kernel explorer: Make it single-instance tool

rpcs3/rpcs3qt/kernel_explorer.cpp

@@ -3,6 +3,7 @@
 #include <QVBoxLayout>
 #include <QPushButton>
 #include <QHeaderView>
+#include <QTreeWidget>
 #include <QTreeWidgetItem>
 
 #include "Emu/IdManager.h"
@@ -148,7 +149,9 @@ static QTreeWidgetItem* add_solid_node(QTreeWidget* tree, QTreeWidgetItem *paren
 	return node;
 }
 
-kernel_explorer::kernel_explorer(QWidget* parent) : QDialog(parent)
+kernel_explorer::kernel_explorer(QWidget* parent, std::function<void()> on_destroy)
+	: QDialog(parent)
+	, m_on_destroy(on_destroy)
 {
 	setWindowTitle(tr("Kernel Explorer"));
 	setObjectName("kernel_explorer");
@@ -167,11 +170,10 @@ kernel_explorer::kernel_explorer(QWidget* parent) : QDialog(parent)
 	m_tree->header()->close();
 
 	// Merge and display everything
-	vbox_panel->addSpacing(10);
+	vbox_panel->addSpacing(8);
 	vbox_panel->addLayout(hbox_buttons);
-	vbox_panel->addSpacing(10);
+	vbox_panel->addSpacing(8);
 	vbox_panel->addWidget(m_tree);
-	vbox_panel->addSpacing(10);
 	setLayout(vbox_panel);
 
 	// Events
@@ -180,6 +182,11 @@ kernel_explorer::kernel_explorer(QWidget* parent) : QDialog(parent)
 	Update();
 }
 
+kernel_explorer::~kernel_explorer()
+{
+	m_on_destroy();
+}
+
 void kernel_explorer::Update()
 {
 	const auto dct = g_fxo->get<lv2_memory_container>();

rpcs3/rpcs3qt/kernel_explorer.h

@@ -1,10 +1,11 @@
 #pragma once
 
 #include <QDialog>
-#include <QTreeWidget>
 
 #include "util/types.hpp"
 
+class QTreeWidget;
+
 class kernel_explorer : public QDialog
 {
 	Q_OBJECT
@@ -25,10 +26,12 @@ class kernel_explorer : public QDialog
 	};
 
 public:
-	kernel_explorer(QWidget* parent);
+	kernel_explorer(QWidget* parent, std::function<void()> on_destroy);
+	~kernel_explorer();
 
 private:
 	QTreeWidget* m_tree;
+	std::function<void()> m_on_destroy;
 
 private Q_SLOTS:
 	void Update();

rpcs3/rpcs3qt/main_window.cpp

@@ -1238,6 +1238,12 @@ void main_window::OnEmuStop()
 	{
 		m_game_list_frame->Refresh();
 	}
+
+	// Close kernel explorer if running
+	if (m_kernel_explorer)
+	{
+		m_kernel_explorer->close();
+	}
 }
 
 void main_window::OnEmuReady()
@@ -1759,8 +1765,15 @@ void main_window::CreateConnects()
 
 	connect(ui->toolskernel_explorerAct, &QAction::triggered, [this]
 	{
-		kernel_explorer* kernelExplorer = new kernel_explorer(this);
+		if (!m_kernel_explorer)
-		kernelExplorer->show();
+		{
+			m_kernel_explorer = new kernel_explorer(this, [this]()
+			{
+				m_kernel_explorer = nullptr;
+			});
+		}
+
+		m_kernel_explorer->show();
 	});
 
 	connect(ui->toolsmemory_viewerAct, &QAction::triggered, [this]

rpcs3/rpcs3qt/main_window.h

@@ -21,6 +21,7 @@ class game_list_frame;
 class gui_settings;
 class emu_settings;
 class persistent_settings;
+class kernel_explorer;
 
 struct gui_game_info;
 
@@ -164,6 +165,7 @@ private:
 	log_frame* m_log_frame = nullptr;
 	debugger_frame* m_debugger_frame = nullptr;
 	game_list_frame* m_game_list_frame = nullptr;
+	kernel_explorer* m_kernel_explorer = nullptr;
 	std::shared_ptr<gui_settings> m_gui_settings;
 	std::shared_ptr<emu_settings> m_emu_settings;
 	std::shared_ptr<persistent_settings> m_persistent_settings;