatically.
///
/// @param documentViewController The document view controller whose continuous spread index changed.
/// @param oldContinuousSpreadIndex The old continuous spread index, before it was changed.
- (void)documentViewController:(PSPDFDocumentViewController *)documentViewController didChangeContinuousSpreadIndex:(CGFloat)oldContinuousSpreadIndex;

/// Called whenever the zoom scale is updated.
///
/// @note This method will be called rapidly while the user is actively zooming in or out.
/// Make sure you do the minimum amount of work in this method.
///
/// @param documentViewController The document view controller the change occurred in.
/// @param zoomScale The new zoom scale.
/// @param spreadIndex The index of the spread that was zoomed or `NSNotFound` if the
/// zooming view is responsible for multiple spread views.
- (void)documentViewController:(PSPDFDocumentViewController *)documentViewController didUpdateZoomScale:(CGFloat)zoomScale forSpreadAtIndex:(NSInteger)spreadIndex;

/// Called when a spread view enters the bounds of the document view.
///
/// A spread is considered visible if at least one pixel of it is inside the document
/// view's bounds.
///
/// @see `-documentViewController:didEndDisplayingSpreadView:forSpreadAtIndex:`
///
/// @param documentViewController The document view controller the spread view belongs to.
/// @param spreadView The spread view that is entering the visible bounds.
/// @param spreadIndex The spread index the spread view represents.
- (void)documentViewController:(PSPDFDocumentViewController *)documentViewController willBeginDisplayingSpreadView:(PSPDFSpreadView *)spreadView forSpreadAtIndex:(NSInteger)spreadIndex;

/// Called when a spread view leaves the bounds of the document view.
///
/// A spread is considered visible if at least one pixel of it is inside the document
/// view's bounds.
///
/// @see `-documentViewController:willBeginDisplayingSpreadView:forSpreadAtIndex:`
///
/// @param documentViewController The document view controller the spread view belongs to.
/// @param spreadView The spread view that left the visible bounds.
/// @param spreadIndex The spread index the spread view represents.
- (void)documentViewController:(PSPDFDocumentViewController *)documentViewController didEndDisplayingSpreadView:(PSPDFSpreadView *)spreadView forSpreadAtIndex:(NSInteger)spreadIndex;

/// Called when a spread view is configured and added to the view hierarchy.
///
/// @see `-documentViewController:didCleanupSpreadView:forSpreadAtIndex:`
///
/// @param documentViewController The document view controller the spread view belongs to.
/// @param spreadView The spread view that was configured.
/// @param spreadIndex The spread index the spread view represents.
- (void)documentViewController:(PSPDFDocumentViewController *)documentViewController didConfigureSpreadView:(PSPDFSpreadView *)spreadView forSpreadAtIndex:(NSInteger)spreadIndex;

/// Called when a spread view is cleaned up and removed from the view hierarchy.
///
/// @see `-documentViewController:didConfigureSpreadView:forSpreadAtIndex:`
///
/// @param documentViewController The document view controller the spread view belongs to.
/// @param spreadView The spread view that was cleaned up.
/// @param spreadIndex The spread index the spread view represents.
- (void)documentViewController:(PSPDFDocumentViewController *)documentViewController didCleanupSpreadView:(PSPDFSpreadView *)spreadView forSpreadAtIndex:(NSInteger)spreadIndex;

/// Called when the document view controller is configuring the scroll view that is
/// responsible for scrolling the spreads.
///
/// It is safe to assign a delegate to the `UIScrollView` object received in this delegate.
///
/// @note This delegate method might be called multiple times throughout the lifetime
/// of the scroll view.
///
/// @warning Do not capture the existing scroll view delegate to relay calls - this is handled internally.
///
/// @param documentViewController The document view controller the scroll view belongs to.
/// @param scrollView The scroll view being configured.
- (void)documentViewController:(PSPDFDocumentViewController *)documentViewController configureScrollView:(UIScrollView *)scrollView;

