Merge branch 'hotfix-1.7' into develop

include/nana/filesystem/filesystem.hpp

@@ -108,11 +108,16 @@ namespace std {
 	{
 		using namespace experimental::filesystem;
 	}
+
+#ifndef __cpp_lib_experimental_filesystem
+#   define __cpp_lib_experimental_filesystem 201406
+#endif
 } // std
 
 #else
 #   undef NANA_USING_STD_FILESYSTEM
 #   define NANA_USING_STD_FILESYSTEM 1
+	//Detects whether the compiler supports std::filesystem under current options
 #	if ((defined(_MSC_VER) && (_MSC_VER >= 1912) && defined(_MSVC_LANG) && _MSVC_LANG >= 201703)) ||				\
 		((__cplusplus >= 201703L) && \
 			(defined(__clang__) && (__clang_major__ >= 7) ||		\
@@ -125,14 +130,11 @@ namespace std {
 				using namespace std::experimental::filesystem;
 			}
 		}
+#		undef NANA_USING_STD_EXPERIMENTAL_FILESYSTEM
+#		define NANA_USING_STD_EXPERIMENTAL_FILESYSTEM
 #	endif
 #endif
 
-
-#ifndef __cpp_lib_experimental_filesystem
-#   define __cpp_lib_experimental_filesystem 201406
-#endif
-
 #if NANA_USING_NANA_FILESYSTEM
 
 #include <string>
@@ -558,7 +560,23 @@ namespace std {
 #endif
 	}
 } // std
+#else
 
+//Implements the missing functions for various version of experimental/filesystem
+#	if defined(NANA_USING_STD_EXPERIMENTAL_FILESYSTEM)
+	namespace std
+	{
+		namespace filesystem
+		{
+			//Visual Studio 2017
+			#if (defined(_MSC_VER) && (_MSC_VER > 1912)) ||	\
+				(!defined(__clang__) && defined(__GNUC__) && (__GNUC__ * 100 + __GNUC_MINOR__ < 801))
+			path weakly_canonical(const path& p);
+			path weakly_canonical(const path& p, std::error_code& err);
+			#endif
+		}
+	}
+#	endif
 
 #endif	//NANA_USING_NANA_FILESYSTEM
 

include/nana/gui/widgets/detail/tree_cont.hpp

@@ -1,6 +1,6 @@
 /*
  *	A Tree Container class implementation
- *	Copyright(C) 2003-2018 Jinhao(cnjinhao@hotmail.com)
+ *	Copyright(C) 2003-2019 Jinhao(cnjinhao@hotmail.com)
  *
  *	Distributed under the Boost Software License, Version 1.0.
  *	(See accompanying file LICENSE_1_0.txt or copy at
@@ -193,6 +193,11 @@ namespace detail
 			node_type* insert(const std::string& key, const element_type& elem)
 			{
 				auto node = _m_locate<true>(key);
+
+				//Doesn't return the root node
+				if (node == &root_)
+					return nullptr;
+
 				if(node)
 					node->value.second = elem;
 				return node;
@@ -206,12 +211,14 @@ namespace detail
 
 			node_type* find(const std::string& path) const
 			{
-				return _m_locate(path);
+				auto p = _m_locate(path);
+				return (&root_ == p ? nullptr : p);
 			}
 
 			node_type* ref(const std::string& path)
 			{
-				return _m_locate<true>(path);
+				auto p = _m_locate<true>(path);
+				return (&root_ == p ? nullptr : p);
 			}
 
 			unsigned indent_size(const node_type* node) const
@@ -479,15 +486,16 @@ namespace detail
 				return nullptr;
 			}
 
-			// foreach elements of key.
-			// the root name "/" and "\\" are treated as a node. This is a feature that can easily support the UNIX-like path.
 			template<typename Function>
 			void _m_for_each(const ::std::string& key, Function function) const
 			{
-				if(key.size())
+				//Ignores separaters at the begin of key.
-				{
+				::std::string::size_type beg = key.find_first_not_of("\\/");
-					::std::string::size_type beg = 0;
+				if (key.npos == beg)
-					auto end = key.find_first_of("\\/");
+					return;
+
+				auto end = key.find_first_of("\\/", beg);
+
 
