Merge pull request #140 from teiram/menu-page-plugins

Menu Page plugins

main.c

@@ -146,10 +146,11 @@ int main(void)
     DISKLED_ON;
 
     data_io_init();
+    page_plugin_init();
     c64files_init();
     snes_init();
     zx_init();
-    serial_sink_init();
+    serial_sink_init();
     Timer_Init();
 
     USART_Init(115200);

menu-8bit.c

@@ -48,6 +48,38 @@ static unsigned char selected_drive_slot;
 static RomType romtype;
 static char data_processor_id[4]; //Max 3 chars, plus null at end
 
+static menu_page_plugin_t* PAGE_PLUGINS[MAX_PAGE_PLUGINS];
+static char non_supported_plugin[] = "Menu plugin XXX not found";
+
+void page_plugin_init() {
+	memset(PAGE_PLUGINS, 0, sizeof(PAGE_PLUGINS));
+}
+
+char page_plugin_add(menu_page_plugin_t *plugin) {
+	if (plugin)	{
+		for (int i = 0; i < MAX_PAGE_PLUGINS; i++) {
+			if (!PAGE_PLUGINS[i]) {
+				PAGE_PLUGINS[i] = plugin;
+				return 0;
+			}
+		}
+	}
+	return -1;
+}
+
+static menu_page_plugin_t *get_page_plugin(const char *plugin_id) {
+	for (int i = 0; i < MAX_PAGE_PLUGINS; i++) {
+		if (PAGE_PLUGINS[i]) {
+			if (PAGE_PLUGINS[i]->id && strncmp(PAGE_PLUGINS[i]->id, plugin_id, 3) == 0) {
+				return PAGE_PLUGINS[i];
+			}
+		} else {
+			break;
+		}
+	}
+	return NULL;
+}
+
 static void substrcpy(char *d, char *s, char idx) {
 	char p = 0;
 
@@ -250,6 +282,26 @@ static char GetMenuItem_8bit(uint8_t idx, char action, menu_item_t *item) {
 				item->newpage = getIdx(p);
 			} else
 				return 0;
+		} else if (p[2] == 'p') {
+			if (action == MENU_ACT_GET) {
+				s[0] = '\x19';
+				substrcpy(s + 1, p, 3);
+			} else if (action == MENU_ACT_SEL) {
+				char page_plugin_id[4];
+				char page_plugin_arg1[8];
+				char page_plugin_arg2[8];
+				substrcpy(page_plugin_id, p + 3, 0);
+				substrcpy(page_plugin_arg1, p, 1);
+				substrcpy(page_plugin_arg2, p, 2);
+				menu_debugf("Executing Page plugin: %s with args %s, %s\n", page_plugin_id, page_plugin_arg1, page_plugin_arg2);
+				menu_page_plugin_t *plugin = get_page_plugin(page_plugin_id);
+				if (plugin) {
+					plugin->init_menu(page_plugin_arg1, page_plugin_arg2);
+				} else {
+					strncpy(non_supported_plugin + 12, page_plugin_id, 3);
+					ErrorMessage(non_supported_plugin, 3);
+				}
+			}
 		} else {
 			// 'P' is a prefix fo F,S,O,T,R
 			page = getIdx(p);

menu-8bit.h

@@ -18,6 +18,17 @@
 #ifndef MENU_8BIT_H
 #define MENU_8BIT_H
 
+#define MAX_PAGE_PLUGINS 10
+
+typedef struct {
+    char id[4];
+    void (*init_menu)(const char *arg1, const char *arg2);
+} menu_page_plugin_t;
+
+void page_plugin_init();
+char page_plugin_add(menu_page_plugin_t *plugin);
+
+
 void Setup8bitMenu();
 
 #endif