From 33e1afbe17cfa91c24adb775aba923f07fbeed01 Mon Sep 17 00:00:00 2001
From: Soeren Apel <soeren@apelpie.net>
Date: Sun, 4 Sep 2016 00:15:42 +0200
Subject: [PATCH] Update main window and dock widget titles as session name
 changes

---
 pv/mainwindow.cpp       | 52 +++++++++++++++++++++++++++++++++++++++--
 pv/mainwindow.hpp       |  6 +++++
 pv/session.cpp          |  4 +++-
 pv/toolbars/mainbar.cpp |  4 ++--
 4 files changed, 61 insertions(+), 5 deletions(-)

diff --git a/pv/mainwindow.cpp b/pv/mainwindow.cpp
index 19c7da4..787e1ac 100644
--- a/pv/mainwindow.cpp
+++ b/pv/mainwindow.cpp
@@ -62,6 +62,8 @@ class ViewItem;
 
 using toolbars::MainBar;
 
+const QString MainWindow::WindowTitle = tr("PulseView");
+
 MainWindow::MainWindow(DeviceManager &device_manager,
 	string open_file_name, string open_file_format,
 	QWidget *parent) :
@@ -232,6 +234,8 @@ shared_ptr<Session> MainWindow::add_session()
 
 	connect(session.get(), SIGNAL(add_view(const QString&, view::ViewType, Session*)),
 		this, SLOT(on_add_view(const QString&, view::ViewType, Session*)));
+	connect(session.get(), SIGNAL(name_changed()),
+		this, SLOT(on_session_name_changed()));
 
 	sessions_.push_back(session);
 
@@ -252,6 +256,11 @@ void MainWindow::remove_session(shared_ptr<Session> session)
 
 	sessions_.remove_if([&](shared_ptr<Session> s) {
 		return s == session; });
+
+	// Update the window title if there is no view left to
+	// generate focus change events
+	if (sessions_.empty())
+		on_session_name_changed();
 }
 
 void MainWindow::setup_ui()
@@ -282,8 +291,9 @@ void MainWindow::setup_ui()
 
 	setDockNestingEnabled(true);
 
-	// Set the title
-	setWindowTitle(tr("PulseView"));
+	connect(static_cast<QApplication *>(QCoreApplication::instance()),
+		SIGNAL(focusChanged(QWidget*, QWidget*)),
+		this, SLOT(on_focus_changed()));
 }
 
 void MainWindow::save_ui_settings()
@@ -373,11 +383,49 @@ void MainWindow::on_add_view(const QString &title, view::ViewType type,
 			add_view(title, type, *s);
 }
 
+void MainWindow::on_focus_changed()
+{
+	shared_ptr<view::View> view;
+	bool title_set = false;
+
+	view = get_active_view();
+
+	for (shared_ptr<Session> session : sessions_) {
+		if (!session->has_view(view))
+			continue;
+
+		setWindowTitle(session->name() + " - " + WindowTitle);
+		title_set = true;
+	}
+
+	if (!title_set)
+		setWindowTitle(WindowTitle);
+}
+
 void MainWindow::on_new_session()
 {
 	add_session();
 }
 
+void MainWindow::on_session_name_changed()
+{
+	// Update the corresponding dock widget's name(s)
+	Session *session = qobject_cast<Session*>(QObject::sender());
+	assert(session);
+
+	for (shared_ptr<view::View> view : session->views()) {
+		// Get the dock that contains the view
+		for (auto entry : view_docks_)
+			if (entry.second == view) {
+				entry.first->setObjectName(session->name());
+				entry.first->setWindowTitle(session->name());
+			}
+	}
+
+	// Refresh window title if the affected session has focus
+	on_focus_changed();
+}
+
 void MainWindow::on_new_view(Session *session)
 {
 	// We get a pointer and need a reference
diff --git a/pv/mainwindow.hpp b/pv/mainwindow.hpp
index 0d2db8c..3cd269f 100644
--- a/pv/mainwindow.hpp
+++ b/pv/mainwindow.hpp
@@ -57,6 +57,9 @@ class MainWindow : public QMainWindow
 {
 	Q_OBJECT
 
+private:
+	static const QString WindowTitle;
+
 public:
 	explicit MainWindow(DeviceManager &device_manager,
 		std::string open_file_name = std::string(),
@@ -96,7 +99,10 @@ private Q_SLOTS:
 	void on_add_view(const QString &title, view::ViewType type,
 		Session *session);
 
+	void on_focus_changed();
+
 	void on_new_session();
+	void on_session_name_changed();
 	void on_new_view(Session *session);
 	void on_view_close_clicked();
 
diff --git a/pv/session.cpp b/pv/session.cpp
index fc4a748..f6fb708 100644
--- a/pv/session.cpp
+++ b/pv/session.cpp
@@ -99,6 +99,7 @@ using Glib::Variant;
 namespace pv {
 Session::Session(DeviceManager &device_manager, QString name) :
 	device_manager_(device_manager),
+	default_name_(name),
 	name_(name),
 	capture_state_(Stopped),
 	cur_samplerate_(0)
@@ -300,10 +301,11 @@ void Session::restore_settings(QSettings &settings)
 			device = std::make_shared<devices::SessionFile>(device_manager_.context(),
 				filename.toStdString());
 			set_device(device);
-			set_name(filename);
 
 			// TODO Perform error handling
 			start_capture([](QString infoMessage) { (void)infoMessage; });
+
+			set_name(QFileInfo(filename).fileName());
 		}
 	}
 
diff --git a/pv/toolbars/mainbar.cpp b/pv/toolbars/mainbar.cpp
index a0f190f..483dd79 100644
--- a/pv/toolbars/mainbar.cpp
+++ b/pv/toolbars/mainbar.cpp
@@ -502,12 +502,12 @@ void MainBar::load_file(QString file_name,
 		return;
 	}
 
-	session_.set_name(QFileInfo(file_name).fileName());
-
 	update_device_list();
 
 	session_.start_capture([&, errorMessage](QString infoMessage) {
 		session_error(errorMessage, infoMessage); });
+
+	session_.set_name(QFileInfo(file_name).fileName());
 }
 
 void MainBar::update_sample_rate_selector()
-- 
2.30.2