ui: moved timeline selection signal queue to timeline

Probably a safer way to do this

app/widget/nodeparamview/nodeparamview.cpp

@@ -155,11 +155,6 @@ NodeParamView::NodeParamView(bool create_keyframe_view, QWidget *parent) :
           &QApplication::focusChanged,
           this,
           &NodeParamView::FocusChanged);
-
-  ctx_update_timer_ = new QTimer(this);
-  ctx_update_timer_->setInterval(1);
-  ctx_update_timer_->setSingleShot(true);
-  connect(ctx_update_timer_, &QTimer::timeout, this, &NodeParamView::UpdateContexts);
 }
 
 NodeParamView::~NodeParamView()
@@ -298,8 +293,7 @@ void NodeParamView::SetContexts(const QVector<Node *> &contexts)
 {
   // Setting contexts is expensive, so we queue it here to prevent multiple calls in a short timespan
   contexts_ = contexts;
-  ctx_update_timer_->stop();
-  ctx_update_timer_->start();
+  UpdateContexts();
 }
 
 void NodeParamView::resizeEvent(QResizeEvent *event)

app/widget/nodeparamview/nodeparamview.h

@@ -135,8 +135,6 @@ private:
   QVector<Node*> contexts_;
   QVector<Node*> current_contexts_;
 
-  QTimer *ctx_update_timer_;
-
 private slots:
   void UpdateGlobalScrollBar();
 

app/widget/timelinewidget/timelinewidget.cpp

@@ -185,6 +185,14 @@ TimelineWidget::TimelineWidget(QWidget *parent) :
 
   connect(Core::instance(), &Core::ToolChanged, this, &TimelineWidget::ToolChanged);
   connect(Core::instance(), &Core::AddableObjectChanged, this, &TimelineWidget::AddableObjectChanged);
+
+  signal_block_change_timer_ = new QTimer(this);
+  signal_block_change_timer_->setInterval(1);
+  signal_block_change_timer_->setSingleShot(true);
+  connect(signal_block_change_timer_, &QTimer::timeout, this, [this]{
+    signal_block_change_timer_->stop();
+    emit BlockSelectionChanged(selected_blocks_);
+  });
 }
 
 TimelineWidget::~TimelineWidget()
@@ -1163,7 +1171,8 @@ void TimelineWidget::SetScrollZoomsByDefaultOnAllViews(bool e)
 
 void TimelineWidget::SignalBlockSelectionChange()
 {
-  emit BlockSelectionChanged(selected_blocks_);
+  signal_block_change_timer_->stop();
+  signal_block_change_timer_->start();
 }
 
 void TimelineWidget::AddGhost(TimelineViewGhostItem *ghost)
@@ -1336,7 +1345,7 @@ void TimelineWidget::SignalSelectedBlocks(QVector<Block *> input, bool filter)
 
   selected_blocks_.append(input);
 
-  emit SignalBlockSelectionChange();
+  SignalBlockSelectionChange();
 }
 
 void TimelineWidget::SignalDeselectedBlocks(const QVector<Block *> &deselected_blocks)
@@ -1349,7 +1358,7 @@ void TimelineWidget::SignalDeselectedBlocks(const QVector<Block *> &deselected_b
     selected_blocks_.removeOne(b);
   }
 
-  emit SignalBlockSelectionChange();
+  SignalBlockSelectionChange();
 }
 
 void TimelineWidget::SignalDeselectedAllBlocks()

app/widget/timelinewidget/timelinewidget.h

@@ -322,6 +322,8 @@ private:
 
   MultiUndoCommand *subtitle_show_command_;
 
+  QTimer *signal_block_change_timer_;
+
   class SetSplitterSizesCommand : public UndoCommand
   {
   public: