public void updateBracesSelection(EditorCell newSelection) {
clearBracesSelection();
if (newSelection == null) {
return;
}
EditorCell cellToSelect = null;
if (getMatchingLabelAndCell(newSelection) != null) {
cellToSelect = newSelection;
} else if (newSelection instanceof EditorCell_Label) {
EditorCell_Label editorCell = (EditorCell_Label) newSelection;
if (editorCell.getCaretPosition() == 0) {
jetbrains.mps.openapi.editor.cells.EditorCell cell =
CellTraversalUtil.getPrevLeaf(editorCell);
if (cell instanceof EditorCell_Label) {
EditorCell_Label label = (EditorCell_Label) cell;
if (label.getWidth() == 0 && editorCell.getLeftInset() == 0) {
cellToSelect = label;
}
}
} else if (editorCell.getCaretPosition() == editorCell.getText().length()) {
jetbrains.mps.openapi.editor.cells.EditorCell cell =
CellTraversalUtil.getNextLeaf(editorCell);
if (cell instanceof EditorCell_Label) {
EditorCell_Label label = (EditorCell_Label) cell;
if (label.getWidth() == 0 && editorCell.getRightInset() == 0) {
cellToSelect = label;
}
}
}
}
if (cellToSelect != null) {
selectBraces(cellToSelect);
}
}
private boolean processSideDeletes(CellActionType type) {
// TODO: review this logic - it was originally copied from EditorComponentKeyboardHandler
final EditorCell selectedCell = getEditorCell();
if (type == CellActionType.DELETE
&& APICellAdapter.isLastPositionInBigCell(selectedCell)
&& !APICellAdapter.isFirstPositionInBigCell(selectedCell)) {
final EditorCell target;
EditorCell bigCellNextSibling =
CellTraversalUtil.getNextSibling(APICellAdapter.getContainingBigCell(selectedCell));
if (bigCellNextSibling != null) {
target = bigCellNextSibling;
} else {
EditorCell nextSibling =
CellTraversalUtil.getNextSibling(APICellAdapter.getContainingBigCell(selectedCell));
if (nextSibling != null) {
target = nextSibling;
} else {
target =
CellTraversalUtil.getNextLeaf(
selectedCell, jetbrains.mps.openapi.editor.cells.CellConditions.SELECTABLE);
}
}
if (target == null
|| ModelAccess.instance()
.runReadAction(
new Computable<Boolean>() {
@Override
public Boolean compute() {
return jetbrains.mps.util.SNodeOperations.isAncestor(
target.getSNode(), selectedCell.getSNode());
}
})) return false;
return getEditorComponent().getActionHandler().executeAction(target, type);
}
if (type == CellActionType.BACKSPACE
&& APICellAdapter.isFirstPositionInBigCell(selectedCell)
&& !APICellAdapter.isLastPositionInBigCell(selectedCell)) {
final EditorCell target;
EditorCell bigCellPrevSibling =
CellTraversalUtil.getPrevSibling(APICellAdapter.getContainingBigCell(selectedCell));
if (bigCellPrevSibling != null) {
target = bigCellPrevSibling;
} else {
EditorCell prevSibling = CellTraversalUtil.getPrevSibling(selectedCell);
if (prevSibling != null) {
target = prevSibling;
} else {
target =
CellTraversalUtil.getPrevLeaf(
selectedCell, jetbrains.mps.openapi.editor.cells.CellConditions.SELECTABLE);
}
}
if (target == null || ReadOnlyUtil.isCellReadOnly(target)) return false;
/*
Was commented out (again) to let some of our unit-tests be green.
in particular - pressing BackSpace at this situation:
<code>
int a = 1;
--|a;
<code>
where "|" is a position of cursor;
if (ModelAccess.instance().runReadAction(new Computable<Boolean>() {
public Boolean compute() {
return jetbrains.mps.util.SNodeOperations.isAncestor(target.getSNode(), selectedCell.getSNode());
}
})) return false;
*/
return getEditorComponent().getActionHandler().executeAction(target, type);
}
return false;
}