Git: Preserve current selection on log change refresh

Change-Id: Ic6be652a1d5cca87ae5effdcb3cb5df7b1b73c2c
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
Reviewed-by: hjk <hjk121@nokiamail.com>

src/plugins/git/logchangedialog.cpp

@@ -76,8 +76,6 @@ bool LogChangeWidget::init(const QString &repository, const QString &commit, boo
                     GitPlugin::instance()->gitClient()->msgNoCommits(includeRemote));
         return false;
     }
-    selectionModel()->select(m_model->index(0, 0),
-                             QItemSelectionModel::SelectCurrent | QItemSelectionModel::Rows);
     return true;
 }
 
@@ -117,6 +115,8 @@ void LogChangeWidget::emitDoubleClicked(const QModelIndex &index)
 
 bool LogChangeWidget::populateLog(const QString &repository, const QString &commit, bool includeRemote)
 {
+    const QString currentCommit = this->commit();
+    int selected = currentCommit.isEmpty() ? 0 : -1;
     if (const int rowCount = m_model->rowCount())
         m_model->removeRows(0, rowCount);
 
@@ -144,12 +144,15 @@ bool LogChangeWidget::populateLog(const QString &repository, const QString &comm
                 }
                 row.push_back(item);
             }
-            row[Sha1Column]->setText(line.left(colonPos));
+            const QString sha1 = line.left(colonPos);
+            row[Sha1Column]->setText(sha1);
             row[SubjectColumn]->setText(line.right(line.size() - colonPos - 1));
             m_model->appendRow(row);
+            if (selected == -1 && currentCommit == sha1)
+                selected = m_model->rowCount() - 1;
         }
     }
-    setCurrentIndex(m_model->index(0, 0));
+    setCurrentIndex(m_model->index(selected, 0));
     return true;
 }