//! This file has been automatically generated by `objc2`'s `header-translator`.
//! DO NOT EDIT
use objc2::__framework_prelude::*;
use objc2_foundation::*;

use crate::*;

// NS_ENUM
#[repr(transparent)]
#[derive(Clone, Copy, Debug, PartialEq, Eq, Hash, PartialOrd, Ord)]
pub struct NSCollectionViewDropOperation(pub NSInteger);
impl NSCollectionViewDropOperation {
    pub const NSCollectionViewDropOn: Self = Self(0);
    pub const NSCollectionViewDropBefore: Self = Self(1);
}

unsafe impl Encode for NSCollectionViewDropOperation {
    const ENCODING: Encoding = NSInteger::ENCODING;
}

unsafe impl RefEncode for NSCollectionViewDropOperation {
    const ENCODING_REF: Encoding = Encoding::Pointer(&Self::ENCODING);
}

// NS_ENUM
#[repr(transparent)]
#[derive(Clone, Copy, Debug, PartialEq, Eq, Hash, PartialOrd, Ord)]
pub struct NSCollectionViewItemHighlightState(pub NSInteger);
impl NSCollectionViewItemHighlightState {
    pub const NSCollectionViewItemHighlightNone: Self = Self(0);
    pub const NSCollectionViewItemHighlightForSelection: Self = Self(1);
    pub const NSCollectionViewItemHighlightForDeselection: Self = Self(2);
    pub const NSCollectionViewItemHighlightAsDropTarget: Self = Self(3);
}

unsafe impl Encode for NSCollectionViewItemHighlightState {
    const ENCODING: Encoding = NSInteger::ENCODING;
}

unsafe impl RefEncode for NSCollectionViewItemHighlightState {
    const ENCODING_REF: Encoding = Encoding::Pointer(&Self::ENCODING);
}

// NS_OPTIONS
#[repr(transparent)]
#[derive(Clone, Copy, Debug, PartialEq, Eq, Hash, PartialOrd, Ord)]
pub struct NSCollectionViewScrollPosition(pub NSUInteger);
bitflags::bitflags! {
    impl NSCollectionViewScrollPosition: NSUInteger {
        #[doc(alias = "NSCollectionViewScrollPositionNone")]
        const None = 0;
        #[doc(alias = "NSCollectionViewScrollPositionTop")]
        const Top = 1<<0;
        #[doc(alias = "NSCollectionViewScrollPositionCenteredVertically")]
        const CenteredVertically = 1<<1;
        #[doc(alias = "NSCollectionViewScrollPositionBottom")]
        const Bottom = 1<<2;
        #[doc(alias = "NSCollectionViewScrollPositionNearestHorizontalEdge")]
        const NearestHorizontalEdge = 1<<9;
        #[doc(alias = "NSCollectionViewScrollPositionLeft")]
        const Left = 1<<3;
        #[doc(alias = "NSCollectionViewScrollPositionCenteredHorizontally")]
        const CenteredHorizontally = 1<<4;
        #[doc(alias = "NSCollectionViewScrollPositionRight")]
        const Right = 1<<5;
        #[doc(alias = "NSCollectionViewScrollPositionLeadingEdge")]
        const LeadingEdge = 1<<6;
        #[doc(alias = "NSCollectionViewScrollPositionTrailingEdge")]
        const TrailingEdge = 1<<7;
        #[doc(alias = "NSCollectionViewScrollPositionNearestVerticalEdge")]
        const NearestVerticalEdge = 1<<8;
    }
}

unsafe impl Encode for NSCollectionViewScrollPosition {
    const ENCODING: Encoding = NSUInteger::ENCODING;
}

unsafe impl RefEncode for NSCollectionViewScrollPosition {
    const ENCODING_REF: Encoding = Encoding::Pointer(&Self::ENCODING);
}

pub type NSCollectionViewSupplementaryElementKind = NSString;

extern_protocol!(
    #[cfg(feature = "NSUserInterfaceItemIdentification")]
    pub unsafe trait NSCollectionViewElement:
        NSObjectProtocol + NSUserInterfaceItemIdentification + IsMainThreadOnly
    {
        #[optional]
        #[method(prepareForReuse)]
        unsafe fn prepareForReuse(&self);

        #[cfg(feature = "NSCollectionViewLayout")]
        #[optional]
        #[method(applyLayoutAttributes:)]
        unsafe fn applyLayoutAttributes(
            &self,
            layout_attributes: &NSCollectionViewLayoutAttributes,
        );

        #[cfg(feature = "NSCollectionViewLayout")]
        #[optional]
        #[method(willTransitionFromLayout:toLayout:)]
        unsafe fn willTransitionFromLayout_toLayout(
            &self,
            old_layout: &NSCollectionViewLayout,
            new_layout: &NSCollectionViewLayout,
        );

        #[cfg(feature = "NSCollectionViewLayout")]
        #[optional]
        #[method(didTransitionFromLayout:toLayout:)]
        unsafe fn didTransitionFromLayout_toLayout(
            &self,
            old_layout: &NSCollectionViewLayout,
            new_layout: &NSCollectionViewLayout,
        );

        #[cfg(feature = "NSCollectionViewLayout")]
        #[optional]
        #[method_id(@__retain_semantics Other preferredLayoutAttributesFittingAttributes:)]
        unsafe fn preferredLayoutAttributesFittingAttributes(
            &self,
            layout_attributes: &NSCollectionViewLayoutAttributes,
        ) -> Retained<NSCollectionViewLayoutAttributes>;
    }

    #[cfg(feature = "NSUserInterfaceItemIdentification")]
    unsafe impl ProtocolType for dyn NSCollectionViewElement {}
);

extern_protocol!(
    #[cfg(feature = "NSUserInterfaceItemIdentification")]
    pub unsafe trait NSCollectionViewSectionHeaderView:
        NSCollectionViewElement + IsMainThreadOnly
    {
        #[cfg(all(
            feature = "NSButton",
            feature = "NSControl",
            feature = "NSResponder",
            feature = "NSView"
        ))]
        #[optional]
        #[method_id(@__retain_semantics Other sectionCollapseButton)]
        unsafe fn sectionCollapseButton(&self) -> Option<Retained<NSButton>>;

        #[cfg(all(
            feature = "NSButton",
            feature = "NSControl",
            feature = "NSResponder",
            feature = "NSView"
        ))]
        #[optional]
        #[method(setSectionCollapseButton:)]
        unsafe fn setSectionCollapseButton(&self, section_collapse_button: Option<&NSButton>);
    }

