SAS/AF Software: Class Dictionary

Using the Form Data Model Class

Drag and Drop and the Form Data Model

The drag and drop functionality is inherited from the Widget class and its functionality is extended by the Form Data Model class. During a drag and drop action involving the attached viewer, a sequence of methods is called on the viewer. For more general information about the drag and drop operations, see SAS/AF online help. The following methods are forwarded to the model for processing:

_completeDrag
_drop
_getDragData
_validateDropData.

The following drag-and-drop methods are used by the attached viewer to query the current drag and drop representations and actions the viewer should set on itself.

_getDragInfo
_getDropInfo

DATAFORM Catalog Entries

The Form Data Model class contains the functionality for reading from and writing to DATAFORM catalog entries. DATAFORM catalog entries are used to save the customizations of a model or a viewer connected to a model. Because DATAFORM entries are not tied directly to a particular object, multiple viewers can use the same DATAFORM entry. DATAFORM entries can also share customization information between a data form and a data table and between a form editor and a table editor.

You can make a data form in a frame and specify an associated DATAFORM catalog entry. You can then make some customizations, such as removing a column from the display. When you end from the frame or run the frame, this information is saved with the DATAFORM catalog entry. You can then make a data table in a separate frame and specify the same DATAFORM catalog entry, and the column you had removed is not displayed.

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