respect field column span and disable scrolling on combo fields

ui/comboboxex.cpp

@@ -20,63 +20,23 @@
 
 #include "comboboxex.h"
 
-#include "project/undo.h"
-#include "panels/project.h"
-#include "mainwindow.h"
-
-#include <QUndoCommand>
 #include <QWheelEvent>
 
-
-class ComboBoxExCommand : public QUndoCommand {
-public:
-    ComboBoxExCommand(ComboBoxEx* obj, int old_index, int new_index) :
-        combobox(obj), old_val(old_index), new_val(new_index), done(true), old_project_changed(olive::MainWindow->isWindowModified()) {}
-    void undo() {
-        combobox->setCurrentIndex(old_val);
-        done = false;
-        olive::MainWindow->setWindowModified(old_project_changed);
-    }
-    void redo() {
-        if (!done) {
-            combobox->setCurrentIndex(new_val);
-        }
-        olive::MainWindow->setWindowModified(true);
-    }
-private:
-    ComboBoxEx* combobox;
-    int old_val;
-    int new_val;
-    bool done;
-	bool old_project_changed;
-};
-
-ComboBoxEx::ComboBoxEx(QWidget *parent) : QComboBox(parent), index(0) {
-    connect(this, SIGNAL(activated(int)), this, SLOT(index_changed(int)));
+ComboBoxEx::ComboBoxEx(QWidget *parent) :
+  QComboBox(parent)
+{
 }
 
-void ComboBoxEx::setCurrentIndexEx(int i) {
-	index = i;
-	setCurrentIndex(i);
+void ComboBoxEx::setScrollingEnabled(bool b)
+{
+  scrolling_enabled_ = b;
 }
 
-void ComboBoxEx::setCurrentTextEx(const QString &text) {
-	setCurrentText(text);
-	index = currentIndex();
-}
-
-int ComboBoxEx::getPreviousIndex() {
-	return previousIndex;
-}
-
-void ComboBoxEx::index_changed(int i) {
-	if (index != i) {
-		previousIndex = index;
-//		undo_stack.push(new ComboBoxExCommand(this, index, i));
-		index = i;
-	}
-}
-
-void ComboBoxEx::wheelEvent(QWheelEvent* e) {
+void ComboBoxEx::wheelEvent(QWheelEvent *e)
+{
+  if (scrolling_enabled_) {
+    QComboBox::wheelEvent(e);
+  } else {
     e->ignore();
+  }
 }