REORDER AND SELECTION PERSISTENCE OF DISPLAYED OBJECTS

Providing a thumbnail view of a document or other dataset is disclosed. A user input data associated with a user interaction with a thumbnail as displayed in a viewer component is received via a user interface associated with a viewer component. A tracking data reflecting the interaction is stored in a local data structure. The tracking data stored in the local data structure is used to ensure that a thumbnail affected by the user input is displayed by the viewer component in a manner that reflects the user input.