Difference between revisions of "Documentation/DevGuide/Forms/Loadable Forms"
OOoWikiBot (Talk | contribs) m (Robot: Changing Category:Documentation/Developers Guide/Forms) |
OOoWikiBot (Talk | contribs) m (FINAL VERSION FOR L10N) |
||
Line 6: | Line 6: | ||
|NextPage=Documentation/DevGuide/Forms/Sub Forms | |NextPage=Documentation/DevGuide/Forms/Sub Forms | ||
}} | }} | ||
− | {{DISPLAYTITLE:Loadable Forms}} | + | {{Documentation/DevGuideLanguages|Documentation/DevGuide/Forms/{{SUBPAGENAME}}}} |
+ | {{DISPLAYTITLE:Loadable Forms}} | ||
<!--<idltopic>com.sun.star.form.XLoadable;com.sun.star.form.XLoadListener</idltopic>--> | <!--<idltopic>com.sun.star.form.XLoadable;com.sun.star.form.XLoadListener</idltopic>--> | ||
A major difference of data forms compared to the underlying row set is the that forms are ''loaded'', and provide an interface to manipulate this state. | A major difference of data forms compared to the underlying row set is the that forms are ''loaded'', and provide an interface to manipulate this state. |
Revision as of 13:00, 15 May 2009
- Forms as Row Sets
- Loadable Forms
- Sub Forms
- Filtering and Sorting
- Parameters
A major difference of data forms compared to the underlying row set is the that forms are loaded, and provide an interface to manipulate this state.
XLoadable xLoad = (XLoadable)FLTools.getParent(aControlModel, XLoadable.class); xLoad.reload();
Loading is the same as executing the underlying row set, that is, invoking the <idlml>com.sun.star.sdbc.XRowSet:execute</idlml>() method. The com.sun.star.form.XLoadable is designed to fit the needs of a form document, for example, it a unloads an already loaded form.
The example above shows how to reload a form. Reloading is executing the row set again. Using reload
instead of execute
has the advantage of advanced listener mechanisms:
Look at the com.sun.star.form.XLoadable interface. You can add a com.sun.star.form.XLoadListener. This listener not only tells you when load-related events have occurred that is achieved by the com.sun.star.sdbc.XRowSetListener, but also when they are about to happen. In a complex scenario where different listeners are added to different aspects of a form, you use the <idlml>com.sun.star.form.XLoadable:reload</idlml>() call to disable all other listeners temporarily. Re-executing a row set is a complex process, thus it triggers a lot of events that are only an after effect of the re-execution.
An additional difference between loading and executing is the positioning of the row set: When using <idlml>com.sun.star.sdbc.XRowSet:execute</idlml>(), the set is positioned before the first record. When you use <idlml>com.sun.star.form.XLoadable:load</idlml>(), the set is positioned on the first record, as you would expect from a form.
Content on this page is licensed under the Public Documentation License (PDL). |