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IGListBindingSectionController Class Reference
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< h1 > IGListBindingSectionController< / h1 >
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< div class = "declaration" >
< div class = "language" >
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< pre class = "highlight objective_c" > < code >
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< span class = "k" > @interface< / span > < span class = "nc" > IGListBindingSectionController< / span > < span class = "o" > < < / span >
< span class = "n" > __covariant< / span > < span class = "n" > ObjectType< / span > < span class = "o" > :< / span > < span class = "n" > id< / span > < span class = "o" > < < / span > < span class = "n" > < a href = "../Protocols/IGListDiffable.html" > IGListDiffable< / a > < / span > < span class = "o" > > > < / span > < span class = "o" > :< / span > < span class = "n" > < a href = "../Classes/IGListSectionController.html" > IGListSectionController< / a > < / span > < / code > < / pre >
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< / div >
< / div >
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< p > This section controller uses a data source to transform its < q > top level< / q > object into an array of diffable view models.
It then automatically binds each view model to cells via the < code > < a href = "../Protocols/IGListBindable.html" > IGListBindable< / a > < / code > protocol.< / p >
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< p > Models used with < code > IGListBindingSectionController< / code > should take special care to always return < code > YES< / code > for identical
objects. That is, any objects with matching < code > -diffIdentifier< / code > s should always be equal, that way the section controller
can create new view models via the data source, create a diff, and update the specific cells that have changed.< / p >
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< p > In Objective-C, your < code > -isEqualToDiffableObject:< / code > can simply be:< / p >
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< pre class = "highlight objective_c" > < code > < span class = "k" > -< / span > < span class = "p" > (< / span > < span class = "n" > BOOL< / span > < span class = "p" > )< / span > < span class = "nf" > isEqualToDiffableObject< / span > < span class = "p" > :(< / span > < span class = "n" > id< / span > < span class = "p" > )< / span > < span class = "nv" > object< / span > < span class = "p" > {< / span >
< span class = "k" > return< / span > < span class = "nb" > YES< / span > < span class = "p" > ;< / span >
< span class = "p" > }< / span >
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< / code > < / pre >
< p > In Swift:< / p >
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< pre class = "highlight objective_c" > < code > < span class = "n" > func< / span > < span class = "n" > isEqual< / span > < span class = "p" > (< / span > < span class = "n" > toDiffableObject< / span > < span class = "n" > object< / span > < span class = "o" > :< / span > < span class = "n" > IGListDiffable< / span > < span class = "p" > ?)< / span > < span class = "o" > -> < / span > < span class = "n" > Bool< / span > < span class = "err" > {< / span >
< span class = "k" > return< / span > < span class = "nb" > true< / span >
< span class = "err" > }< / span >
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< / code > < / pre >
< p > Only when < code > -diffIdentifier< / code > s match is object equality compared, so you can assume the class is the same, and the
instance has already been checked.< / p >
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< / section >
< section class = "section task-group-section" >
< div class = "task-group" >
< ul >
< li class = "item" >
< div >
< code >
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< a name = "/c:objc(cs)IGListBindingSectionController(py)dataSource" > < / a >
< a name = "//apple_ref/objc/Property/dataSource" class = "dashAnchor" > < / a >
< a class = "token" href = "#/c:objc(cs)IGListBindingSectionController(py)dataSource" > dataSource< / a >
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< / code >
< / div >
< div class = "height-container" >
< div class = "pointer-container" > < / div >
< section class = "section" >
< div class = "pointer" > < / div >
< div class = "abstract" >
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< p > A data source that transforms a top-level object into view models, and returns cells and sizes for given view models.< / p >
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< / div >
< div class = "declaration" >
< h4 > Declaration< / h4 >
< div class = "language" >
< p class = "aside-title" > Objective-C< / p >
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< pre class = "highlight objective_c" > < code > < span class = "k" > @property< / span > < span class = "p" > (< / span > < span class = "n" > readwrite< / span > < span class = "p" > ,< / span > < span class = "n" > nonatomic< / span > < span class = "p" > ,< / span > < span class = "n" > nullable< / span > < span class = "p" > )< / span >
