feat(tesseratos): add file selector plugin

tools/tesseratos/CMakeLists.txt

@@ -10,6 +10,7 @@ set(TESSERATOS_SOURCE
 	"src/tesseratos/scene_editor/plugin.cpp"
 	"src/tesseratos/voxel_palette_editor/plugin.cpp"
 	"src/tesseratos/importer/plugin.cpp"
+	"src/tesseratos/file_selector/plugin.cpp"
 )
 
 add_executable(tesseratos ${TESSERATOS_SOURCE})

tools/tesseratos/src/tesseratos/file_selector/plugin.cpp

@@ -0,0 +1,193 @@
+#include "plugin.hpp"
+#include <filesystem>
+
+#include <imgui.h>
+
+#include <cubos/core/data/fs/file_system.hpp>
+#include <cubos/core/memory/standard_stream.hpp>
+
+#include <cubos/engine/imgui/plugin.hpp>
+
+using cubos::core::data::FileSystem;
+using cubos::engine::Cubos;
+
+namespace fs = std::filesystem;
+
+using namespace tesseratos;
+
+namespace
+{
+    struct FileSelectorState
+    {
+        CUBOS_ANONYMOUS_REFLECT(FileSelectorState);
+
+        // Absolute path to the current directory (for the filesystem not for the virtual filesystem)
+        std::string currentPath =
+            (fs::current_path().parent_path().parent_path() / "tools" / "tesseratos" / "assets").string();
+        // bool isLocal = true to use the virtual filesystem
+        bool isLocal = true;
+        bool isGridMode = true;
+        bool showFileSelector = false;
+        std::string selectedFile;
+    };
+} // namespace
+
+static std::optional<std::string> showFileSelector(FileSelectorState& state)
+{
+    if (!state.showFileSelector)
+    {
+        return std::nullopt;
+    }
+
+    ImGui::Begin("File Selector");
+
+    // Absolue path for the virtual filesystem
+    std::string relativePath =
+        fs::relative(state.currentPath, fs::current_path().parent_path().parent_path() / "tools" / "tesseratos")
+            .string();
+
+    std::replace(relativePath.begin(), relativePath.end(), '\\', '/');
+
+    ImGui::Text("Current Path: %s", state.isLocal ? std::string(relativePath).c_str() : state.currentPath.c_str());
+
+    ImGui::Separator();
+
+    // Search bar
+    static char searchBuffer[256] = "";
+    ImGui::InputTextWithHint("##search", "Search...", searchBuffer, sizeof(searchBuffer));
+
+    ImGui::SameLine();
+
+    // Parent directory button
+    if (!(state.isLocal && relativePath == "assets"))
+    {
+        if (ImGui::Button("Up"))
+        {
+            state.currentPath = fs::path(state.currentPath).parent_path().string();
+        }
+    }
+
+    ImGui::SameLine();
+
+    // View mode toggle
+    if (ImGui::RadioButton("Grid", state.isGridMode))
+    {
+        state.isGridMode = true;
+    }
+
+    ImGui::SameLine();
+
+    if (ImGui::RadioButton("List", !state.isGridMode))
+    {
+        state.isGridMode = false;
+    }
+
+    ImGui::Separator();
+
+    float cellSize = 100.0F; // Size of each grid cell
+    float padding = 10.0F;   // Padding between cells
+
+    if (state.isGridMode)
+    {
+        // Calculate number of columns for grid layout
+        float panelWidth = ImGui::GetContentRegionAvail().x;
+        int columns = (int)(panelWidth / (cellSize + padding));
+        if (columns < 1)
+        {
+            columns = 1;
+        }
+        ImGui::Columns(columns, nullptr, false);
+    }
+
+    for (const auto& entry : fs::directory_iterator(state.currentPath))
+    {
+        // Filter files and directories based on search query
+        std::string fileName = entry.path().filename().string();
+        if (strlen(searchBuffer) > 0 && fileName.find(searchBuffer) == std::string::npos)
+            continue;
+
+        if (entry.is_directory())
+        {
+            // Directories
+            if (ImGui::Button((fileName + "/").c_str(), state.isGridMode ? ImVec2(cellSize, cellSize) : ImVec2(0, 0)))
+            {
+                state.currentPath = entry.path().string();
+            }
+        }
+        else if (entry.is_regular_file())
+        {
+            // Files
+            if (ImGui::Selectable(fileName.c_str(), state.selectedFile == entry.path().string(), 0,
+                                  state.isGridMode ? ImVec2(cellSize, cellSize) : ImVec2(0, 0)))
+            {
+                std::string selectedFilePath = entry.path().string();
+                if (state.isLocal)
+                {
+                    selectedFilePath = fs::relative(selectedFilePath, fs::current_path().parent_path().parent_path() /
+                                                                          "tools" / "tesseratos")
+                                           .string();
+                    std::replace(selectedFilePath.begin(), selectedFilePath.end(), '\\', '/');
+                    state.selectedFile = selectedFilePath;
+                }
+                else
+                {
+                    state.selectedFile = selectedFilePath;
+                }
+            }
+        }
+
+        if (state.isGridMode)
+            ImGui::NextColumn(); // Move to next column in grid layout
+    }
+
+    if (state.isGridMode)
+        ImGui::Columns(1); // End grid layout
+
+    ImGui::Separator();
+
+    // Display selected file
+    if (!state.selectedFile.empty())
+    {
+        ImGui::Text("Selected File: %s", state.selectedFile.c_str());
+
+        // Confirm button
+        if (ImGui::Button("Select"))
+        {
+            ImGui::End();
+            std::string selectedFile = state.selectedFile;
+            state.selectedFile.clear();
+            state.showFileSelector = false;
+            return selectedFile;
+        }
+    }
+    else
+    {
+        ImGui::Text("No file selected.");
+    }
+
+    ImGui::End();
+    return std::nullopt;
+}
+
+static std::optional<std::string> createFileSelectorButton(FileSelectorState& state, const char* label)
+{
+    if (ImGui::Button(label))
+    {
+        state.showFileSelector = true;
+    }
+
+    auto selectedFile = showFileSelector(state);
+    return selectedFile;
+}
+
+void tesseratos::fileSelectorPlugin(Cubos& cubos)
+{
+    cubos.depends(cubos::engine::imguiPlugin);
+    cubos.resource<FileSelectorState>();
+
+    cubos.system("show File Selector UI").tagged(cubos::engine::imguiTag).call([](FileSelectorState& state) {
+        ImGui::Begin("File Selector");
+        createFileSelectorButton(state, "Open File Selector");
+        ImGui::End();
+    });
+}

