1 files changed, 145 insertions, 0 deletions
diff --git a/source/file.cpp b/source/file.cpp
new file mode 100644
index 0000000..d82f0ec
--- /dev/null
+++ b/source/file.cpp
@@ -0,0 +1,145 @@
+/**
+ * @file file.cpp
+ * @brief Contains code for file-management-related UI elements and logic.
+ *
+ * Copyright (C) 2021 Clyne Sullivan
+ *
+ * Distributed under the GNU GPL v3 or later. You should have received a copy of
+ * the GNU General Public License along with this program.
+ * If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include "imgui.h"
+#include "backends/imgui_impl_sdl.h"
+#include "backends/imgui_impl_opengl2.h"
+#include "ImGuiFileDialog.h"
+#include "TextEditor.h"
+
+#include "stmdsp_code.hpp"
+
+#include <cstdlib>
+#include <filesystem>
+#include <fstream>
+#include <iostream>
+#include <sstream>
+#include <string>
+#include <vector>
+
+extern TextEditor editor;
+extern std::string statusMessage;
+
+enum class FileAction {
+    None,
+    Open,
+    Save,
+    SaveAs
+};
+static FileAction fileAction = FileAction::None;
+static std::string fileCurrentPath;
+static std::vector<std::filesystem::path> fileTemplateList;
+
+static void saveCurrentFile()
+{
+    if (std::ofstream ofs (fileCurrentPath, std::ios::binary); ofs.good()) {
+        const auto& text = editor.GetText();
+        ofs.write(text.data(), text.size());
+        statusMessage = "Saved.";
+    }
+}
+
+static void openCurrentFile()
+{
+    if (std::ifstream ifs (fileCurrentPath); ifs.good()) {
+        std::ostringstream sstr;
+        sstr << ifs.rdbuf();
+        editor.SetText(sstr.str());
+    }
+}
+
+void fileScanTemplates()
+{
+    auto path = std::filesystem::current_path() / "templates";
+    for (const auto& file : std::filesystem::recursive_directory_iterator{path})
+        fileTemplateList.push_back(file.path());
+}
+
+void fileRenderMenu()
+{
+    if (ImGui::BeginMenu("File")) {
+        if (ImGui::MenuItem("New")) {
+            // TODO modified?
+            fileCurrentPath.clear();
+            editor.SetText(stmdsp::file_content);
+            statusMessage = "Ready.";
+        }
+
+        if (ImGui::MenuItem("Open")) {
+            fileAction = FileAction::Open;
+            ImGuiFileDialog::Instance()->OpenDialog(
+                "ChooseFileDlgKey", "Choose File", ".cpp", ".");
+        }
+
+        if (ImGui::BeginMenu("Open Template")) {
+            for (const auto& file : fileTemplateList) {
+                if (ImGui::MenuItem(file.filename().c_str())) {
+                    fileCurrentPath = file.string();
+                    openCurrentFile();
+
+                    // Treat like new file.
+                    fileCurrentPath.clear();
+                }
+            }
+
+            ImGui::EndMenu();
+        }
+
+        if (ImGui::MenuItem("Save")) {
+            if (fileCurrentPath.size() > 0) {
+                saveCurrentFile();
+            } else {
+                fileAction = FileAction::SaveAs;
+                ImGuiFileDialog::Instance()->OpenDialog(
+                    "ChooseFileDlgKey", "Choose File", ".cpp", ".");
+            }
+        }
+
+        if (ImGui::MenuItem("Save As")) {
+            fileAction = FileAction::SaveAs;
+            ImGuiFileDialog::Instance()->OpenDialog(
+                "ChooseFileDlgKey", "Choose File", ".cpp", ".");
+        }
+
+        if (ImGui::MenuItem("Quit")) {
+            extern bool done;
+            done = true;
+        }
+
+        ImGui::EndMenu();
+    }
+}
+
+void fileRenderDialog()
+{
+    if (ImGuiFileDialog::Instance()->Display("ChooseFileDlgKey")) {
+        if (ImGuiFileDialog::Instance()->IsOk()) {
+            std::string filePathName = ImGuiFileDialog::Instance()->GetFilePathName();
+
+            switch (fileAction) {
+            case FileAction::None:
+                break;
+            case FileAction::Open:
+                fileCurrentPath = filePathName;
+                openCurrentFile();
+                statusMessage = "Ready.";
+                break;
+            case FileAction::SaveAs:
+                fileCurrentPath = filePathName;
+                saveCurrentFile();
+                break;
+            }
+        }
+        
+        ImGuiFileDialog::Instance()->Close();
+    }
+}
+