/// Called when the document view controller is configuring a scroll view that is responsible
/// for zooming one or multiple spreads.
///
/// It is safe to assign a delegate to the `UIScrollView` object received in this delegate.
///
/// @note This delegate method might be called multiple times throughout the lifetime
/// of the scroll view.
///
/// @note In some layouts the zoom view is equal to the scroll view responsible for
/// scrolling the spreads. Therefore configuring the zoom view can have an impact
/// on the scrolling behavior.
///
/// @warning Do not capture the existing scroll view delegate to relay calls - this is handled internally.
///
/// @param documentViewController The document view controller the zoom view belongs to.
/// @param zoomView The zoom view being configured.
/// @param spreadIndex The index of the spread the zoom view is displaying or `NSNotFound`
/// if the zoom view is responsible for multiple spreads.
- (void)documentViewController:(PSPDFDocumentViewController *)documentViewController configureZoomView:(UIScrollView *)zoomView forSpreadAtIndex:(NSInteger)spreadIndex;

@end

    Swift

    protocol PDFDocumentViewControllerDelegate : NSObjectProtocol

  • Notifies of download related events.

    See more

    Declaration

    Objective-C

    @protocol PSPDFDownloadManagerDelegate <NSObject>

    Swift

    protocol DownloadManagerDelegate : NSObjectProtocol

  • A delegate that is notified when the draw view begins or ends drawing a stroke. The implementation of these calls should persist the annotation changes to the document as well as recording the changes for undo.

    See more

    Declaration

    Objective-C

    @protocol PSPDFDrawViewDelegate <NSObject>

    Swift

    protocol DrawViewDelegate : NSObjectProtocol

  • Delegate for the PSPDFEmbeddedFilesViewController.

    See more

    Declaration

    Objective-C

    @protocol PSPDFEmbeddedFilesViewControllerDelegate <NSObject>

    Swift

    protocol EmbeddedFilesViewControllerDelegate : NSObjectProtocol

  • Specifies how the eraser overlay should look and behave.

    See more

    Declaration

    Objective-C

    @protocol PSPDFEraseOverlayDataSource <NSObject>

    Swift

    protocol EraseOverlayDataSource : NSObjectProtocol

  • The PSPDFExternalSignature protocol is adopted by an object that provides an external signature for a PDF document. You set the externalSignatureDelegate property in a PSPDFSigner class or subclass when you want to control the digital signing process with an external signature (for example, a signature that is implemented by a hardware device or by an external webservice).

    See more

    Declaration

    Objective-C

    @protocol PSPDFExternalSignature <NSObject>

    Swift

    protocol ExternalSignature : NSObjectProtocol

  • Undocumented

    See more

    Declaration

    Objective-C

    @protocol PSPDFFlexibleToolbarDelegate<NSObject>

@optional

/// The toolbar container will be displayed (called before `showToolbarAnimated:completion:` is performed).
- (void)flexibleToolbarWillShow:(PSPDFFlexibleToolbar *)toolbar;

/// The toolbar container has been displayed (called after `showToolbarAnimated:completion:` is performed).
- (void)flexibleToolbarDidShow:(PSPDFFlexibleToolbar *)toolbar;

/// The toolbar container will be hidden (called before `hideToolbarAnimated:completion:` is performed).
- (void)flexibleToolbarWillHide:(PSPDFFlexibleToolbar *)toolbar;

/// The toolbar container has been hidden (called after `hideToolbarAnimated:completion:` is performed).
- (void)flexibleToolbarDidHide:(PSPDFFlexibleToolbar *)toolbar;

/// Called whenever the flexible toolbar changes position in response to a user drag & drop action
- (void)flexibleToolbar:(PSPDFFlexibleToolbar *)toolbar didChangePosition:(PSPDFFlexibleToolbarPosition)position;

@end

    Swift

    protocol FlexibleToolbarDelegate : NSObjectProtocol

  • Delegate for the flexible toolbar container.

    See

    PSPDFFlexibleToolbarContainer
    See more

    Declaration

    Objective-C

    @protocol PSPDFFlexibleToolbarContainerDelegate <NSObject>

    Swift

    protocol FlexibleToolbarContainerDelegate : NSObjectProtocol

  • Designates common UIToolbar or UINavigationBar functionality.

