Adding open folder button for mods. (#458)

* Adding open folde buttonr for mods.

* Updating && symbol and switching to osShellExecute

* Removing windows.h import

* Spurios addition

---------

Co-authored-by: Karjala22 <78927981+Karjala22@users.noreply.github.com>

Author: ifeldshteyn

TheForceEngine/TFE_FrontEndUI/modLoader.cpp

@@ -70,6 +70,7 @@ namespace TFE_FrontEndUI
 
 	static ViewMode s_viewMode = VIEW_IMAGES;
 
+	char programDirModDir[TFE_MAX_PATH];
 	static char s_modFilter[256] = { 0 };
 	static char s_prevModFilter[256] = { 0 };
 	static size_t s_filterLen = 0;
@@ -90,7 +91,8 @@ namespace TFE_FrontEndUI
 
 	void modLoader_read()
 	{
-		if (s_modsRead) { return; }
+		// Reuse the cached mods unless no mods have been read yet.
+		if (s_modsRead && s_mods.size() > 0) { return; }
 		s_modsRead = true;
 
 		s_mods.clear();
@@ -118,7 +120,6 @@ namespace TFE_FrontEndUI
 		sprintf(programDataModDir, "%sMods/", programData);
 		TFE_Paths::fixupPathAsDirectory(programDataModDir);
 
-		char programDirModDir[TFE_MAX_PATH];
 		sprintf(programDirModDir, "%sMods/", programDir);
 		TFE_Paths::fixupPathAsDirectory(programDirModDir);
 
@@ -142,6 +143,7 @@ namespace TFE_FrontEndUI
 
 		if (!modPathCount)
 		{
+			s_modsRead = false;
 			return;
 		}
 
@@ -444,6 +446,24 @@ namespace TFE_FrontEndUI
 			}
 			filterMods(s_viewMode != VIEW_FILE_LIST);
 		}
+
+		ImGui::SameLine(510.0f * uiScale);
+		if (ImGui::Button("Refresh Mod Listing"))
+		{
+			s_modsRead = false;
+			modLoader_read();
+		}
+
+		#ifdef _WIN32
+		ImGui::SameLine(730.0f * uiScale);
+		if (ImGui::Button("Open Mod Folder"))
+		{
+			if (!TFE_System::osShellExecute(programDirModDir, NULL, NULL, false))
+			{
+				TFE_System::logWrite(LOG_ERROR, "ModLoader", "Failed to open the directory: '%s'", programDirModDir);
+			}
+		}
+		#endif
 
 		ImGui::Separator();