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);
}
public void collapseFoldRegion(FoldRegion region) {
assertIsDispatchThread();
if (!region.isExpanded()) return;
if (!myIsBatchFoldingProcessing) {
LOG.error("Fold regions must be collapsed or expanded inside batchFoldProcessing() only.");
}
LogicalPosition caretPosition = myEditor.getCaretModel().getLogicalPosition();
int caretOffset = myEditor.logicalPositionToOffset(caretPosition);
if (FoldRegionsTree.contains(region, caretOffset)) {
if (myDoNotCollapseCaret) return;
if (!myCaretPositionSaved) {
mySavedCaretX = caretPosition.column;
mySavedCaretY = caretPosition.line;
myCaretPositionSaved = true;
}
}
int selectionStart = myEditor.getSelectionModel().getSelectionStart();
int selectionEnd = myEditor.getSelectionModel().getSelectionEnd();
if (FoldRegionsTree.contains(region, selectionStart - 1)
|| FoldRegionsTree.contains(region, selectionEnd))
myEditor.getSelectionModel().removeSelection();
myFoldRegionsProcessed = true;
((FoldRegionImpl) region).setExpandedInternal(false);
notifyListenersOnFoldRegionStateChange(region);
}
private void runBatchFoldingOperation(final Runnable operation, final boolean dontCollapseCaret) {
assertIsDispatchThread();
boolean oldDontCollapseCaret = myDoNotCollapseCaret;
myDoNotCollapseCaret |= dontCollapseCaret;
boolean oldBatchFlag = myIsBatchFoldingProcessing;
if (!oldBatchFlag) {
mySavedCaretShift =
myEditor.visibleLineToY(myEditor.getCaretModel().getVisualPosition().line)
- myEditor.getScrollingModel().getVerticalScrollOffset();
}
myIsBatchFoldingProcessing = true;
myFoldTree.myCachedLastIndex = -1;
operation.run();
myFoldTree.myCachedLastIndex = -1;
if (!oldBatchFlag) {
if (myFoldRegionsProcessed) {
notifyBatchFoldingProcessingDone();
myFoldRegionsProcessed = false;
}
myIsBatchFoldingProcessing = false;
}
myDoNotCollapseCaret = oldDontCollapseCaret;
}
public void documentChanged(DocumentEvent event) {
if (((DocumentEx) event.getDocument()).isInBulkUpdate()) {
myFoldTree.clear();
} else {
updateCachedOffsets();
}
}
@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;
}
public int getFoldedLinesCountBefore(int offset) {
if (!myDocumentChangeProcessed && myEditor.getDocument().isInEventsHandling()) {
// There is a possible case that this method is called on document update before fold regions
// are recalculated.
// We return zero in such situations then.
return 0;
}
return myFoldTree.getFoldedLinesCountBefore(offset);
}
@Override
@Nullable
public FoldRegion getFoldingPlaceholderAt(Point p) {
assertReadAccess();
LogicalPosition pos = myEditor.xyToLogicalPosition(p);
int line = pos.line;
if (line >= myEditor.getDocument().getLineCount()) return null;
int offset = myEditor.logicalPositionToOffset(pos);
return myFoldTree.fetchOutermost(offset);
}
public void removeFoldRegion(@NotNull final FoldRegion region) {
assertIsDispatchThread();
if (!myIsBatchFoldingProcessing) {
LOG.error("Fold regions must be added or removed inside batchFoldProcessing() only.");
}
region.setExpanded(true);
final FoldingGroup group = region.getGroup();
if (group != null) {
myGroups.removeValue(group, region);
}
myFoldTree.removeRegion(region);
myFoldRegionsProcessed = true;
region.dispose();
}
public void expandFoldRegion(FoldRegion region) {
assertIsDispatchThread();
if (region.isExpanded() || region.shouldNeverExpand()) return;
if (!myIsBatchFoldingProcessing) {
LOG.error("Fold regions must be collapsed or expanded inside batchFoldProcessing() only.");
}
if (myCaretPositionSaved) {
int savedOffset =
myEditor.logicalPositionToOffset(new LogicalPosition(mySavedCaretY, mySavedCaretX));
FoldRegion[] allCollapsed = myFoldTree.fetchCollapsedAt(savedOffset);
if (allCollapsed.length == 1 && allCollapsed[0] == region) {
LogicalPosition pos = new LogicalPosition(mySavedCaretY, mySavedCaretX);
myEditor.getCaretModel().moveToLogicalPosition(pos);
}
}
myFoldRegionsProcessed = true;
((FoldRegionImpl) region).setExpandedInternal(true);
notifyListenersOnFoldRegionStateChange(region);
}
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);
}
public FoldRegion[] fetchVisible() {
return myFoldTree.fetchVisible();
}
public FoldRegion[] fetchCollapsedAt(int offset) {
return myFoldTree.fetchCollapsedAt(offset);
}
@Override
public boolean intersectsRegion(int startOffset, int endOffset) {
return myFoldTree.intersectsRegion(startOffset, endOffset);
}
@Override
@Nullable
public FoldRegion[] fetchTopLevel() {
return myFoldTree.fetchTopLevel();
}
@Override
@Nullable
public FoldRegion fetchOutermost(int offset) {
return myFoldTree.fetchOutermost(offset);
}
void onBulkDocumentUpdateFinished() {
myFoldTree.rebuild();
}
@Override
@Nullable
public FoldRegion getCollapsedRegionAtOffset(int offset) {
return myFoldTree.fetchOutermost(offset);
}
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();
}
}
@Override
public void rebuild() {
if (!myEditor.getDocument().isInBulkUpdate()) {
myFoldTree.rebuild();
}
}
public int getFoldedLinesCountBefore(int offset) {
return myFoldTree.getFoldedLinesCountBefore(offset);
}
@Override
public void rebuild() {
myFoldTree.rebuild();
}
public void doClearFoldRegions() {
myGroups.clear();
myFoldTree.clear();
}
@Override
public String toString() {
return Arrays.toString(myFoldTree.fetchTopLevel());
}
@Nullable
@Override
public FoldRegion getFoldRegion(int startOffset, int endOffset) {
assertReadAccess();
return myFoldTree.getRegionAt(startOffset, endOffset);
}
@Override
public int getLastCollapsedRegionBefore(int offset) {
return myFoldTree.getLastTopLevelIndexBefore(offset);
}
private void updateCachedOffsets() {
myFoldTree.updateCachedOffsets();
}
void onBulkDocumentUpdateStarted() {
myFoldTree.clearCachedValues();
}
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();
}
}
@NotNull
@Override
public String dumpState() {
return Arrays.toString(myFoldTree.fetchTopLevel());
}
@Override
@NotNull
public FoldRegion[] getAllFoldRegions() {
assertReadAccess();
return myFoldTree.fetchAllRegions();
}