private void Load_Click(object sender, RoutedEventArgs e)
{
//Note: It may required to run Visual Studio in administrator mode fro filestream to work
FileStream f = new FileStream("C:/History.xml", FileMode.Open, FileAccess.Read);
DataContractSerializer sz = new DataContractSerializer(typeof(BrowseHistory));
History = (BrowseHistory)sz.ReadObject(f);
f.Close();
m_biz.SetFullHistory(History);
int currentzoom = (int)slider.Value;
HE = m_biz.GetCurrHistEntry();
xaxis = HE.x;
yaxis = HE.y;
if (currentzoom != HE.zoom)
{
slideraddhistent = 0;
slider.Value = HE.zoom;
}
else
{
loader();
}
}
public HistEntry GetCurrHistEntry()
{
int index = browseH.CurrEntryIndex;
HistEntry h = browseH.History[index];
return(h);
}
/// <summary>
/// HistForward
/// sets zoom,x,y to next hist entry
/// </summary
/// <param name="x"></param>
/// <param name="y"></param>
/// <param name="zoom"></param>
public void HistForward(out int x, out int y, out int zoom)
{
HistEntry entry = m_hist.GetHistForward();
x = entry.X;
y = entry.Y;
zoom = entry.Zoom;
}
/// <summary>
/// GetCurrHistEntry
/// get x, y and zoom from the current history entry
/// </summary>
/// <param name="x"></param>
/// <param name="y"></param>
/// <param name="zoom"></param>
public void GetCurrHistEntry(out int x, out int y, out int zoom)
{
HistEntry entry = m_hist.GetCurrHist();
x = entry.X;
y = entry.Y;
zoom = entry.Zoom;
}
//Adds history to the list when user navigates through tiles
public void AddHistEntry(int x, int y, int zoom)
{
try
{
HistEntry he = new HistEntry(x, y, zoom);
m_hist.AddHistEntry(he);
}
catch (NullReferenceException)
{
System.Console.WriteLine("Attempt for saving history just after loadin tile!");
}
}
public void AddHistEntry(HistEntry h)
{
//browseH.CurrEntryIndex = browseH.CurrEntryIndex + 1;
browseH.CurrEntryIndex++;
browseH.History.Insert(browseH.CurrEntryIndex, h);
Console.WriteLine("AddHist: " + browseH.CurrEntryIndex);
Console.WriteLine("AddHist Count: " + browseH.History.Count);
while (browseH.History.Count > browseH.CurrEntryIndex + 1)
{
browseH.History.RemoveAt(browseH.History.Count - 1);
}
}
public void AddHistEntry(HistEntry hist)
{
if (CurrEntryIdx < History.Count - 1)
{
//Removing previous history entries when user calls HistBack() Several times and then add a new entry
//CurrEntryIndex + 1 - is becuase we need to save only the current entry as the history left when user navigates through tiles again
this.History.RemoveRange(CurrEntryIdx + 1, History.Count - (CurrEntryIdx + 1));
}
this.History.Add(hist);
//Helps to get the next available index of the list
CurrEntryIdx++;
}
public HistEntry HistForward()
{
if (browseH.CurrEntryIndex < browseH.History.Count - 1)
{
browseH.CurrEntryIndex = browseH.CurrEntryIndex + 1;
HistEntry h = browseH.History[browseH.CurrEntryIndex];
Console.WriteLine("Forward: " + browseH.CurrEntryIndex);
Console.WriteLine("Forward Count: " + browseH.History.Count);
return(h);
}
else
{
return(null);
}
}
public HistEntry HistBack()
{
if (browseH.CurrEntryIndex > 0)
{
browseH.CurrEntryIndex = browseH.CurrEntryIndex - 1;
HistEntry h = browseH.History[browseH.CurrEntryIndex];
Console.WriteLine("Back: " + browseH.CurrEntryIndex);
Console.WriteLine("Back Count: " + browseH.History.Count);
return(h);
}
else
{
return(null);
}
}
public HistEntry GetCurrHistEntry()
{
HistEntry x = null;
try
{
x = History[CurrEntryIdx];
}
//If Load tile button have not clicked already
catch (ArgumentOutOfRangeException)
{
System.Console.WriteLine();
}
return(x);
}
private void Back_Click(object sender, RoutedEventArgs e)
{
int curridx = m_biz.GetCurrentIndex();
if (curridx > 0)
{
int currentzoom = (int)slider.Value;
HE = m_biz.HistBack();
xaxis = HE.x;
yaxis = HE.y;
if (currentzoom != HE.zoom)
{
slideraddhistent = 0;
slider.Value = HE.zoom;
}
else
{
loader();
}
}
}
public HistEntry GetCurrHistEntry()
{
His = BH.BHGetCurrHistEntry();
return(His);
}
public HistEntry HistForward()
{
His = BH.BHHistForward();
return(His);
}
public HistEntry HistBack()
{
His = BH.BHHistBack();
return(His);
}
