tdf#130857 VclBuilder: Extract helpers to insert combo/list box items

Extract code to insert items into the VCL implementations
ComboBox and ListBox from VclBuilder::handleObject into a
new helper method VclBuilder::insertComboBoxOrListBoxItems.

This is in preparation of being able to make `handleObject`
reusable for an upcoming QtBuilder, s. WIP Gerrit change [1]
(which still duplicates `handleObject` in current patch set 28).

[1] https://gerrit.libreoffice.org/c/core/+/161831

Change-Id: Ic6d014e6c9886c34a889b70bbf06a979664daba6
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/173736
Reviewed-by: Michael Weghorn <m.weghorn@posteo.de>
Tested-by: Jenkins

0 files changed, 0 insertions, 0 deletions