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< span class = "n" > id< / span > < span class = "o" > < < / span > < span class = "n" > < a href = "../Protocols/IGListBindingSectionControllerDataSource.html" > IGListBindingSectionControllerDataSource< / a > < / span > < span class = "o" > > < / span >
< span class = "n" > dataSource< / span > < span class = "p" > ;< / span > < / code > < / pre >
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< / div >
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< div class = "language" >
< p class = "aside-title" > Swift< / p >
< pre class = "highlight swift" > < code > < span class = "k" > weak< / span > < span class = "k" > var< / span > < span class = "nv" > dataSource< / span > < span class = "p" > :< / span > < span class = "kt" > ListBindingSectionControllerDataSource< / span > < span class = "p" > ?< / span > < span class = "p" > {< / span > < span class = "k" > get< / span > < span class = "k" > set< / span > < span class = "p" > }< / span > < / code > < / pre >
< / div >
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< / div >
< / section >
< / div >
< / li >
< li class = "item" >
< div >
< code >
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< a name = "/c:objc(cs)IGListBindingSectionController(py)selectionDelegate" > < / a >
< a name = "//apple_ref/objc/Property/selectionDelegate" class = "dashAnchor" > < / a >
< a class = "token" href = "#/c:objc(cs)IGListBindingSectionController(py)selectionDelegate" > selectionDelegate< / a >
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< / code >
< / div >
< div class = "height-container" >
< div class = "pointer-container" > < / div >
< section class = "section" >
< div class = "pointer" > < / div >
< div class = "abstract" >
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< p > A delegate that receives selection events from cells in an < code > IGListBindingSectionController< / code > instance.< / p >
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< / div >
< div class = "declaration" >
< h4 > Declaration< / h4 >
< div class = "language" >
< p class = "aside-title" > Objective-C< / p >
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< pre class = "highlight objective_c" > < code > < span class = "k" > @property< / span > < span class = "p" > (< / span > < span class = "n" > readwrite< / span > < span class = "p" > ,< / span > < span class = "n" > nonatomic< / span > < span class = "p" > ,< / span > < span class = "n" > nullable< / span > < span class = "p" > )< / span >
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< span class = "n" > id< / span > < span class = "o" > < < / span > < span class = "n" > < a href = "../Protocols/IGListBindingSectionControllerSelectionDelegate.html" > IGListBindingSectionControllerSelectionDelegate< / a > < / span > < span class = "o" > > < / span >
< span class = "n" > selectionDelegate< / span > < span class = "p" > ;< / span > < / code > < / pre >
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< / div >
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< div class = "language" >
< p class = "aside-title" > Swift< / p >
< pre class = "highlight swift" > < code > < span class = "k" > weak< / span > < span class = "k" > var< / span > < span class = "nv" > selectionDelegate< / span > < span class = "p" > :< / span > < span class = "kt" > ListBindingSectionControllerSelectionDelegate< / span > < span class = "p" > ?< / span > < span class = "p" > {< / span > < span class = "k" > get< / span > < span class = "k" > set< / span > < span class = "p" > }< / span > < / code > < / pre >
< / div >
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< / div >
< / section >
< / div >
< / li >
< li class = "item" >
< div >
< code >
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< a name = "/c:objc(cs)IGListBindingSectionController(py)object" > < / a >
< a name = "//apple_ref/objc/Property/object" class = "dashAnchor" > < / a >
< a class = "token" href = "#/c:objc(cs)IGListBindingSectionController(py)object" > object< / a >
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< / code >
< / div >
< div class = "height-container" >
< div class = "pointer-container" > < / div >
< section class = "section" >
< div class = "pointer" > < / div >
< div class = "abstract" >
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< p > The object currently assigned to the section controller, if any.< / p >
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< / div >
< div class = "declaration" >
< h4 > Declaration< / h4 >
< div class = "language" >
< p class = "aside-title" > Objective-C< / p >
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< pre class = "highlight objective_c" > < code > < span class = "k" > @property< / span > < span class = "p" > (< / span > < span class = "n" > readonly< / span > < span class = "p" > ,< / span > < span class = "n" > strong< / span > < span class = "p" > ,< / span > < span class = "n" > nonatomic< / span > < span class = "p" > ,< / span > < span class = "n" > nullable< / span > < span class = "p" > )< / span > < span class = "n" > ObjectType< / span > < span class = "n" > object< / span > < span class = "p" > ;< / span > < / code > < / pre >
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< / div >
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< div class = "language" >
