NSMenu.c3

// NSMenu.c3
module objc_foundation @if(env::DARWIN) @link(env::DARWIN, "Cocoa.framework");
import std::io;

// Menu item states
enum NSMenuItemState : int {
//    MIXED = -1,
    OFF,
    ON
}

// Create a new menu
fn void* nsMenu_init(char* title) {
    void* menuClass = objc_GetClass("NSMenu");
    if (menuClass == null) return null;
    
    void* menu = objc_Alloc(menuClass);
    if (menu == null) return null;
    
    void* titleStr = createNSString(title);
    if (titleStr == null) {
        objc_release(menu);
        return null;
    }
    
    void* sel = sel_registerName("initWithTitle:");
    void* result = ((MsgSend1)&objc_msgSend)(menu, sel, titleStr);
    objc_release(titleStr);
    return result;
}

// Create a menu item
fn void* nsMenuItem_init(char* title, char* action, char* keyEquivalent) {
    void* itemClass = objc_GetClass("NSMenuItem");
    if (itemClass == null) return null;
    
    void* item = objc_Alloc(itemClass);
    if (item == null) return null;
    
    void* titleStr = createNSString(title);
    void* keyStr = createNSString(keyEquivalent);
    
    if (titleStr == null || keyStr == null) {
        if (titleStr != null) objc_release(titleStr);
        if (keyStr != null) objc_release(keyStr);
        objc_release(item);
        return null;
    }
    
    void* sel = sel_registerName("initWithTitle:action:keyEquivalent:");
    void* actionSel = action ? sel_registerName(action) : null;
    void* result = ((MsgSend3)&objc_msgSend)(item, sel, titleStr, actionSel, keyStr);
    
    objc_release(titleStr);
    objc_release(keyStr);
    return result;
}

// Add item to menu
fn void nsMenu_addItem(void* menu, void* item) {
    if (menu == null || item == null) return;
    void* sel = sel_registerName("addItem:");
    ((MsgSend1)&objc_msgSend)(menu, sel, item);
}

// Add separator
fn void nsMenu_addSeparator(void* menu) {
    if (menu == null) return;
    void* sel = sel_registerName("addItem:");
    void* separator = nsMenuItem_init("-", null, "");
    if (separator != null) {
        ((MsgSend1)&objc_msgSend)(menu, sel, separator);
        objc_release(separator);
    }
}

// Set menu as application main menu
fn void nsApp_setMainMenu(void* menu) {
    if (menu == null) return;
    void* app = nsApp_sharedApplication();
    if (app == null) return;
    
    void* sel = sel_registerName("setMainMenu:");
    ((MsgSend1)&objc_msgSend)(app, sel, menu);
}

// Create standard application menu
fn void* nsMenu_createApplicationMenu(char* appName) {
    void* mainMenu = nsMenu_init("");
    if (mainMenu == null) return null;
    
    // Application menu
    void* appMenu = nsMenu_init(appName);
    if (appMenu == null) {
        objc_release(mainMenu);
        return null;
    }
    
    // About item
    void* aboutItem = nsMenuItem_init("About", "orderFrontStandardAboutPanel:", "");
    if (aboutItem != null) {
        nsMenu_addItem(appMenu, aboutItem);
        objc_release(aboutItem);
    }
    
    nsMenu_addSeparator(appMenu);
    
    // Quit item
    void* quitItem = nsMenuItem_init("Quit", "terminate:", "q");
    if (quitItem != null) {
        nsMenu_addItem(appMenu, quitItem);
        objc_release(quitItem);
    }
    
    // Add app menu to main menu
    void* appMenuItem = nsMenuItem_init("", null, "");
    if (appMenuItem != null) {
        ((MsgSend1)&objc_msgSend)(appMenuItem, sel_registerName("setSubmenu:"), appMenu);
        nsMenu_addItem(mainMenu, appMenuItem);
        objc_release(appMenuItem);
    }
    
    objc_release(appMenu);
    return mainMenu;
}