ProjectNodes: Support different priorities for LocationInfo

Allow to have different priorities for LocationInfo in the FileNodes.

Use this to group the different LocationInfo items in the context
menu.

Change-Id: I13369d996841891ba7165684fe7bfb7687f9d523
Reviewed-by: hjk <hjk@qt.io>

src/plugins/projectexplorer/projectexplorer.cpp

@@ -3399,7 +3399,13 @@ void ProjectExplorerPluginPrivate::updateLocationSubMenus()
     if (!isVisible)
         return;
 
+    unsigned int lastPriority = 0;
     for (const FolderNode::LocationInfo &li : locations) {
+        if (li.priority != lastPriority) {
+            projectMenu->addSeparator();
+            folderMenu->addSeparator();
+            lastPriority = li.priority;
+        }
         const int line = li.line;
         const Utils::FilePath path = li.path;
         auto *action = new QAction(li.displayName, nullptr);

src/plugins/projectexplorer/projectnodes.cpp

@@ -673,6 +673,7 @@ void FolderNode::setIcon(const QIcon &icon)
 void FolderNode::setLocationInfo(const QList<FolderNode::LocationInfo> &info)
 {
     m_locations = info;
+    Utils::sort(m_locations, &LocationInfo::priority);
 }
 
 const QList<FolderNode::LocationInfo> FolderNode::locationInfo() const

src/plugins/projectexplorer/projectnodes.h

@@ -246,13 +246,22 @@ public:
     void setDisplayName(const QString &name);
     void setIcon(const QIcon &icon);
 
-    class LocationInfo {
+    class LocationInfo
+    {
     public:
-        LocationInfo(const QString &dn, const Utils::FilePath &p, const int l = -1) :
-            path(p), line(l), displayName(dn) { }
+        LocationInfo(const QString &dn,
+                     const Utils::FilePath &p,
+                     const int l = 0,
+                     const unsigned int prio = 0)
+            : path(p)
+            , line(l)
+            , priority(prio)
+            , displayName(dn)
+        {}
 
         Utils::FilePath path;
         int line = -1;
+        unsigned int priority = 0;
         QString displayName;
     };
     void setLocationInfo(const QList<LocationInfo> &info);