public WindowViewModel()
{
state = State.AudioSelecting;
ViewHome = false;
ViewBack = false;
algorithmPage = null;
navigationLine = NavigationCodes.Start;
startPage = new Pages.MainPage();
CurrentPage = startPage;
((ISupportParameter)CurrentPage.DataContext).Parameter = (Action <InterViewModelPackage>)Navigate;
}
public CodingViewModel(NavigationCodes code, IHidingMethod hidingMethod, DigitalAudio audio)
{
Message = "";
cover = audio;
method = hidingMethod;
conteinerCapacity = hidingMethod.GetAvailableSpace(audio);
action = code;
switch (code)
{
case NavigationCodes.Extract:
CodingAction = "Extract";
break;
case NavigationCodes.Embed:
CodingAction = "Embed";
break;
default:
CodingAction = "Undefined";
break;
}
}
public MethodViewModel(NavigationCodes navigationCodes)
{
SelectedMethod = null;
HidingMethods = new List <IHidingMethod>(4);
HidingMethods.Add(new LSBMethod());
HidingMethods.Add(new PhaseCoding());
HidingMethods.Add(new SpreadSpectrum());
HidingMethods.Add(new ParityCoding());
var attrType = typeof(HidingMethodParamAttribute);
methodsParamsDict = new Dictionary <string, MethodConstrProp[]>(HidingMethods.Count);
if (navigationCodes == NavigationCodes.Embed)
{
foreach (var method in HidingMethods)
{
var props_types = method.GetType().GetProperties();
var props = (from prop in props_types
where Attribute.IsDefined(prop, attrType)
where !((HidingMethodParamAttribute)prop.GetCustomAttribute(attrType)).NotInEmbed
select new MethodConstrProp(method, prop)).ToArray();
methodsParamsDict.Add(method.ToString(), props);
}
}
else
{
foreach (var method in HidingMethods)
{
var props_types = method.GetType().GetProperties();
var props = (from prop in props_types
where Attribute.IsDefined(prop, typeof(HidingMethodParamAttribute))
where !((HidingMethodParamAttribute)prop.GetCustomAttribute(attrType)).NotInExtract
select new MethodConstrProp(method, prop)).ToArray();
methodsParamsDict.Add(method.ToString(), props);
}
}
}
public void Navigate(InterViewModelPackage package)
{
if (package.Code == NavigationCodes.Start)
{
GoHome();
}
else
{
ViewHome = true;
switch (state)
{
case State.AudioSelecting:
state = State.AlgorithmSelecting;
Audio = package.Data as DigitalAudio;
navigationLine = package.Code;
CurrentPage = GetAlgorithmPage();
break;
case State.AlgorithmSelecting:
state = State.MessageCoding;
ViewBack = true;
hidingMethod = package.Data as IHidingMethod;
CurrentPage = new Pages.CodingPage
{
DataContext = new CodingViewModel(navigationLine, hidingMethod, Audio)
};
((ISupportParameter)CurrentPage.DataContext).Parameter = (Action <InterViewModelPackage>)Navigate;
break;
case State.MessageCoding:
break;
default:
break;
}
}
}
public InterViewModelPackage(NavigationCodes code, object data)
{
Code = code;
Data = data;
}
