Fixes: Enable switching of VCS according to currentProject

Task: 205821
RevBy: Eike
Details: Add a IVersionControl to git. Extend IF to able to return a name and add enabling options. Connect project explorer to enable the right VCS.

src/plugins/git/gitversioncontrol.h

@@ -0,0 +1,75 @@
+/***************************************************************************
+**
+** This file is part of Qt Creator
+**
+** Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies).
+**
+** Contact:  Qt Software Information (qt-info@nokia.com)
+**
+**
+** Non-Open Source Usage
+**
+** Licensees may use this file in accordance with the Qt Beta Version
+** License Agreement, Agreement version 2.2 provided with the Software or,
+** alternatively, in accordance with the terms contained in a written
+** agreement between you and Nokia.
+**
+** GNU General Public License Usage
+**
+** Alternatively, this file may be used under the terms of the GNU General
+** Public License versions 2.0 or 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the packaging
+** of this file.  Please review the following information to ensure GNU
+** General Public Licensing requirements will be met:
+**
+** http://www.fsf.org/licensing/licenses/info/GPLv2.html and
+** http://www.gnu.org/copyleft/gpl.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt GPL Exception
+** version 1.2, included in the file GPL_EXCEPTION.txt in this package.
+**
+***************************************************************************/
+
+#ifndef GITVERSIONCONTROL_H
+#define GITVERSIONCONTROL_H
+
+#include <coreplugin/iversioncontrol.h>
+
+namespace Git {
+namespace Internal {
+
+class GitClient;
+
+// Just a proxy for GitPlugin
+class GitVersionControl : public Core::IVersionControl
+{
+    Q_OBJECT
+public:
+    explicit GitVersionControl(GitClient *plugin);
+
+    virtual QString name() const;
+
+    virtual bool isEnabled() const;
+    virtual void setEnabled(bool enabled);
+
+    bool managesDirectory(const QString &directory) const;
+    virtual QString findTopLevelForDirectory(const QString &directory) const;
+
+    virtual bool supportsOperation(Operation operation) const;
+    virtual bool vcsOpen(const QString &fileName);
+    virtual bool vcsAdd(const QString &fileName);
+    virtual bool vcsDelete(const QString &filename);
+
+signals:
+    void enabledChanged(bool);
+
+private:
+    bool m_enabled;
+    GitClient *m_client;
+};
+
+} // Internal
+} // Git
+
+#endif // GITVERSIONCONTROL_H