Python: move language client functionality out of utils

There will be more lsp specific functionality so moving it into its own
space is reasonable.

Change-Id: Ic87d437182d68673b53f662c804707138fef5b6c
Reviewed-by: Christian Stenger <christian.stenger@qt.io>

src/plugins/python/pythonlanguageclient.h

@@ -0,0 +1,69 @@
+/****************************************************************************
+**
+** Copyright (C) 2021 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.
+**
+****************************************************************************/
+
+#pragma once
+
+#include <utils/fileutils.h>
+
+namespace Core { class IDocument; }
+namespace LanguageClient {
+class Client;
+class StdIOSettings;
+}
+namespace TextEditor { class TextDocument; }
+
+namespace Python {
+namespace Internal {
+
+struct PythonLanguageServerState;
+
+class PyLSConfigureAssistant : public QObject
+{
+    Q_OBJECT
+public:
+    static PyLSConfigureAssistant *instance();
+
+    static const LanguageClient::StdIOSettings *languageServerForPython(
+        const Utils::FilePath &python);
+    static void documentOpened(Core::IDocument *document);
+    static void updateEditorInfoBars(const Utils::FilePath &python, LanguageClient::Client *client);
+
+    void openDocumentWithPython(const Utils::FilePath &python, TextEditor::TextDocument *document);
+
+private:
+    explicit PyLSConfigureAssistant(QObject *parent);
+
+    void handlePyLSState(const Utils::FilePath &python,
+                         const PythonLanguageServerState &state,
+                         TextEditor::TextDocument *document);
+    void resetEditorInfoBar(TextEditor::TextDocument *document);
+    void installPythonLanguageServer(const Utils::FilePath &python,
+                                     QPointer<TextEditor::TextDocument> document);
+
+    QHash<Utils::FilePath, QList<TextEditor::TextDocument *>> m_infoBarEntries;
+};
+
+} // namespace Internal
+} // namespace Python