tools/tesseratos/src/tesseratos/file_selector/plugin.hpp

@@ -0,0 +1,25 @@
+/// @dir
+/// @brief @ref tesseratos-file-selector-plugin plugin directory.
+
+/// @file
+/// @brief Plugin entry point.
+/// @ingroup tesseratos-file-selector-plugin
+
+#pragma once
+
+#include <cubos/engine/prelude.hpp>
+
+namespace tesseratos
+{
+    /// @defgroup tesseratos-file-selector-plugin Asset explorer
+    /// @ingroup tesseratos
+    /// @brief Allows selecting files in the filesystem
+    ///
+    /// ## Dependencies
+    /// - @ref imgui-plugin
+
+    /// @brief Plugin entry function.
+    /// @param cubos @b Cubos main class
+    /// @ingroup tesseratos-file-selector-plugin
+    void fileSelectorPlugin(cubos::engine::Cubos& cubos);
+} // namespace tesseratos

tools/tesseratos/src/tesseratos/main.cpp

@@ -9,6 +9,7 @@
 
 #include "asset_explorer/plugin.hpp"
 #include "debugger/plugin.hpp"
+#include "file_selector/plugin.hpp"
 #include "importer/plugin.hpp"
 #include "scene_editor/plugin.hpp"
 #include "voxel_palette_editor/plugin.hpp"
@@ -38,6 +39,7 @@ int main(int argc, char** argv)
     cubos.plugin(sceneEditorPlugin);
     cubos.plugin(voxelPaletteEditorPlugin);
     cubos.plugin(importerPlugin);
+    cubos.plugin(fileSelectorPlugin);
 
     cubos.startupSystem("configure Assets plugin").tagged(cubos::engine::settingsTag).call([](Settings& settings) {
         settings.setString("assets.io.path", TESSERATOS_ASSETS_FOLDER);