< p class = "aside-title" > Swift< / p >
< pre class = "highlight swift" > < code > < span class = "k" > var< / span > < span class = "nv" > object< / span > < span class = "p" > :< / span > < span class = "kt" > ObjectType< / span > < span class = "p" > ?< / span > < span class = "p" > {< / span > < span class = "k" > get< / span > < span class = "p" > }< / span > < / code > < / pre >
< / div >
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< / div >
< / section >
< / div >
< / li >
< li class = "item" >
< div >
< code >
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< a name = "/c:objc(cs)IGListBindingSectionController(py)viewModels" > < / a >
< a name = "//apple_ref/objc/Property/viewModels" class = "dashAnchor" > < / a >
< a class = "token" href = "#/c:objc(cs)IGListBindingSectionController(py)viewModels" > viewModels< / a >
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< / code >
< / div >
< div class = "height-container" >
< div class = "pointer-container" > < / div >
< section class = "section" >
< div class = "pointer" > < / div >
< div class = "abstract" >
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< p > The array of view models created from the data source. Values are changed when the top-level object changes or by
calling < code > < a href = "../Classes/IGListBindingSectionController.html#/c:objc(cs)IGListBindingSectionController(im)updateAnimated:completion:" > -updateAnimated:completion:< / a > < / code > manually.< / p >
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< / div >
< div class = "declaration" >
< h4 > Declaration< / h4 >
< div class = "language" >
< p class = "aside-title" > Objective-C< / p >
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< pre class = "highlight objective_c" > < code > < span class = "k" > @property< / span > < span class = "p" > (< / span > < span class = "n" > readonly< / span > < span class = "p" > ,< / span > < span class = "n" > strong< / span > < span class = "p" > ,< / span > < span class = "n" > nonatomic< / span > < span class = "p" > )< / span >
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< span class = "n" > NSArray< / span > < span class = "o" > < < / span > < span class = "n" > id< / span > < span class = "o" > < < / span > < span class = "n" > < a href = "../Protocols/IGListDiffable.html" > IGListDiffable< / a > < / span > < span class = "o" > > > < / span > < span class = "o" > *< / span > < span class = "n" > _Nonnull< / span > < span class = "n" > viewModels< / span > < span class = "p" > ;< / span > < / code > < / pre >
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< / div >
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< div class = "language" >
< p class = "aside-title" > Swift< / p >
< pre class = "highlight swift" > < code > < span class = "k" > var< / span > < span class = "nv" > viewModels< / span > < span class = "p" > :< / span > < span class = "p" > [< / span > < span class = "kt" > ListDiffable< / span > < span class = "p" > ]< / span > < span class = "p" > {< / span > < span class = "k" > get< / span > < span class = "p" > }< / span > < / code > < / pre >
< / div >
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< / div >
< / section >
< / div >
< / li >
< li class = "item" >
< div >
< code >
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< a name = "/c:objc(cs)IGListBindingSectionController(im)updateAnimated:completion:" > < / a >
< a name = "//apple_ref/objc/Method/-updateAnimated:completion:" class = "dashAnchor" > < / a >
< a class = "token" href = "#/c:objc(cs)IGListBindingSectionController(im)updateAnimated:completion:" > -updateAnimated:completion:< / a >
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< / code >
< / div >
< div class = "height-container" >
< div class = "pointer-container" > < / div >
< section class = "section" >
< div class = "pointer" > < / div >
< div class = "abstract" >
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< p > Tells the section controller to query for new view models, diff the changes, and update its cells.< / p >
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< / div >
< div class = "declaration" >
< h4 > Declaration< / h4 >
< div class = "language" >
< p class = "aside-title" > Objective-C< / p >
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< pre class = "highlight objective_c" > < code > < span class = "k" > -< / span > < span class = "p" > (< / span > < span class = "kt" > void< / span > < span class = "p" > )< / span > < span class = "nf" > updateAnimated< / span > < span class = "p" > :(< / span > < span class = "n" > BOOL< / span > < span class = "p" > )< / span > < span class = "nv" > animated< / span >
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< span class = "nf" > completion< / span > < span class = "p" > :(< / span > < span class = "n" > nullable< / span > < span class = "kt" > void< / span > < span class = "p" > (< / span > < span class = "o" > ^< / span > < span class = "p" > )(< / span > < span class = "n" > BOOL< / span > < span class = "p" > ))< / span > < span class = "nv" > completion< / span > < span class = "p" > ;< / span > < / code > < / pre >
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< / div >
