Move InstallerCalculator into its own header

Make it public, so that it can be used outside (e.g. in tests)

Change-Id: I2a307dcd6f2eb017f9ac26de06d77deb0d668fbe
Reviewed-by: Jarek Kobus <jaroslaw.kobus@digia.com>

1 files changed, 98 insertions, 0 deletions

diff --git a/src/libs/installer/installercalculator.h b/src/libs/installer/installercalculator.h
new file mode 100644
index 000000000..1552f94cc
--- /dev/null
+++ b/src/libs/installer/installercalculator.h
@@ -0,0 +1,98 @@
+/**************************************************************************
+**
+** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the Qt Installer Framework.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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 Digia.  For licensing terms and
+** conditions see http://qt.digia.com/licensing.  For further information
+** use the contact form at http://qt.digia.com/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Digia gives you certain additional
+** rights.  These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 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 the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+**
+** $QT_END_LICENSE$
+**
+**************************************************************************/
+#ifndef INSTALLERCALCULATOR_H
+#define INSTALLERCALCULATOR_H
+
+#include "installer_global.h"
+
+#include <QHash>
+#include <QList>
+#include <QSet>
+#include <QString>
+
+namespace QInstaller {
+
+class Component;
+
+class INSTALLER_EXPORT InstallerCalculator
+{
+public:
+    InstallerCalculator(const QList<Component *> &allComponents);
+
+    enum InstallReasonType
+    {
+        Automatic, // "Component(s) added as automatic dependencies"
+        Dependent, // "Added as dependency for %1."
+        Resolved,  // "Component(s) that have resolved Dependencies"
+        Selected   // "Selected Component(s) without Dependencies"
+    };
+
+    InstallReasonType installReasonType(Component *component) const;
+    QString installReasonReferencedComponent(Component *component) const;
+    QString installReason(Component *component) const;
+    QList<Component*> orderedComponentsToInstall() const;
+    QString componentsToInstallError() const;
+
+    bool appendComponentsToInstall(const QList<Component*> &components);
+
+private:
+    void insertInstallReason(Component *component,
+                             InstallReasonType installReasonType,
+                             const QString &referencedComponentName = QString());
+    void realAppendToInstallComponents(Component *component);
+    bool appendComponentToInstall(Component *components);
+    QString recursionError(Component *component);
+
+    QList<Component*> m_allComponents;
+    QHash<Component*, QSet<Component*> > m_visitedComponents;
+    QSet<QString> m_toInstallComponentIds; //for faster lookups
+    QString m_componentsToInstallError;
+    //calculate installation order variables
+    QList<Component*> m_orderedComponentsToInstall;
+    //we can't use this reason hash as component id hash, because some reasons are ready before
+    //the component is added
+    QHash<QString, QPair<InstallReasonType, QString> > m_toInstallComponentIdReasonHash;
+};
+
+}
+
+
+#endif // INSTALLERCALCULATOR_H