[LyX/master] Reset CategorizedCombo filter when switching between non-TeX and TeX fonts

[Juergen Spitzmueller]

commit b8969d2e9c380dc8bcb1e452e575eca47c279b0a
Author: Juergen Spitzmueller <spitz at lyx.org>
Date:   Tue Jul 14 15:49:15 2020 +0200

    Reset CategorizedCombo filter when switching between non-TeX and TeX fonts
---
 src/frontends/qt/CategorizedCombo.cpp |    5 +++++
 src/frontends/qt/CategorizedCombo.h   |    2 ++
 src/frontends/qt/GuiDocument.cpp      |    4 ++++
 3 files changed, 11 insertions(+), 0 deletions(-)

diff --git a/src/frontends/qt/CategorizedCombo.cpp b/src/frontends/qt/CategorizedCombo.cpp
index 3460a14..f8e8ef6 100644
--- a/src/frontends/qt/CategorizedCombo.cpp
+++ b/src/frontends/qt/CategorizedCombo.cpp
@@ -539,6 +539,11 @@ void CategorizedCombo::reset()
 	d->model_->clear();
 }
 
+void CategorizedCombo::resetFilter()
+{
+	d->resetFilter();
+}
+
 
 void CategorizedCombo::updateCombo()
 {
diff --git a/src/frontends/qt/CategorizedCombo.h b/src/frontends/qt/CategorizedCombo.h
index a9a200a..3ce7da7 100644
--- a/src/frontends/qt/CategorizedCombo.h
+++ b/src/frontends/qt/CategorizedCombo.h
@@ -41,6 +41,8 @@ public:
 	bool set(QString const & cc);
 	/// Reset the combobox.
 	void reset();
+	/// Reset the combobox filter.
+	void resetFilter();
 	/// Update combobox.
 	void updateCombo();
 	/// Add Item to combo according to sorting settings from preferences
diff --git a/src/frontends/qt/GuiDocument.cpp b/src/frontends/qt/GuiDocument.cpp
index 269985c..a82fc17 100644
--- a/src/frontends/qt/GuiDocument.cpp
+++ b/src/frontends/qt/GuiDocument.cpp
@@ -2333,6 +2333,7 @@ void GuiDocument::osFontsChanged(bool nontexfonts)
 	int const font_sf_scale = fontModule->scaleSansSB->value();
 	int const font_tt_scale = fontModule->scaleTypewriterSB->value();
 
+	// reset the filters
 	updateFontlist();
 	// store default format
 	QString const dformat = outputModule->defaultFormatCO->itemData(
@@ -2599,6 +2600,9 @@ void GuiDocument::updateTexFonts()
 
 void GuiDocument::updateFontlist()
 {
+	fontModule->fontsRomanCO->resetFilter();
+	fontModule->fontsSansCO->resetFilter();
+	fontModule->fontsTypewriterCO->resetFilter();
 	fontModule->fontsRomanCO->clear();
 	fontModule->fontsSansCO->clear();
 	fontModule->fontsTypewriterCO->clear();