private boolean processSideDeletes(CellActionType type) {
// TODO: review this logic - it was originally copied from EditorComponentKeyboardHandler
final EditorCell selectedCell = getEditorCell();
if (type == CellActionType.DELETE
&& selectedCell.isLastPositionInBigCell()
&& !selectedCell.isFirstPositionInBigCell()) {
final EditorCell target;
if (selectedCell.isLastPositionInBigCell()
&& selectedCell.getContainingBigCell().getNextSibling() != null) {
target = selectedCell.getContainingBigCell().getNextSibling();
} else if (selectedCell.getNextSibling() != null) {
target = selectedCell.getNextSibling();
} else {
target = selectedCell.getNextLeaf(CellConditions.SELECTABLE);
}
if (target == null
|| ModelAccess.instance()
.runReadAction(
new Computable<Boolean>() {
public Boolean compute() {
return target.getSNode().isAncestorOf(selectedCell.getSNode());
}
})) return false;
return target.executeAction(CellActionType.DELETE);
}
if (type == CellActionType.BACKSPACE
&& selectedCell.isFirstPositionInBigCell()
&& !selectedCell.isLastPositionInBigCell()) {
final EditorCell target;
if (selectedCell.isFirstPositionInBigCell()
&& selectedCell.getContainingBigCell().getPrevSibling() != null) {
target = selectedCell.getContainingBigCell().getPrevSibling();
} else if (selectedCell.getPrevSibling() != null) {
target = selectedCell.getPrevSibling();
} else {
target = selectedCell.getPrevLeaf(CellConditions.SELECTABLE);
}
if (target == null) return false;
/*
if (ModelAccess.instance().runReadAction(new Computable<Boolean>() {
public Boolean compute() {
return target.getSNode().isAncestorOf(selectedCell.getSNode());
}
})) return false;
*/
return target.executeAction(CellActionType.DELETE);
}
return false;
}
private boolean canPasteBefore(EditorCell selectedCell, List<SNode> pasteNodes) {
if (!selectedCell.isFirstPositionInBigCell()) return false;
SNode anchor = selectedCell.getSNode();
if (anchor.getParent() == null) return false;
NodeAndRole nodeAndRole =
new NodePaster(pasteNodes).getActualAnchorNode(anchor, anchor.getRoleInParent());
if (nodeAndRole == null) return false;
EditorCell targetCell = selectedCell.getEditor().findNodeCell(nodeAndRole.myNode);
return targetCell != null
&& targetCell.getFirstLeaf(CellConditions.SELECTABLE) == selectedCell
&& new NodePaster(pasteNodes).canPasteRelative(nodeAndRole.myNode);
}