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using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.IO;
using System.Windows.Media.Imaging;
namespace BookReader
{
internal class BaseBook : IBook
{
#region -----------------constructors-----------------
public BaseBook()
{
}
public BaseBook(string filePath)
{
_filePath = filePath;
RaisePropetyChanged("FilePath");
RaisePropetyChanged("FileName");
}
#endregion
#region -----------------properties-----------------
private ImageCache _Cache = new ImageCache();
public ImageCache Cache
{
get { if (_Cache == null) _Cache = new ImageCache(); return _Cache; }
set { _Cache = value; }
}
private string _filePath = string.Empty;
public string FilePath
{
get { return _filePath; }
set { _filePath = value; }
}
[NonSerialized()]
private IBookItem _CurrentPage = null;
public IBookItem CurrentPage
{
get { return _CurrentPage; }
set { _CurrentPage = value; }
}
private List<IBookItem> _Pages = new List<IBookItem>();
public List<IBookItem> Pages
{
get { if (_Pages == null) _Pages = new List<IBookItem>(); return _Pages; }
set { _Pages = value; }
}
private string _Bookmark = string.Empty;
public string Bookmark
{
get { return _Bookmark; }
set { _Bookmark = value; RaisePropetyChanged("Bookmark"); }
}
private bool _IsRead= false;
public bool IsRead
{
get { return _IsRead; }
set { _IsRead = value; RaisePropetyChanged("IsRead"); }
}
private BitmapImage _Cover = null;
public BitmapImage Cover
{
get { return _Cover; }
set { _Cover = value; RaisePropetyChanged("Cover"); }
}
public string FileName
{
get
{
return Path.GetFileName(this._filePath);
}
}
private int _NbPages;
public int NbPages
{
get { return _NbPages; }
set { _NbPages = value; }
}
private long _Size;
public long Size
{
get { return _Size; }
set { _Size = value; }
}
#endregion
#region -----------------loading/unloading-----------------
virtual public void Load()
{
_CurrentPage = Pages[0];
}
virtual public void UnLoad()
{
Pages.Clear();
Cache.Clear();
}
#endregion
#region -----------------virtual's-----------------
virtual public BitmapImage GetCurrentPageImage()
{
throw new NotSupportedException();
}
#endregion
#region -----------------bookmark-----------------
public void SetMark()
{
Bookmark = _CurrentPage.FilePath;
}
public void GotoMark()
{
if (!string.IsNullOrEmpty(_Bookmark))
{
foreach (IBookItem pg in Pages)
{
if( pg.FilePath == _Bookmark )
_CurrentPage = pg;
}
}
}
#endregion
#region -----------------page navigation management-----------------
public bool GotoPage( IBookItem page )
{
foreach (IBookItem pg in Pages)
{
if (pg == page)
{
_CurrentPage = pg;
return true;
}
}
return false;
}
public bool GotoNextPage()
{
int next = Pages.IndexOf(_CurrentPage);
if (next >= Pages.Count-1)
return false;
else
{
next = next + 1;
_CurrentPage = Pages[next];
return true;
}
}
public bool GotoPreviousPage()
{
int next = Pages.IndexOf(_CurrentPage);
if (next == 0)
return false;
else
{
next = next - 1;
_CurrentPage = Pages[next];
return true;
}
}
#endregion
#region -----------------cache management-----------------
internal IBookItem GetNextPage(IBookItem fromPage )
{
int next = Pages.IndexOf(fromPage);
if (next >= Pages.Count-1)
return null;
else
{
next = next + 1;
return Pages[next];
}
}
virtual public void ManageCache()
{
Cache.ManageCache();
}
#endregion
#region -----------------INotifyPropertyChanged-----------------
private void RaisePropetyChanged(string propertyName)
{
if (PropertyChanged != null)
{
PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
}
}
public event PropertyChangedEventHandler PropertyChanged;
#endregion
}
}
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