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  "title" : "IKImageBrowserDataSource Protocol"
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# IKImageBrowserDataSource Protocol

The `IKImageBrowserDataSource` informal protocol declares the methods that an instance of the [`IKImageBrowserView`](/documentation/Quartz/IKImageBrowserView)  class uses to access the contents of its data source object.

## Topics

### Providing Information About Items (Required)

  <doc://com.apple.documentation/documentation/ObjectiveC/NSObject-swift.class/numberOfItems(inImageBrowser:)>

  <doc://com.apple.documentation/documentation/ObjectiveC/NSObject-swift.class/imageBrowser(_:itemAt:)>

### Supporting Item Editing (Optional)

  <doc://com.apple.documentation/documentation/ObjectiveC/NSObject-swift.class/imageBrowser(_:removeItemsAt:)>

  <doc://com.apple.documentation/documentation/ObjectiveC/NSObject-swift.class/imageBrowser(_:moveItemsAt:to:)>

  <doc://com.apple.documentation/documentation/ObjectiveC/NSObject-swift.class/imageBrowser(_:writeItemsAt:to:)>

### Providing Information About Groups (Optional)

  <doc://com.apple.documentation/documentation/ObjectiveC/NSObject-swift.class/numberOfGroups(inImageBrowser:)>

  <doc://com.apple.documentation/documentation/ObjectiveC/NSObject-swift.class/imageBrowser(_:groupAt:)>


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