    #[cfg(feature = "NSUserInterfaceItemIdentification")]
    unsafe impl ProtocolType for dyn NSCollectionViewSectionHeaderView {}
);

extern_class!(
    #[derive(Debug, PartialEq, Eq, Hash)]
    #[cfg(all(feature = "NSResponder", feature = "NSViewController"))]
    pub struct NSCollectionViewItem;

    #[cfg(all(feature = "NSResponder", feature = "NSViewController"))]
    unsafe impl ClassType for NSCollectionViewItem {
        #[inherits(NSResponder, NSObject)]
        type Super = NSViewController;
        type Mutability = MainThreadOnly;
    }
);

#[cfg(all(feature = "NSResponder", feature = "NSViewController"))]
unsafe impl NSCoding for NSCollectionViewItem {}

#[cfg(all(
    feature = "NSResponder",
    feature = "NSUserInterfaceItemIdentification",
    feature = "NSViewController"
))]
unsafe impl NSCollectionViewElement for NSCollectionViewItem {}

#[cfg(all(feature = "NSResponder", feature = "NSViewController"))]
unsafe impl NSCopying for NSCollectionViewItem {}

#[cfg(all(
    feature = "NSKeyValueBinding",
    feature = "NSResponder",
    feature = "NSViewController"
))]
unsafe impl NSEditor for NSCollectionViewItem {}

#[cfg(all(feature = "NSResponder", feature = "NSViewController"))]
unsafe impl NSObjectProtocol for NSCollectionViewItem {}

#[cfg(all(
    feature = "NSResponder",
    feature = "NSStoryboardSegue",
    feature = "NSViewController"
))]
unsafe impl NSSeguePerforming for NSCollectionViewItem {}

#[cfg(all(
    feature = "NSResponder",
    feature = "NSUserInterfaceItemIdentification",
    feature = "NSViewController"
))]
unsafe impl NSUserInterfaceItemIdentification for NSCollectionViewItem {}

extern_methods!(
    #[cfg(all(feature = "NSResponder", feature = "NSViewController"))]
    unsafe impl NSCollectionViewItem {
        #[cfg(feature = "NSView")]
        #[method_id(@__retain_semantics Other collectionView)]
        pub unsafe fn collectionView(&self) -> Option<Retained<NSCollectionView>>;

        #[method(isSelected)]
        pub unsafe fn isSelected(&self) -> bool;

        #[method(setSelected:)]
        pub unsafe fn setSelected(&self, selected: bool);

        #[method(highlightState)]
        pub unsafe fn highlightState(&self) -> NSCollectionViewItemHighlightState;

        #[method(setHighlightState:)]
        pub unsafe fn setHighlightState(&self, highlight_state: NSCollectionViewItemHighlightState);

        #[cfg(all(feature = "NSControl", feature = "NSImageView", feature = "NSView"))]
        #[method_id(@__retain_semantics Other imageView)]
        pub unsafe fn imageView(&self) -> Option<Retained<NSImageView>>;

        #[cfg(all(feature = "NSControl", feature = "NSImageView", feature = "NSView"))]
        #[method(setImageView:)]
        pub unsafe fn setImageView(&self, image_view: Option<&NSImageView>);

        #[cfg(all(feature = "NSControl", feature = "NSTextField", feature = "NSView"))]
        #[method_id(@__retain_semantics Other textField)]
        pub unsafe fn textField(&self) -> Option<Retained<NSTextField>>;

        #[cfg(all(feature = "NSControl", feature = "NSTextField", feature = "NSView"))]
        #[method(setTextField:)]
        pub unsafe fn setTextField(&self, text_field: Option<&NSTextField>);

        #[cfg(feature = "NSDraggingItem")]
        #[method_id(@__retain_semantics Other draggingImageComponents)]
        pub unsafe fn draggingImageComponents(&self)
            -> Retained<NSArray<NSDraggingImageComponent>>;
    }
);

extern_methods!(
    /// Methods declared on superclass `NSViewController`
    #[cfg(all(feature = "NSResponder", feature = "NSViewController"))]
    unsafe impl NSCollectionViewItem {
        #[cfg(feature = "NSNib")]
        #[method_id(@__retain_semantics Init initWithNibName:bundle:)]
        pub unsafe fn initWithNibName_bundle(
            this: Allocated<Self>,
            nib_name_or_nil: Option<&NSNibName>,
            nib_bundle_or_nil: Option<&NSBundle>,
        ) -> Retained<Self>;

        #[method_id(@__retain_semantics Init initWithCoder:)]
        pub unsafe fn initWithCoder(
            this: Allocated<Self>,
            coder: &NSCoder,
        ) -> Option<Retained<Self>>;
    }
);

extern_methods!(
    /// Methods declared on superclass `NSResponder`
    #[cfg(all(feature = "NSResponder", feature = "NSViewController"))]
    unsafe impl NSCollectionViewItem {
        #[method_id(@__retain_semantics Init init)]
        pub unsafe fn init(this: Allocated<Self>) -> Retained<Self>;
    }
);

extern_methods!(
    /// Methods declared on superclass `NSObject`
    #[cfg(all(feature = "NSResponder", feature = "NSViewController"))]
    unsafe impl NSCollectionViewItem {
        #[method_id(@__retain_semantics New new)]
        pub unsafe fn new(mtm: MainThreadMarker) -> Retained<Self>;
    }
);

extern_class!(
    #[derive(Debug, PartialEq, Eq, Hash)]
    #[cfg(all(feature = "NSResponder", feature = "NSView"))]
    pub struct NSCollectionView;

    #[cfg(all(feature = "NSResponder", feature = "NSView"))]
    unsafe impl ClassType for NSCollectionView {
        #[inherits(NSResponder, NSObject)]
        type Super = NSView;
        type Mutability = MainThreadOnly;
    }
);

#[cfg(all(
    feature = "NSAccessibilityProtocols",
    feature = "NSResponder",
    feature = "NSView"
))]
unsafe impl NSAccessibility for NSCollectionView {}

#[cfg(all(
    feature = "NSAccessibilityProtocols",
    feature = "NSResponder",
    feature = "NSView"
))]
unsafe impl NSAccessibilityElementProtocol for NSCollectionView {}

#[cfg(all(feature = "NSAnimation", feature = "NSResponder", feature = "NSView"))]
unsafe impl NSAnimatablePropertyContainer for NSCollectionView {}

#[cfg(all(feature = "NSAppearance", feature = "NSResponder", feature = "NSView"))]
unsafe impl NSAppearanceCustomization for NSCollectionView {}

#[cfg(all(feature = "NSResponder", feature = "NSView"))]
unsafe impl NSCoding for NSCollectionView {}