 				while(end != ::std::string::npos)
 				{
@@ -515,7 +523,6 @@ namespace detail
 
 				function(key.substr(beg, key.size() - beg));
 			}
-			}
 
 			template<bool CreateIfNotExists>
 			node_type* _m_locate(const ::std::string& key)

include/nana/gui/widgets/float_listbox.hpp

@@ -1,7 +1,7 @@
 /**
  *	A float_listbox Implementation
  *	Nana C++ Library(http://www.nanapro.org)
- *	Copyright(C) 2003-2015 Jinhao(cnjinhao@hotmail.com)
+ *	Copyright(C) 2003-2019 Jinhao(cnjinhao@hotmail.com)
  *
  *	Distributed under the Boost Software License, Version 1.0. 
  *	(See accompanying file LICENSE_1_0.txt or copy at 
@@ -46,8 +46,10 @@ namespace nana
 			class item_renderer
 			{
 			public:
-				typedef widget&	widget_reference;
+				using widget_reference = widget&;
-				typedef paint::graphics& graph_reference;
+				using graph_reference = paint::graphics&;
+				using item_interface = float_listbox::item_interface;
+
 				enum state_t{StateNone, StateHighlighted};
 
 				virtual ~item_renderer() = default;

include/nana/gui/widgets/treebox.hpp

@@ -480,6 +480,8 @@ namespace nana
 		 */
 		void scroll_into_view(item_proxy item);
 
+		/// Gets the current hovered node.
+		item_proxy hovered(bool exclude_expander) const;
 	private:
 		std::shared_ptr<scroll_operation_interface> _m_scroll_operation() override;
 

source/filesystem/filesystem.cpp

@@ -1130,7 +1130,7 @@ namespace nana {	namespace experimental {	namespace filesystem
 				::fclose(stream);
 				return bytes;
 			}
-			ec.assign(static_cast<int>(::errno), std::generic_category());
+			ec.assign(static_cast<int>(errno), std::generic_category());
 #endif
 			return static_cast<std::uintmax_t>(-1);
 		}
@@ -1265,7 +1265,7 @@ namespace std
 			return p;  // p.is_absolute() is true
 		}
 
-		path absolute(const path& p, std::error_code& err)
+		path absolute(const path& p, std::error_code& /*err*/)
 		{
 			return absolute(p);
 		}
@@ -1350,7 +1350,7 @@ namespace std
 			{	//error
 				if (nullptr == ec)
 					throw (filesystem_error(
-						"nana::filesystem::canonical", p,
+						message, p,
 						error_code(err_val, generic_category())));
 				else
 					ec->assign(err_val, system_category());
@@ -1435,5 +1435,162 @@ namespace std
 	}//end namespace filesystem
 }//end namespace std
 
