From aadf05dcb8ee392f3afeb7aee46772e4ac0516f8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Branimir=20Karad=C5=BEi=C4=87?= <branimirkaradzic@gmail.com>
Date: Mon, 6 Jun 2016 18:17:40 -0700
Subject: [PATCH] Added basic file list ImGui widget.

---
 3rdparty/ocornut-imgui/imgui_user.h          |   1 +
 3rdparty/ocornut-imgui/imgui_user.inl        |   1 +
 3rdparty/ocornut-imgui/widgets/file_list.h   |  30 +++++
 3rdparty/ocornut-imgui/widgets/file_list.inl | 135 +++++++++++++++++++
 4 files changed, 167 insertions(+)
 create mode 100644 3rdparty/ocornut-imgui/widgets/file_list.h
 create mode 100644 3rdparty/ocornut-imgui/widgets/file_list.inl

diff --git a/3rdparty/ocornut-imgui/imgui_user.h b/3rdparty/ocornut-imgui/imgui_user.h
index bf68388cd..69f26228b 100644
--- a/3rdparty/ocornut-imgui/imgui_user.h
+++ b/3rdparty/ocornut-imgui/imgui_user.h
@@ -15,4 +15,5 @@ namespace ImGui
 
 } // namespace ImGui
 
+#include "widgets/file_list.h"
 #include "widgets/memory_editor.h"
diff --git a/3rdparty/ocornut-imgui/imgui_user.inl b/3rdparty/ocornut-imgui/imgui_user.inl
index abdb141f2..81a949ac5 100644
--- a/3rdparty/ocornut-imgui/imgui_user.inl
+++ b/3rdparty/ocornut-imgui/imgui_user.inl
@@ -1 +1,2 @@
+#include "widgets/file_list.inl"
 #include "widgets/memory_editor.inl"
diff --git a/3rdparty/ocornut-imgui/widgets/file_list.h b/3rdparty/ocornut-imgui/widgets/file_list.h
new file mode 100644
index 000000000..c82155989
--- /dev/null
+++ b/3rdparty/ocornut-imgui/widgets/file_list.h
@@ -0,0 +1,30 @@
+#include <stdint.h>
+
+namespace ImGui
+{
+	struct ImFileInfo
+	{
+		ImFileInfo(const char* name, int64_t size);
+		~ImFileInfo();
+		ImFileInfo& operator=(const ImFileInfo& rhs);
+
+		char* Name;
+		int64_t Size;
+	};
+
+	struct ImFileList
+	{
+		ImVector<ImFileInfo> FileList;
+		int Pos;
+
+		ImFileList(const char* path = ".")
+			: Pos(0)
+		{
+			ChDir(path);
+		}
+
+		void ChDir(const char* path);
+		void Draw();
+	};
+
+} // namespace ImGui
diff --git a/3rdparty/ocornut-imgui/widgets/file_list.inl b/3rdparty/ocornut-imgui/widgets/file_list.inl
new file mode 100644
index 000000000..7da4cea22
--- /dev/null
+++ b/3rdparty/ocornut-imgui/widgets/file_list.inl
@@ -0,0 +1,135 @@
+#include <dirent.h>
+#include <sys/stat.h>
+
+namespace ImGui
+{
+	ImFileInfo::ImFileInfo(const char* name, int64_t size)
+	{
+		Name = ImStrdup(name);
+		Size = size;
+	}
+
+	ImFileInfo::~ImFileInfo()
+	{
+		MemFree(Name);
+		Name = NULL;
+	}
+
+	ImFileInfo& ImFileInfo::operator=(const ImFileInfo& rhs)
+	{
+		if (this != &rhs)
+		{
+			Name = ImStrdup(rhs.Name);
+			Size = rhs.Size;
+		}
+
+		return *this;
+	}
+
+	void ImFileList::ChDir(const char* path)
+	{
+		DIR* dir = opendir(path);
+		if (NULL != dir)
+		{
+			FileList.clear();
+
+			for (dirent* item = readdir(dir); NULL != item; item = readdir(dir) )
+			{
+				if (0 == ImStricmp(item->d_name, "..") )
+				{
+					FileList.push_back(ImFileInfo(item->d_name, -1) );
+				}
+				else if (0 != ImStricmp(item->d_name, ".") )
+				{
+					if (item->d_type & DT_DIR)
+					{
+						FileList.push_back(ImFileInfo(item->d_name, -1) );
+					}
+					else
+					{
+						struct stat statbuf;
+						stat(item->d_name, &statbuf);
+						FileList.push_back(ImFileInfo(item->d_name, statbuf.st_size) );
+					}
+				}
+			}
+
+			closedir(dir);
+		}
+	}
+
+	void ImFileList::Draw()
+	{
+		BeginChild("##file_list", ImVec2(0.0f, 0.0f) );
+		PushFont(Font::Mono);
+
+		PushItemWidth(-1);
+		if (ListBoxHeader("##empty", ImVec2(0.0f, 0.0f) ) )
+		{
+			const float lineHeight = GetTextLineHeightWithSpacing();
+
+			char* chdir = NULL;
+
+			int pos = 0;
+			ImGuiListClipper clipper(FileList.size(), lineHeight);
+			for (ImVector<ImFileInfo>::const_iterator it = FileList.begin(), itEnd = FileList.end()
+				; it != itEnd
+				; ++it
+				)
+			{
+				if (pos >= clipper.DisplayStart
+				&&  pos <  clipper.DisplayEnd)
+				{
+					PushID(pos);
+
+					const bool isDir = -1 == it->Size;
+					bool isSelected  = Pos == pos;
+
+					bool clicked = Selectable(it->Name, &isSelected, 0, ImVec2(150.0f, 0.0f) );
+					SameLine();
+					if (isDir)
+					{
+						Text("%10s", "<DIR>");
+					}
+					else
+					{
+						Text("%10d", it->Size);
+					}
+
+					if (clicked)
+					{
+						if (0 == ImStricmp(it->Name, "..") )
+						{
+							MemFree(chdir);
+							chdir = ImStrdup(it->Name);
+						}
+
+						Pos = pos;
+
+						if (isDir)
+						{
+							MemFree(chdir);
+							chdir = ImStrdup(it->Name);
+						}
+					}
+
+					PopID();
+				}
+				++pos;
+			}
+			clipper.End();
+
+			ListBoxFooter();
+
+			if (NULL != chdir)
+			{
+				ChDir(chdir);
+				MemFree(chdir);
+			}
+		}
+
+		PopFont();
+		EndChild();
+	}
+
+} // namespace ImGui