Initialisation

libraries/MenuBackend/examples/HelloMenu/HelloMenu.pde

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+/**
+ * HelloMenu
+ * by BREVIG http://alexanderbrevig.com
+ * 
+ * This is the structure of the modelled menu
+ * 
+ * Settings
+ *   Pin
+ *   Debug
+ * Options
+ *   Delay (D)
+ *     100 ms
+ *     200 ms
+ *     300 ms
+ *     400 ms
+ */
+
+#include <MenuBackend.h>
+
+//this controls the menu backend and the event generation
+MenuBackend menu = MenuBackend(menuUseEvent,menuChangeEvent);
+  //beneath is list of menu items needed to build the menu
+  MenuItem settings   = MenuItem(menu, "Settings", 1);
+    MenuItem pin      = MenuItem(menu, "Pin", 2);
+    MenuItem debug    = MenuItem(menu, "Debug", 2);
+  MenuItem options    = MenuItem(menu, "Options", 1);
+    MenuItem setDelay = MenuItem(menu, "Delay",'D', 2);
+      MenuItem d100   = MenuItem(menu, "100 ms", 3);
+      MenuItem d200   = MenuItem(menu, "200 ms", 3);
+      MenuItem d300   = MenuItem(menu, "300 ms", 3);
+      MenuItem d400   = MenuItem(menu, "400 ms", 3);
+
+//this function builds the menu and connects the correct items together
+void menuSetup()
+{
+  Serial.println("Setting up menu...");
+  //add the file menu to the menu root
+  menu.getRoot().add(settings); 
+    //setup the settings menu item
+    settings.addAfter(options); 
+    options.addAfter(settings); 
+    
+    settings.addLeft(settings); //loop back if left on settings
+    settings.addRight(pin);     //chain settings to  pin on right
+      debug.addLeft(settings);  //also go to settings left for debug
+      //we want looping both up and down
+      pin.addBefore(debug);
+      pin.addAfter(debug);
+      debug.addBefore(pin);
+      debug.addAfter(pin);
+    
+    options.addLeft(options);   //loop back if left on settings
+    options.addRight(setDelay); //chain options to delay on right
+      setDelay.addRight(d100);
+        d100.addBefore(d100);   //loop to d400 
+        d100.addAfter(d200);
+        d200.addAfter(d300);
+        d300.addAfter(d400);
+        d400.addAfter(d100);    //loop back to d100
+        //we want left to always be bak to delay
+        d100.addLeft(setDelay);
+        d200.addLeft(setDelay);
+        d300.addLeft(setDelay);
+        d400.addLeft(setDelay);
+}
+
+/*
+  This is an important function
+  Here all use events are handled
+  
+  This is where you define a behaviour for a menu item
+*/
+void menuUseEvent(MenuUseEvent used)
+{
+  Serial.print("Menu use ");
+  Serial.println(used.item.getName());
+  
+  if (used.item.isEqual(setDelay)) //comparison agains a known item
+  {
+    Serial.println("menuUseEvent found Delay (D)");
+  }
+}
+
+/*
+  This is an important function
+  Here we get a notification whenever the user changes the menu
+  That is, when the menu is navigated
+*/
+void menuChangeEvent(MenuChangeEvent changed)
+{
+  Serial.print("Menu change ");
+  Serial.print(changed.from.getName());
+  Serial.print(" ");
+  Serial.println(changed.to.getName());
+}
+
+void setup()
+{
+  Serial.begin(9600);
+  
+  menuSetup();
+  Serial.println("Starting navigation:\r\nUp: w   Down: s   Left: a   Right: d   Use: e");
+  
+  //fire Delay : menu.use('D');
+  //bail back to Options by moving up one logical level after a D : menu.moveRelativeLevels(-1);
+}
+
+void loop()
+{
+  if (Serial.available()) 
+  {
+    byte read = Serial.read();
+    switch (read) 
+    {
+      case 'w': menu.moveUp(); break;
+      case 's': menu.moveDown(); break;
+      case 'd': menu.moveRight(); break;
+      case 'a': menu.moveLeft(); break;
+      case 'e': menu.use(); break;
+    }
+  }
+}
+

libraries/MenuBackend/examples/HelloMenu/printresult.txt

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+Setting up menu...
+Starting navigation (see source for description):
+Menu change MenuRoot File
+Menu change File New
+Menu change New Open
+Menu change Open Examples
+Menu change Examples ArduinoISP
+Menu use ArduinoISP
+menuUseEvent found ArduinoISP
+Menu change ArduinoISP Examples
+Menu change Examples Open
+Menu change Open New
+Menu change New File
+Menu change File Edit
+Menu change Edit Sketch
+Menu change Sketch Verify
+Menu use Verify
+Menu change Verify Sketch
+Menu change Sketch Edit
+Menu change Edit File
+Menu change File New
+Menu use New
+Menu use Verify
+menuUseEvent found Verify (V)