@Override
public boolean addFoldRegion(@NotNull final FoldRegion region) {
assertIsDispatchThreadForEditor();
if (!isFoldingEnabled()) {
return false;
}
if (!myIsBatchFoldingProcessing) {
LOG.error("Fold regions must be added or removed inside batchFoldProcessing() only.");
return false;
}
myFoldRegionsProcessed = true;
if (myFoldTree.addRegion(region)) {
final FoldingGroup group = region.getGroup();
if (group != null) {
myGroups.putValue(group, region);
}
for (FoldingListener listener : myListeners) {
listener.onFoldRegionStateChange(region);
}
return true;
}
return false;
}
private void notifyListenersOnFoldRegionStateChange(@NotNull FoldRegion foldRegion) {
for (FoldingListener listener : myListeners) {
listener.onFoldRegionStateChange(foldRegion);
}
}
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();
}
}
private void doNotifyBatchFoldingProcessingDone() {
myFoldTree.rebuild();
for (FoldingListener listener : myListeners) {
listener.onFoldProcessingEnd();
}
myEditor.updateCaretCursor();
myEditor.recalculateSizeAndRepaint();
if (myEditor.getGutterComponentEx().isFoldingOutlineShown()) {
myEditor.getGutterComponentEx().repaint();
}
LogicalPosition caretPosition = myEditor.getCaretModel().getLogicalPosition();
// 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.
if (caretPosition.visualPositionAware) {
caretPosition = new LogicalPosition(caretPosition.line, caretPosition.column);
}
int caretOffset = myEditor.logicalPositionToOffset(caretPosition);
boolean hasBlockSelection = myEditor.getSelectionModel().hasBlockSelection();
int selectionStart = myEditor.getSelectionModel().getSelectionStart();
int selectionEnd = myEditor.getSelectionModel().getSelectionEnd();
int column = -1;
int line = -1;
int offsetToUse = -1;
FoldRegion collapsed = myFoldTree.fetchOutermost(caretOffset);
if (myCaretPositionSaved) {
int savedOffset =
myEditor.logicalPositionToOffset(new LogicalPosition(mySavedCaretY, mySavedCaretX));
FoldRegion collapsedAtSaved = myFoldTree.fetchOutermost(savedOffset);
if (collapsedAtSaved == null) {
column = mySavedCaretX;
line = mySavedCaretY;
} else {
offsetToUse = collapsedAtSaved.getStartOffset();
}
}
if (collapsed != null && column == -1) {
line = collapsed.getDocument().getLineNumber(collapsed.getStartOffset());
column = myEditor.offsetToLogicalPosition(collapsed.getStartOffset()).column;
}
boolean oldCaretPositionSaved = myCaretPositionSaved;
if (offsetToUse >= 0) {
myEditor.getCaretModel().moveToOffset(offsetToUse);
} else if (column != -1) {
myEditor.getCaretModel().moveToLogicalPosition(new LogicalPosition(line, column));
} else {
myEditor.getCaretModel().moveToLogicalPosition(caretPosition);
}
myCaretPositionSaved = oldCaretPositionSaved;
if (!hasBlockSelection && selectionStart < myEditor.getDocument().getTextLength()) {
myEditor.getSelectionModel().setSelection(selectionStart, selectionEnd);
}
if (mySavedCaretShift > 0) {
myEditor.getScrollingModel().disableAnimation();
int scrollTo =
myEditor.visibleLineToY(myEditor.getCaretModel().getVisualPosition().line)
- mySavedCaretShift;
myEditor.getScrollingModel().scrollVertically(scrollTo);
myEditor.getScrollingModel().enableAnimation();
}
}