boolean (XPathExpression expression, Set<XPathExpression> matchingExpressions, List<XmlTag> otherMatches, IntroduceVariableOptions dlg) { final XmlAttribute attribute = PsiTreeUtil.getContextOfType(expression, XmlAttribute.class, true); assert attribute != null; try { final String name = dlg.getName(); final XmlTag insertionPoint = XsltCodeInsightUtil.findVariableInsertionPoint( attribute.getParent(), XsltCodeInsightUtil.getUsageBlock(expression), name, dlg.isReplaceAll() ? otherMatches.toArray(XmlTag.EMPTY) : XmlTag.EMPTY); final XmlTag parentTag = insertionPoint.getParentTag(); assert parentTag != null : "Could not locate position to create variable at"; final XmlTag xmlTag = parentTag.createChildTag("variable", XsltSupport.XSLT_NS, null, false); xmlTag.setAttribute("name", name); xmlTag.setAttribute("select", expression.getText()); // TODO: revisit the formatting final PsiElement element = parentTag.addBefore(xmlTag, insertionPoint); final ASTNode node1 = parentTag.getNode(); assert node1 != null; final ASTNode node2 = element.getNode(); assert node2 != null; CodeStyleManager.getInstance(xmlTag.getManager().getProject()).reformatNewlyAddedElement(node1, node2); final XPathVariableReference var = XPathChangeUtil.createVariableReference(expression, name); expression.replace(var); if (dlg.isReplaceAll()) { for (XPathExpression expr : matchingExpressions) { expr.replace(XPathChangeUtil.createVariableReference(expr, name)); } return false; } else { return true; } } catch (IncorrectOperationException e) { Logger.getInstance(getClass().getName()).error(e); return false; } }