-#endif
+#else 	//NANA_USING_NANA_FILESYSTEM
+#	if defined(NANA_USING_STD_EXPERIMENTAL_FILESYSTEM)
+
+	//Defines the functions that are not provided by experimental/filesystem
+	namespace std
+	{
+		namespace filesystem
+		{
+			#if (defined(_MSC_VER) && (_MSC_VER > 1912)) || \
+				(!defined(__clang__) && defined(__GNUC__) && (__GNUC__ * 100 + __GNUC_MINOR__ < 801))
+
+			namespace detail
+			{
+				bool try_throw(int err_val, const path& p, std::error_code* ec, const char* message)
+				{
+					if (0 == err_val)
+					{
+						if (ec) ec->clear();
+					}
+					else
+					{	//error
+						if (nullptr == ec)
+							throw (filesystem_error(
+								message, p,
+								error_code(err_val, generic_category())));
+						else
+							ec->assign(err_val, system_category());
+					}
+					return err_val != 0;
+				}
+
+				path lexically_normal(path p)
+				{
+					if (p.empty())
+						return p;
+
+					std::vector<path> elements;
+
+					while (!p.empty())
+					{
+						elements.emplace_back(p.filename());
+						p.remove_filename();
+					}
+
+					auto start = elements.begin();
+					auto last = elements.end();
+					auto stop = last--;
+					for (auto itr(start); itr != stop; ++itr)
+					{
+						// ignore "." except at start and last
+						if (itr->native().size() == 1
+							&& (itr->native())[0] == '.'
+							&& itr != start
+							&& itr != last) continue;
+
+						// ignore a name and following ".."
+						if (!p.empty()
+							&& itr->native().size() == 2
+							&& (itr->native())[0] == '.'
+							&& (itr->native())[1] == '.') // dot dot
+						{
+							auto lf(p.filename().native());
+							if (lf.size() > 0
+								&& (lf.size() != 1
+									|| (lf[0] != '.'
+										&& (lf[0] != '/' && lf[0] != '\\')))
+								&& (lf.size() != 2
+									|| (lf[0] != '.'
+										&& lf[1] != '.'
+	#             ifdef NANA_WINDOWS
+										&& lf[1] != ':'
+	#             endif
+										)
+									)
+								)
+							{
+								p.remove_filename();
+								auto next = itr;
+								if (p.empty() && ++next != stop
+									&& next == last && last->string() == ".")
+								{
+									p /= ".";
+								}
+								continue;
+							}
+						}
+
+						p /= *itr;
+					};
+
+					if (p.empty())
+						p = ".";
+					return p;
+				}
+			}
+
+			path weakly_canonical(const path& p, std::error_code* err)
+			{
+				path head{ p };
+
+				std::error_code tmp_err;
+				std::vector<path> elements;
+				while (!head.empty())
+				{
+					auto head_status = status(head, tmp_err);
+
+					if (head_status.type() == file_type::unknown)
+					{
+						if (detail::try_throw(static_cast<int>(errc::invalid_argument), head, err, "nana::filesystem::weakly_canonical"))
+							return path{};
+					}
+					if (head_status.type() != file_type::not_found)
+						break;
+
+					elements.emplace_back(head.filename());
+					head.remove_filename();
+				}
+
+				bool tail_has_dots = false;
+				path tail;
+
+				for (auto & e : elements)
+				{
+					tail /= e;
+					// for a later optimization, track if any dot or dot-dot elements are present
+					if (e.native().size() <= 2
+						&& e.native()[0] == '.'
+						&& (e.native().size() == 1 || e.native()[1] == '.'))
+						tail_has_dots = true;
+				}
+
+				if (head.empty())
+					return detail::lexically_normal(p);
+				head = canonical(head, tmp_err);
+				if (detail::try_throw(tmp_err.value(), head, err, "nana::filesystem::weakly_canonical"))
+					return path();
+				return tail.empty()
+					? head
+					: (tail_has_dots  // optimization: only normalize if tail had dot or dot-dot element
+						? detail::lexically_normal(head / tail)
+						: head / tail);
+			}
+
+			path weakly_canonical(const path& p)
+			{
+				return weakly_canonical(p, nullptr);
+			}
+
+			path weakly_canonical(const path& p, std::error_code& err)
+			{
+				return weakly_canonical(p, &err);
+			}
+			#endif
+		}
+	}
+#	endif
+
+#endif //NANA_USING_NANA_FILESYSTEM
 

source/gui/widgets/listbox.cpp

@@ -15,6 +15,7 @@
  *		Benjamin Navarro(pr#81)
  *		besh81(pr#130)
  *		dankan1890(pr#158)
+ *		ErrorFlynn(pr#418)
  *
  */
 #include <algorithm>
@@ -5455,11 +5456,14 @@ namespace nana
 			internal_scope_guard lock;
 
 			if (_m_ess().lister.enable_ordered(enable))
+			{
 				_m_ess().update();
-
 				return true;
 			}
 
+			return false;
+		}
+
 		void listbox::auto_draw(bool enabled) noexcept
 		{
 			internal_scope_guard lock;

source/gui/widgets/treebox.cpp

@@ -2371,6 +2371,19 @@ namespace nana
 				API::refresh_window(*this);
 		}
 
+		treebox::item_proxy treebox::hovered(bool exclude_expander) const
+		{
+			internal_scope_guard lock;
+			auto dw = &get_drawer_trigger();
+			if (dw->impl()->node_state.pointed)
+			{
+				//Returns empty item_proxy if the mouse is on expander and exclude_expander is required.
+				if (exclude_expander && (dw->impl()->node_state.comp_pointed == drawerbase::treebox::component::expander))
+					return item_proxy{};
+			}
+			return item_proxy(const_cast<drawer_trigger_t*>(dw), dw->impl()->node_state.pointed);
+		}
+
 		std::shared_ptr<scroll_operation_interface> treebox::_m_scroll_operation()
 		{
 			internal_scope_guard lock;