@Override
public void dispose() {
editor.getSelectedElementField().removeListener(structureListener);
editor.getStructureField().removeListener(structureListener);
super.dispose();
}
public static void revealInEditor(IEditorPart part, StructureElement element) {
if (element == null || part == null) return;
if (part instanceof AbstractLangStructureEditor) {
((AbstractLangStructureEditor) part).setElementSelection(element);
return;
}
if (part instanceof ITextEditor) {
AbstractLangStructureEditor.setElementSelection((ITextEditor) part, element);
return;
}
}
/**
* Note: createControl/dispose can be called multiple times per receiver lifetime. (it's a bit
* unusual/strange for a control to allow that, but it's helpfull if LangOutlinePage works like
* that)
*/
@Override
public void createControl(Composite parent) {
super.createControl(parent);
getTreeViewer().setContentProvider(new StructureElementContentProvider());
getTreeViewer().setLabelProvider(StructureElementLabelProvider.createLangLabelProvider());
customizeCreateControl();
editor.getStructureField().registerListener(structureListener);
editor.getSelectedElementField().registerListener(structureListener);
updateTreeViewer();
}
protected void updateSelectionFromEditor() {
StructuredSelection newSelection = editor.getSelectedElementAsStructureSelection();
try {
updatingFromEditor = true;
getTreeViewer().setSelection(newSelection, true);
} finally {
updatingFromEditor = false;
}
}
@Override
protected void treeViewerPostSelectionChanged(SelectionChangedEvent event) {
Object firstElement = ((IStructuredSelection) event.getSelection()).getFirstElement();
if (firstElement instanceof StructureElement) {
StructureElement structureElement = (StructureElement) firstElement;
if (!updatingFromEditor) {
editor.setElementSelection(structureElement);
}
}
super.treeViewerPostSelectionChanged(event);
}
protected void updateTreeViewer() {
if (getTreeViewer() == null) {
return;
}
SourceFileStructure structure = editor.getSourceStructure();
if (getTreeViewer().getInput() != structure) {
getTreeViewer().setInput(structure);
getTreeViewer().refresh();
}
updateSelectionFromEditor();
}
