Bugfix: Browser's HTML panel was collapsed sometimes.

src/laybasic/laybasic/BrowserPanel.ui

@@ -77,7 +77,7 @@
         <property name="orientation">
          <enum>Qt::Horizontal</enum>
         </property>
-        <widget class="QFrame" name="frame_2">
+        <widget class="QFrame" name="navigation_frame">
          <property name="sizePolicy">
           <sizepolicy hsizetype="Preferred" vsizetype="Preferred">
            <horstretch>0</horstretch>

src/laybasic/laybasic/layBrowserPanel.cc

@@ -330,6 +330,8 @@ BrowserPanel::refresh_bookmark_list ()
     item->setData (0, Qt::ToolTipRole, tl::to_qstring (i->title));
     item->setData (0, Qt::DecorationRole, QIcon (":/bookmark_16.png"));
   }
+
+  update_navigation_panel ();
 }
 
 void
@@ -482,7 +484,7 @@ BrowserPanel::set_home (const std::string &url)
   QList<int> sizes = mp_ui->splitter->sizes ();
   if (sizes.size () >= 2) {
     int size_outline = 150;
-    sizes[1] += sizes[0] - size_outline;
+    sizes[1] += std::max (width () - 10 - size_outline, 10);
     sizes[0] = size_outline;
   }
   mp_ui->splitter->setSizes (sizes);
@@ -615,6 +617,13 @@ update_item_with_outline (const BrowserOutline &ol, QTreeWidgetItem *item)
   }
 }
 
+void
+BrowserPanel::update_navigation_panel ()
+{
+  bool navigation_visible = mp_ui->outline_tree->topLevelItemCount () > 0 || mp_ui->browser_bookmark_view->topLevelItemCount () > 0;
+  mp_ui->navigation_frame->setVisible (navigation_visible);
+}
+
 void
 BrowserPanel::set_outline (const BrowserOutline &ol)
 {
@@ -641,6 +650,8 @@ BrowserPanel::set_outline (const BrowserOutline &ol)
     mp_ui->outline_tree->expandAll ();
 
   }
+
+  update_navigation_panel ();
 }
 
 QVariant 

src/laybasic/laybasic/layBrowserPanel.h

@@ -477,6 +477,7 @@ private:
   void add_bookmark (const BookmarkItem &item);
   void refresh_bookmark_list ();
   void store_bookmarks ();
+  void update_navigation_panel ();
 };
 
 }