Save / restore state in diff editor when reloading

Task-number: QTCREATORBUG-12650
Change-Id: I0bb25ed39f8a15dd5da798ebf0ce72898a2e3b3d
Reviewed-by: Eike Ziller <eike.ziller@digia.com>

1 files changed, 25 insertions, 0 deletions

diff --git a/src/plugins/diffeditor/unifieddiffeditorwidget.cpp b/src/plugins/diffeditor/unifieddiffeditorwidget.cpp
index 5858fe91ff..3226aa6499 100644
--- a/src/plugins/diffeditor/unifieddiffeditorwidget.cpp
+++ b/src/plugins/diffeditor/unifieddiffeditorwidget.cpp
@@ -134,6 +134,10 @@ void UnifiedDiffEditorWidget::setDiffEditorGuiController(
                    this, SLOT(clearAll(QString)));
         disconnect(m_controller, SIGNAL(diffFilesChanged(QList<FileData>,QString)),
                 this, SLOT(setDiff(QList<FileData>,QString)));
+        disconnect(m_controller, SIGNAL(saveStateRequested()),
+                this, SLOT(saveStateRequested()));
+        disconnect(m_controller, SIGNAL(restoreStateRequested()),
+                this, SLOT(restoreStateRequested()));
 
         disconnect(m_guiController, SIGNAL(currentDiffFileIndexChanged(int)),
                 this, SLOT(setCurrentDiffFileIndex(int)));
@@ -149,6 +153,10 @@ void UnifiedDiffEditorWidget::setDiffEditorGuiController(
                 this, SLOT(clearAll(QString)));
         connect(m_controller, SIGNAL(diffFilesChanged(QList<FileData>,QString)),
                 this, SLOT(setDiff(QList<FileData>,QString)));
+        connect(m_controller, SIGNAL(saveStateRequested()),
+                this, SLOT(saveStateRequested()));
+        connect(m_controller, SIGNAL(restoreStateRequested()),
+                this, SLOT(restoreStateRequested()));
 
         connect(m_guiController, SIGNAL(currentDiffFileIndexChanged(int)),
                 this, SLOT(setCurrentDiffFileIndex(int)));
@@ -158,6 +166,23 @@ void UnifiedDiffEditorWidget::setDiffEditorGuiController(
     }
 }
 
+void UnifiedDiffEditorWidget::saveStateRequested()
+{
+    if (!m_state.isNull())
+        return;
+
+    m_state = saveState();
+}
+
+void UnifiedDiffEditorWidget::restoreStateRequested()
+{
+    if (m_state.isNull())
+        return;
+
+    restoreState(m_state);
+    m_state.clear();
+}
+
 DiffEditorGuiController *UnifiedDiffEditorWidget::diffEditorGuiController() const
 {
     return m_guiController;