#[cfg(all(feature = "NSDragging", feature = "NSResponder", feature = "NSView"))]
unsafe impl NSDraggingDestination for NSCollectionView {}

#[cfg(all(feature = "NSDragging", feature = "NSResponder", feature = "NSView"))]
unsafe impl NSDraggingSource for NSCollectionView {}

#[cfg(all(feature = "NSResponder", feature = "NSView"))]
unsafe impl NSObjectProtocol for NSCollectionView {}

#[cfg(all(
    feature = "NSResponder",
    feature = "NSUserInterfaceItemIdentification",
    feature = "NSView"
))]
unsafe impl NSUserInterfaceItemIdentification for NSCollectionView {}

extern_methods!(
    #[cfg(all(feature = "NSResponder", feature = "NSView"))]
    unsafe impl NSCollectionView {
        #[method_id(@__retain_semantics Other dataSource)]
        pub unsafe fn dataSource(
            &self,
        ) -> Option<Retained<ProtocolObject<dyn NSCollectionViewDataSource>>>;

        #[method(setDataSource:)]
        pub unsafe fn setDataSource(
            &self,
            data_source: Option<&ProtocolObject<dyn NSCollectionViewDataSource>>,
        );

        #[method_id(@__retain_semantics Other prefetchDataSource)]
        pub unsafe fn prefetchDataSource(
            &self,
        ) -> Option<Retained<ProtocolObject<dyn NSCollectionViewPrefetching>>>;

        #[method(setPrefetchDataSource:)]
        pub unsafe fn setPrefetchDataSource(
            &self,
            prefetch_data_source: Option<&ProtocolObject<dyn NSCollectionViewPrefetching>>,
        );

        #[method_id(@__retain_semantics Other content)]
        pub unsafe fn content(&self) -> Retained<NSArray<AnyObject>>;

        #[method(setContent:)]
        pub unsafe fn setContent(&self, content: &NSArray<AnyObject>);

        #[method(reloadData)]
        pub unsafe fn reloadData(&self);

        #[method_id(@__retain_semantics Other delegate)]
        pub unsafe fn delegate(
            &self,
        ) -> Option<Retained<ProtocolObject<dyn NSCollectionViewDelegate>>>;

        #[method(setDelegate:)]
        pub unsafe fn setDelegate(
            &self,
            delegate: Option<&ProtocolObject<dyn NSCollectionViewDelegate>>,
        );

        #[method_id(@__retain_semantics Other backgroundView)]
        pub unsafe fn backgroundView(&self) -> Option<Retained<NSView>>;

        #[method(setBackgroundView:)]
        pub unsafe fn setBackgroundView(&self, background_view: Option<&NSView>);

        #[method(backgroundViewScrollsWithContent)]
        pub unsafe fn backgroundViewScrollsWithContent(&self) -> bool;

        #[method(setBackgroundViewScrollsWithContent:)]
        pub unsafe fn setBackgroundViewScrollsWithContent(
            &self,
            background_view_scrolls_with_content: bool,
        );

        #[cfg(feature = "NSCollectionViewLayout")]
        #[method_id(@__retain_semantics Other collectionViewLayout)]
        pub unsafe fn collectionViewLayout(&self) -> Option<Retained<NSCollectionViewLayout>>;

        #[cfg(feature = "NSCollectionViewLayout")]
        #[method(setCollectionViewLayout:)]
        pub unsafe fn setCollectionViewLayout(
            &self,
            collection_view_layout: Option<&NSCollectionViewLayout>,
        );

        #[cfg(feature = "NSCollectionViewLayout")]
        #[method_id(@__retain_semantics Other layoutAttributesForItemAtIndexPath:)]
        pub unsafe fn layoutAttributesForItemAtIndexPath(
            &self,
            index_path: &NSIndexPath,
        ) -> Option<Retained<NSCollectionViewLayoutAttributes>>;

        #[cfg(feature = "NSCollectionViewLayout")]
        #[method_id(@__retain_semantics Other layoutAttributesForSupplementaryElementOfKind:atIndexPath:)]
        pub unsafe fn layoutAttributesForSupplementaryElementOfKind_atIndexPath(
            &self,
            kind: &NSCollectionViewSupplementaryElementKind,
            index_path: &NSIndexPath,
        ) -> Option<Retained<NSCollectionViewLayoutAttributes>>;

        #[method(frameForItemAtIndex:)]
        pub unsafe fn frameForItemAtIndex(&self, index: NSUInteger) -> NSRect;

        #[method(frameForItemAtIndex:withNumberOfItems:)]
        pub unsafe fn frameForItemAtIndex_withNumberOfItems(
            &self,
            index: NSUInteger,
            number_of_items: NSUInteger,
        ) -> NSRect;

        #[cfg(feature = "NSColor")]
        #[method_id(@__retain_semantics Other backgroundColors)]
        pub unsafe fn backgroundColors(&self) -> Retained<NSArray<NSColor>>;

        #[cfg(feature = "NSColor")]
        #[method(setBackgroundColors:)]
        pub unsafe fn setBackgroundColors(&self, background_colors: Option<&NSArray<NSColor>>);

        #[method(numberOfSections)]
        pub unsafe fn numberOfSections(&self) -> NSInteger;

        #[method(numberOfItemsInSection:)]
        pub unsafe fn numberOfItemsInSection(&self, section: NSInteger) -> NSInteger;

        #[method(isFirstResponder)]
        pub unsafe fn isFirstResponder(&self) -> bool;

        #[method(isSelectable)]
        pub unsafe fn isSelectable(&self) -> bool;

        #[method(setSelectable:)]
        pub unsafe fn setSelectable(&self, selectable: bool);

        #[method(allowsEmptySelection)]
        pub unsafe fn allowsEmptySelection(&self) -> bool;

        #[method(setAllowsEmptySelection:)]
        pub unsafe fn setAllowsEmptySelection(&self, allows_empty_selection: bool);

        #[method(allowsMultipleSelection)]
        pub unsafe fn allowsMultipleSelection(&self) -> bool;

        #[method(setAllowsMultipleSelection:)]
        pub unsafe fn setAllowsMultipleSelection(&self, allows_multiple_selection: bool);

        #[method_id(@__retain_semantics Other selectionIndexes)]
        pub unsafe fn selectionIndexes(&self) -> Retained<NSIndexSet>;

        #[method(setSelectionIndexes:)]
        pub unsafe fn setSelectionIndexes(&self, selection_indexes: &NSIndexSet);

        #[method_id(@__retain_semantics Other selectionIndexPaths)]
        pub unsafe fn selectionIndexPaths(&self) -> Retained<NSSet<NSIndexPath>>;

