public static bool TryAddItem(DragDropItem item, DragDropTarget target)
{
if (item.attachedTarget != null)
{
return(false);
}
if (!IsChannelMatch(target, item))
{
return(false);
}
if (target.currentItemCount >= target.maxItemCount)
{
return(false);
}
DragDropEventData eventData = new DragDropEventData();
eventData.Reset();
eventData.external = true;
eventData.target = target;
eventData.item = item;
target.OnItemEnter(eventData);
item.OnItemEnter(eventData);
target.OnItemAttach(eventData);
item.OnItemAttach(eventData);
return(true);
}
public static bool TryAddItem(DragDropItem item, DragDropTarget target, bool sendCallback = true)
{
if (item == null || target == null)
{
return(false);
}
if (!(item.isActiveAndEnabled && target.isActiveAndEnabled))
{
return(false);
}
if (item.attachedTarget != null)
{
return(false);
}
if (!IsChannelMatch(target, item))
{
return(false);
}
DragDropEventData eventData = new DragDropEventData(!sendCallback);
eventData.Reset();
eventData.target = target;
eventData.item = item;
target.OnItemAttach(eventData);
item.OnItemAttach(eventData);
return(true);
}
protected bool HandleEventForType(DragDropEventTriggerType type, DragDropEventData eventData)
{
//Debug.LogError(string.Format("name={0} event={1}",name,type));
bool handleEvent = false;
if (callbacks.ContainsKey(type))
{
callbacks[type](eventData);
handleEvent = true;
}
return(handleEvent);
}
public static int RemoveAllItems(DragDropTarget target, bool sendCallback = true)
{
var items = target.GetAllAttachedItems();
DragDropEventData eventData = new DragDropEventData(!sendCallback);
eventData.Reset();
eventData.target = target;
for (int count = items.Count, i = count - 1; i >= 0; --i)
{
DragDropItem item = items[i];
eventData.item = item;
target.OnItemDetach(eventData);
item.OnItemDetach(eventData);
item.OnSetFree(eventData);
}
return(items.Count);
}
public void OnSetFree(DragDropEventData eventData)
{
if (lastTarget && attachBackWhenSetFree)
{
eventData.target = lastTarget;
eventData.target.OnItemAttach(eventData);
OnItemAttach(eventData);
}
else
{
if (fallbackParent)
{
transform.SetParent(fallbackParent, false);
}
HandleEventForType(DragDropEventTriggerType.ItemSetFree, eventData);
}
}
protected bool HandleEventForType(DragDropEventTriggerType type, DragDropEventData eventData)
{
//Debug.LogError(string.Format("name={0} event={1}",name,type));
if (eventData.dummy)
{
return(false);
}
var evt = GetEvent(type);
if (evt != null)
{
evt.Invoke(eventData);
return(true);
}
return(false);
}
internal bool CheckCanAttachItem(DragDropEventData eventData, out DragDropItem replacedItem)
{
replacedItem = null;
if (attachedItems.Count >= maxItemCount)
{
if (replaceItem)
{
replacedItem = attachedItems[0];
return(true);
}
else
{
return(false);
}
}
return(true);
}
public void OnSetFree(DragDropEventData eventData)
{
if (lastTarget && lastTarget.isActiveAndEnabled && !eventData.external)
{
eventData.target = lastTarget;
eventData.target.OnItemAttach(eventData);
OnItemAttach(eventData);
}
else if (fallbackTarget && fallbackTarget.isActiveAndEnabled && !eventData.external)
{
eventData.target = lastTarget;
eventData.target.OnItemAttach(eventData);
OnItemAttach(eventData);
}
else
{
HandleEventForType(DragDropEventTriggerType.ItemSetFree, eventData);
}
}
public static int RemoveAllItems(DragDropTarget target)
{
var items = target.GetAllAttachedItems();
DragDropEventData eventData = new DragDropEventData();
eventData.Reset();
eventData.external = true;
eventData.target = target;
foreach (var item in items)
{
eventData.item = item;
target.OnItemDetach(eventData);
item.OnItemDetach(eventData);
target.OnItemExit(eventData);
item.OnItemExit(eventData);
item.OnSetFree(eventData);
}
return(items.Length);
}
protected bool HandleEventForType(DragDropEventTriggerType type, DragDropEventData eventData)
{
//Debug.LogError(string.Format("name={0} event={1}",name,type));
bool handleEvent = false;
if (csCallbacks.ContainsKey(type))
{
csCallbacks[type](eventData);
handleEvent = true;
}
#if USE_LUA_FRAMEWORK
if (luaCallbacks.ContainsKey(type))
{
luaCallbacks[type].Call(eventData);
handleEvent = true;
}
#endif
return(handleEvent);
}
public static bool TryRemoveItem(DragDropItem item, DragDropTarget target)
{
if (item.attachedTarget == target && target.HasItemAttached(item))
{
DragDropEventData eventData = new DragDropEventData();
eventData.Reset();
eventData.external = true;
eventData.target = target;
eventData.item = item;
target.OnItemDetach(eventData);
item.OnItemDetach(eventData);
target.OnItemExit(eventData);
item.OnItemExit(eventData);
item.OnSetFree(eventData);
return(true);
}
else
{
return(false);
}
}
public static bool TryRemoveItem(DragDropItem item, DragDropTarget target, bool sendCallback = true)
{
if (item == null || target == null)
{
return(false);
}
if (item.attachedTarget == target && target.HasItemAttached(item))
{
DragDropEventData eventData = new DragDropEventData(!sendCallback);
eventData.Reset();
eventData.target = target;
eventData.item = item;
target.OnItemDetach(eventData);
item.OnItemDetach(eventData);
item.OnSetFree(eventData);
return(true);
}
else
{
return(false);
}
}
public void OnItemDetach(DragDropEventData eventData)
{
attachedTarget = null;
HandleEventForType(DragDropEventTriggerType.ItemDetach, eventData);
}
public void OnItemAttach(DragDropEventData eventData)
{
attachedTarget = eventData.target;
transform.SetParent(attachedTarget.targetParent, false);
HandleEventForType(DragDropEventTriggerType.ItemAttach, eventData);
}
public void OnItemDragged(DragDropEventData eventData)
{
HandleEventForType(DragDropEventTriggerType.ItemDrag, eventData);
}
public void OnItemDetach(DragDropEventData eventData)
{
attachedItems.Remove(eventData.item);
HandleEventForType(DragDropEventTriggerType.ItemDetach, eventData);
}
public void OnItemAttach(DragDropEventData eventData)
{
HandleEventForType(DragDropEventTriggerType.ItemAttach, eventData);
attachedItems.Add(eventData.item);
}
public void OnItemEnter(DragDropEventData eventData)
{
HandleEventForType(DragDropEventTriggerType.ItemEnter, eventData);
}
public void OnSetFree(DragDropEventData eventData)
{
HandleEventForType(DragDropEventTriggerType.ItemSetFree, eventData);
}
public void OnClick(DragDropEventData eventData)
{
HandleEventForType(DragDropEventTriggerType.ItemClick, eventData);
}
public void OnItemExit(DragDropEventData eventData)
{
HandleEventForType(DragDropEventTriggerType.ItemExit, currentEventData);
}