SelectionPattern

SelectionPattern is a user interface automation pattern that represents a control that can select one or more items. This pattern is implemented by controls such as list boxes, combo boxes, and tree views, which allow users to choose from a set of options. The primary purpose of SelectionPattern is to provide a standardized way for automation clients to interact with and retrieve information about the selected items within such controls.

Controls implementing SelectionPattern expose properties that indicate whether multiple items can be selected, the current selection, and the total number of items. Automation clients can use this pattern to programmatically determine which items are currently chosen, add or remove items from the selection, or select all items within the control. This is crucial for accessibility tools and automated testing scenarios, enabling them to understand and manipulate the user's choices.

The SelectionPattern interface typically includes methods for selecting, clearing, and toggling the selection state of items. It also provides access to the selected items, allowing the client to iterate through them or retrieve specific ones. By abstracting the underlying implementation details of different selection controls, SelectionPattern ensures a consistent experience for users and developers interacting with these UI elements through automation.