[PATCH 5/5] Update main window title depending of current file state

[Lubomir I. Ivanov]

From: "Lubomir I. Ivanov" <neolit123 at gmail.com>

If a file has been opened from the command line or via the File
menu the main window title becomes "Subsurface: filename.ext".
Title also updates if 'File->Save As' is called. "Subsurface" only
is displayed when no active file is present or post 'File->New'
or 'File->Close'.

To make this work a new public method is added - MainWindow::setTitle()
and also an enum type MainWindowTitleFormat, which should allow
more complicated formatting, such as showing the selected dives
or the total number of dives (e.g. MWTF_FILENAME_N_DIVES).

Signed-off-by: Lubomir I. Ivanov <neolit123 at gmail.com>
---
 qt-gui.cpp           |  4 ++++
 qt-ui/mainwindow.cpp | 18 ++++++++++++++++++
 qt-ui/mainwindow.h   |  3 +++
 3 files changed, 25 insertions(+)

diff --git a/qt-gui.cpp b/qt-gui.cpp
index 2474d40..eab282d 100644
--- a/qt-gui.cpp
+++ b/qt-gui.cpp
@@ -75,6 +75,10 @@ void init_qt_ui(int *argcp, char ***argvp, char *errormessage)
 	MainWindow *window = new MainWindow();
 	window->showError(errormessage);
 	window->show();
+	if (existing_filename && existing_filename[0] != '\0')
+		window->setTitle(MWTF_FILENAME);
+	else
+		window->setTitle(MWTF_DEFAULT);
 }
 
 const char *getSetting(QSettings &s, QString name)
diff --git a/qt-ui/mainwindow.cpp b/qt-ui/mainwindow.cpp
index 6036b3c..22ce344 100644
--- a/qt-ui/mainwindow.cpp
+++ b/qt-ui/mainwindow.cpp
@@ -120,6 +120,7 @@ void MainWindow::on_actionOpen_triggered()
 	char *error = NULL;
 	parse_file(fileNamePtr.data(), &error);
 	set_filename(fileNamePtr.data(), TRUE);
+	setTitle(MWTF_FILENAME);
 
 	if (error != NULL) {
 		showError(error);
@@ -164,6 +165,7 @@ void MainWindow::on_actionClose_triggered()
 	ui->ProfileWidget->clear();
 	ui->ListWidget->reload(DiveTripModel::TREE);
 	ui->globe->reload();
+	setTitle(MWTF_DEFAULT);
 
 	clear_events();
 }
@@ -673,6 +675,7 @@ void MainWindow::file_save_as(void)
 	if (!filename.isNull() && !filename.isEmpty()) {
 		save_dives(filename.toUtf8().data());
 		set_filename(filename.toUtf8().data(), TRUE);
+		setTitle(MWTF_FILENAME);
 		mark_divelist_changed(FALSE);
 	}
 }
@@ -705,3 +708,18 @@ void MainWindow::showError(QString message)
 	ui->mainErrorMessage->setMessageType(KMessageWidget::Error);
 	ui->mainErrorMessage->animatedShow();
 }
+
+void MainWindow::setTitle(enum MainWindowTitleFormat format)
+{
+	switch (format) {
+	case MWTF_DEFAULT:
+		setWindowTitle("Subsurface");
+	break;
+	case MWTF_FILENAME:
+		QFile f(existing_filename);
+		QFileInfo fileInfo(f);
+		QString fileName(fileInfo.fileName());
+		setWindowTitle("Subsurface: " + fileName);
+	break;
+	}
+}
diff --git a/qt-ui/mainwindow.h b/qt-ui/mainwindow.h
index 8582595..bac7468 100644
--- a/qt-ui/mainwindow.h
+++ b/qt-ui/mainwindow.h
@@ -31,6 +31,8 @@ class MainTab;
 class ProfileGraphicsView;
 class QTextBrowser;
 
+enum MainWindowTitleFormat { MWTF_DEFAULT, MWTF_FILENAME };
+
 class MainWindow : public QMainWindow
 {
 Q_OBJECT
@@ -43,6 +45,7 @@ public:
 	DiveListView *dive_list();
 	GlobeGPS *globe();
 	void showError(QString message);
+	void setTitle(enum MainWindowTitleFormat format);
 
 private slots:
 
-- 
1.7.11.msysgit.0