View source for SelectList

By AngryAnt.

== Description ==

Visualises a list of strings or objects overriding ToString and returns the item selected by the user. Clicking a selected item will deselect it.

Optionally, the OnListItemGUI delegate can be used to do custom GUI rendering of list items.

== Component code ==

<csharp>		public static object SelectList( ICollection list, object selected, GUIStyle defaultStyle, GUIStyle selectedStyle )
		{			
			foreach( object item in list )
			{
				if( GUILayout.Button( item.ToString(), ( selected == item ) ? selectedStyle : defaultStyle ) )
				{
					if( selected == item )
					// Clicked an already selected item. Deselect.
					{
						selected = null;
					}
					else
					{
						selected = item;
					}
				}
			}
		
			return selected;
		}
		
		
		
		public delegate bool OnListItemGUI( object item, bool selected, ICollection list );
		
		
		
		public static object SelectList( ICollection list, object selected, OnListItemGUI itemHandler )
		{
			ArrayList itemList;
			
			itemList = new ArrayList( list );
			
			foreach( object item in itemList )
			{
				if( itemHandler( item, item == selected, list ) )
				{
					selected = item;
				}
				else if( selected == item )
				// If we *were* selected, but aren't any more then deselect
				{
					selected = null;
				}
			}
		
			return selected;
		}
</csharp>

== Usage ==

<csharp>	currentSeletion = SelectList( myList, currentSelection, GUI.skin.GetStyle( "Button" ), GUI.skin.GetStyle( "Label" ) );
</csharp>

In this example, myList could be an ArrayList of strings or instances of your own type, returning the desired list label in ToString.