From 54033f4bad3cddeb9f407bece603f3640e91ccf2 Mon Sep 17 00:00:00 2001
From: Till Theato <root@ttill.de>
Date: Thu, 3 Jun 2010 21:35:39 +0000
Subject: [PATCH] Do not allow deleting last track (also fixes a related crash)

svn path=/trunk/kdenlive/; revision=4500
---
 src/customtrackview.cpp | 38 ++++++++++++++++++++------------------
 src/customtrackview.h   |  6 +++++-
 2 files changed, 25 insertions(+), 19 deletions(-)

diff --git a/src/customtrackview.cpp b/src/customtrackview.cpp
index 3b73087a..2ff23eb3 100644
--- a/src/customtrackview.cpp
+++ b/src/customtrackview.cpp
@@ -5326,25 +5326,27 @@ void CustomTrackView::slotInsertTrack(int ix)
     }
 }
 
-void CustomTrackView::slotDeleteTrack(int ix)
-{
-    TrackDialog d(m_document, parentWidget());
-    d.label->setText(i18n("Delete track"));
-    d.before_select->setHidden(true);
-    d.track_nb->setMaximum(m_document->tracksCount() - 1);
-    d.track_nb->setValue(ix);
-    d.slotUpdateName(ix);
-    d.setWindowTitle(i18n("Delete Track"));
-    d.video_track->setHidden(true);
-    d.audio_track->setHidden(true);
-    if (d.exec() == QDialog::Accepted) {
-        ix = d.track_nb->value();
-        TrackInfo info = m_document->trackInfoAt(m_document->tracksCount() - ix - 1);
-        deleteTimelineTrack(ix, info);
-        setDocumentModified();
-        /*AddTrackCommand* command = new AddTrackCommand(this, ix, info, false);
-        m_commandStack->push(command);*/
+void CustomTrackView::slotDeleteTrack(int ix, bool dialog)
+{
+    if (m_document->tracksCount() < 2) return;
+    if (dialog) {
+        TrackDialog d(m_document, parentWidget());
+        d.label->setText(i18n("Delete track"));
+        d.before_select->setHidden(true);
+        d.track_nb->setMaximum(m_document->tracksCount() - 1);
+        d.track_nb->setValue(ix);
+        d.slotUpdateName(ix);
+        d.setWindowTitle(i18n("Delete Track"));
+        d.video_track->setHidden(true);
+        d.audio_track->setHidden(true);
+        if (d.exec() == QDialog::Accepted)
+            ix = d.track_nb->value();
+        else
+            return;
     }
+    TrackInfo info = m_document->trackInfoAt(m_document->tracksCount() - ix - 1);
+    deleteTimelineTrack(ix, info);
+    setDocumentModified();
 }
 
 void CustomTrackView::slotConfigTracks(int ix)
diff --git a/src/customtrackview.h b/src/customtrackview.h
index 54b27988..f1cc6448 100644
--- a/src/customtrackview.h
+++ b/src/customtrackview.h
@@ -206,7 +206,11 @@ public slots:
     void slotUpdateAllThumbs();
     void slotCheckPositionScrolling();
     void slotInsertTrack(int ix);
-    void slotDeleteTrack(int ix);
+
+    /** @brief Shows a dialog for selecting a track to delete.
+    * @param ix Number of the track, which should be pre-selected in the dialog
+    * @param dialog Show dialog or directly delete track @param ix? */
+    void slotDeleteTrack(int ix, bool dialog = true);
     /** @brief Shows the configure tracks dialog. */
     void slotConfigTracks(int ix);
     void clipNameChanged(const QString id, const QString name);
-- 
2.39.2