/// <summary>
/// gets the down value for the corresponding zoom level
/// from the data tier and relays it to the gui
/// </summary>
/// <param name="zoom"></param>
/// <returns>
/// returns num tiles down or -1 if failure
/// aswell as a error message via reference
/// </returns>
public int GetNumTilesDown(int zoom)
{
try
{
return(m_tmData.GetNumTilesDown(zoom));
}
catch (FaultException <DataServerFault> )
{
throw new FaultException <BizServerFault>(new BizServerFault("TMBizControllerImpl.GetNumTilesDown", "Error In Data Server"));
}
catch (CommunicationException)
{
throw new FaultException <BizServerFault>(new BizServerFault("TMBizControllerImpl.GetNumTilesDown", "Error communicating with data server"));
}
}
// 1) Calling the functions at data tier. And getting the return value of data tier's function
// 2) Call goes to the ITMDataController(Interface)
// 3) From the interface the call is diverted to TMDataControllerImpl class
// 4) This ensures gui clients does not have direct access to the data tier
public int GetNumTilesDown(int zoom)
{
int ret = 0;
try
{
ret = m_data.GetNumTilesDown(zoom);
}
catch (CommunicationException)
{
System.Console.WriteLine("Error : The data tier program exited implicitly");
}
return(ret);
}
private void btnDown_Click(object sender, RoutedEventArgs e)
{
y++; //increases the x axis by 1 unit per click
if (y < 0 || y == 0)
{
y = 0;
load = true;
refreshTiles();
}
else if (y < m_tmData.GetNumTilesDown(zoomValue))
{
load = true;
refreshTiles();
}
else
{
y = m_tmData.GetNumTilesDown(zoomValue) - 1;
load = true;
refreshTiles();
}
}
//gets max vertical tiles
public int GetNumTilesDown(int zoom)
{
return(m_tmData.GetNumTilesDown(zoom));
}