        #[method(setSelectionIndexPaths:)]
        pub unsafe fn setSelectionIndexPaths(&self, selection_index_paths: &NSSet<NSIndexPath>);

        #[method(selectItemsAtIndexPaths:scrollPosition:)]
        pub unsafe fn selectItemsAtIndexPaths_scrollPosition(
            &self,
            index_paths: &NSSet<NSIndexPath>,
            scroll_position: NSCollectionViewScrollPosition,
        );

        #[method(deselectItemsAtIndexPaths:)]
        pub unsafe fn deselectItemsAtIndexPaths(&self, index_paths: &NSSet<NSIndexPath>);

        #[method(selectAll:)]
        pub unsafe fn selectAll(&self, sender: Option<&AnyObject>);

        #[method(deselectAll:)]
        pub unsafe fn deselectAll(&self, sender: Option<&AnyObject>);

        #[cfg(feature = "NSUserInterfaceItemIdentification")]
        #[method(registerClass:forItemWithIdentifier:)]
        pub unsafe fn registerClass_forItemWithIdentifier(
            &self,
            item_class: Option<&AnyClass>,
            identifier: &NSUserInterfaceItemIdentifier,
        );

        #[cfg(all(feature = "NSNib", feature = "NSUserInterfaceItemIdentification"))]
        #[method(registerNib:forItemWithIdentifier:)]
        pub unsafe fn registerNib_forItemWithIdentifier(
            &self,
            nib: Option<&NSNib>,
            identifier: &NSUserInterfaceItemIdentifier,
        );

        #[cfg(feature = "NSUserInterfaceItemIdentification")]
        #[method(registerClass:forSupplementaryViewOfKind:withIdentifier:)]
        pub unsafe fn registerClass_forSupplementaryViewOfKind_withIdentifier(
            &self,
            view_class: Option<&AnyClass>,
            kind: &NSCollectionViewSupplementaryElementKind,
            identifier: &NSUserInterfaceItemIdentifier,
        );

        #[cfg(all(feature = "NSNib", feature = "NSUserInterfaceItemIdentification"))]
        #[method(registerNib:forSupplementaryViewOfKind:withIdentifier:)]
        pub unsafe fn registerNib_forSupplementaryViewOfKind_withIdentifier(
            &self,
            nib: Option<&NSNib>,
            kind: &NSCollectionViewSupplementaryElementKind,
            identifier: &NSUserInterfaceItemIdentifier,
        );

        #[cfg(all(
            feature = "NSUserInterfaceItemIdentification",
            feature = "NSViewController"
        ))]
        #[method_id(@__retain_semantics Other makeItemWithIdentifier:forIndexPath:)]
        pub unsafe fn makeItemWithIdentifier_forIndexPath(
            &self,
            identifier: &NSUserInterfaceItemIdentifier,
            index_path: &NSIndexPath,
        ) -> Retained<NSCollectionViewItem>;

        #[cfg(feature = "NSUserInterfaceItemIdentification")]
        #[method_id(@__retain_semantics Other makeSupplementaryViewOfKind:withIdentifier:forIndexPath:)]
        pub unsafe fn makeSupplementaryViewOfKind_withIdentifier_forIndexPath(
            &self,
            element_kind: &NSCollectionViewSupplementaryElementKind,
            identifier: &NSUserInterfaceItemIdentifier,
            index_path: &NSIndexPath,
        ) -> Retained<NSView>;

        #[cfg(feature = "NSViewController")]
        #[method_id(@__retain_semantics Other itemAtIndex:)]
        pub unsafe fn itemAtIndex(
            &self,
            index: NSUInteger,
        ) -> Option<Retained<NSCollectionViewItem>>;

        #[cfg(feature = "NSViewController")]
        #[method_id(@__retain_semantics Other itemAtIndexPath:)]
        pub unsafe fn itemAtIndexPath(
            &self,
            index_path: &NSIndexPath,
        ) -> Option<Retained<NSCollectionViewItem>>;

        #[cfg(feature = "NSViewController")]
        #[method_id(@__retain_semantics Other visibleItems)]
        pub unsafe fn visibleItems(&self) -> Retained<NSArray<NSCollectionViewItem>>;

        #[method_id(@__retain_semantics Other indexPathsForVisibleItems)]
        pub unsafe fn indexPathsForVisibleItems(&self) -> Retained<NSSet<NSIndexPath>>;

        #[cfg(feature = "NSViewController")]
        #[method_id(@__retain_semantics Other indexPathForItem:)]
        pub unsafe fn indexPathForItem(
            &self,
            item: &NSCollectionViewItem,
        ) -> Option<Retained<NSIndexPath>>;

        #[method_id(@__retain_semantics Other indexPathForItemAtPoint:)]
        pub unsafe fn indexPathForItemAtPoint(
            &self,
            point: NSPoint,
        ) -> Option<Retained<NSIndexPath>>;

        #[cfg(feature = "NSUserInterfaceItemIdentification")]
        #[method_id(@__retain_semantics Other supplementaryViewForElementKind:atIndexPath:)]
        pub unsafe fn supplementaryViewForElementKind_atIndexPath(
            &self,
            element_kind: &NSCollectionViewSupplementaryElementKind,
            index_path: &NSIndexPath,
        ) -> Option<Retained<NSView>>;

        #[cfg(feature = "NSUserInterfaceItemIdentification")]
        #[method_id(@__retain_semantics Other visibleSupplementaryViewsOfKind:)]
        pub unsafe fn visibleSupplementaryViewsOfKind(
            &self,
            element_kind: &NSCollectionViewSupplementaryElementKind,
        ) -> Retained<NSArray<NSView>>;

        #[method_id(@__retain_semantics Other indexPathsForVisibleSupplementaryElementsOfKind:)]
        pub unsafe fn indexPathsForVisibleSupplementaryElementsOfKind(
            &self,
            element_kind: &NSCollectionViewSupplementaryElementKind,
        ) -> Retained<NSSet<NSIndexPath>>;

        #[method(insertSections:)]
        pub unsafe fn insertSections(&self, sections: &NSIndexSet);

        #[method(deleteSections:)]
        pub unsafe fn deleteSections(&self, sections: &NSIndexSet);

        #[method(reloadSections:)]
        pub unsafe fn reloadSections(&self, sections: &NSIndexSet);

        #[method(moveSection:toSection:)]
        pub unsafe fn moveSection_toSection(&self, section: NSInteger, new_section: NSInteger);

        #[method(insertItemsAtIndexPaths:)]
        pub unsafe fn insertItemsAtIndexPaths(&self, index_paths: &NSSet<NSIndexPath>);

