Control.cs

Siirry tämän tiedoston dokumentaatioon.

using System.Collections.Generic;
using Jypeli.Controls;
 
namespace Jypeli
{
    public partial class Widget
    {
        private ListenContext _context = new ListenContext();
 
        internal List<Listener> associatedListeners = new List<Listener>();
 
        public ListenContext ControlContext { get { return _context; } }
 
        public bool IsModal { get; set; }
 
        public bool CapturesMouse { get; protected set; }
        public bool IsCapturingMouse
        {
            get
            {
                // A widget IsCapturingMouse if either:
                //     it CapturesMouse and is under the cursor
                // or:
                //     one of its children IsCapturingMouse.
 
                if (CapturesMouse && Game.Mouse.IsCursorOn(this))
                    return true;
 
                foreach (var o in Objects)
                {
                    if (o is Widget w && w.IsCapturingMouse)
                        return true;
                }
 
                return false;
            }
        }
 
        public void InitControl()
        {
            if ( ControlContext == null || ControlContext.IsDestroyed )
                _context = new Controls.ListenContext();
 
            Objects.ItemAdded += InitChildContext;
            Objects.ItemRemoved += ResetChildContext;
 
            Removed += RemoveListeners;
        }
 
        private void InitChildContext( GameObject child )
        {
            ControlContexted ctxChild = child as ControlContexted;
            if ( ctxChild == null ) return;
            ctxChild.ControlContext.dynamicParent = true;
            ctxChild.ControlContext.parentObject = this;
        }
 
        private void ResetChildContext( GameObject child )
        {
            ControlContexted ctxChild = child as ControlContexted;
            if ( ctxChild == null ) return;
            ctxChild.ControlContext.parentObject = null;
            ctxChild.ControlContext.parentContext = null;
        }
 
        private void RemoveListeners()
        {
            associatedListeners.ForEach(l => l.Destroy());
            associatedListeners.Clear();
        }
    }
}