/// <summary>
/// Add item to grid at position.
/// </summary>
/// <param name="item"><c>GridspaceItem</c> to add.</param>
/// <param name="position">Position to add.</param>
/// <returns>true if adding succesfully, otherwise false.</returns>
public bool AddItemToGrid(GridspaceItem item, GridPosition position)
{
if (item == null || position == null || position.X < 0 || position.Y < 0)
{
return(false);
}
if (item.TypeOfItem != this.AcceptedItemType)
{
return(false);
}
if (Size.X < position.X + item.Size.X || Size.Y < position.Y + item.Size.Y)
{
return(false);
}
if (!ValidateGridValues(position, item.Size, false))
{
return(false);
}
itemsInGrid.Add(item, position);
SetGridValues(position, item.Size, true);
return(true);
}
/// <summary>
/// Remove item from grid.
/// </summary>
/// <param name="item"><c>GridspaceItem</c> to remove.</param>
/// <returns>true if item is found inside grid and succesfully removed, otherwise false.</returns>
public bool RemoveItemFromGrid(GridspaceItem item)
{
if (!itemsInGrid.ContainsKey(item))
{
return(false);
}
GridPosition position = itemsInGrid[item];
itemsInGrid.Remove(item);
SetGridValues(position, item.Size, false);
return(true);
}
/// <summary>
/// Move item inside grid from old position to new.
/// </summary>
/// <param name="item">Item to move.</param>
/// <param name="newPosition">Position where to move.</param>
/// <returns>true if move operation succesfull, otherwise false.</returns>
public bool MoveItemInside(GridspaceItem item, GridPosition newPosition)
{
if (newPosition == null || !itemsInGrid.ContainsKey(item))
{
return(false);
}
var oldPosition = itemsInGrid[item];
RemoveItemFromGrid(item);
if (!AddItemToGrid(item, newPosition))
{
AddItemToGrid(item, oldPosition);
return(false);
}
return(true);
}