Sessions: introduce a sessionDateTime

This can show the last modified time of a session and
will be used in a next commit to make it more clear
when session was saved.

Change-Id: I9f73f62652efc9287563f833f25c49f79c39d936
Task-number: QTCREATORBUG-15790
Reviewed-by: Eike Ziller <eike.ziller@qt.io>

src/plugins/projectexplorer/session.cpp

@@ -99,6 +99,7 @@ public:
     bool m_casadeSetActive = false;
 
     mutable QStringList m_sessions;
+    mutable QHash<QString, QDateTime> m_sessionDateTimes;
 
     mutable QHash<Project *, QStringList> m_projectFileCache;
 
@@ -466,7 +467,9 @@ bool SessionManager::save()
     data.insert(QLatin1String("valueKeys"), keys);
 
     bool result = d->m_writer->save(data, ICore::mainWindow());
-    if (!result) {
+    if (result) {
+        d->m_sessionDateTimes.insert(activeSession(), QDateTime::currentDateTime());
+    } else {
         QMessageBox::warning(ICore::dialogParent(), tr("Error while saving session"),
             tr("Could not save session to file %1").arg(d->m_writer->fileName().toUserOutput()));
     }
@@ -750,14 +753,21 @@ QStringList SessionManager::sessions()
         QDir sessionDir(ICore::userResourcePath());
         QList<QFileInfo> sessionFiles = sessionDir.entryInfoList(QStringList() << QLatin1String("*.qws"), QDir::NoFilter, QDir::Time);
         foreach (const QFileInfo &fileInfo, sessionFiles) {
-            if (fileInfo.completeBaseName() != QLatin1String("default"))
-                d->m_sessions << fileInfo.completeBaseName();
+            const QString &name = fileInfo.completeBaseName();
+            d->m_sessionDateTimes.insert(name, fileInfo.lastModified());
+            if (name != QLatin1String("default"))
+                d->m_sessions << name;
         }
         d->m_sessions.prepend(QLatin1String("default"));
     }
     return d->m_sessions;
 }
 
+QDateTime SessionManager::sessionDateTime(const QString &session)
+{
+    return d->m_sessionDateTimes.value(session);
+}
+
 FileName SessionManager::sessionNameToFileName(const QString &session)
 {
     return FileName::fromString(ICore::userResourcePath() + QLatin1Char('/') + session + QLatin1String(".qws"));
@@ -820,6 +830,7 @@ bool SessionManager::cloneSession(const QString &original, const QString &clone)
     // If the file does not exist, we can still clone
     if (!fi.exists() || fi.copy(sessionNameToFileName(clone).toString())) {
         d->m_sessions.insert(1, clone);
+        d->m_sessionDateTimes.insert(clone, QFileInfo(sessionNameToFileName(clone).toString()).lastModified());
         return true;
     }
     return false;

src/plugins/projectexplorer/session.h

@@ -33,6 +33,7 @@
 
 #include <QString>
 #include <QStringList>
+#include <QDateTime>
 
 namespace Core { class IEditor; }
 
@@ -61,6 +62,7 @@ public:
     static QString activeSession();
     static QString lastSession();
     static QStringList sessions();
+    static QDateTime sessionDateTime(const QString &session);
 
     static bool createSession(const QString &session);
 

src/plugins/projectexplorer/sessionmodel.cpp

@@ -39,7 +39,7 @@ namespace ProjectExplorer {
 namespace Internal {
 
 SessionModel::SessionModel(QObject *parent)
-    : QAbstractListModel(parent)
+    : QAbstractTableModel(parent)
 {
     connect(SessionManager::instance(), &SessionManager::sessionLoaded,
             this, &SessionModel::resetSessions);
@@ -55,6 +55,36 @@ QString SessionModel::sessionAt(int row)
     return SessionManager::sessions().value(row, QString());
 }
 
+QVariant SessionModel::headerData(int section, Qt::Orientation orientation, int role) const
+{
+    QVariant result;
+    if (orientation == Qt::Horizontal) {
+        switch (role) {
+        case Qt::DisplayRole:
+            switch (section) {
+            case 0: result = tr("Session");
+                break;
+            case 1: result = tr("Last Modified");
+                break;
+            } // switch (section)
+            break;
+        } // switch (role) {
+    }
+    return result;
+}
+
+int SessionModel::columnCount(const QModelIndex &) const
+{
+    static int sectionCount = 0;
+    if (sectionCount == 0) {
+        // headers sections defining possible columns
+        while (!headerData(sectionCount, Qt::Horizontal, Qt::DisplayRole).isNull())
+            sectionCount++;
+    }
+
+    return sectionCount;
+}
+
 int SessionModel::rowCount(const QModelIndex &) const
 {
     return SessionManager::sessions().count();
@@ -85,6 +115,8 @@ QVariant SessionModel::data(const QModelIndex &index, int role) const
             switch (index.column()) {
             case 0: result = sessionName;
                 break;
+            case 1: result = SessionManager::sessionDateTime(sessionName);
+                break;
             } // switch (section)
             break;
         case DefaultSessionRole:
@@ -118,7 +150,7 @@ QHash<int, QByteArray> SessionModel::roleNames() const
         {ProjectsPathRole, "projectsPath"},
         {ProjectsDisplayRole, "projectsName"}
     };
-    return QAbstractListModel::roleNames().unite(extraRoles);
+    return QAbstractTableModel::roleNames().unite(extraRoles);
 }
 
 bool SessionModel::isDefaultVirgin() const
@@ -186,5 +218,6 @@ void SessionModel::runNewSessionDialog(const QString &suggestedName, std::functi
             switchToSession(newSession);
     }
 }
+
 } // namespace Internal
 } // namespace ProjectExplorer

src/plugins/projectexplorer/sessionmodel.h

@@ -25,14 +25,14 @@
 
 #pragma once
 
-#include <QAbstractListModel>
+#include <QAbstractTableModel>
 
 #include <functional>
 
 namespace ProjectExplorer {
 namespace Internal {
 
-class SessionModel : public QAbstractListModel
+class SessionModel : public QAbstractTableModel
 {
     Q_OBJECT
 
@@ -45,6 +45,9 @@ public:
     QString sessionAt(int row);
 
     int rowCount(const QModelIndex &parent = QModelIndex()) const override;
+    int columnCount(const QModelIndex &parent = QModelIndex()) const override;
+
+    QVariant headerData(int section, Qt::Orientation orientation, int role) const override;
     QVariant data(const QModelIndex &index, int role) const override;
     QHash<int, QByteArray> roleNames() const override;
 

src/plugins/projectexplorer/sessionview.cpp

@@ -63,9 +63,10 @@ SessionView::SessionView(QWidget *parent)
 
     setModel(&m_sessionModel);
 
-    QItemSelection firstRow(m_sessionModel.index(0,0), m_sessionModel.index(0, 0));
-    selectionModel()->select(firstRow,
-        QItemSelectionModel::QItemSelectionModel::SelectCurrent);
+    QItemSelection firstRow(m_sessionModel.index(0,0), m_sessionModel.index(
+        0, m_sessionModel.columnCount() - 1));
+    selectionModel()->select(firstRow, QItemSelectionModel::QItemSelectionModel::
+        SelectCurrent);
 
     connect(this, &QTreeView::activated, [this](const QModelIndex &index){
         emit activated(m_sessionModel.sessionAt(index.row()));