Add install reason why component is uninstalled

In details view uninstallable and installable components are listed. For
installable components a reason is shown why the component is installed.
Added similar kind of message for uninstallable components as well.

Task-number: QTIFW-2581
Change-Id: Idbf31200793a6c89a4ed4a6fc115f49889b5f9b5
Reviewed-by: Arttu Tarkiainen <arttu.tarkiainen@qt.io>

1 files changed, 16 insertions, 0 deletions

diff --git a/src/libs/installer/uninstallercalculator.h b/src/libs/installer/uninstallercalculator.h
index fb7035d4e..c20616e93 100644
--- a/src/libs/installer/uninstallercalculator.h
+++ b/src/libs/installer/uninstallercalculator.h
@@ -43,11 +43,26 @@ class PackageManagerCore;
 class INSTALLER_EXPORT UninstallerCalculator
 {
 public:
+    enum UninstallReasonType
+    {
+        Selected,         // "Deselected Component(s)"
+        Replaced,         // "Component(s) replaced by other components"
+        VirtualDependent, // "No dependencies to virtual component"
+        Dependent,        // "Removed as dependency component is removed"
+        AutoDependent     // "Removed as autodependency component is removed"
+    };
+
     UninstallerCalculator(const QList<Component *> &installedComponents, PackageManagerCore *core);
 
     QSet<Component*> componentsToUninstall() const;
 
     void appendComponentsToUninstall(const QList<Component*> &components);
+    void insertUninstallReason(Component *component,
+                               UninstallReasonType installReasonType,
+                               const QString &referencedComponentName = QString());
+    QString uninstallReason(Component *component) const;
+    UninstallerCalculator::UninstallReasonType uninstallReasonType(Component *c) const;
+    QString uninstallReasonReferencedComponent(Component *component) const;
 
 private:
 
@@ -57,6 +72,7 @@ private:
     QList<Component *> m_installedComponents;
     QSet<Component *> m_componentsToUninstall;
     PackageManagerCore *m_core;
+    QHash<QString, QPair<UninstallReasonType, QString> > m_toUninstallComponentIdReasonHash;
 };
 
 }