Add projects directory to folder navigation widget

Change-Id: Ia925fa99ba0f11be860f214e7809731ddf990268
Reviewed-by: Tobias Hunger <tobias.hunger@qt.io>

src/plugins/coreplugin/documentmanager.cpp

@@ -1365,7 +1365,10 @@ FileName DocumentManager::projectsDirectory()
 
 void DocumentManager::setProjectsDirectory(const FileName &directory)
 {
-    d->m_projectsDirectory = directory;
+    if (d->m_projectsDirectory != directory) {
+        d->m_projectsDirectory = directory;
+        emit m_instance->projectsDirectoryChanged(d->m_projectsDirectory);
+    }
 }
 
 /*!

src/plugins/coreplugin/documentmanager.h

@@ -146,6 +146,7 @@ signals:
     void allDocumentsRenamed(const QString &from, const QString &to);
     /// emitted if one document changed its name e.g. due to save as
     void documentRenamed(Core::IDocument *document, const QString &from, const QString &to);
+    void projectsDirectoryChanged(const Utils::FileName &directory);
 
 protected:
     bool eventFilter(QObject *obj, QEvent *e);

src/plugins/projectexplorer/foldernavigationwidget.cpp

@@ -27,6 +27,7 @@
 #include "projectexplorer.h"
 
 #include <coreplugin/actionmanager/command.h>
+#include <coreplugin/documentmanager.h>
 #include <coreplugin/icore.h>
 #include <coreplugin/idocument.h>
 #include <coreplugin/fileiconprovider.h>
@@ -56,6 +57,8 @@
 const int PATH_ROLE = Qt::UserRole;
 const int ID_ROLE = Qt::UserRole + 1;
 
+const char PROJECTSDIRECTORYROOT_ID[] = "A.Projects";
+
 namespace ProjectExplorer {
 namespace Internal {
 
@@ -167,7 +170,7 @@ void FolderNavigationWidget::toggleAutoSynchronization()
     setAutoSynchronization(!m_autoSync);
 }
 
-void FolderNavigationWidget::addRootDirectory(
+void FolderNavigationWidget::insertRootDirectory(
     const FolderNavigationWidgetFactory::RootDirectory &directory)
 {
     // insert sorted
@@ -175,10 +178,13 @@ void FolderNavigationWidget::addRootDirectory(
     while (index < m_rootSelector->count()
            && m_rootSelector->itemData(index, ID_ROLE).toString() < directory.id)
         ++index;
-    m_rootSelector->insertItem(index, directory.displayName);
+    if (m_rootSelector->itemData(index, ID_ROLE).toString() != directory.id)
+        m_rootSelector->insertItem(index, directory.displayName);
     m_rootSelector->setItemData(index, qVariantFromValue(directory.path), PATH_ROLE);
     m_rootSelector->setItemData(index, directory.id, ID_ROLE);
     m_rootSelector->setItemData(index, directory.path.toUserOutput(), Qt::ToolTipRole);
+    if (m_rootSelector->currentIndex() == index)
+        setRootDirectory(directory.path);
     if (m_autoSync) // we might find a better root for current selection now
         setCurrentEditor(Core::EditorManager::currentEditor());
 }
@@ -351,22 +357,27 @@ FolderNavigationWidgetFactory::FolderNavigationWidgetFactory()
     setPriority(400);
     setId("File System");
     setActivationSequence(QKeySequence(Core::UseMacShortcuts ? tr("Meta+Y") : tr("Alt+Y")));
-    addRootDirectory(
+    insertRootDirectory(
         {QLatin1String("A.Computer"), FolderNavigationWidget::tr("Computer"), Utils::FileName()});
-    addRootDirectory({QLatin1String("A.Home"),
-                      FolderNavigationWidget::tr("Home"),
-                      Utils::FileName::fromString(QDir::homePath())});
+    insertRootDirectory({QLatin1String("A.Home"),
+                         FolderNavigationWidget::tr("Home"),
+                         Utils::FileName::fromString(QDir::homePath())});
+    updateProjectsDirectoryRoot();
+    connect(Core::DocumentManager::instance(),
+            &Core::DocumentManager::projectsDirectoryChanged,
+            this,
+            &FolderNavigationWidgetFactory::updateProjectsDirectoryRoot);
 }
 
