lokdocview: fix not updated part selector when search changes part

Change-Id: I337eed47c56dbbbebda4d7fe716eab6177936dc0
(cherry picked from commit c7ecbbbb6acf92af4ded4119da6abdddace39fe0)

2 files changed, 33 insertions, 2 deletions

diff --git a/libreofficekit/qa/gtktiledviewer/gtktiledviewer.cxx b/libreofficekit/qa/gtktiledviewer/gtktiledviewer.cxx
index edd5006ccd48..ed2471f6c401 100644
--- a/libreofficekit/qa/gtktiledviewer/gtktiledviewer.cxx
+++ b/libreofficekit/qa/gtktiledviewer/gtktiledviewer.cxx
@@ -45,6 +45,8 @@ static GtkWidget* pVBox;
 // GtkComboBox requires gtk 2.24 or later
 #if ( GTK_MAJOR_VERSION == 2 && GTK_MINOR_VERSION >= 24 ) || GTK_MAJOR_VERSION > 2
 static GtkComboBoxText* pPartSelector;
+/// Should the part selector avoid calling lok::Document::setPart()?
+static bool g_bPartSelectorBroadcast = true;
 #endif
 GtkWidget* pFindbar;
 GtkWidget* pFindbarEntry;
@@ -238,6 +240,15 @@ static void signalSearch(LOKDocView* /*pLOKDocView*/, char* /*pPayload*/, gpoint
     gtk_label_set_text(GTK_LABEL(pFindbarLabel), "Search key not found");
 }
 
+static void signalPart(LOKDocView* /*pLOKDocView*/, int nPart, gpointer /*pData*/)
+{
+#if GTK_CHECK_VERSION(2,24,0)
+    g_bPartSelectorBroadcast = false;
+    gtk_combo_box_set_active(GTK_COMBO_BOX(pPartSelector), nPart);
+    g_bPartSelectorBroadcast = true;
+#endif
+}
+
 /// User clicked on a cmmand button -> inform LOKDocView.
 static void toggleToolItem(GtkWidget* pWidget, gpointer /*pData*/)
 {
@@ -285,7 +296,7 @@ static void changePart( GtkWidget* pSelector, gpointer /* pItem */ )
 {
     int nPart = gtk_combo_box_get_active( GTK_COMBO_BOX(pSelector) );
 
-    if ( pDocView )
+    if (g_bPartSelectorBroadcast && pDocView)
     {
         lok_docview_set_part( LOK_DOCVIEW(pDocView), nPart );
     }
@@ -443,6 +454,7 @@ int main( int argc, char* argv[] )
     g_signal_connect(pDocView, "edit-changed", G_CALLBACK(signalEdit), NULL);
     g_signal_connect(pDocView, "command-changed", G_CALLBACK(signalCommand), NULL);
     g_signal_connect(pDocView, "search-not-found", G_CALLBACK(signalSearch), NULL);
+    g_signal_connect(pDocView, "part-changed", G_CALLBACK(signalPart), NULL);
 
     // Input handling.
     g_signal_connect(pWindow, "key-press-event", G_CALLBACK(signalKey), pDocView);
diff --git a/libreofficekit/source/gtk/lokdocview.cxx b/libreofficekit/source/gtk/lokdocview.cxx
index 874f96a1f6ba..73dd15e172fb 100644
--- a/libreofficekit/source/gtk/lokdocview.cxx
+++ b/libreofficekit/source/gtk/lokdocview.cxx
@@ -194,6 +194,8 @@ struct LOKDocView_Impl
     void commandChanged(const std::string& rPayload);
     /// Search did not find any matches.
     void searchNotFound(const std::string& rPayload);
+    /// LOK decided to change parts, need to update UI.
+    void setPart(const std::string& rPayload);
 };
 
 namespace {
@@ -1019,7 +1021,7 @@ gboolean LOKDocView_Impl::callbackImpl(CallbackData* pCallback)
     break;
     case LOK_CALLBACK_SET_PART:
     {
-        renderDocument(0);
+        setPart(pCallback->m_aPayload);
     }
     break;
     default:
@@ -1066,6 +1068,7 @@ enum
     EDIT_CHANGED,
     COMMAND_CHANGED,
     SEARCH_NOT_FOUND,
+    PART_CHANGED,
     LAST_SIGNAL
 };
 
@@ -1081,6 +1084,12 @@ void LOKDocView_Impl::searchNotFound(const std::string& rString)
     g_signal_emit(m_pDocView, docview_signals[SEARCH_NOT_FOUND], 0, rString.c_str());
 }
 
+void LOKDocView_Impl::setPart(const std::string& rString)
+{
+    g_signal_emit(m_pDocView, docview_signals[PART_CHANGED], 0, std::stoi(rString));
+    renderDocument(0);
+}
+
 static void lok_docview_class_init( gpointer ptr )
 {
     LOKDocViewClass* pClass = static_cast<LOKDocViewClass *>(ptr);
@@ -1115,6 +1124,16 @@ static void lok_docview_class_init( gpointer ptr )
                      g_cclosure_marshal_VOID__STRING,
                      G_TYPE_NONE, 1,
                      G_TYPE_STRING);
+    pClass->part_changed = 0;
+    docview_signals[PART_CHANGED] =
+        g_signal_new("part-changed",
+                     G_TYPE_FROM_CLASS(gobject_class),
+                     G_SIGNAL_RUN_FIRST,
+                     G_STRUCT_OFFSET(LOKDocViewClass, part_changed),
+                     NULL, NULL,
+                     g_cclosure_marshal_VOID__INT,
+                     G_TYPE_NONE, 1,
+                     G_TYPE_INT);
 }
 
 static void lok_docview_init( GTypeInstance* pInstance, gpointer )