private static void RestoreMemento(IViewContent viewContent, VelerSoftware.SZC.Debugger.Core.Properties memento)
{
if (memento != null)
{
((IMementoCapable)viewContent).SetMemento(memento);
}
}
public void SwitchedToView(IViewContent newView)
{
if (newView == null)
{
throw new ArgumentNullException("newView");
}
if (currentView == newView)
{
return;
}
if (currentView != null)
{
if (newView.SupportsSwitchToThisWithoutSaveLoad(this, currentView) ||
currentView.SupportsSwitchFromThisWithoutSaveLoad(this, newView))
{
// switch without Save/Load
currentView.SwitchFromThisWithoutSaveLoad(this, newView);
newView.SwitchToThisWithoutSaveLoad(this, currentView);
currentView = newView;
return;
}
}
if (currentView != null)
{
SaveCurrentView();
}
try
{
inLoadOperation = true;
VelerSoftware.SZC.Debugger.Core.Properties memento = GetMemento(newView);
using (Stream sourceStream = OpenRead())
{
IViewContent oldView = currentView;
try
{
currentView = newView;
// don't reset fileData if the file is untitled, because OpenRead() wouldn't be able to read it otherwise
if (this.IsUntitled == false)
{
fileData = null;
}
newView.Load(this, sourceStream);
}
catch
{
// stay with old view in case of exceptions
currentView = oldView;
throw;
}
}
RestoreMemento(newView, memento);
}
finally
{
inLoadOperation = false;
}
}
private void ReloadFromDiskInternal()
{
fileData = null;
if (currentView != null)
{
try
{
inLoadOperation = true;
VelerSoftware.SZC.Debugger.Core.Properties memento = GetMemento(currentView);
using (Stream sourceStream = OpenRead())
{
currentView.Load(this, sourceStream);
}
IsDirty = false;
RestoreMemento(currentView, memento);
}
finally
{
inLoadOperation = false;
}
}
}