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Problem with setSplitHorizontal() in AbstractSplitBox [message #1822197]

Sat, 29 February 2020 17:00

Krzysztof Leja

Messages: 55
Registered: April 2019

Member

Hi,
In my Scout 9 application I use split box field on the form.
I would like to give the user the opportunity to change the split position between vertical or horizontal. So I added a button that toggle value true/false in method setSplitHorizontal() on this field.

But running this method does nothing. The split position does not change from its default position, set with the getConfiguredSplitHorizontal() method during form initialization.

In network debug view in internet browser I see, that after clicking this button and changing the value with the setSplitHorizontal() method, nothing is sent back from the server to the browser except the field identifier, for example:

{"#":52}

Is there any simple way to force the Scout framework to make this change work?

Earlier in this forum, in a similar problem with refreshing the table header text after changing it, the following code helped:

TableEvent event = new TableEvent(table, TableEvent.TYPE_COLUMN_HEADERS_UPDATED);
event.setColumns(table.getColumns());
table.fireTableEventInternal(event);

But SplitBox do not have any fire* method.

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Re: Problem with setSplitHorizontal() in AbstractSplitBox [message #1822243 is a reply to message #1822197]

Mon, 02 March 2020 11:50

Beat Schwarzentrub

Messages: 214
Registered: November 2010

Senior Member

Unfortunately, changing the splitter orientation at runtime is not currently supported.

You have two options:

Let the user select the desired orientation in some kind of "user settings" dialog and apply the setting when the application is restarted.
If you really need the dynamic feature, you could try the following: When changing the orientation, remove and destroy the current SplitBox field from the container field, create a new instance with the changed orientation and add it to the container field again (using AbstractCompositeField#removeField(IFormField) and AbstractCompositeField#addField(IFormField)). If your split box contains value fields, you have to manually transfer all values to the new corresponding new field instances. This is not an optimal solution, since it requires quite a but of code and resources, but it should principally work.

Regards,
Beat

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