    Declaration

    Objective-C

    @protocol PSPDFSystemBar <NSObject>

    Swift

    protocol SystemBar : NSObjectProtocol

  • Delegate for PSPDFFontPickerViewController, calls back when a font is selected.

    See more

    Declaration

    Objective-C

    @protocol PSPDFFontPickerViewControllerDelegate <NSObject>

    Swift

    protocol FontPickerViewControllerDelegate : NSObjectProtocol

  • Delegate to receive actions from the free text accessory view.

    See more

    Declaration

    Objective-C

    @protocol PSPDFFreeTextAccessoryViewDelegate <NSObject>

    Swift

    protocol FreeTextAccessoryViewDelegate : NSObjectProtocol

  • Protocol for UIViews that wish to be the loadingView of a PSPDFGalleryContentView.

    See more

    Declaration

    Objective-C

    @protocol PSPDFGalleryContentViewLoading <NSObject>

    Swift

    protocol GalleryContentViewLoading : NSObjectProtocol

  • Protocol for UIViews that wish to be the errorView of a PSPDFGalleryContentView.

    See more

    Declaration

    Objective-C

    @protocol PSPDFGalleryContentViewError <NSObject>

    Swift

    protocol GalleryContentViewError : NSObjectProtocol

  • Protocol for UIViews that wish to be the captionView of a PSPDFGalleryContentView.

    See more

    Declaration

    Objective-C

    @protocol PSPDFGalleryContentViewCaption <NSObject>

    Swift

    protocol GalleryContentViewCaption : NSObjectProtocol

  • Undocumented

    See more

    Declaration

    Objective-C

    @protocol PSPDFGalleryViewDataSource<NSObject>

/// The number if items in a gallery.
- (NSUInteger)numberOfItemsInGalleryView:(PSPDFGalleryView *)galleryView;

/// The content view for the given index.
- (PSPDFGalleryContentView *)galleryView:(PSPDFGalleryView *)galleryView contentViewForItemAtIndex:(NSUInteger)index;

@end

    Swift

    protocol GalleryViewDataSource : NSObjectProtocol

  • Undocumented

    See more

    Declaration

    Objective-C

    @protocol PSPDFGalleryViewDelegate<UIScrollViewDelegate>

@optional

/// Called when `currentItemIndex` changes.
- (void)galleryView:(PSPDFGalleryView *)galleryView willScrollToItemAtIndex:(NSUInteger)index;
- (void)galleryView:(PSPDFGalleryView *)galleryView didScrollToItemAtIndex:(NSUInteger)index;

/// Called before reusing a content view.
- (void)galleryView:(PSPDFGalleryView *)galleryView willReuseContentView:(PSPDFGalleryContentView *)contentView;

@end

    Swift

    protocol GalleryViewDelegate : UIScrollViewDelegate

  • Delegate informing about image selection and editing in PSPDFImagePickerController.

    See more

    Declaration

    Objective-C

    @protocol PSPDFImagePickerControllerDelegate <NSObject>

    Swift

    protocol ImagePickerControllerDelegate : NSObjectProtocol

  • The delegate for the InlineSearchManager class.

    See more

    Declaration

    Objective-C

    @protocol PSPDFInlineSearchManagerDelegate <PSPDFTextSearchDelegate>

    Swift

    protocol InlineSearchManagerDelegate : TextSearchDelegate

  • The delegate of a PSPDFInstantClient must adopt this protocol to be notified of download and authentication events.

    Delegates that are interested in events around the sync cycle can also implement the optional methods listed in the “Sync Events” section. For a more detailed explanation of the sync cycle of a document and its possible states, please refer to the documentation on PSPDFInstantDocumentState.

    If you need multiple observers or are only interested in the events of a single document, you can use the notifications posted by PSPDFInstantDocumentDescriptor.

