TreeModel: Re-order template arguments for tree levels

More natural and easier to extend to use parameter packs later.

Adjust users.

Change-Id: Ic167196cc969d18bb1615084397e884f769d1e85
Reviewed-by: Eike Ziller <eike.ziller@qt.io>

src/libs/utils/treemodel.h

@@ -241,9 +241,9 @@ protected:
 
 // A multi-level model with uniform types per level.
 // All items below second level have to have identitical types.
-template <class FirstLevelItem,
+template <class RootItem,
-          class SecondLevelItem = FirstLevelItem,
+          class FirstLevelItem,
-          class RootItem = TreeItem>
+          class SecondLevelItem = FirstLevelItem>
 class LeveledTreeModel : public TreeModel
 {
 public:

src/plugins/cmakeprojectmanager/cmakesettingspage.cpp

@@ -56,7 +56,7 @@ class CMakeToolTreeItem;
 // CMakeToolItemModel
 // --------------------------------------------------------------------------
 
-class CMakeToolItemModel : public LeveledTreeModel<TreeItem, CMakeToolTreeItem>
+class CMakeToolItemModel : public LeveledTreeModel<TreeItem, TreeItem, CMakeToolTreeItem>
 {
     Q_DECLARE_TR_FUNCTIONS(CMakeProjectManager::CMakeSettingsPage)
 

src/plugins/debugger/breakhandler.h

@@ -157,7 +157,7 @@ inline uint qHash(const Debugger::Internal::Breakpoint &b) { return b.hash(); }
 
 typedef QList<Breakpoint> Breakpoints;
 
-class BreakHandler : public Utils::LeveledTreeModel<BreakpointItem, LocationItem>
+class BreakHandler : public Utils::LeveledTreeModel<Utils::TreeItem, BreakpointItem, LocationItem>
 {
     Q_OBJECT
 

src/plugins/debugger/debuggeroptionspage.cpp

@@ -99,7 +99,7 @@ public:
 // DebuggerItemModel
 // --------------------------------------------------------------------------
 
-class DebuggerItemModel : public LeveledTreeModel<StaticTreeItem, DebuggerTreeItem>
+class DebuggerItemModel : public LeveledTreeModel<TreeItem, StaticTreeItem, DebuggerTreeItem>
 {
     Q_DECLARE_TR_FUNCTIONS(Debugger::DebuggerOptionsPage)
 

src/plugins/debugger/threadshandler.h

@@ -41,7 +41,7 @@ namespace Internal {
 class GdbMi;
 class ThreadItem;
 
-class ThreadsHandler : public Utils::LeveledTreeModel<ThreadItem>
+class ThreadsHandler : public Utils::LeveledTreeModel<Utils::TreeItem, ThreadItem>
 {
     Q_OBJECT
 

src/plugins/projectexplorer/kitmodel.cpp

@@ -103,7 +103,7 @@ public:
 // --------------------------------------------------------------------------
 
 KitModel::KitModel(QBoxLayout *parentLayout, QObject *parent)
-    : LeveledTreeModel<TreeItem, KitNode>(parent),
+    : LeveledTreeModel<TreeItem, TreeItem, KitNode>(parent),
       m_parentLayout(parentLayout)
 {
     setHeader(QStringList(tr("Name")));

src/plugins/projectexplorer/kitmodel.h

@@ -48,7 +48,7 @@ class KitNode;
 // KitModel:
 // --------------------------------------------------------------------------
 
-class KitModel : public Utils::LeveledTreeModel<Utils::TreeItem, KitNode>
+class KitModel : public Utils::LeveledTreeModel<Utils::TreeItem, Utils::TreeItem, KitNode>
 {
     Q_OBJECT