void loadFromEditor(@NotNull Editor editor) {
assertDispatchThread();
LOG.assertTrue(!editor.isDisposed());
clear();
PsiDocumentManager documentManager = PsiDocumentManager.getInstance(myProject);
documentManager.commitDocument(editor.getDocument());
PsiFile file = documentManager.getPsiFile(editor.getDocument());
SmartPointerManager smartPointerManager = SmartPointerManager.getInstance(myProject);
EditorFoldingInfo info = EditorFoldingInfo.get(editor);
FoldRegion[] foldRegions = editor.getFoldingModel().getAllFoldRegions();
for (FoldRegion region : foldRegions) {
if (!region.isValid()) continue;
PsiElement element = info.getPsiElement(region);
boolean expanded = region.isExpanded();
boolean collapseByDefault =
element != null
&& FoldingPolicy.isCollapseByDefault(element)
&& !FoldingUtil.caretInsideRange(editor, TextRange.create(region));
if (collapseByDefault == expanded || element == null) {
FoldingInfo fi = new FoldingInfo(region.getPlaceholderText(), expanded);
if (element != null) {
myPsiElements.add(smartPointerManager.createSmartPsiElementPointer(element, file));
element.putUserData(FOLDING_INFO_KEY, fi);
} else if (region.isValid()) {
myRangeMarkers.add(region);
region.putUserData(FOLDING_INFO_KEY, fi);
}
}
}
}
@Override
public void setToEditor(@NotNull final Editor editor) {
assertDispatchThread();
final PsiManager psiManager = PsiManager.getInstance(myProject);
if (psiManager.isDisposed()) return;
if (!myFile.isValid()) return;
final PsiFile psiFile = psiManager.findFile(myFile);
if (psiFile == null) return;
if (!mySerializedElements.isEmpty()) {
// Restore postponed state
assert myPsiElements.isEmpty() : "Sequential deserialization";
for (SerializedPsiElement entry : mySerializedElements) {
PsiElement restoredElement =
FoldingPolicy.restoreBySignature(psiFile, entry.mySerializedElement);
if (restoredElement != null && restoredElement.isValid()) {
myPsiElements.add(
SmartPointerManager.getInstance(myProject)
.createSmartPsiElementPointer(restoredElement));
restoredElement.putUserData(FOLDING_INFO_KEY, entry.myFoldingInfo);
}
}
mySerializedElements.clear();
}
Map<PsiElement, FoldingDescriptor> ranges = null;
for (SmartPsiElementPointer<PsiElement> ptr : myPsiElements) {
PsiElement element = ptr.getElement();
if (element == null || !element.isValid()) {
continue;
}
if (ranges == null) {
ranges = buildRanges(editor, psiFile);
}
FoldingDescriptor descriptor = ranges.get(element);
if (descriptor == null) {
continue;
}
TextRange range = descriptor.getRange();
FoldRegion region =
FoldingUtil.findFoldRegion(editor, range.getStartOffset(), range.getEndOffset());
if (region != null) {
FoldingInfo fi = element.getUserData(FOLDING_INFO_KEY);
boolean state = fi != null && fi.expanded;
region.setExpanded(state);
}
}
for (RangeMarker marker : myRangeMarkers) {
if (!marker.isValid()) {
continue;
}
FoldRegion region =
FoldingUtil.findFoldRegion(editor, marker.getStartOffset(), marker.getEndOffset());
FoldingInfo info = marker.getUserData(FOLDING_INFO_KEY);
if (region == null) {
if (info != null) {
region =
editor
.getFoldingModel()
.addFoldRegion(marker.getStartOffset(), marker.getEndOffset(), info.placeHolder);
}
if (region == null) {
return;
}
}
boolean state = info != null && info.expanded;
region.setExpanded(state);
}
}