    Note

    Important: All methods in this protocol will be called on a background thread!
    See more

    Declaration

    Objective-C

    @protocol PSPDFInstantClientDelegate <NSObject>

    Swift

    protocol InstantClientDelegate : NSObjectProtocol

  • The PSPDFLibraryDataSource protocol is adopted by an object that provides the documents to be indexed by a PSPDFLibrary. These methods will not be called on the main queue, and can take long to execute. If you are implementing this protocol yourself and not using PSPDFLibraryFileSystemDataSource, please read the documentation carefully.

    See more

    Declaration

    Objective-C

    @protocol PSPDFLibraryDataSource <NSObject>

    Swift

    protocol LibraryDataSource : NSObjectProtocol

  • This protocol defines a method to override the document that the LibraryFileSystemDataSource provides to the PDFLibrary.

    See more

    Declaration

    Objective-C

    @protocol PSPDFLibraryFileSystemDataSourceDocumentProvider <NSObject>

    Swift

    protocol LibraryFileSystemDataSourceDocumentProvider : NSObjectProtocol

  • Delegate for callbacks on the state of the link annotation editing container view controller.

    See more

    Declaration

    Objective-C

    @protocol PSPDFLinkAnnotationEditingContainerViewControllerDelegate <NSObject>

    Swift

    protocol LinkAnnotationEditingContainerViewControllerDelegate : NSObjectProtocol

  • Protocol for delegate actions of the link annotation editing view controller.

    See more

    Declaration

    Objective-C

    @protocol PSPDFLinkAnnotationEditingViewControllerDelegate <NSObject>

    Swift

    protocol LinkAnnotationEditingViewControllerDelegate : NSObjectProtocol

  • Delegate informing about state changes of the media player controller.

    See more

    Declaration

    Objective-C

    @protocol PSPDFMediaPlayerControllerDelegate <NSObject>

    Swift

    protocol MediaPlayerControllerDelegate : NSObjectProtocol

  • Undocumented

    See more

    Declaration

    Objective-C

    @protocol PSPDFMultiDocumentListControllerDelegate<NSObject>

@optional

/// Informs the delegate that the user selected a document from the list.
/// Typically, the presenting view controller will implement this method to dismiss the multi-document list controller.
///
/// @note The multi-document list controller automatically changes the visible document of its `tabbedViewController` at the same time as calling this method.
- (void)multiDocumentListController:(PSPDFMultiDocumentListController *)multiDocumentListController didSelectDocumentAtIndex:(NSUInteger)idx;

/// Informs the delegate that the user tapped the cancel button in the navigation bar containing the multi-document list controller.
/// By default, the multi-document list controller sets a cancel button as the `leftBarButtonItem` of its `navigationItem`.
/// This method will not be called if the multi-document list controller is not inside a navigation controller.
- (void)multiDocumentListControllerDidCancel:(PSPDFMultiDocumentListController *)multiDocumentListController;

@end

    Swift

    protocol MultiDocumentListControllerDelegate : NSObjectProtocol

  • Delegate for the PSPDFMultiDocumentViewController.

    See more

    Declaration

    Objective-C

    @protocol PSPDFMultiDocumentViewControllerDelegate <NSObject>

    Swift

    protocol MultiDocumentViewControllerDelegate : NSObjectProtocol

  • Delegate that allows connecting a PSPDFNewPageViewController to receive the event when a selection has been chosen.

    See more

    Declaration

    Objective-C

    @protocol PSPDFNewPageViewControllerDelegate <NSObject>

    Swift

    protocol PDFNewPageViewControllerDelegate : NSObjectProtocol

  • Undocumented

    See more

    Declaration

    Objective-C

    @protocol PSPDFNewPageViewControllerDataSource<NSObject>

@optional
/// Optional method. Called when the new page view controller is being configured.
///
/// The return value of this method's implementation is used to determine the correct
/// title for the "Add page" button on the `PSPDFNewPageViewController` instance.
///
/// @param controller  The controller that's calling this method.
///
/// @return Integer with the index of the first item that's selected and will serve as insertion point reference. If no index is selected, return `NSNotFound`. If this method is not implemented, `NSNotFound` is used.
- (PSPDFPageIndex)selectedIndexForNewPageViewController:(PSPDFNewPageViewController *)controller;

@end

    Swift

    protocol PDFNewPageViewControllerDataSource : NSObjectProtocol

  • Undocumented

    See more

    Declaration

    Objective-C

    @protocol PSPDFNoteAnnotationViewControllerDelegate<NSObject>

@optional

/// Called when the `noteController` has deleted the parent annotation.
/// Not called when any of the comments has been deleted.
- (void)noteAnnotationController:(PSPDFNoteAnnotationViewController *)noteController didDeleteAnnotation:(PSPDFAnnotation *)annotation;

/// Called when the `noteController` has cleared the contents of the annotation.
- (void)noteAnnotationController:(PSPDFNoteAnnotationViewController *)noteController didClearContentsForAnnotation:(PSPDFAnnotation *)annotation;

/// Called when the `noteController` changes the annotation’s contents, color, or iconName.
- (void)noteAnnotationController:(PSPDFNoteAnnotationViewController *)noteController didChangeAnnotation:(PSPDFAnnotation *)annotation;

/// Called before the `noteController` is closed.
- (void)noteAnnotationController:(PSPDFNoteAnnotationViewController *)noteController willDismissWithAnnotation:(nullable PSPDFAnnotation *)annotation;

@end

    Swift

    protocol NoteAnnotationViewControllerDelegate : NSObjectProtocol

  • The delegate of an outline cell.

    See more

    Declaration

    Objective-C

    @protocol PSPDFOutlineCellDelegate <NSObject>

    Swift

    protocol OutlineCellDelegate : NSObjectProtocol

  • Delegate for the OutlineViewController.

    See more

    Declaration

    Objective-C

    @protocol PSPDFOutlineViewControllerDelegate <NSObject>

    Swift

    protocol OutlineViewControllerDelegate : NSObjectProtocol

  • This protocol contains information about an image request.

    See more

    Declaration

    Objective-C

    @protocol PSPDFPageCellImageRequestToken <NSObject>

    Swift

    protocol PDFPageCellImageRequestToken : NSObjectProtocol

  • This protocol is responsible for loading images and providing it to the PSPDFPageCell whenever requested by it.

    See more

    Declaration

    Objective-C

    @protocol PSPDFPageCellImageLoading <NSObject>

    Swift

    protocol PDFPageCellImageLoading : NSObjectProtocol

  • Handles touches of the thumbnail grid button in the page label view.

    See more

    Declaration

    Objective-C

    @protocol PSPDFPageLabelViewDelegate <NSObject>

    Swift

    protocol PageLabelViewDelegate : NSObjectProtocol

  • Implement this delegate to get rendered pages. (Most of the times, you want to use PDFCache instead)

    See more

    Declaration

    Objective-C

    @protocol PSPDFRenderTaskDelegate <NSObject>

    Swift

    protocol RenderTaskDelegate : NSObjectProtocol

  • Delegate to be notified on session begin/end and frame changes.

    See more

    Declaration

    Objective-C

    @protocol PSPDFResizableViewDelegate <NSObject>

    Swift

    protocol ResizableViewDelegate : NSObjectProtocol

  • Required methods for views that represent resizable view knobs.

    See more

    Declaration

    Objective-C

    @protocol PSPDFKnobView <NSObject>

    Swift

    protocol KnobView : NSObjectProtocol

  • Undocumented

    See more

    Declaration

    Objective-C

    @protocol PSPDFSaveViewControllerDelegate<NSObject>

/// Called when the done button is pressed, and the file should be saved to the selected location.
/// The delegate needs to handle the actual saving process.
///
/// @note This will be called with a temporary URL if `PSPDFDirectory.documentPickerDirectory` has been selected,
/// to allow the document picker to move the file to the final location. You should not rely on that file to persist at the temporary location.
///
/// @param controller The current save view controller.
/// @param url The URL the file should be saved to, considering the current `selectedSaveDirectory`.
/// @param completionHandler Call the completion handler once saving finished with the final URL the file was saved to,
/// or if an error occurred before or during saving.
/// If an error is provided, an alert is shown with the error's `localizedDescription` as content.
- (void)saveViewController:(PSPDFSaveViewController *)controller saveFileToURL:(NSURL *)url completionHandler:(void (^)(NSURL *_Nullable url, NSError *_Nullable error))completionHandler;