        #[method(deleteItemsAtIndexPaths:)]
        pub unsafe fn deleteItemsAtIndexPaths(&self, index_paths: &NSSet<NSIndexPath>);

        #[method(reloadItemsAtIndexPaths:)]
        pub unsafe fn reloadItemsAtIndexPaths(&self, index_paths: &NSSet<NSIndexPath>);

        #[method(moveItemAtIndexPath:toIndexPath:)]
        pub unsafe fn moveItemAtIndexPath_toIndexPath(
            &self,
            index_path: &NSIndexPath,
            new_index_path: &NSIndexPath,
        );

        #[cfg(feature = "block2")]
        #[method(performBatchUpdates:completionHandler:)]
        pub unsafe fn performBatchUpdates_completionHandler(
            &self,
            updates: Option<&block2::Block<dyn Fn() + '_>>,
            completion_handler: Option<&block2::Block<dyn Fn(Bool)>>,
        );

        #[method(toggleSectionCollapse:)]
        pub unsafe fn toggleSectionCollapse(&self, sender: &AnyObject);

        #[method(scrollToItemsAtIndexPaths:scrollPosition:)]
        pub unsafe fn scrollToItemsAtIndexPaths_scrollPosition(
            &self,
            index_paths: &NSSet<NSIndexPath>,
            scroll_position: NSCollectionViewScrollPosition,
        );

        #[cfg(feature = "NSDragging")]
        #[method(setDraggingSourceOperationMask:forLocal:)]
        pub unsafe fn setDraggingSourceOperationMask_forLocal(
            &self,
            drag_operation_mask: NSDragOperation,
            local_destination: bool,
        );

        #[cfg(all(feature = "NSEvent", feature = "NSImage"))]
        #[method_id(@__retain_semantics Other draggingImageForItemsAtIndexPaths:withEvent:offset:)]
        pub unsafe fn draggingImageForItemsAtIndexPaths_withEvent_offset(
            &self,
            index_paths: &NSSet<NSIndexPath>,
            event: &NSEvent,
            drag_image_offset: NSPointPointer,
        ) -> Retained<NSImage>;

        #[cfg(all(feature = "NSEvent", feature = "NSImage"))]
        #[method_id(@__retain_semantics Other draggingImageForItemsAtIndexes:withEvent:offset:)]
        pub unsafe fn draggingImageForItemsAtIndexes_withEvent_offset(
            &self,
            indexes: &NSIndexSet,
            event: &NSEvent,
            drag_image_offset: NSPointPointer,
        ) -> Retained<NSImage>;
    }
);

extern_methods!(
    /// Methods declared on superclass `NSView`
    #[cfg(all(feature = "NSResponder", feature = "NSView"))]
    unsafe impl NSCollectionView {
        #[method_id(@__retain_semantics Init initWithFrame:)]
        pub unsafe fn initWithFrame(this: Allocated<Self>, frame_rect: NSRect) -> Retained<Self>;

        #[method_id(@__retain_semantics Init initWithCoder:)]
        pub unsafe fn initWithCoder(
            this: Allocated<Self>,
            coder: &NSCoder,
        ) -> Option<Retained<Self>>;
    }
);

extern_methods!(
    /// Methods declared on superclass `NSResponder`
    #[cfg(all(feature = "NSResponder", feature = "NSView"))]
    unsafe impl NSCollectionView {
        #[method_id(@__retain_semantics Init init)]
        pub unsafe fn init(this: Allocated<Self>) -> Retained<Self>;
    }
);

extern_methods!(
    /// Methods declared on superclass `NSObject`
    #[cfg(all(feature = "NSResponder", feature = "NSView"))]
    unsafe impl NSCollectionView {
        #[method_id(@__retain_semantics New new)]
        pub unsafe fn new(mtm: MainThreadMarker) -> Retained<Self>;
    }
);

extern_protocol!(
    pub unsafe trait NSCollectionViewDataSource:
        NSObjectProtocol + IsMainThreadOnly
    {
        #[cfg(all(feature = "NSResponder", feature = "NSView"))]
        #[method(collectionView:numberOfItemsInSection:)]
        unsafe fn collectionView_numberOfItemsInSection(
            &self,
            collection_view: &NSCollectionView,
            section: NSInteger,
        ) -> NSInteger;

        #[cfg(all(
            feature = "NSResponder",
            feature = "NSView",
            feature = "NSViewController"
        ))]
        #[method_id(@__retain_semantics Other collectionView:itemForRepresentedObjectAtIndexPath:)]
        unsafe fn collectionView_itemForRepresentedObjectAtIndexPath(
            &self,
            collection_view: &NSCollectionView,
            index_path: &NSIndexPath,
        ) -> Retained<NSCollectionViewItem>;

        #[cfg(all(feature = "NSResponder", feature = "NSView"))]
        #[optional]
        #[method(numberOfSectionsInCollectionView:)]
        unsafe fn numberOfSectionsInCollectionView(
            &self,
            collection_view: &NSCollectionView,
        ) -> NSInteger;

        #[cfg(all(feature = "NSResponder", feature = "NSView"))]
        #[optional]
        #[method_id(@__retain_semantics Other collectionView:viewForSupplementaryElementOfKind:atIndexPath:)]
        unsafe fn collectionView_viewForSupplementaryElementOfKind_atIndexPath(
            &self,
            collection_view: &NSCollectionView,
            kind: &NSCollectionViewSupplementaryElementKind,
            index_path: &NSIndexPath,
        ) -> Retained<NSView>;
    }

    unsafe impl ProtocolType for dyn NSCollectionViewDataSource {}
);

extern_protocol!(
    pub unsafe trait NSCollectionViewPrefetching:
        NSObjectProtocol + IsMainThreadOnly
    {
        #[cfg(all(feature = "NSResponder", feature = "NSView"))]
        #[method(collectionView:prefetchItemsAtIndexPaths:)]
        unsafe fn collectionView_prefetchItemsAtIndexPaths(
            &self,
            collection_view: &NSCollectionView,
            index_paths: &NSArray<NSIndexPath>,
        );

        #[cfg(all(feature = "NSResponder", feature = "NSView"))]
        #[optional]
        #[method(collectionView:cancelPrefetchingForItemsAtIndexPaths:)]
        unsafe fn collectionView_cancelPrefetchingForItemsAtIndexPaths(
            &self,
            collection_view: &NSCollectionView,
            index_paths: &NSArray<NSIndexPath>,
        );
    }

    unsafe impl ProtocolType for dyn NSCollectionViewPrefetching {}
);

extern_protocol!(
    pub unsafe trait NSCollectionViewDelegate: NSObjectProtocol {
        #[cfg(all(feature = "NSEvent", feature = "NSResponder", feature = "NSView"))]
        #[optional]
        #[method(collectionView:canDragItemsAtIndexPaths:withEvent:)]
        unsafe fn collectionView_canDragItemsAtIndexPaths_withEvent(
            &self,
            collection_view: &NSCollectionView,
            index_paths: &NSSet<NSIndexPath>,
            event: &NSEvent,
        ) -> bool;

