panels: allow insert and overwrite from footageviewerpanel too

Makes FootageViewerPanel and ProjectPanel derive from a common base that
TimelinePanel searches for when looking for a source to insert/overwrite from.

app/panel/footageviewer/footageviewer.cpp

@@ -35,6 +35,11 @@ FootageViewerPanel::FootageViewerPanel(QWidget *parent) :
   Retranslate();
 }
 
+QList<Footage *> FootageViewerPanel::GetSelectedFootage()
+{
+  return {static_cast<FootageViewerWidget*>(GetTimeBasedWidget())->GetFootage()};
+}
+
 void FootageViewerPanel::SetFootage(Footage *f)
 {
   static_cast<FootageViewerWidget*>(GetTimeBasedWidget())->SetFootage(f);

app/panel/footageviewer/footageviewer.h

@@ -24,15 +24,18 @@
 #include <QOpenGLFunctions>
 
 #include "panel/viewer/viewerbase.h"
+#include "panel/project/footagemanagementpanel.h"
 
 /**
  * @brief Dockable wrapper around a ViewerWidget
  */
-class FootageViewerPanel : public ViewerPanelBase {
+class FootageViewerPanel : public ViewerPanelBase, public FootageManagementPanel {
   Q_OBJECT
 public:
   FootageViewerPanel(QWidget* parent);
 
+  virtual QList<Footage*> GetSelectedFootage() override;
+
   void SetFootage(Footage* f);
 
 protected:

app/panel/project/CMakeLists.txt

@@ -16,6 +16,7 @@
 
 set(OLIVE_SOURCES
   ${OLIVE_SOURCES}
+  panel/project/footagemanagementpanel.h
   panel/project/project.h
   panel/project/project.cpp
   PARENT_SCOPE

app/panel/project/footagemanagementpanel.h

@@ -0,0 +1,13 @@
+#ifndef FOOTAGEMANAGEMENTPANEL_H
+#define FOOTAGEMANAGEMENTPANEL_H
+
+#include <QList>
+
+#include "project/item/footage/footage.h"
+
+class FootageManagementPanel {
+public:
+  virtual QList<Footage*> GetSelectedFootage() = 0;
+};
+
+#endif // FOOTAGEMANAGEMENTPANEL_H

app/panel/project/project.h

@@ -21,6 +21,7 @@
 #ifndef PROJECT_PANEL_H
 #define PROJECT_PANEL_H
 
+#include "footagemanagementpanel.h"
 #include "project/project.h"
 #include "widget/panel/panel.h"
 #include "widget/projectexplorer/projectexplorer.h"
@@ -28,7 +29,7 @@
 /**
  * @brief A PanelWidget wrapper around a ProjectExplorer and a ProjectToolbar
  */
-class ProjectPanel : public PanelWidget
+class ProjectPanel : public PanelWidget, public FootageManagementPanel
 {
   Q_OBJECT
 public:
@@ -41,7 +42,7 @@ public:
 
   Folder* GetSelectedFolder();
 
-  QList<Footage*> GetSelectedFootage();
+  virtual QList<Footage*> GetSelectedFootage() override;
 
   ProjectViewModel* model();
 

app/panel/timeline/timeline.cpp

@@ -21,7 +21,7 @@
 #include "timeline.h"
 
 #include "panel/panelmanager.h"
-#include "panel/project/project.h"
+#include "panel/project/footagemanagementpanel.h"
 
 TimelinePanel::TimelinePanel(QWidget *parent) :
   TimeBasedPanel(parent)
@@ -94,7 +94,7 @@ void TimelinePanel::DecreaseTrackHeight()
 
 void TimelinePanel::Insert()
 {
-  ProjectPanel* project_panel = PanelManager::instance()->MostRecentlyFocused<ProjectPanel>();
+  FootageManagementPanel* project_panel = PanelManager::instance()->MostRecentlyFocused<FootageManagementPanel>();
 
   if (project_panel) {
     InsertFootageAtPlayhead(project_panel->GetSelectedFootage());
@@ -103,7 +103,7 @@ void TimelinePanel::Insert()
 
 void TimelinePanel::Overwrite()
 {
-  ProjectPanel* project_panel = PanelManager::instance()->MostRecentlyFocused<ProjectPanel>();
+  FootageManagementPanel* project_panel = PanelManager::instance()->MostRecentlyFocused<FootageManagementPanel>();
 
   if (project_panel) {
     OverwriteFootageAtPlayhead(project_panel->GetSelectedFootage());