/// Called when the save view controller finished with a selected URL.
/// This will only ever be called after the completion handler of
/// `-saveViewController:saveFileToURL:completionHandler:` has been called.
///
/// You should dismiss the save controller in this delegate.
- (void)saveViewController:(PSPDFSaveViewController *)controller didFinishWithURL:(NSURL *)url;

/// Called when the directory save view controller cancelled.
/// You should dismiss the save controller in this delegate.
- (void)saveViewControllerDidCancel:(PSPDFSaveViewController *)controller;

@end

    Swift

    protocol SaveViewControllerDelegate : NSObjectProtocol

  • Undocumented

    See more

    Declaration

    Objective-C

    @protocol PSPDFScreenControllerDelegate<NSObject>

@optional

/// Started mirroring on `screen`.
///
/// This delegate is called after the `UIWindow` has been created and the `rootViewController` is configured.
/// Use this for additional customization.
///
/// @note Replacing the `rootViewController` on the mirroring window is supported,
/// as long as the `PDFViewController` is correctly registered as a child view controller.
///
/// Use `mirrorControllerForScreen:` to access the window if required.
- (void)screenController:(PSPDFScreenController *)screenController didStartMirroringForScreen:(UIScreen *)screen;

/// Stopped mirroring on `screen`.
///
/// This delegate is called after the mirroring window is hidden and is about to be deallocated.
- (void)screenController:(PSPDFScreenController *)screenController didStopMirroringForScreen:(UIScreen *)screen;

/// Implement this method to return a custom controller that should be used for mirroring.
/// If you return a custom controller, ensure that it is configured correctly.
///
/// This is called just before mirroring starts.
///
/// @note The default implementation uses various sensible options such as
/// hiding the thumbnail bar, document label and page label. It also completely mirrors the most relevant
/// configuration settings of the original controller.
///
/// @warning `PageTransition.scrollPerSpread` is the only supported page mode for mirroring currently.
///
/// Gallery considerations: We recommend at least following options to ensure the gallery works as expected:
/// `builder.allowPlayingMultipleInstances = YES;`
/// `builder.usesExternalPlaybackWhileExternalScreenIsActive = NO;`
/// See `galleryConfiguration` on `PDFConfiguration` for details.
- (PSPDFViewController *)createPDFViewControllerForMirroring:(PSPDFScreenController *)screenController;

/// This delegate can be used to decide whether the mirrored controller should copy the configuration of the original controller or not.
///
/// If not implemented, defaults to YES.
- (BOOL)screenController:(PSPDFScreenController *)screenController shouldSyncConfigurationTo:(PSPDFViewController *)mirroredPDFController;

@end

    Swift

    protocol ScreenControllerDelegate : NSObjectProtocol

  • Implement this delegate to get notified of scrubber bar events.

    See more

    Declaration

    Objective-C

    @protocol PSPDFScrubberBarDelegate <NSObject>

    Swift

    protocol ScrubberBarDelegate : NSObjectProtocol

  • The data source for the SearchHighlightViewManager to coordinate animations and highlighting.

    See more

    Declaration

    Objective-C

    @protocol PSPDFSearchHighlightViewManagerDataSource <NSObject>

    Swift

    protocol SearchHighlightViewManagerDataSource : NSObjectProtocol

  • Protocol to integrate in a custom search result cell.

    See more

    Declaration

    Objective-C

    @protocol PSPDFSearchResultViewable <NSObject>

    Swift

    protocol SearchResultViewable : NSObjectProtocol

  • Protocol to integrate in a custom header view that represents the scope of the current section.

    See more

    Declaration

    Objective-C

    @protocol PSPDFSearchScopeViewable <NSObject>

    Swift

    protocol SearchScopeViewable : NSObjectProtocol

  • Protocol to integrate in a custom footer view that represents the current search status.