        #[cfg(all(feature = "NSEvent", feature = "NSResponder", feature = "NSView"))]
        #[optional]
        #[method(collectionView:canDragItemsAtIndexes:withEvent:)]
        unsafe fn collectionView_canDragItemsAtIndexes_withEvent(
            &self,
            collection_view: &NSCollectionView,
            indexes: &NSIndexSet,
            event: &NSEvent,
        ) -> bool;

        #[cfg(all(feature = "NSPasteboard", feature = "NSResponder", feature = "NSView"))]
        #[deprecated = "Use -collectionView:pasteboardWriterForItemAtIndexPath: instead"]
        #[optional]
        #[method(collectionView:writeItemsAtIndexPaths:toPasteboard:)]
        unsafe fn collectionView_writeItemsAtIndexPaths_toPasteboard(
            &self,
            collection_view: &NSCollectionView,
            index_paths: &NSSet<NSIndexPath>,
            pasteboard: &NSPasteboard,
        ) -> bool;

        #[cfg(all(feature = "NSPasteboard", feature = "NSResponder", feature = "NSView"))]
        #[deprecated = "Use -collectionView:pasteboardWriterForItemAtIndexPath: instead"]
        #[optional]
        #[method(collectionView:writeItemsAtIndexes:toPasteboard:)]
        unsafe fn collectionView_writeItemsAtIndexes_toPasteboard(
            &self,
            collection_view: &NSCollectionView,
            indexes: &NSIndexSet,
            pasteboard: &NSPasteboard,
        ) -> bool;

        #[cfg(all(feature = "NSResponder", feature = "NSView"))]
        #[deprecated = "Use NSFilePromiseReceiver objects instead"]
        #[optional]
        #[method_id(@__retain_semantics Other collectionView:namesOfPromisedFilesDroppedAtDestination:forDraggedItemsAtIndexPaths:)]
        unsafe fn collectionView_namesOfPromisedFilesDroppedAtDestination_forDraggedItemsAtIndexPaths(
            &self,
            collection_view: &NSCollectionView,
            drop_url: &NSURL,
            index_paths: &NSSet<NSIndexPath>,
        ) -> Retained<NSArray<NSString>>;

        #[cfg(all(feature = "NSResponder", feature = "NSView"))]
        #[deprecated = "Use NSFilePromiseReceiver objects instead"]
        #[optional]
        #[method_id(@__retain_semantics Other collectionView:namesOfPromisedFilesDroppedAtDestination:forDraggedItemsAtIndexes:)]
        unsafe fn collectionView_namesOfPromisedFilesDroppedAtDestination_forDraggedItemsAtIndexes(
            &self,
            collection_view: &NSCollectionView,
            drop_url: &NSURL,
            indexes: &NSIndexSet,
        ) -> Retained<NSArray<NSString>>;

        #[cfg(all(
            feature = "NSEvent",
            feature = "NSImage",
            feature = "NSResponder",
            feature = "NSView"
        ))]
        #[optional]
        #[method_id(@__retain_semantics Other collectionView:draggingImageForItemsAtIndexPaths:withEvent:offset:)]
        unsafe fn collectionView_draggingImageForItemsAtIndexPaths_withEvent_offset(
            &self,
            collection_view: &NSCollectionView,
            index_paths: &NSSet<NSIndexPath>,
            event: &NSEvent,
            drag_image_offset: NSPointPointer,
        ) -> Retained<NSImage>;

        #[cfg(all(
            feature = "NSEvent",
            feature = "NSImage",
            feature = "NSResponder",
            feature = "NSView"
        ))]
        #[optional]
        #[method_id(@__retain_semantics Other collectionView:draggingImageForItemsAtIndexes:withEvent:offset:)]
        unsafe fn collectionView_draggingImageForItemsAtIndexes_withEvent_offset(
            &self,
            collection_view: &NSCollectionView,
            indexes: &NSIndexSet,
            event: &NSEvent,
            drag_image_offset: NSPointPointer,
        ) -> Retained<NSImage>;

        #[cfg(all(feature = "NSDragging", feature = "NSResponder", feature = "NSView"))]
        #[optional]
        #[method(collectionView:validateDrop:proposedIndexPath:dropOperation:)]
        unsafe fn collectionView_validateDrop_proposedIndexPath_dropOperation(
            &self,
            collection_view: &NSCollectionView,
            dragging_info: &ProtocolObject<dyn NSDraggingInfo>,
            proposed_drop_index_path: &mut Retained<NSIndexPath>,
            proposed_drop_operation: NonNull<NSCollectionViewDropOperation>,
        ) -> NSDragOperation;

        #[cfg(all(feature = "NSDragging", feature = "NSResponder", feature = "NSView"))]
        #[optional]
        #[method(collectionView:validateDrop:proposedIndex:dropOperation:)]
        unsafe fn collectionView_validateDrop_proposedIndex_dropOperation(
            &self,
            collection_view: &NSCollectionView,
            dragging_info: &ProtocolObject<dyn NSDraggingInfo>,
            proposed_drop_index: NonNull<NSInteger>,
            proposed_drop_operation: NonNull<NSCollectionViewDropOperation>,
        ) -> NSDragOperation;

        #[cfg(all(feature = "NSDragging", feature = "NSResponder", feature = "NSView"))]
        #[optional]
        #[method(collectionView:acceptDrop:indexPath:dropOperation:)]
        unsafe fn collectionView_acceptDrop_indexPath_dropOperation(
            &self,
            collection_view: &NSCollectionView,
            dragging_info: &ProtocolObject<dyn NSDraggingInfo>,
            index_path: &NSIndexPath,
            drop_operation: NSCollectionViewDropOperation,
        ) -> bool;

        #[cfg(all(feature = "NSDragging", feature = "NSResponder", feature = "NSView"))]
        #[optional]
        #[method(collectionView:acceptDrop:index:dropOperation:)]
        unsafe fn collectionView_acceptDrop_index_dropOperation(
            &self,
            collection_view: &NSCollectionView,
            dragging_info: &ProtocolObject<dyn NSDraggingInfo>,
            index: NSInteger,
            drop_operation: NSCollectionViewDropOperation,
        ) -> bool;

