public override void Set(string key, object value,
CacheItemPolicy policy, string regionName = null)
{
if (key == null)
{
throw new ArgumentNullException("key");
}
if (value == null)
{
throw new ArgumentNullException("value");
}
if (policy == null)
{
policy = DefaultPolicy;
}
var now = GetCurrentDate(0);
var entry = new CacheEntry(policy, now)
{
Value = value
};
var cacheKey = new CacheKey(key)
{
TimeStamp = now
};
lock (_locker)
{
var e = MruManager.GetItem(cacheKey);
if (e == null)
{
MruManager.Add(cacheKey, entry);
return;
}
entry = e.Value as CacheEntry;
entry.Value = value;
// if priotiry is not removable, just update the store w/ value
if (entry.NonExpiring)
{
return;
}
if (!entry.IsExpired(now))
{
// slide the expire time...
if (entry.SlidingExpiration > 0)
{
entry.ExpirationTime = GetCurrentDate(entry.SlidingExpiration);
}
return;
}
// adjust policy (set to slide every 5 mins) of the expired item to accomodate this update...
if (entry.SlidingExpiration == 0)
{
entry.SlidingExpiration = TimeSpan.TicksPerMinute * 5;
}
entry.ExpirationTime = GetCurrentDate(entry.SlidingExpiration);
}
}
/// <summary>
/// Update the data stored at a given Address.
/// </summary>
/// <param name="value"></param>
public virtual void Update(object value)
{
//** Update the Current Entry w/ 'value'
CurrentItem.Data = value;
//** CurrentItem.DataAddress should be the same as DiskBuffer.DataAddress.
WriteToDisk(CurrentItem, false);
MruManager.Add(CurrentItem.DiskBuffer.DataAddress, CurrentItem);
RegisterChange(true);
//IsDirty = true;
}
/// <summary>
/// DocManager reports about successful/unsuccessful Open File operation
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void docManager_OpenEvent(object sender, OpenFileEventArgs e)
{
// Update MRU List
if (e.Succeeded)
{
mruManager.Add(e.FileName);
}
else
{
mruManager.Remove(e.FileName);
}
}
/// <summary>
/// Open file
/// </summary>
void FileOpenCommand(object sender, ExecutedRoutedEventArgs args)
{
if (!PromptToSave())
{
return;
}
// Show Open File dialog
OpenFileDialog dlg = new OpenFileDialog();
dlg.Filter = "XML files (*.xml)|*.xml|All Files|*.*";
dlg.DefaultExt = "xml";
dlg.InitialDirectory = SettingsManager.ApplicationSettings.InitialDirectory;
dlg.RestoreDirectory = true;
if (dlg.ShowDialog().GetValueOrDefault() != true)
{
return;
}
try
{
// Load file
drawingCanvas.Load(dlg.FileName);
}
catch (DrawingCanvasException e)
{
ShowError(e.Message);
mruManager.Delete(dlg.FileName);
return;
}
this.fileName = dlg.FileName;
UpdateTitle();
mruManager.Add(this.fileName);
// Remember initial directory
SettingsManager.ApplicationSettings.InitialDirectory = System.IO.Path.GetDirectoryName(dlg.FileName);
}
/// <summary>
/// Add 'Value' to the Collection
/// </summary>
public long Add(object value)
{
var o = new LinkedItemOnDisk(this.DataBlockSize)
{
Data = value
};
WriteToDisk(o, false);
UpdateCount(UpdateCountType.Increment);
//*** update Current, Last & First
if (LastItem.DiskBuffer.DataAddress != -1)
{
o.PreviousItemAddress = LastItem.DiskBuffer.DataAddress;
WriteToDisk(o, false);
LinkedItemOnDisk biod = CurrentItem;
biod.NextItemAddress = o.DiskBuffer.DataAddress;
Sop.DataBlock db = DataBlockDriver.ReadBlockFromDisk(this, LastItem.DiskBuffer.DataAddress, true);
if (CurrentItem.DiskBuffer.DataAddress != LastItem.DiskBuffer.DataAddress)
{
biod = (LinkedItemOnDisk)ReadFromBlock(db);
biod.NextItemAddress = o.DiskBuffer.DataAddress;
}
else
{
PurifyMeta(biod, db);
if (db.SizeOccupied > 0)
{
biod.DiskBuffer = db;
}
}
WriteToDisk(biod, false);
}
else
{
FirstItem.DiskBuffer.DataAddress = o.DiskBuffer.DataAddress;
}
currentEntry = null;
CurrentItem = o;
CurrentEntryDataAddress = o.DiskBuffer.DataAddress;
currentDataBlock = o.DiskBuffer;
LastItem.DiskBuffer.DataAddress = o.DiskBuffer.DataAddress;
MruManager.Add(CurrentEntryDataAddress, o);
//** update the header
RegisterChange(true);
//IsDirty = true;
return(o.DiskBuffer.DataAddress);
}
/// <summary>
/// Initialize helper objects from the DocToolkit Library.
///
/// Called from Form1_Load. Initialized all objects except
/// PersistWindowState wich must be initialized in the
/// form constructor.
/// </summary>
private void InitializeHelperObjects()
{
// DocManager
DocManagerData data = new DocManagerData();
data.FormOwner = this;
data.UpdateTitle = true;
data.FileDialogFilter = "DrawTools files (*.dtl)|*.dtl|All Files (*.*)|*.*";
data.NewDocName = "Untitled.dtl";
data.RegistryPath = registryPath;
docManager = new DocManager(data);
docManager.RegisterFileType("dtl", "dtlfile", "DrawTools File");
// Subscribe to DocManager events.
docManager.SaveEvent += docManager_SaveEvent;
docManager.LoadEvent += docManager_LoadEvent;
// Make "inline subscription" using anonymous methods.
docManager.OpenEvent += delegate(object sender, OpenFileEventArgs e)
{
// Update MRU List
if (e.Succeeded)
{
mruManager.Add(e.FileName);
}
else
{
mruManager.Remove(e.FileName);
}
};
docManager.DocChangedEvent += delegate(object o, EventArgs e)
{
drawArea.Refresh();
drawArea.ClearHistory();
};
docManager.ClearEvent += delegate(object o, EventArgs e)
{
if (drawArea.GraphicsList != null)
{
drawArea.GraphicsList.Clear();
drawArea.ClearHistory();
drawArea.Refresh();
}
};
docManager.NewDocument();
// DragDropManager
dragDropManager = new DragDropManager(this);
dragDropManager.FileDroppedEvent += delegate(object sender, FileDroppedEventArgs e)
{
OpenDocument(e.FileArray.GetValue(0).ToString());
};
// MruManager
mruManager = new MruManager();
mruManager.Initialize(
this, // owner form
recentFilesToolStripMenuItem, // Recent Files menu item
fileToolStripMenuItem, // parent
registryPath); // Registry path to keep MRU list
mruManager.MruOpenEvent += delegate(object sender, MruFileOpenEventArgs e)
{
OpenDocument(e.FileName);
};
}
System.IO.FileStream IFileStream.Open()
{
MruManager.Add(Id, this);
return(SystemAdaptor.Instance.SystemInterface.UnbufferedOpen(_path, _mode, _access, _share,
_sequential, _async, _blockSize));
}
private System.IO.FileStream Open()
{
MruManager.Add(Id, this);
return(Win32.UnbufferedOpen(_path, _mode, _access, _share,
_sequential, _async, _blockSize));
}