Clang: Add clang query pane

We now support highlighting for an example text and for the query.

Change-Id: I88c415ff871cf3e4c2d4fc83d60a8555bf0ce08a
Reviewed-by: Tim Jenssen <tim.jenssen@qt.io>

src/plugins/clangrefactoring/clangquerytexteditorwidget.cpp

@@ -0,0 +1,47 @@
+/****************************************************************************
+**
+** Copyright (C) 2017 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of Qt Creator.
+**
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 as published by the Free Software
+** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-3.0.html.
+**
+****************************************************************************/
+
+#include "clangquerytexteditorwidget.h"
+
+#include "clangqueryhighlighter.h"
+
+#include <texteditor/textdocument.h>
+
+namespace ClangRefactoring {
+
+ClangQueryTextEditorWidget::ClangQueryTextEditorWidget(QWidget *parent)
+    : BaseClangQueryTextEditorWidget(parent)
+{
+    m_syntaxHighlighter = new ClangQueryHighlighter;
+
+    textDocument()->setSyntaxHighlighter(m_syntaxHighlighter);
+}
+
+ClangQueryHighlighter *ClangQueryTextEditorWidget::syntaxHighlighter() const
+{
+    return m_syntaxHighlighter;
+}
+
+} // namespace ClangRefactoring