/// <summary>
/// Item is dropped into this cell.
/// </summary>
/// <param name="data"></param>
public void OnDrop(PointerEventData data)
{
if (DadItem.icon != null)
{
DadCell sourceCell = DadItem.sourceCell;
if (sourceCell != this)
{
DadEventDescriptor desc = new DadEventDescriptor();
desc.sourceCell = sourceCell;
desc.destinationCell = this;
if (SendGroupRequest(desc) == true) // Send group request
{
SendCellRequest(desc); // Send cell request
}
StartCoroutine(NotifyOnDragEnd(desc)); // Send notification after drop will be finished
if (desc.cellPermission == true && desc.groupPermission == true) // If drop permitted
{
SwapItems(sourceCell, this); // Swap items between cells
}
}
UpdateMyItem();
UpdateBackgroundState();
sourceCell.UpdateMyItem();
sourceCell.UpdateBackgroundState();
}
}
/// <summary>
/// Send drag and drop information to cell
/// </summary>
/// <param name="desc"> drag and drop event descriptor </param>
private void SendCellNotification(GameObject source, DadEventDescriptor desc)
{
if (source != null && desc != null)
{
// Send message with DragAndDrop info to GameObject
source.SendMessage("OnDadCellEvent", desc, SendMessageOptions.DontRequireReceiver);
}
}
/// <summary>
/// Send drag and drop information to group
/// </summary>
/// <param name="desc"> drag and drop event descriptor </param>
private void SendGroupNotification(GameObject source, DadEventDescriptor desc)
{
if (source != null && desc != null)
{
// Send message with DragAndDrop info to parents GameObjects
source.SendMessageUpwards("OnDadGroupEvent", desc, SendMessageOptions.DontRequireReceiver);
}
}
/// <summary>
/// Wait for event end and send notification to application
/// </summary>
/// <param name="desc"> drag and drop event descriptor </param>
/// <returns></returns>
private IEnumerator NotifyOnDragEnd(DadEventDescriptor desc)
{
// Wait end of drag operation
while (DadItem.draggedItem != null)
{
yield return(new WaitForEndOfFrame());
}
desc.triggerType = TriggerType.DragEnd;
SendGroupNotification(desc.sourceCell.gameObject, desc);
desc.triggerType = TriggerType.DropEnd;
SendGroupNotification(desc.destinationCell.gameObject, desc);
}
/// <summary>
/// Manualy add item into this cell.
/// </summary>
/// <param name="item"> New item </param>
public void AddItem(GameObject item)
{
if (item != null)
{
PlaceItem(item, true);
DadEventDescriptor desc = new DadEventDescriptor();
// Fill event descriptor
desc.triggerType = TriggerType.ItemAdded;
desc.sourceCell = this;
desc.destinationCell = this;
// Send notification about item adding
SendGroupNotification(desc.destinationCell.gameObject, desc);
}
}
/// <summary>
/// Send drag and drop cell request to application
/// </summary>
/// <returns><c>true</c>, if confirm is successfull, <c>false</c> otherwise.</returns>
/// <param name="desc">Desc.</param>
private bool SendCellRequest(DadEventDescriptor desc)
{
bool result = false;
if (desc != null)
{
// To source cell
desc.triggerType = TriggerType.DragCellRequest;
SendCellNotification(desc.sourceCell.gameObject, desc);
// To destination cell
desc.triggerType = TriggerType.DropCellRequest;
SendCellNotification(desc.destinationCell.gameObject, desc);
result = desc.cellPermission;
}
return(result);
}
/// <summary>
/// Send drag and drop group request to application
/// </summary>
/// <param name="desc"> drag and drop event descriptor </param>
/// <returns> result from desc.permission </returns>
private bool SendGroupRequest(DadEventDescriptor desc)
{
//print(17);
bool result = false;
if (desc != null)
{
desc.cellPermission = true;
desc.groupPermission = true;
// To source cell
desc.triggerType = TriggerType.DragGroupRequest;
SendGroupNotification(desc.sourceCell.gameObject, desc);
// To destination cell
desc.triggerType = TriggerType.DropGroupRequest;
SendGroupNotification(desc.destinationCell.gameObject, desc);
result = desc.groupPermission;
}
return(result);
}
/// <summary>
/// Destroy item in this cell
/// </summary>
private void DestroyItem()
{
UpdateMyItem();
GameObject item = GetItem();
if (item != null)
{
DadEventDescriptor desc = new DadEventDescriptor();
// Fill event descriptor
desc.triggerType = TriggerType.ItemWillBeDestroyed;
desc.sourceCell = this;
desc.destinationCell = this;
// Send notification about item destruction
SendGroupNotification(desc.destinationCell.gameObject, desc);
if (item != null)
{
Destroy(item);
}
}
myDadItem = null;
UpdateBackgroundState();
}