 Core::NavigationView FolderNavigationWidgetFactory::createWidget()
 {
     auto fnw = new FolderNavigationWidget;
     for (const RootDirectory &root : m_rootDirectories)
-        fnw->addRootDirectory(root);
+        fnw->insertRootDirectory(root);
     connect(this,
             &FolderNavigationWidgetFactory::rootDirectoryAdded,
             fnw,
-            &FolderNavigationWidget::addRootDirectory);
+            &FolderNavigationWidget::insertRootDirectory);
     connect(this,
             &FolderNavigationWidgetFactory::rootDirectoryRemoved,
             fnw,
@@ -404,20 +415,34 @@ void FolderNavigationWidgetFactory::restoreSettings(QSettings *settings, int pos
     fnw->setAutoSynchronization(settings->value(baseKey +  QLatin1String(".SyncWithEditor"), true).toBool());
 }
 
-void FolderNavigationWidgetFactory::addRootDirectory(const RootDirectory &directory)
+void FolderNavigationWidgetFactory::insertRootDirectory(const RootDirectory &directory)
 {
-    m_rootDirectories.append(directory);
+    const int index = rootIndex(directory.id);
+    if (index < 0)
+        m_rootDirectories.append(directory);
     emit m_instance->rootDirectoryAdded(directory);
 }
 
 void FolderNavigationWidgetFactory::removeRootDirectory(const QString &id)
 {
-    const int index = Utils::indexOf(m_rootDirectories,
-                                     [id](const RootDirectory &entry) { return entry.id == id; });
+    const int index = rootIndex(id);
     QTC_ASSERT(index >= 0, return );
     m_rootDirectories.removeAt(index);
     emit m_instance->rootDirectoryRemoved(id);
 }
 
+int FolderNavigationWidgetFactory::rootIndex(const QString &id)
+{
+    return Utils::indexOf(m_rootDirectories,
+                          [id](const RootDirectory &entry) { return entry.id == id; });
+}
+
+void FolderNavigationWidgetFactory::updateProjectsDirectoryRoot()
+{
+    insertRootDirectory({QLatin1String(PROJECTSDIRECTORYROOT_ID),
+                         FolderNavigationWidget::tr("Projects"),
+                         Core::DocumentManager::projectsDirectory()});
+}
+
 } // namespace Internal
 } // namespace ProjectExplorer

src/plugins/projectexplorer/foldernavigationwidget.h

@@ -63,7 +63,7 @@ public:
     void saveSettings(QSettings *settings, int position, QWidget *widget) override;
     void restoreSettings(QSettings *settings, int position, QWidget *widget) override;
 
-    static void addRootDirectory(const RootDirectory &directory);
+    static void insertRootDirectory(const RootDirectory &directory);
     static void removeRootDirectory(const QString &id);
 
 signals:
@@ -71,6 +71,8 @@ signals:
     void rootDirectoryRemoved(const QString &id);
 
 private:
+    static int rootIndex(const QString &id);
+    void updateProjectsDirectoryRoot();
     static QVector<RootDirectory> m_rootDirectories;
 };
 
@@ -89,7 +91,7 @@ public:
     void setAutoSynchronization(bool sync);
     void toggleAutoSynchronization();
 
-    void addRootDirectory(const FolderNavigationWidgetFactory::RootDirectory &directory);
+    void insertRootDirectory(const FolderNavigationWidgetFactory::RootDirectory &directory);
     void removeRootDirectory(const QString &id);
 
 protected:

src/plugins/projectexplorer/session.cpp

@@ -386,7 +386,7 @@ void SessionManager::addProject(Project *pro)
             m_instance, [pro]() { m_instance->projectDisplayNameChanged(pro); });
 
     emit m_instance->projectAdded(pro);
-    FolderNavigationWidgetFactory::addRootDirectory(
+    FolderNavigationWidgetFactory::insertRootDirectory(
         {"P." + pro->displayName() + "." + pro->projectFilePath().toString(),
          pro->displayName(),
          pro->projectFilePath().parentDir()});