kernel-shark: Add dialog for user-defined plugins to the Tools menu

The dialog allows the user to find and load the plugin's
library (.so file).

Link: http://lore.kernel.org/linux-trace-devel/20190313150717.21345-3-ykaradzhov@vmware.com

Reviewed-by: Slavomir Kaslev <kaslevs@vmware.com>
Signed-off-by: Yordan Karadzhov <ykaradzhov@vmware.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
diff --git a/kernel-shark/src/KsMainWindow.cpp b/kernel-shark/src/KsMainWindow.cpp
index 362b955..6428d4d 100644
--- a/kernel-shark/src/KsMainWindow.cpp
+++ b/kernel-shark/src/KsMainWindow.cpp
@@ -59,6 +59,7 @@
   _cpuSelectAction("CPUs", this),
   _taskSelectAction("Tasks", this),
   _pluginsAction("Plugins", this),
+  _addPluginsAction("Add plugins", this),
   _captureAction("Record", this),
   _colorAction(this),
   _colSlider(this),
@@ -233,6 +234,11 @@
 	connect(&_pluginsAction,	&QAction::triggered,
 		this,			&KsMainWindow::_pluginSelect);
 
+	_addPluginsAction.setStatusTip("Add plugins");
+
+	connect(&_addPluginsAction,	&QAction::triggered,
+		this,			&KsMainWindow::_pluginAdd);
+
 	_captureAction.setIcon(QIcon::fromTheme("media-record"));
 	_captureAction.setShortcut(tr("Ctrl+R"));
 	_captureAction.setStatusTip("Capture trace data");
@@ -336,6 +342,7 @@
 	/* Tools menu */
 	tools = menuBar()->addMenu("Tools");
 	tools->addAction(&_pluginsAction);
+	tools->addAction(&_addPluginsAction);
 	tools->addAction(&_captureAction);
 	tools->addSeparator();
 	tools->addAction(&_colorAction);
@@ -796,6 +803,21 @@
 	dialog->show();
 }
 
+void KsMainWindow::_pluginAdd()
+{
+	QStringList fileNames;
+
+	fileNames =
+		QFileDialog::getOpenFileNames(this, "Add KernelShark plugins",
+					      KS_DIR,
+					      "KernelShark Plugins (*.so);;");
+
+	if (fileNames.isEmpty())
+		return;
+
+	_plugins.addPlugins(fileNames);
+}
+
 void KsMainWindow::_record()
 {
 #ifndef DO_AS_ROOT
diff --git a/kernel-shark/src/KsMainWindow.hpp b/kernel-shark/src/KsMainWindow.hpp
index 969b603..1e6d619 100644
--- a/kernel-shark/src/KsMainWindow.hpp
+++ b/kernel-shark/src/KsMainWindow.hpp
@@ -132,6 +132,8 @@
 	// Tools menu.
 	QAction		_pluginsAction;
 
+	QAction		_addPluginsAction;
+
 	QAction		_captureAction;
 
 	QWidgetAction	_colorAction;
@@ -185,6 +187,8 @@
 
 	void _pluginSelect();
 
+	void _pluginAdd();
+
 	void _record();
 
 	void _setColorPhase(int);