    See more

    Declaration

    Objective-C

    @protocol PSPDFSearchStatusViewable <NSObject>

    Swift

    protocol SearchStatusViewable : NSObjectProtocol

  • Delegate for the search view controller.

    Note

    This is a specialization of PSPDFTextSearchDelegate.
    See more

    Declaration

    Objective-C

    @protocol PSPDFSearchViewControllerDelegate <PSPDFTextSearchDelegate>

    Swift

    protocol SearchViewControllerDelegate : TextSearchDelegate

  • Delegate for selection related events.

    See more

    Declaration

    Objective-C

    @protocol PSPDFSelectionViewDelegate <NSObject>

    Swift

    protocol SelectionViewDelegate : NSObjectProtocol

  • Delegate to be notified when the PSPDFSignatureSelectorViewController has a valid selection.

    See more

    Declaration

    Objective-C

    @protocol PSPDFSignatureSelectorViewControllerDelegate <NSObject>

    Swift

    protocol SignatureSelectorViewControllerDelegate : NSObjectProtocol

  • Delegate to be notified on signature actions.

    See more

    Declaration

    Objective-C

    @protocol PSPDFSignatureViewControllerDelegate <NSObject>

    Swift

    protocol SignatureViewControllerDelegate : NSObjectProtocol

  • Undocumented

    See more

    Declaration

    Objective-C

    @protocol PSPDFSignedFormElementViewControllerDelegate<NSObject>

@optional

/// Called when a signature was successfully removed from the document.
- (void)signedFormElementViewController:(PSPDFSignedFormElementViewController *)controller removedSignatureFromDocument:(PSPDFDocument *)document;

@end

    Swift

    protocol SignedFormElementViewControllerDelegate : NSObjectProtocol

  • Undocumented

    See more

    Declaration

    Objective-C

    @protocol PSPDFStatusHUDItemDelegate
- (void)statusHUDItemDidTapActionButton:(nullable PSPDFStatusHUDItem *)hudItem;
@end

    Swift

    protocol PSPDFStatusHUDItemDelegate

  • Delegate for the PDFTabbedViewController.

    See more

    Declaration

    Objective-C

    @protocol
    PSPDFTabbedViewControllerDelegate <PSPDFMultiDocumentViewControllerDelegate>

    Swift

    protocol PDFTabbedViewControllerDelegate : MultiDocumentViewControllerDelegate

  • Search status delegate. All delegates are guaranteed to be called within the main thread.

    See more

    Declaration

    Objective-C

    @protocol PSPDFTextSearchDelegate <NSObject>

    Swift

    protocol TextSearchDelegate : NSObjectProtocol

  • The delegate protocol for PSPDFTextSelectionView.

    See more

    Declaration

    Objective-C

    @protocol PSPDFTextSelectionViewDelegate <NSObject>

    Swift

    protocol TextSelectionViewDelegate : NSObjectProtocol

  • Delegate to be notified on actions.

    See more

    Declaration

    Objective-C

    @protocol PSPDFTextStampViewControllerDelegate <NSObject>

    Swift

    protocol TextStampViewControllerDelegate : NSObjectProtocol

  • Delegate for thumbnail actions.

    See more

    Declaration

    Objective-C

    @protocol PSPDFThumbnailBarDelegate <NSObject>

    Swift

    protocol ThumbnailBarDelegate : NSObjectProtocol

  • Delegate for the collection view thumbnail flow layout.

    See more

    Declaration

    Objective-C

    @protocol PSPDFCollectionViewDelegateThumbnailFlowLayout <NSObject>

    Swift

    protocol CollectionViewDelegateThumbnailFlowLayout : NSObjectProtocol

  • Delegate for thumbnail actions.

    See more

    Declaration

    Objective-C

    @protocol PSPDFThumbnailViewControllerDelegate <NSObject>

    Swift

    protocol ThumbnailViewControllerDelegate : NSObjectProtocol

  • Delegate for the PSPDFWebViewController to customize URL handling.

