HackStudio: Implement adding a new file to the project

You can now press Ctrl+N to create and add a new file to the project!

DevTools/HackStudio/Project.cpp

@@ -24,13 +24,17 @@ public:
         }
         return {};
     }
-    virtual void update() override {}
+    virtual void update() override
+    {
+        did_update();
+    }
 
 private:
     Project& m_project;
 };
 
-Project::Project(Vector<String>&& filenames)
+Project::Project(const String& path, Vector<String>&& filenames)
+    : m_path(path)
 {
     for (auto& filename : filenames) {
         m_files.append(TextDocument::construct_with_name(filename));
@@ -52,5 +56,26 @@ OwnPtr<Project> Project::load_from_file(const String& path)
         files.append(String::copy(line, Chomp));
     }
 
-    return OwnPtr(new Project(move(files)));
+    return OwnPtr(new Project(path, move(files)));
+}
+
+bool Project::add_file(const String& filename)
+{
+    auto project_file = CFile::construct(m_path);
+    if (!project_file->open(CFile::WriteOnly))
+        return false;
+
+    for (auto& file : m_files) {
+        // FIXME: Check for error here. CIODevice::printf() needs some work on error reporting.
+        project_file->printf("%s\n", file.name().characters());
+    }
+
+    project_file->printf("%s\n", filename.characters());
+
+    if (!project_file->close())
+        return false;
+
+    m_files.append(TextDocument::construct_with_name(filename));
+    m_model->update();
+    return true;
 }

DevTools/HackStudio/Project.h

@@ -12,6 +12,8 @@ class Project {
 public:
     static OwnPtr<Project> load_from_file(const String& path);
 
+    [[nodiscard]] bool add_file(const String& filename);
+
     GModel& model() { return *m_model; }
 
     template<typename Callback>
@@ -22,10 +24,12 @@ public:
         }
     }
 
+
 private:
     friend class ProjectModel;
-    explicit Project(Vector<String>&& files);
+    explicit Project(const String& path, Vector<String>&& files);
 
+    String m_path;
     RefPtr<GModel> m_model;
     NonnullRefPtrVector<TextDocument> m_files;
 };

DevTools/HackStudio/main.cpp

@@ -76,8 +76,22 @@ int main(int argc, char** argv)
     g_text_editor->set_line_wrapping_enabled(true);
     g_text_editor->set_automatic_indentation_enabled(true);
 
-    auto new_action = GAction::create("New", { Mod_Ctrl, Key_N }, GraphicsBitmap::load_from_file("/res/icons/16x16/new.png"), [&](const GAction&) {
+    auto new_action = GAction::create("Add new file to project", { Mod_Ctrl, Key_N }, GraphicsBitmap::load_from_file("/res/icons/16x16/new.png"), [&](const GAction&) {
-        // FIXME: Implement.
+        auto input_box = GInputBox::construct("Enter name of new file:", "Add new file to project", g_window);
+        if (input_box->exec() == GInputBox::ExecCancel)
+            return;
+        auto filename = input_box->text_value();
+        auto file = CFile::construct(filename);
+        if (!file->open((CIODevice::OpenMode)(CIODevice::WriteOnly | CIODevice::MustBeNew))) {
+            GMessageBox::show(String::format("Failed to create '%s'", filename.characters()), "Error", GMessageBox::Type::Error, GMessageBox::InputType::OK, g_window);
+            return;
+        }
+        if (!g_project->add_file(filename)) {
+            GMessageBox::show(String::format("Failed to add '%s' to project", filename.characters()), "Error", GMessageBox::Type::Error, GMessageBox::InputType::OK, g_window);
+            // FIXME: Should we unlink the file here maybe?
+            return;
+        }
+        open_file(filename);
     });
 
     auto open_action = GCommonActions::make_open_action([&](auto&) {