Implement context menu on 'sources' box

obs/window-basic-main.hpp

@@ -19,6 +19,7 @@
 
 #include <QNetworkAccessManager>
 #include <QBuffer>
+#include <QAction>
 #include <obs.hpp>
 #include <unordered_map>
 #include <vector>
@@ -60,6 +61,8 @@ private:
 
 	QNetworkAccessManager networkManager;
 
+	QPointer<QAction> removeItemAction;
+
 	QBuffer       logUploadPostData;
 	QNetworkReply *logUploadReply = nullptr;
 	QByteArray    logUploadReturnData;
@@ -145,6 +148,8 @@ private slots:
 	void ActivateAudioSource(OBSSource source);
 	void DeactivateAudioSource(OBSSource source);
 
+	void RemoveSelectedItem();
+
 private:
 	/* OBS Callbacks */
 	static void SceneItemAdded(void *data, calldata_t params);
@@ -244,6 +249,9 @@ private slots:
 
 	void AddSourceFromAction();
 
+	void EditSceneName();
+	void EditSceneItemName();
+
 	void SceneNameEdited(QWidget *editor,
 			QAbstractItemDelegate::EndEditHint endHint);
 	void SceneItemNameEdited(QWidget *editor,