        #[cfg(all(feature = "NSPasteboard", feature = "NSResponder", feature = "NSView"))]
        #[optional]
        #[method_id(@__retain_semantics Other collectionView:pasteboardWriterForItemAtIndexPath:)]
        unsafe fn collectionView_pasteboardWriterForItemAtIndexPath(
            &self,
            collection_view: &NSCollectionView,
            index_path: &NSIndexPath,
        ) -> Option<Retained<ProtocolObject<dyn NSPasteboardWriting>>>;

        #[cfg(all(feature = "NSPasteboard", feature = "NSResponder", feature = "NSView"))]
        #[optional]
        #[method_id(@__retain_semantics Other collectionView:pasteboardWriterForItemAtIndex:)]
        unsafe fn collectionView_pasteboardWriterForItemAtIndex(
            &self,
            collection_view: &NSCollectionView,
            index: NSUInteger,
        ) -> Option<Retained<ProtocolObject<dyn NSPasteboardWriting>>>;

        #[cfg(all(
            feature = "NSDraggingSession",
            feature = "NSResponder",
            feature = "NSView"
        ))]
        #[optional]
        #[method(collectionView:draggingSession:willBeginAtPoint:forItemsAtIndexPaths:)]
        unsafe fn collectionView_draggingSession_willBeginAtPoint_forItemsAtIndexPaths(
            &self,
            collection_view: &NSCollectionView,
            session: &NSDraggingSession,
            screen_point: NSPoint,
            index_paths: &NSSet<NSIndexPath>,
        );

        #[cfg(all(
            feature = "NSDraggingSession",
            feature = "NSResponder",
            feature = "NSView"
        ))]
        #[optional]
        #[method(collectionView:draggingSession:willBeginAtPoint:forItemsAtIndexes:)]
        unsafe fn collectionView_draggingSession_willBeginAtPoint_forItemsAtIndexes(
            &self,
            collection_view: &NSCollectionView,
            session: &NSDraggingSession,
            screen_point: NSPoint,
            indexes: &NSIndexSet,
        );

        #[cfg(all(
            feature = "NSDragging",
            feature = "NSDraggingSession",
            feature = "NSResponder",
            feature = "NSView"
        ))]
        #[optional]
        #[method(collectionView:draggingSession:endedAtPoint:dragOperation:)]
        unsafe fn collectionView_draggingSession_endedAtPoint_dragOperation(
            &self,
            collection_view: &NSCollectionView,
            session: &NSDraggingSession,
            screen_point: NSPoint,
            operation: NSDragOperation,
        );

        #[cfg(all(feature = "NSDragging", feature = "NSResponder", feature = "NSView"))]
        #[optional]
        #[method(collectionView:updateDraggingItemsForDrag:)]
        unsafe fn collectionView_updateDraggingItemsForDrag(
            &self,
            collection_view: &NSCollectionView,
            dragging_info: &ProtocolObject<dyn NSDraggingInfo>,
        );

        #[cfg(all(feature = "NSResponder", feature = "NSView"))]
        #[optional]
        #[method_id(@__retain_semantics Other collectionView:shouldChangeItemsAtIndexPaths:toHighlightState:)]
        unsafe fn collectionView_shouldChangeItemsAtIndexPaths_toHighlightState(
            &self,
            collection_view: &NSCollectionView,
            index_paths: &NSSet<NSIndexPath>,
            highlight_state: NSCollectionViewItemHighlightState,
        ) -> Retained<NSSet<NSIndexPath>>;

        #[cfg(all(feature = "NSResponder", feature = "NSView"))]
        #[optional]
        #[method(collectionView:didChangeItemsAtIndexPaths:toHighlightState:)]
        unsafe fn collectionView_didChangeItemsAtIndexPaths_toHighlightState(
            &self,
            collection_view: &NSCollectionView,
            index_paths: &NSSet<NSIndexPath>,
            highlight_state: NSCollectionViewItemHighlightState,
        );

        #[cfg(all(feature = "NSResponder", feature = "NSView"))]
        #[optional]
        #[method_id(@__retain_semantics Other collectionView:shouldSelectItemsAtIndexPaths:)]
        unsafe fn collectionView_shouldSelectItemsAtIndexPaths(
            &self,
            collection_view: &NSCollectionView,
            index_paths: &NSSet<NSIndexPath>,
        ) -> Retained<NSSet<NSIndexPath>>;

        #[cfg(all(feature = "NSResponder", feature = "NSView"))]
        #[optional]
        #[method_id(@__retain_semantics Other collectionView:shouldDeselectItemsAtIndexPaths:)]
        unsafe fn collectionView_shouldDeselectItemsAtIndexPaths(
            &self,
            collection_view: &NSCollectionView,
            index_paths: &NSSet<NSIndexPath>,
        ) -> Retained<NSSet<NSIndexPath>>;

        #[cfg(all(feature = "NSResponder", feature = "NSView"))]
        #[optional]
        #[method(collectionView:didSelectItemsAtIndexPaths:)]
        unsafe fn collectionView_didSelectItemsAtIndexPaths(
            &self,
            collection_view: &NSCollectionView,
            index_paths: &NSSet<NSIndexPath>,
        );

        #[cfg(all(feature = "NSResponder", feature = "NSView"))]
        #[optional]
        #[method(collectionView:didDeselectItemsAtIndexPaths:)]
        unsafe fn collectionView_didDeselectItemsAtIndexPaths(
            &self,
            collection_view: &NSCollectionView,
            index_paths: &NSSet<NSIndexPath>,
        );

        #[cfg(all(
            feature = "NSResponder",
            feature = "NSView",
            feature = "NSViewController"
        ))]
        #[optional]
        #[method(collectionView:willDisplayItem:forRepresentedObjectAtIndexPath:)]
        unsafe fn collectionView_willDisplayItem_forRepresentedObjectAtIndexPath(
            &self,
            collection_view: &NSCollectionView,
            item: &NSCollectionViewItem,
            index_path: &NSIndexPath,
        );

        #[cfg(all(feature = "NSResponder", feature = "NSView"))]
        #[optional]
        #[method(collectionView:willDisplaySupplementaryView:forElementKind:atIndexPath:)]
        unsafe fn collectionView_willDisplaySupplementaryView_forElementKind_atIndexPath(
            &self,
            collection_view: &NSCollectionView,
            view: &NSView,
            element_kind: &NSCollectionViewSupplementaryElementKind,
            index_path: &NSIndexPath,
        );

        #[cfg(all(
            feature = "NSResponder",
            feature = "NSView",
            feature = "NSViewController"
        ))]
        #[optional]
        #[method(collectionView:didEndDisplayingItem:forRepresentedObjectAtIndexPath:)]
        unsafe fn collectionView_didEndDisplayingItem_forRepresentedObjectAtIndexPath(
            &self,
            collection_view: &NSCollectionView,
            item: &NSCollectionViewItem,
            index_path: &NSIndexPath,
        );