    See more

    Declaration

    Objective-C

    @protocol PSPDFWebViewControllerDelegate <PSPDFExternalURLHandler>

    Swift

    protocol WebViewControllerDelegate : ExternalURLHandler

  • A type that keeps track of undoable commands and works together with the system undo manager to provide the undo/redo functionality for documents.

    You can use the undo controller to record new commands, and you can use the underlying undo manager to actually perform undo/redo.

    Recording Commands

    The undo/redo stacks contain commands that consist of one or more actions. You can add new commands to the undo stack by asking the undo controller for a recorder and using it to record multiple actions.

    undoController.recordCommand(named: "Replace Annotation") { recorder in
    recorder.record(removing: [squareAnnotation]) {
        document.remove(annotations: [squareAnnotation])
    }
    recorder.record(adding: [circleAnnotation]) {
        document.add(annotations: [circleAnnotation])
    }
}

    If you want to record a new command that consists only of one type of action, you can use the convenience functions instead.

    undoController.recordCommand(named: "Change Font Size", changing: [freeTextAnnotation]) {
    freeTextAnnotation.fontSize = 32
    freeTextAnnotation.sizeToFit()
}

    If you want to record actions that happen asynchronously over time, you can ask the undo controller for a detached recorder instead and commit it at the end.

    let recorder = undoController.beginRecordingCommand(named: "Rotate Annotation", changing: [stampAnnotation])
// Allow the user to rotate the stamp annotation.
recorder.commit()

    Undone commands automatically end up on the redo stack. You can’t add new commands to the redo stack yourself.

    Performing Undo and Redo

    The undo controller integrates with the system undo manager to provide the best and most natural undo/redo experience. Use it to check if undo/redo is possible and to perform it.

    if undoController.undoManager.canUndo {
    undoController.undoManager.undo()
}

    Observing Stacks

    You can observe the undo manager’s notifications if you need to respond to changes in the undo/redo stack. See the documentation of UndoManager for the complete list of observable notifications.

    PSPDF_EXPORT(PSPDFUndoController)

    See more

    Declaration

    Swift

    @objc(PSPDFUndoController)
public protocol UndoController

  • A type yielded by an undo controller that allows recording multiple undoable actions grouped as one undoable command.

    PSPDF_EXPORT(PSPDFUndoRecorder)

    See more

    Declaration

    Swift

    @objc(PSPDFUndoRecorder)
public protocol UndoRecorder

  • A type of recorder that can be taken out of the scope managed by an undo controller to record undoable actions over time until manually committed.

    PSPDF_EXPORT(PSPDFDetachedUndoRecorder)

    See more

    Declaration

    Swift

    @objc(PSPDFDetachedUndoRecorder)
public protocol DetachedUndoRecorder : PendingUndoRecorder, UndoRecorder

  • A type of recorder that has begun recording actions and is waiting to be manually committed.

    PSPDF_EXPORT(PSPDFPendingUndoRecorder)

    See more

    Declaration

    Swift

    @objc(PSPDFPendingUndoRecorder)
public protocol PendingUndoRecorder

  • A protocol implemented by types that can store annotation sets somewhere and load them later. Annotation set stores are used for the Saved Annotations feature.

    PSPDF_EXPORT(PSPDFAnnotationSetStore)

    See more

    Declaration

    Swift

    @objc(PSPDFAnnotationSetStore)
public protocol AnnotationSetStore

  • A delegate protocol of the document alignment view controller.

    PSPDF_EXPORT(PSPDFDocumentAlignmentViewControllerDelegate)

    See more

    Declaration

    Swift

    @objc(PSPDFDocumentAlignmentViewControllerDelegate)
public protocol DocumentAlignmentViewControllerDelegate

  • An object that receives callbacks from a signature creation view controller.

    PSPDF_EXPORT(PSPDFSignatureCreationViewControllerDelegate)

    See more

    Declaration

    Swift

    @objc(PSPDFSignatureCreationViewControllerDelegate)
public protocol SignatureCreationViewControllerDelegate : NSObjectProtocol