External value suppliers

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Chapter Data Aware Controls discussed form controls that exchange their value, as entered by the user, with database columns. At certain times, this type of form control initializes itself from the column, or writes its current value into the column.

In addition, list and combo box controls are able to retrieve, in various ways, their list content from a database.

Since OpenOffice.org 2.0.0, it is possible for form controls to exchange data with external components. This is a generalization of the data awareness concept: form controls are now able to bind their value to any external value supplier, without knowing anything about the value supplier except an abstract UNO interface.

Similarly, list and combo boxes can obtain their list content from an external component, as long as they support a certain interface.

The com.sun.star.form.binding module collects all interfaces and services related to this new functionality.

Content on this page is licensed under the Public Documentation License (PDL).
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