        #[cfg(all(feature = "NSResponder", feature = "NSView"))]
        #[optional]
        #[method(collectionView:didEndDisplayingSupplementaryView:forElementOfKind:atIndexPath:)]
        unsafe fn collectionView_didEndDisplayingSupplementaryView_forElementOfKind_atIndexPath(
            &self,
            collection_view: &NSCollectionView,
            view: &NSView,
            element_kind: &NSCollectionViewSupplementaryElementKind,
            index_path: &NSIndexPath,
        );

        #[cfg(all(
            feature = "NSCollectionViewLayout",
            feature = "NSCollectionViewTransitionLayout",
            feature = "NSResponder",
            feature = "NSView"
        ))]
        #[optional]
        #[method_id(@__retain_semantics Other collectionView:transitionLayoutForOldLayout:newLayout:)]
        unsafe fn collectionView_transitionLayoutForOldLayout_newLayout(
            &self,
            collection_view: &NSCollectionView,
            from_layout: &NSCollectionViewLayout,
            to_layout: &NSCollectionViewLayout,
        ) -> Retained<NSCollectionViewTransitionLayout>;
    }

    unsafe impl ProtocolType for dyn NSCollectionViewDelegate {}
);

extern_category!(
    /// Category "NSCollectionViewAdditions" on [`NSIndexPath`].
    #[doc(alias = "NSCollectionViewAdditions")]
    pub unsafe trait NSIndexPathNSCollectionViewAdditions {
        #[method_id(@__retain_semantics Other indexPathForItem:inSection:)]
        unsafe fn indexPathForItem_inSection(
            item: NSInteger,
            section: NSInteger,
        ) -> Retained<NSIndexPath>;

        #[method(item)]
        unsafe fn item(&self) -> NSInteger;

        #[method(section)]
        unsafe fn section(&self) -> NSInteger;
    }

    unsafe impl NSIndexPathNSCollectionViewAdditions for NSIndexPath {}
);

extern_category!(
    /// Category "NSCollectionViewAdditions" on [`NSSet`].
    #[doc(alias = "NSCollectionViewAdditions")]
    pub unsafe trait NSSetNSCollectionViewAdditions {
        #[method_id(@__retain_semantics Other setWithCollectionViewIndexPath:)]
        unsafe fn setWithCollectionViewIndexPath(index_path: &NSIndexPath) -> Retained<Self>;

        #[method_id(@__retain_semantics Other setWithCollectionViewIndexPaths:)]
        unsafe fn setWithCollectionViewIndexPaths(
            index_paths: &NSArray<NSIndexPath>,
        ) -> Retained<Self>;

        #[cfg(feature = "block2")]
        #[method(enumerateIndexPathsWithOptions:usingBlock:)]
        unsafe fn enumerateIndexPathsWithOptions_usingBlock(
            &self,
            opts: NSEnumerationOptions,
            block: &block2::Block<dyn Fn(NonNull<NSIndexPath>, NonNull<Bool>) + '_>,
        );
    }

    unsafe impl NSSetNSCollectionViewAdditions for NSSet {}
);

extern_methods!(
    /// NSDeprecated
    #[cfg(all(feature = "NSResponder", feature = "NSView"))]
    unsafe impl NSCollectionView {
        #[cfg(feature = "NSViewController")]
        #[deprecated = "Use -[NSCollectionViewDataSource collectionView:itemForRepresentedObjectAtIndexPath:] instead"]
        #[method_id(@__retain_semantics New newItemForRepresentedObject:)]
        pub unsafe fn newItemForRepresentedObject(
            &self,
            object: &AnyObject,
        ) -> Retained<NSCollectionViewItem>;

        #[cfg(feature = "NSViewController")]
        #[deprecated = "Use -registerNib:forItemWithIdentifier: or -registerClass:forItemWithIdentifier: instead."]
        #[method_id(@__retain_semantics Other itemPrototype)]
        pub unsafe fn itemPrototype(&self) -> Option<Retained<NSCollectionViewItem>>;

        #[cfg(feature = "NSViewController")]
        #[deprecated = "Use -registerNib:forItemWithIdentifier: or -registerClass:forItemWithIdentifier: instead."]
        #[method(setItemPrototype:)]
        pub unsafe fn setItemPrototype(&self, item_prototype: Option<&NSCollectionViewItem>);

        #[deprecated = "Use NSCollectionViewGridLayout as the receiver's collectionViewLayout, setting its maximumNumberOfRows instead"]
        #[method(maxNumberOfRows)]
        pub unsafe fn maxNumberOfRows(&self) -> NSUInteger;

        #[deprecated = "Use NSCollectionViewGridLayout as the receiver's collectionViewLayout, setting its maximumNumberOfRows instead"]
        #[method(setMaxNumberOfRows:)]
        pub unsafe fn setMaxNumberOfRows(&self, max_number_of_rows: NSUInteger);

        #[deprecated = "Use NSCollectionViewGridLayout as the receiver's collectionViewLayout, setting its maximumNumberOfColumns instead"]
        #[method(maxNumberOfColumns)]
        pub unsafe fn maxNumberOfColumns(&self) -> NSUInteger;

        #[deprecated = "Use NSCollectionViewGridLayout as the receiver's collectionViewLayout, setting its maximumNumberOfColumns instead"]
        #[method(setMaxNumberOfColumns:)]
        pub unsafe fn setMaxNumberOfColumns(&self, max_number_of_columns: NSUInteger);

        #[deprecated = "Use NSCollectionViewGridLayout as the receiver's collectionViewLayout, setting its minimumItemSize instead"]
        #[method(minItemSize)]
        pub unsafe fn minItemSize(&self) -> NSSize;

        #[deprecated = "Use NSCollectionViewGridLayout as the receiver's collectionViewLayout, setting its minimumItemSize instead"]
        #[method(setMinItemSize:)]
        pub unsafe fn setMinItemSize(&self, min_item_size: NSSize);

        #[deprecated = "Use NSCollectionViewGridLayout as the receiver's collectionViewLayout, setting its maximumItemSize instead"]
        #[method(maxItemSize)]
        pub unsafe fn maxItemSize(&self) -> NSSize;

        #[deprecated = "Use NSCollectionViewGridLayout as the receiver's collectionViewLayout, setting its maximumItemSize instead"]
        #[method(setMaxItemSize:)]
        pub unsafe fn setMaxItemSize(&self, max_item_size: NSSize);
    }
);