ProjectExplorer: Show VCS topic in tree

Topic is usually the current branch name

Change-Id: Id6ecc48744a5b3d9c7502b36b4895eb18d0ff0c6
Reviewed-by: Tobias Hunger <tobias.hunger@digia.com>

src/plugins/coreplugin/iversioncontrol.cpp

@@ -41,4 +41,9 @@ QString IVersionControl::vcsMakeWritableText() const
     return QString();
 }
 
+QString IVersionControl::vcsTopic(const QString &)
+{
+    return QString();
+}
+
 }

src/plugins/coreplugin/iversioncontrol.h

@@ -136,6 +136,11 @@ public:
      */
     virtual QString vcsGetRepositoryURL(const QString &director) = 0;
 
+    /*!
+     * Topic (e.g. name of the current branch)
+     */
+    virtual QString vcsTopic(const QString &directory);
+
     /*!
      * Create a snapshot of the current state and return an identifier or
      * an empty string in case of failure.

src/plugins/projectexplorer/projectmodels.cpp

@@ -258,7 +258,20 @@ QVariant FlatModel::data(const QModelIndex &index, int role) const
     if (Node *node = nodeForIndex(index)) {
         FolderNode *folderNode = qobject_cast<FolderNode*>(node);
         switch (role) {
-        case Qt::DisplayRole:
+        case Qt::DisplayRole: {
+            QString name = node->displayName();
+
+            if (node->parentFolderNode()
+                    && node->parentFolderNode()->nodeType() == SessionNodeType) {
+                const QString vcsTopic = node->vcsTopic();
+
+                if (!vcsTopic.isEmpty())
+                    name += " (" + vcsTopic + ")";
+            }
+
+            result = name;
+            break;
+        }
         case Qt::EditRole: {
             result = node->displayName();
             break;

src/plugins/projectexplorer/projectnodes.cpp

@@ -34,6 +34,9 @@
 
 #include <coreplugin/mimedatabase.h>
 #include <coreplugin/fileiconprovider.h>
+#include <coreplugin/icore.h>
+#include <coreplugin/iversioncontrol.h>
+#include <coreplugin/vcsmanager.h>
 #include <utils/qtcassert.h>
 
 #include <QFileInfo>
@@ -104,6 +107,11 @@ QString Node::displayName() const
     return QFileInfo(path()).fileName();
 }
 
+QString Node::vcsTopic() const
+{
+    return QString();
+}
+
 QString Node::tooltip() const
 {
     return QDir::toNativeSeparators(path());
@@ -269,6 +277,16 @@ ProjectNode::ProjectNode(const QString &projectFilePath)
     setDisplayName(QFileInfo(projectFilePath).fileName());
 }
 
+QString ProjectNode::vcsTopic() const {
+    const QString dir = QFileInfo(path()).absolutePath();
+
+    if (Core::IVersionControl *const vc =
+            Core::ICore::vcsManager()->findVersionControlForDirectory(dir))
+        return vc->vcsTopic(dir);
+
+    return QString();
+}
+
 QList<ProjectNode*> ProjectNode::subProjectNodes() const
 {
     return m_subProjectNodes;

src/plugins/projectexplorer/projectnodes.h

@@ -86,6 +86,7 @@ public:
     FolderNode *parentFolderNode() const; // parent folder or project
     QString path() const;                 // file system path
     virtual QString displayName() const;
+    virtual QString vcsTopic() const;
     virtual QString tooltip() const;
 
 protected:
@@ -183,6 +184,8 @@ public:
         HasSubProjectRunConfigurations
     };
 
+    QString vcsTopic() const;
+
     // all subFolders that are projects
     QList<ProjectNode*> subProjectNodes() const;