public bool Select()
{
if (currentInputItem != null)
{
currentInputItem.Select();
return(true);
}
else
{
currentMenuPage.Select();
}
if (currentMenuPage.ScrollPosition == 0 && pageStack.Count == 0 && showBackOnRoot)
{
Disable();
Exited(this, new EventArgs());
return(true);
}
// if currently on a subpage and user selects back, pop back to parent page.
if (currentMenuPage.ScrollPosition == 0 && pageStack.Count > 0)
{
MenuPage parent = pageStack.Pop() as MenuPage;
currentMenuPage = parent;
ShowCurrentPage();
return(true);
}
int pos = currentMenuPage.ScrollPosition;
MenuItem menuItem = currentMenuPage.MenuItems[pos];
// go to the submenu if children are present
if (menuItem.HasSubItems)
{
pageStack.Push(currentMenuPage);
// currentMenuPage = child.SubMenu;
currentMenuPage = CreateMenuPage(menuItem.SubItems, true);
ShowCurrentPage();
return(true);
}
// if there is a command, notify the subscribers
else if (menuItem.Command != string.Empty)
{
Selected(this, new MenuSelectedEventArgs(menuItem.Command));
return(true);
}
// if there is a type, then let the type handle the input
else if (menuItem.Type != string.Empty)
{
pageStack.Push(currentMenuPage);
isEditMode = true;
// create the new input type
var type = Type.GetType(INPUT_TYPES_NAMESPACE + menuItem.Type);
if (type == null)
{
throw new ArgumentException(menuItem.Type + " was not found");
}
var constructor = type.GetConstructor(new Type[] { });
currentInputItem = constructor.Invoke(new object[] { }) as IMenuInputItem;
// setup callback
currentInputItem.ValueChanged += delegate(object sender, ValueChangedEventArgs e)
{
// set the value and notify the eager listeners
menuItem.Value = e.Value;
ValueChanged(this, new ValueChangedEventArgs(e.ItemID, e.Value));
// reload the parent menu
var parent = pageStack.Pop() as MenuPage;
currentMenuPage = parent;
currentInputItem = null;
ShowCurrentPage();
isEditMode = false;
};
// initialize input mode and get new value
currentInputItem.Init(display);
currentInputItem.GetInput(menuItem.Id, menuItem.Value);
return(true);
}
else
{
return(false);
}
}
public bool SelectCurrentItem()
{
if (_currentMenuPage.ScrollPosition == 0 && _menuLevel.Count == 0 && _showBackOnRoot)
{
this.Disable();
Exited(this, new EventArgs());
return(true);
}
// if currently on a subpage and user selects back, pop back to parent page.
if (_currentMenuPage.ScrollPosition == 0 && _menuLevel.Count > 0)
{
MenuPage parent = _menuLevel.Pop() as MenuPage;
_currentMenuPage = parent;
RenderCurrentMenuPage();
return(true);
}
int pos = _currentMenuPage.ScrollPosition;
MenuItem child = ((MenuItem)_currentMenuPage.MenuItems[pos]);
// go to the submenu if children are present
if (child.SubMenu.MenuItems.Count > 0)
{
_menuLevel.Push(_currentMenuPage);
_currentMenuPage = child.SubMenu;
RenderCurrentMenuPage();
return(true);
}
// if there is a command, notify the subscribers
else if (child.Command != string.Empty)
{
Selected(this, new MenuSelectedEventArgs(child.Command));
return(true);
}
// if there is a type, then let the type handle the input
else if (child.Type != string.Empty)
{
// preserve current menu state and remove handlers
if (_encoder != null)
{
_encoder.Rotated -= HandlEncoderRotation;
}
else
{
_buttonPrevious.Clicked -= HandleButtonPrevious;
_buttonNext.Clicked -= HandleButtonNext;
}
_buttonSelect.Clicked -= HandleEncoderClick;
_menuLevel.Push(_currentMenuPage);
_isEditMode = true;
// create the new input type
var type = Type.GetType(INPUT_TYPES_NAMESPACE + child.Type);
if (type == null)
{
throw new ArgumentException(child.Type + " was not found");
}
var constructor = type.GetConstructor(new Type[] { });
IMenuInputItem inputItem = constructor.Invoke(new object[] { }) as IMenuInputItem;
// setup callback
inputItem.ValueChanged += delegate(object sender, ValueChangedEventArgs e)
{
// set the value and notify the eager listeners
child.Value = e.Value;
ValueChanged(this, new ValueChangedEventArgs(e.ItemID, e.Value));
// setup handlers again
if (_encoder != null)
{
_encoder.Rotated += HandlEncoderRotation;
}
else
{
_buttonPrevious.Clicked += HandleButtonPrevious;
_buttonNext.Clicked += HandleButtonNext;
}
_buttonSelect.Clicked += HandleEncoderClick;
// reload the parent menu
MenuPage parent = _menuLevel.Pop() as MenuPage;
_currentMenuPage = parent;
RenderCurrentMenuPage();
_isEditMode = false;
};
// initialize input mode and get new value
if (_encoder != null)
{
inputItem.Init(_display, _encoder, _buttonSelect);
}
else
{
inputItem.Init(_display, _buttonNext, _buttonPrevious, _buttonSelect);
}
inputItem.GetInput(child.ItemID, child.Value);
return(true);
}
else
{
return(false);
}
}