private static boolean isDeclarationVisible(PsiElement container, Editor editor) {
Rectangle viewRect = editor.getScrollingModel().getVisibleArea();
final TextRange range = DeclarationRangeUtil.getPossibleDeclarationAtRange(container);
if (range == null) {
return false;
}
LogicalPosition pos = editor.offsetToLogicalPosition(range.getStartOffset());
Point loc = editor.logicalPositionToXY(pos);
return loc.y >= viewRect.y;
}
@Override
public void invoke(
@NotNull final Project project, @NotNull final Editor editor, @NotNull PsiFile file) {
PsiDocumentManager.getInstance(project).commitAllDocuments();
PsiElement container = null;
WeakReference<LightweightHint> ref = editor.getUserData(MY_LAST_HINT_KEY);
if (ref != null) {
LightweightHint hint = ref.get();
if (hint != null && hint.isVisible()) {
hint.hide();
container = hint.getUserData(CONTAINER_KEY);
if (container != null && !container.isValid()) {
container = null;
}
}
}
StructureViewBuilder builder =
LanguageStructureViewBuilder.INSTANCE.getStructureViewBuilder(file);
if (builder instanceof TreeBasedStructureViewBuilder) {
StructureViewModel model =
((TreeBasedStructureViewBuilder) builder).createStructureViewModel();
boolean goOneLevelUp = true;
if (container == null) {
goOneLevelUp = false;
Object element = model.getCurrentEditorElement();
if (element instanceof PsiElement) {
container = (PsiElement) element;
}
}
while (true) {
if (container == null || container instanceof PsiFile) {
return;
}
if (goOneLevelUp) {
goOneLevelUp = false;
} else {
if (!isDeclarationVisible(container, editor)) {
break;
}
}
container = container.getParent();
while (container != null
&& DeclarationRangeUtil.getPossibleDeclarationAtRange(container) == null) {
container = container.getParent();
if (container instanceof PsiFile) return;
}
}
}
if (container == null) {
return;
}
final TextRange range = DeclarationRangeUtil.getPossibleDeclarationAtRange(container);
if (range == null) {
return;
}
final PsiElement _container = container;
ApplicationManager.getApplication()
.invokeLater(
new Runnable() {
@Override
public void run() {
LightweightHint hint =
EditorFragmentComponent.showEditorFragmentHint(editor, range, true, true);
if (hint != null) {
hint.putUserData(CONTAINER_KEY, _container);
editor.putUserData(MY_LAST_HINT_KEY, new WeakReference<LightweightHint>(hint));
}
}
});
}