comboModel = new ComboModelImpl(treeModel);
comboBox = new KongaComboBox(comboModel);
comboBox.setPrototypeDisplayValue("XXXXXXXXXXXXXXXXXXXXxXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX");
comboBox.setMaximumRowCount(Intervals.valueWithin(comboModel.getSize(), 8, 20));
TreeComboBoxSelectionControl.install(comboBox);
renderer = new DefaultTreeComboBoxRenderer(comboModel, new IntegrationEntityListDecorRenderer());
comboBox.setRenderer(renderer);
rebuilder = new ComboRebuilder();
modificationListener = new ProjectPropertyChangeSupport(explorer.getProject(), false);
modificationListener.addPropertyChangeListener(IntegrationEntity.MODIFIED_AT_PROPERTY, rebuilder);
treeModel.addTreeModelListener(rebuilder);