Better title for ViewSource

The title is changed to "LaTeX (pdflatex) Preview", etc. depending on the
format. The actual default format is computed.

The menu name "Source Pane" is replaced by "Code Preview Pane" to better reflect
its purpose.

(cherry-picked from ca58674267)

lib/ui/stdmenus.inc

@@ -336,7 +336,7 @@ Menuset
 		Item "Fold Math Macro|d" "math-macro-fold"
 		Separator
 		Item "Outline Pane|u" "dialog-toggle toc"
-		Item "Source Pane|S" "dialog-toggle view-source"
+		Item "Code Preview Pane|P" "dialog-toggle view-source"
 		Item "Messages Pane|g" "dialog-toggle progress"
 		Submenu "Toolbars|b" "toolbars"
 		Separator

src/Format.cpp

@@ -839,6 +839,7 @@ FlavorTranslator initFlavorTranslator()
 	f.addPair(OutputParams::XML, "docbook-xml");
 	f.addPair(OutputParams::HTML, "xhtml");
 	f.addPair(OutputParams::TEXT, "text");
+	f.addPair(OutputParams::LYX, "lyx");
 	return f;
 }
 

src/frontends/qt4/GuiViewSource.cpp

@@ -148,7 +148,12 @@ void ViewSourceWidget::contentsChanged()
 void ViewSourceWidget::setViewFormat(int const index)
 {
 	outputFormatCO->setCurrentIndex(index);
-	view_format_ = outputFormatCO->itemData(index).toString();
+	string format = fromqstr(outputFormatCO->itemData(index).toString());
+	if (view_format_ != format) {
+		view_format_ = format;
+		// emit signal
+		formatChanged();
+	}
 }
 
 
@@ -184,8 +189,6 @@ void ViewSourceWidget::realUpdateView()
 	// we will try to preserve this
 	int const h_scroll = viewSourceTV->horizontalScrollBar()->value();
 
-	string const format = fromqstr(view_format_);
-
 	Buffer::OutputWhat output = Buffer::CurrentParagraph;
 	if (contentsCO->currentIndex() == 1)
 		output = Buffer::FullSource;
@@ -195,7 +198,8 @@ void ViewSourceWidget::realUpdateView()
 		output = Buffer::OnlyBody;
 
 	docstring content;
-	getContent(bv_, output, content, format, masterPerspectiveCB->isChecked());
+	getContent(bv_, output, content, view_format_,
+	           masterPerspectiveCB->isChecked());
 	QString old = document_->toPlainText();
 	QString qcontent = toqstr(content);
 #ifdef DEVEL_VERSION
@@ -305,6 +309,16 @@ void ViewSourceWidget::realUpdateView()
 }
 
 
+docstring ViewSourceWidget::currentFormatName() const
+{
+	// Compute the actual format used
+	string const format = !bv_ ? ""
+		: flavor2format(bv_->buffer().params().getOutputFlavor(view_format_));
+	Format const * f = formats.getFormat(format.empty() ? view_format_ : format);
+	return from_utf8(f ? f->prettyname() : view_format_);
+}
+
+
 // only used in DEVEL_MODE for debugging
 // need a proper LFUN if we want to implement it in release mode
 void ViewSourceWidget::gotoCursor()
@@ -340,9 +354,8 @@ void ViewSourceWidget::updateDefaultFormat()
 		} 
 
 		QString const pretty = qt_(fmt->prettyname());
-		QString const qformat = toqstr(format);
-		outputFormatCO->addItem(pretty, QVariant(qformat));
-		if (qformat == view_format_)
+		outputFormatCO->addItem(pretty, QVariant(toqstr(format)));
+		if (format == view_format_)
 		   index = outputFormatCO->count() -1;
 	}
 	setViewFormat(index);
@@ -366,7 +379,7 @@ void ViewSourceWidget::resizeEvent (QResizeEvent * event)
 void ViewSourceWidget::saveSession(QString const & session_key) const
 {
 	QSettings settings;
-	settings.setValue(session_key + "/output", view_format_);
+	settings.setValue(session_key + "/output", toqstr(view_format_));
 	settings.setValue(session_key + "/contents", contentsCO->currentIndex());
 	settings.setValue(session_key + "/autoupdate", autoUpdateCB->isChecked());
 	settings.setValue(session_key + "/masterview",
@@ -377,7 +390,8 @@ void ViewSourceWidget::saveSession(QString const & session_key) const
 void ViewSourceWidget::restoreSession(QString const & session_key)
 {
 	QSettings settings;
-    view_format_ = settings.value(session_key + "/output", 0).toString();
+	view_format_ = fromqstr(settings.value(session_key + "/output", 0)
+	                        .toString());
 	contentsCO->setCurrentIndex(settings
 								.value(session_key + "/contents", 0)
 								.toInt());
@@ -395,10 +409,11 @@ void ViewSourceWidget::restoreSession(QString const & session_key)
 
 GuiViewSource::GuiViewSource(GuiView & parent,
 		Qt::DockWidgetArea area, Qt::WindowFlags flags)
-	: DockView(parent, "view-source", qt_("LaTeX Source"), area, flags)
+	: DockView(parent, "view-source", qt_("Code Preview"), area, flags)
 {
 	widget_ = new ViewSourceWidget;
 	setWidget(widget_);
+	connect(widget_, SIGNAL(formatChanged()), this, SLOT(updateTitle()));
 }
 
 
@@ -415,6 +430,7 @@ void GuiViewSource::updateView()
 		widget_->updateView();
 	}
 	widget_->masterPerspectiveCB->setEnabled(buffer().parent());
+	updateTitle();
 }
 
 
@@ -430,24 +446,19 @@ void GuiViewSource::enableView(bool enable)
 
 bool GuiViewSource::initialiseParams(string const & /*source*/)
 {
-	setWindowTitle(title());
+	updateTitle();
 	return true;
 }
 
 
-QString GuiViewSource::title() const
+void GuiViewSource::updateTitle()
 {
-	switch (docType()) {
-		case LATEX:
-			//FIXME: this is shown for LyXHTML source, LyX source, etc.
-			return qt_("LaTeX Source");
-		case DOCBOOK:
-			return qt_("DocBook Source");
-		case LITERATE:
-			return qt_("Literate Source");
-	}
-	LATTEST(false);
-	return QString();
+	docstring const format = widget_->currentFormatName();
+	QString const title = format.empty() ? qt_("Code Preview")
+		: qt_("%1[[preview format name]] Preview")
+		  .arg(toqstr(translateIfPossible(format)));
+	setTitle(title);
+	setWindowTitle(title);
 }
 
 

src/frontends/qt4/GuiViewSource.h

@@ -64,6 +64,11 @@ public Q_SLOTS:
 	void contentsChanged();
 	///
 	void gotoCursor();
+	/// Name of the current format. Empty if none.
+	docstring currentFormatName() const;
+
+Q_SIGNALS:
+	void formatChanged() const;
 
 private Q_SLOTS:
 	/// update content
@@ -80,7 +85,7 @@ private:
 	/// LaTeX syntax highlighter
 	LaTeXHighlighter * highlighter_;
 	///
-	QString view_format_;
+	std::string view_format_;
 	///
 	QTimer * update_timer_;
 	/// TexRow information from the last source view. If TexRow is unavailable
@@ -116,8 +121,9 @@ public:
 	bool wantInitialFocus() const { return false; }
 	///@}
 
+private Q_SLOTS:
 	/// The title displayed by the dialog reflects source type.
-	QString title() const;
+	void updateTitle();
 
 private:
 	/// The encapsulated widget.