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< div class = "language" >
< p class = "aside-title" > Swift< / p >
< pre class = "highlight swift" > < code > < span class = "kd" > func< / span > < span class = "nf" > update< / span > < span class = "p" > (< / span > < span class = "nv" > animated< / span > < span class = "p" > :< / span > < span class = "kt" > Bool< / span > < span class = "p" > ,< / span > < span class = "nv" > completion< / span > < span class = "p" > :< / span > < span class = "p" > ((< / span > < span class = "kt" > Bool< / span > < span class = "p" > )< / span > < span class = "o" > -> < / span > < span class = "kt" > Void< / span > < span class = "p" > )?< / span > < span class = "o" > =< / span > < span class = "kc" > nil< / span > < span class = "p" > )< / span > < / code > < / pre >
< / div >
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< / div >
< div >
< h4 > Parameters< / h4 >
< table class = "graybox" >
< tbody >
< tr >
< td >
< code >
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< em > animated< / em >
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< / code >
< / td >
< td >
< div >
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< p > A flag indicating if the transition should be animated or not.< / p >
< / div >
< / td >
< / tr >
< tr >
< td >
< code >
< em > completion< / em >
< / code >
< / td >
< td >
< div >
< p > An optional completion block executed after updates finish. Parameter is YES if updates were applied.< / p >
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< / div >
< / td >
< / tr >
< / tbody >
< / table >
< / div >
< / section >
< / div >
< / li >
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< li class = "item" >
< div >
< code >
< a name = "/c:objc(cs)IGListBindingSectionController(im)moveObjectFromIndex:toIndex:" > < / a >
< a name = "//apple_ref/objc/Method/-moveObjectFromIndex:toIndex:" class = "dashAnchor" > < / a >
< a class = "token" href = "#/c:objc(cs)IGListBindingSectionController(im)moveObjectFromIndex:toIndex:" > -moveObjectFromIndex:toIndex:< / a >
< / code >
< / div >
< div class = "height-container" >
< div class = "pointer-container" > < / div >
< section class = "section" >
< div class = "pointer" > < / div >
< div class = "abstract" >
< p > Notifies the section that a list object should move within a section as the result of interactive reordering.< / p >
< div class = "aside aside-note" >
< p class = "aside-title" > Note< / p >
< p > this method must be implemented if interactive reordering is enabled. To ensure updating the internal viewModels array, < strong > calling super is required< / strong > , preferably before your own implementation.< / p >
< / div >
< / div >
< div class = "declaration" >
< h4 > Declaration< / h4 >
< div class = "language" >
< p class = "aside-title" > Objective-C< / p >
< pre class = "highlight objective_c" > < code > < span class = "k" > -< / span > < span class = "p" > (< / span > < span class = "kt" > void< / span > < span class = "p" > )< / span > < span class = "nf" > moveObjectFromIndex< / span > < span class = "p" > :(< / span > < span class = "n" > NSInteger< / span > < span class = "p" > )< / span > < span class = "nv" > sourceIndex< / span >
< span class = "nf" > toIndex< / span > < span class = "p" > :(< / span > < span class = "n" > NSInteger< / span > < span class = "p" > )< / span > < span class = "nv" > destinationIndex< / span > < span class = "p" > ;< / span > < / code > < / pre >
< / div >
< div class = "language" >
< p class = "aside-title" > Swift< / p >
< pre class = "highlight swift" > < code > < span class = "kd" > func< / span > < span class = "nf" > moveObject< / span > < span class = "p" > (< / span > < span class = "n" > from< / span > < span class = "nv" > sourceIndex< / span > < span class = "p" > :< / span > < span class = "kt" > Int< / span > < span class = "p" > ,< / span > < span class = "n" > to< / span > < span class = "nv" > destinationIndex< / span > < span class = "p" > :< / span > < span class = "kt" > Int< / span > < span class = "p" > )< / span > < / code > < / pre >
< / div >
< / div >
< div >
< h4 > Parameters< / h4 >
< table class = "graybox" >
< tbody >
< tr >
< td >
< code >
< em > sourceIndex< / em >
< / code >
< / td >
< td >
< div >
< p > The starting index of the object.< / p >
< / div >
< / td >
< / tr >
< tr >
< td >
< code >
< em > destinationIndex< / em >
< / code >
< / td >
< td >
< div >
< p > The ending index of the object.< / p >
< / div >
< / td >
< / tr >
< / tbody >
< / table >
< / div >
< / section >
< / div >
< / li >
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< / ul >
< / div >
< / section >
< / section >
< section id = "footer" >
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< p > © 2019 < a class = "link" href = "https://twitter.com/fbOpenSource" target = "_blank" rel = "external" > Instagram< / a > . All rights reserved. (Last updated: 2019-11-20)< / p >
< p > Generated by < a class = "link" href = "https://github.com/realm/jazzy" target = "_blank" rel = "external" > jazzy ♪♫ v0.12.0< / a > , a < a class = "link" href = "https://realm.io" target = "_blank" rel = "external" > Realm< / a > project.< / p >
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< / section >
< / article >
< / div >
< / body >
< / div >
< / html >
