// Return string of rendered menu
public string Draw(int textWidth = 40, int textHeight = 7)
{
// long clock = DateTime.Now.Ticks; // used to scroll menu text if it is too wide
string output = "";
var currentItem = this.path.Peek();
if (currentItem == null)
{
throw new Exception("Menu: currentItem is null");
}
output += this.breadcrumbs() + "\n\n";
int selected = currentItem.children.IndexOf(this.selectedItem);
int start = 0;
int length = currentItem.children.Count;
if (selected > (textHeight - 2) / 2)
{
start = selected - (textHeight - 2) / 2;
}
if (length > textHeight - 2)
{
length = textHeight - 2;
}
if (start + length > currentItem.children.Count)
{
start = currentItem.children.Count - (textHeight - 2);
length = textHeight - 2;
}
if (start < 0)
{
start = 0;
}
for (int n = start; (n < (start + length) && n < currentItem.children.Count); n++)
{
EasyMenuItem child = currentItem.children[n];
if (child == this.selectedItem)
{
// Todo, if text is too wide, have it scroll horizontally
output += "> " + child.GetText() + " <\n";
}
else
{
output += child.GetText() + "\n";
}
}
return(output);
}
/*** Public API ***/
// Move cursor up
public void Up()
{
int location = this.path.Peek().children.IndexOf(this.selectedItem) - 1;
if (location >= 0)
{
this.selectedItem = this.path.Peek().children[location];
}
}
// Back action
public void Back()
{
if (this.path.Count > 1)
{
this.path.Pop();
this.selectedItem = this.path.Peek().children[0];
}
}
// Move cursor down
public void Down()
{
int location = this.path.Peek().children.IndexOf(this.selectedItem) + 1;
if (location < this.path.Peek().children.Count)
{
this.selectedItem = this.path.Peek().children[location];
}
}
// Choose action
public void Choose()
{
if (this.selectedItem.doAction())
{
if (this.selectedItem.children.Count > 0) // go to sub menu if it exists
{
this.path.Push(this.selectedItem);
this.selectedItem = this.path.Peek().children[0];
}
}
}
public bool toggleDoor(EasyMenuItem item)
{
EasyBlock door = Blocks.Named(item.Text).FindOrFail(item.Text + " not found!").GetBlock(0);
if(door.Open())
door.ApplyAction("Open_Off");
else
door.ApplyAction("Open_On");
return false; // don't go to a sub-menu if one is available
}
/*** Constructors ***/
public EasyMenu(string text, EasyMenuItem[] children = null)
{
this.path = new Stack <EasyMenuItem>();
this.path.Push(new EasyMenuItem(text, children));
if (this.path.Peek().children.Count > 0)
{
this.selectedItem = this.path.Peek().children[0];
}
}
// True means go into sub menu if it exists, false means stay where you are
public bool doAction(EasyMenuItem item)
{
if (this.chooseAction == null)
{
return(true);
}
else
{
return(this.chooseAction(item));
}
}
public bool toggleDoor(EasyMenuItem item)
{
EasyBlock door = Blocks.Named(item.Text).FindOrFail(item.Text + " not found!").GetBlock(0);
if (door.Open())
{
door.ApplyAction("Open_Off");
}
else
{
door.ApplyAction("Open_On");
}
return(false); // don't go to a sub-menu if one is available
}
public int CompareTo(object obj)
{
if (obj == null)
{
return(1);
}
EasyMenuItem otherItem = obj as EasyMenuItem;
if (otherItem != null)
{
return(this.GetText().CompareTo(otherItem.GetText()));
}
else
{
throw new ArgumentException("Object is not a EasyMenuItem");
}
}
/*** Methods ***/
// Default text action which just returns the static text
private string get_text(EasyMenuItem item)
{
return(this.Text);
}
public bool playSound(EasyMenuItem item)
{
speaker.ApplyAction("PlaySound");
return(false);
}
public string doorStatus(EasyMenuItem item)
{
EasyBlock door = Blocks.Named(item.Text).GetBlock(0);
return(item.Text + ": " + ((door.Open())?"Open":"Closed"));
}
public bool playSound(EasyMenuItem item)
{
speaker.ApplyAction("PlaySound");
return false;
}
public string doorStatus(EasyMenuItem item)
{
EasyBlock door = Blocks.Named(item.Text).GetBlock(0);
return item.Text + ": " + ((door.Open())?"Open":"Closed");
}
// Get menu text
public string GetText(EasyMenuItem item)
{
return(this.textAction(item));
}