public void collapseFoldRegion(FoldRegion region) {
assertIsDispatchThreadForEditor();
if (!region.isExpanded()) return;
if (!myIsBatchFoldingProcessing) {
LOG.error("Fold regions must be collapsed or expanded inside batchFoldProcessing() only.");
}
List<Caret> carets = myEditor.getCaretModel().getAllCarets();
for (Caret caret : carets) {
LogicalPosition caretPosition = caret.getLogicalPosition();
int caretOffset = myEditor.logicalPositionToOffset(caretPosition);
if (FoldRegionsTree.contains(region, caretOffset)) {
if (myDoNotCollapseCaret) return;
}
}
for (Caret caret : carets) {
LogicalPosition caretPosition = caret.getLogicalPosition();
int caretOffset = myEditor.logicalPositionToOffset(caretPosition);
if (FoldRegionsTree.contains(region, caretOffset)) {
if (caret.getUserData(SAVED_CARET_POSITION) == null) {
caret.putUserData(SAVED_CARET_POSITION, caretPosition.withoutVisualPositionInfo());
}
}
}
myFoldRegionsProcessed = true;
((FoldRegionImpl) region).setExpandedInternal(false);
notifyListenersOnFoldRegionStateChange(region);
}
private static Caret getNextCaretToProcess(@NotNull Editor editor) {
for (Caret caret : editor.getCaretModel().getAllCarets()) {
if (caret.getUserData(CARET_PROCESSED) == null) {
return caret;
}
}
return null;
}
public void expandFoldRegion(FoldRegion region) {
assertIsDispatchThreadForEditor();
if (region.isExpanded() || region.shouldNeverExpand()) return;
if (!myIsBatchFoldingProcessing) {
LOG.error("Fold regions must be collapsed or expanded inside batchFoldProcessing() only.");
}
for (Caret caret : myEditor.getCaretModel().getAllCarets()) {
LogicalPosition savedPosition = caret.getUserData(SAVED_CARET_POSITION);
if (savedPosition != null) {
int savedOffset = myEditor.logicalPositionToOffset(savedPosition);
FoldRegion[] allCollapsed = myFoldTree.fetchCollapsedAt(savedOffset);
if (allCollapsed.length == 1 && allCollapsed[0] == region) {
caret.moveToLogicalPosition(savedPosition);
}
}
}
myFoldRegionsProcessed = true;
((FoldRegionImpl) region).setExpandedInternal(true);
notifyListenersOnFoldRegionStateChange(region);
}
private void notifyBatchFoldingProcessingDone(final boolean moveCaretFromCollapsedRegion) {
rebuild();
for (FoldingListener listener : myListeners) {
listener.onFoldProcessingEnd();
}
myEditor.updateCaretCursor();
myEditor.recalculateSizeAndRepaint();
myEditor.getGutterComponentEx().updateSize();
myEditor.getGutterComponentEx().repaint();
for (Caret caret : myEditor.getCaretModel().getAllCarets()) {
// There is a possible case that caret position is already visual position aware. But visual
// position depends on number of folded
// logical lines as well, hence, we can't be sure that target logical position defines correct
// visual position because fold
// regions have just changed. Hence, we use 'raw' logical position instead.
LogicalPosition caretPosition = caret.getLogicalPosition().withoutVisualPositionInfo();
int caretOffset = myEditor.logicalPositionToOffset(caretPosition);
int selectionStart = caret.getSelectionStart();
int selectionEnd = caret.getSelectionEnd();
LogicalPosition positionToUse = null;
int offsetToUse = -1;
FoldRegion collapsed = myFoldTree.fetchOutermost(caretOffset);
LogicalPosition savedPosition = caret.getUserData(SAVED_CARET_POSITION);
if (savedPosition != null) {
int savedOffset = myEditor.logicalPositionToOffset(savedPosition);
FoldRegion collapsedAtSaved = myFoldTree.fetchOutermost(savedOffset);
if (collapsedAtSaved == null) {
positionToUse = savedPosition;
} else {
offsetToUse = collapsedAtSaved.getStartOffset();
}
}
if (collapsed != null && positionToUse == null) {
positionToUse = myEditor.offsetToLogicalPosition(collapsed.getStartOffset());
}
if (moveCaretFromCollapsedRegion && caret.isUpToDate()) {
if (offsetToUse >= 0) {
caret.moveToOffset(offsetToUse);
} else if (positionToUse != null) {
caret.moveToLogicalPosition(positionToUse);
} else {
caret.moveToLogicalPosition(caretPosition);
}
}
caret.putUserData(SAVED_CARET_POSITION, savedPosition);
if (isOffsetInsideCollapsedRegion(selectionStart)
|| isOffsetInsideCollapsedRegion(selectionEnd)) {
caret.removeSelection();
} else if (selectionStart < myEditor.getDocument().getTextLength()) {
caret.setSelection(selectionStart, selectionEnd);
}
}
if (mySavedCaretShift > 0) {
final ScrollingModel scrollingModel = myEditor.getScrollingModel();
scrollingModel.disableAnimation();
scrollingModel.scrollVertically(
myEditor.visibleLineToY(myEditor.getCaretModel().getVisualPosition().line)
- mySavedCaretShift);
scrollingModel.enableAnimation();
}
}