fixed buggy link function

panels/timeline.cpp

@@ -1201,25 +1201,18 @@ void Timeline::set_marker() {
 
 void Timeline::toggle_links() {
     LinkCommand* command = new LinkCommand();
+	command->s = sequence;
     for (int i=0;i<sequence->clips.size();i++) {
         Clip* c = sequence->clips.at(i);
         if (c != NULL && is_clip_selected(c, true)) {
-            command->clips.append(c);
+			command->clips.append(i);
             if (c->linked.size() > 0) {
                 command->link = false; // prioritize unlinking
 
-                for (int j=0;j<c->linked.size();j++) { // add links to the command
-                    bool found = false;
-                    Clip* link = sequence->clips.at(c->linked.at(j));
-                    for (int k=0;k<command->clips.size();k++) {
-                        if (command->clips.at(k) == link) {
-                            found = true;
-                            break;
-                        }
-                    }
-                    if (!found) {
-                        command->clips.append(link);
-                    }
+				for (int j=0;j<c->linked.size();j++) { // add links to the command
+					if (!command->clips.contains(c->linked.at(j))) {
+						command->clips.append(c->linked.at(j));
+					}
                 }
             }
         }

project/undo.cpp

@@ -1054,7 +1054,7 @@ LinkCommand::LinkCommand() : link(true), old_project_changed(mainWindow->isWindo
 
 void LinkCommand::undo() {
     for (int i=0;i<clips.size();i++) {
-        Clip* c = clips.at(i);
+		Clip* c = s->clips.at(clips.at(i));
         if (link) {
             c->linked.clear();
         } else {
@@ -1067,11 +1067,11 @@ void LinkCommand::undo() {
 void LinkCommand::redo() {
     old_links.clear();
     for (int i=0;i<clips.size();i++) {
-        Clip* c = clips.at(i);
+		Clip* c = s->clips.at(clips.at(i));
         if (link) {
             for (int j=0;j<clips.size();j++) {
                 if (i != j) {
-                    c->linked.append(j);
+					c->linked.append(clips.at(j));
                 }
             }
         } else {

project/undo.h

@@ -231,8 +231,9 @@ class LinkCommand : public QUndoCommand {
 public:
     LinkCommand();
     void undo();
-    void redo();
-    QVector<Clip*> clips;
+	void redo();
+	Sequence* s;
+	QVector<int> clips;
     bool link;
 private:
     QVector< QVector<int> > old_links;